PLT-4357 adding performance monitoring (#4622)

* WIP

* WIP

* Adding metrics collection

* updating vendor packages

* Adding metrics to config

* Adding admin console page for perf monitoring

* Updating glide

* switching to tylerb/graceful

365 files changed, 75954 insertions, 929 deletions

diff --git a/vendor/github.com/beorn7/perks/.gitignore b/vendor/github.com/beorn7/perks/.gitignore
new file mode 100644
index 000000000..1bd9209aa
--- /dev/null
+++ b/vendor/github.com/beorn7/perks/.gitignore
@@ -0,0 +1,2 @@
+*.test
+*.prof
diff --git a/vendor/github.com/beorn7/perks/LICENSE b/vendor/github.com/beorn7/perks/LICENSE
new file mode 100644
index 000000000..339177be6
--- /dev/null
+++ b/vendor/github.com/beorn7/perks/LICENSE
@@ -0,0 +1,20 @@
+Copyright (C) 2013 Blake Mizerany
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/vendor/github.com/beorn7/perks/README.md b/vendor/github.com/beorn7/perks/README.md
new file mode 100644
index 000000000..fc0577770
--- /dev/null
+++ b/vendor/github.com/beorn7/perks/README.md
@@ -0,0 +1,31 @@
+# Perks for Go (golang.org)
+
+Perks contains the Go package quantile that computes approximate quantiles over
+an unbounded data stream within low memory and CPU bounds.
+
+For more information and examples, see:
+http://godoc.org/github.com/bmizerany/perks
+
+A very special thank you and shout out to Graham Cormode (Rutgers University),
+Flip Korn (AT&T Labs–Research), S. Muthukrishnan (Rutgers University), and
+Divesh Srivastava (AT&T Labs–Research) for their research and publication of
+[Effective Computation of Biased Quantiles over Data Streams](http://www.cs.rutgers.edu/~muthu/bquant.pdf)
+
+Thank you, also:
+* Armon Dadgar (@armon)
+* Andrew Gerrand (@nf)
+* Brad Fitzpatrick (@bradfitz)
+* Keith Rarick (@kr)
+
+FAQ:
+
+Q: Why not move the quantile package into the project root?
+A: I want to add more packages to perks later.
+
+Copyright (C) 2013 Blake Mizerany
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/vendor/github.com/beorn7/perks/histogram/bench_test.go b/vendor/github.com/beorn7/perks/histogram/bench_test.go
new file mode 100644
index 000000000..56c7e5516
--- /dev/null
+++ b/vendor/github.com/beorn7/perks/histogram/bench_test.go
@@ -0,0 +1,26 @@
+package histogram
+
+import (
+	"math/rand"
+	"testing"
+)
+
+func BenchmarkInsert10Bins(b *testing.B) {
+	b.StopTimer()
+	h := New(10)
+	b.StartTimer()
+	for i := 0; i < b.N; i++ {
+		f := rand.ExpFloat64()
+		h.Insert(f)
+	}
+}
+
+func BenchmarkInsert100Bins(b *testing.B) {
+	b.StopTimer()
+	h := New(100)
+	b.StartTimer()
+	for i := 0; i < b.N; i++ {
+		f := rand.ExpFloat64()
+		h.Insert(f)
+	}
+}
diff --git a/vendor/github.com/beorn7/perks/histogram/histogram.go b/vendor/github.com/beorn7/perks/histogram/histogram.go
new file mode 100644
index 000000000..bef05c70c
--- /dev/null
+++ b/vendor/github.com/beorn7/perks/histogram/histogram.go
@@ -0,0 +1,108 @@
+// Package histogram provides a Go implementation of BigML's histogram package
+// for Clojure/Java. It is currently experimental.
+package histogram
+
+import (
+	"container/heap"
+	"math"
+	"sort"
+)
+
+type Bin struct {
+	Count int
+	Sum   float64
+}
+
+func (b *Bin) Update(x *Bin) {
+	b.Count += x.Count
+	b.Sum += x.Sum
+}
+
+func (b *Bin) Mean() float64 {
+	return b.Sum / float64(b.Count)
+}
+
+type Bins []*Bin
+
+func (bs Bins) Len() int           { return len(bs) }
+func (bs Bins) Less(i, j int) bool { return bs[i].Mean() < bs[j].Mean() }
+func (bs Bins) Swap(i, j int)      { bs[i], bs[j] = bs[j], bs[i] }
+
+func (bs *Bins) Push(x interface{}) {
+	*bs = append(*bs, x.(*Bin))
+}
+
+func (bs *Bins) Pop() interface{} {
+	return bs.remove(len(*bs) - 1)
+}
+
+func (bs *Bins) remove(n int) *Bin {
+	if n < 0 || len(*bs) < n {
+		return nil
+	}
+	x := (*bs)[n]
+	*bs = append((*bs)[:n], (*bs)[n+1:]...)
+	return x
+}
+
+type Histogram struct {
+	res *reservoir
+}
+
+func New(maxBins int) *Histogram {
+	return &Histogram{res: newReservoir(maxBins)}
+}
+
+func (h *Histogram) Insert(f float64) {
+	h.res.insert(&Bin{1, f})
+	h.res.compress()
+}
+
+func (h *Histogram) Bins() Bins {
+	return h.res.bins
+}
+
+type reservoir struct {
+	n       int
+	maxBins int
+	bins    Bins
+}
+
+func newReservoir(maxBins int) *reservoir {
+	return &reservoir{maxBins: maxBins}
+}
+
+func (r *reservoir) insert(bin *Bin) {
+	r.n += bin.Count
+	i := sort.Search(len(r.bins), func(i int) bool {
+		return r.bins[i].Mean() >= bin.Mean()
+	})
+	if i < 0 || i == r.bins.Len() {
+		// TODO(blake): Maybe use an .insert(i, bin) instead of
+		// performing the extra work of a heap.Push.
+		heap.Push(&r.bins, bin)
+		return
+	}
+	r.bins[i].Update(bin)
+}
+
+func (r *reservoir) compress() {
+	for r.bins.Len() > r.maxBins {
+		minGapIndex := -1
+		minGap := math.MaxFloat64
+		for i := 0; i < r.bins.Len()-1; i++ {
+			gap := gapWeight(r.bins[i], r.bins[i+1])
+			if minGap > gap {
+				minGap = gap
+				minGapIndex = i
+			}
+		}
+		prev := r.bins[minGapIndex]
+		next := r.bins.remove(minGapIndex + 1)
+		prev.Update(next)
+	}
+}
+
+func gapWeight(prev, next *Bin) float64 {
+	return next.Mean() - prev.Mean()
+}
diff --git a/vendor/github.com/beorn7/perks/histogram/histogram_test.go b/vendor/github.com/beorn7/perks/histogram/histogram_test.go
new file mode 100644
index 000000000..0575ebeee
--- /dev/null
+++ b/vendor/github.com/beorn7/perks/histogram/histogram_test.go
@@ -0,0 +1,38 @@
+package histogram
+
+import (
+	"math/rand"
+	"testing"
+)
+
+func TestHistogram(t *testing.T) {
+	const numPoints = 1e6
+	const maxBins = 3
+
+	h := New(maxBins)
+	for i := 0; i < numPoints; i++ {
+		f := rand.ExpFloat64()
+		h.Insert(f)
+	}
+
+	bins := h.Bins()
+	if g := len(bins); g > maxBins {
+		t.Fatalf("got %d bins, wanted <= %d", g, maxBins)
+	}
+
+	for _, b := range bins {
+		t.Logf("%+v", b)
+	}
+
+	if g := count(h.Bins()); g != numPoints {
+		t.Fatalf("binned %d points, wanted %d", g, numPoints)
+	}
+}
+
+func count(bins Bins) int {
+	binCounts := 0
+	for _, b := range bins {
+		binCounts += b.Count
+	}
+	return binCounts
+}
diff --git a/vendor/github.com/beorn7/perks/quantile/bench_test.go b/vendor/github.com/beorn7/perks/quantile/bench_test.go
new file mode 100644
index 000000000..0bd0e4e77
--- /dev/null
+++ b/vendor/github.com/beorn7/perks/quantile/bench_test.go
@@ -0,0 +1,63 @@
+package quantile
+
+import (
+	"testing"
+)
+
+func BenchmarkInsertTargeted(b *testing.B) {
+	b.ReportAllocs()
+
+	s := NewTargeted(Targets)
+	b.ResetTimer()
+	for i := float64(0); i < float64(b.N); i++ {
+		s.Insert(i)
+	}
+}
+
+func BenchmarkInsertTargetedSmallEpsilon(b *testing.B) {
+	s := NewTargeted(TargetsSmallEpsilon)
+	b.ResetTimer()
+	for i := float64(0); i < float64(b.N); i++ {
+		s.Insert(i)
+	}
+}
+
+func BenchmarkInsertBiased(b *testing.B) {
+	s := NewLowBiased(0.01)
+	b.ResetTimer()
+	for i := float64(0); i < float64(b.N); i++ {
+		s.Insert(i)
+	}
+}
+
+func BenchmarkInsertBiasedSmallEpsilon(b *testing.B) {
+	s := NewLowBiased(0.0001)
+	b.ResetTimer()
+	for i := float64(0); i < float64(b.N); i++ {
+		s.Insert(i)
+	}
+}
+
+func BenchmarkQuery(b *testing.B) {
+	s := NewTargeted(Targets)
+	for i := float64(0); i < 1e6; i++ {
+		s.Insert(i)
+	}
+	b.ResetTimer()
+	n := float64(b.N)
+	for i := float64(0); i < n; i++ {
+		s.Query(i / n)
+	}
+}
+
+func BenchmarkQuerySmallEpsilon(b *testing.B) {
+	s := NewTargeted(TargetsSmallEpsilon)
+	for i := float64(0); i < 1e6; i++ {
+		s.Insert(i)
+	}
+	b.ResetTimer()
+	n := float64(b.N)
+	for i := float64(0); i < n; i++ {
+		s.Query(i / n)
+	}
+}
diff --git a/vendor/github.com/beorn7/perks/quantile/example_test.go b/vendor/github.com/beorn7/perks/quantile/example_test.go
new file mode 100644
index 000000000..ab3293aaf
--- /dev/null
+++ b/vendor/github.com/beorn7/perks/quantile/example_test.go
@@ -0,0 +1,121 @@
+// +build go1.1
+
+package quantile_test
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"os"
+	"strconv"
+	"time"
+
+	"github.com/beorn7/perks/quantile"
+)
+
+func Example_simple() {
+	ch := make(chan float64)
+	go sendFloats(ch)
+
+	// Compute the 50th, 90th, and 99th percentile.
+	q := quantile.NewTargeted(map[float64]float64{
+		0.50: 0.005,
+		0.90: 0.001,
+		0.99: 0.0001,
+	})
+	for v := range ch {
+		q.Insert(v)
+	}
+
+	fmt.Println("perc50:", q.Query(0.50))
+	fmt.Println("perc90:", q.Query(0.90))
+	fmt.Println("perc99:", q.Query(0.99))
+	fmt.Println("count:", q.Count())
+	// Output:
+	// perc50: 5
+	// perc90: 16
+	// perc99: 223
+	// count: 2388
+}
+
+func Example_mergeMultipleStreams() {
+	// Scenario:
+	// We have multiple database shards. On each shard, there is a process
+	// collecting query response times from the database logs and inserting
+	// them into a Stream (created via NewTargeted(0.90)), much like the
+	// Simple example. These processes expose a network interface for us to
+	// ask them to serialize and send us the results of their
+	// Stream.Samples so we may Merge and Query them.
+	//
+	// NOTES:
+	// * These sample sets are small, allowing us to get them
+	// across the network much faster than sending the entire list of data
+	// points.
+	//
+	// * For this to work correctly, we must supply the same quantiles
+	// a priori the process collecting the samples supplied to NewTargeted,
+	// even if we do not plan to query them all here.
+	ch := make(chan quantile.Samples)
+	getDBQuerySamples(ch)
+	q := quantile.NewTargeted(map[float64]float64{0.90: 0.001})
+	for samples := range ch {
+		q.Merge(samples)
+	}
+	fmt.Println("perc90:", q.Query(0.90))
+}
+
+func Example_window() {
+	// Scenario: We want the 90th, 95th, and 99th percentiles for each
+	// minute.
+
+	ch := make(chan float64)
+	go sendStreamValues(ch)
+
+	tick := time.NewTicker(1 * time.Minute)
+	q := quantile.NewTargeted(map[float64]float64{
+		0.90: 0.001,
+		0.95: 0.0005,
+		0.99: 0.0001,
+	})
+	for {
+		select {
+		case t := <-tick.C:
+			flushToDB(t, q.Samples())
+			q.Reset()
+		case v := <-ch:
+			q.Insert(v)
+		}
+	}
+}
+
+func sendStreamValues(ch chan float64) {
+	// Use your imagination
+}
+
+func flushToDB(t time.Time, samples quantile.Samples) {
+	// Use your imagination
+}
+
+// This is a stub for the above example. In reality this would hit the remote
+// servers via http or something like it.
+func getDBQuerySamples(ch chan quantile.Samples) {}
+
+func sendFloats(ch chan<- float64) {
+	f, err := os.Open("exampledata.txt")
+	if err != nil {
+		log.Fatal(err)
+	}
+	sc := bufio.NewScanner(f)
+	for sc.Scan() {
+		b := sc.Bytes()
+		v, err := strconv.ParseFloat(string(b), 64)
+		if err != nil {
+			log.Fatal(err)
+		}
+		ch <- v
+	}
+	if sc.Err() != nil {
+		log.Fatal(sc.Err())
+	}
+	close(ch)
+}
diff --git a/vendor/github.com/beorn7/perks/quantile/exampledata.txt b/vendor/github.com/beorn7/perks/quantile/exampledata.txt
new file mode 100644
index 000000000..1602287d7
--- /dev/null
+++ b/vendor/github.com/beorn7/perks/quantile/exampledata.txt
@@ -0,0 +1,2388 @@
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diff --git a/vendor/github.com/beorn7/perks/quantile/stream.go b/vendor/github.com/beorn7/perks/quantile/stream.go
new file mode 100644
index 000000000..f4cabd669
--- /dev/null
+++ b/vendor/github.com/beorn7/perks/quantile/stream.go
@@ -0,0 +1,292 @@
+// Package quantile computes approximate quantiles over an unbounded data
+// stream within low memory and CPU bounds.
+//
+// A small amount of accuracy is traded to achieve the above properties.
+//
+// Multiple streams can be merged before calling Query to generate a single set
+// of results. This is meaningful when the streams represent the same type of
+// data. See Merge and Samples.
+//
+// For more detailed information about the algorithm used, see:
+//
+// Effective Computation of Biased Quantiles over Data Streams
+//
+// http://www.cs.rutgers.edu/~muthu/bquant.pdf
+package quantile
+
+import (
+	"math"
+	"sort"
+)
+
+// Sample holds an observed value and meta information for compression. JSON
+// tags have been added for convenience.
+type Sample struct {
+	Value float64 `json:",string"`
+	Width float64 `json:",string"`
+	Delta float64 `json:",string"`
+}
+
+// Samples represents a slice of samples. It implements sort.Interface.
+type Samples []Sample
+
+func (a Samples) Len() int           { return len(a) }
+func (a Samples) Less(i, j int) bool { return a[i].Value < a[j].Value }
+func (a Samples) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+
+type invariant func(s *stream, r float64) float64
+
+// NewLowBiased returns an initialized Stream for low-biased quantiles
+// (e.g. 0.01, 0.1, 0.5) where the needed quantiles are not known a priori, but
+// error guarantees can still be given even for the lower ranks of the data
+// distribution.
+//
+// The provided epsilon is a relative error, i.e. the true quantile of a value
+// returned by a query is guaranteed to be within (1±Epsilon)*Quantile.
+//
+// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error
+// properties.
+func NewLowBiased(epsilon float64) *Stream {
+	ƒ := func(s *stream, r float64) float64 {
+		return 2 * epsilon * r
+	}
+	return newStream(ƒ)
+}
+
+// NewHighBiased returns an initialized Stream for high-biased quantiles
+// (e.g. 0.01, 0.1, 0.5) where the needed quantiles are not known a priori, but
+// error guarantees can still be given even for the higher ranks of the data
+// distribution.
+//
+// The provided epsilon is a relative error, i.e. the true quantile of a value
+// returned by a query is guaranteed to be within 1-(1±Epsilon)*(1-Quantile).
+//
+// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error
+// properties.
+func NewHighBiased(epsilon float64) *Stream {
+	ƒ := func(s *stream, r float64) float64 {
+		return 2 * epsilon * (s.n - r)
+	}
+	return newStream(ƒ)
+}
+
+// NewTargeted returns an initialized Stream concerned with a particular set of
+// quantile values that are supplied a priori. Knowing these a priori reduces
+// space and computation time. The targets map maps the desired quantiles to
+// their absolute errors, i.e. the true quantile of a value returned by a query
+// is guaranteed to be within (Quantile±Epsilon).
+//
+// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error properties.
+func NewTargeted(targets map[float64]float64) *Stream {
+	ƒ := func(s *stream, r float64) float64 {
+		var m = math.MaxFloat64
+		var f float64
+		for quantile, epsilon := range targets {
+			if quantile*s.n <= r {
+				f = (2 * epsilon * r) / quantile
+			} else {
+				f = (2 * epsilon * (s.n - r)) / (1 - quantile)
+			}
+			if f < m {
+				m = f
+			}
+		}
+		return m
+	}
+	return newStream(ƒ)
+}
+
+// Stream computes quantiles for a stream of float64s. It is not thread-safe by
+// design. Take care when using across multiple goroutines.
+type Stream struct {
+	*stream
+	b      Samples
+	sorted bool
+}
+
+func newStream(ƒ invariant) *Stream {
+	x := &stream{ƒ: ƒ}
+	return &Stream{x, make(Samples, 0, 500), true}
+}
+
+// Insert inserts v into the stream.
+func (s *Stream) Insert(v float64) {
+	s.insert(Sample{Value: v, Width: 1})
+}
+
+func (s *Stream) insert(sample Sample) {
+	s.b = append(s.b, sample)
+	s.sorted = false
+	if len(s.b) == cap(s.b) {
+		s.flush()
+	}
+}
+
+// Query returns the computed qth percentiles value. If s was created with
+// NewTargeted, and q is not in the set of quantiles provided a priori, Query
+// will return an unspecified result.
+func (s *Stream) Query(q float64) float64 {
+	if !s.flushed() {
+		// Fast path when there hasn't been enough data for a flush;
+		// this also yields better accuracy for small sets of data.
+		l := len(s.b)
+		if l == 0 {
+			return 0
+		}
+		i := int(math.Ceil(float64(l) * q))
+		if i > 0 {
+			i -= 1
+		}
+		s.maybeSort()
+		return s.b[i].Value
+	}
+	s.flush()
+	return s.stream.query(q)
+}
+
+// Merge merges samples into the underlying streams samples. This is handy when
+// merging multiple streams from separate threads, database shards, etc.
+//
+// ATTENTION: This method is broken and does not yield correct results. The
+// underlying algorithm is not capable of merging streams correctly.
+func (s *Stream) Merge(samples Samples) {
+	sort.Sort(samples)
+	s.stream.merge(samples)
+}
+
+// Reset reinitializes and clears the list reusing the samples buffer memory.
+func (s *Stream) Reset() {
+	s.stream.reset()
+	s.b = s.b[:0]
+}
+
+// Samples returns stream samples held by s.
+func (s *Stream) Samples() Samples {
+	if !s.flushed() {
+		return s.b
+	}
+	s.flush()
+	return s.stream.samples()
+}
+
+// Count returns the total number of samples observed in the stream
+// since initialization.
+func (s *Stream) Count() int {
+	return len(s.b) + s.stream.count()
+}
+
+func (s *Stream) flush() {
+	s.maybeSort()
+	s.stream.merge(s.b)
+	s.b = s.b[:0]
+}
+
+func (s *Stream) maybeSort() {
+	if !s.sorted {
+		s.sorted = true
+		sort.Sort(s.b)
+	}
+}
+
+func (s *Stream) flushed() bool {
+	return len(s.stream.l) > 0
+}
+
+type stream struct {
+	n float64
+	l []Sample
+	ƒ invariant
+}
+
+func (s *stream) reset() {
+	s.l = s.l[:0]
+	s.n = 0
+}
+
+func (s *stream) insert(v float64) {
+	s.merge(Samples{{v, 1, 0}})
+}
+
+func (s *stream) merge(samples Samples) {
+	// TODO(beorn7): This tries to merge not only individual samples, but
+	// whole summaries. The paper doesn't mention merging summaries at
+	// all. Unittests show that the merging is inaccurate. Find out how to
+	// do merges properly.
+	var r float64
+	i := 0
+	for _, sample := range samples {
+		for ; i < len(s.l); i++ {
+			c := s.l[i]
+			if c.Value > sample.Value {
+				// Insert at position i.
+				s.l = append(s.l, Sample{})
+				copy(s.l[i+1:], s.l[i:])
+				s.l[i] = Sample{
+					sample.Value,
+					sample.Width,
+					math.Max(sample.Delta, math.Floor(s.ƒ(s, r))-1),
+					// TODO(beorn7): How to calculate delta correctly?
+				}
+				i++
+				goto inserted
+			}
+			r += c.Width
+		}
+		s.l = append(s.l, Sample{sample.Value, sample.Width, 0})
+		i++
+	inserted:
+		s.n += sample.Width
+		r += sample.Width
+	}
+	s.compress()
+}
+
+func (s *stream) count() int {
+	return int(s.n)
+}
+
+func (s *stream) query(q float64) float64 {
+	t := math.Ceil(q * s.n)
+	t += math.Ceil(s.ƒ(s, t) / 2)
+	p := s.l[0]
+	var r float64
+	for _, c := range s.l[1:] {
+		r += p.Width
+		if r+c.Width+c.Delta > t {
+			return p.Value
+		}
+		p = c
+	}
+	return p.Value
+}
+
+func (s *stream) compress() {
+	if len(s.l) < 2 {
+		return
+	}
+	x := s.l[len(s.l)-1]
+	xi := len(s.l) - 1
+	r := s.n - 1 - x.Width
+
+	for i := len(s.l) - 2; i >= 0; i-- {
+		c := s.l[i]
+		if c.Width+x.Width+x.Delta <= s.ƒ(s, r) {
+			x.Width += c.Width
+			s.l[xi] = x
+			// Remove element at i.
+			copy(s.l[i:], s.l[i+1:])
+			s.l = s.l[:len(s.l)-1]
+			xi -= 1
+		} else {
+			x = c
+			xi = i
+		}
+		r -= c.Width
+	}
+}
+
+func (s *stream) samples() Samples {
+	samples := make(Samples, len(s.l))
+	copy(samples, s.l)
+	return samples
+}
diff --git a/vendor/github.com/beorn7/perks/quantile/stream_test.go b/vendor/github.com/beorn7/perks/quantile/stream_test.go
new file mode 100644
index 000000000..855195097
--- /dev/null
+++ b/vendor/github.com/beorn7/perks/quantile/stream_test.go
@@ -0,0 +1,215 @@
+package quantile
+
+import (
+	"math"
+	"math/rand"
+	"sort"
+	"testing"
+)
+
+var (
+	Targets = map[float64]float64{
+		0.01: 0.001,
+		0.10: 0.01,
+		0.50: 0.05,
+		0.90: 0.01,
+		0.99: 0.001,
+	}
+	TargetsSmallEpsilon = map[float64]float64{
+		0.01: 0.0001,
+		0.10: 0.001,
+		0.50: 0.005,
+		0.90: 0.001,
+		0.99: 0.0001,
+	}
+	LowQuantiles  = []float64{0.01, 0.1, 0.5}
+	HighQuantiles = []float64{0.99, 0.9, 0.5}
+)
+
+const RelativeEpsilon = 0.01
+
+func verifyPercsWithAbsoluteEpsilon(t *testing.T, a []float64, s *Stream) {
+	sort.Float64s(a)
+	for quantile, epsilon := range Targets {
+		n := float64(len(a))
+		k := int(quantile * n)
+		if k < 1 {
+			k = 1
+		}
+		lower := int((quantile - epsilon) * n)
+		if lower < 1 {
+			lower = 1
+		}
+		upper := int(math.Ceil((quantile + epsilon) * n))
+		if upper > len(a) {
+			upper = len(a)
+		}
+		w, min, max := a[k-1], a[lower-1], a[upper-1]
+		if g := s.Query(quantile); g < min || g > max {
+			t.Errorf("q=%f: want %v [%f,%f], got %v", quantile, w, min, max, g)
+		}
+	}
+}
+
+func verifyLowPercsWithRelativeEpsilon(t *testing.T, a []float64, s *Stream) {
+	sort.Float64s(a)
+	for _, qu := range LowQuantiles {
+		n := float64(len(a))
+		k := int(qu * n)
+
+		lowerRank := int((1 - RelativeEpsilon) * qu * n)
+		upperRank := int(math.Ceil((1 + RelativeEpsilon) * qu * n))
+		w, min, max := a[k-1], a[lowerRank-1], a[upperRank-1]
+		if g := s.Query(qu); g < min || g > max {
+			t.Errorf("q=%f: want %v [%f,%f], got %v", qu, w, min, max, g)
+		}
+	}
+}
+
+func verifyHighPercsWithRelativeEpsilon(t *testing.T, a []float64, s *Stream) {
+	sort.Float64s(a)
+	for _, qu := range HighQuantiles {
+		n := float64(len(a))
+		k := int(qu * n)
+
+		lowerRank := int((1 - (1+RelativeEpsilon)*(1-qu)) * n)
+		upperRank := int(math.Ceil((1 - (1-RelativeEpsilon)*(1-qu)) * n))
+		w, min, max := a[k-1], a[lowerRank-1], a[upperRank-1]
+		if g := s.Query(qu); g < min || g > max {
+			t.Errorf("q=%f: want %v [%f,%f], got %v", qu, w, min, max, g)
+		}
+	}
+}
+
+func populateStream(s *Stream) []float64 {
+	a := make([]float64, 0, 1e5+100)
+	for i := 0; i < cap(a); i++ {
+		v := rand.NormFloat64()
+		// Add 5% asymmetric outliers.
+		if i%20 == 0 {
+			v = v*v + 1
+		}
+		s.Insert(v)
+		a = append(a, v)
+	}
+	return a
+}
+
+func TestTargetedQuery(t *testing.T) {
+	rand.Seed(42)
+	s := NewTargeted(Targets)
+	a := populateStream(s)
+	verifyPercsWithAbsoluteEpsilon(t, a, s)
+}
+
+func TestTargetedQuerySmallSampleSize(t *testing.T) {
+	rand.Seed(42)
+	s := NewTargeted(TargetsSmallEpsilon)
+	a := []float64{1, 2, 3, 4, 5}
+	for _, v := range a {
+		s.Insert(v)
+	}
+	verifyPercsWithAbsoluteEpsilon(t, a, s)
+	// If not yet flushed, results should be precise:
+	if !s.flushed() {
+		for φ, want := range map[float64]float64{
+			0.01: 1,
+			0.10: 1,
+			0.50: 3,
+			0.90: 5,
+			0.99: 5,
+		} {
+			if got := s.Query(φ); got != want {
+				t.Errorf("want %f for φ=%f, got %f", want, φ, got)
+			}
+		}
+	}
+}
+
+func TestLowBiasedQuery(t *testing.T) {
+	rand.Seed(42)
+	s := NewLowBiased(RelativeEpsilon)
+	a := populateStream(s)
+	verifyLowPercsWithRelativeEpsilon(t, a, s)
+}
+
+func TestHighBiasedQuery(t *testing.T) {
+	rand.Seed(42)
+	s := NewHighBiased(RelativeEpsilon)
+	a := populateStream(s)
+	verifyHighPercsWithRelativeEpsilon(t, a, s)
+}
+
+// BrokenTestTargetedMerge is broken, see Merge doc comment.
+func BrokenTestTargetedMerge(t *testing.T) {
+	rand.Seed(42)
+	s1 := NewTargeted(Targets)
+	s2 := NewTargeted(Targets)
+	a := populateStream(s1)
+	a = append(a, populateStream(s2)...)
+	s1.Merge(s2.Samples())
+	verifyPercsWithAbsoluteEpsilon(t, a, s1)
+}
+
+// BrokenTestLowBiasedMerge is broken, see Merge doc comment.
+func BrokenTestLowBiasedMerge(t *testing.T) {
+	rand.Seed(42)
+	s1 := NewLowBiased(RelativeEpsilon)
+	s2 := NewLowBiased(RelativeEpsilon)
+	a := populateStream(s1)
+	a = append(a, populateStream(s2)...)
+	s1.Merge(s2.Samples())
+	verifyLowPercsWithRelativeEpsilon(t, a, s2)
+}
+
+// BrokenTestHighBiasedMerge is broken, see Merge doc comment.
+func BrokenTestHighBiasedMerge(t *testing.T) {
+	rand.Seed(42)
+	s1 := NewHighBiased(RelativeEpsilon)
+	s2 := NewHighBiased(RelativeEpsilon)
+	a := populateStream(s1)
+	a = append(a, populateStream(s2)...)
+	s1.Merge(s2.Samples())
+	verifyHighPercsWithRelativeEpsilon(t, a, s2)
+}
+
+func TestUncompressed(t *testing.T) {
+	q := NewTargeted(Targets)
+	for i := 100; i > 0; i-- {
+		q.Insert(float64(i))
+	}
+	if g := q.Count(); g != 100 {
+		t.Errorf("want count 100, got %d", g)
+	}
+	// Before compression, Query should have 100% accuracy.
+	for quantile := range Targets {
+		w := quantile * 100
+		if g := q.Query(quantile); g != w {
+			t.Errorf("want %f, got %f", w, g)
+		}
+	}
+}
+
+func TestUncompressedSamples(t *testing.T) {
+	q := NewTargeted(map[float64]float64{0.99: 0.001})
+	for i := 1; i <= 100; i++ {
+		q.Insert(float64(i))
+	}
+	if g := q.Samples().Len(); g != 100 {
+		t.Errorf("want count 100, got %d", g)
+	}
+}
+
+func TestUncompressedOne(t *testing.T) {
+	q := NewTargeted(map[float64]float64{0.99: 0.01})
+	q.Insert(3.14)
+	if g := q.Query(0.90); g != 3.14 {
+		t.Error("want PI, got", g)
+	}
+}
+
+func TestDefaults(t *testing.T) {
+	if g := NewTargeted(map[float64]float64{0.99: 0.001}).Query(0.99); g != 0 {
+		t.Errorf("want 0, got %f", g)
+	}
+}
diff --git a/vendor/github.com/beorn7/perks/topk/topk.go b/vendor/github.com/beorn7/perks/topk/topk.go
new file mode 100644
index 000000000..5ac3d9904
--- /dev/null
+++ b/vendor/github.com/beorn7/perks/topk/topk.go
@@ -0,0 +1,90 @@
+package topk
+
+import (
+	"sort"
+)
+
+// http://www.cs.ucsb.edu/research/tech_reports/reports/2005-23.pdf
+
+type Element struct {
+	Value string
+	Count int
+}
+
+type Samples []*Element
+
+func (sm Samples) Len() int {
+	return len(sm)
+}
+
+func (sm Samples) Less(i, j int) bool {
+	return sm[i].Count < sm[j].Count
+}
+
+func (sm Samples) Swap(i, j int) {
+	sm[i], sm[j] = sm[j], sm[i]
+}
+
+type Stream struct {
+	k   int
+	mon map[string]*Element
+
+	// the minimum Element
+	min *Element
+}
+
+func New(k int) *Stream {
+	s := new(Stream)
+	s.k = k
+	s.mon = make(map[string]*Element)
+	s.min = &Element{}
+
+	// Track k+1 so that less frequenet items contended for that spot,
+	// resulting in k being more accurate.
+	return s
+}
+
+func (s *Stream) Insert(x string) {
+	s.insert(&Element{x, 1})
+}
+
+func (s *Stream) Merge(sm Samples) {
+	for _, e := range sm {
+		s.insert(e)
+	}
+}
+
+func (s *Stream) insert(in *Element) {
+	e := s.mon[in.Value]
+	if e != nil {
+		e.Count++
+	} else {
+		if len(s.mon) < s.k+1 {
+			e = &Element{in.Value, in.Count}
+			s.mon[in.Value] = e
+		} else {
+			e = s.min
+			delete(s.mon, e.Value)
+			e.Value = in.Value
+			e.Count += in.Count
+			s.min = e
+		}
+	}
+	if e.Count < s.min.Count {
+		s.min = e
+	}
+}
+
+func (s *Stream) Query() Samples {
+	var sm Samples
+	for _, e := range s.mon {
+		sm = append(sm, e)
+	}
+	sort.Sort(sort.Reverse(sm))
+
+	if len(sm) < s.k {
+		return sm
+	}
+
+	return sm[:s.k]
+}
diff --git a/vendor/github.com/beorn7/perks/topk/topk_test.go b/vendor/github.com/beorn7/perks/topk/topk_test.go
new file mode 100644
index 000000000..c24f0f727
--- /dev/null
+++ b/vendor/github.com/beorn7/perks/topk/topk_test.go
@@ -0,0 +1,57 @@
+package topk
+
+import (
+	"fmt"
+	"math/rand"
+	"sort"
+	"testing"
+)
+
+func TestTopK(t *testing.T) {
+	stream := New(10)
+	ss := []*Stream{New(10), New(10), New(10)}
+	m := make(map[string]int)
+	for _, s := range ss {
+		for i := 0; i < 1e6; i++ {
+			v := fmt.Sprintf("%x", int8(rand.ExpFloat64()))
+			s.Insert(v)
+			m[v]++
+		}
+		stream.Merge(s.Query())
+	}
+
+	var sm Samples
+	for x, s := range m {
+		sm = append(sm, &Element{x, s})
+	}
+	sort.Sort(sort.Reverse(sm))
+
+	g := stream.Query()
+	if len(g) != 10 {
+		t.Fatalf("got %d, want 10", len(g))
+	}
+	for i, e := range g {
+		if sm[i].Value != e.Value {
+			t.Errorf("at %d: want %q, got %q", i, sm[i].Value, e.Value)
+		}
+	}
+}
+
+func TestQuery(t *testing.T) {
+	queryTests := []struct {
+		value string
+		expected int
+	}{
+		{"a", 1},
+		{"b", 2},
+		{"c", 2},
+	}
+
+	stream := New(2)
+	for _, tt := range queryTests {
+		stream.Insert(tt.value)
+		if n := len(stream.Query()); n != tt.expected {
+			t.Errorf("want %d, got %d", tt.expected, n)
+		}
+	}
+}
diff --git a/vendor/github.com/braintree/manners/LICENSE b/vendor/github.com/braintree/manners/LICENSE
deleted file mode 100644
index 91ef5beed..000000000
--- a/vendor/github.com/braintree/manners/LICENSE
+++ /dev/null
@@ -1,19 +0,0 @@
-Copyright (c) 2014 Braintree, a division of PayPal, Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
diff --git a/vendor/github.com/braintree/manners/README.md b/vendor/github.com/braintree/manners/README.md
deleted file mode 100644
index 78e0fc01a..000000000
--- a/vendor/github.com/braintree/manners/README.md
+++ /dev/null
@@ -1,32 +0,0 @@
-# Manners
-
-A *polite* webserver for Go.
-
-Manners allows you to shut your Go webserver down gracefully, without dropping any requests. It can act as a drop-in replacement for the standard library's http.ListenAndServe function:
-
-```go
-func main() {
-  handler := MyHTTPHandler()
-  manners.ListenAndServe(":7000", handler)
-}
-```
-
-Then, when you want to shut the server down:
-
-```go
-manners.Close()
-```
-
-(Note that this does not block until all the requests are finished. Rather, the call to manners.ListenAndServe will stop blocking when all the requests are finished.)
-
-Manners ensures that all requests are served by incrementing a WaitGroup when a request comes in and decrementing it when the request finishes.
-
-If your request handler spawns Goroutines that are not guaranteed to finish with the request, you can ensure they are also completed with the `StartRoutine` and `FinishRoutine` functions on the server.
-
-### Compatability
-
-Manners 0.3.0 and above uses standard library functionality introduced in Go 1.3.
-
-### Installation
-
-`go get github.com/braintree/manners`
diff --git a/vendor/github.com/braintree/manners/helpers_test.go b/vendor/github.com/braintree/manners/helpers_test.go
deleted file mode 100644
index ba1422cb4..000000000
--- a/vendor/github.com/braintree/manners/helpers_test.go
+++ /dev/null
@@ -1,234 +0,0 @@
-package manners
-
-import (
-	"bufio"
-	"crypto/tls"
-	"errors"
-	"io/ioutil"
-	"net"
-	"net/http"
-	"os"
-	"sync"
-	"testing"
-)
-
-func newServer() *GracefulServer {
-	return NewWithServer(new(http.Server))
-}
-
-// a simple step-controllable http client
-type client struct {
-	tls         bool
-	addr        net.Addr
-	connected   chan error
-	sendrequest chan bool
-	idle        chan error
-	idlerelease chan bool
-	closed      chan bool
-}
-
-func (c *client) Run() {
-	go func() {
-		var err error
-		conn, err := net.Dial(c.addr.Network(), c.addr.String())
-		if err != nil {
-			c.connected <- err
-			return
-		}
-		if c.tls {
-			conn = tls.Client(conn, &tls.Config{InsecureSkipVerify: true})
-		}
-		c.connected <- nil
-		for <-c.sendrequest {
-			_, err = conn.Write([]byte("GET / HTTP/1.1\nHost: localhost:8000\n\n"))
-			if err != nil {
-				c.idle <- err
-			}
-			// Read response; no content
-			scanner := bufio.NewScanner(conn)
-			for scanner.Scan() {
-				// our null handler doesn't send a body, so we know the request is
-				// done when we reach the blank line after the headers
-				if scanner.Text() == "" {
-					break
-				}
-			}
-			c.idle <- scanner.Err()
-			<-c.idlerelease
-		}
-		conn.Close()
-		ioutil.ReadAll(conn)
-		c.closed <- true
-	}()
-}
-
-func newClient(addr net.Addr, tls bool) *client {
-	return &client{
-		addr:        addr,
-		tls:         tls,
-		connected:   make(chan error),
-		sendrequest: make(chan bool),
-		idle:        make(chan error),
-		idlerelease: make(chan bool),
-		closed:      make(chan bool),
-	}
-}
-
-// a handler that returns 200 ok with no body
-var nullHandler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {})
-
-func startGenericServer(t *testing.T, server *GracefulServer, statechanged chan http.ConnState, runner func() error) (l net.Listener, errc chan error) {
-	server.Addr = "localhost:0"
-	server.Handler = nullHandler
-	if statechanged != nil {
-		// Wrap the ConnState handler with something that will notify
-		// the statechanged channel when a state change happens
-		server.ConnState = func(conn net.Conn, newState http.ConnState) {
-			statechanged <- newState
-		}
-	}
-
-	//server.up = make(chan chan bool))
-	server.up = make(chan net.Listener)
-	exitchan := make(chan error)
-
-	go func() {
-		exitchan <- runner()
-	}()
-
-	// wait for server socket to be bound
-	select {
-	case l = <-server.up:
-		// all good
-
-	case err := <-exitchan:
-		// all bad
-		t.Fatal("Server failed to start", err)
-	}
-	return l, exitchan
-}
-
-func startServer(t *testing.T, server *GracefulServer, statechanged chan http.ConnState) (
-	l net.Listener, errc chan error) {
-	return startGenericServer(t, server, statechanged, server.ListenAndServe)
-}
-
-func startTLSServer(t *testing.T, server *GracefulServer, certFile, keyFile string, statechanged chan http.ConnState) (l net.Listener, errc chan error) {
-	runner := func() error {
-		return server.ListenAndServeTLS(certFile, keyFile)
-	}
-
-	return startGenericServer(t, server, statechanged, runner)
-}
-
-type tempFile struct {
-	*os.File
-}
-
-func newTempFile(content []byte) (*tempFile, error) {
-	f, err := ioutil.TempFile("", "graceful-test")
-	if err != nil {
-		return nil, err
-	}
-
-	f.Write(content)
-	return &tempFile{f}, nil
-}
-
-func (tf *tempFile) Unlink() {
-	if tf.File != nil {
-		os.Remove(tf.Name())
-		tf.File = nil
-	}
-}
-
-type testWg struct {
-	sync.Mutex
-	count      int
-	waitCalled chan int
-}
-
-func newTestWg() *testWg {
-	return &testWg{
-		waitCalled: make(chan int, 1),
-	}
-}
-
-func (wg *testWg) Add(delta int) {
-	wg.Lock()
-	wg.count++
-	wg.Unlock()
-}
-
-func (wg *testWg) Done() {
-	wg.Lock()
-	wg.count--
-	wg.Unlock()
-}
-
-func (wg *testWg) Wait() {
-	wg.Lock()
-	wg.waitCalled <- wg.count
-	wg.Unlock()
-}
-
-type fakeConn struct {
-	net.Conn
-	closeCalled bool
-}
-
-func (c *fakeConn) Close() error {
-	c.closeCalled = true
-	return nil
-}
-
-type fakeListener struct {
-	acceptRelease chan bool
-	closeCalled   chan bool
-}
-
-func newFakeListener() *fakeListener { return &fakeListener{make(chan bool, 1), make(chan bool, 1)} }
-
-func (l *fakeListener) Addr() net.Addr {
-	addr, _ := net.ResolveTCPAddr("tcp", "127.0.0.1:8080")
-	return addr
-}
-
-func (l *fakeListener) Close() error {
-	l.closeCalled <- true
-	l.acceptRelease <- true
-	return nil
-}
-
-func (l *fakeListener) Accept() (net.Conn, error) {
-	<-l.acceptRelease
-	return nil, errors.New("connection closed")
-}
-
-// localhostCert is a PEM-encoded TLS cert with SAN IPs
-// "127.0.0.1" and "[::1]", expiring at the last second of 2049 (the end
-// of ASN.1 time).
-// generated from src/pkg/crypto/tls:
-// go run generate_cert.go  --rsa-bits 512 --host 127.0.0.1,::1,example.com --ca --start-date "Jan 1 00:00:00 1970" --duration=1000000h
-var (
-	localhostCert = []byte(`-----BEGIN CERTIFICATE-----
-MIIBdzCCASOgAwIBAgIBADALBgkqhkiG9w0BAQUwEjEQMA4GA1UEChMHQWNtZSBD
-bzAeFw03MDAxMDEwMDAwMDBaFw00OTEyMzEyMzU5NTlaMBIxEDAOBgNVBAoTB0Fj
-bWUgQ28wWjALBgkqhkiG9w0BAQEDSwAwSAJBAN55NcYKZeInyTuhcCwFMhDHCmwa
-IUSdtXdcbItRB/yfXGBhiex00IaLXQnSU+QZPRZWYqeTEbFSgihqi1PUDy8CAwEA
-AaNoMGYwDgYDVR0PAQH/BAQDAgCkMBMGA1UdJQQMMAoGCCsGAQUFBwMBMA8GA1Ud
-EwEB/wQFMAMBAf8wLgYDVR0RBCcwJYILZXhhbXBsZS5jb22HBH8AAAGHEAAAAAAA
-AAAAAAAAAAAAAAEwCwYJKoZIhvcNAQEFA0EAAoQn/ytgqpiLcZu9XKbCJsJcvkgk
-Se6AbGXgSlq+ZCEVo0qIwSgeBqmsJxUu7NCSOwVJLYNEBO2DtIxoYVk+MA==
------END CERTIFICATE-----`)
-
-	localhostKey = []byte(`-----BEGIN RSA PRIVATE KEY-----
-MIIBPAIBAAJBAN55NcYKZeInyTuhcCwFMhDHCmwaIUSdtXdcbItRB/yfXGBhiex0
-0IaLXQnSU+QZPRZWYqeTEbFSgihqi1PUDy8CAwEAAQJBAQdUx66rfh8sYsgfdcvV
-NoafYpnEcB5s4m/vSVe6SU7dCK6eYec9f9wpT353ljhDUHq3EbmE4foNzJngh35d
-AekCIQDhRQG5Li0Wj8TM4obOnnXUXf1jRv0UkzE9AHWLG5q3AwIhAPzSjpYUDjVW
-MCUXgckTpKCuGwbJk7424Nb8bLzf3kllAiA5mUBgjfr/WtFSJdWcPQ4Zt9KTMNKD
-EUO0ukpTwEIl6wIhAMbGqZK3zAAFdq8DD2jPx+UJXnh0rnOkZBzDtJ6/iN69AiEA
-1Aq8MJgTaYsDQWyU/hDq5YkDJc9e9DSCvUIzqxQWMQE=
------END RSA PRIVATE KEY-----`)
-)
diff --git a/vendor/github.com/braintree/manners/server.go b/vendor/github.com/braintree/manners/server.go
deleted file mode 100644
index d51d99b81..000000000
--- a/vendor/github.com/braintree/manners/server.go
+++ /dev/null
@@ -1,227 +0,0 @@
-/*
-Package manners provides a wrapper for a standard net/http server that
-ensures all active HTTP client have completed their current request
-before the server shuts down.
-
-It can be used a drop-in replacement for the standard http package,
-or can wrap a pre-configured Server.
-
-eg.
-
-	http.Handle("/hello", func(w http.ResponseWriter, r *http.Request) {
-	  w.Write([]byte("Hello\n"))
-	})
-
-	log.Fatal(manners.ListenAndServe(":8080", nil))
-
-or for a customized server:
-
-	s := manners.NewWithServer(&http.Server{
-		Addr:           ":8080",
-		Handler:        myHandler,
-		ReadTimeout:    10 * time.Second,
-		WriteTimeout:   10 * time.Second,
-		MaxHeaderBytes: 1 << 20,
-	})
-	log.Fatal(s.ListenAndServe())
-
-The server will shut down cleanly when the Close() method is called:
-
-	go func() {
-		sigchan := make(chan os.Signal, 1)
-		signal.Notify(sigchan, os.Interrupt, os.Kill)
-		<-sigchan
-		log.Info("Shutting down...")
-		manners.Close()
-	}()
-
-	http.Handle("/hello", myHandler)
-	log.Fatal(manners.ListenAndServe(":8080", nil))
-*/
-package manners
-
-import (
-	"crypto/tls"
-	"net"
-	"net/http"
-	"sync"
-	"sync/atomic"
-)
-
-// A GracefulServer maintains a WaitGroup that counts how many in-flight
-// requests the server is handling. When it receives a shutdown signal,
-// it stops accepting new requests but does not actually shut down until
-// all in-flight requests terminate.
-//
-// GracefulServer embeds the underlying net/http.Server making its non-override
-// methods and properties avaiable.
-//
-// It must be initialized by calling NewWithServer.
-type GracefulServer struct {
-	*http.Server
-
-	shutdown chan bool
-	wg       waitGroup
-
-	lcsmu         sync.RWMutex
-	lastConnState map[net.Conn]http.ConnState
-
-	up chan net.Listener // Only used by test code.
-}
-
-type waitGroup interface {
-	Add(int)
-	Done()
-	Wait()
-}
-
-// NewWithServer wraps an existing http.Server object and returns a
-// GracefulServer that supports all of the original Server operations.
-func NewWithServer(s *http.Server) *GracefulServer {
-	return &GracefulServer{
-		Server:        s,
-		shutdown:      make(chan bool),
-		wg:            new(sync.WaitGroup),
-		lastConnState: make(map[net.Conn]http.ConnState),
-	}
-}
-
-// Close stops the server from accepting new requets and begins shutting down.
-// It returns true if it's the first time Close is called.
-func (s *GracefulServer) Close() bool {
-	return <-s.shutdown
-}
-
-// ListenAndServe provides a graceful equivalent of net/http.Serve.ListenAndServe.
-func (s *GracefulServer) ListenAndServe() error {
-	addr := s.Addr
-	if addr == "" {
-		addr = ":http"
-	}
-	listener, err := net.Listen("tcp", addr)
-	if err != nil {
-		return err
-	}
-
-	return s.Serve(listener)
-}
-
-// ListenAndServeTLS provides a graceful equivalent of net/http.Serve.ListenAndServeTLS.
-func (s *GracefulServer) ListenAndServeTLS(certFile, keyFile string) error {
-	// direct lift from net/http/server.go
-	addr := s.Addr
-	if addr == "" {
-		addr = ":https"
-	}
-	config := &tls.Config{}
-	if s.TLSConfig != nil {
-		*config = *s.TLSConfig
-	}
-	if config.NextProtos == nil {
-		config.NextProtos = []string{"http/1.1"}
-	}
-
-	var err error
-	config.Certificates = make([]tls.Certificate, 1)
-	config.Certificates[0], err = tls.LoadX509KeyPair(certFile, keyFile)
-	if err != nil {
-		return err
-	}
-
-	ln, err := net.Listen("tcp", addr)
-	if err != nil {
-		return err
-	}
-
-	return s.Serve(tls.NewListener(ln, config))
-}
-
-// Serve provides a graceful equivalent net/http.Server.Serve.
-func (s *GracefulServer) Serve(listener net.Listener) error {
-	var closing int32
-
-	go func() {
-		s.shutdown <- true
-		close(s.shutdown)
-		atomic.StoreInt32(&closing, 1)
-		s.Server.SetKeepAlivesEnabled(false)
-		listener.Close()
-	}()
-
-	originalConnState := s.Server.ConnState
-	s.ConnState = func(conn net.Conn, newState http.ConnState) {
-		s.lcsmu.RLock()
-		lastConnState := s.lastConnState[conn]
-		s.lcsmu.RUnlock()
-
-		switch newState {
-		case http.StateNew:
-			// New connection -> StateNew
-			s.StartRoutine()
-
-		case http.StateActive:
-			// (StateNew, StateIdle) -> StateActive
-			if lastConnState == http.StateIdle {
-				// The connection transitioned from idle back to active
-				s.StartRoutine()
-			}
-
-		case http.StateIdle:
-			// StateActive -> StateIdle
-			// Immediately close newly idle connections; if not they may make
-			// one more request before SetKeepAliveEnabled(false) takes effect.
-			if atomic.LoadInt32(&closing) == 1 {
-				conn.Close()
-			}
-			s.FinishRoutine()
-
-		case http.StateClosed, http.StateHijacked:
-			// (StateNew, StateActive, StateIdle) -> (StateClosed, StateHiJacked)
-			// If the connection was idle we do not need to decrement the counter.
-			if lastConnState != http.StateIdle {
-				s.FinishRoutine()
-			}
-		}
-
-		s.lcsmu.Lock()
-		if newState == http.StateClosed || newState == http.StateHijacked {
-			delete(s.lastConnState, conn)
-		} else {
-			s.lastConnState[conn] = newState
-		}
-		s.lcsmu.Unlock()
-
-		if originalConnState != nil {
-			originalConnState(conn, newState)
-		}
-	}
-
-	// A hook to allow the server to notify others when it is ready to receive
-	// requests; only used by tests.
-	if s.up != nil {
-		s.up <- listener
-	}
-	err := s.Server.Serve(listener)
-
-	// This block is reached when the server has received a shut down command
-	// or a real error happened.
-	if err == nil || atomic.LoadInt32(&closing) == 1 {
-		s.wg.Wait()
-		return nil
-	}
-
-	return err
-}
-
-// StartRoutine increments the server's WaitGroup. Use this if a web request
-// starts more goroutines and these goroutines are not guaranteed to finish
-// before the request.
-func (s *GracefulServer) StartRoutine() {
-	s.wg.Add(1)
-}
-
-// FinishRoutine decrements the server's WaitGroup. Use this to complement
-// StartRoutine().
-func (s *GracefulServer) FinishRoutine() {
-	s.wg.Done()
-}
diff --git a/vendor/github.com/braintree/manners/server_test.go b/vendor/github.com/braintree/manners/server_test.go
deleted file mode 100644
index 108863040..000000000
--- a/vendor/github.com/braintree/manners/server_test.go
+++ /dev/null
@@ -1,242 +0,0 @@
-package manners
-
-import (
-	"net"
-	"net/http"
-	"testing"
-	"time"
-)
-
-// Tests that the server allows in-flight requests to complete
-// before shutting down.
-func TestGracefulness(t *testing.T) {
-	server := newServer()
-	wg := newTestWg()
-	server.wg = wg
-	statechanged := make(chan http.ConnState)
-	listener, exitchan := startServer(t, server, statechanged)
-
-	client := newClient(listener.Addr(), false)
-	client.Run()
-
-	// wait for client to connect, but don't let it send the request yet
-	if err := <-client.connected; err != nil {
-		t.Fatal("Client failed to connect to server", err)
-	}
-	// avoid a race between the client connection and the server accept
-	if state := <-statechanged; state != http.StateNew {
-		t.Fatal("Unexpected state", state)
-	}
-
-	server.Close()
-
-	waiting := <-wg.waitCalled
-	if waiting < 1 {
-		t.Errorf("Expected the waitgroup to equal 1 at shutdown; actually %d", waiting)
-	}
-
-	// allow the client to finish sending the request and make sure the server exits after
-	// (client will be in connected but idle state at that point)
-	client.sendrequest <- true
-	close(client.sendrequest)
-	if err := <-exitchan; err != nil {
-		t.Error("Unexpected error during shutdown", err)
-	}
-}
-
-// Tests that the server begins to shut down when told to and does not accept
-// new requests once shutdown has begun
-func TestShutdown(t *testing.T) {
-	server := newServer()
-	wg := newTestWg()
-	server.wg = wg
-	statechanged := make(chan http.ConnState)
-	listener, exitchan := startServer(t, server, statechanged)
-
-	client1 := newClient(listener.Addr(), false)
-	client1.Run()
-
-	// wait for client1 to connect
-	if err := <-client1.connected; err != nil {
-		t.Fatal("Client failed to connect to server", err)
-	}
-	// avoid a race between the client connection and the server accept
-	if state := <-statechanged; state != http.StateNew {
-		t.Fatal("Unexpected state", state)
-	}
-
-	// start the shutdown; once it hits waitgroup.Wait()
-	// the listener should of been closed, though client1 is still connected
-	if server.Close() != true {
-		t.Fatal("first call to Close returned false")
-	}
-	if server.Close() != false {
-		t.Fatal("second call to Close returned true")
-	}
-
-	waiting := <-wg.waitCalled
-	if waiting != 1 {
-		t.Errorf("Waitcount should be one, got %d", waiting)
-	}
-
-	// should get connection refused at this point
-	client2 := newClient(listener.Addr(), false)
-	client2.Run()
-
-	if err := <-client2.connected; err == nil {
-		t.Fatal("client2 connected when it should of received connection refused")
-	}
-
-	// let client1 finish so the server can exit
-	close(client1.sendrequest) // don't bother sending an actual request
-
-	<-exitchan
-}
-
-// Test that a connection is closed upon reaching an idle state if and only if the server
-// is shutting down.
-func TestCloseOnIdle(t *testing.T) {
-	server := newServer()
-	wg := newTestWg()
-	server.wg = wg
-	fl := newFakeListener()
-	runner := func() error {
-		return server.Serve(fl)
-	}
-
-	startGenericServer(t, server, nil, runner)
-
-	// Change to idle state while server is not closing; Close should not be called
-	conn := &fakeConn{}
-	server.ConnState(conn, http.StateIdle)
-	if conn.closeCalled {
-		t.Error("Close was called unexpected")
-	}
-
-	server.Close()
-
-	// wait until the server calls Close() on the listener
-	// by that point the atomic closing variable will have been updated, avoiding a race.
-	<-fl.closeCalled
-
-	conn = &fakeConn{}
-	server.ConnState(conn, http.StateIdle)
-	if !conn.closeCalled {
-		t.Error("Close was not called")
-	}
-}
-
-func waitForState(t *testing.T, waiter chan http.ConnState, state http.ConnState, errmsg string) {
-	for {
-		select {
-		case ns := <-waiter:
-			if ns == state {
-				return
-			}
-		case <-time.After(time.Second):
-			t.Fatal(errmsg)
-		}
-	}
-}
-
-// Test that a request moving from active->idle->active using an actual
-// network connection still results in a corect shutdown
-func TestStateTransitionActiveIdleActive(t *testing.T) {
-	server := newServer()
-	wg := newTestWg()
-	statechanged := make(chan http.ConnState)
-	server.wg = wg
-	listener, exitchan := startServer(t, server, statechanged)
-
-	client := newClient(listener.Addr(), false)
-	client.Run()
-
-	// wait for client to connect, but don't let it send the request
-	if err := <-client.connected; err != nil {
-		t.Fatal("Client failed to connect to server", err)
-	}
-
-	for i := 0; i < 2; i++ {
-		client.sendrequest <- true
-		waitForState(t, statechanged, http.StateActive, "Client failed to reach active state")
-		<-client.idle
-		client.idlerelease <- true
-		waitForState(t, statechanged, http.StateIdle, "Client failed to reach idle state")
-	}
-
-	// client is now in an idle state
-
-	server.Close()
-	waiting := <-wg.waitCalled
-	if waiting != 0 {
-		t.Errorf("Waitcount should be zero, got %d", waiting)
-	}
-
-	if err := <-exitchan; err != nil {
-		t.Error("Unexpected error during shutdown", err)
-	}
-}
-
-// Test state transitions from new->active->-idle->closed using an actual
-// network connection and make sure the waitgroup count is correct at the end.
-func TestStateTransitionActiveIdleClosed(t *testing.T) {
-	var (
-		listener net.Listener
-		exitchan chan error
-	)
-
-	keyFile, err1 := newTempFile(localhostKey)
-	certFile, err2 := newTempFile(localhostCert)
-	defer keyFile.Unlink()
-	defer certFile.Unlink()
-
-	if err1 != nil || err2 != nil {
-		t.Fatal("Failed to create temporary files", err1, err2)
-	}
-
-	for _, withTLS := range []bool{false, true} {
-		server := newServer()
-		wg := newTestWg()
-		statechanged := make(chan http.ConnState)
-		server.wg = wg
-		if withTLS {
-			listener, exitchan = startTLSServer(t, server, certFile.Name(), keyFile.Name(), statechanged)
-		} else {
-			listener, exitchan = startServer(t, server, statechanged)
-		}
-
-		client := newClient(listener.Addr(), withTLS)
-		client.Run()
-
-		// wait for client to connect, but don't let it send the request
-		if err := <-client.connected; err != nil {
-			t.Fatal("Client failed to connect to server", err)
-		}
-
-		client.sendrequest <- true
-		waitForState(t, statechanged, http.StateActive, "Client failed to reach active state")
-
-		err := <-client.idle
-		if err != nil {
-			t.Fatalf("tls=%t unexpected error from client %s", withTLS, err)
-		}
-
-		client.idlerelease <- true
-		waitForState(t, statechanged, http.StateIdle, "Client failed to reach idle state")
-
-		// client is now in an idle state
-		close(client.sendrequest)
-		<-client.closed
-		waitForState(t, statechanged, http.StateClosed, "Client failed to reach closed state")
-
-		server.Close()
-		waiting := <-wg.waitCalled
-		if waiting != 0 {
-			t.Errorf("Waitcount should be zero, got %d", waiting)
-		}
-
-		if err := <-exitchan; err != nil {
-			t.Error("Unexpected error during shutdown", err)
-		}
-	}
-}
diff --git a/vendor/github.com/braintree/manners/static.go b/vendor/github.com/braintree/manners/static.go
deleted file mode 100644
index 2a74b094b..000000000
--- a/vendor/github.com/braintree/manners/static.go
+++ /dev/null
@@ -1,35 +0,0 @@
-package manners
-
-import (
-	"net"
-	"net/http"
-)
-
-var defaultServer *GracefulServer
-
-// ListenAndServe provides a graceful version of the function provided by the
-// net/http package. Call Close() to stop the server.
-func ListenAndServe(addr string, handler http.Handler) error {
-	defaultServer = NewWithServer(&http.Server{Addr: addr, Handler: handler})
-	return defaultServer.ListenAndServe()
-}
-
-// ListenAndServeTLS provides a graceful version of the function provided by the
-// net/http package. Call Close() to stop the server.
-func ListenAndServeTLS(addr string, certFile string, keyFile string, handler http.Handler) error {
-	defaultServer = NewWithServer(&http.Server{Addr: addr, Handler: handler})
-	return defaultServer.ListenAndServeTLS(certFile, keyFile)
-}
-
-// Serve provides a graceful version of the function provided by the net/http
-// package. Call Close() to stop the server.
-func Serve(l net.Listener, handler http.Handler) error {
-	defaultServer = NewWithServer(&http.Server{Handler: handler})
-	return defaultServer.Serve(l)
-}
-
-// Shuts down the default server used by ListenAndServe, ListenAndServeTLS and
-// Serve. It returns true if it's the first time Close is called.
-func Close() bool {
-	return defaultServer.Close()
-}
diff --git a/vendor/github.com/braintree/manners/transition_test.go b/vendor/github.com/braintree/manners/transition_test.go
deleted file mode 100644
index ffa06d3eb..000000000
--- a/vendor/github.com/braintree/manners/transition_test.go
+++ /dev/null
@@ -1,53 +0,0 @@
-package manners
-
-import (
-	"net/http"
-	"strings"
-	"testing"
-)
-
-func TestStateTransitions(t *testing.T) {
-	tests := []transitionTest{
-		transitionTest{[]http.ConnState{http.StateNew, http.StateActive}, 1},
-		transitionTest{[]http.ConnState{http.StateNew, http.StateClosed}, 0},
-		transitionTest{[]http.ConnState{http.StateNew, http.StateActive, http.StateClosed}, 0},
-		transitionTest{[]http.ConnState{http.StateNew, http.StateActive, http.StateHijacked}, 0},
-		transitionTest{[]http.ConnState{http.StateNew, http.StateActive, http.StateIdle}, 0},
-		transitionTest{[]http.ConnState{http.StateNew, http.StateActive, http.StateIdle, http.StateActive}, 1},
-		transitionTest{[]http.ConnState{http.StateNew, http.StateActive, http.StateIdle, http.StateActive, http.StateIdle}, 0},
-		transitionTest{[]http.ConnState{http.StateNew, http.StateActive, http.StateIdle, http.StateActive, http.StateClosed}, 0},
-		transitionTest{[]http.ConnState{http.StateNew, http.StateActive, http.StateIdle, http.StateActive, http.StateIdle, http.StateClosed}, 0},
-	}
-
-	for _, test := range tests {
-		testStateTransition(t, test)
-	}
-}
-
-type transitionTest struct {
-	states          []http.ConnState
-	expectedWgCount int
-}
-
-func testStateTransition(t *testing.T, test transitionTest) {
-	server := newServer()
-	wg := newTestWg()
-	server.wg = wg
-	startServer(t, server, nil)
-
-	conn := &fakeConn{}
-	for _, newState := range test.states {
-		server.ConnState(conn, newState)
-	}
-
-	server.Close()
-	waiting := <-wg.waitCalled
-	if waiting != test.expectedWgCount {
-		names := make([]string, len(test.states))
-		for i, s := range test.states {
-			names[i] = s.String()
-		}
-		transitions := strings.Join(names, " -> ")
-		t.Errorf("%s - Waitcount should be %d, got %d", transitions, test.expectedWgCount, waiting)
-	}
-}
diff --git a/vendor/github.com/golang/protobuf/.gitignore b/vendor/github.com/golang/protobuf/.gitignore
new file mode 100644
index 000000000..8f5b596b1
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/.gitignore
@@ -0,0 +1,16 @@
+.DS_Store
+*.[568ao]
+*.ao
+*.so
+*.pyc
+._*
+.nfs.*
+[568a].out
+*~
+*.orig
+core
+_obj
+_test
+_testmain.go
+protoc-gen-go/testdata/multi/*.pb.go
+_conformance/_conformance
diff --git a/vendor/github.com/golang/protobuf/AUTHORS b/vendor/github.com/golang/protobuf/AUTHORS
new file mode 100644
index 000000000..15167cd74
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/AUTHORS
@@ -0,0 +1,3 @@
+# This source code refers to The Go Authors for copyright purposes.
+# The master list of authors is in the main Go distribution,
+# visible at http://tip.golang.org/AUTHORS.
diff --git a/vendor/github.com/golang/protobuf/CONTRIBUTORS b/vendor/github.com/golang/protobuf/CONTRIBUTORS
new file mode 100644
index 000000000..1c4577e96
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/CONTRIBUTORS
@@ -0,0 +1,3 @@
+# This source code was written by the Go contributors.
+# The master list of contributors is in the main Go distribution,
+# visible at http://tip.golang.org/CONTRIBUTORS.
diff --git a/vendor/github.com/golang/protobuf/LICENSE b/vendor/github.com/golang/protobuf/LICENSE
new file mode 100644
index 000000000..1b1b1921e
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/LICENSE
@@ -0,0 +1,31 @@
+Go support for Protocol Buffers - Google's data interchange format
+
+Copyright 2010 The Go Authors.  All rights reserved.
+https://github.com/golang/protobuf
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+    * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
diff --git a/vendor/github.com/golang/protobuf/Make.protobuf b/vendor/github.com/golang/protobuf/Make.protobuf
new file mode 100644
index 000000000..15071de10
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/Make.protobuf
@@ -0,0 +1,40 @@
+# Go support for Protocol Buffers - Google's data interchange format
+#
+# Copyright 2010 The Go Authors.  All rights reserved.
+# https://github.com/golang/protobuf
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Includable Makefile to add a rule for generating .pb.go files from .proto files
+# (Google protocol buffer descriptions).
+# Typical use if myproto.proto is a file in package mypackage in this directory:
+#
+#	include $(GOROOT)/src/pkg/github.com/golang/protobuf/Make.protobuf
+
+%.pb.go:	%.proto
+	protoc --go_out=. $<
+
diff --git a/vendor/github.com/golang/protobuf/Makefile b/vendor/github.com/golang/protobuf/Makefile
new file mode 100644
index 000000000..a1421d8b7
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/Makefile
@@ -0,0 +1,55 @@
+# Go support for Protocol Buffers - Google's data interchange format
+#
+# Copyright 2010 The Go Authors.  All rights reserved.
+# https://github.com/golang/protobuf
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+all:	install
+
+install:
+	go install ./proto ./jsonpb ./ptypes
+	go install ./protoc-gen-go
+
+test:
+	go test ./proto ./jsonpb ./ptypes
+	make -C protoc-gen-go/testdata test
+
+clean:
+	go clean ./...
+
+nuke:
+	go clean -i ./...
+
+regenerate:
+	make -C protoc-gen-go/descriptor regenerate
+	make -C protoc-gen-go/plugin regenerate
+	make -C protoc-gen-go/testdata regenerate
+	make -C proto/testdata regenerate
+	make -C jsonpb/jsonpb_test_proto regenerate
+	make -C _conformance regenerate
diff --git a/vendor/github.com/golang/protobuf/README.md b/vendor/github.com/golang/protobuf/README.md
new file mode 100644
index 000000000..037fc7c8e
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/README.md
@@ -0,0 +1,241 @@
+# Go support for Protocol Buffers
+
+Google's data interchange format.
+Copyright 2010 The Go Authors.
+https://github.com/golang/protobuf
+
+This package and the code it generates requires at least Go 1.4.
+
+This software implements Go bindings for protocol buffers.  For
+information about protocol buffers themselves, see
+	https://developers.google.com/protocol-buffers/
+
+## Installation ##
+
+To use this software, you must:
+- Install the standard C++ implementation of protocol buffers from
+	https://developers.google.com/protocol-buffers/
+- Of course, install the Go compiler and tools from
+	https://golang.org/
+  See
+	https://golang.org/doc/install
+  for details or, if you are using gccgo, follow the instructions at
+	https://golang.org/doc/install/gccgo
+- Grab the code from the repository and install the proto package.
+  The simplest way is to run `go get -u github.com/golang/protobuf/{proto,protoc-gen-go}`.
+  The compiler plugin, protoc-gen-go, will be installed in $GOBIN,
+  defaulting to $GOPATH/bin.  It must be in your $PATH for the protocol
+  compiler, protoc, to find it.
+
+This software has two parts: a 'protocol compiler plugin' that
+generates Go source files that, once compiled, can access and manage
+protocol buffers; and a library that implements run-time support for
+encoding (marshaling), decoding (unmarshaling), and accessing protocol
+buffers.
+
+There is support for gRPC in Go using protocol buffers.
+See the note at the bottom of this file for details.
+
+There are no insertion points in the plugin.
+
+
+## Using protocol buffers with Go ##
+
+Once the software is installed, there are two steps to using it.
+First you must compile the protocol buffer definitions and then import
+them, with the support library, into your program.
+
+To compile the protocol buffer definition, run protoc with the --go_out
+parameter set to the directory you want to output the Go code to.
+
+	protoc --go_out=. *.proto
+
+The generated files will be suffixed .pb.go.  See the Test code below
+for an example using such a file.
+
+
+The package comment for the proto library contains text describing
+the interface provided in Go for protocol buffers. Here is an edited
+version.
+
+==========
+
+The proto package converts data structures to and from the
+wire format of protocol buffers.  It works in concert with the
+Go source code generated for .proto files by the protocol compiler.
+
+A summary of the properties of the protocol buffer interface
+for a protocol buffer variable v:
+
+  - Names are turned from camel_case to CamelCase for export.
+  - There are no methods on v to set fields; just treat
+  	them as structure fields.
+  - There are getters that return a field's value if set,
+	and return the field's default value if unset.
+	The getters work even if the receiver is a nil message.
+  - The zero value for a struct is its correct initialization state.
+	All desired fields must be set before marshaling.
+  - A Reset() method will restore a protobuf struct to its zero state.
+  - Non-repeated fields are pointers to the values; nil means unset.
+	That is, optional or required field int32 f becomes F *int32.
+  - Repeated fields are slices.
+  - Helper functions are available to aid the setting of fields.
+	Helpers for getting values are superseded by the
+	GetFoo methods and their use is deprecated.
+		msg.Foo = proto.String("hello") // set field
+  - Constants are defined to hold the default values of all fields that
+	have them.  They have the form Default_StructName_FieldName.
+	Because the getter methods handle defaulted values,
+	direct use of these constants should be rare.
+  - Enums are given type names and maps from names to values.
+	Enum values are prefixed with the enum's type name. Enum types have
+	a String method, and a Enum method to assist in message construction.
+  - Nested groups and enums have type names prefixed with the name of
+  	the surrounding message type.
+  - Extensions are given descriptor names that start with E_,
+	followed by an underscore-delimited list of the nested messages
+	that contain it (if any) followed by the CamelCased name of the
+	extension field itself.  HasExtension, ClearExtension, GetExtension
+	and SetExtension are functions for manipulating extensions.
+  - Oneof field sets are given a single field in their message,
+	with distinguished wrapper types for each possible field value.
+  - Marshal and Unmarshal are functions to encode and decode the wire format.
+
+When the .proto file specifies `syntax="proto3"`, there are some differences:
+
+  - Non-repeated fields of non-message type are values instead of pointers.
+  - Getters are only generated for message and oneof fields.
+  - Enum types do not get an Enum method.
+
+Consider file test.proto, containing
+
+```proto
+	package example;
+	
+	enum FOO { X = 17; };
+	
+	message Test {
+	  required string label = 1;
+	  optional int32 type = 2 [default=77];
+	  repeated int64 reps = 3;
+	  optional group OptionalGroup = 4 {
+	    required string RequiredField = 5;
+	  }
+	}
+```
+
+To create and play with a Test object from the example package,
+
+```go
+	package main
+
+	import (
+		"log"
+
+		"github.com/golang/protobuf/proto"
+		"path/to/example"
+	)
+
+	func main() {
+		test := &example.Test {
+			Label: proto.String("hello"),
+			Type:  proto.Int32(17),
+			Reps:  []int64{1, 2, 3},
+			Optionalgroup: &example.Test_OptionalGroup {
+				RequiredField: proto.String("good bye"),
+			},
+		}
+		data, err := proto.Marshal(test)
+		if err != nil {
+			log.Fatal("marshaling error: ", err)
+		}
+		newTest := &example.Test{}
+		err = proto.Unmarshal(data, newTest)
+		if err != nil {
+			log.Fatal("unmarshaling error: ", err)
+		}
+		// Now test and newTest contain the same data.
+		if test.GetLabel() != newTest.GetLabel() {
+			log.Fatalf("data mismatch %q != %q", test.GetLabel(), newTest.GetLabel())
+		}
+		// etc.
+	}
+```
+
+## Parameters ##
+
+To pass extra parameters to the plugin, use a comma-separated
+parameter list separated from the output directory by a colon:
+
+
+	protoc --go_out=plugins=grpc,import_path=mypackage:. *.proto
+
+
+- `import_prefix=xxx` - a prefix that is added onto the beginning of
+  all imports. Useful for things like generating protos in a
+  subdirectory, or regenerating vendored protobufs in-place.
+- `import_path=foo/bar` - used as the package if no input files
+  declare `go_package`. If it contains slashes, everything up to the
+  rightmost slash is ignored.
+- `plugins=plugin1+plugin2` - specifies the list of sub-plugins to
+  load. The only plugin in this repo is `grpc`.
+- `Mfoo/bar.proto=quux/shme` - declares that foo/bar.proto is
+  associated with Go package quux/shme.  This is subject to the
+  import_prefix parameter.
+
+## gRPC Support ##
+
+If a proto file specifies RPC services, protoc-gen-go can be instructed to
+generate code compatible with gRPC (http://www.grpc.io/). To do this, pass
+the `plugins` parameter to protoc-gen-go; the usual way is to insert it into
+the --go_out argument to protoc:
+
+	protoc --go_out=plugins=grpc:. *.proto
+
+## Compatibility ##
+
+The library and the generated code are expected to be stable over time.
+However, we reserve the right to make breaking changes without notice for the
+following reasons:
+
+- Security. A security issue in the specification or implementation may come to
+  light whose resolution requires breaking compatibility. We reserve the right
+  to address such security issues.
+- Unspecified behavior.  There are some aspects of the Protocol Buffers
+  specification that are undefined.  Programs that depend on such unspecified
+  behavior may break in future releases.
+- Specification errors or changes. If it becomes necessary to address an
+  inconsistency, incompleteness, or change in the Protocol Buffers
+  specification, resolving the issue could affect the meaning or legality of
+  existing programs.  We reserve the right to address such issues, including
+  updating the implementations.
+- Bugs.  If the library has a bug that violates the specification, a program
+  that depends on the buggy behavior may break if the bug is fixed.  We reserve
+  the right to fix such bugs.
+- Adding methods or fields to generated structs.  These may conflict with field
+  names that already exist in a schema, causing applications to break.  When the
+  code generator encounters a field in the schema that would collide with a
+  generated field or method name, the code generator will append an underscore
+  to the generated field or method name.
+- Adding, removing, or changing methods or fields in generated structs that
+  start with `XXX`.  These parts of the generated code are exported out of
+  necessity, but should not be considered part of the public API.
+- Adding, removing, or changing unexported symbols in generated code.
+
+Any breaking changes outside of these will be announced 6 months in advance to
+protobuf@googlegroups.com.
+
+You should, whenever possible, use generated code created by the `protoc-gen-go`
+tool built at the same commit as the `proto` package.  The `proto` package
+declares package-level constants in the form `ProtoPackageIsVersionX`.
+Application code and generated code may depend on one of these constants to
+ensure that compilation will fail if the available version of the proto library
+is too old.  Whenever we make a change to the generated code that requires newer
+library support, in the same commit we will increment the version number of the
+generated code and declare a new package-level constant whose name incorporates
+the latest version number.  Removing a compatibility constant is considered a
+breaking change and would be subject to the announcement policy stated above.
+
+The `protoc-gen-go/generator` package exposes a plugin interface,
+which is used by the gRPC code generation. This interface is not
+supported and is subject to incompatible changes without notice.
diff --git a/vendor/github.com/golang/protobuf/_conformance/Makefile b/vendor/github.com/golang/protobuf/_conformance/Makefile
new file mode 100644
index 000000000..89800e2d9
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/_conformance/Makefile
@@ -0,0 +1,33 @@
+# Go support for Protocol Buffers - Google's data interchange format
+#
+# Copyright 2016 The Go Authors.  All rights reserved.
+# https://github.com/golang/protobuf
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+regenerate:
+	protoc --go_out=Mgoogle/protobuf/any.proto=github.com/golang/protobuf/ptypes/any,Mgoogle/protobuf/duration.proto=github.com/golang/protobuf/ptypes/duration,Mgoogle/protobuf/struct.proto=github.com/golang/protobuf/ptypes/struct,Mgoogle/protobuf/timestamp.proto=github.com/golang/protobuf/ptypes/timestamp,Mgoogle/protobuf/wrappers.proto=github.com/golang/protobuf/ptypes/wrappers,Mgoogle/protobuf/field_mask.proto=google.golang.org/genproto/protobuf:. conformance_proto/conformance.proto
diff --git a/vendor/github.com/golang/protobuf/_conformance/conformance.go b/vendor/github.com/golang/protobuf/_conformance/conformance.go
new file mode 100644
index 000000000..c54212c80
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/_conformance/conformance.go
@@ -0,0 +1,161 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2016 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// conformance implements the conformance test subprocess protocol as
+// documented in conformance.proto.
+package main
+
+import (
+	"encoding/binary"
+	"fmt"
+	"io"
+	"os"
+
+	pb "github.com/golang/protobuf/_conformance/conformance_proto"
+	"github.com/golang/protobuf/jsonpb"
+	"github.com/golang/protobuf/proto"
+)
+
+func main() {
+	var sizeBuf [4]byte
+	inbuf := make([]byte, 0, 4096)
+	outbuf := proto.NewBuffer(nil)
+	for {
+		if _, err := io.ReadFull(os.Stdin, sizeBuf[:]); err == io.EOF {
+			break
+		} else if err != nil {
+			fmt.Fprintln(os.Stderr, "go conformance: read request:", err)
+			os.Exit(1)
+		}
+		size := binary.LittleEndian.Uint32(sizeBuf[:])
+		if int(size) > cap(inbuf) {
+			inbuf = make([]byte, size)
+		}
+		inbuf = inbuf[:size]
+		if _, err := io.ReadFull(os.Stdin, inbuf); err != nil {
+			fmt.Fprintln(os.Stderr, "go conformance: read request:", err)
+			os.Exit(1)
+		}
+
+		req := new(pb.ConformanceRequest)
+		if err := proto.Unmarshal(inbuf, req); err != nil {
+			fmt.Fprintln(os.Stderr, "go conformance: parse request:", err)
+			os.Exit(1)
+		}
+		res := handle(req)
+
+		if err := outbuf.Marshal(res); err != nil {
+			fmt.Fprintln(os.Stderr, "go conformance: marshal response:", err)
+			os.Exit(1)
+		}
+		binary.LittleEndian.PutUint32(sizeBuf[:], uint32(len(outbuf.Bytes())))
+		if _, err := os.Stdout.Write(sizeBuf[:]); err != nil {
+			fmt.Fprintln(os.Stderr, "go conformance: write response:", err)
+			os.Exit(1)
+		}
+		if _, err := os.Stdout.Write(outbuf.Bytes()); err != nil {
+			fmt.Fprintln(os.Stderr, "go conformance: write response:", err)
+			os.Exit(1)
+		}
+		outbuf.Reset()
+	}
+}
+
+var jsonMarshaler = jsonpb.Marshaler{
+	OrigName: true,
+}
+
+func handle(req *pb.ConformanceRequest) *pb.ConformanceResponse {
+	var err error
+	var msg pb.TestAllTypes
+	switch p := req.Payload.(type) {
+	case *pb.ConformanceRequest_ProtobufPayload:
+		err = proto.Unmarshal(p.ProtobufPayload, &msg)
+	case *pb.ConformanceRequest_JsonPayload:
+		err = jsonpb.UnmarshalString(p.JsonPayload, &msg)
+		if err != nil && err.Error() == "unmarshaling Any not supported yet" {
+			return &pb.ConformanceResponse{
+				Result: &pb.ConformanceResponse_Skipped{
+					Skipped: err.Error(),
+				},
+			}
+		}
+	default:
+		return &pb.ConformanceResponse{
+			Result: &pb.ConformanceResponse_RuntimeError{
+				RuntimeError: "unknown request payload type",
+			},
+		}
+	}
+	if err != nil {
+		return &pb.ConformanceResponse{
+			Result: &pb.ConformanceResponse_ParseError{
+				ParseError: err.Error(),
+			},
+		}
+	}
+	switch req.RequestedOutputFormat {
+	case pb.WireFormat_PROTOBUF:
+		p, err := proto.Marshal(&msg)
+		if err != nil {
+			return &pb.ConformanceResponse{
+				Result: &pb.ConformanceResponse_SerializeError{
+					SerializeError: err.Error(),
+				},
+			}
+		}
+		return &pb.ConformanceResponse{
+			Result: &pb.ConformanceResponse_ProtobufPayload{
+				ProtobufPayload: p,
+			},
+		}
+	case pb.WireFormat_JSON:
+		p, err := jsonMarshaler.MarshalToString(&msg)
+		if err != nil {
+			return &pb.ConformanceResponse{
+				Result: &pb.ConformanceResponse_SerializeError{
+					SerializeError: err.Error(),
+				},
+			}
+		}
+		return &pb.ConformanceResponse{
+			Result: &pb.ConformanceResponse_JsonPayload{
+				JsonPayload: p,
+			},
+		}
+	default:
+		return &pb.ConformanceResponse{
+			Result: &pb.ConformanceResponse_RuntimeError{
+				RuntimeError: "unknown output format",
+			},
+		}
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/_conformance/conformance_proto/conformance.pb.go b/vendor/github.com/golang/protobuf/_conformance/conformance_proto/conformance.pb.go
new file mode 100644
index 000000000..5e01f9b9c
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/_conformance/conformance_proto/conformance.pb.go
@@ -0,0 +1,1886 @@
+// Code generated by protoc-gen-go.
+// source: conformance_proto/conformance.proto
+// DO NOT EDIT!
+
+/*
+Package conformance is a generated protocol buffer package.
+
+It is generated from these files:
+	conformance_proto/conformance.proto
+
+It has these top-level messages:
+	ConformanceRequest
+	ConformanceResponse
+	TestAllTypes
+	ForeignMessage
+*/
+package conformance
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+import google_protobuf "github.com/golang/protobuf/ptypes/any"
+import google_protobuf1 "github.com/golang/protobuf/ptypes/duration"
+import google_protobuf2 "google.golang.org/genproto/protobuf"
+import google_protobuf3 "github.com/golang/protobuf/ptypes/struct"
+import google_protobuf4 "github.com/golang/protobuf/ptypes/timestamp"
+import google_protobuf5 "github.com/golang/protobuf/ptypes/wrappers"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+type WireFormat int32
+
+const (
+	WireFormat_UNSPECIFIED WireFormat = 0
+	WireFormat_PROTOBUF    WireFormat = 1
+	WireFormat_JSON        WireFormat = 2
+)
+
+var WireFormat_name = map[int32]string{
+	0: "UNSPECIFIED",
+	1: "PROTOBUF",
+	2: "JSON",
+}
+var WireFormat_value = map[string]int32{
+	"UNSPECIFIED": 0,
+	"PROTOBUF":    1,
+	"JSON":        2,
+}
+
+func (x WireFormat) String() string {
+	return proto.EnumName(WireFormat_name, int32(x))
+}
+func (WireFormat) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+type ForeignEnum int32
+
+const (
+	ForeignEnum_FOREIGN_FOO ForeignEnum = 0
+	ForeignEnum_FOREIGN_BAR ForeignEnum = 1
+	ForeignEnum_FOREIGN_BAZ ForeignEnum = 2
+)
+
+var ForeignEnum_name = map[int32]string{
+	0: "FOREIGN_FOO",
+	1: "FOREIGN_BAR",
+	2: "FOREIGN_BAZ",
+}
+var ForeignEnum_value = map[string]int32{
+	"FOREIGN_FOO": 0,
+	"FOREIGN_BAR": 1,
+	"FOREIGN_BAZ": 2,
+}
+
+func (x ForeignEnum) String() string {
+	return proto.EnumName(ForeignEnum_name, int32(x))
+}
+func (ForeignEnum) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+type TestAllTypes_NestedEnum int32
+
+const (
+	TestAllTypes_FOO TestAllTypes_NestedEnum = 0
+	TestAllTypes_BAR TestAllTypes_NestedEnum = 1
+	TestAllTypes_BAZ TestAllTypes_NestedEnum = 2
+	TestAllTypes_NEG TestAllTypes_NestedEnum = -1
+)
+
+var TestAllTypes_NestedEnum_name = map[int32]string{
+	0:  "FOO",
+	1:  "BAR",
+	2:  "BAZ",
+	-1: "NEG",
+}
+var TestAllTypes_NestedEnum_value = map[string]int32{
+	"FOO": 0,
+	"BAR": 1,
+	"BAZ": 2,
+	"NEG": -1,
+}
+
+func (x TestAllTypes_NestedEnum) String() string {
+	return proto.EnumName(TestAllTypes_NestedEnum_name, int32(x))
+}
+func (TestAllTypes_NestedEnum) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{2, 0} }
+
+// Represents a single test case's input.  The testee should:
+//
+//   1. parse this proto (which should always succeed)
+//   2. parse the protobuf or JSON payload in "payload" (which may fail)
+//   3. if the parse succeeded, serialize the message in the requested format.
+type ConformanceRequest struct {
+	// The payload (whether protobuf of JSON) is always for a TestAllTypes proto
+	// (see below).
+	//
+	// Types that are valid to be assigned to Payload:
+	//	*ConformanceRequest_ProtobufPayload
+	//	*ConformanceRequest_JsonPayload
+	Payload isConformanceRequest_Payload `protobuf_oneof:"payload"`
+	// Which format should the testee serialize its message to?
+	RequestedOutputFormat WireFormat `protobuf:"varint,3,opt,name=requested_output_format,json=requestedOutputFormat,enum=conformance.WireFormat" json:"requested_output_format,omitempty"`
+}
+
+func (m *ConformanceRequest) Reset()                    { *m = ConformanceRequest{} }
+func (m *ConformanceRequest) String() string            { return proto.CompactTextString(m) }
+func (*ConformanceRequest) ProtoMessage()               {}
+func (*ConformanceRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+type isConformanceRequest_Payload interface {
+	isConformanceRequest_Payload()
+}
+
+type ConformanceRequest_ProtobufPayload struct {
+	ProtobufPayload []byte `protobuf:"bytes,1,opt,name=protobuf_payload,json=protobufPayload,proto3,oneof"`
+}
+type ConformanceRequest_JsonPayload struct {
+	JsonPayload string `protobuf:"bytes,2,opt,name=json_payload,json=jsonPayload,oneof"`
+}
+
+func (*ConformanceRequest_ProtobufPayload) isConformanceRequest_Payload() {}
+func (*ConformanceRequest_JsonPayload) isConformanceRequest_Payload()     {}
+
+func (m *ConformanceRequest) GetPayload() isConformanceRequest_Payload {
+	if m != nil {
+		return m.Payload
+	}
+	return nil
+}
+
+func (m *ConformanceRequest) GetProtobufPayload() []byte {
+	if x, ok := m.GetPayload().(*ConformanceRequest_ProtobufPayload); ok {
+		return x.ProtobufPayload
+	}
+	return nil
+}
+
+func (m *ConformanceRequest) GetJsonPayload() string {
+	if x, ok := m.GetPayload().(*ConformanceRequest_JsonPayload); ok {
+		return x.JsonPayload
+	}
+	return ""
+}
+
+func (m *ConformanceRequest) GetRequestedOutputFormat() WireFormat {
+	if m != nil {
+		return m.RequestedOutputFormat
+	}
+	return WireFormat_UNSPECIFIED
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*ConformanceRequest) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _ConformanceRequest_OneofMarshaler, _ConformanceRequest_OneofUnmarshaler, _ConformanceRequest_OneofSizer, []interface{}{
+		(*ConformanceRequest_ProtobufPayload)(nil),
+		(*ConformanceRequest_JsonPayload)(nil),
+	}
+}
+
+func _ConformanceRequest_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*ConformanceRequest)
+	// payload
+	switch x := m.Payload.(type) {
+	case *ConformanceRequest_ProtobufPayload:
+		b.EncodeVarint(1<<3 | proto.WireBytes)
+		b.EncodeRawBytes(x.ProtobufPayload)
+	case *ConformanceRequest_JsonPayload:
+		b.EncodeVarint(2<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.JsonPayload)
+	case nil:
+	default:
+		return fmt.Errorf("ConformanceRequest.Payload has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _ConformanceRequest_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*ConformanceRequest)
+	switch tag {
+	case 1: // payload.protobuf_payload
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeRawBytes(true)
+		m.Payload = &ConformanceRequest_ProtobufPayload{x}
+		return true, err
+	case 2: // payload.json_payload
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Payload = &ConformanceRequest_JsonPayload{x}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _ConformanceRequest_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*ConformanceRequest)
+	// payload
+	switch x := m.Payload.(type) {
+	case *ConformanceRequest_ProtobufPayload:
+		n += proto.SizeVarint(1<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.ProtobufPayload)))
+		n += len(x.ProtobufPayload)
+	case *ConformanceRequest_JsonPayload:
+		n += proto.SizeVarint(2<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.JsonPayload)))
+		n += len(x.JsonPayload)
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+// Represents a single test case's output.
+type ConformanceResponse struct {
+	// Types that are valid to be assigned to Result:
+	//	*ConformanceResponse_ParseError
+	//	*ConformanceResponse_SerializeError
+	//	*ConformanceResponse_RuntimeError
+	//	*ConformanceResponse_ProtobufPayload
+	//	*ConformanceResponse_JsonPayload
+	//	*ConformanceResponse_Skipped
+	Result isConformanceResponse_Result `protobuf_oneof:"result"`
+}
+
+func (m *ConformanceResponse) Reset()                    { *m = ConformanceResponse{} }
+func (m *ConformanceResponse) String() string            { return proto.CompactTextString(m) }
+func (*ConformanceResponse) ProtoMessage()               {}
+func (*ConformanceResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+type isConformanceResponse_Result interface {
+	isConformanceResponse_Result()
+}
+
+type ConformanceResponse_ParseError struct {
+	ParseError string `protobuf:"bytes,1,opt,name=parse_error,json=parseError,oneof"`
+}
+type ConformanceResponse_SerializeError struct {
+	SerializeError string `protobuf:"bytes,6,opt,name=serialize_error,json=serializeError,oneof"`
+}
+type ConformanceResponse_RuntimeError struct {
+	RuntimeError string `protobuf:"bytes,2,opt,name=runtime_error,json=runtimeError,oneof"`
+}
+type ConformanceResponse_ProtobufPayload struct {
+	ProtobufPayload []byte `protobuf:"bytes,3,opt,name=protobuf_payload,json=protobufPayload,proto3,oneof"`
+}
+type ConformanceResponse_JsonPayload struct {
+	JsonPayload string `protobuf:"bytes,4,opt,name=json_payload,json=jsonPayload,oneof"`
+}
+type ConformanceResponse_Skipped struct {
+	Skipped string `protobuf:"bytes,5,opt,name=skipped,oneof"`
+}
+
+func (*ConformanceResponse_ParseError) isConformanceResponse_Result()      {}
+func (*ConformanceResponse_SerializeError) isConformanceResponse_Result()  {}
+func (*ConformanceResponse_RuntimeError) isConformanceResponse_Result()    {}
+func (*ConformanceResponse_ProtobufPayload) isConformanceResponse_Result() {}
+func (*ConformanceResponse_JsonPayload) isConformanceResponse_Result()     {}
+func (*ConformanceResponse_Skipped) isConformanceResponse_Result()         {}
+
+func (m *ConformanceResponse) GetResult() isConformanceResponse_Result {
+	if m != nil {
+		return m.Result
+	}
+	return nil
+}
+
+func (m *ConformanceResponse) GetParseError() string {
+	if x, ok := m.GetResult().(*ConformanceResponse_ParseError); ok {
+		return x.ParseError
+	}
+	return ""
+}
+
+func (m *ConformanceResponse) GetSerializeError() string {
+	if x, ok := m.GetResult().(*ConformanceResponse_SerializeError); ok {
+		return x.SerializeError
+	}
+	return ""
+}
+
+func (m *ConformanceResponse) GetRuntimeError() string {
+	if x, ok := m.GetResult().(*ConformanceResponse_RuntimeError); ok {
+		return x.RuntimeError
+	}
+	return ""
+}
+
+func (m *ConformanceResponse) GetProtobufPayload() []byte {
+	if x, ok := m.GetResult().(*ConformanceResponse_ProtobufPayload); ok {
+		return x.ProtobufPayload
+	}
+	return nil
+}
+
+func (m *ConformanceResponse) GetJsonPayload() string {
+	if x, ok := m.GetResult().(*ConformanceResponse_JsonPayload); ok {
+		return x.JsonPayload
+	}
+	return ""
+}
+
+func (m *ConformanceResponse) GetSkipped() string {
+	if x, ok := m.GetResult().(*ConformanceResponse_Skipped); ok {
+		return x.Skipped
+	}
+	return ""
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*ConformanceResponse) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _ConformanceResponse_OneofMarshaler, _ConformanceResponse_OneofUnmarshaler, _ConformanceResponse_OneofSizer, []interface{}{
+		(*ConformanceResponse_ParseError)(nil),
+		(*ConformanceResponse_SerializeError)(nil),
+		(*ConformanceResponse_RuntimeError)(nil),
+		(*ConformanceResponse_ProtobufPayload)(nil),
+		(*ConformanceResponse_JsonPayload)(nil),
+		(*ConformanceResponse_Skipped)(nil),
+	}
+}
+
+func _ConformanceResponse_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*ConformanceResponse)
+	// result
+	switch x := m.Result.(type) {
+	case *ConformanceResponse_ParseError:
+		b.EncodeVarint(1<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.ParseError)
+	case *ConformanceResponse_SerializeError:
+		b.EncodeVarint(6<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.SerializeError)
+	case *ConformanceResponse_RuntimeError:
+		b.EncodeVarint(2<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.RuntimeError)
+	case *ConformanceResponse_ProtobufPayload:
+		b.EncodeVarint(3<<3 | proto.WireBytes)
+		b.EncodeRawBytes(x.ProtobufPayload)
+	case *ConformanceResponse_JsonPayload:
+		b.EncodeVarint(4<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.JsonPayload)
+	case *ConformanceResponse_Skipped:
+		b.EncodeVarint(5<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.Skipped)
+	case nil:
+	default:
+		return fmt.Errorf("ConformanceResponse.Result has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _ConformanceResponse_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*ConformanceResponse)
+	switch tag {
+	case 1: // result.parse_error
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Result = &ConformanceResponse_ParseError{x}
+		return true, err
+	case 6: // result.serialize_error
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Result = &ConformanceResponse_SerializeError{x}
+		return true, err
+	case 2: // result.runtime_error
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Result = &ConformanceResponse_RuntimeError{x}
+		return true, err
+	case 3: // result.protobuf_payload
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeRawBytes(true)
+		m.Result = &ConformanceResponse_ProtobufPayload{x}
+		return true, err
+	case 4: // result.json_payload
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Result = &ConformanceResponse_JsonPayload{x}
+		return true, err
+	case 5: // result.skipped
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Result = &ConformanceResponse_Skipped{x}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _ConformanceResponse_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*ConformanceResponse)
+	// result
+	switch x := m.Result.(type) {
+	case *ConformanceResponse_ParseError:
+		n += proto.SizeVarint(1<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.ParseError)))
+		n += len(x.ParseError)
+	case *ConformanceResponse_SerializeError:
+		n += proto.SizeVarint(6<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.SerializeError)))
+		n += len(x.SerializeError)
+	case *ConformanceResponse_RuntimeError:
+		n += proto.SizeVarint(2<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.RuntimeError)))
+		n += len(x.RuntimeError)
+	case *ConformanceResponse_ProtobufPayload:
+		n += proto.SizeVarint(3<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.ProtobufPayload)))
+		n += len(x.ProtobufPayload)
+	case *ConformanceResponse_JsonPayload:
+		n += proto.SizeVarint(4<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.JsonPayload)))
+		n += len(x.JsonPayload)
+	case *ConformanceResponse_Skipped:
+		n += proto.SizeVarint(5<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.Skipped)))
+		n += len(x.Skipped)
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+// This proto includes every type of field in both singular and repeated
+// forms.
+type TestAllTypes struct {
+	// Singular
+	OptionalInt32          int32                       `protobuf:"varint,1,opt,name=optional_int32,json=optionalInt32" json:"optional_int32,omitempty"`
+	OptionalInt64          int64                       `protobuf:"varint,2,opt,name=optional_int64,json=optionalInt64" json:"optional_int64,omitempty"`
+	OptionalUint32         uint32                      `protobuf:"varint,3,opt,name=optional_uint32,json=optionalUint32" json:"optional_uint32,omitempty"`
+	OptionalUint64         uint64                      `protobuf:"varint,4,opt,name=optional_uint64,json=optionalUint64" json:"optional_uint64,omitempty"`
+	OptionalSint32         int32                       `protobuf:"zigzag32,5,opt,name=optional_sint32,json=optionalSint32" json:"optional_sint32,omitempty"`
+	OptionalSint64         int64                       `protobuf:"zigzag64,6,opt,name=optional_sint64,json=optionalSint64" json:"optional_sint64,omitempty"`
+	OptionalFixed32        uint32                      `protobuf:"fixed32,7,opt,name=optional_fixed32,json=optionalFixed32" json:"optional_fixed32,omitempty"`
+	OptionalFixed64        uint64                      `protobuf:"fixed64,8,opt,name=optional_fixed64,json=optionalFixed64" json:"optional_fixed64,omitempty"`
+	OptionalSfixed32       int32                       `protobuf:"fixed32,9,opt,name=optional_sfixed32,json=optionalSfixed32" json:"optional_sfixed32,omitempty"`
+	OptionalSfixed64       int64                       `protobuf:"fixed64,10,opt,name=optional_sfixed64,json=optionalSfixed64" json:"optional_sfixed64,omitempty"`
+	OptionalFloat          float32                     `protobuf:"fixed32,11,opt,name=optional_float,json=optionalFloat" json:"optional_float,omitempty"`
+	OptionalDouble         float64                     `protobuf:"fixed64,12,opt,name=optional_double,json=optionalDouble" json:"optional_double,omitempty"`
+	OptionalBool           bool                        `protobuf:"varint,13,opt,name=optional_bool,json=optionalBool" json:"optional_bool,omitempty"`
+	OptionalString         string                      `protobuf:"bytes,14,opt,name=optional_string,json=optionalString" json:"optional_string,omitempty"`
+	OptionalBytes          []byte                      `protobuf:"bytes,15,opt,name=optional_bytes,json=optionalBytes,proto3" json:"optional_bytes,omitempty"`
+	OptionalNestedMessage  *TestAllTypes_NestedMessage `protobuf:"bytes,18,opt,name=optional_nested_message,json=optionalNestedMessage" json:"optional_nested_message,omitempty"`
+	OptionalForeignMessage *ForeignMessage             `protobuf:"bytes,19,opt,name=optional_foreign_message,json=optionalForeignMessage" json:"optional_foreign_message,omitempty"`
+	OptionalNestedEnum     TestAllTypes_NestedEnum     `protobuf:"varint,21,opt,name=optional_nested_enum,json=optionalNestedEnum,enum=conformance.TestAllTypes_NestedEnum" json:"optional_nested_enum,omitempty"`
+	OptionalForeignEnum    ForeignEnum                 `protobuf:"varint,22,opt,name=optional_foreign_enum,json=optionalForeignEnum,enum=conformance.ForeignEnum" json:"optional_foreign_enum,omitempty"`
+	OptionalStringPiece    string                      `protobuf:"bytes,24,opt,name=optional_string_piece,json=optionalStringPiece" json:"optional_string_piece,omitempty"`
+	OptionalCord           string                      `protobuf:"bytes,25,opt,name=optional_cord,json=optionalCord" json:"optional_cord,omitempty"`
+	RecursiveMessage       *TestAllTypes               `protobuf:"bytes,27,opt,name=recursive_message,json=recursiveMessage" json:"recursive_message,omitempty"`
+	// Repeated
+	RepeatedInt32          []int32                       `protobuf:"varint,31,rep,packed,name=repeated_int32,json=repeatedInt32" json:"repeated_int32,omitempty"`
+	RepeatedInt64          []int64                       `protobuf:"varint,32,rep,packed,name=repeated_int64,json=repeatedInt64" json:"repeated_int64,omitempty"`
+	RepeatedUint32         []uint32                      `protobuf:"varint,33,rep,packed,name=repeated_uint32,json=repeatedUint32" json:"repeated_uint32,omitempty"`
+	RepeatedUint64         []uint64                      `protobuf:"varint,34,rep,packed,name=repeated_uint64,json=repeatedUint64" json:"repeated_uint64,omitempty"`
+	RepeatedSint32         []int32                       `protobuf:"zigzag32,35,rep,packed,name=repeated_sint32,json=repeatedSint32" json:"repeated_sint32,omitempty"`
+	RepeatedSint64         []int64                       `protobuf:"zigzag64,36,rep,packed,name=repeated_sint64,json=repeatedSint64" json:"repeated_sint64,omitempty"`
+	RepeatedFixed32        []uint32                      `protobuf:"fixed32,37,rep,packed,name=repeated_fixed32,json=repeatedFixed32" json:"repeated_fixed32,omitempty"`
+	RepeatedFixed64        []uint64                      `protobuf:"fixed64,38,rep,packed,name=repeated_fixed64,json=repeatedFixed64" json:"repeated_fixed64,omitempty"`
+	RepeatedSfixed32       []int32                       `protobuf:"fixed32,39,rep,packed,name=repeated_sfixed32,json=repeatedSfixed32" json:"repeated_sfixed32,omitempty"`
+	RepeatedSfixed64       []int64                       `protobuf:"fixed64,40,rep,packed,name=repeated_sfixed64,json=repeatedSfixed64" json:"repeated_sfixed64,omitempty"`
+	RepeatedFloat          []float32                     `protobuf:"fixed32,41,rep,packed,name=repeated_float,json=repeatedFloat" json:"repeated_float,omitempty"`
+	RepeatedDouble         []float64                     `protobuf:"fixed64,42,rep,packed,name=repeated_double,json=repeatedDouble" json:"repeated_double,omitempty"`
+	RepeatedBool           []bool                        `protobuf:"varint,43,rep,packed,name=repeated_bool,json=repeatedBool" json:"repeated_bool,omitempty"`
+	RepeatedString         []string                      `protobuf:"bytes,44,rep,name=repeated_string,json=repeatedString" json:"repeated_string,omitempty"`
+	RepeatedBytes          [][]byte                      `protobuf:"bytes,45,rep,name=repeated_bytes,json=repeatedBytes,proto3" json:"repeated_bytes,omitempty"`
+	RepeatedNestedMessage  []*TestAllTypes_NestedMessage `protobuf:"bytes,48,rep,name=repeated_nested_message,json=repeatedNestedMessage" json:"repeated_nested_message,omitempty"`
+	RepeatedForeignMessage []*ForeignMessage             `protobuf:"bytes,49,rep,name=repeated_foreign_message,json=repeatedForeignMessage" json:"repeated_foreign_message,omitempty"`
+	RepeatedNestedEnum     []TestAllTypes_NestedEnum     `protobuf:"varint,51,rep,packed,name=repeated_nested_enum,json=repeatedNestedEnum,enum=conformance.TestAllTypes_NestedEnum" json:"repeated_nested_enum,omitempty"`
+	RepeatedForeignEnum    []ForeignEnum                 `protobuf:"varint,52,rep,packed,name=repeated_foreign_enum,json=repeatedForeignEnum,enum=conformance.ForeignEnum" json:"repeated_foreign_enum,omitempty"`
+	RepeatedStringPiece    []string                      `protobuf:"bytes,54,rep,name=repeated_string_piece,json=repeatedStringPiece" json:"repeated_string_piece,omitempty"`
+	RepeatedCord           []string                      `protobuf:"bytes,55,rep,name=repeated_cord,json=repeatedCord" json:"repeated_cord,omitempty"`
+	// Map
+	MapInt32Int32           map[int32]int32                        `protobuf:"bytes,56,rep,name=map_int32_int32,json=mapInt32Int32" json:"map_int32_int32,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	MapInt64Int64           map[int64]int64                        `protobuf:"bytes,57,rep,name=map_int64_int64,json=mapInt64Int64" json:"map_int64_int64,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	MapUint32Uint32         map[uint32]uint32                      `protobuf:"bytes,58,rep,name=map_uint32_uint32,json=mapUint32Uint32" json:"map_uint32_uint32,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	MapUint64Uint64         map[uint64]uint64                      `protobuf:"bytes,59,rep,name=map_uint64_uint64,json=mapUint64Uint64" json:"map_uint64_uint64,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	MapSint32Sint32         map[int32]int32                        `protobuf:"bytes,60,rep,name=map_sint32_sint32,json=mapSint32Sint32" json:"map_sint32_sint32,omitempty" protobuf_key:"zigzag32,1,opt,name=key" protobuf_val:"zigzag32,2,opt,name=value"`
+	MapSint64Sint64         map[int64]int64                        `protobuf:"bytes,61,rep,name=map_sint64_sint64,json=mapSint64Sint64" json:"map_sint64_sint64,omitempty" protobuf_key:"zigzag64,1,opt,name=key" protobuf_val:"zigzag64,2,opt,name=value"`
+	MapFixed32Fixed32       map[uint32]uint32                      `protobuf:"bytes,62,rep,name=map_fixed32_fixed32,json=mapFixed32Fixed32" json:"map_fixed32_fixed32,omitempty" protobuf_key:"fixed32,1,opt,name=key" protobuf_val:"fixed32,2,opt,name=value"`
+	MapFixed64Fixed64       map[uint64]uint64                      `protobuf:"bytes,63,rep,name=map_fixed64_fixed64,json=mapFixed64Fixed64" json:"map_fixed64_fixed64,omitempty" protobuf_key:"fixed64,1,opt,name=key" protobuf_val:"fixed64,2,opt,name=value"`
+	MapSfixed32Sfixed32     map[int32]int32                        `protobuf:"bytes,64,rep,name=map_sfixed32_sfixed32,json=mapSfixed32Sfixed32" json:"map_sfixed32_sfixed32,omitempty" protobuf_key:"fixed32,1,opt,name=key" protobuf_val:"fixed32,2,opt,name=value"`
+	MapSfixed64Sfixed64     map[int64]int64                        `protobuf:"bytes,65,rep,name=map_sfixed64_sfixed64,json=mapSfixed64Sfixed64" json:"map_sfixed64_sfixed64,omitempty" protobuf_key:"fixed64,1,opt,name=key" protobuf_val:"fixed64,2,opt,name=value"`
+	MapInt32Float           map[int32]float32                      `protobuf:"bytes,66,rep,name=map_int32_float,json=mapInt32Float" json:"map_int32_float,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"fixed32,2,opt,name=value"`
+	MapInt32Double          map[int32]float64                      `protobuf:"bytes,67,rep,name=map_int32_double,json=mapInt32Double" json:"map_int32_double,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"fixed64,2,opt,name=value"`
+	MapBoolBool             map[bool]bool                          `protobuf:"bytes,68,rep,name=map_bool_bool,json=mapBoolBool" json:"map_bool_bool,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	MapStringString         map[string]string                      `protobuf:"bytes,69,rep,name=map_string_string,json=mapStringString" json:"map_string_string,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	MapStringBytes          map[string][]byte                      `protobuf:"bytes,70,rep,name=map_string_bytes,json=mapStringBytes" json:"map_string_bytes,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	MapStringNestedMessage  map[string]*TestAllTypes_NestedMessage `protobuf:"bytes,71,rep,name=map_string_nested_message,json=mapStringNestedMessage" json:"map_string_nested_message,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	MapStringForeignMessage map[string]*ForeignMessage             `protobuf:"bytes,72,rep,name=map_string_foreign_message,json=mapStringForeignMessage" json:"map_string_foreign_message,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	MapStringNestedEnum     map[string]TestAllTypes_NestedEnum     `protobuf:"bytes,73,rep,name=map_string_nested_enum,json=mapStringNestedEnum" json:"map_string_nested_enum,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"varint,2,opt,name=value,enum=conformance.TestAllTypes_NestedEnum"`
+	MapStringForeignEnum    map[string]ForeignEnum                 `protobuf:"bytes,74,rep,name=map_string_foreign_enum,json=mapStringForeignEnum" json:"map_string_foreign_enum,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"varint,2,opt,name=value,enum=conformance.ForeignEnum"`
+	// Types that are valid to be assigned to OneofField:
+	//	*TestAllTypes_OneofUint32
+	//	*TestAllTypes_OneofNestedMessage
+	//	*TestAllTypes_OneofString
+	//	*TestAllTypes_OneofBytes
+	//	*TestAllTypes_OneofBool
+	//	*TestAllTypes_OneofUint64
+	//	*TestAllTypes_OneofFloat
+	//	*TestAllTypes_OneofDouble
+	//	*TestAllTypes_OneofEnum
+	OneofField isTestAllTypes_OneofField `protobuf_oneof:"oneof_field"`
+	// Well-known types
+	OptionalBoolWrapper   *google_protobuf5.BoolValue     `protobuf:"bytes,201,opt,name=optional_bool_wrapper,json=optionalBoolWrapper" json:"optional_bool_wrapper,omitempty"`
+	OptionalInt32Wrapper  *google_protobuf5.Int32Value    `protobuf:"bytes,202,opt,name=optional_int32_wrapper,json=optionalInt32Wrapper" json:"optional_int32_wrapper,omitempty"`
+	OptionalInt64Wrapper  *google_protobuf5.Int64Value    `protobuf:"bytes,203,opt,name=optional_int64_wrapper,json=optionalInt64Wrapper" json:"optional_int64_wrapper,omitempty"`
+	OptionalUint32Wrapper *google_protobuf5.UInt32Value   `protobuf:"bytes,204,opt,name=optional_uint32_wrapper,json=optionalUint32Wrapper" json:"optional_uint32_wrapper,omitempty"`
+	OptionalUint64Wrapper *google_protobuf5.UInt64Value   `protobuf:"bytes,205,opt,name=optional_uint64_wrapper,json=optionalUint64Wrapper" json:"optional_uint64_wrapper,omitempty"`
+	OptionalFloatWrapper  *google_protobuf5.FloatValue    `protobuf:"bytes,206,opt,name=optional_float_wrapper,json=optionalFloatWrapper" json:"optional_float_wrapper,omitempty"`
+	OptionalDoubleWrapper *google_protobuf5.DoubleValue   `protobuf:"bytes,207,opt,name=optional_double_wrapper,json=optionalDoubleWrapper" json:"optional_double_wrapper,omitempty"`
+	OptionalStringWrapper *google_protobuf5.StringValue   `protobuf:"bytes,208,opt,name=optional_string_wrapper,json=optionalStringWrapper" json:"optional_string_wrapper,omitempty"`
+	OptionalBytesWrapper  *google_protobuf5.BytesValue    `protobuf:"bytes,209,opt,name=optional_bytes_wrapper,json=optionalBytesWrapper" json:"optional_bytes_wrapper,omitempty"`
+	RepeatedBoolWrapper   []*google_protobuf5.BoolValue   `protobuf:"bytes,211,rep,name=repeated_bool_wrapper,json=repeatedBoolWrapper" json:"repeated_bool_wrapper,omitempty"`
+	RepeatedInt32Wrapper  []*google_protobuf5.Int32Value  `protobuf:"bytes,212,rep,name=repeated_int32_wrapper,json=repeatedInt32Wrapper" json:"repeated_int32_wrapper,omitempty"`
+	RepeatedInt64Wrapper  []*google_protobuf5.Int64Value  `protobuf:"bytes,213,rep,name=repeated_int64_wrapper,json=repeatedInt64Wrapper" json:"repeated_int64_wrapper,omitempty"`
+	RepeatedUint32Wrapper []*google_protobuf5.UInt32Value `protobuf:"bytes,214,rep,name=repeated_uint32_wrapper,json=repeatedUint32Wrapper" json:"repeated_uint32_wrapper,omitempty"`
+	RepeatedUint64Wrapper []*google_protobuf5.UInt64Value `protobuf:"bytes,215,rep,name=repeated_uint64_wrapper,json=repeatedUint64Wrapper" json:"repeated_uint64_wrapper,omitempty"`
+	RepeatedFloatWrapper  []*google_protobuf5.FloatValue  `protobuf:"bytes,216,rep,name=repeated_float_wrapper,json=repeatedFloatWrapper" json:"repeated_float_wrapper,omitempty"`
+	RepeatedDoubleWrapper []*google_protobuf5.DoubleValue `protobuf:"bytes,217,rep,name=repeated_double_wrapper,json=repeatedDoubleWrapper" json:"repeated_double_wrapper,omitempty"`
+	RepeatedStringWrapper []*google_protobuf5.StringValue `protobuf:"bytes,218,rep,name=repeated_string_wrapper,json=repeatedStringWrapper" json:"repeated_string_wrapper,omitempty"`
+	RepeatedBytesWrapper  []*google_protobuf5.BytesValue  `protobuf:"bytes,219,rep,name=repeated_bytes_wrapper,json=repeatedBytesWrapper" json:"repeated_bytes_wrapper,omitempty"`
+	OptionalDuration      *google_protobuf1.Duration      `protobuf:"bytes,301,opt,name=optional_duration,json=optionalDuration" json:"optional_duration,omitempty"`
+	OptionalTimestamp     *google_protobuf4.Timestamp     `protobuf:"bytes,302,opt,name=optional_timestamp,json=optionalTimestamp" json:"optional_timestamp,omitempty"`
+	OptionalFieldMask     *google_protobuf2.FieldMask     `protobuf:"bytes,303,opt,name=optional_field_mask,json=optionalFieldMask" json:"optional_field_mask,omitempty"`
+	OptionalStruct        *google_protobuf3.Struct        `protobuf:"bytes,304,opt,name=optional_struct,json=optionalStruct" json:"optional_struct,omitempty"`
+	OptionalAny           *google_protobuf.Any            `protobuf:"bytes,305,opt,name=optional_any,json=optionalAny" json:"optional_any,omitempty"`
+	OptionalValue         *google_protobuf3.Value         `protobuf:"bytes,306,opt,name=optional_value,json=optionalValue" json:"optional_value,omitempty"`
+	RepeatedDuration      []*google_protobuf1.Duration    `protobuf:"bytes,311,rep,name=repeated_duration,json=repeatedDuration" json:"repeated_duration,omitempty"`
+	RepeatedTimestamp     []*google_protobuf4.Timestamp   `protobuf:"bytes,312,rep,name=repeated_timestamp,json=repeatedTimestamp" json:"repeated_timestamp,omitempty"`
+	RepeatedFieldmask     []*google_protobuf2.FieldMask   `protobuf:"bytes,313,rep,name=repeated_fieldmask,json=repeatedFieldmask" json:"repeated_fieldmask,omitempty"`
+	RepeatedStruct        []*google_protobuf3.Struct      `protobuf:"bytes,324,rep,name=repeated_struct,json=repeatedStruct" json:"repeated_struct,omitempty"`
+	RepeatedAny           []*google_protobuf.Any          `protobuf:"bytes,315,rep,name=repeated_any,json=repeatedAny" json:"repeated_any,omitempty"`
+	RepeatedValue         []*google_protobuf3.Value       `protobuf:"bytes,316,rep,name=repeated_value,json=repeatedValue" json:"repeated_value,omitempty"`
+	// Test field-name-to-JSON-name convention.
+	// (protobuf says names can be any valid C/C++ identifier.)
+	Fieldname1    int32 `protobuf:"varint,401,opt,name=fieldname1" json:"fieldname1,omitempty"`
+	FieldName2    int32 `protobuf:"varint,402,opt,name=field_name2,json=fieldName2" json:"field_name2,omitempty"`
+	XFieldName3   int32 `protobuf:"varint,403,opt,name=_field_name3,json=FieldName3" json:"_field_name3,omitempty"`
+	Field_Name4_  int32 `protobuf:"varint,404,opt,name=field__name4_,json=fieldName4" json:"field__name4_,omitempty"`
+	Field0Name5   int32 `protobuf:"varint,405,opt,name=field0name5" json:"field0name5,omitempty"`
+	Field_0Name6  int32 `protobuf:"varint,406,opt,name=field_0_name6,json=field0Name6" json:"field_0_name6,omitempty"`
+	FieldName7    int32 `protobuf:"varint,407,opt,name=fieldName7" json:"fieldName7,omitempty"`
+	FieldName8    int32 `protobuf:"varint,408,opt,name=FieldName8" json:"FieldName8,omitempty"`
+	Field_Name9   int32 `protobuf:"varint,409,opt,name=field_Name9,json=fieldName9" json:"field_Name9,omitempty"`
+	Field_Name10  int32 `protobuf:"varint,410,opt,name=Field_Name10,json=FieldName10" json:"Field_Name10,omitempty"`
+	FIELD_NAME11  int32 `protobuf:"varint,411,opt,name=FIELD_NAME11,json=FIELDNAME11" json:"FIELD_NAME11,omitempty"`
+	FIELDName12   int32 `protobuf:"varint,412,opt,name=FIELD_name12,json=FIELDName12" json:"FIELD_name12,omitempty"`
+	XFieldName13  int32 `protobuf:"varint,413,opt,name=__field_name13,json=FieldName13" json:"__field_name13,omitempty"`
+	X_FieldName14 int32 `protobuf:"varint,414,opt,name=__Field_name14,json=FieldName14" json:"__Field_name14,omitempty"`
+	Field_Name15  int32 `protobuf:"varint,415,opt,name=field__name15,json=fieldName15" json:"field__name15,omitempty"`
+	Field__Name16 int32 `protobuf:"varint,416,opt,name=field__Name16,json=fieldName16" json:"field__Name16,omitempty"`
+	FieldName17__ int32 `protobuf:"varint,417,opt,name=field_name17__,json=fieldName17" json:"field_name17__,omitempty"`
+	FieldName18__ int32 `protobuf:"varint,418,opt,name=Field_name18__,json=FieldName18" json:"Field_name18__,omitempty"`
+}
+
+func (m *TestAllTypes) Reset()                    { *m = TestAllTypes{} }
+func (m *TestAllTypes) String() string            { return proto.CompactTextString(m) }
+func (*TestAllTypes) ProtoMessage()               {}
+func (*TestAllTypes) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+
+type isTestAllTypes_OneofField interface {
+	isTestAllTypes_OneofField()
+}
+
+type TestAllTypes_OneofUint32 struct {
+	OneofUint32 uint32 `protobuf:"varint,111,opt,name=oneof_uint32,json=oneofUint32,oneof"`
+}
+type TestAllTypes_OneofNestedMessage struct {
+	OneofNestedMessage *TestAllTypes_NestedMessage `protobuf:"bytes,112,opt,name=oneof_nested_message,json=oneofNestedMessage,oneof"`
+}
+type TestAllTypes_OneofString struct {
+	OneofString string `protobuf:"bytes,113,opt,name=oneof_string,json=oneofString,oneof"`
+}
+type TestAllTypes_OneofBytes struct {
+	OneofBytes []byte `protobuf:"bytes,114,opt,name=oneof_bytes,json=oneofBytes,proto3,oneof"`
+}
+type TestAllTypes_OneofBool struct {
+	OneofBool bool `protobuf:"varint,115,opt,name=oneof_bool,json=oneofBool,oneof"`
+}
+type TestAllTypes_OneofUint64 struct {
+	OneofUint64 uint64 `protobuf:"varint,116,opt,name=oneof_uint64,json=oneofUint64,oneof"`
+}
+type TestAllTypes_OneofFloat struct {
+	OneofFloat float32 `protobuf:"fixed32,117,opt,name=oneof_float,json=oneofFloat,oneof"`
+}
+type TestAllTypes_OneofDouble struct {
+	OneofDouble float64 `protobuf:"fixed64,118,opt,name=oneof_double,json=oneofDouble,oneof"`
+}
+type TestAllTypes_OneofEnum struct {
+	OneofEnum TestAllTypes_NestedEnum `protobuf:"varint,119,opt,name=oneof_enum,json=oneofEnum,enum=conformance.TestAllTypes_NestedEnum,oneof"`
+}
+
+func (*TestAllTypes_OneofUint32) isTestAllTypes_OneofField()        {}
+func (*TestAllTypes_OneofNestedMessage) isTestAllTypes_OneofField() {}
+func (*TestAllTypes_OneofString) isTestAllTypes_OneofField()        {}
+func (*TestAllTypes_OneofBytes) isTestAllTypes_OneofField()         {}
+func (*TestAllTypes_OneofBool) isTestAllTypes_OneofField()          {}
+func (*TestAllTypes_OneofUint64) isTestAllTypes_OneofField()        {}
+func (*TestAllTypes_OneofFloat) isTestAllTypes_OneofField()         {}
+func (*TestAllTypes_OneofDouble) isTestAllTypes_OneofField()        {}
+func (*TestAllTypes_OneofEnum) isTestAllTypes_OneofField()          {}
+
+func (m *TestAllTypes) GetOneofField() isTestAllTypes_OneofField {
+	if m != nil {
+		return m.OneofField
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalInt32() int32 {
+	if m != nil {
+		return m.OptionalInt32
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOptionalInt64() int64 {
+	if m != nil {
+		return m.OptionalInt64
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOptionalUint32() uint32 {
+	if m != nil {
+		return m.OptionalUint32
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOptionalUint64() uint64 {
+	if m != nil {
+		return m.OptionalUint64
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOptionalSint32() int32 {
+	if m != nil {
+		return m.OptionalSint32
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOptionalSint64() int64 {
+	if m != nil {
+		return m.OptionalSint64
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOptionalFixed32() uint32 {
+	if m != nil {
+		return m.OptionalFixed32
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOptionalFixed64() uint64 {
+	if m != nil {
+		return m.OptionalFixed64
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOptionalSfixed32() int32 {
+	if m != nil {
+		return m.OptionalSfixed32
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOptionalSfixed64() int64 {
+	if m != nil {
+		return m.OptionalSfixed64
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOptionalFloat() float32 {
+	if m != nil {
+		return m.OptionalFloat
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOptionalDouble() float64 {
+	if m != nil {
+		return m.OptionalDouble
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOptionalBool() bool {
+	if m != nil {
+		return m.OptionalBool
+	}
+	return false
+}
+
+func (m *TestAllTypes) GetOptionalString() string {
+	if m != nil {
+		return m.OptionalString
+	}
+	return ""
+}
+
+func (m *TestAllTypes) GetOptionalBytes() []byte {
+	if m != nil {
+		return m.OptionalBytes
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalNestedMessage() *TestAllTypes_NestedMessage {
+	if m != nil {
+		return m.OptionalNestedMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalForeignMessage() *ForeignMessage {
+	if m != nil {
+		return m.OptionalForeignMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalNestedEnum() TestAllTypes_NestedEnum {
+	if m != nil {
+		return m.OptionalNestedEnum
+	}
+	return TestAllTypes_FOO
+}
+
+func (m *TestAllTypes) GetOptionalForeignEnum() ForeignEnum {
+	if m != nil {
+		return m.OptionalForeignEnum
+	}
+	return ForeignEnum_FOREIGN_FOO
+}
+
+func (m *TestAllTypes) GetOptionalStringPiece() string {
+	if m != nil {
+		return m.OptionalStringPiece
+	}
+	return ""
+}
+
+func (m *TestAllTypes) GetOptionalCord() string {
+	if m != nil {
+		return m.OptionalCord
+	}
+	return ""
+}
+
+func (m *TestAllTypes) GetRecursiveMessage() *TestAllTypes {
+	if m != nil {
+		return m.RecursiveMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedInt32() []int32 {
+	if m != nil {
+		return m.RepeatedInt32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedInt64() []int64 {
+	if m != nil {
+		return m.RepeatedInt64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedUint32() []uint32 {
+	if m != nil {
+		return m.RepeatedUint32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedUint64() []uint64 {
+	if m != nil {
+		return m.RepeatedUint64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedSint32() []int32 {
+	if m != nil {
+		return m.RepeatedSint32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedSint64() []int64 {
+	if m != nil {
+		return m.RepeatedSint64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedFixed32() []uint32 {
+	if m != nil {
+		return m.RepeatedFixed32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedFixed64() []uint64 {
+	if m != nil {
+		return m.RepeatedFixed64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedSfixed32() []int32 {
+	if m != nil {
+		return m.RepeatedSfixed32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedSfixed64() []int64 {
+	if m != nil {
+		return m.RepeatedSfixed64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedFloat() []float32 {
+	if m != nil {
+		return m.RepeatedFloat
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedDouble() []float64 {
+	if m != nil {
+		return m.RepeatedDouble
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedBool() []bool {
+	if m != nil {
+		return m.RepeatedBool
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedString() []string {
+	if m != nil {
+		return m.RepeatedString
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedBytes() [][]byte {
+	if m != nil {
+		return m.RepeatedBytes
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedNestedMessage() []*TestAllTypes_NestedMessage {
+	if m != nil {
+		return m.RepeatedNestedMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedForeignMessage() []*ForeignMessage {
+	if m != nil {
+		return m.RepeatedForeignMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedNestedEnum() []TestAllTypes_NestedEnum {
+	if m != nil {
+		return m.RepeatedNestedEnum
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedForeignEnum() []ForeignEnum {
+	if m != nil {
+		return m.RepeatedForeignEnum
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedStringPiece() []string {
+	if m != nil {
+		return m.RepeatedStringPiece
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedCord() []string {
+	if m != nil {
+		return m.RepeatedCord
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapInt32Int32() map[int32]int32 {
+	if m != nil {
+		return m.MapInt32Int32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapInt64Int64() map[int64]int64 {
+	if m != nil {
+		return m.MapInt64Int64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapUint32Uint32() map[uint32]uint32 {
+	if m != nil {
+		return m.MapUint32Uint32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapUint64Uint64() map[uint64]uint64 {
+	if m != nil {
+		return m.MapUint64Uint64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapSint32Sint32() map[int32]int32 {
+	if m != nil {
+		return m.MapSint32Sint32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapSint64Sint64() map[int64]int64 {
+	if m != nil {
+		return m.MapSint64Sint64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapFixed32Fixed32() map[uint32]uint32 {
+	if m != nil {
+		return m.MapFixed32Fixed32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapFixed64Fixed64() map[uint64]uint64 {
+	if m != nil {
+		return m.MapFixed64Fixed64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapSfixed32Sfixed32() map[int32]int32 {
+	if m != nil {
+		return m.MapSfixed32Sfixed32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapSfixed64Sfixed64() map[int64]int64 {
+	if m != nil {
+		return m.MapSfixed64Sfixed64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapInt32Float() map[int32]float32 {
+	if m != nil {
+		return m.MapInt32Float
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapInt32Double() map[int32]float64 {
+	if m != nil {
+		return m.MapInt32Double
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapBoolBool() map[bool]bool {
+	if m != nil {
+		return m.MapBoolBool
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapStringString() map[string]string {
+	if m != nil {
+		return m.MapStringString
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapStringBytes() map[string][]byte {
+	if m != nil {
+		return m.MapStringBytes
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapStringNestedMessage() map[string]*TestAllTypes_NestedMessage {
+	if m != nil {
+		return m.MapStringNestedMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapStringForeignMessage() map[string]*ForeignMessage {
+	if m != nil {
+		return m.MapStringForeignMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapStringNestedEnum() map[string]TestAllTypes_NestedEnum {
+	if m != nil {
+		return m.MapStringNestedEnum
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapStringForeignEnum() map[string]ForeignEnum {
+	if m != nil {
+		return m.MapStringForeignEnum
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOneofUint32() uint32 {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofUint32); ok {
+		return x.OneofUint32
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOneofNestedMessage() *TestAllTypes_NestedMessage {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofNestedMessage); ok {
+		return x.OneofNestedMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOneofString() string {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofString); ok {
+		return x.OneofString
+	}
+	return ""
+}
+
+func (m *TestAllTypes) GetOneofBytes() []byte {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofBytes); ok {
+		return x.OneofBytes
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOneofBool() bool {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofBool); ok {
+		return x.OneofBool
+	}
+	return false
+}
+
+func (m *TestAllTypes) GetOneofUint64() uint64 {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofUint64); ok {
+		return x.OneofUint64
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOneofFloat() float32 {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofFloat); ok {
+		return x.OneofFloat
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOneofDouble() float64 {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofDouble); ok {
+		return x.OneofDouble
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOneofEnum() TestAllTypes_NestedEnum {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofEnum); ok {
+		return x.OneofEnum
+	}
+	return TestAllTypes_FOO
+}
+
+func (m *TestAllTypes) GetOptionalBoolWrapper() *google_protobuf5.BoolValue {
+	if m != nil {
+		return m.OptionalBoolWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalInt32Wrapper() *google_protobuf5.Int32Value {
+	if m != nil {
+		return m.OptionalInt32Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalInt64Wrapper() *google_protobuf5.Int64Value {
+	if m != nil {
+		return m.OptionalInt64Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalUint32Wrapper() *google_protobuf5.UInt32Value {
+	if m != nil {
+		return m.OptionalUint32Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalUint64Wrapper() *google_protobuf5.UInt64Value {
+	if m != nil {
+		return m.OptionalUint64Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalFloatWrapper() *google_protobuf5.FloatValue {
+	if m != nil {
+		return m.OptionalFloatWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalDoubleWrapper() *google_protobuf5.DoubleValue {
+	if m != nil {
+		return m.OptionalDoubleWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalStringWrapper() *google_protobuf5.StringValue {
+	if m != nil {
+		return m.OptionalStringWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalBytesWrapper() *google_protobuf5.BytesValue {
+	if m != nil {
+		return m.OptionalBytesWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedBoolWrapper() []*google_protobuf5.BoolValue {
+	if m != nil {
+		return m.RepeatedBoolWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedInt32Wrapper() []*google_protobuf5.Int32Value {
+	if m != nil {
+		return m.RepeatedInt32Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedInt64Wrapper() []*google_protobuf5.Int64Value {
+	if m != nil {
+		return m.RepeatedInt64Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedUint32Wrapper() []*google_protobuf5.UInt32Value {
+	if m != nil {
+		return m.RepeatedUint32Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedUint64Wrapper() []*google_protobuf5.UInt64Value {
+	if m != nil {
+		return m.RepeatedUint64Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedFloatWrapper() []*google_protobuf5.FloatValue {
+	if m != nil {
+		return m.RepeatedFloatWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedDoubleWrapper() []*google_protobuf5.DoubleValue {
+	if m != nil {
+		return m.RepeatedDoubleWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedStringWrapper() []*google_protobuf5.StringValue {
+	if m != nil {
+		return m.RepeatedStringWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedBytesWrapper() []*google_protobuf5.BytesValue {
+	if m != nil {
+		return m.RepeatedBytesWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalDuration() *google_protobuf1.Duration {
+	if m != nil {
+		return m.OptionalDuration
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalTimestamp() *google_protobuf4.Timestamp {
+	if m != nil {
+		return m.OptionalTimestamp
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalFieldMask() *google_protobuf2.FieldMask {
+	if m != nil {
+		return m.OptionalFieldMask
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalStruct() *google_protobuf3.Struct {
+	if m != nil {
+		return m.OptionalStruct
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalAny() *google_protobuf.Any {
+	if m != nil {
+		return m.OptionalAny
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalValue() *google_protobuf3.Value {
+	if m != nil {
+		return m.OptionalValue
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedDuration() []*google_protobuf1.Duration {
+	if m != nil {
+		return m.RepeatedDuration
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedTimestamp() []*google_protobuf4.Timestamp {
+	if m != nil {
+		return m.RepeatedTimestamp
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedFieldmask() []*google_protobuf2.FieldMask {
+	if m != nil {
+		return m.RepeatedFieldmask
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedStruct() []*google_protobuf3.Struct {
+	if m != nil {
+		return m.RepeatedStruct
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedAny() []*google_protobuf.Any {
+	if m != nil {
+		return m.RepeatedAny
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedValue() []*google_protobuf3.Value {
+	if m != nil {
+		return m.RepeatedValue
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetFieldname1() int32 {
+	if m != nil {
+		return m.Fieldname1
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetFieldName2() int32 {
+	if m != nil {
+		return m.FieldName2
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetXFieldName3() int32 {
+	if m != nil {
+		return m.XFieldName3
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetField_Name4_() int32 {
+	if m != nil {
+		return m.Field_Name4_
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetField0Name5() int32 {
+	if m != nil {
+		return m.Field0Name5
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetField_0Name6() int32 {
+	if m != nil {
+		return m.Field_0Name6
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetFieldName7() int32 {
+	if m != nil {
+		return m.FieldName7
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetFieldName8() int32 {
+	if m != nil {
+		return m.FieldName8
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetField_Name9() int32 {
+	if m != nil {
+		return m.Field_Name9
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetField_Name10() int32 {
+	if m != nil {
+		return m.Field_Name10
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetFIELD_NAME11() int32 {
+	if m != nil {
+		return m.FIELD_NAME11
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetFIELDName12() int32 {
+	if m != nil {
+		return m.FIELDName12
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetXFieldName13() int32 {
+	if m != nil {
+		return m.XFieldName13
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetX_FieldName14() int32 {
+	if m != nil {
+		return m.X_FieldName14
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetField_Name15() int32 {
+	if m != nil {
+		return m.Field_Name15
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetField__Name16() int32 {
+	if m != nil {
+		return m.Field__Name16
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetFieldName17__() int32 {
+	if m != nil {
+		return m.FieldName17__
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetFieldName18__() int32 {
+	if m != nil {
+		return m.FieldName18__
+	}
+	return 0
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*TestAllTypes) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _TestAllTypes_OneofMarshaler, _TestAllTypes_OneofUnmarshaler, _TestAllTypes_OneofSizer, []interface{}{
+		(*TestAllTypes_OneofUint32)(nil),
+		(*TestAllTypes_OneofNestedMessage)(nil),
+		(*TestAllTypes_OneofString)(nil),
+		(*TestAllTypes_OneofBytes)(nil),
+		(*TestAllTypes_OneofBool)(nil),
+		(*TestAllTypes_OneofUint64)(nil),
+		(*TestAllTypes_OneofFloat)(nil),
+		(*TestAllTypes_OneofDouble)(nil),
+		(*TestAllTypes_OneofEnum)(nil),
+	}
+}
+
+func _TestAllTypes_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*TestAllTypes)
+	// oneof_field
+	switch x := m.OneofField.(type) {
+	case *TestAllTypes_OneofUint32:
+		b.EncodeVarint(111<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.OneofUint32))
+	case *TestAllTypes_OneofNestedMessage:
+		b.EncodeVarint(112<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.OneofNestedMessage); err != nil {
+			return err
+		}
+	case *TestAllTypes_OneofString:
+		b.EncodeVarint(113<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.OneofString)
+	case *TestAllTypes_OneofBytes:
+		b.EncodeVarint(114<<3 | proto.WireBytes)
+		b.EncodeRawBytes(x.OneofBytes)
+	case *TestAllTypes_OneofBool:
+		t := uint64(0)
+		if x.OneofBool {
+			t = 1
+		}
+		b.EncodeVarint(115<<3 | proto.WireVarint)
+		b.EncodeVarint(t)
+	case *TestAllTypes_OneofUint64:
+		b.EncodeVarint(116<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.OneofUint64))
+	case *TestAllTypes_OneofFloat:
+		b.EncodeVarint(117<<3 | proto.WireFixed32)
+		b.EncodeFixed32(uint64(math.Float32bits(x.OneofFloat)))
+	case *TestAllTypes_OneofDouble:
+		b.EncodeVarint(118<<3 | proto.WireFixed64)
+		b.EncodeFixed64(math.Float64bits(x.OneofDouble))
+	case *TestAllTypes_OneofEnum:
+		b.EncodeVarint(119<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.OneofEnum))
+	case nil:
+	default:
+		return fmt.Errorf("TestAllTypes.OneofField has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _TestAllTypes_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*TestAllTypes)
+	switch tag {
+	case 111: // oneof_field.oneof_uint32
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.OneofField = &TestAllTypes_OneofUint32{uint32(x)}
+		return true, err
+	case 112: // oneof_field.oneof_nested_message
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(TestAllTypes_NestedMessage)
+		err := b.DecodeMessage(msg)
+		m.OneofField = &TestAllTypes_OneofNestedMessage{msg}
+		return true, err
+	case 113: // oneof_field.oneof_string
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.OneofField = &TestAllTypes_OneofString{x}
+		return true, err
+	case 114: // oneof_field.oneof_bytes
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeRawBytes(true)
+		m.OneofField = &TestAllTypes_OneofBytes{x}
+		return true, err
+	case 115: // oneof_field.oneof_bool
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.OneofField = &TestAllTypes_OneofBool{x != 0}
+		return true, err
+	case 116: // oneof_field.oneof_uint64
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.OneofField = &TestAllTypes_OneofUint64{x}
+		return true, err
+	case 117: // oneof_field.oneof_float
+		if wire != proto.WireFixed32 {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeFixed32()
+		m.OneofField = &TestAllTypes_OneofFloat{math.Float32frombits(uint32(x))}
+		return true, err
+	case 118: // oneof_field.oneof_double
+		if wire != proto.WireFixed64 {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeFixed64()
+		m.OneofField = &TestAllTypes_OneofDouble{math.Float64frombits(x)}
+		return true, err
+	case 119: // oneof_field.oneof_enum
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.OneofField = &TestAllTypes_OneofEnum{TestAllTypes_NestedEnum(x)}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _TestAllTypes_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*TestAllTypes)
+	// oneof_field
+	switch x := m.OneofField.(type) {
+	case *TestAllTypes_OneofUint32:
+		n += proto.SizeVarint(111<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.OneofUint32))
+	case *TestAllTypes_OneofNestedMessage:
+		s := proto.Size(x.OneofNestedMessage)
+		n += proto.SizeVarint(112<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case *TestAllTypes_OneofString:
+		n += proto.SizeVarint(113<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.OneofString)))
+		n += len(x.OneofString)
+	case *TestAllTypes_OneofBytes:
+		n += proto.SizeVarint(114<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.OneofBytes)))
+		n += len(x.OneofBytes)
+	case *TestAllTypes_OneofBool:
+		n += proto.SizeVarint(115<<3 | proto.WireVarint)
+		n += 1
+	case *TestAllTypes_OneofUint64:
+		n += proto.SizeVarint(116<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.OneofUint64))
+	case *TestAllTypes_OneofFloat:
+		n += proto.SizeVarint(117<<3 | proto.WireFixed32)
+		n += 4
+	case *TestAllTypes_OneofDouble:
+		n += proto.SizeVarint(118<<3 | proto.WireFixed64)
+		n += 8
+	case *TestAllTypes_OneofEnum:
+		n += proto.SizeVarint(119<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.OneofEnum))
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+type TestAllTypes_NestedMessage struct {
+	A           int32         `protobuf:"varint,1,opt,name=a" json:"a,omitempty"`
+	Corecursive *TestAllTypes `protobuf:"bytes,2,opt,name=corecursive" json:"corecursive,omitempty"`
+}
+
+func (m *TestAllTypes_NestedMessage) Reset()                    { *m = TestAllTypes_NestedMessage{} }
+func (m *TestAllTypes_NestedMessage) String() string            { return proto.CompactTextString(m) }
+func (*TestAllTypes_NestedMessage) ProtoMessage()               {}
+func (*TestAllTypes_NestedMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2, 0} }
+
+func (m *TestAllTypes_NestedMessage) GetA() int32 {
+	if m != nil {
+		return m.A
+	}
+	return 0
+}
+
+func (m *TestAllTypes_NestedMessage) GetCorecursive() *TestAllTypes {
+	if m != nil {
+		return m.Corecursive
+	}
+	return nil
+}
+
+type ForeignMessage struct {
+	C int32 `protobuf:"varint,1,opt,name=c" json:"c,omitempty"`
+}
+
+func (m *ForeignMessage) Reset()                    { *m = ForeignMessage{} }
+func (m *ForeignMessage) String() string            { return proto.CompactTextString(m) }
+func (*ForeignMessage) ProtoMessage()               {}
+func (*ForeignMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
+
+func (m *ForeignMessage) GetC() int32 {
+	if m != nil {
+		return m.C
+	}
+	return 0
+}
+
+func init() {
+	proto.RegisterType((*ConformanceRequest)(nil), "conformance.ConformanceRequest")
+	proto.RegisterType((*ConformanceResponse)(nil), "conformance.ConformanceResponse")
+	proto.RegisterType((*TestAllTypes)(nil), "conformance.TestAllTypes")
+	proto.RegisterType((*TestAllTypes_NestedMessage)(nil), "conformance.TestAllTypes.NestedMessage")
+	proto.RegisterType((*ForeignMessage)(nil), "conformance.ForeignMessage")
+	proto.RegisterEnum("conformance.WireFormat", WireFormat_name, WireFormat_value)
+	proto.RegisterEnum("conformance.ForeignEnum", ForeignEnum_name, ForeignEnum_value)
+	proto.RegisterEnum("conformance.TestAllTypes_NestedEnum", TestAllTypes_NestedEnum_name, TestAllTypes_NestedEnum_value)
+}
+
+func init() { proto.RegisterFile("conformance_proto/conformance.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
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+	0x97, 0xb4, 0x0c, 0x10, 0x5b, 0x5a, 0xa8, 0xb4, 0xd3, 0x04, 0xe9, 0x1f, 0xb2, 0x42, 0xa5, 0xcd,
+	0xa7, 0x85, 0x4a, 0x8d, 0x69, 0xb4, 0x4c, 0x61, 0x38, 0xed, 0x1f, 0xb3, 0x68, 0xe9, 0x4d, 0xa8,
+	0xd1, 0x52, 0x63, 0x5a, 0x06, 0xc8, 0x3d, 0x2a, 0x58, 0xff, 0x94, 0x95, 0x01, 0x72, 0xdb, 0x6a,
+	0x19, 0x20, 0x36, 0xce, 0xb9, 0x27, 0x3d, 0x1c, 0x28, 0xcd, 0xff, 0x67, 0x83, 0xc8, 0x60, 0xdf,
+	0xe6, 0x97, 0x1f, 0x0a, 0xa5, 0x20, 0xd5, 0x91, 0x81, 0x60, 0xfc, 0x8b, 0xc1, 0x9e, 0xb4, 0xfa,
+	0x35, 0xbf, 0x32, 0x58, 0xc8, 0xe0, 0x94, 0x1a, 0xea, 0xaf, 0x7d, 0x38, 0x45, 0xf3, 0x2b, 0x53,
+	0x08, 0xa9, 0x46, 0xda, 0x30, 0x42, 0x90, 0xfe, 0x8d, 0x92, 0x9e, 0xd2, 0xfc, 0xea, 0xcc, 0x22,
+	0x8b, 0x56, 0x8a, 0xf5, 0xef, 0xfd, 0x68, 0x45, 0xf3, 0xab, 0x13, 0x8e, 0xb4, 0x0c, 0xa8, 0xcd,
+	0xff, 0x8f, 0xac, 0x0c, 0xc8, 0xcd, 0xaf, 0x0c, 0x03, 0xd2, 0x42, 0xd5, 0x9a, 0xff, 0x9f, 0x59,
+	0xa1, 0x2a, 0xcd, 0xaf, 0x8e, 0x0e, 0xd2, 0x68, 0xb5, 0xe6, 0xff, 0x57, 0x16, 0xad, 0xd2, 0xfc,
+	0xea, 0xb3, 0x68, 0x5a, 0x06, 0xd4, 0xe6, 0xff, 0x77, 0x56, 0x06, 0xe4, 0xe6, 0x57, 0x06, 0x0e,
+	0x9c, 0xf3, 0xa1, 0x34, 0xd7, 0xe5, 0xef, 0x70, 0xd0, 0x77, 0x73, 0x6c, 0x4e, 0x96, 0xd8, 0x3b,
+	0x43, 0xc4, 0x33, 0x5f, 0x6e, 0x81, 0x8f, 0x80, 0x18, 0x1a, 0xd6, 0xc4, 0xcb, 0x1a, 0xf4, 0xbd,
+	0x5c, 0xc6, 0xf9, 0xf1, 0x94, 0x43, 0x5c, 0xe1, 0x5f, 0x98, 0xe0, 0x47, 0xc1, 0x8c, 0x34, 0xc4,
+	0xe6, 0x2f, 0x8e, 0xd0, 0xf7, 0xb3, 0xc8, 0xaa, 0x18, 0xf3, 0xd8, 0x8b, 0x5e, 0xc6, 0x64, 0xc2,
+	0x04, 0xb7, 0xd4, 0xb9, 0x70, 0xaf, 0xde, 0x45, 0x3f, 0xa0, 0x44, 0x0b, 0x69, 0x45, 0xe8, 0xd5,
+	0xbb, 0xca, 0xc4, 0xb8, 0x57, 0xef, 0xc2, 0x4d, 0x20, 0x66, 0x8b, 0x35, 0xaf, 0x7d, 0x82, 0x7e,
+	0x48, 0xd7, 0xcf, 0x26, 0xd6, 0x6f, 0xb5, 0x4f, 0xdc, 0x3c, 0x87, 0x6e, 0xb5, 0x4f, 0xe0, 0x5d,
+	0x69, 0xd6, 0xfc, 0x0a, 0x97, 0x01, 0xfd, 0x88, 0xae, 0x9d, 0x4f, 0xac, 0xa5, 0x55, 0x12, 0xd3,
+	0x4d, 0xf2, 0x15, 0x97, 0x27, 0x6e, 0x50, 0x5e, 0x9e, 0x1f, 0xe7, 0x48, 0xb5, 0xfb, 0x95, 0x47,
+	0xf4, 0xa5, 0x54, 0x1e, 0x41, 0x14, 0x97, 0xe7, 0x27, 0xb9, 0x0c, 0x85, 0x93, 0xca, 0xc3, 0x97,
+	0xc5, 0xe5, 0x91, 0xb9, 0x48, 0x79, 0x48, 0x75, 0x7e, 0x9a, 0xc5, 0x25, 0x55, 0x27, 0x1e, 0x0a,
+	0xb2, 0x55, 0xb8, 0x3a, 0xf2, 0xad, 0x82, 0xab, 0xf3, 0x4b, 0x4a, 0x94, 0x5d, 0x1d, 0xe9, 0xee,
+	0x60, 0xd5, 0x11, 0x14, 0xb8, 0x3a, 0x3f, 0xa3, 0xeb, 0x33, 0xaa, 0xc3, 0xa1, 0xac, 0x3a, 0x62,
+	0x25, 0xad, 0xce, 0xcf, 0xe9, 0xda, 0xcc, 0xea, 0x70, 0x38, 0xad, 0xce, 0x05, 0x00, 0xc8, 0xfe,
+	0xdb, 0x5e, 0xcb, 0x5f, 0x43, 0x9f, 0x36, 0xc9, 0x6b, 0x28, 0xc9, 0x04, 0x2d, 0x90, 0xa7, 0xfd,
+	0x8b, 0xbf, 0xae, 0xa3, 0xcf, 0xc8, 0x88, 0x5d, 0x6c, 0x82, 0x17, 0x41, 0xa1, 0x16, 0x43, 0x36,
+	0xd0, 0x67, 0x19, 0xa4, 0xca, 0x21, 0x1b, 0x70, 0x09, 0x4c, 0x50, 0x04, 0x81, 0xd8, 0x35, 0xf4,
+	0x39, 0x9d, 0x86, 0xfc, 0x3d, 0x49, 0xbe, 0xad, 0x62, 0xc8, 0x4d, 0xf4, 0x79, 0x8a, 0x90, 0x6d,
+	0x70, 0x99, 0xd3, 0xac, 0x12, 0x1e, 0x07, 0x7d, 0x41, 0x01, 0x61, 0x1e, 0x47, 0xec, 0x08, 0x7f,
+	0xbb, 0x85, 0xbe, 0xa8, 0x3b, 0xba, 0x85, 0x01, 0x22, 0xb4, 0x4d, 0xf4, 0x25, 0x3d, 0xda, 0xcd,
+	0x78, 0xcb, 0xf8, 0xeb, 0x6d, 0xf4, 0x65, 0x9d, 0xe2, 0x36, 0x5c, 0x02, 0x85, 0xaa, 0x40, 0xac,
+	0xad, 0xa2, 0xaf, 0xb0, 0x38, 0x04, 0xc9, 0xda, 0x2a, 0xc1, 0xec, 0x54, 0xde, 0x7d, 0x50, 0xdb,
+	0xdd, 0x7a, 0x5c, 0x59, 0x5b, 0x43, 0x5f, 0xe5, 0x18, 0x6c, 0xa4, 0xb6, 0x18, 0x43, 0x72, 0xbd,
+	0x8e, 0xbe, 0xa6, 0x60, 0x88, 0x0d, 0x5e, 0x02, 0x93, 0x35, 0x29, 0xbf, 0x6b, 0x1b, 0xe8, 0xeb,
+	0x09, 0x6f, 0x1b, 0x14, 0x55, 0x8d, 0x51, 0x36, 0xfa, 0x46, 0x02, 0x65, 0xc7, 0x09, 0xa4, 0xa0,
+	0x9b, 0xe8, 0x9b, 0x72, 0x02, 0x09, 0x48, 0xca, 0x32, 0xdd, 0x9d, 0x83, 0xbe, 0x95, 0x00, 0x39,
+	0xd8, 0x9f, 0x14, 0xd3, 0xad, 0x5a, 0x0d, 0x7d, 0x3b, 0x81, 0xba, 0x85, 0x51, 0x52, 0x4c, 0x9b,
+	0xb5, 0x1a, 0xfa, 0x4e, 0x22, 0xaa, 0xcd, 0xc5, 0xe7, 0x60, 0x42, 0x7d, 0xd0, 0x29, 0x00, 0xc3,
+	0x63, 0x6f, 0x44, 0x0d, 0x0f, 0xbe, 0x0d, 0xf2, 0xf5, 0x40, 0xbc, 0xd4, 0x40, 0xb9, 0xd3, 0x5e,
+	0x80, 0xc8, 0xe8, 0xc5, 0x7b, 0x00, 0x26, 0x87, 0x94, 0xb0, 0x08, 0xcc, 0x97, 0xfe, 0x09, 0x73,
+	0x81, 0x7f, 0x85, 0xb3, 0xe0, 0x0c, 0xbd, 0x7d, 0x72, 0xc4, 0x46, 0xbf, 0xdc, 0xc9, 0x6d, 0x1a,
+	0x31, 0x83, 0x3c, 0x90, 0x94, 0x19, 0xcc, 0x14, 0x06, 0x53, 0x66, 0x28, 0x83, 0xd9, 0xb4, 0xd1,
+	0xa3, 0xcc, 0x31, 0x91, 0xc2, 0x31, 0x91, 0xce, 0xa1, 0x8c, 0x18, 0x65, 0x8e, 0xe1, 0x14, 0x8e,
+	0xe1, 0x24, 0x47, 0x62, 0x94, 0x28, 0x73, 0x4c, 0xa7, 0x70, 0x4c, 0xa7, 0x73, 0x28, 0x23, 0x43,
+	0x99, 0x03, 0xa6, 0x70, 0x40, 0x99, 0xe3, 0x01, 0x98, 0x4f, 0x1f, 0x0c, 0xca, 0x2c, 0xa3, 0x29,
+	0x2c, 0xa3, 0x19, 0x2c, 0xea, 0xf0, 0x4f, 0x66, 0x19, 0x49, 0x61, 0x19, 0x91, 0x59, 0xaa, 0x00,
+	0x65, 0x8d, 0xf7, 0x64, 0x9e, 0xa9, 0x14, 0x9e, 0xa9, 0x2c, 0x1e, 0x6d, 0x7c, 0x27, 0xf3, 0x14,
+	0x53, 0x78, 0x8a, 0xa9, 0xdd, 0x26, 0x0f, 0xe9, 0x4e, 0xeb, 0xd7, 0x9c, 0xcc, 0xb0, 0x05, 0x66,
+	0x52, 0xe6, 0x71, 0xa7, 0x51, 0x18, 0x32, 0xc5, 0x5d, 0x50, 0xd4, 0x87, 0x6f, 0xf2, 0xfa, 0xb1,
+	0x94, 0xf5, 0x63, 0x29, 0x4d, 0xa2, 0x0f, 0xda, 0x64, 0x8e, 0xf1, 0x14, 0x8e, 0xf1, 0xe4, 0x36,
+	0xf4, 0x89, 0xda, 0x69, 0x14, 0x05, 0x99, 0x22, 0x04, 0xe7, 0xfa, 0x8c, 0xcc, 0x52, 0xa8, 0xde,
+	0x91, 0xa9, 0x5e, 0xe3, 0x7d, 0x95, 0xe4, 0xf3, 0x18, 0x9c, 0xef, 0x37, 0x33, 0x4b, 0x71, 0xba,
+	0xa6, 0x3a, 0xed, 0xfb, 0x0a, 0x4b, 0x72, 0xd4, 0xa4, 0x0d, 0x97, 0x36, 0x2b, 0x4b, 0x71, 0x72,
+	0x47, 0x76, 0x32, 0xe8, 0x4b, 0x2d, 0xc9, 0x9b, 0x07, 0xce, 0x66, 0xce, 0xcb, 0x52, 0xdc, 0xad,
+	0xa8, 0xee, 0xb2, 0x5f, 0x75, 0xc5, 0x2e, 0x96, 0x6e, 0x03, 0x20, 0x4d, 0xf6, 0x46, 0x81, 0x59,
+	0xdd, 0xdb, 0x2b, 0x0e, 0xe1, 0x5f, 0xca, 0x5b, 0x6e, 0xd1, 0xa0, 0xbf, 0x3c, 0x2f, 0xe6, 0xb0,
+	0xbb, 0xdd, 0xca, 0xc3, 0xe2, 0x7f, 0xf9, 0x7f, 0x46, 0x79, 0x42, 0x8c, 0xa2, 0xf0, 0xa9, 0xb2,
+	0xf4, 0x06, 0x98, 0xd4, 0x06, 0x92, 0x05, 0x60, 0xd4, 0xf9, 0x81, 0x52, 0xbf, 0x76, 0x13, 0x80,
+	0xf8, 0xdf, 0x30, 0xc1, 0x29, 0x90, 0x3f, 0xd8, 0xdd, 0x7f, 0x52, 0xb9, 0xbf, 0x53, 0xdd, 0xa9,
+	0x3c, 0x28, 0x0e, 0xc1, 0x02, 0x18, 0x7b, 0xe2, 0xee, 0x3d, 0xdd, 0x2b, 0x1f, 0x54, 0x8b, 0x06,
+	0x1c, 0x03, 0xc3, 0x8f, 0xf6, 0xf7, 0x76, 0x8b, 0xb9, 0x6b, 0xf7, 0x40, 0x5e, 0x9e, 0x07, 0x4e,
+	0x81, 0x7c, 0x75, 0xcf, 0xad, 0xec, 0x3c, 0xdc, 0xad, 0xd1, 0x48, 0x25, 0x03, 0x8d, 0x58, 0x31,
+	0x3c, 0x2f, 0xe6, 0xca, 0x17, 0xc1, 0x85, 0x7a, 0xd0, 0x4a, 0xfc, 0x61, 0x26, 0x25, 0xe7, 0xc5,
+	0x08, 0xb1, 0x6e, 0xfc, 0x2f, 0x00, 0x00, 0xff, 0xff, 0x33, 0xc2, 0x0c, 0xb6, 0xeb, 0x26, 0x00,
+	0x00,
+}
diff --git a/vendor/github.com/golang/protobuf/_conformance/conformance_proto/conformance.proto b/vendor/github.com/golang/protobuf/_conformance/conformance_proto/conformance.proto
new file mode 100644
index 000000000..95a8fd135
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/_conformance/conformance_proto/conformance.proto
@@ -0,0 +1,285 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto3";
+package conformance;
+option java_package = "com.google.protobuf.conformance";
+
+import "google/protobuf/any.proto";
+import "google/protobuf/duration.proto";
+import "google/protobuf/field_mask.proto";
+import "google/protobuf/struct.proto";
+import "google/protobuf/timestamp.proto";
+import "google/protobuf/wrappers.proto";
+
+// This defines the conformance testing protocol.  This protocol exists between
+// the conformance test suite itself and the code being tested.  For each test,
+// the suite will send a ConformanceRequest message and expect a
+// ConformanceResponse message.
+//
+// You can either run the tests in two different ways:
+//
+//   1. in-process (using the interface in conformance_test.h).
+//
+//   2. as a sub-process communicating over a pipe.  Information about how to
+//      do this is in conformance_test_runner.cc.
+//
+// Pros/cons of the two approaches:
+//
+//   - running as a sub-process is much simpler for languages other than C/C++.
+//
+//   - running as a sub-process may be more tricky in unusual environments like
+//     iOS apps, where fork/stdin/stdout are not available.
+
+enum WireFormat {
+  UNSPECIFIED = 0;
+  PROTOBUF = 1;
+  JSON = 2;
+}
+
+// Represents a single test case's input.  The testee should:
+//
+//   1. parse this proto (which should always succeed)
+//   2. parse the protobuf or JSON payload in "payload" (which may fail)
+//   3. if the parse succeeded, serialize the message in the requested format.
+message ConformanceRequest {
+  // The payload (whether protobuf of JSON) is always for a TestAllTypes proto
+  // (see below).
+  oneof payload {
+    bytes protobuf_payload = 1;
+    string json_payload = 2;
+  }
+
+  // Which format should the testee serialize its message to?
+  WireFormat requested_output_format = 3;
+}
+
+// Represents a single test case's output.
+message ConformanceResponse {
+  oneof result {
+    // This string should be set to indicate parsing failed.  The string can
+    // provide more information about the parse error if it is available.
+    //
+    // Setting this string does not necessarily mean the testee failed the
+    // test.  Some of the test cases are intentionally invalid input.
+    string parse_error = 1;
+
+    // If the input was successfully parsed but errors occurred when
+    // serializing it to the requested output format, set the error message in
+    // this field.
+    string serialize_error = 6;
+
+    // This should be set if some other error occurred.  This will always
+    // indicate that the test failed.  The string can provide more information
+    // about the failure.
+    string runtime_error = 2;
+
+    // If the input was successfully parsed and the requested output was
+    // protobuf, serialize it to protobuf and set it in this field.
+    bytes protobuf_payload = 3;
+
+    // If the input was successfully parsed and the requested output was JSON,
+    // serialize to JSON and set it in this field.
+    string json_payload = 4;
+
+    // For when the testee skipped the test, likely because a certain feature
+    // wasn't supported, like JSON input/output.
+    string skipped = 5;
+  }
+}
+
+// This proto includes every type of field in both singular and repeated
+// forms.
+message TestAllTypes {
+  message NestedMessage {
+    int32 a = 1;
+    TestAllTypes corecursive = 2;
+  }
+
+  enum NestedEnum {
+    FOO = 0;
+    BAR = 1;
+    BAZ = 2;
+    NEG = -1;  // Intentionally negative.
+  }
+
+  // Singular
+  int32 optional_int32    =  1;
+  int64 optional_int64    =  2;
+  uint32 optional_uint32   =  3;
+  uint64 optional_uint64   =  4;
+  sint32 optional_sint32   =  5;
+  sint64 optional_sint64   =  6;
+  fixed32 optional_fixed32  =  7;
+  fixed64 optional_fixed64  =  8;
+  sfixed32 optional_sfixed32 =  9;
+  sfixed64 optional_sfixed64 = 10;
+  float optional_float    = 11;
+  double optional_double   = 12;
+  bool optional_bool     = 13;
+  string optional_string   = 14;
+  bytes optional_bytes    = 15;
+
+  NestedMessage                        optional_nested_message  = 18;
+  ForeignMessage                       optional_foreign_message = 19;
+
+  NestedEnum                           optional_nested_enum     = 21;
+  ForeignEnum                          optional_foreign_enum    = 22;
+
+  string optional_string_piece = 24 [ctype=STRING_PIECE];
+  string optional_cord = 25 [ctype=CORD];
+
+  TestAllTypes recursive_message = 27;
+
+  // Repeated
+  repeated    int32 repeated_int32    = 31;
+  repeated    int64 repeated_int64    = 32;
+  repeated   uint32 repeated_uint32   = 33;
+  repeated   uint64 repeated_uint64   = 34;
+  repeated   sint32 repeated_sint32   = 35;
+  repeated   sint64 repeated_sint64   = 36;
+  repeated  fixed32 repeated_fixed32  = 37;
+  repeated  fixed64 repeated_fixed64  = 38;
+  repeated sfixed32 repeated_sfixed32 = 39;
+  repeated sfixed64 repeated_sfixed64 = 40;
+  repeated    float repeated_float    = 41;
+  repeated   double repeated_double   = 42;
+  repeated     bool repeated_bool     = 43;
+  repeated   string repeated_string   = 44;
+  repeated    bytes repeated_bytes    = 45;
+
+  repeated NestedMessage                        repeated_nested_message  = 48;
+  repeated ForeignMessage                       repeated_foreign_message = 49;
+
+  repeated NestedEnum                           repeated_nested_enum     = 51;
+  repeated ForeignEnum                          repeated_foreign_enum    = 52;
+
+  repeated string repeated_string_piece = 54 [ctype=STRING_PIECE];
+  repeated string repeated_cord = 55 [ctype=CORD];
+
+  // Map
+  map <   int32, int32>    map_int32_int32 = 56;
+  map <   int64, int64>    map_int64_int64 = 57;
+  map <  uint32, uint32>   map_uint32_uint32 = 58;
+  map <  uint64, uint64>   map_uint64_uint64 = 59;
+  map <  sint32, sint32>   map_sint32_sint32 = 60;
+  map <  sint64, sint64>   map_sint64_sint64 = 61;
+  map < fixed32, fixed32>  map_fixed32_fixed32 = 62;
+  map < fixed64, fixed64>  map_fixed64_fixed64 = 63;
+  map <sfixed32, sfixed32> map_sfixed32_sfixed32 = 64;
+  map <sfixed64, sfixed64> map_sfixed64_sfixed64 = 65;
+  map <   int32, float>    map_int32_float = 66;
+  map <   int32, double>   map_int32_double = 67;
+  map <    bool, bool>     map_bool_bool = 68;
+  map <  string, string>   map_string_string = 69;
+  map <  string, bytes>    map_string_bytes = 70;
+  map <  string, NestedMessage>  map_string_nested_message = 71;
+  map <  string, ForeignMessage> map_string_foreign_message = 72;
+  map <  string, NestedEnum>     map_string_nested_enum = 73;
+  map <  string, ForeignEnum>    map_string_foreign_enum = 74;
+
+  oneof oneof_field {
+    uint32 oneof_uint32 = 111;
+    NestedMessage oneof_nested_message = 112;
+    string oneof_string = 113;
+    bytes oneof_bytes = 114;
+    bool oneof_bool = 115;
+    uint64 oneof_uint64 = 116;
+    float oneof_float = 117;
+    double oneof_double = 118;
+    NestedEnum oneof_enum = 119;
+  }
+
+  // Well-known types
+  google.protobuf.BoolValue optional_bool_wrapper = 201;
+  google.protobuf.Int32Value optional_int32_wrapper = 202;
+  google.protobuf.Int64Value optional_int64_wrapper = 203;
+  google.protobuf.UInt32Value optional_uint32_wrapper = 204;
+  google.protobuf.UInt64Value optional_uint64_wrapper = 205;
+  google.protobuf.FloatValue optional_float_wrapper = 206;
+  google.protobuf.DoubleValue optional_double_wrapper = 207;
+  google.protobuf.StringValue optional_string_wrapper = 208;
+  google.protobuf.BytesValue optional_bytes_wrapper = 209;
+
+  repeated google.protobuf.BoolValue repeated_bool_wrapper = 211;
+  repeated google.protobuf.Int32Value repeated_int32_wrapper = 212;
+  repeated google.protobuf.Int64Value repeated_int64_wrapper = 213;
+  repeated google.protobuf.UInt32Value repeated_uint32_wrapper = 214;
+  repeated google.protobuf.UInt64Value repeated_uint64_wrapper = 215;
+  repeated google.protobuf.FloatValue repeated_float_wrapper = 216;
+  repeated google.protobuf.DoubleValue repeated_double_wrapper = 217;
+  repeated google.protobuf.StringValue repeated_string_wrapper = 218;
+  repeated google.protobuf.BytesValue repeated_bytes_wrapper = 219;
+
+  google.protobuf.Duration optional_duration = 301;
+  google.protobuf.Timestamp optional_timestamp = 302;
+  google.protobuf.FieldMask optional_field_mask = 303;
+  google.protobuf.Struct optional_struct = 304;
+  google.protobuf.Any optional_any = 305;
+  google.protobuf.Value optional_value = 306;
+
+  repeated google.protobuf.Duration repeated_duration = 311;
+  repeated google.protobuf.Timestamp repeated_timestamp = 312;
+  repeated google.protobuf.FieldMask repeated_fieldmask = 313;
+  repeated google.protobuf.Struct repeated_struct = 324;
+  repeated google.protobuf.Any repeated_any = 315;
+  repeated google.protobuf.Value repeated_value = 316;
+
+  // Test field-name-to-JSON-name convention.
+  // (protobuf says names can be any valid C/C++ identifier.)
+  int32 fieldname1 = 401;
+  int32 field_name2 = 402;
+  int32 _field_name3 = 403;
+  int32 field__name4_ = 404;
+  int32 field0name5 = 405;
+  int32 field_0_name6 = 406;
+  int32 fieldName7 = 407;
+  int32 FieldName8 = 408;
+  int32 field_Name9 = 409;
+  int32 Field_Name10 = 410;
+  int32 FIELD_NAME11 = 411;
+  int32 FIELD_name12 = 412;
+  int32 __field_name13 = 413;
+  int32 __Field_name14 = 414;
+  int32 field__name15 = 415;
+  int32 field__Name16 = 416;
+  int32 field_name17__ = 417;
+  int32 Field_name18__ = 418;
+}
+
+message ForeignMessage {
+  int32 c = 1;
+}
+
+enum ForeignEnum {
+  FOREIGN_FOO = 0;
+  FOREIGN_BAR = 1;
+  FOREIGN_BAZ = 2;
+}
diff --git a/vendor/github.com/golang/protobuf/descriptor/descriptor.go b/vendor/github.com/golang/protobuf/descriptor/descriptor.go
new file mode 100644
index 000000000..83607ff6c
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/descriptor/descriptor.go
@@ -0,0 +1,93 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2016 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Package descriptor provides functions for obtaining protocol buffer
+// descriptors for generated Go types.
+//
+// These functions cannot go in package proto because they depend on the
+// generated protobuf descriptor messages, which themselves depend on proto.
+package descriptor
+
+import (
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"io/ioutil"
+
+	"github.com/golang/protobuf/proto"
+	protobuf "google.golang.org/genproto/protobuf"
+)
+
+// extractFile extracts a FileDescriptorProto from a gzip'd buffer.
+func extractFile(gz []byte) (*protobuf.FileDescriptorProto, error) {
+	r, err := gzip.NewReader(bytes.NewReader(gz))
+	if err != nil {
+		return nil, fmt.Errorf("failed to open gzip reader: %v", err)
+	}
+	defer r.Close()
+
+	b, err := ioutil.ReadAll(r)
+	if err != nil {
+		return nil, fmt.Errorf("failed to uncompress descriptor: %v", err)
+	}
+
+	fd := new(protobuf.FileDescriptorProto)
+	if err := proto.Unmarshal(b, fd); err != nil {
+		return nil, fmt.Errorf("malformed FileDescriptorProto: %v", err)
+	}
+
+	return fd, nil
+}
+
+// Message is a proto.Message with a method to return its descriptor.
+//
+// Message types generated by the protocol compiler always satisfy
+// the Message interface.
+type Message interface {
+	proto.Message
+	Descriptor() ([]byte, []int)
+}
+
+// ForMessage returns a FileDescriptorProto and a DescriptorProto from within it
+// describing the given message.
+func ForMessage(msg Message) (fd *protobuf.FileDescriptorProto, md *protobuf.DescriptorProto) {
+	gz, path := msg.Descriptor()
+	fd, err := extractFile(gz)
+	if err != nil {
+		panic(fmt.Sprintf("invalid FileDescriptorProto for %T: %v", msg, err))
+	}
+
+	md = fd.MessageType[path[0]]
+	for _, i := range path[1:] {
+		md = md.NestedType[i]
+	}
+	return fd, md
+}
diff --git a/vendor/github.com/golang/protobuf/descriptor/descriptor_test.go b/vendor/github.com/golang/protobuf/descriptor/descriptor_test.go
new file mode 100644
index 000000000..282a1e3a7
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/descriptor/descriptor_test.go
@@ -0,0 +1,32 @@
+package descriptor_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/golang/protobuf/descriptor"
+	tpb "github.com/golang/protobuf/proto/testdata"
+	protobuf "google.golang.org/genproto/protobuf"
+)
+
+func TestMessage(t *testing.T) {
+	var msg *protobuf.DescriptorProto
+	fd, md := descriptor.ForMessage(msg)
+	if pkg, want := fd.GetPackage(), "google.protobuf"; pkg != want {
+		t.Errorf("descriptor.ForMessage(%T).GetPackage() = %q; want %q", msg, pkg, want)
+	}
+	if name, want := md.GetName(), "DescriptorProto"; name != want {
+		t.Fatalf("descriptor.ForMessage(%T).GetName() = %q; want %q", msg, name, want)
+	}
+}
+
+func Example_Options() {
+	var msg *tpb.MyMessageSet
+	_, md := descriptor.ForMessage(msg)
+	if md.GetOptions().GetMessageSetWireFormat() {
+		fmt.Printf("%v uses option message_set_wire_format.\n", md.GetName())
+	}
+
+	// Output:
+	// MyMessageSet uses option message_set_wire_format.
+}
diff --git a/vendor/github.com/golang/protobuf/jsonpb/jsonpb.go b/vendor/github.com/golang/protobuf/jsonpb/jsonpb.go
new file mode 100644
index 000000000..82c61624e
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/jsonpb/jsonpb.go
@@ -0,0 +1,843 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2015 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/*
+Package jsonpb provides marshaling and unmarshaling between protocol buffers and JSON.
+It follows the specification at https://developers.google.com/protocol-buffers/docs/proto3#json.
+
+This package produces a different output than the standard "encoding/json" package,
+which does not operate correctly on protocol buffers.
+*/
+package jsonpb
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"reflect"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/golang/protobuf/proto"
+)
+
+// Marshaler is a configurable object for converting between
+// protocol buffer objects and a JSON representation for them.
+type Marshaler struct {
+	// Whether to render enum values as integers, as opposed to string values.
+	EnumsAsInts bool
+
+	// Whether to render fields with zero values.
+	EmitDefaults bool
+
+	// A string to indent each level by. The presence of this field will
+	// also cause a space to appear between the field separator and
+	// value, and for newlines to be appear between fields and array
+	// elements.
+	Indent string
+
+	// Whether to use the original (.proto) name for fields.
+	OrigName bool
+}
+
+// Marshal marshals a protocol buffer into JSON.
+func (m *Marshaler) Marshal(out io.Writer, pb proto.Message) error {
+	writer := &errWriter{writer: out}
+	return m.marshalObject(writer, pb, "", "")
+}
+
+// MarshalToString converts a protocol buffer object to JSON string.
+func (m *Marshaler) MarshalToString(pb proto.Message) (string, error) {
+	var buf bytes.Buffer
+	if err := m.Marshal(&buf, pb); err != nil {
+		return "", err
+	}
+	return buf.String(), nil
+}
+
+type int32Slice []int32
+
+// For sorting extensions ids to ensure stable output.
+func (s int32Slice) Len() int           { return len(s) }
+func (s int32Slice) Less(i, j int) bool { return s[i] < s[j] }
+func (s int32Slice) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
+
+type wkt interface {
+	XXX_WellKnownType() string
+}
+
+// marshalObject writes a struct to the Writer.
+func (m *Marshaler) marshalObject(out *errWriter, v proto.Message, indent, typeURL string) error {
+	s := reflect.ValueOf(v).Elem()
+
+	// Handle well-known types.
+	if wkt, ok := v.(wkt); ok {
+		switch wkt.XXX_WellKnownType() {
+		case "DoubleValue", "FloatValue", "Int64Value", "UInt64Value",
+			"Int32Value", "UInt32Value", "BoolValue", "StringValue", "BytesValue":
+			// "Wrappers use the same representation in JSON
+			//  as the wrapped primitive type, ..."
+			sprop := proto.GetProperties(s.Type())
+			return m.marshalValue(out, sprop.Prop[0], s.Field(0), indent)
+		case "Any":
+			// Any is a bit more involved.
+			return m.marshalAny(out, v, indent)
+		case "Duration":
+			// "Generated output always contains 3, 6, or 9 fractional digits,
+			//  depending on required precision."
+			s, ns := s.Field(0).Int(), s.Field(1).Int()
+			d := time.Duration(s)*time.Second + time.Duration(ns)*time.Nanosecond
+			x := fmt.Sprintf("%.9f", d.Seconds())
+			x = strings.TrimSuffix(x, "000")
+			x = strings.TrimSuffix(x, "000")
+			out.write(`"`)
+			out.write(x)
+			out.write(`s"`)
+			return out.err
+		case "Struct":
+			// Let marshalValue handle the `fields` map.
+			// TODO: pass the correct Properties if needed.
+			return m.marshalValue(out, &proto.Properties{}, s.Field(0), indent)
+		case "Timestamp":
+			// "RFC 3339, where generated output will always be Z-normalized
+			//  and uses 3, 6 or 9 fractional digits."
+			s, ns := s.Field(0).Int(), s.Field(1).Int()
+			t := time.Unix(s, ns).UTC()
+			// time.RFC3339Nano isn't exactly right (we need to get 3/6/9 fractional digits).
+			x := t.Format("2006-01-02T15:04:05.000000000")
+			x = strings.TrimSuffix(x, "000")
+			x = strings.TrimSuffix(x, "000")
+			out.write(`"`)
+			out.write(x)
+			out.write(`Z"`)
+			return out.err
+		case "Value":
+			// Value has a single oneof.
+			kind := s.Field(0)
+			if kind.IsNil() {
+				// "absence of any variant indicates an error"
+				return errors.New("nil Value")
+			}
+			// oneof -> *T -> T -> T.F
+			x := kind.Elem().Elem().Field(0)
+			// TODO: pass the correct Properties if needed.
+			return m.marshalValue(out, &proto.Properties{}, x, indent)
+		}
+	}
+
+	out.write("{")
+	if m.Indent != "" {
+		out.write("\n")
+	}
+
+	firstField := true
+
+	if typeURL != "" {
+		if err := m.marshalTypeURL(out, indent, typeURL); err != nil {
+			return err
+		}
+		firstField = false
+	}
+
+	for i := 0; i < s.NumField(); i++ {
+		value := s.Field(i)
+		valueField := s.Type().Field(i)
+		if strings.HasPrefix(valueField.Name, "XXX_") {
+			continue
+		}
+
+		// IsNil will panic on most value kinds.
+		switch value.Kind() {
+		case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
+			if value.IsNil() {
+				continue
+			}
+		}
+
+		if !m.EmitDefaults {
+			switch value.Kind() {
+			case reflect.Bool:
+				if !value.Bool() {
+					continue
+				}
+			case reflect.Int32, reflect.Int64:
+				if value.Int() == 0 {
+					continue
+				}
+			case reflect.Uint32, reflect.Uint64:
+				if value.Uint() == 0 {
+					continue
+				}
+			case reflect.Float32, reflect.Float64:
+				if value.Float() == 0 {
+					continue
+				}
+			case reflect.String:
+				if value.Len() == 0 {
+					continue
+				}
+			}
+		}
+
+		// Oneof fields need special handling.
+		if valueField.Tag.Get("protobuf_oneof") != "" {
+			// value is an interface containing &T{real_value}.
+			sv := value.Elem().Elem() // interface -> *T -> T
+			value = sv.Field(0)
+			valueField = sv.Type().Field(0)
+		}
+		prop := jsonProperties(valueField, m.OrigName)
+		if !firstField {
+			m.writeSep(out)
+		}
+		if err := m.marshalField(out, prop, value, indent); err != nil {
+			return err
+		}
+		firstField = false
+	}
+
+	// Handle proto2 extensions.
+	if ep, ok := v.(proto.Message); ok {
+		extensions := proto.RegisteredExtensions(v)
+		// Sort extensions for stable output.
+		ids := make([]int32, 0, len(extensions))
+		for id, desc := range extensions {
+			if !proto.HasExtension(ep, desc) {
+				continue
+			}
+			ids = append(ids, id)
+		}
+		sort.Sort(int32Slice(ids))
+		for _, id := range ids {
+			desc := extensions[id]
+			if desc == nil {
+				// unknown extension
+				continue
+			}
+			ext, extErr := proto.GetExtension(ep, desc)
+			if extErr != nil {
+				return extErr
+			}
+			value := reflect.ValueOf(ext)
+			var prop proto.Properties
+			prop.Parse(desc.Tag)
+			prop.JSONName = fmt.Sprintf("[%s]", desc.Name)
+			if !firstField {
+				m.writeSep(out)
+			}
+			if err := m.marshalField(out, &prop, value, indent); err != nil {
+				return err
+			}
+			firstField = false
+		}
+
+	}
+
+	if m.Indent != "" {
+		out.write("\n")
+		out.write(indent)
+	}
+	out.write("}")
+	return out.err
+}
+
+func (m *Marshaler) writeSep(out *errWriter) {
+	if m.Indent != "" {
+		out.write(",\n")
+	} else {
+		out.write(",")
+	}
+}
+
+func (m *Marshaler) marshalAny(out *errWriter, any proto.Message, indent string) error {
+	// "If the Any contains a value that has a special JSON mapping,
+	//  it will be converted as follows: {"@type": xxx, "value": yyy}.
+	//  Otherwise, the value will be converted into a JSON object,
+	//  and the "@type" field will be inserted to indicate the actual data type."
+	v := reflect.ValueOf(any).Elem()
+	turl := v.Field(0).String()
+	val := v.Field(1).Bytes()
+
+	// Only the part of type_url after the last slash is relevant.
+	mname := turl
+	if slash := strings.LastIndex(mname, "/"); slash >= 0 {
+		mname = mname[slash+1:]
+	}
+	mt := proto.MessageType(mname)
+	if mt == nil {
+		return fmt.Errorf("unknown message type %q", mname)
+	}
+	msg := reflect.New(mt.Elem()).Interface().(proto.Message)
+	if err := proto.Unmarshal(val, msg); err != nil {
+		return err
+	}
+
+	if _, ok := msg.(wkt); ok {
+		out.write("{")
+		if m.Indent != "" {
+			out.write("\n")
+		}
+		if err := m.marshalTypeURL(out, indent, turl); err != nil {
+			return err
+		}
+		m.writeSep(out)
+		if m.Indent != "" {
+			out.write(indent)
+			out.write(m.Indent)
+			out.write(`"value": `)
+		} else {
+			out.write(`"value":`)
+		}
+		if err := m.marshalObject(out, msg, indent+m.Indent, ""); err != nil {
+			return err
+		}
+		if m.Indent != "" {
+			out.write("\n")
+			out.write(indent)
+		}
+		out.write("}")
+		return out.err
+	}
+
+	return m.marshalObject(out, msg, indent, turl)
+}
+
+func (m *Marshaler) marshalTypeURL(out *errWriter, indent, typeURL string) error {
+	if m.Indent != "" {
+		out.write(indent)
+		out.write(m.Indent)
+	}
+	out.write(`"@type":`)
+	if m.Indent != "" {
+		out.write(" ")
+	}
+	b, err := json.Marshal(typeURL)
+	if err != nil {
+		return err
+	}
+	out.write(string(b))
+	return out.err
+}
+
+// marshalField writes field description and value to the Writer.
+func (m *Marshaler) marshalField(out *errWriter, prop *proto.Properties, v reflect.Value, indent string) error {
+	if m.Indent != "" {
+		out.write(indent)
+		out.write(m.Indent)
+	}
+	out.write(`"`)
+	out.write(prop.JSONName)
+	out.write(`":`)
+	if m.Indent != "" {
+		out.write(" ")
+	}
+	if err := m.marshalValue(out, prop, v, indent); err != nil {
+		return err
+	}
+	return nil
+}
+
+// marshalValue writes the value to the Writer.
+func (m *Marshaler) marshalValue(out *errWriter, prop *proto.Properties, v reflect.Value, indent string) error {
+
+	var err error
+	v = reflect.Indirect(v)
+
+	// Handle repeated elements.
+	if v.Kind() == reflect.Slice && v.Type().Elem().Kind() != reflect.Uint8 {
+		out.write("[")
+		comma := ""
+		for i := 0; i < v.Len(); i++ {
+			sliceVal := v.Index(i)
+			out.write(comma)
+			if m.Indent != "" {
+				out.write("\n")
+				out.write(indent)
+				out.write(m.Indent)
+				out.write(m.Indent)
+			}
+			if err := m.marshalValue(out, prop, sliceVal, indent+m.Indent); err != nil {
+				return err
+			}
+			comma = ","
+		}
+		if m.Indent != "" {
+			out.write("\n")
+			out.write(indent)
+			out.write(m.Indent)
+		}
+		out.write("]")
+		return out.err
+	}
+
+	// Handle well-known types.
+	// Most are handled up in marshalObject (because 99% are messages).
+	type wkt interface {
+		XXX_WellKnownType() string
+	}
+	if wkt, ok := v.Interface().(wkt); ok {
+		switch wkt.XXX_WellKnownType() {
+		case "NullValue":
+			out.write("null")
+			return out.err
+		}
+	}
+
+	// Handle enumerations.
+	if !m.EnumsAsInts && prop.Enum != "" {
+		// Unknown enum values will are stringified by the proto library as their
+		// value. Such values should _not_ be quoted or they will be interpreted
+		// as an enum string instead of their value.
+		enumStr := v.Interface().(fmt.Stringer).String()
+		var valStr string
+		if v.Kind() == reflect.Ptr {
+			valStr = strconv.Itoa(int(v.Elem().Int()))
+		} else {
+			valStr = strconv.Itoa(int(v.Int()))
+		}
+		isKnownEnum := enumStr != valStr
+		if isKnownEnum {
+			out.write(`"`)
+		}
+		out.write(enumStr)
+		if isKnownEnum {
+			out.write(`"`)
+		}
+		return out.err
+	}
+
+	// Handle nested messages.
+	if v.Kind() == reflect.Struct {
+		return m.marshalObject(out, v.Addr().Interface().(proto.Message), indent+m.Indent, "")
+	}
+
+	// Handle maps.
+	// Since Go randomizes map iteration, we sort keys for stable output.
+	if v.Kind() == reflect.Map {
+		out.write(`{`)
+		keys := v.MapKeys()
+		sort.Sort(mapKeys(keys))
+		for i, k := range keys {
+			if i > 0 {
+				out.write(`,`)
+			}
+			if m.Indent != "" {
+				out.write("\n")
+				out.write(indent)
+				out.write(m.Indent)
+				out.write(m.Indent)
+			}
+
+			b, err := json.Marshal(k.Interface())
+			if err != nil {
+				return err
+			}
+			s := string(b)
+
+			// If the JSON is not a string value, encode it again to make it one.
+			if !strings.HasPrefix(s, `"`) {
+				b, err := json.Marshal(s)
+				if err != nil {
+					return err
+				}
+				s = string(b)
+			}
+
+			out.write(s)
+			out.write(`:`)
+			if m.Indent != "" {
+				out.write(` `)
+			}
+
+			if err := m.marshalValue(out, prop, v.MapIndex(k), indent+m.Indent); err != nil {
+				return err
+			}
+		}
+		if m.Indent != "" {
+			out.write("\n")
+			out.write(indent)
+			out.write(m.Indent)
+		}
+		out.write(`}`)
+		return out.err
+	}
+
+	// Default handling defers to the encoding/json library.
+	b, err := json.Marshal(v.Interface())
+	if err != nil {
+		return err
+	}
+	needToQuote := string(b[0]) != `"` && (v.Kind() == reflect.Int64 || v.Kind() == reflect.Uint64)
+	if needToQuote {
+		out.write(`"`)
+	}
+	out.write(string(b))
+	if needToQuote {
+		out.write(`"`)
+	}
+	return out.err
+}
+
+// Unmarshaler is a configurable object for converting from a JSON
+// representation to a protocol buffer object.
+type Unmarshaler struct {
+	// Whether to allow messages to contain unknown fields, as opposed to
+	// failing to unmarshal.
+	AllowUnknownFields bool
+}
+
+// UnmarshalNext unmarshals the next protocol buffer from a JSON object stream.
+// This function is lenient and will decode any options permutations of the
+// related Marshaler.
+func (u *Unmarshaler) UnmarshalNext(dec *json.Decoder, pb proto.Message) error {
+	inputValue := json.RawMessage{}
+	if err := dec.Decode(&inputValue); err != nil {
+		return err
+	}
+	return u.unmarshalValue(reflect.ValueOf(pb).Elem(), inputValue, nil)
+}
+
+// Unmarshal unmarshals a JSON object stream into a protocol
+// buffer. This function is lenient and will decode any options
+// permutations of the related Marshaler.
+func (u *Unmarshaler) Unmarshal(r io.Reader, pb proto.Message) error {
+	dec := json.NewDecoder(r)
+	return u.UnmarshalNext(dec, pb)
+}
+
+// UnmarshalNext unmarshals the next protocol buffer from a JSON object stream.
+// This function is lenient and will decode any options permutations of the
+// related Marshaler.
+func UnmarshalNext(dec *json.Decoder, pb proto.Message) error {
+	return new(Unmarshaler).UnmarshalNext(dec, pb)
+}
+
+// Unmarshal unmarshals a JSON object stream into a protocol
+// buffer. This function is lenient and will decode any options
+// permutations of the related Marshaler.
+func Unmarshal(r io.Reader, pb proto.Message) error {
+	return new(Unmarshaler).Unmarshal(r, pb)
+}
+
+// UnmarshalString will populate the fields of a protocol buffer based
+// on a JSON string. This function is lenient and will decode any options
+// permutations of the related Marshaler.
+func UnmarshalString(str string, pb proto.Message) error {
+	return new(Unmarshaler).Unmarshal(strings.NewReader(str), pb)
+}
+
+// unmarshalValue converts/copies a value into the target.
+// prop may be nil.
+func (u *Unmarshaler) unmarshalValue(target reflect.Value, inputValue json.RawMessage, prop *proto.Properties) error {
+	targetType := target.Type()
+
+	// Allocate memory for pointer fields.
+	if targetType.Kind() == reflect.Ptr {
+		target.Set(reflect.New(targetType.Elem()))
+		return u.unmarshalValue(target.Elem(), inputValue, prop)
+	}
+
+	// Handle well-known types.
+	type wkt interface {
+		XXX_WellKnownType() string
+	}
+	if wkt, ok := target.Addr().Interface().(wkt); ok {
+		switch wkt.XXX_WellKnownType() {
+		case "DoubleValue", "FloatValue", "Int64Value", "UInt64Value",
+			"Int32Value", "UInt32Value", "BoolValue", "StringValue", "BytesValue":
+			// "Wrappers use the same representation in JSON
+			//  as the wrapped primitive type, except that null is allowed."
+			// encoding/json will turn JSON `null` into Go `nil`,
+			// so we don't have to do any extra work.
+			return u.unmarshalValue(target.Field(0), inputValue, prop)
+		case "Any":
+			return fmt.Errorf("unmarshaling Any not supported yet")
+		case "Duration":
+			ivStr := string(inputValue)
+			if ivStr == "null" {
+				target.Field(0).SetInt(0)
+				target.Field(1).SetInt(0)
+				return nil
+			}
+
+			unq, err := strconv.Unquote(ivStr)
+			if err != nil {
+				return err
+			}
+			d, err := time.ParseDuration(unq)
+			if err != nil {
+				return fmt.Errorf("bad Duration: %v", err)
+			}
+			ns := d.Nanoseconds()
+			s := ns / 1e9
+			ns %= 1e9
+			target.Field(0).SetInt(s)
+			target.Field(1).SetInt(ns)
+			return nil
+		case "Timestamp":
+			ivStr := string(inputValue)
+			if ivStr == "null" {
+				target.Field(0).SetInt(0)
+				target.Field(1).SetInt(0)
+				return nil
+			}
+
+			unq, err := strconv.Unquote(ivStr)
+			if err != nil {
+				return err
+			}
+			t, err := time.Parse(time.RFC3339Nano, unq)
+			if err != nil {
+				return fmt.Errorf("bad Timestamp: %v", err)
+			}
+			target.Field(0).SetInt(int64(t.Unix()))
+			target.Field(1).SetInt(int64(t.Nanosecond()))
+			return nil
+		}
+	}
+
+	// Handle enums, which have an underlying type of int32,
+	// and may appear as strings.
+	// The case of an enum appearing as a number is handled
+	// at the bottom of this function.
+	if inputValue[0] == '"' && prop != nil && prop.Enum != "" {
+		vmap := proto.EnumValueMap(prop.Enum)
+		// Don't need to do unquoting; valid enum names
+		// are from a limited character set.
+		s := inputValue[1 : len(inputValue)-1]
+		n, ok := vmap[string(s)]
+		if !ok {
+			return fmt.Errorf("unknown value %q for enum %s", s, prop.Enum)
+		}
+		if target.Kind() == reflect.Ptr { // proto2
+			target.Set(reflect.New(targetType.Elem()))
+			target = target.Elem()
+		}
+		target.SetInt(int64(n))
+		return nil
+	}
+
+	// Handle nested messages.
+	if targetType.Kind() == reflect.Struct {
+		var jsonFields map[string]json.RawMessage
+		if err := json.Unmarshal(inputValue, &jsonFields); err != nil {
+			return err
+		}
+
+		consumeField := func(prop *proto.Properties) (json.RawMessage, bool) {
+			// Be liberal in what names we accept; both orig_name and camelName are okay.
+			fieldNames := acceptedJSONFieldNames(prop)
+
+			vOrig, okOrig := jsonFields[fieldNames.orig]
+			vCamel, okCamel := jsonFields[fieldNames.camel]
+			if !okOrig && !okCamel {
+				return nil, false
+			}
+			// If, for some reason, both are present in the data, favour the camelName.
+			var raw json.RawMessage
+			if okOrig {
+				raw = vOrig
+				delete(jsonFields, fieldNames.orig)
+			}
+			if okCamel {
+				raw = vCamel
+				delete(jsonFields, fieldNames.camel)
+			}
+			return raw, true
+		}
+
+		sprops := proto.GetProperties(targetType)
+		for i := 0; i < target.NumField(); i++ {
+			ft := target.Type().Field(i)
+			if strings.HasPrefix(ft.Name, "XXX_") {
+				continue
+			}
+
+			valueForField, ok := consumeField(sprops.Prop[i])
+			if !ok {
+				continue
+			}
+
+			if err := u.unmarshalValue(target.Field(i), valueForField, sprops.Prop[i]); err != nil {
+				return err
+			}
+		}
+		// Check for any oneof fields.
+		if len(jsonFields) > 0 {
+			for _, oop := range sprops.OneofTypes {
+				raw, ok := consumeField(oop.Prop)
+				if !ok {
+					continue
+				}
+				nv := reflect.New(oop.Type.Elem())
+				target.Field(oop.Field).Set(nv)
+				if err := u.unmarshalValue(nv.Elem().Field(0), raw, oop.Prop); err != nil {
+					return err
+				}
+			}
+		}
+		if !u.AllowUnknownFields && len(jsonFields) > 0 {
+			// Pick any field to be the scapegoat.
+			var f string
+			for fname := range jsonFields {
+				f = fname
+				break
+			}
+			return fmt.Errorf("unknown field %q in %v", f, targetType)
+		}
+		return nil
+	}
+
+	// Handle arrays (which aren't encoded bytes)
+	if targetType.Kind() == reflect.Slice && targetType.Elem().Kind() != reflect.Uint8 {
+		var slc []json.RawMessage
+		if err := json.Unmarshal(inputValue, &slc); err != nil {
+			return err
+		}
+		len := len(slc)
+		target.Set(reflect.MakeSlice(targetType, len, len))
+		for i := 0; i < len; i++ {
+			if err := u.unmarshalValue(target.Index(i), slc[i], prop); err != nil {
+				return err
+			}
+		}
+		return nil
+	}
+
+	// Handle maps (whose keys are always strings)
+	if targetType.Kind() == reflect.Map {
+		var mp map[string]json.RawMessage
+		if err := json.Unmarshal(inputValue, &mp); err != nil {
+			return err
+		}
+		target.Set(reflect.MakeMap(targetType))
+		var keyprop, valprop *proto.Properties
+		if prop != nil {
+			// These could still be nil if the protobuf metadata is broken somehow.
+			// TODO: This won't work because the fields are unexported.
+			// We should probably just reparse them.
+			//keyprop, valprop = prop.mkeyprop, prop.mvalprop
+		}
+		for ks, raw := range mp {
+			// Unmarshal map key. The core json library already decoded the key into a
+			// string, so we handle that specially. Other types were quoted post-serialization.
+			var k reflect.Value
+			if targetType.Key().Kind() == reflect.String {
+				k = reflect.ValueOf(ks)
+			} else {
+				k = reflect.New(targetType.Key()).Elem()
+				if err := u.unmarshalValue(k, json.RawMessage(ks), keyprop); err != nil {
+					return err
+				}
+			}
+
+			// Unmarshal map value.
+			v := reflect.New(targetType.Elem()).Elem()
+			if err := u.unmarshalValue(v, raw, valprop); err != nil {
+				return err
+			}
+			target.SetMapIndex(k, v)
+		}
+		return nil
+	}
+
+	// 64-bit integers can be encoded as strings. In this case we drop
+	// the quotes and proceed as normal.
+	isNum := targetType.Kind() == reflect.Int64 || targetType.Kind() == reflect.Uint64
+	if isNum && strings.HasPrefix(string(inputValue), `"`) {
+		inputValue = inputValue[1 : len(inputValue)-1]
+	}
+
+	// Use the encoding/json for parsing other value types.
+	return json.Unmarshal(inputValue, target.Addr().Interface())
+}
+
+// jsonProperties returns parsed proto.Properties for the field and corrects JSONName attribute.
+func jsonProperties(f reflect.StructField, origName bool) *proto.Properties {
+	var prop proto.Properties
+	prop.Init(f.Type, f.Name, f.Tag.Get("protobuf"), &f)
+	if origName || prop.JSONName == "" {
+		prop.JSONName = prop.OrigName
+	}
+	return &prop
+}
+
+type fieldNames struct {
+	orig, camel string
+}
+
+func acceptedJSONFieldNames(prop *proto.Properties) fieldNames {
+	opts := fieldNames{orig: prop.OrigName, camel: prop.OrigName}
+	if prop.JSONName != "" {
+		opts.camel = prop.JSONName
+	}
+	return opts
+}
+
+// Writer wrapper inspired by https://blog.golang.org/errors-are-values
+type errWriter struct {
+	writer io.Writer
+	err    error
+}
+
+func (w *errWriter) write(str string) {
+	if w.err != nil {
+		return
+	}
+	_, w.err = w.writer.Write([]byte(str))
+}
+
+// Map fields may have key types of non-float scalars, strings and enums.
+// The easiest way to sort them in some deterministic order is to use fmt.
+// If this turns out to be inefficient we can always consider other options,
+// such as doing a Schwartzian transform.
+//
+// Numeric keys are sorted in numeric order per
+// https://developers.google.com/protocol-buffers/docs/proto#maps.
+type mapKeys []reflect.Value
+
+func (s mapKeys) Len() int      { return len(s) }
+func (s mapKeys) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
+func (s mapKeys) Less(i, j int) bool {
+	if k := s[i].Kind(); k == s[j].Kind() {
+		switch k {
+		case reflect.Int32, reflect.Int64:
+			return s[i].Int() < s[j].Int()
+		case reflect.Uint32, reflect.Uint64:
+			return s[i].Uint() < s[j].Uint()
+		}
+	}
+	return fmt.Sprint(s[i].Interface()) < fmt.Sprint(s[j].Interface())
+}
diff --git a/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test.go b/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test.go
new file mode 100644
index 000000000..e237df55c
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test.go
@@ -0,0 +1,563 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2015 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package jsonpb
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"reflect"
+	"strings"
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+
+	pb "github.com/golang/protobuf/jsonpb/jsonpb_test_proto"
+	proto3pb "github.com/golang/protobuf/proto/proto3_proto"
+	anypb "github.com/golang/protobuf/ptypes/any"
+	durpb "github.com/golang/protobuf/ptypes/duration"
+	stpb "github.com/golang/protobuf/ptypes/struct"
+	tspb "github.com/golang/protobuf/ptypes/timestamp"
+	wpb "github.com/golang/protobuf/ptypes/wrappers"
+)
+
+var (
+	marshaler = Marshaler{}
+
+	marshalerAllOptions = Marshaler{
+		Indent: "  ",
+	}
+
+	simpleObject = &pb.Simple{
+		OInt32:  proto.Int32(-32),
+		OInt64:  proto.Int64(-6400000000),
+		OUint32: proto.Uint32(32),
+		OUint64: proto.Uint64(6400000000),
+		OSint32: proto.Int32(-13),
+		OSint64: proto.Int64(-2600000000),
+		OFloat:  proto.Float32(3.14),
+		ODouble: proto.Float64(6.02214179e23),
+		OBool:   proto.Bool(true),
+		OString: proto.String("hello \"there\""),
+		OBytes:  []byte("beep boop"),
+	}
+
+	simpleObjectJSON = `{` +
+		`"oBool":true,` +
+		`"oInt32":-32,` +
+		`"oInt64":"-6400000000",` +
+		`"oUint32":32,` +
+		`"oUint64":"6400000000",` +
+		`"oSint32":-13,` +
+		`"oSint64":"-2600000000",` +
+		`"oFloat":3.14,` +
+		`"oDouble":6.02214179e+23,` +
+		`"oString":"hello \"there\"",` +
+		`"oBytes":"YmVlcCBib29w"` +
+		`}`
+
+	simpleObjectPrettyJSON = `{
+  "oBool": true,
+  "oInt32": -32,
+  "oInt64": "-6400000000",
+  "oUint32": 32,
+  "oUint64": "6400000000",
+  "oSint32": -13,
+  "oSint64": "-2600000000",
+  "oFloat": 3.14,
+  "oDouble": 6.02214179e+23,
+  "oString": "hello \"there\"",
+  "oBytes": "YmVlcCBib29w"
+}`
+
+	repeatsObject = &pb.Repeats{
+		RBool:   []bool{true, false, true},
+		RInt32:  []int32{-3, -4, -5},
+		RInt64:  []int64{-123456789, -987654321},
+		RUint32: []uint32{1, 2, 3},
+		RUint64: []uint64{6789012345, 3456789012},
+		RSint32: []int32{-1, -2, -3},
+		RSint64: []int64{-6789012345, -3456789012},
+		RFloat:  []float32{3.14, 6.28},
+		RDouble: []float64{299792458 * 1e20, 6.62606957e-34},
+		RString: []string{"happy", "days"},
+		RBytes:  [][]byte{[]byte("skittles"), []byte("m&m's")},
+	}
+
+	repeatsObjectJSON = `{` +
+		`"rBool":[true,false,true],` +
+		`"rInt32":[-3,-4,-5],` +
+		`"rInt64":["-123456789","-987654321"],` +
+		`"rUint32":[1,2,3],` +
+		`"rUint64":["6789012345","3456789012"],` +
+		`"rSint32":[-1,-2,-3],` +
+		`"rSint64":["-6789012345","-3456789012"],` +
+		`"rFloat":[3.14,6.28],` +
+		`"rDouble":[2.99792458e+28,6.62606957e-34],` +
+		`"rString":["happy","days"],` +
+		`"rBytes":["c2tpdHRsZXM=","bSZtJ3M="]` +
+		`}`
+
+	repeatsObjectPrettyJSON = `{
+  "rBool": [
+    true,
+    false,
+    true
+  ],
+  "rInt32": [
+    -3,
+    -4,
+    -5
+  ],
+  "rInt64": [
+    "-123456789",
+    "-987654321"
+  ],
+  "rUint32": [
+    1,
+    2,
+    3
+  ],
+  "rUint64": [
+    "6789012345",
+    "3456789012"
+  ],
+  "rSint32": [
+    -1,
+    -2,
+    -3
+  ],
+  "rSint64": [
+    "-6789012345",
+    "-3456789012"
+  ],
+  "rFloat": [
+    3.14,
+    6.28
+  ],
+  "rDouble": [
+    2.99792458e+28,
+    6.62606957e-34
+  ],
+  "rString": [
+    "happy",
+    "days"
+  ],
+  "rBytes": [
+    "c2tpdHRsZXM=",
+    "bSZtJ3M="
+  ]
+}`
+
+	innerSimple   = &pb.Simple{OInt32: proto.Int32(-32)}
+	innerSimple2  = &pb.Simple{OInt64: proto.Int64(25)}
+	innerRepeats  = &pb.Repeats{RString: []string{"roses", "red"}}
+	innerRepeats2 = &pb.Repeats{RString: []string{"violets", "blue"}}
+	complexObject = &pb.Widget{
+		Color:    pb.Widget_GREEN.Enum(),
+		RColor:   []pb.Widget_Color{pb.Widget_RED, pb.Widget_GREEN, pb.Widget_BLUE},
+		Simple:   innerSimple,
+		RSimple:  []*pb.Simple{innerSimple, innerSimple2},
+		Repeats:  innerRepeats,
+		RRepeats: []*pb.Repeats{innerRepeats, innerRepeats2},
+	}
+
+	complexObjectJSON = `{"color":"GREEN",` +
+		`"rColor":["RED","GREEN","BLUE"],` +
+		`"simple":{"oInt32":-32},` +
+		`"rSimple":[{"oInt32":-32},{"oInt64":"25"}],` +
+		`"repeats":{"rString":["roses","red"]},` +
+		`"rRepeats":[{"rString":["roses","red"]},{"rString":["violets","blue"]}]` +
+		`}`
+
+	complexObjectPrettyJSON = `{
+  "color": "GREEN",
+  "rColor": [
+    "RED",
+    "GREEN",
+    "BLUE"
+  ],
+  "simple": {
+    "oInt32": -32
+  },
+  "rSimple": [
+    {
+      "oInt32": -32
+    },
+    {
+      "oInt64": "25"
+    }
+  ],
+  "repeats": {
+    "rString": [
+      "roses",
+      "red"
+    ]
+  },
+  "rRepeats": [
+    {
+      "rString": [
+        "roses",
+        "red"
+      ]
+    },
+    {
+      "rString": [
+        "violets",
+        "blue"
+      ]
+    }
+  ]
+}`
+
+	colorPrettyJSON = `{
+ "color": 2
+}`
+
+	colorListPrettyJSON = `{
+  "color": 1000,
+  "rColor": [
+    "RED"
+  ]
+}`
+
+	nummyPrettyJSON = `{
+  "nummy": {
+    "1": 2,
+    "3": 4
+  }
+}`
+
+	objjyPrettyJSON = `{
+  "objjy": {
+    "1": {
+      "dub": 1
+    }
+  }
+}`
+	realNumber     = &pb.Real{Value: proto.Float64(3.14159265359)}
+	realNumberName = "Pi"
+	complexNumber  = &pb.Complex{Imaginary: proto.Float64(0.5772156649)}
+	realNumberJSON = `{` +
+		`"value":3.14159265359,` +
+		`"[jsonpb.Complex.real_extension]":{"imaginary":0.5772156649},` +
+		`"[jsonpb.name]":"Pi"` +
+		`}`
+
+	anySimple = &pb.KnownTypes{
+		An: &anypb.Any{
+			TypeUrl: "something.example.com/jsonpb.Simple",
+			Value: []byte{
+				// &pb.Simple{OBool:true}
+				1 << 3, 1,
+			},
+		},
+	}
+	anySimpleJSON       = `{"an":{"@type":"something.example.com/jsonpb.Simple","oBool":true}}`
+	anySimplePrettyJSON = `{
+  "an": {
+    "@type": "something.example.com/jsonpb.Simple",
+    "oBool": true
+  }
+}`
+
+	anyWellKnown = &pb.KnownTypes{
+		An: &anypb.Any{
+			TypeUrl: "type.googleapis.com/google.protobuf.Duration",
+			Value: []byte{
+				// &durpb.Duration{Seconds: 1, Nanos: 212000000 }
+				1 << 3, 1, // seconds
+				2 << 3, 0x80, 0xba, 0x8b, 0x65, // nanos
+			},
+		},
+	}
+	anyWellKnownJSON       = `{"an":{"@type":"type.googleapis.com/google.protobuf.Duration","value":"1.212s"}}`
+	anyWellKnownPrettyJSON = `{
+  "an": {
+    "@type": "type.googleapis.com/google.protobuf.Duration",
+    "value": "1.212s"
+  }
+}`
+)
+
+func init() {
+	if err := proto.SetExtension(realNumber, pb.E_Name, &realNumberName); err != nil {
+		panic(err)
+	}
+	if err := proto.SetExtension(realNumber, pb.E_Complex_RealExtension, complexNumber); err != nil {
+		panic(err)
+	}
+}
+
+var marshalingTests = []struct {
+	desc      string
+	marshaler Marshaler
+	pb        proto.Message
+	json      string
+}{
+	{"simple flat object", marshaler, simpleObject, simpleObjectJSON},
+	{"simple pretty object", marshalerAllOptions, simpleObject, simpleObjectPrettyJSON},
+	{"repeated fields flat object", marshaler, repeatsObject, repeatsObjectJSON},
+	{"repeated fields pretty object", marshalerAllOptions, repeatsObject, repeatsObjectPrettyJSON},
+	{"nested message/enum flat object", marshaler, complexObject, complexObjectJSON},
+	{"nested message/enum pretty object", marshalerAllOptions, complexObject, complexObjectPrettyJSON},
+	{"enum-string flat object", Marshaler{},
+		&pb.Widget{Color: pb.Widget_BLUE.Enum()}, `{"color":"BLUE"}`},
+	{"enum-value pretty object", Marshaler{EnumsAsInts: true, Indent: " "},
+		&pb.Widget{Color: pb.Widget_BLUE.Enum()}, colorPrettyJSON},
+	{"unknown enum value object", marshalerAllOptions,
+		&pb.Widget{Color: pb.Widget_Color(1000).Enum(), RColor: []pb.Widget_Color{pb.Widget_RED}}, colorListPrettyJSON},
+	{"repeated proto3 enum", Marshaler{},
+		&proto3pb.Message{RFunny: []proto3pb.Message_Humour{
+			proto3pb.Message_PUNS,
+			proto3pb.Message_SLAPSTICK,
+		}},
+		`{"rFunny":["PUNS","SLAPSTICK"]}`},
+	{"repeated proto3 enum as int", Marshaler{EnumsAsInts: true},
+		&proto3pb.Message{RFunny: []proto3pb.Message_Humour{
+			proto3pb.Message_PUNS,
+			proto3pb.Message_SLAPSTICK,
+		}},
+		`{"rFunny":[1,2]}`},
+	{"empty value", marshaler, &pb.Simple3{}, `{}`},
+	{"empty value emitted", Marshaler{EmitDefaults: true}, &pb.Simple3{}, `{"dub":0}`},
+	{"map<int64, int32>", marshaler, &pb.Mappy{Nummy: map[int64]int32{1: 2, 3: 4}}, `{"nummy":{"1":2,"3":4}}`},
+	{"map<int64, int32>", marshalerAllOptions, &pb.Mappy{Nummy: map[int64]int32{1: 2, 3: 4}}, nummyPrettyJSON},
+	{"map<string, string>", marshaler,
+		&pb.Mappy{Strry: map[string]string{`"one"`: "two", "three": "four"}},
+		`{"strry":{"\"one\"":"two","three":"four"}}`},
+	{"map<int32, Object>", marshaler,
+		&pb.Mappy{Objjy: map[int32]*pb.Simple3{1: &pb.Simple3{Dub: 1}}}, `{"objjy":{"1":{"dub":1}}}`},
+	{"map<int32, Object>", marshalerAllOptions,
+		&pb.Mappy{Objjy: map[int32]*pb.Simple3{1: &pb.Simple3{Dub: 1}}}, objjyPrettyJSON},
+	{"map<int64, string>", marshaler, &pb.Mappy{Buggy: map[int64]string{1234: "yup"}},
+		`{"buggy":{"1234":"yup"}}`},
+	{"map<bool, bool>", marshaler, &pb.Mappy{Booly: map[bool]bool{false: true}}, `{"booly":{"false":true}}`},
+	// TODO: This is broken.
+	//{"map<string, enum>", marshaler, &pb.Mappy{Enumy: map[string]pb.Numeral{"XIV": pb.Numeral_ROMAN}}, `{"enumy":{"XIV":"ROMAN"}`},
+	{"map<string, enum as int>", Marshaler{EnumsAsInts: true}, &pb.Mappy{Enumy: map[string]pb.Numeral{"XIV": pb.Numeral_ROMAN}}, `{"enumy":{"XIV":2}}`},
+	{"map<int32, bool>", marshaler, &pb.Mappy{S32Booly: map[int32]bool{1: true, 3: false, 10: true, 12: false}}, `{"s32booly":{"1":true,"3":false,"10":true,"12":false}}`},
+	{"map<int64, bool>", marshaler, &pb.Mappy{S64Booly: map[int64]bool{1: true, 3: false, 10: true, 12: false}}, `{"s64booly":{"1":true,"3":false,"10":true,"12":false}}`},
+	{"map<uint32, bool>", marshaler, &pb.Mappy{U32Booly: map[uint32]bool{1: true, 3: false, 10: true, 12: false}}, `{"u32booly":{"1":true,"3":false,"10":true,"12":false}}`},
+	{"map<uint64, bool>", marshaler, &pb.Mappy{U64Booly: map[uint64]bool{1: true, 3: false, 10: true, 12: false}}, `{"u64booly":{"1":true,"3":false,"10":true,"12":false}}`},
+	{"proto2 map<int64, string>", marshaler, &pb.Maps{MInt64Str: map[int64]string{213: "cat"}},
+		`{"mInt64Str":{"213":"cat"}}`},
+	{"proto2 map<bool, Object>", marshaler,
+		&pb.Maps{MBoolSimple: map[bool]*pb.Simple{true: &pb.Simple{OInt32: proto.Int32(1)}}},
+		`{"mBoolSimple":{"true":{"oInt32":1}}}`},
+	{"oneof, not set", marshaler, &pb.MsgWithOneof{}, `{}`},
+	{"oneof, set", marshaler, &pb.MsgWithOneof{Union: &pb.MsgWithOneof_Title{"Grand Poobah"}}, `{"title":"Grand Poobah"}`},
+	{"force orig_name", Marshaler{OrigName: true}, &pb.Simple{OInt32: proto.Int32(4)},
+		`{"o_int32":4}`},
+	{"proto2 extension", marshaler, realNumber, realNumberJSON},
+	{"Any with message", marshaler, anySimple, anySimpleJSON},
+	{"Any with message and indent", marshalerAllOptions, anySimple, anySimplePrettyJSON},
+	{"Any with WKT", marshaler, anyWellKnown, anyWellKnownJSON},
+	{"Any with WKT and indent", marshalerAllOptions, anyWellKnown, anyWellKnownPrettyJSON},
+	{"Duration", marshaler, &pb.KnownTypes{Dur: &durpb.Duration{Seconds: 3}}, `{"dur":"3.000s"}`},
+	{"Struct", marshaler, &pb.KnownTypes{St: &stpb.Struct{
+		Fields: map[string]*stpb.Value{
+			"one": &stpb.Value{Kind: &stpb.Value_StringValue{"loneliest number"}},
+			"two": &stpb.Value{Kind: &stpb.Value_NullValue{stpb.NullValue_NULL_VALUE}},
+		},
+	}}, `{"st":{"one":"loneliest number","two":null}}`},
+	{"Timestamp", marshaler, &pb.KnownTypes{Ts: &tspb.Timestamp{Seconds: 14e8, Nanos: 21e6}}, `{"ts":"2014-05-13T16:53:20.021Z"}`},
+
+	{"DoubleValue", marshaler, &pb.KnownTypes{Dbl: &wpb.DoubleValue{Value: 1.2}}, `{"dbl":1.2}`},
+	{"FloatValue", marshaler, &pb.KnownTypes{Flt: &wpb.FloatValue{Value: 1.2}}, `{"flt":1.2}`},
+	{"Int64Value", marshaler, &pb.KnownTypes{I64: &wpb.Int64Value{Value: -3}}, `{"i64":"-3"}`},
+	{"UInt64Value", marshaler, &pb.KnownTypes{U64: &wpb.UInt64Value{Value: 3}}, `{"u64":"3"}`},
+	{"Int32Value", marshaler, &pb.KnownTypes{I32: &wpb.Int32Value{Value: -4}}, `{"i32":-4}`},
+	{"UInt32Value", marshaler, &pb.KnownTypes{U32: &wpb.UInt32Value{Value: 4}}, `{"u32":4}`},
+	{"BoolValue", marshaler, &pb.KnownTypes{Bool: &wpb.BoolValue{Value: true}}, `{"bool":true}`},
+	{"StringValue", marshaler, &pb.KnownTypes{Str: &wpb.StringValue{Value: "plush"}}, `{"str":"plush"}`},
+	{"BytesValue", marshaler, &pb.KnownTypes{Bytes: &wpb.BytesValue{Value: []byte("wow")}}, `{"bytes":"d293"}`},
+}
+
+func TestMarshaling(t *testing.T) {
+	for _, tt := range marshalingTests {
+		json, err := tt.marshaler.MarshalToString(tt.pb)
+		if err != nil {
+			t.Errorf("%s: marshaling error: %v", tt.desc, err)
+		} else if tt.json != json {
+			t.Errorf("%s: got [%v] want [%v]", tt.desc, json, tt.json)
+		}
+	}
+}
+
+var unmarshalingTests = []struct {
+	desc        string
+	unmarshaler Unmarshaler
+	json        string
+	pb          proto.Message
+}{
+	{"simple flat object", Unmarshaler{}, simpleObjectJSON, simpleObject},
+	{"simple pretty object", Unmarshaler{}, simpleObjectPrettyJSON, simpleObject},
+	{"repeated fields flat object", Unmarshaler{}, repeatsObjectJSON, repeatsObject},
+	{"repeated fields pretty object", Unmarshaler{}, repeatsObjectPrettyJSON, repeatsObject},
+	{"nested message/enum flat object", Unmarshaler{}, complexObjectJSON, complexObject},
+	{"nested message/enum pretty object", Unmarshaler{}, complexObjectPrettyJSON, complexObject},
+	{"enum-string object", Unmarshaler{}, `{"color":"BLUE"}`, &pb.Widget{Color: pb.Widget_BLUE.Enum()}},
+	{"enum-value object", Unmarshaler{}, "{\n \"color\": 2\n}", &pb.Widget{Color: pb.Widget_BLUE.Enum()}},
+	{"unknown field with allowed option", Unmarshaler{AllowUnknownFields: true}, `{"unknown": "foo"}`, new(pb.Simple)},
+	{"proto3 enum string", Unmarshaler{}, `{"hilarity":"PUNS"}`, &proto3pb.Message{Hilarity: proto3pb.Message_PUNS}},
+	{"proto3 enum value", Unmarshaler{}, `{"hilarity":1}`, &proto3pb.Message{Hilarity: proto3pb.Message_PUNS}},
+	{"unknown enum value object",
+		Unmarshaler{},
+		"{\n  \"color\": 1000,\n  \"r_color\": [\n    \"RED\"\n  ]\n}",
+		&pb.Widget{Color: pb.Widget_Color(1000).Enum(), RColor: []pb.Widget_Color{pb.Widget_RED}}},
+	{"repeated proto3 enum", Unmarshaler{}, `{"rFunny":["PUNS","SLAPSTICK"]}`,
+		&proto3pb.Message{RFunny: []proto3pb.Message_Humour{
+			proto3pb.Message_PUNS,
+			proto3pb.Message_SLAPSTICK,
+		}}},
+	{"repeated proto3 enum as int", Unmarshaler{}, `{"rFunny":[1,2]}`,
+		&proto3pb.Message{RFunny: []proto3pb.Message_Humour{
+			proto3pb.Message_PUNS,
+			proto3pb.Message_SLAPSTICK,
+		}}},
+	{"repeated proto3 enum as mix of strings and ints", Unmarshaler{}, `{"rFunny":["PUNS",2]}`,
+		&proto3pb.Message{RFunny: []proto3pb.Message_Humour{
+			proto3pb.Message_PUNS,
+			proto3pb.Message_SLAPSTICK,
+		}}},
+	{"unquoted int64 object", Unmarshaler{}, `{"oInt64":-314}`, &pb.Simple{OInt64: proto.Int64(-314)}},
+	{"unquoted uint64 object", Unmarshaler{}, `{"oUint64":123}`, &pb.Simple{OUint64: proto.Uint64(123)}},
+	{"map<int64, int32>", Unmarshaler{}, `{"nummy":{"1":2,"3":4}}`, &pb.Mappy{Nummy: map[int64]int32{1: 2, 3: 4}}},
+	{"map<string, string>", Unmarshaler{}, `{"strry":{"\"one\"":"two","three":"four"}}`, &pb.Mappy{Strry: map[string]string{`"one"`: "two", "three": "four"}}},
+	{"map<int32, Object>", Unmarshaler{}, `{"objjy":{"1":{"dub":1}}}`, &pb.Mappy{Objjy: map[int32]*pb.Simple3{1: &pb.Simple3{Dub: 1}}}},
+	// TODO: This is broken.
+	//{"map<string, enum>", Unmarshaler{}, `{"enumy":{"XIV":"ROMAN"}`, &pb.Mappy{Enumy: map[string]pb.Numeral{"XIV": pb.Numeral_ROMAN}}},
+	{"map<string, enum as int>", Unmarshaler{}, `{"enumy":{"XIV":2}}`, &pb.Mappy{Enumy: map[string]pb.Numeral{"XIV": pb.Numeral_ROMAN}}},
+	{"oneof", Unmarshaler{}, `{"salary":31000}`, &pb.MsgWithOneof{Union: &pb.MsgWithOneof_Salary{31000}}},
+	{"oneof spec name", Unmarshaler{}, `{"Country":"Australia"}`, &pb.MsgWithOneof{Union: &pb.MsgWithOneof_Country{"Australia"}}},
+	{"oneof orig_name", Unmarshaler{}, `{"Country":"Australia"}`, &pb.MsgWithOneof{Union: &pb.MsgWithOneof_Country{"Australia"}}},
+	{"oneof spec name2", Unmarshaler{}, `{"homeAddress":"Australia"}`, &pb.MsgWithOneof{Union: &pb.MsgWithOneof_HomeAddress{"Australia"}}},
+	{"oneof orig_name2", Unmarshaler{}, `{"home_address":"Australia"}`, &pb.MsgWithOneof{Union: &pb.MsgWithOneof_HomeAddress{"Australia"}}},
+	{"orig_name input", Unmarshaler{}, `{"o_bool":true}`, &pb.Simple{OBool: proto.Bool(true)}},
+	{"camelName input", Unmarshaler{}, `{"oBool":true}`, &pb.Simple{OBool: proto.Bool(true)}},
+
+	{"Duration", Unmarshaler{}, `{"dur":"3.000s"}`, &pb.KnownTypes{Dur: &durpb.Duration{Seconds: 3}}},
+	{"null Duration", Unmarshaler{}, `{"dur":null}`, &pb.KnownTypes{Dur: &durpb.Duration{Seconds: 0}}},
+	{"Timestamp", Unmarshaler{}, `{"ts":"2014-05-13T16:53:20.021Z"}`, &pb.KnownTypes{Ts: &tspb.Timestamp{Seconds: 14e8, Nanos: 21e6}}},
+	{"PreEpochTimestamp", Unmarshaler{}, `{"ts":"1969-12-31T23:59:58.999999995Z"}`, &pb.KnownTypes{Ts: &tspb.Timestamp{Seconds: -2, Nanos: 999999995}}},
+	{"ZeroTimeTimestamp", Unmarshaler{}, `{"ts":"0001-01-01T00:00:00Z"}`, &pb.KnownTypes{Ts: &tspb.Timestamp{Seconds: -62135596800, Nanos: 0}}},
+	{"null Timestamp", Unmarshaler{}, `{"ts":null}`, &pb.KnownTypes{Ts: &tspb.Timestamp{Seconds: 0, Nanos: 0}}},
+
+	{"DoubleValue", Unmarshaler{}, `{"dbl":1.2}`, &pb.KnownTypes{Dbl: &wpb.DoubleValue{Value: 1.2}}},
+	{"FloatValue", Unmarshaler{}, `{"flt":1.2}`, &pb.KnownTypes{Flt: &wpb.FloatValue{Value: 1.2}}},
+	{"Int64Value", Unmarshaler{}, `{"i64":"-3"}`, &pb.KnownTypes{I64: &wpb.Int64Value{Value: -3}}},
+	{"UInt64Value", Unmarshaler{}, `{"u64":"3"}`, &pb.KnownTypes{U64: &wpb.UInt64Value{Value: 3}}},
+	{"Int32Value", Unmarshaler{}, `{"i32":-4}`, &pb.KnownTypes{I32: &wpb.Int32Value{Value: -4}}},
+	{"UInt32Value", Unmarshaler{}, `{"u32":4}`, &pb.KnownTypes{U32: &wpb.UInt32Value{Value: 4}}},
+	{"BoolValue", Unmarshaler{}, `{"bool":true}`, &pb.KnownTypes{Bool: &wpb.BoolValue{Value: true}}},
+	{"StringValue", Unmarshaler{}, `{"str":"plush"}`, &pb.KnownTypes{Str: &wpb.StringValue{Value: "plush"}}},
+	{"BytesValue", Unmarshaler{}, `{"bytes":"d293"}`, &pb.KnownTypes{Bytes: &wpb.BytesValue{Value: []byte("wow")}}},
+	// `null` is also a permissible value. Let's just test one.
+	{"null DoubleValue", Unmarshaler{}, `{"dbl":null}`, &pb.KnownTypes{Dbl: &wpb.DoubleValue{}}},
+}
+
+func TestUnmarshaling(t *testing.T) {
+	for _, tt := range unmarshalingTests {
+		// Make a new instance of the type of our expected object.
+		p := reflect.New(reflect.TypeOf(tt.pb).Elem()).Interface().(proto.Message)
+
+		err := tt.unmarshaler.Unmarshal(strings.NewReader(tt.json), p)
+		if err != nil {
+			t.Errorf("%s: %v", tt.desc, err)
+			continue
+		}
+
+		// For easier diffs, compare text strings of the protos.
+		exp := proto.MarshalTextString(tt.pb)
+		act := proto.MarshalTextString(p)
+		if string(exp) != string(act) {
+			t.Errorf("%s: got [%s] want [%s]", tt.desc, act, exp)
+		}
+	}
+}
+
+func TestUnmarshalNext(t *testing.T) {
+	// We only need to check against a few, not all of them.
+	tests := unmarshalingTests[:5]
+
+	// Create a buffer with many concatenated JSON objects.
+	var b bytes.Buffer
+	for _, tt := range tests {
+		b.WriteString(tt.json)
+	}
+
+	dec := json.NewDecoder(&b)
+	for _, tt := range tests {
+		// Make a new instance of the type of our expected object.
+		p := reflect.New(reflect.TypeOf(tt.pb).Elem()).Interface().(proto.Message)
+
+		err := tt.unmarshaler.UnmarshalNext(dec, p)
+		if err != nil {
+			t.Errorf("%s: %v", tt.desc, err)
+			continue
+		}
+
+		// For easier diffs, compare text strings of the protos.
+		exp := proto.MarshalTextString(tt.pb)
+		act := proto.MarshalTextString(p)
+		if string(exp) != string(act) {
+			t.Errorf("%s: got [%s] want [%s]", tt.desc, act, exp)
+		}
+	}
+
+	p := &pb.Simple{}
+	err := new(Unmarshaler).UnmarshalNext(dec, p)
+	if err != io.EOF {
+		t.Errorf("eof: got %v, expected io.EOF", err)
+	}
+}
+
+var unmarshalingShouldError = []struct {
+	desc string
+	in   string
+	pb   proto.Message
+}{
+	{"a value", "666", new(pb.Simple)},
+	{"gibberish", "{adskja123;l23=-=", new(pb.Simple)},
+	{"unknown field", `{"unknown": "foo"}`, new(pb.Simple)},
+	{"unknown enum name", `{"hilarity":"DAVE"}`, new(proto3pb.Message)},
+}
+
+func TestUnmarshalingBadInput(t *testing.T) {
+	for _, tt := range unmarshalingShouldError {
+		err := UnmarshalString(tt.in, tt.pb)
+		if err == nil {
+			t.Errorf("an error was expected when parsing %q instead of an object", tt.desc)
+		}
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/Makefile b/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/Makefile
new file mode 100644
index 000000000..eeda8ae53
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/Makefile
@@ -0,0 +1,33 @@
+# Go support for Protocol Buffers - Google's data interchange format
+#
+# Copyright 2015 The Go Authors.  All rights reserved.
+# https://github.com/golang/protobuf
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+regenerate:
+	protoc --go_out=Mgoogle/protobuf/any.proto=github.com/golang/protobuf/ptypes/any,Mgoogle/protobuf/duration.proto=github.com/golang/protobuf/ptypes/duration,Mgoogle/protobuf/struct.proto=github.com/golang/protobuf/ptypes/struct,Mgoogle/protobuf/timestamp.proto=github.com/golang/protobuf/ptypes/timestamp,Mgoogle/protobuf/wrappers.proto=github.com/golang/protobuf/ptypes/wrappers:. *.proto
diff --git a/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/more_test_objects.pb.go b/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/more_test_objects.pb.go
new file mode 100644
index 000000000..d6ff6413f
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/more_test_objects.pb.go
@@ -0,0 +1,207 @@
+// Code generated by protoc-gen-go.
+// source: more_test_objects.proto
+// DO NOT EDIT!
+
+/*
+Package jsonpb is a generated protocol buffer package.
+
+It is generated from these files:
+	more_test_objects.proto
+	test_objects.proto
+
+It has these top-level messages:
+	Simple3
+	Mappy
+	Simple
+	Repeats
+	Widget
+	Maps
+	MsgWithOneof
+	Real
+	Complex
+	KnownTypes
+*/
+package jsonpb
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+type Numeral int32
+
+const (
+	Numeral_UNKNOWN Numeral = 0
+	Numeral_ARABIC  Numeral = 1
+	Numeral_ROMAN   Numeral = 2
+)
+
+var Numeral_name = map[int32]string{
+	0: "UNKNOWN",
+	1: "ARABIC",
+	2: "ROMAN",
+}
+var Numeral_value = map[string]int32{
+	"UNKNOWN": 0,
+	"ARABIC":  1,
+	"ROMAN":   2,
+}
+
+func (x Numeral) String() string {
+	return proto.EnumName(Numeral_name, int32(x))
+}
+func (Numeral) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+type Simple3 struct {
+	Dub float64 `protobuf:"fixed64,1,opt,name=dub" json:"dub,omitempty"`
+}
+
+func (m *Simple3) Reset()                    { *m = Simple3{} }
+func (m *Simple3) String() string            { return proto.CompactTextString(m) }
+func (*Simple3) ProtoMessage()               {}
+func (*Simple3) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+func (m *Simple3) GetDub() float64 {
+	if m != nil {
+		return m.Dub
+	}
+	return 0
+}
+
+type Mappy struct {
+	Nummy    map[int64]int32    `protobuf:"bytes,1,rep,name=nummy" json:"nummy,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	Strry    map[string]string  `protobuf:"bytes,2,rep,name=strry" json:"strry,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	Objjy    map[int32]*Simple3 `protobuf:"bytes,3,rep,name=objjy" json:"objjy,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	Buggy    map[int64]string   `protobuf:"bytes,4,rep,name=buggy" json:"buggy,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	Booly    map[bool]bool      `protobuf:"bytes,5,rep,name=booly" json:"booly,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	Enumy    map[string]Numeral `protobuf:"bytes,6,rep,name=enumy" json:"enumy,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"varint,2,opt,name=value,enum=jsonpb.Numeral"`
+	S32Booly map[int32]bool     `protobuf:"bytes,7,rep,name=s32booly" json:"s32booly,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	S64Booly map[int64]bool     `protobuf:"bytes,8,rep,name=s64booly" json:"s64booly,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	U32Booly map[uint32]bool    `protobuf:"bytes,9,rep,name=u32booly" json:"u32booly,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	U64Booly map[uint64]bool    `protobuf:"bytes,10,rep,name=u64booly" json:"u64booly,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+}
+
+func (m *Mappy) Reset()                    { *m = Mappy{} }
+func (m *Mappy) String() string            { return proto.CompactTextString(m) }
+func (*Mappy) ProtoMessage()               {}
+func (*Mappy) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+func (m *Mappy) GetNummy() map[int64]int32 {
+	if m != nil {
+		return m.Nummy
+	}
+	return nil
+}
+
+func (m *Mappy) GetStrry() map[string]string {
+	if m != nil {
+		return m.Strry
+	}
+	return nil
+}
+
+func (m *Mappy) GetObjjy() map[int32]*Simple3 {
+	if m != nil {
+		return m.Objjy
+	}
+	return nil
+}
+
+func (m *Mappy) GetBuggy() map[int64]string {
+	if m != nil {
+		return m.Buggy
+	}
+	return nil
+}
+
+func (m *Mappy) GetBooly() map[bool]bool {
+	if m != nil {
+		return m.Booly
+	}
+	return nil
+}
+
+func (m *Mappy) GetEnumy() map[string]Numeral {
+	if m != nil {
+		return m.Enumy
+	}
+	return nil
+}
+
+func (m *Mappy) GetS32Booly() map[int32]bool {
+	if m != nil {
+		return m.S32Booly
+	}
+	return nil
+}
+
+func (m *Mappy) GetS64Booly() map[int64]bool {
+	if m != nil {
+		return m.S64Booly
+	}
+	return nil
+}
+
+func (m *Mappy) GetU32Booly() map[uint32]bool {
+	if m != nil {
+		return m.U32Booly
+	}
+	return nil
+}
+
+func (m *Mappy) GetU64Booly() map[uint64]bool {
+	if m != nil {
+		return m.U64Booly
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterType((*Simple3)(nil), "jsonpb.Simple3")
+	proto.RegisterType((*Mappy)(nil), "jsonpb.Mappy")
+	proto.RegisterEnum("jsonpb.Numeral", Numeral_name, Numeral_value)
+}
+
+func init() { proto.RegisterFile("more_test_objects.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
+	// 444 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x8c, 0x94, 0xc1, 0x6b, 0xdb, 0x30,
+	0x14, 0x87, 0xe7, 0xa4, 0x4e, 0xec, 0x17, 0xba, 0x19, 0x31, 0x98, 0x58, 0x2f, 0xa1, 0x30, 0x08,
+	0x83, 0xf9, 0x90, 0x8c, 0xad, 0x6c, 0xa7, 0x74, 0xf4, 0x50, 0x46, 0x1d, 0x70, 0x09, 0x3b, 0x96,
+	0x78, 0x13, 0x65, 0x9e, 0x6d, 0x19, 0xdb, 0x1a, 0xe8, 0x8f, 0x1f, 0x8c, 0x27, 0xcb, 0xb5, 0x6c,
+	0x14, 0xd2, 0x9b, 0xcc, 0xef, 0xfb, 0xf2, 0x9e, 0xf4, 0x1e, 0x81, 0x37, 0x39, 0xaf, 0xd8, 0x43,
+	0xc3, 0xea, 0xe6, 0x81, 0x27, 0x29, 0xfb, 0xd9, 0xd4, 0x61, 0x59, 0xf1, 0x86, 0x93, 0x59, 0x5a,
+	0xf3, 0xa2, 0x4c, 0x2e, 0x2f, 0x60, 0x7e, 0xff, 0x3b, 0x2f, 0x33, 0xb6, 0x21, 0x01, 0x4c, 0x7f,
+	0x89, 0x84, 0x3a, 0x4b, 0x67, 0xe5, 0xc4, 0x78, 0xbc, 0xfc, 0xe7, 0x81, 0x7b, 0x77, 0x28, 0x4b,
+	0x49, 0x42, 0x70, 0x0b, 0x91, 0xe7, 0x92, 0x3a, 0xcb, 0xe9, 0x6a, 0xb1, 0xa6, 0x61, 0xab, 0x87,
+	0x2a, 0x0d, 0x23, 0x8c, 0x6e, 0x8a, 0xa6, 0x92, 0x71, 0x8b, 0x21, 0x5f, 0x37, 0x55, 0x25, 0xe9,
+	0xc4, 0xc6, 0xdf, 0x63, 0xa4, 0x79, 0x85, 0x21, 0xcf, 0x93, 0x34, 0x95, 0x74, 0x6a, 0xe3, 0x77,
+	0x18, 0x69, 0x5e, 0x61, 0xc8, 0x27, 0xe2, 0xf1, 0x51, 0xd2, 0x33, 0x1b, 0x7f, 0x8d, 0x91, 0xe6,
+	0x15, 0xa6, 0x78, 0xce, 0x33, 0x49, 0x5d, 0x2b, 0x8f, 0x51, 0xc7, 0xe3, 0x19, 0x79, 0x56, 0x88,
+	0x5c, 0xd2, 0x99, 0x8d, 0xbf, 0xc1, 0x48, 0xf3, 0x0a, 0x23, 0x9f, 0xc1, 0xab, 0x37, 0xeb, 0xb6,
+	0xc4, 0x5c, 0x29, 0x17, 0xa3, 0x2b, 0xeb, 0xb4, 0xb5, 0x9e, 0x60, 0x25, 0x7e, 0xfa, 0xd8, 0x8a,
+	0x9e, 0x55, 0xd4, 0x69, 0x27, 0xea, 0x4f, 0x14, 0x45, 0x57, 0xd1, 0xb7, 0x89, 0xfb, 0x61, 0x45,
+	0x61, 0x54, 0x14, 0x5d, 0x45, 0xb0, 0x8a, 0xc3, 0x8a, 0x1d, 0xfc, 0xf6, 0x0a, 0xa0, 0x1f, 0x34,
+	0x6e, 0xcb, 0x1f, 0x26, 0xd5, 0xb6, 0x4c, 0x63, 0x3c, 0x92, 0xd7, 0xe0, 0xfe, 0x3d, 0x64, 0x82,
+	0xd1, 0xc9, 0xd2, 0x59, 0xb9, 0x71, 0xfb, 0xf1, 0x65, 0x72, 0xe5, 0xa0, 0xd9, 0x8f, 0xdc, 0x34,
+	0x7d, 0x8b, 0xe9, 0x9b, 0xe6, 0x2d, 0x40, 0x3f, 0x7c, 0xd3, 0x74, 0x5b, 0xf3, 0x9d, 0x69, 0x2e,
+	0xd6, 0xaf, 0xba, 0x9b, 0xe8, 0x9d, 0x1e, 0x35, 0xd1, 0xef, 0xc5, 0xa9, 0xf6, 0xfd, 0xb1, 0xf9,
+	0xf4, 0x20, 0xa6, 0xe9, 0x59, 0x4c, 0x6f, 0xd4, 0x7e, 0xbf, 0x2b, 0x96, 0x8b, 0x0f, 0xda, 0x7f,
+	0xd9, 0xb7, 0x1f, 0x89, 0x9c, 0x55, 0x87, 0xcc, 0xfc, 0xa9, 0xaf, 0x70, 0x3e, 0xd8, 0x21, 0xcb,
+	0x63, 0x1c, 0xef, 0x03, 0x65, 0x73, 0xaa, 0xa7, 0xae, 0x3f, 0x96, 0xf7, 0xc7, 0x2a, 0x9f, 0x3f,
+	0x47, 0x3e, 0x56, 0xf9, 0xec, 0x84, 0xfc, 0xfe, 0x03, 0xcc, 0xf5, 0x4b, 0x90, 0x05, 0xcc, 0xf7,
+	0xd1, 0xf7, 0x68, 0xf7, 0x23, 0x0a, 0x5e, 0x10, 0x80, 0xd9, 0x36, 0xde, 0x5e, 0xdf, 0x7e, 0x0b,
+	0x1c, 0xe2, 0x83, 0x1b, 0xef, 0xee, 0xb6, 0x51, 0x30, 0x49, 0x66, 0xea, 0xaf, 0x6d, 0xf3, 0x3f,
+	0x00, 0x00, 0xff, 0xff, 0xa2, 0x4b, 0xe1, 0x77, 0xf5, 0x04, 0x00, 0x00,
+}
diff --git a/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/more_test_objects.proto b/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/more_test_objects.proto
new file mode 100644
index 000000000..43b440e2d
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/more_test_objects.proto
@@ -0,0 +1,57 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2015 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto3";
+
+package jsonpb;
+
+message Simple3 {
+  double dub = 1;
+}
+
+enum Numeral {
+  UNKNOWN = 0;
+  ARABIC = 1;
+  ROMAN = 2;
+}
+
+message Mappy {
+  map<int64, int32> nummy = 1;
+  map<string, string> strry = 2;
+  map<int32, Simple3> objjy = 3;
+  map<int64, string> buggy = 4;
+  map<bool, bool> booly = 5;
+  map<string, Numeral> enumy = 6;
+  map<int32, bool> s32booly = 7;
+  map<int64, bool> s64booly = 8;
+  map<uint32, bool> u32booly = 9;
+  map<uint64, bool> u64booly = 10;
+}
diff --git a/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/test_objects.pb.go b/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/test_objects.pb.go
new file mode 100644
index 000000000..a5dfcd269
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/test_objects.pb.go
@@ -0,0 +1,771 @@
+// Code generated by protoc-gen-go.
+// source: test_objects.proto
+// DO NOT EDIT!
+
+package jsonpb
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+import google_protobuf "github.com/golang/protobuf/ptypes/any"
+import google_protobuf1 "github.com/golang/protobuf/ptypes/duration"
+import google_protobuf2 "github.com/golang/protobuf/ptypes/struct"
+import google_protobuf3 "github.com/golang/protobuf/ptypes/timestamp"
+import google_protobuf4 "github.com/golang/protobuf/ptypes/wrappers"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+type Widget_Color int32
+
+const (
+	Widget_RED   Widget_Color = 0
+	Widget_GREEN Widget_Color = 1
+	Widget_BLUE  Widget_Color = 2
+)
+
+var Widget_Color_name = map[int32]string{
+	0: "RED",
+	1: "GREEN",
+	2: "BLUE",
+}
+var Widget_Color_value = map[string]int32{
+	"RED":   0,
+	"GREEN": 1,
+	"BLUE":  2,
+}
+
+func (x Widget_Color) Enum() *Widget_Color {
+	p := new(Widget_Color)
+	*p = x
+	return p
+}
+func (x Widget_Color) String() string {
+	return proto.EnumName(Widget_Color_name, int32(x))
+}
+func (x *Widget_Color) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(Widget_Color_value, data, "Widget_Color")
+	if err != nil {
+		return err
+	}
+	*x = Widget_Color(value)
+	return nil
+}
+func (Widget_Color) EnumDescriptor() ([]byte, []int) { return fileDescriptor1, []int{2, 0} }
+
+// Test message for holding primitive types.
+type Simple struct {
+	OBool            *bool    `protobuf:"varint,1,opt,name=o_bool,json=oBool" json:"o_bool,omitempty"`
+	OInt32           *int32   `protobuf:"varint,2,opt,name=o_int32,json=oInt32" json:"o_int32,omitempty"`
+	OInt64           *int64   `protobuf:"varint,3,opt,name=o_int64,json=oInt64" json:"o_int64,omitempty"`
+	OUint32          *uint32  `protobuf:"varint,4,opt,name=o_uint32,json=oUint32" json:"o_uint32,omitempty"`
+	OUint64          *uint64  `protobuf:"varint,5,opt,name=o_uint64,json=oUint64" json:"o_uint64,omitempty"`
+	OSint32          *int32   `protobuf:"zigzag32,6,opt,name=o_sint32,json=oSint32" json:"o_sint32,omitempty"`
+	OSint64          *int64   `protobuf:"zigzag64,7,opt,name=o_sint64,json=oSint64" json:"o_sint64,omitempty"`
+	OFloat           *float32 `protobuf:"fixed32,8,opt,name=o_float,json=oFloat" json:"o_float,omitempty"`
+	ODouble          *float64 `protobuf:"fixed64,9,opt,name=o_double,json=oDouble" json:"o_double,omitempty"`
+	OString          *string  `protobuf:"bytes,10,opt,name=o_string,json=oString" json:"o_string,omitempty"`
+	OBytes           []byte   `protobuf:"bytes,11,opt,name=o_bytes,json=oBytes" json:"o_bytes,omitempty"`
+	XXX_unrecognized []byte   `json:"-"`
+}
+
+func (m *Simple) Reset()                    { *m = Simple{} }
+func (m *Simple) String() string            { return proto.CompactTextString(m) }
+func (*Simple) ProtoMessage()               {}
+func (*Simple) Descriptor() ([]byte, []int) { return fileDescriptor1, []int{0} }
+
+func (m *Simple) GetOBool() bool {
+	if m != nil && m.OBool != nil {
+		return *m.OBool
+	}
+	return false
+}
+
+func (m *Simple) GetOInt32() int32 {
+	if m != nil && m.OInt32 != nil {
+		return *m.OInt32
+	}
+	return 0
+}
+
+func (m *Simple) GetOInt64() int64 {
+	if m != nil && m.OInt64 != nil {
+		return *m.OInt64
+	}
+	return 0
+}
+
+func (m *Simple) GetOUint32() uint32 {
+	if m != nil && m.OUint32 != nil {
+		return *m.OUint32
+	}
+	return 0
+}
+
+func (m *Simple) GetOUint64() uint64 {
+	if m != nil && m.OUint64 != nil {
+		return *m.OUint64
+	}
+	return 0
+}
+
+func (m *Simple) GetOSint32() int32 {
+	if m != nil && m.OSint32 != nil {
+		return *m.OSint32
+	}
+	return 0
+}
+
+func (m *Simple) GetOSint64() int64 {
+	if m != nil && m.OSint64 != nil {
+		return *m.OSint64
+	}
+	return 0
+}
+
+func (m *Simple) GetOFloat() float32 {
+	if m != nil && m.OFloat != nil {
+		return *m.OFloat
+	}
+	return 0
+}
+
+func (m *Simple) GetODouble() float64 {
+	if m != nil && m.ODouble != nil {
+		return *m.ODouble
+	}
+	return 0
+}
+
+func (m *Simple) GetOString() string {
+	if m != nil && m.OString != nil {
+		return *m.OString
+	}
+	return ""
+}
+
+func (m *Simple) GetOBytes() []byte {
+	if m != nil {
+		return m.OBytes
+	}
+	return nil
+}
+
+// Test message for holding repeated primitives.
+type Repeats struct {
+	RBool            []bool    `protobuf:"varint,1,rep,name=r_bool,json=rBool" json:"r_bool,omitempty"`
+	RInt32           []int32   `protobuf:"varint,2,rep,name=r_int32,json=rInt32" json:"r_int32,omitempty"`
+	RInt64           []int64   `protobuf:"varint,3,rep,name=r_int64,json=rInt64" json:"r_int64,omitempty"`
+	RUint32          []uint32  `protobuf:"varint,4,rep,name=r_uint32,json=rUint32" json:"r_uint32,omitempty"`
+	RUint64          []uint64  `protobuf:"varint,5,rep,name=r_uint64,json=rUint64" json:"r_uint64,omitempty"`
+	RSint32          []int32   `protobuf:"zigzag32,6,rep,name=r_sint32,json=rSint32" json:"r_sint32,omitempty"`
+	RSint64          []int64   `protobuf:"zigzag64,7,rep,name=r_sint64,json=rSint64" json:"r_sint64,omitempty"`
+	RFloat           []float32 `protobuf:"fixed32,8,rep,name=r_float,json=rFloat" json:"r_float,omitempty"`
+	RDouble          []float64 `protobuf:"fixed64,9,rep,name=r_double,json=rDouble" json:"r_double,omitempty"`
+	RString          []string  `protobuf:"bytes,10,rep,name=r_string,json=rString" json:"r_string,omitempty"`
+	RBytes           [][]byte  `protobuf:"bytes,11,rep,name=r_bytes,json=rBytes" json:"r_bytes,omitempty"`
+	XXX_unrecognized []byte    `json:"-"`
+}
+
+func (m *Repeats) Reset()                    { *m = Repeats{} }
+func (m *Repeats) String() string            { return proto.CompactTextString(m) }
+func (*Repeats) ProtoMessage()               {}
+func (*Repeats) Descriptor() ([]byte, []int) { return fileDescriptor1, []int{1} }
+
+func (m *Repeats) GetRBool() []bool {
+	if m != nil {
+		return m.RBool
+	}
+	return nil
+}
+
+func (m *Repeats) GetRInt32() []int32 {
+	if m != nil {
+		return m.RInt32
+	}
+	return nil
+}
+
+func (m *Repeats) GetRInt64() []int64 {
+	if m != nil {
+		return m.RInt64
+	}
+	return nil
+}
+
+func (m *Repeats) GetRUint32() []uint32 {
+	if m != nil {
+		return m.RUint32
+	}
+	return nil
+}
+
+func (m *Repeats) GetRUint64() []uint64 {
+	if m != nil {
+		return m.RUint64
+	}
+	return nil
+}
+
+func (m *Repeats) GetRSint32() []int32 {
+	if m != nil {
+		return m.RSint32
+	}
+	return nil
+}
+
+func (m *Repeats) GetRSint64() []int64 {
+	if m != nil {
+		return m.RSint64
+	}
+	return nil
+}
+
+func (m *Repeats) GetRFloat() []float32 {
+	if m != nil {
+		return m.RFloat
+	}
+	return nil
+}
+
+func (m *Repeats) GetRDouble() []float64 {
+	if m != nil {
+		return m.RDouble
+	}
+	return nil
+}
+
+func (m *Repeats) GetRString() []string {
+	if m != nil {
+		return m.RString
+	}
+	return nil
+}
+
+func (m *Repeats) GetRBytes() [][]byte {
+	if m != nil {
+		return m.RBytes
+	}
+	return nil
+}
+
+// Test message for holding enums and nested messages.
+type Widget struct {
+	Color            *Widget_Color  `protobuf:"varint,1,opt,name=color,enum=jsonpb.Widget_Color" json:"color,omitempty"`
+	RColor           []Widget_Color `protobuf:"varint,2,rep,name=r_color,json=rColor,enum=jsonpb.Widget_Color" json:"r_color,omitempty"`
+	Simple           *Simple        `protobuf:"bytes,10,opt,name=simple" json:"simple,omitempty"`
+	RSimple          []*Simple      `protobuf:"bytes,11,rep,name=r_simple,json=rSimple" json:"r_simple,omitempty"`
+	Repeats          *Repeats       `protobuf:"bytes,20,opt,name=repeats" json:"repeats,omitempty"`
+	RRepeats         []*Repeats     `protobuf:"bytes,21,rep,name=r_repeats,json=rRepeats" json:"r_repeats,omitempty"`
+	XXX_unrecognized []byte         `json:"-"`
+}
+
+func (m *Widget) Reset()                    { *m = Widget{} }
+func (m *Widget) String() string            { return proto.CompactTextString(m) }
+func (*Widget) ProtoMessage()               {}
+func (*Widget) Descriptor() ([]byte, []int) { return fileDescriptor1, []int{2} }
+
+func (m *Widget) GetColor() Widget_Color {
+	if m != nil && m.Color != nil {
+		return *m.Color
+	}
+	return Widget_RED
+}
+
+func (m *Widget) GetRColor() []Widget_Color {
+	if m != nil {
+		return m.RColor
+	}
+	return nil
+}
+
+func (m *Widget) GetSimple() *Simple {
+	if m != nil {
+		return m.Simple
+	}
+	return nil
+}
+
+func (m *Widget) GetRSimple() []*Simple {
+	if m != nil {
+		return m.RSimple
+	}
+	return nil
+}
+
+func (m *Widget) GetRepeats() *Repeats {
+	if m != nil {
+		return m.Repeats
+	}
+	return nil
+}
+
+func (m *Widget) GetRRepeats() []*Repeats {
+	if m != nil {
+		return m.RRepeats
+	}
+	return nil
+}
+
+type Maps struct {
+	MInt64Str        map[int64]string `protobuf:"bytes,1,rep,name=m_int64_str,json=mInt64Str" json:"m_int64_str,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	MBoolSimple      map[bool]*Simple `protobuf:"bytes,2,rep,name=m_bool_simple,json=mBoolSimple" json:"m_bool_simple,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	XXX_unrecognized []byte           `json:"-"`
+}
+
+func (m *Maps) Reset()                    { *m = Maps{} }
+func (m *Maps) String() string            { return proto.CompactTextString(m) }
+func (*Maps) ProtoMessage()               {}
+func (*Maps) Descriptor() ([]byte, []int) { return fileDescriptor1, []int{3} }
+
+func (m *Maps) GetMInt64Str() map[int64]string {
+	if m != nil {
+		return m.MInt64Str
+	}
+	return nil
+}
+
+func (m *Maps) GetMBoolSimple() map[bool]*Simple {
+	if m != nil {
+		return m.MBoolSimple
+	}
+	return nil
+}
+
+type MsgWithOneof struct {
+	// Types that are valid to be assigned to Union:
+	//	*MsgWithOneof_Title
+	//	*MsgWithOneof_Salary
+	//	*MsgWithOneof_Country
+	//	*MsgWithOneof_HomeAddress
+	Union            isMsgWithOneof_Union `protobuf_oneof:"union"`
+	XXX_unrecognized []byte               `json:"-"`
+}
+
+func (m *MsgWithOneof) Reset()                    { *m = MsgWithOneof{} }
+func (m *MsgWithOneof) String() string            { return proto.CompactTextString(m) }
+func (*MsgWithOneof) ProtoMessage()               {}
+func (*MsgWithOneof) Descriptor() ([]byte, []int) { return fileDescriptor1, []int{4} }
+
+type isMsgWithOneof_Union interface {
+	isMsgWithOneof_Union()
+}
+
+type MsgWithOneof_Title struct {
+	Title string `protobuf:"bytes,1,opt,name=title,oneof"`
+}
+type MsgWithOneof_Salary struct {
+	Salary int64 `protobuf:"varint,2,opt,name=salary,oneof"`
+}
+type MsgWithOneof_Country struct {
+	Country string `protobuf:"bytes,3,opt,name=Country,oneof"`
+}
+type MsgWithOneof_HomeAddress struct {
+	HomeAddress string `protobuf:"bytes,4,opt,name=home_address,json=homeAddress,oneof"`
+}
+
+func (*MsgWithOneof_Title) isMsgWithOneof_Union()       {}
+func (*MsgWithOneof_Salary) isMsgWithOneof_Union()      {}
+func (*MsgWithOneof_Country) isMsgWithOneof_Union()     {}
+func (*MsgWithOneof_HomeAddress) isMsgWithOneof_Union() {}
+
+func (m *MsgWithOneof) GetUnion() isMsgWithOneof_Union {
+	if m != nil {
+		return m.Union
+	}
+	return nil
+}
+
+func (m *MsgWithOneof) GetTitle() string {
+	if x, ok := m.GetUnion().(*MsgWithOneof_Title); ok {
+		return x.Title
+	}
+	return ""
+}
+
+func (m *MsgWithOneof) GetSalary() int64 {
+	if x, ok := m.GetUnion().(*MsgWithOneof_Salary); ok {
+		return x.Salary
+	}
+	return 0
+}
+
+func (m *MsgWithOneof) GetCountry() string {
+	if x, ok := m.GetUnion().(*MsgWithOneof_Country); ok {
+		return x.Country
+	}
+	return ""
+}
+
+func (m *MsgWithOneof) GetHomeAddress() string {
+	if x, ok := m.GetUnion().(*MsgWithOneof_HomeAddress); ok {
+		return x.HomeAddress
+	}
+	return ""
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*MsgWithOneof) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _MsgWithOneof_OneofMarshaler, _MsgWithOneof_OneofUnmarshaler, _MsgWithOneof_OneofSizer, []interface{}{
+		(*MsgWithOneof_Title)(nil),
+		(*MsgWithOneof_Salary)(nil),
+		(*MsgWithOneof_Country)(nil),
+		(*MsgWithOneof_HomeAddress)(nil),
+	}
+}
+
+func _MsgWithOneof_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*MsgWithOneof)
+	// union
+	switch x := m.Union.(type) {
+	case *MsgWithOneof_Title:
+		b.EncodeVarint(1<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.Title)
+	case *MsgWithOneof_Salary:
+		b.EncodeVarint(2<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.Salary))
+	case *MsgWithOneof_Country:
+		b.EncodeVarint(3<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.Country)
+	case *MsgWithOneof_HomeAddress:
+		b.EncodeVarint(4<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.HomeAddress)
+	case nil:
+	default:
+		return fmt.Errorf("MsgWithOneof.Union has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _MsgWithOneof_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*MsgWithOneof)
+	switch tag {
+	case 1: // union.title
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Union = &MsgWithOneof_Title{x}
+		return true, err
+	case 2: // union.salary
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &MsgWithOneof_Salary{int64(x)}
+		return true, err
+	case 3: // union.Country
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Union = &MsgWithOneof_Country{x}
+		return true, err
+	case 4: // union.home_address
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Union = &MsgWithOneof_HomeAddress{x}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _MsgWithOneof_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*MsgWithOneof)
+	// union
+	switch x := m.Union.(type) {
+	case *MsgWithOneof_Title:
+		n += proto.SizeVarint(1<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.Title)))
+		n += len(x.Title)
+	case *MsgWithOneof_Salary:
+		n += proto.SizeVarint(2<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.Salary))
+	case *MsgWithOneof_Country:
+		n += proto.SizeVarint(3<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.Country)))
+		n += len(x.Country)
+	case *MsgWithOneof_HomeAddress:
+		n += proto.SizeVarint(4<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.HomeAddress)))
+		n += len(x.HomeAddress)
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+type Real struct {
+	Value                        *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *Real) Reset()                    { *m = Real{} }
+func (m *Real) String() string            { return proto.CompactTextString(m) }
+func (*Real) ProtoMessage()               {}
+func (*Real) Descriptor() ([]byte, []int) { return fileDescriptor1, []int{5} }
+
+var extRange_Real = []proto.ExtensionRange{
+	{100, 536870911},
+}
+
+func (*Real) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_Real
+}
+
+func (m *Real) GetValue() float64 {
+	if m != nil && m.Value != nil {
+		return *m.Value
+	}
+	return 0
+}
+
+type Complex struct {
+	Imaginary                    *float64 `protobuf:"fixed64,1,opt,name=imaginary" json:"imaginary,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *Complex) Reset()                    { *m = Complex{} }
+func (m *Complex) String() string            { return proto.CompactTextString(m) }
+func (*Complex) ProtoMessage()               {}
+func (*Complex) Descriptor() ([]byte, []int) { return fileDescriptor1, []int{6} }
+
+var extRange_Complex = []proto.ExtensionRange{
+	{100, 536870911},
+}
+
+func (*Complex) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_Complex
+}
+
+func (m *Complex) GetImaginary() float64 {
+	if m != nil && m.Imaginary != nil {
+		return *m.Imaginary
+	}
+	return 0
+}
+
+var E_Complex_RealExtension = &proto.ExtensionDesc{
+	ExtendedType:  (*Real)(nil),
+	ExtensionType: (*Complex)(nil),
+	Field:         123,
+	Name:          "jsonpb.Complex.real_extension",
+	Tag:           "bytes,123,opt,name=real_extension,json=realExtension",
+	Filename:      "test_objects.proto",
+}
+
+type KnownTypes struct {
+	An               *google_protobuf.Any          `protobuf:"bytes,14,opt,name=an" json:"an,omitempty"`
+	Dur              *google_protobuf1.Duration    `protobuf:"bytes,1,opt,name=dur" json:"dur,omitempty"`
+	St               *google_protobuf2.Struct      `protobuf:"bytes,12,opt,name=st" json:"st,omitempty"`
+	Ts               *google_protobuf3.Timestamp   `protobuf:"bytes,2,opt,name=ts" json:"ts,omitempty"`
+	Dbl              *google_protobuf4.DoubleValue `protobuf:"bytes,3,opt,name=dbl" json:"dbl,omitempty"`
+	Flt              *google_protobuf4.FloatValue  `protobuf:"bytes,4,opt,name=flt" json:"flt,omitempty"`
+	I64              *google_protobuf4.Int64Value  `protobuf:"bytes,5,opt,name=i64" json:"i64,omitempty"`
+	U64              *google_protobuf4.UInt64Value `protobuf:"bytes,6,opt,name=u64" json:"u64,omitempty"`
+	I32              *google_protobuf4.Int32Value  `protobuf:"bytes,7,opt,name=i32" json:"i32,omitempty"`
+	U32              *google_protobuf4.UInt32Value `protobuf:"bytes,8,opt,name=u32" json:"u32,omitempty"`
+	Bool             *google_protobuf4.BoolValue   `protobuf:"bytes,9,opt,name=bool" json:"bool,omitempty"`
+	Str              *google_protobuf4.StringValue `protobuf:"bytes,10,opt,name=str" json:"str,omitempty"`
+	Bytes            *google_protobuf4.BytesValue  `protobuf:"bytes,11,opt,name=bytes" json:"bytes,omitempty"`
+	XXX_unrecognized []byte                        `json:"-"`
+}
+
+func (m *KnownTypes) Reset()                    { *m = KnownTypes{} }
+func (m *KnownTypes) String() string            { return proto.CompactTextString(m) }
+func (*KnownTypes) ProtoMessage()               {}
+func (*KnownTypes) Descriptor() ([]byte, []int) { return fileDescriptor1, []int{7} }
+
+func (m *KnownTypes) GetAn() *google_protobuf.Any {
+	if m != nil {
+		return m.An
+	}
+	return nil
+}
+
+func (m *KnownTypes) GetDur() *google_protobuf1.Duration {
+	if m != nil {
+		return m.Dur
+	}
+	return nil
+}
+
+func (m *KnownTypes) GetSt() *google_protobuf2.Struct {
+	if m != nil {
+		return m.St
+	}
+	return nil
+}
+
+func (m *KnownTypes) GetTs() *google_protobuf3.Timestamp {
+	if m != nil {
+		return m.Ts
+	}
+	return nil
+}
+
+func (m *KnownTypes) GetDbl() *google_protobuf4.DoubleValue {
+	if m != nil {
+		return m.Dbl
+	}
+	return nil
+}
+
+func (m *KnownTypes) GetFlt() *google_protobuf4.FloatValue {
+	if m != nil {
+		return m.Flt
+	}
+	return nil
+}
+
+func (m *KnownTypes) GetI64() *google_protobuf4.Int64Value {
+	if m != nil {
+		return m.I64
+	}
+	return nil
+}
+
+func (m *KnownTypes) GetU64() *google_protobuf4.UInt64Value {
+	if m != nil {
+		return m.U64
+	}
+	return nil
+}
+
+func (m *KnownTypes) GetI32() *google_protobuf4.Int32Value {
+	if m != nil {
+		return m.I32
+	}
+	return nil
+}
+
+func (m *KnownTypes) GetU32() *google_protobuf4.UInt32Value {
+	if m != nil {
+		return m.U32
+	}
+	return nil
+}
+
+func (m *KnownTypes) GetBool() *google_protobuf4.BoolValue {
+	if m != nil {
+		return m.Bool
+	}
+	return nil
+}
+
+func (m *KnownTypes) GetStr() *google_protobuf4.StringValue {
+	if m != nil {
+		return m.Str
+	}
+	return nil
+}
+
+func (m *KnownTypes) GetBytes() *google_protobuf4.BytesValue {
+	if m != nil {
+		return m.Bytes
+	}
+	return nil
+}
+
+var E_Name = &proto.ExtensionDesc{
+	ExtendedType:  (*Real)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         124,
+	Name:          "jsonpb.name",
+	Tag:           "bytes,124,opt,name=name",
+	Filename:      "test_objects.proto",
+}
+
+func init() {
+	proto.RegisterType((*Simple)(nil), "jsonpb.Simple")
+	proto.RegisterType((*Repeats)(nil), "jsonpb.Repeats")
+	proto.RegisterType((*Widget)(nil), "jsonpb.Widget")
+	proto.RegisterType((*Maps)(nil), "jsonpb.Maps")
+	proto.RegisterType((*MsgWithOneof)(nil), "jsonpb.MsgWithOneof")
+	proto.RegisterType((*Real)(nil), "jsonpb.Real")
+	proto.RegisterType((*Complex)(nil), "jsonpb.Complex")
+	proto.RegisterType((*KnownTypes)(nil), "jsonpb.KnownTypes")
+	proto.RegisterEnum("jsonpb.Widget_Color", Widget_Color_name, Widget_Color_value)
+	proto.RegisterExtension(E_Complex_RealExtension)
+	proto.RegisterExtension(E_Name)
+}
+
+func init() { proto.RegisterFile("test_objects.proto", fileDescriptor1) }
+
+var fileDescriptor1 = []byte{
+	// 1054 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x74, 0x95, 0xdf, 0x72, 0xdb, 0x44,
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+	0xf7, 0x88, 0x2b, 0xc6, 0x13, 0x21, 0x12, 0xcf, 0xf2, 0xad, 0xa0, 0xc9, 0xea, 0xe2, 0x58, 0x88,
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+	0xf0, 0xea, 0xbe, 0x15, 0xd4, 0xf2, 0x54, 0x51, 0xa5, 0x4c, 0x95, 0xeb, 0x5b, 0xc1, 0xfb, 0xac,
+	0x21, 0xce, 0x6e, 0x54, 0x29, 0x53, 0xd5, 0xf0, 0xad, 0x80, 0xe6, 0xa9, 0xe1, 0xc0, 0x6c, 0xe2,
+	0x32, 0x11, 0x91, 0xf6, 0x9a, 0xbe, 0x15, 0xd8, 0xcc, 0x15, 0xdf, 0x43, 0x64, 0x6a, 0xa6, 0x22,
+	0x9b, 0x24, 0xdc, 0x6b, 0xf9, 0x56, 0x60, 0xb1, 0x86, 0x38, 0xc1, 0x30, 0xb7, 0xd3, 0x32, 0x4e,
+	0x67, 0x1e, 0xf1, 0xad, 0xa0, 0x05, 0x76, 0x18, 0x1a, 0xbb, 0xc9, 0x52, 0x73, 0xe5, 0xb5, 0x7d,
+	0x2b, 0xd8, 0x66, 0xae, 0x38, 0x86, 0xa8, 0xf7, 0xaf, 0x4d, 0x1a, 0x8c, 0x2f, 0x78, 0xa4, 0x15,
+	0x80, 0x92, 0x05, 0x28, 0x07, 0x40, 0xc9, 0x02, 0x94, 0x2c, 0x41, 0x39, 0x00, 0x4a, 0x96, 0xa0,
+	0x64, 0x09, 0xca, 0x01, 0x50, 0xb2, 0x04, 0x25, 0x2b, 0x50, 0x0e, 0x80, 0x92, 0x15, 0x28, 0x59,
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+	0x88, 0x1d, 0xa5, 0xde, 0x2e, 0x96, 0xee, 0xf5, 0xcd, 0x28, 0xe8, 0x17, 0xa3, 0xa0, 0x7f, 0x94,
+	0x2e, 0x99, 0x1d, 0xa5, 0xf4, 0x4b, 0xe2, 0x4c, 0x33, 0x73, 0x4b, 0xdb, 0xe1, 0xfe, 0x9a, 0xec,
+	0x24, 0x1f, 0x48, 0x0c, 0x54, 0xf4, 0x73, 0x62, 0x2b, 0xed, 0x6d, 0xa3, 0xf6, 0xfe, 0x9a, 0xf6,
+	0x0c, 0x87, 0x13, 0xb3, 0x15, 0xdc, 0x7e, 0x5b, 0xab, 0xfc, 0x7c, 0xbb, 0x6b, 0xc2, 0x97, 0xc5,
+	0x9c, 0x62, 0xb6, 0x56, 0xb4, 0x4f, 0x9c, 0xe9, 0x24, 0xc1, 0xd3, 0x69, 0x87, 0x07, 0xeb, 0x3b,
+	0xc0, 0xe7, 0xe8, 0x57, 0x80, 0xcc, 0x40, 0x48, 0x1f, 0x13, 0xe7, 0x32, 0xd1, 0x78, 0x58, 0x70,
+	0x35, 0x56, 0xf5, 0xf8, 0xb0, 0xe5, 0xf2, 0xcb, 0x44, 0x83, 0x3c, 0xce, 0x07, 0xce, 0x5d, 0x72,
+	0x6c, 0xf6, 0x5c, 0x1e, 0x0f, 0x07, 0xb0, 0x9b, 0x6c, 0x38, 0xc0, 0x21, 0x74, 0xd7, 0x6e, 0xce,
+	0x6f, 0xea, 0xb3, 0xe1, 0x00, 0xed, 0x0f, 0x43, 0x9c, 0x4c, 0x1b, 0xec, 0x0f, 0xc3, 0xc2, 0xfe,
+	0x30, 0x44, 0xfb, 0xc3, 0x10, 0xc7, 0xd5, 0x26, 0xfb, 0x52, 0x9f, 0xa1, 0xbe, 0x86, 0xc3, 0xa6,
+	0xb5, 0x01, 0x25, 0xdc, 0x36, 0x23, 0x47, 0x1d, 0xf8, 0xc3, 0xbb, 0x41, 0x36, 0xf8, 0x9b, 0x07,
+	0x3c, 0xf7, 0x57, 0x5a, 0xd2, 0xaf, 0x49, 0xbd, 0x9a, 0x78, 0x77, 0x7d, 0x00, 0x3e, 0xec, 0xa6,
+	0xc0, 0x28, 0x9f, 0xfa, 0xa4, 0x96, 0x46, 0x73, 0xbe, 0xd2, 0xa2, 0x7f, 0xe2, 0x5b, 0x80, 0x99,
+	0x77, 0x01, 0x00, 0x00, 0xff, 0xff, 0x7e, 0xe7, 0x47, 0x52, 0x0e, 0x09, 0x00, 0x00,
+}
diff --git a/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/test_objects.proto b/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/test_objects.proto
new file mode 100644
index 000000000..d1934a074
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/jsonpb/jsonpb_test_proto/test_objects.proto
@@ -0,0 +1,135 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2015 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto2";
+
+import "google/protobuf/any.proto";
+import "google/protobuf/duration.proto";
+import "google/protobuf/struct.proto";
+import "google/protobuf/timestamp.proto";
+import "google/protobuf/wrappers.proto";
+
+package jsonpb;
+
+// Test message for holding primitive types.
+message Simple {
+  optional bool o_bool = 1;
+  optional int32 o_int32 = 2;
+  optional int64 o_int64 = 3;
+  optional uint32 o_uint32 = 4;
+  optional uint64 o_uint64 = 5;
+  optional sint32 o_sint32 = 6;
+  optional sint64 o_sint64 = 7;
+  optional float o_float = 8;
+  optional double o_double = 9;
+  optional string o_string = 10;
+  optional bytes o_bytes = 11;
+}
+
+// Test message for holding repeated primitives.
+message Repeats {
+  repeated bool r_bool = 1;
+  repeated int32 r_int32 = 2;
+  repeated int64 r_int64 = 3;
+  repeated uint32 r_uint32 = 4;
+  repeated uint64 r_uint64 = 5;
+  repeated sint32 r_sint32 = 6;
+  repeated sint64 r_sint64 = 7;
+  repeated float r_float = 8;
+  repeated double r_double = 9;
+  repeated string r_string = 10;
+  repeated bytes r_bytes = 11;
+}
+
+// Test message for holding enums and nested messages.
+message Widget {
+  enum Color {
+    RED = 0;
+    GREEN = 1;
+    BLUE = 2;
+  };
+  optional Color color = 1;
+  repeated Color r_color = 2;
+
+  optional Simple simple = 10;
+  repeated Simple r_simple = 11;
+
+  optional Repeats repeats = 20;
+  repeated Repeats r_repeats = 21;
+}
+
+message Maps {
+  map<int64, string> m_int64_str = 1;
+  map<bool, Simple> m_bool_simple = 2;
+}
+
+message MsgWithOneof {
+  oneof union {
+    string title = 1;
+    int64 salary = 2;
+    string Country = 3;
+    string home_address = 4;
+  }
+}
+
+message Real {
+  optional double value = 1;
+  extensions 100 to max;
+}
+
+extend Real {
+  optional string name = 124;
+}
+
+message Complex {
+  extend Real {
+    optional Complex real_extension = 123;
+  }
+  optional double imaginary = 1;
+  extensions 100 to max;
+}
+
+message KnownTypes {
+  optional google.protobuf.Any an = 14;
+  optional google.protobuf.Duration dur = 1;
+  optional google.protobuf.Struct st = 12;
+  optional google.protobuf.Timestamp ts = 2;
+
+  optional google.protobuf.DoubleValue dbl = 3;
+  optional google.protobuf.FloatValue flt = 4;
+  optional google.protobuf.Int64Value i64 = 5;
+  optional google.protobuf.UInt64Value u64 = 6;
+  optional google.protobuf.Int32Value i32 = 7;
+  optional google.protobuf.UInt32Value u32 = 8;
+  optional google.protobuf.BoolValue bool = 9;
+  optional google.protobuf.StringValue str = 10;
+  optional google.protobuf.BytesValue bytes = 11;
+}
diff --git a/vendor/github.com/golang/protobuf/proto/Makefile b/vendor/github.com/golang/protobuf/proto/Makefile
new file mode 100644
index 000000000..e2e0651a9
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/Makefile
@@ -0,0 +1,43 @@
+# Go support for Protocol Buffers - Google's data interchange format
+#
+# Copyright 2010 The Go Authors.  All rights reserved.
+# https://github.com/golang/protobuf
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+install:
+	go install
+
+test: install generate-test-pbs
+	go test
+
+
+generate-test-pbs:
+	make install
+	make -C testdata
+	protoc --go_out=Mtestdata/test.proto=github.com/golang/protobuf/proto/testdata,Mgoogle/protobuf/any.proto=github.com/golang/protobuf/ptypes/any:. proto3_proto/proto3.proto
+	make
diff --git a/vendor/github.com/golang/protobuf/proto/all_test.go b/vendor/github.com/golang/protobuf/proto/all_test.go
new file mode 100644
index 000000000..41451a407
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/all_test.go
@@ -0,0 +1,2278 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"math"
+	"math/rand"
+	"reflect"
+	"runtime/debug"
+	"strings"
+	"testing"
+	"time"
+
+	. "github.com/golang/protobuf/proto"
+	. "github.com/golang/protobuf/proto/testdata"
+)
+
+var globalO *Buffer
+
+func old() *Buffer {
+	if globalO == nil {
+		globalO = NewBuffer(nil)
+	}
+	globalO.Reset()
+	return globalO
+}
+
+func equalbytes(b1, b2 []byte, t *testing.T) {
+	if len(b1) != len(b2) {
+		t.Errorf("wrong lengths: 2*%d != %d", len(b1), len(b2))
+		return
+	}
+	for i := 0; i < len(b1); i++ {
+		if b1[i] != b2[i] {
+			t.Errorf("bad byte[%d]:%x %x: %s %s", i, b1[i], b2[i], b1, b2)
+		}
+	}
+}
+
+func initGoTestField() *GoTestField {
+	f := new(GoTestField)
+	f.Label = String("label")
+	f.Type = String("type")
+	return f
+}
+
+// These are all structurally equivalent but the tag numbers differ.
+// (It's remarkable that required, optional, and repeated all have
+// 8 letters.)
+func initGoTest_RequiredGroup() *GoTest_RequiredGroup {
+	return &GoTest_RequiredGroup{
+		RequiredField: String("required"),
+	}
+}
+
+func initGoTest_OptionalGroup() *GoTest_OptionalGroup {
+	return &GoTest_OptionalGroup{
+		RequiredField: String("optional"),
+	}
+}
+
+func initGoTest_RepeatedGroup() *GoTest_RepeatedGroup {
+	return &GoTest_RepeatedGroup{
+		RequiredField: String("repeated"),
+	}
+}
+
+func initGoTest(setdefaults bool) *GoTest {
+	pb := new(GoTest)
+	if setdefaults {
+		pb.F_BoolDefaulted = Bool(Default_GoTest_F_BoolDefaulted)
+		pb.F_Int32Defaulted = Int32(Default_GoTest_F_Int32Defaulted)
+		pb.F_Int64Defaulted = Int64(Default_GoTest_F_Int64Defaulted)
+		pb.F_Fixed32Defaulted = Uint32(Default_GoTest_F_Fixed32Defaulted)
+		pb.F_Fixed64Defaulted = Uint64(Default_GoTest_F_Fixed64Defaulted)
+		pb.F_Uint32Defaulted = Uint32(Default_GoTest_F_Uint32Defaulted)
+		pb.F_Uint64Defaulted = Uint64(Default_GoTest_F_Uint64Defaulted)
+		pb.F_FloatDefaulted = Float32(Default_GoTest_F_FloatDefaulted)
+		pb.F_DoubleDefaulted = Float64(Default_GoTest_F_DoubleDefaulted)
+		pb.F_StringDefaulted = String(Default_GoTest_F_StringDefaulted)
+		pb.F_BytesDefaulted = Default_GoTest_F_BytesDefaulted
+		pb.F_Sint32Defaulted = Int32(Default_GoTest_F_Sint32Defaulted)
+		pb.F_Sint64Defaulted = Int64(Default_GoTest_F_Sint64Defaulted)
+	}
+
+	pb.Kind = GoTest_TIME.Enum()
+	pb.RequiredField = initGoTestField()
+	pb.F_BoolRequired = Bool(true)
+	pb.F_Int32Required = Int32(3)
+	pb.F_Int64Required = Int64(6)
+	pb.F_Fixed32Required = Uint32(32)
+	pb.F_Fixed64Required = Uint64(64)
+	pb.F_Uint32Required = Uint32(3232)
+	pb.F_Uint64Required = Uint64(6464)
+	pb.F_FloatRequired = Float32(3232)
+	pb.F_DoubleRequired = Float64(6464)
+	pb.F_StringRequired = String("string")
+	pb.F_BytesRequired = []byte("bytes")
+	pb.F_Sint32Required = Int32(-32)
+	pb.F_Sint64Required = Int64(-64)
+	pb.Requiredgroup = initGoTest_RequiredGroup()
+
+	return pb
+}
+
+func fail(msg string, b *bytes.Buffer, s string, t *testing.T) {
+	data := b.Bytes()
+	ld := len(data)
+	ls := len(s) / 2
+
+	fmt.Printf("fail %s ld=%d ls=%d\n", msg, ld, ls)
+
+	// find the interesting spot - n
+	n := ls
+	if ld < ls {
+		n = ld
+	}
+	j := 0
+	for i := 0; i < n; i++ {
+		bs := hex(s[j])*16 + hex(s[j+1])
+		j += 2
+		if data[i] == bs {
+			continue
+		}
+		n = i
+		break
+	}
+	l := n - 10
+	if l < 0 {
+		l = 0
+	}
+	h := n + 10
+
+	// find the interesting spot - n
+	fmt.Printf("is[%d]:", l)
+	for i := l; i < h; i++ {
+		if i >= ld {
+			fmt.Printf(" --")
+			continue
+		}
+		fmt.Printf(" %.2x", data[i])
+	}
+	fmt.Printf("\n")
+
+	fmt.Printf("sb[%d]:", l)
+	for i := l; i < h; i++ {
+		if i >= ls {
+			fmt.Printf(" --")
+			continue
+		}
+		bs := hex(s[j])*16 + hex(s[j+1])
+		j += 2
+		fmt.Printf(" %.2x", bs)
+	}
+	fmt.Printf("\n")
+
+	t.Fail()
+
+	//	t.Errorf("%s: \ngood: %s\nbad: %x", msg, s, b.Bytes())
+	// Print the output in a partially-decoded format; can
+	// be helpful when updating the test.  It produces the output
+	// that is pasted, with minor edits, into the argument to verify().
+	//	data := b.Bytes()
+	//	nesting := 0
+	//	for b.Len() > 0 {
+	//		start := len(data) - b.Len()
+	//		var u uint64
+	//		u, err := DecodeVarint(b)
+	//		if err != nil {
+	//			fmt.Printf("decode error on varint:", err)
+	//			return
+	//		}
+	//		wire := u & 0x7
+	//		tag := u >> 3
+	//		switch wire {
+	//		case WireVarint:
+	//			v, err := DecodeVarint(b)
+	//			if err != nil {
+	//				fmt.Printf("decode error on varint:", err)
+	//				return
+	//			}
+	//			fmt.Printf("\t\t\"%x\"  // field %d, encoding %d, value %d\n",
+	//				data[start:len(data)-b.Len()], tag, wire, v)
+	//		case WireFixed32:
+	//			v, err := DecodeFixed32(b)
+	//			if err != nil {
+	//				fmt.Printf("decode error on fixed32:", err)
+	//				return
+	//			}
+	//			fmt.Printf("\t\t\"%x\"  // field %d, encoding %d, value %d\n",
+	//				data[start:len(data)-b.Len()], tag, wire, v)
+	//		case WireFixed64:
+	//			v, err := DecodeFixed64(b)
+	//			if err != nil {
+	//				fmt.Printf("decode error on fixed64:", err)
+	//				return
+	//			}
+	//			fmt.Printf("\t\t\"%x\"  // field %d, encoding %d, value %d\n",
+	//				data[start:len(data)-b.Len()], tag, wire, v)
+	//		case WireBytes:
+	//			nb, err := DecodeVarint(b)
+	//			if err != nil {
+	//				fmt.Printf("decode error on bytes:", err)
+	//				return
+	//			}
+	//			after_tag := len(data) - b.Len()
+	//			str := make([]byte, nb)
+	//			_, err = b.Read(str)
+	//			if err != nil {
+	//				fmt.Printf("decode error on bytes:", err)
+	//				return
+	//			}
+	//			fmt.Printf("\t\t\"%x\" \"%x\"  // field %d, encoding %d (FIELD)\n",
+	//				data[start:after_tag], str, tag, wire)
+	//		case WireStartGroup:
+	//			nesting++
+	//			fmt.Printf("\t\t\"%x\"\t\t// start group field %d level %d\n",
+	//				data[start:len(data)-b.Len()], tag, nesting)
+	//		case WireEndGroup:
+	//			fmt.Printf("\t\t\"%x\"\t\t// end group field %d level %d\n",
+	//				data[start:len(data)-b.Len()], tag, nesting)
+	//			nesting--
+	//		default:
+	//			fmt.Printf("unrecognized wire type %d\n", wire)
+	//			return
+	//		}
+	//	}
+}
+
+func hex(c uint8) uint8 {
+	if '0' <= c && c <= '9' {
+		return c - '0'
+	}
+	if 'a' <= c && c <= 'f' {
+		return 10 + c - 'a'
+	}
+	if 'A' <= c && c <= 'F' {
+		return 10 + c - 'A'
+	}
+	return 0
+}
+
+func equal(b []byte, s string, t *testing.T) bool {
+	if 2*len(b) != len(s) {
+		//		fail(fmt.Sprintf("wrong lengths: 2*%d != %d", len(b), len(s)), b, s, t)
+		fmt.Printf("wrong lengths: 2*%d != %d\n", len(b), len(s))
+		return false
+	}
+	for i, j := 0, 0; i < len(b); i, j = i+1, j+2 {
+		x := hex(s[j])*16 + hex(s[j+1])
+		if b[i] != x {
+			//			fail(fmt.Sprintf("bad byte[%d]:%x %x", i, b[i], x), b, s, t)
+			fmt.Printf("bad byte[%d]:%x %x", i, b[i], x)
+			return false
+		}
+	}
+	return true
+}
+
+func overify(t *testing.T, pb *GoTest, expected string) {
+	o := old()
+	err := o.Marshal(pb)
+	if err != nil {
+		fmt.Printf("overify marshal-1 err = %v", err)
+		o.DebugPrint("", o.Bytes())
+		t.Fatalf("expected = %s", expected)
+	}
+	if !equal(o.Bytes(), expected, t) {
+		o.DebugPrint("overify neq 1", o.Bytes())
+		t.Fatalf("expected = %s", expected)
+	}
+
+	// Now test Unmarshal by recreating the original buffer.
+	pbd := new(GoTest)
+	err = o.Unmarshal(pbd)
+	if err != nil {
+		t.Fatalf("overify unmarshal err = %v", err)
+		o.DebugPrint("", o.Bytes())
+		t.Fatalf("string = %s", expected)
+	}
+	o.Reset()
+	err = o.Marshal(pbd)
+	if err != nil {
+		t.Errorf("overify marshal-2 err = %v", err)
+		o.DebugPrint("", o.Bytes())
+		t.Fatalf("string = %s", expected)
+	}
+	if !equal(o.Bytes(), expected, t) {
+		o.DebugPrint("overify neq 2", o.Bytes())
+		t.Fatalf("string = %s", expected)
+	}
+}
+
+// Simple tests for numeric encode/decode primitives (varint, etc.)
+func TestNumericPrimitives(t *testing.T) {
+	for i := uint64(0); i < 1e6; i += 111 {
+		o := old()
+		if o.EncodeVarint(i) != nil {
+			t.Error("EncodeVarint")
+			break
+		}
+		x, e := o.DecodeVarint()
+		if e != nil {
+			t.Fatal("DecodeVarint")
+		}
+		if x != i {
+			t.Fatal("varint decode fail:", i, x)
+		}
+
+		o = old()
+		if o.EncodeFixed32(i) != nil {
+			t.Fatal("encFixed32")
+		}
+		x, e = o.DecodeFixed32()
+		if e != nil {
+			t.Fatal("decFixed32")
+		}
+		if x != i {
+			t.Fatal("fixed32 decode fail:", i, x)
+		}
+
+		o = old()
+		if o.EncodeFixed64(i*1234567) != nil {
+			t.Error("encFixed64")
+			break
+		}
+		x, e = o.DecodeFixed64()
+		if e != nil {
+			t.Error("decFixed64")
+			break
+		}
+		if x != i*1234567 {
+			t.Error("fixed64 decode fail:", i*1234567, x)
+			break
+		}
+
+		o = old()
+		i32 := int32(i - 12345)
+		if o.EncodeZigzag32(uint64(i32)) != nil {
+			t.Fatal("EncodeZigzag32")
+		}
+		x, e = o.DecodeZigzag32()
+		if e != nil {
+			t.Fatal("DecodeZigzag32")
+		}
+		if x != uint64(uint32(i32)) {
+			t.Fatal("zigzag32 decode fail:", i32, x)
+		}
+
+		o = old()
+		i64 := int64(i - 12345)
+		if o.EncodeZigzag64(uint64(i64)) != nil {
+			t.Fatal("EncodeZigzag64")
+		}
+		x, e = o.DecodeZigzag64()
+		if e != nil {
+			t.Fatal("DecodeZigzag64")
+		}
+		if x != uint64(i64) {
+			t.Fatal("zigzag64 decode fail:", i64, x)
+		}
+	}
+}
+
+// fakeMarshaler is a simple struct implementing Marshaler and Message interfaces.
+type fakeMarshaler struct {
+	b   []byte
+	err error
+}
+
+func (f *fakeMarshaler) Marshal() ([]byte, error) { return f.b, f.err }
+func (f *fakeMarshaler) String() string           { return fmt.Sprintf("Bytes: %v Error: %v", f.b, f.err) }
+func (f *fakeMarshaler) ProtoMessage()            {}
+func (f *fakeMarshaler) Reset()                   {}
+
+type msgWithFakeMarshaler struct {
+	M *fakeMarshaler `protobuf:"bytes,1,opt,name=fake"`
+}
+
+func (m *msgWithFakeMarshaler) String() string { return CompactTextString(m) }
+func (m *msgWithFakeMarshaler) ProtoMessage()  {}
+func (m *msgWithFakeMarshaler) Reset()         {}
+
+// Simple tests for proto messages that implement the Marshaler interface.
+func TestMarshalerEncoding(t *testing.T) {
+	tests := []struct {
+		name    string
+		m       Message
+		want    []byte
+		errType reflect.Type
+	}{
+		{
+			name: "Marshaler that fails",
+			m: &fakeMarshaler{
+				err: errors.New("some marshal err"),
+				b:   []byte{5, 6, 7},
+			},
+			// Since the Marshal method returned bytes, they should be written to the
+			// buffer.  (For efficiency, we assume that Marshal implementations are
+			// always correct w.r.t. RequiredNotSetError and output.)
+			want:    []byte{5, 6, 7},
+			errType: reflect.TypeOf(errors.New("some marshal err")),
+		},
+		{
+			name: "Marshaler that fails with RequiredNotSetError",
+			m: &msgWithFakeMarshaler{
+				M: &fakeMarshaler{
+					err: &RequiredNotSetError{},
+					b:   []byte{5, 6, 7},
+				},
+			},
+			// Since there's an error that can be continued after,
+			// the buffer should be written.
+			want: []byte{
+				10, 3, // for &msgWithFakeMarshaler
+				5, 6, 7, // for &fakeMarshaler
+			},
+			errType: reflect.TypeOf(&RequiredNotSetError{}),
+		},
+		{
+			name: "Marshaler that succeeds",
+			m: &fakeMarshaler{
+				b: []byte{0, 1, 2, 3, 4, 127, 255},
+			},
+			want: []byte{0, 1, 2, 3, 4, 127, 255},
+		},
+	}
+	for _, test := range tests {
+		b := NewBuffer(nil)
+		err := b.Marshal(test.m)
+		if reflect.TypeOf(err) != test.errType {
+			t.Errorf("%s: got err %T(%v) wanted %T", test.name, err, err, test.errType)
+		}
+		if !reflect.DeepEqual(test.want, b.Bytes()) {
+			t.Errorf("%s: got bytes %v wanted %v", test.name, b.Bytes(), test.want)
+		}
+		if size := Size(test.m); size != len(b.Bytes()) {
+			t.Errorf("%s: Size(_) = %v, but marshaled to %v bytes", test.name, size, len(b.Bytes()))
+		}
+
+		m, mErr := Marshal(test.m)
+		if !bytes.Equal(b.Bytes(), m) {
+			t.Errorf("%s: Marshal returned %v, but (*Buffer).Marshal wrote %v", test.name, m, b.Bytes())
+		}
+		if !reflect.DeepEqual(err, mErr) {
+			t.Errorf("%s: Marshal err = %q, but (*Buffer).Marshal returned %q",
+				test.name, fmt.Sprint(mErr), fmt.Sprint(err))
+		}
+	}
+}
+
+// Simple tests for bytes
+func TestBytesPrimitives(t *testing.T) {
+	o := old()
+	bytes := []byte{'n', 'o', 'w', ' ', 'i', 's', ' ', 't', 'h', 'e', ' ', 't', 'i', 'm', 'e'}
+	if o.EncodeRawBytes(bytes) != nil {
+		t.Error("EncodeRawBytes")
+	}
+	decb, e := o.DecodeRawBytes(false)
+	if e != nil {
+		t.Error("DecodeRawBytes")
+	}
+	equalbytes(bytes, decb, t)
+}
+
+// Simple tests for strings
+func TestStringPrimitives(t *testing.T) {
+	o := old()
+	s := "now is the time"
+	if o.EncodeStringBytes(s) != nil {
+		t.Error("enc_string")
+	}
+	decs, e := o.DecodeStringBytes()
+	if e != nil {
+		t.Error("dec_string")
+	}
+	if s != decs {
+		t.Error("string encode/decode fail:", s, decs)
+	}
+}
+
+// Do we catch the "required bit not set" case?
+func TestRequiredBit(t *testing.T) {
+	o := old()
+	pb := new(GoTest)
+	err := o.Marshal(pb)
+	if err == nil {
+		t.Error("did not catch missing required fields")
+	} else if strings.Index(err.Error(), "Kind") < 0 {
+		t.Error("wrong error type:", err)
+	}
+}
+
+// Check that all fields are nil.
+// Clearly silly, and a residue from a more interesting test with an earlier,
+// different initialization property, but it once caught a compiler bug so
+// it lives.
+func checkInitialized(pb *GoTest, t *testing.T) {
+	if pb.F_BoolDefaulted != nil {
+		t.Error("New or Reset did not set boolean:", *pb.F_BoolDefaulted)
+	}
+	if pb.F_Int32Defaulted != nil {
+		t.Error("New or Reset did not set int32:", *pb.F_Int32Defaulted)
+	}
+	if pb.F_Int64Defaulted != nil {
+		t.Error("New or Reset did not set int64:", *pb.F_Int64Defaulted)
+	}
+	if pb.F_Fixed32Defaulted != nil {
+		t.Error("New or Reset did not set fixed32:", *pb.F_Fixed32Defaulted)
+	}
+	if pb.F_Fixed64Defaulted != nil {
+		t.Error("New or Reset did not set fixed64:", *pb.F_Fixed64Defaulted)
+	}
+	if pb.F_Uint32Defaulted != nil {
+		t.Error("New or Reset did not set uint32:", *pb.F_Uint32Defaulted)
+	}
+	if pb.F_Uint64Defaulted != nil {
+		t.Error("New or Reset did not set uint64:", *pb.F_Uint64Defaulted)
+	}
+	if pb.F_FloatDefaulted != nil {
+		t.Error("New or Reset did not set float:", *pb.F_FloatDefaulted)
+	}
+	if pb.F_DoubleDefaulted != nil {
+		t.Error("New or Reset did not set double:", *pb.F_DoubleDefaulted)
+	}
+	if pb.F_StringDefaulted != nil {
+		t.Error("New or Reset did not set string:", *pb.F_StringDefaulted)
+	}
+	if pb.F_BytesDefaulted != nil {
+		t.Error("New or Reset did not set bytes:", string(pb.F_BytesDefaulted))
+	}
+	if pb.F_Sint32Defaulted != nil {
+		t.Error("New or Reset did not set int32:", *pb.F_Sint32Defaulted)
+	}
+	if pb.F_Sint64Defaulted != nil {
+		t.Error("New or Reset did not set int64:", *pb.F_Sint64Defaulted)
+	}
+}
+
+// Does Reset() reset?
+func TestReset(t *testing.T) {
+	pb := initGoTest(true)
+	// muck with some values
+	pb.F_BoolDefaulted = Bool(false)
+	pb.F_Int32Defaulted = Int32(237)
+	pb.F_Int64Defaulted = Int64(12346)
+	pb.F_Fixed32Defaulted = Uint32(32000)
+	pb.F_Fixed64Defaulted = Uint64(666)
+	pb.F_Uint32Defaulted = Uint32(323232)
+	pb.F_Uint64Defaulted = nil
+	pb.F_FloatDefaulted = nil
+	pb.F_DoubleDefaulted = Float64(0)
+	pb.F_StringDefaulted = String("gotcha")
+	pb.F_BytesDefaulted = []byte("asdfasdf")
+	pb.F_Sint32Defaulted = Int32(123)
+	pb.F_Sint64Defaulted = Int64(789)
+	pb.Reset()
+	checkInitialized(pb, t)
+}
+
+// All required fields set, no defaults provided.
+func TestEncodeDecode1(t *testing.T) {
+	pb := initGoTest(false)
+	overify(t, pb,
+		"0807"+ // field 1, encoding 0, value 7
+			"220d"+"0a056c6162656c120474797065"+ // field 4, encoding 2 (GoTestField)
+			"5001"+ // field 10, encoding 0, value 1
+			"5803"+ // field 11, encoding 0, value 3
+			"6006"+ // field 12, encoding 0, value 6
+			"6d20000000"+ // field 13, encoding 5, value 0x20
+			"714000000000000000"+ // field 14, encoding 1, value 0x40
+			"78a019"+ // field 15, encoding 0, value 0xca0 = 3232
+			"8001c032"+ // field 16, encoding 0, value 0x1940 = 6464
+			"8d0100004a45"+ // field 17, encoding 5, value 3232.0
+			"9101000000000040b940"+ // field 18, encoding 1, value 6464.0
+			"9a0106"+"737472696e67"+ // field 19, encoding 2, string "string"
+			"b304"+ // field 70, encoding 3, start group
+			"ba0408"+"7265717569726564"+ // field 71, encoding 2, string "required"
+			"b404"+ // field 70, encoding 4, end group
+			"aa0605"+"6279746573"+ // field 101, encoding 2, string "bytes"
+			"b0063f"+ // field 102, encoding 0, 0x3f zigzag32
+			"b8067f") // field 103, encoding 0, 0x7f zigzag64
+}
+
+// All required fields set, defaults provided.
+func TestEncodeDecode2(t *testing.T) {
+	pb := initGoTest(true)
+	overify(t, pb,
+		"0807"+ // field 1, encoding 0, value 7
+			"220d"+"0a056c6162656c120474797065"+ // field 4, encoding 2 (GoTestField)
+			"5001"+ // field 10, encoding 0, value 1
+			"5803"+ // field 11, encoding 0, value 3
+			"6006"+ // field 12, encoding 0, value 6
+			"6d20000000"+ // field 13, encoding 5, value 32
+			"714000000000000000"+ // field 14, encoding 1, value 64
+			"78a019"+ // field 15, encoding 0, value 3232
+			"8001c032"+ // field 16, encoding 0, value 6464
+			"8d0100004a45"+ // field 17, encoding 5, value 3232.0
+			"9101000000000040b940"+ // field 18, encoding 1, value 6464.0
+			"9a0106"+"737472696e67"+ // field 19, encoding 2 string "string"
+			"c00201"+ // field 40, encoding 0, value 1
+			"c80220"+ // field 41, encoding 0, value 32
+			"d00240"+ // field 42, encoding 0, value 64
+			"dd0240010000"+ // field 43, encoding 5, value 320
+			"e1028002000000000000"+ // field 44, encoding 1, value 640
+			"e8028019"+ // field 45, encoding 0, value 3200
+			"f0028032"+ // field 46, encoding 0, value 6400
+			"fd02e0659948"+ // field 47, encoding 5, value 314159.0
+			"81030000000050971041"+ // field 48, encoding 1, value 271828.0
+			"8a0310"+"68656c6c6f2c2022776f726c6421220a"+ // field 49, encoding 2 string "hello, \"world!\"\n"
+			"b304"+ // start group field 70 level 1
+			"ba0408"+"7265717569726564"+ // field 71, encoding 2, string "required"
+			"b404"+ // end group field 70 level 1
+			"aa0605"+"6279746573"+ // field 101, encoding 2 string "bytes"
+			"b0063f"+ // field 102, encoding 0, 0x3f zigzag32
+			"b8067f"+ // field 103, encoding 0, 0x7f zigzag64
+			"8a1907"+"4269676e6f7365"+ // field 401, encoding 2, string "Bignose"
+			"90193f"+ // field 402, encoding 0, value 63
+			"98197f") // field 403, encoding 0, value 127
+
+}
+
+// All default fields set to their default value by hand
+func TestEncodeDecode3(t *testing.T) {
+	pb := initGoTest(false)
+	pb.F_BoolDefaulted = Bool(true)
+	pb.F_Int32Defaulted = Int32(32)
+	pb.F_Int64Defaulted = Int64(64)
+	pb.F_Fixed32Defaulted = Uint32(320)
+	pb.F_Fixed64Defaulted = Uint64(640)
+	pb.F_Uint32Defaulted = Uint32(3200)
+	pb.F_Uint64Defaulted = Uint64(6400)
+	pb.F_FloatDefaulted = Float32(314159)
+	pb.F_DoubleDefaulted = Float64(271828)
+	pb.F_StringDefaulted = String("hello, \"world!\"\n")
+	pb.F_BytesDefaulted = []byte("Bignose")
+	pb.F_Sint32Defaulted = Int32(-32)
+	pb.F_Sint64Defaulted = Int64(-64)
+
+	overify(t, pb,
+		"0807"+ // field 1, encoding 0, value 7
+			"220d"+"0a056c6162656c120474797065"+ // field 4, encoding 2 (GoTestField)
+			"5001"+ // field 10, encoding 0, value 1
+			"5803"+ // field 11, encoding 0, value 3
+			"6006"+ // field 12, encoding 0, value 6
+			"6d20000000"+ // field 13, encoding 5, value 32
+			"714000000000000000"+ // field 14, encoding 1, value 64
+			"78a019"+ // field 15, encoding 0, value 3232
+			"8001c032"+ // field 16, encoding 0, value 6464
+			"8d0100004a45"+ // field 17, encoding 5, value 3232.0
+			"9101000000000040b940"+ // field 18, encoding 1, value 6464.0
+			"9a0106"+"737472696e67"+ // field 19, encoding 2 string "string"
+			"c00201"+ // field 40, encoding 0, value 1
+			"c80220"+ // field 41, encoding 0, value 32
+			"d00240"+ // field 42, encoding 0, value 64
+			"dd0240010000"+ // field 43, encoding 5, value 320
+			"e1028002000000000000"+ // field 44, encoding 1, value 640
+			"e8028019"+ // field 45, encoding 0, value 3200
+			"f0028032"+ // field 46, encoding 0, value 6400
+			"fd02e0659948"+ // field 47, encoding 5, value 314159.0
+			"81030000000050971041"+ // field 48, encoding 1, value 271828.0
+			"8a0310"+"68656c6c6f2c2022776f726c6421220a"+ // field 49, encoding 2 string "hello, \"world!\"\n"
+			"b304"+ // start group field 70 level 1
+			"ba0408"+"7265717569726564"+ // field 71, encoding 2, string "required"
+			"b404"+ // end group field 70 level 1
+			"aa0605"+"6279746573"+ // field 101, encoding 2 string "bytes"
+			"b0063f"+ // field 102, encoding 0, 0x3f zigzag32
+			"b8067f"+ // field 103, encoding 0, 0x7f zigzag64
+			"8a1907"+"4269676e6f7365"+ // field 401, encoding 2, string "Bignose"
+			"90193f"+ // field 402, encoding 0, value 63
+			"98197f") // field 403, encoding 0, value 127
+
+}
+
+// All required fields set, defaults provided, all non-defaulted optional fields have values.
+func TestEncodeDecode4(t *testing.T) {
+	pb := initGoTest(true)
+	pb.Table = String("hello")
+	pb.Param = Int32(7)
+	pb.OptionalField = initGoTestField()
+	pb.F_BoolOptional = Bool(true)
+	pb.F_Int32Optional = Int32(32)
+	pb.F_Int64Optional = Int64(64)
+	pb.F_Fixed32Optional = Uint32(3232)
+	pb.F_Fixed64Optional = Uint64(6464)
+	pb.F_Uint32Optional = Uint32(323232)
+	pb.F_Uint64Optional = Uint64(646464)
+	pb.F_FloatOptional = Float32(32.)
+	pb.F_DoubleOptional = Float64(64.)
+	pb.F_StringOptional = String("hello")
+	pb.F_BytesOptional = []byte("Bignose")
+	pb.F_Sint32Optional = Int32(-32)
+	pb.F_Sint64Optional = Int64(-64)
+	pb.Optionalgroup = initGoTest_OptionalGroup()
+
+	overify(t, pb,
+		"0807"+ // field 1, encoding 0, value 7
+			"1205"+"68656c6c6f"+ // field 2, encoding 2, string "hello"
+			"1807"+ // field 3, encoding 0, value 7
+			"220d"+"0a056c6162656c120474797065"+ // field 4, encoding 2 (GoTestField)
+			"320d"+"0a056c6162656c120474797065"+ // field 6, encoding 2 (GoTestField)
+			"5001"+ // field 10, encoding 0, value 1
+			"5803"+ // field 11, encoding 0, value 3
+			"6006"+ // field 12, encoding 0, value 6
+			"6d20000000"+ // field 13, encoding 5, value 32
+			"714000000000000000"+ // field 14, encoding 1, value 64
+			"78a019"+ // field 15, encoding 0, value 3232
+			"8001c032"+ // field 16, encoding 0, value 6464
+			"8d0100004a45"+ // field 17, encoding 5, value 3232.0
+			"9101000000000040b940"+ // field 18, encoding 1, value 6464.0
+			"9a0106"+"737472696e67"+ // field 19, encoding 2 string "string"
+			"f00101"+ // field 30, encoding 0, value 1
+			"f80120"+ // field 31, encoding 0, value 32
+			"800240"+ // field 32, encoding 0, value 64
+			"8d02a00c0000"+ // field 33, encoding 5, value 3232
+			"91024019000000000000"+ // field 34, encoding 1, value 6464
+			"9802a0dd13"+ // field 35, encoding 0, value 323232
+			"a002c0ba27"+ // field 36, encoding 0, value 646464
+			"ad0200000042"+ // field 37, encoding 5, value 32.0
+			"b1020000000000005040"+ // field 38, encoding 1, value 64.0
+			"ba0205"+"68656c6c6f"+ // field 39, encoding 2, string "hello"
+			"c00201"+ // field 40, encoding 0, value 1
+			"c80220"+ // field 41, encoding 0, value 32
+			"d00240"+ // field 42, encoding 0, value 64
+			"dd0240010000"+ // field 43, encoding 5, value 320
+			"e1028002000000000000"+ // field 44, encoding 1, value 640
+			"e8028019"+ // field 45, encoding 0, value 3200
+			"f0028032"+ // field 46, encoding 0, value 6400
+			"fd02e0659948"+ // field 47, encoding 5, value 314159.0
+			"81030000000050971041"+ // field 48, encoding 1, value 271828.0
+			"8a0310"+"68656c6c6f2c2022776f726c6421220a"+ // field 49, encoding 2 string "hello, \"world!\"\n"
+			"b304"+ // start group field 70 level 1
+			"ba0408"+"7265717569726564"+ // field 71, encoding 2, string "required"
+			"b404"+ // end group field 70 level 1
+			"d305"+ // start group field 90 level 1
+			"da0508"+"6f7074696f6e616c"+ // field 91, encoding 2, string "optional"
+			"d405"+ // end group field 90 level 1
+			"aa0605"+"6279746573"+ // field 101, encoding 2 string "bytes"
+			"b0063f"+ // field 102, encoding 0, 0x3f zigzag32
+			"b8067f"+ // field 103, encoding 0, 0x7f zigzag64
+			"ea1207"+"4269676e6f7365"+ // field 301, encoding 2, string "Bignose"
+			"f0123f"+ // field 302, encoding 0, value 63
+			"f8127f"+ // field 303, encoding 0, value 127
+			"8a1907"+"4269676e6f7365"+ // field 401, encoding 2, string "Bignose"
+			"90193f"+ // field 402, encoding 0, value 63
+			"98197f") // field 403, encoding 0, value 127
+
+}
+
+// All required fields set, defaults provided, all repeated fields given two values.
+func TestEncodeDecode5(t *testing.T) {
+	pb := initGoTest(true)
+	pb.RepeatedField = []*GoTestField{initGoTestField(), initGoTestField()}
+	pb.F_BoolRepeated = []bool{false, true}
+	pb.F_Int32Repeated = []int32{32, 33}
+	pb.F_Int64Repeated = []int64{64, 65}
+	pb.F_Fixed32Repeated = []uint32{3232, 3333}
+	pb.F_Fixed64Repeated = []uint64{6464, 6565}
+	pb.F_Uint32Repeated = []uint32{323232, 333333}
+	pb.F_Uint64Repeated = []uint64{646464, 656565}
+	pb.F_FloatRepeated = []float32{32., 33.}
+	pb.F_DoubleRepeated = []float64{64., 65.}
+	pb.F_StringRepeated = []string{"hello", "sailor"}
+	pb.F_BytesRepeated = [][]byte{[]byte("big"), []byte("nose")}
+	pb.F_Sint32Repeated = []int32{32, -32}
+	pb.F_Sint64Repeated = []int64{64, -64}
+	pb.Repeatedgroup = []*GoTest_RepeatedGroup{initGoTest_RepeatedGroup(), initGoTest_RepeatedGroup()}
+
+	overify(t, pb,
+		"0807"+ // field 1, encoding 0, value 7
+			"220d"+"0a056c6162656c120474797065"+ // field 4, encoding 2 (GoTestField)
+			"2a0d"+"0a056c6162656c120474797065"+ // field 5, encoding 2 (GoTestField)
+			"2a0d"+"0a056c6162656c120474797065"+ // field 5, encoding 2 (GoTestField)
+			"5001"+ // field 10, encoding 0, value 1
+			"5803"+ // field 11, encoding 0, value 3
+			"6006"+ // field 12, encoding 0, value 6
+			"6d20000000"+ // field 13, encoding 5, value 32
+			"714000000000000000"+ // field 14, encoding 1, value 64
+			"78a019"+ // field 15, encoding 0, value 3232
+			"8001c032"+ // field 16, encoding 0, value 6464
+			"8d0100004a45"+ // field 17, encoding 5, value 3232.0
+			"9101000000000040b940"+ // field 18, encoding 1, value 6464.0
+			"9a0106"+"737472696e67"+ // field 19, encoding 2 string "string"
+			"a00100"+ // field 20, encoding 0, value 0
+			"a00101"+ // field 20, encoding 0, value 1
+			"a80120"+ // field 21, encoding 0, value 32
+			"a80121"+ // field 21, encoding 0, value 33
+			"b00140"+ // field 22, encoding 0, value 64
+			"b00141"+ // field 22, encoding 0, value 65
+			"bd01a00c0000"+ // field 23, encoding 5, value 3232
+			"bd01050d0000"+ // field 23, encoding 5, value 3333
+			"c1014019000000000000"+ // field 24, encoding 1, value 6464
+			"c101a519000000000000"+ // field 24, encoding 1, value 6565
+			"c801a0dd13"+ // field 25, encoding 0, value 323232
+			"c80195ac14"+ // field 25, encoding 0, value 333333
+			"d001c0ba27"+ // field 26, encoding 0, value 646464
+			"d001b58928"+ // field 26, encoding 0, value 656565
+			"dd0100000042"+ // field 27, encoding 5, value 32.0
+			"dd0100000442"+ // field 27, encoding 5, value 33.0
+			"e1010000000000005040"+ // field 28, encoding 1, value 64.0
+			"e1010000000000405040"+ // field 28, encoding 1, value 65.0
+			"ea0105"+"68656c6c6f"+ // field 29, encoding 2, string "hello"
+			"ea0106"+"7361696c6f72"+ // field 29, encoding 2, string "sailor"
+			"c00201"+ // field 40, encoding 0, value 1
+			"c80220"+ // field 41, encoding 0, value 32
+			"d00240"+ // field 42, encoding 0, value 64
+			"dd0240010000"+ // field 43, encoding 5, value 320
+			"e1028002000000000000"+ // field 44, encoding 1, value 640
+			"e8028019"+ // field 45, encoding 0, value 3200
+			"f0028032"+ // field 46, encoding 0, value 6400
+			"fd02e0659948"+ // field 47, encoding 5, value 314159.0
+			"81030000000050971041"+ // field 48, encoding 1, value 271828.0
+			"8a0310"+"68656c6c6f2c2022776f726c6421220a"+ // field 49, encoding 2 string "hello, \"world!\"\n"
+			"b304"+ // start group field 70 level 1
+			"ba0408"+"7265717569726564"+ // field 71, encoding 2, string "required"
+			"b404"+ // end group field 70 level 1
+			"8305"+ // start group field 80 level 1
+			"8a0508"+"7265706561746564"+ // field 81, encoding 2, string "repeated"
+			"8405"+ // end group field 80 level 1
+			"8305"+ // start group field 80 level 1
+			"8a0508"+"7265706561746564"+ // field 81, encoding 2, string "repeated"
+			"8405"+ // end group field 80 level 1
+			"aa0605"+"6279746573"+ // field 101, encoding 2 string "bytes"
+			"b0063f"+ // field 102, encoding 0, 0x3f zigzag32
+			"b8067f"+ // field 103, encoding 0, 0x7f zigzag64
+			"ca0c03"+"626967"+ // field 201, encoding 2, string "big"
+			"ca0c04"+"6e6f7365"+ // field 201, encoding 2, string "nose"
+			"d00c40"+ // field 202, encoding 0, value 32
+			"d00c3f"+ // field 202, encoding 0, value -32
+			"d80c8001"+ // field 203, encoding 0, value 64
+			"d80c7f"+ // field 203, encoding 0, value -64
+			"8a1907"+"4269676e6f7365"+ // field 401, encoding 2, string "Bignose"
+			"90193f"+ // field 402, encoding 0, value 63
+			"98197f") // field 403, encoding 0, value 127
+
+}
+
+// All required fields set, all packed repeated fields given two values.
+func TestEncodeDecode6(t *testing.T) {
+	pb := initGoTest(false)
+	pb.F_BoolRepeatedPacked = []bool{false, true}
+	pb.F_Int32RepeatedPacked = []int32{32, 33}
+	pb.F_Int64RepeatedPacked = []int64{64, 65}
+	pb.F_Fixed32RepeatedPacked = []uint32{3232, 3333}
+	pb.F_Fixed64RepeatedPacked = []uint64{6464, 6565}
+	pb.F_Uint32RepeatedPacked = []uint32{323232, 333333}
+	pb.F_Uint64RepeatedPacked = []uint64{646464, 656565}
+	pb.F_FloatRepeatedPacked = []float32{32., 33.}
+	pb.F_DoubleRepeatedPacked = []float64{64., 65.}
+	pb.F_Sint32RepeatedPacked = []int32{32, -32}
+	pb.F_Sint64RepeatedPacked = []int64{64, -64}
+
+	overify(t, pb,
+		"0807"+ // field 1, encoding 0, value 7
+			"220d"+"0a056c6162656c120474797065"+ // field 4, encoding 2 (GoTestField)
+			"5001"+ // field 10, encoding 0, value 1
+			"5803"+ // field 11, encoding 0, value 3
+			"6006"+ // field 12, encoding 0, value 6
+			"6d20000000"+ // field 13, encoding 5, value 32
+			"714000000000000000"+ // field 14, encoding 1, value 64
+			"78a019"+ // field 15, encoding 0, value 3232
+			"8001c032"+ // field 16, encoding 0, value 6464
+			"8d0100004a45"+ // field 17, encoding 5, value 3232.0
+			"9101000000000040b940"+ // field 18, encoding 1, value 6464.0
+			"9a0106"+"737472696e67"+ // field 19, encoding 2 string "string"
+			"9203020001"+ // field 50, encoding 2, 2 bytes, value 0, value 1
+			"9a03022021"+ // field 51, encoding 2, 2 bytes, value 32, value 33
+			"a203024041"+ // field 52, encoding 2, 2 bytes, value 64, value 65
+			"aa0308"+ // field 53, encoding 2, 8 bytes
+			"a00c0000050d0000"+ // value 3232, value 3333
+			"b20310"+ // field 54, encoding 2, 16 bytes
+			"4019000000000000a519000000000000"+ // value 6464, value 6565
+			"ba0306"+ // field 55, encoding 2, 6 bytes
+			"a0dd1395ac14"+ // value 323232, value 333333
+			"c20306"+ // field 56, encoding 2, 6 bytes
+			"c0ba27b58928"+ // value 646464, value 656565
+			"ca0308"+ // field 57, encoding 2, 8 bytes
+			"0000004200000442"+ // value 32.0, value 33.0
+			"d20310"+ // field 58, encoding 2, 16 bytes
+			"00000000000050400000000000405040"+ // value 64.0, value 65.0
+			"b304"+ // start group field 70 level 1
+			"ba0408"+"7265717569726564"+ // field 71, encoding 2, string "required"
+			"b404"+ // end group field 70 level 1
+			"aa0605"+"6279746573"+ // field 101, encoding 2 string "bytes"
+			"b0063f"+ // field 102, encoding 0, 0x3f zigzag32
+			"b8067f"+ // field 103, encoding 0, 0x7f zigzag64
+			"b21f02"+ // field 502, encoding 2, 2 bytes
+			"403f"+ // value 32, value -32
+			"ba1f03"+ // field 503, encoding 2, 3 bytes
+			"80017f") // value 64, value -64
+}
+
+// Test that we can encode empty bytes fields.
+func TestEncodeDecodeBytes1(t *testing.T) {
+	pb := initGoTest(false)
+
+	// Create our bytes
+	pb.F_BytesRequired = []byte{}
+	pb.F_BytesRepeated = [][]byte{{}}
+	pb.F_BytesOptional = []byte{}
+
+	d, err := Marshal(pb)
+	if err != nil {
+		t.Error(err)
+	}
+
+	pbd := new(GoTest)
+	if err := Unmarshal(d, pbd); err != nil {
+		t.Error(err)
+	}
+
+	if pbd.F_BytesRequired == nil || len(pbd.F_BytesRequired) != 0 {
+		t.Error("required empty bytes field is incorrect")
+	}
+	if pbd.F_BytesRepeated == nil || len(pbd.F_BytesRepeated) == 1 && pbd.F_BytesRepeated[0] == nil {
+		t.Error("repeated empty bytes field is incorrect")
+	}
+	if pbd.F_BytesOptional == nil || len(pbd.F_BytesOptional) != 0 {
+		t.Error("optional empty bytes field is incorrect")
+	}
+}
+
+// Test that we encode nil-valued fields of a repeated bytes field correctly.
+// Since entries in a repeated field cannot be nil, nil must mean empty value.
+func TestEncodeDecodeBytes2(t *testing.T) {
+	pb := initGoTest(false)
+
+	// Create our bytes
+	pb.F_BytesRepeated = [][]byte{nil}
+
+	d, err := Marshal(pb)
+	if err != nil {
+		t.Error(err)
+	}
+
+	pbd := new(GoTest)
+	if err := Unmarshal(d, pbd); err != nil {
+		t.Error(err)
+	}
+
+	if len(pbd.F_BytesRepeated) != 1 || pbd.F_BytesRepeated[0] == nil {
+		t.Error("Unexpected value for repeated bytes field")
+	}
+}
+
+// All required fields set, defaults provided, all repeated fields given two values.
+func TestSkippingUnrecognizedFields(t *testing.T) {
+	o := old()
+	pb := initGoTestField()
+
+	// Marshal it normally.
+	o.Marshal(pb)
+
+	// Now new a GoSkipTest record.
+	skip := &GoSkipTest{
+		SkipInt32:   Int32(32),
+		SkipFixed32: Uint32(3232),
+		SkipFixed64: Uint64(6464),
+		SkipString:  String("skipper"),
+		Skipgroup: &GoSkipTest_SkipGroup{
+			GroupInt32:  Int32(75),
+			GroupString: String("wxyz"),
+		},
+	}
+
+	// Marshal it into same buffer.
+	o.Marshal(skip)
+
+	pbd := new(GoTestField)
+	o.Unmarshal(pbd)
+
+	// The __unrecognized field should be a marshaling of GoSkipTest
+	skipd := new(GoSkipTest)
+
+	o.SetBuf(pbd.XXX_unrecognized)
+	o.Unmarshal(skipd)
+
+	if *skipd.SkipInt32 != *skip.SkipInt32 {
+		t.Error("skip int32", skipd.SkipInt32)
+	}
+	if *skipd.SkipFixed32 != *skip.SkipFixed32 {
+		t.Error("skip fixed32", skipd.SkipFixed32)
+	}
+	if *skipd.SkipFixed64 != *skip.SkipFixed64 {
+		t.Error("skip fixed64", skipd.SkipFixed64)
+	}
+	if *skipd.SkipString != *skip.SkipString {
+		t.Error("skip string", *skipd.SkipString)
+	}
+	if *skipd.Skipgroup.GroupInt32 != *skip.Skipgroup.GroupInt32 {
+		t.Error("skip group int32", skipd.Skipgroup.GroupInt32)
+	}
+	if *skipd.Skipgroup.GroupString != *skip.Skipgroup.GroupString {
+		t.Error("skip group string", *skipd.Skipgroup.GroupString)
+	}
+}
+
+// Check that unrecognized fields of a submessage are preserved.
+func TestSubmessageUnrecognizedFields(t *testing.T) {
+	nm := &NewMessage{
+		Nested: &NewMessage_Nested{
+			Name:      String("Nigel"),
+			FoodGroup: String("carbs"),
+		},
+	}
+	b, err := Marshal(nm)
+	if err != nil {
+		t.Fatalf("Marshal of NewMessage: %v", err)
+	}
+
+	// Unmarshal into an OldMessage.
+	om := new(OldMessage)
+	if err := Unmarshal(b, om); err != nil {
+		t.Fatalf("Unmarshal to OldMessage: %v", err)
+	}
+	exp := &OldMessage{
+		Nested: &OldMessage_Nested{
+			Name: String("Nigel"),
+			// normal protocol buffer users should not do this
+			XXX_unrecognized: []byte("\x12\x05carbs"),
+		},
+	}
+	if !Equal(om, exp) {
+		t.Errorf("om = %v, want %v", om, exp)
+	}
+
+	// Clone the OldMessage.
+	om = Clone(om).(*OldMessage)
+	if !Equal(om, exp) {
+		t.Errorf("Clone(om) = %v, want %v", om, exp)
+	}
+
+	// Marshal the OldMessage, then unmarshal it into an empty NewMessage.
+	if b, err = Marshal(om); err != nil {
+		t.Fatalf("Marshal of OldMessage: %v", err)
+	}
+	t.Logf("Marshal(%v) -> %q", om, b)
+	nm2 := new(NewMessage)
+	if err := Unmarshal(b, nm2); err != nil {
+		t.Fatalf("Unmarshal to NewMessage: %v", err)
+	}
+	if !Equal(nm, nm2) {
+		t.Errorf("NewMessage round-trip: %v => %v", nm, nm2)
+	}
+}
+
+// Check that an int32 field can be upgraded to an int64 field.
+func TestNegativeInt32(t *testing.T) {
+	om := &OldMessage{
+		Num: Int32(-1),
+	}
+	b, err := Marshal(om)
+	if err != nil {
+		t.Fatalf("Marshal of OldMessage: %v", err)
+	}
+
+	// Check the size. It should be 11 bytes;
+	// 1 for the field/wire type, and 10 for the negative number.
+	if len(b) != 11 {
+		t.Errorf("%v marshaled as %q, wanted 11 bytes", om, b)
+	}
+
+	// Unmarshal into a NewMessage.
+	nm := new(NewMessage)
+	if err := Unmarshal(b, nm); err != nil {
+		t.Fatalf("Unmarshal to NewMessage: %v", err)
+	}
+	want := &NewMessage{
+		Num: Int64(-1),
+	}
+	if !Equal(nm, want) {
+		t.Errorf("nm = %v, want %v", nm, want)
+	}
+}
+
+// Check that we can grow an array (repeated field) to have many elements.
+// This test doesn't depend only on our encoding; for variety, it makes sure
+// we create, encode, and decode the correct contents explicitly.  It's therefore
+// a bit messier.
+// This test also uses (and hence tests) the Marshal/Unmarshal functions
+// instead of the methods.
+func TestBigRepeated(t *testing.T) {
+	pb := initGoTest(true)
+
+	// Create the arrays
+	const N = 50 // Internally the library starts much smaller.
+	pb.Repeatedgroup = make([]*GoTest_RepeatedGroup, N)
+	pb.F_Sint64Repeated = make([]int64, N)
+	pb.F_Sint32Repeated = make([]int32, N)
+	pb.F_BytesRepeated = make([][]byte, N)
+	pb.F_StringRepeated = make([]string, N)
+	pb.F_DoubleRepeated = make([]float64, N)
+	pb.F_FloatRepeated = make([]float32, N)
+	pb.F_Uint64Repeated = make([]uint64, N)
+	pb.F_Uint32Repeated = make([]uint32, N)
+	pb.F_Fixed64Repeated = make([]uint64, N)
+	pb.F_Fixed32Repeated = make([]uint32, N)
+	pb.F_Int64Repeated = make([]int64, N)
+	pb.F_Int32Repeated = make([]int32, N)
+	pb.F_BoolRepeated = make([]bool, N)
+	pb.RepeatedField = make([]*GoTestField, N)
+
+	// Fill in the arrays with checkable values.
+	igtf := initGoTestField()
+	igtrg := initGoTest_RepeatedGroup()
+	for i := 0; i < N; i++ {
+		pb.Repeatedgroup[i] = igtrg
+		pb.F_Sint64Repeated[i] = int64(i)
+		pb.F_Sint32Repeated[i] = int32(i)
+		s := fmt.Sprint(i)
+		pb.F_BytesRepeated[i] = []byte(s)
+		pb.F_StringRepeated[i] = s
+		pb.F_DoubleRepeated[i] = float64(i)
+		pb.F_FloatRepeated[i] = float32(i)
+		pb.F_Uint64Repeated[i] = uint64(i)
+		pb.F_Uint32Repeated[i] = uint32(i)
+		pb.F_Fixed64Repeated[i] = uint64(i)
+		pb.F_Fixed32Repeated[i] = uint32(i)
+		pb.F_Int64Repeated[i] = int64(i)
+		pb.F_Int32Repeated[i] = int32(i)
+		pb.F_BoolRepeated[i] = i%2 == 0
+		pb.RepeatedField[i] = igtf
+	}
+
+	// Marshal.
+	buf, _ := Marshal(pb)
+
+	// Now test Unmarshal by recreating the original buffer.
+	pbd := new(GoTest)
+	Unmarshal(buf, pbd)
+
+	// Check the checkable values
+	for i := uint64(0); i < N; i++ {
+		if pbd.Repeatedgroup[i] == nil { // TODO: more checking?
+			t.Error("pbd.Repeatedgroup bad")
+		}
+		var x uint64
+		x = uint64(pbd.F_Sint64Repeated[i])
+		if x != i {
+			t.Error("pbd.F_Sint64Repeated bad", x, i)
+		}
+		x = uint64(pbd.F_Sint32Repeated[i])
+		if x != i {
+			t.Error("pbd.F_Sint32Repeated bad", x, i)
+		}
+		s := fmt.Sprint(i)
+		equalbytes(pbd.F_BytesRepeated[i], []byte(s), t)
+		if pbd.F_StringRepeated[i] != s {
+			t.Error("pbd.F_Sint32Repeated bad", pbd.F_StringRepeated[i], i)
+		}
+		x = uint64(pbd.F_DoubleRepeated[i])
+		if x != i {
+			t.Error("pbd.F_DoubleRepeated bad", x, i)
+		}
+		x = uint64(pbd.F_FloatRepeated[i])
+		if x != i {
+			t.Error("pbd.F_FloatRepeated bad", x, i)
+		}
+		x = pbd.F_Uint64Repeated[i]
+		if x != i {
+			t.Error("pbd.F_Uint64Repeated bad", x, i)
+		}
+		x = uint64(pbd.F_Uint32Repeated[i])
+		if x != i {
+			t.Error("pbd.F_Uint32Repeated bad", x, i)
+		}
+		x = pbd.F_Fixed64Repeated[i]
+		if x != i {
+			t.Error("pbd.F_Fixed64Repeated bad", x, i)
+		}
+		x = uint64(pbd.F_Fixed32Repeated[i])
+		if x != i {
+			t.Error("pbd.F_Fixed32Repeated bad", x, i)
+		}
+		x = uint64(pbd.F_Int64Repeated[i])
+		if x != i {
+			t.Error("pbd.F_Int64Repeated bad", x, i)
+		}
+		x = uint64(pbd.F_Int32Repeated[i])
+		if x != i {
+			t.Error("pbd.F_Int32Repeated bad", x, i)
+		}
+		if pbd.F_BoolRepeated[i] != (i%2 == 0) {
+			t.Error("pbd.F_BoolRepeated bad", x, i)
+		}
+		if pbd.RepeatedField[i] == nil { // TODO: more checking?
+			t.Error("pbd.RepeatedField bad")
+		}
+	}
+}
+
+// Verify we give a useful message when decoding to the wrong structure type.
+func TestTypeMismatch(t *testing.T) {
+	pb1 := initGoTest(true)
+
+	// Marshal
+	o := old()
+	o.Marshal(pb1)
+
+	// Now Unmarshal it to the wrong type.
+	pb2 := initGoTestField()
+	err := o.Unmarshal(pb2)
+	if err == nil {
+		t.Error("expected error, got no error")
+	} else if !strings.Contains(err.Error(), "bad wiretype") {
+		t.Error("expected bad wiretype error, got", err)
+	}
+}
+
+func encodeDecode(t *testing.T, in, out Message, msg string) {
+	buf, err := Marshal(in)
+	if err != nil {
+		t.Fatalf("failed marshaling %v: %v", msg, err)
+	}
+	if err := Unmarshal(buf, out); err != nil {
+		t.Fatalf("failed unmarshaling %v: %v", msg, err)
+	}
+}
+
+func TestPackedNonPackedDecoderSwitching(t *testing.T) {
+	np, p := new(NonPackedTest), new(PackedTest)
+
+	// non-packed -> packed
+	np.A = []int32{0, 1, 1, 2, 3, 5}
+	encodeDecode(t, np, p, "non-packed -> packed")
+	if !reflect.DeepEqual(np.A, p.B) {
+		t.Errorf("failed non-packed -> packed; np.A=%+v, p.B=%+v", np.A, p.B)
+	}
+
+	// packed -> non-packed
+	np.Reset()
+	p.B = []int32{3, 1, 4, 1, 5, 9}
+	encodeDecode(t, p, np, "packed -> non-packed")
+	if !reflect.DeepEqual(p.B, np.A) {
+		t.Errorf("failed packed -> non-packed; p.B=%+v, np.A=%+v", p.B, np.A)
+	}
+}
+
+func TestProto1RepeatedGroup(t *testing.T) {
+	pb := &MessageList{
+		Message: []*MessageList_Message{
+			{
+				Name:  String("blah"),
+				Count: Int32(7),
+			},
+			// NOTE: pb.Message[1] is a nil
+			nil,
+		},
+	}
+
+	o := old()
+	err := o.Marshal(pb)
+	if err == nil || !strings.Contains(err.Error(), "repeated field Message has nil") {
+		t.Fatalf("unexpected or no error when marshaling: %v", err)
+	}
+}
+
+// Test that enums work.  Checks for a bug introduced by making enums
+// named types instead of int32: newInt32FromUint64 would crash with
+// a type mismatch in reflect.PointTo.
+func TestEnum(t *testing.T) {
+	pb := new(GoEnum)
+	pb.Foo = FOO_FOO1.Enum()
+	o := old()
+	if err := o.Marshal(pb); err != nil {
+		t.Fatal("error encoding enum:", err)
+	}
+	pb1 := new(GoEnum)
+	if err := o.Unmarshal(pb1); err != nil {
+		t.Fatal("error decoding enum:", err)
+	}
+	if *pb1.Foo != FOO_FOO1 {
+		t.Error("expected 7 but got ", *pb1.Foo)
+	}
+}
+
+// Enum types have String methods. Check that enum fields can be printed.
+// We don't care what the value actually is, just as long as it doesn't crash.
+func TestPrintingNilEnumFields(t *testing.T) {
+	pb := new(GoEnum)
+	_ = fmt.Sprintf("%+v", pb)
+}
+
+// Verify that absent required fields cause Marshal/Unmarshal to return errors.
+func TestRequiredFieldEnforcement(t *testing.T) {
+	pb := new(GoTestField)
+	_, err := Marshal(pb)
+	if err == nil {
+		t.Error("marshal: expected error, got nil")
+	} else if _, ok := err.(*RequiredNotSetError); !ok || !strings.Contains(err.Error(), "Label") {
+		t.Errorf("marshal: bad error type: %v", err)
+	}
+
+	// A slightly sneaky, yet valid, proto. It encodes the same required field twice,
+	// so simply counting the required fields is insufficient.
+	// field 1, encoding 2, value "hi"
+	buf := []byte("\x0A\x02hi\x0A\x02hi")
+	err = Unmarshal(buf, pb)
+	if err == nil {
+		t.Error("unmarshal: expected error, got nil")
+	} else if _, ok := err.(*RequiredNotSetError); !ok || !strings.Contains(err.Error(), "{Unknown}") {
+		t.Errorf("unmarshal: bad error type: %v", err)
+	}
+}
+
+// Verify that absent required fields in groups cause Marshal/Unmarshal to return errors.
+func TestRequiredFieldEnforcementGroups(t *testing.T) {
+	pb := &GoTestRequiredGroupField{Group: &GoTestRequiredGroupField_Group{}}
+	if _, err := Marshal(pb); err == nil {
+		t.Error("marshal: expected error, got nil")
+	} else if _, ok := err.(*RequiredNotSetError); !ok || !strings.Contains(err.Error(), "Group.Field") {
+		t.Errorf("marshal: bad error type: %v", err)
+	}
+
+	buf := []byte{11, 12}
+	if err := Unmarshal(buf, pb); err == nil {
+		t.Error("unmarshal: expected error, got nil")
+	} else if _, ok := err.(*RequiredNotSetError); !ok || !strings.Contains(err.Error(), "Group.{Unknown}") {
+		t.Errorf("unmarshal: bad error type: %v", err)
+	}
+}
+
+func TestTypedNilMarshal(t *testing.T) {
+	// A typed nil should return ErrNil and not crash.
+	{
+		var m *GoEnum
+		if _, err := Marshal(m); err != ErrNil {
+			t.Errorf("Marshal(%#v): got %v, want ErrNil", m, err)
+		}
+	}
+
+	{
+		m := &Communique{Union: &Communique_Msg{nil}}
+		if _, err := Marshal(m); err == nil || err == ErrNil {
+			t.Errorf("Marshal(%#v): got %v, want errOneofHasNil", m, err)
+		}
+	}
+}
+
+// A type that implements the Marshaler interface, but is not nillable.
+type nonNillableInt uint64
+
+func (nni nonNillableInt) Marshal() ([]byte, error) {
+	return EncodeVarint(uint64(nni)), nil
+}
+
+type NNIMessage struct {
+	nni nonNillableInt
+}
+
+func (*NNIMessage) Reset()         {}
+func (*NNIMessage) String() string { return "" }
+func (*NNIMessage) ProtoMessage()  {}
+
+// A type that implements the Marshaler interface and is nillable.
+type nillableMessage struct {
+	x uint64
+}
+
+func (nm *nillableMessage) Marshal() ([]byte, error) {
+	return EncodeVarint(nm.x), nil
+}
+
+type NMMessage struct {
+	nm *nillableMessage
+}
+
+func (*NMMessage) Reset()         {}
+func (*NMMessage) String() string { return "" }
+func (*NMMessage) ProtoMessage()  {}
+
+// Verify a type that uses the Marshaler interface, but has a nil pointer.
+func TestNilMarshaler(t *testing.T) {
+	// Try a struct with a Marshaler field that is nil.
+	// It should be directly marshable.
+	nmm := new(NMMessage)
+	if _, err := Marshal(nmm); err != nil {
+		t.Error("unexpected error marshaling nmm: ", err)
+	}
+
+	// Try a struct with a Marshaler field that is not nillable.
+	nnim := new(NNIMessage)
+	nnim.nni = 7
+	var _ Marshaler = nnim.nni // verify it is truly a Marshaler
+	if _, err := Marshal(nnim); err != nil {
+		t.Error("unexpected error marshaling nnim: ", err)
+	}
+}
+
+func TestAllSetDefaults(t *testing.T) {
+	// Exercise SetDefaults with all scalar field types.
+	m := &Defaults{
+		// NaN != NaN, so override that here.
+		F_Nan: Float32(1.7),
+	}
+	expected := &Defaults{
+		F_Bool:    Bool(true),
+		F_Int32:   Int32(32),
+		F_Int64:   Int64(64),
+		F_Fixed32: Uint32(320),
+		F_Fixed64: Uint64(640),
+		F_Uint32:  Uint32(3200),
+		F_Uint64:  Uint64(6400),
+		F_Float:   Float32(314159),
+		F_Double:  Float64(271828),
+		F_String:  String(`hello, "world!"` + "\n"),
+		F_Bytes:   []byte("Bignose"),
+		F_Sint32:  Int32(-32),
+		F_Sint64:  Int64(-64),
+		F_Enum:    Defaults_GREEN.Enum(),
+		F_Pinf:    Float32(float32(math.Inf(1))),
+		F_Ninf:    Float32(float32(math.Inf(-1))),
+		F_Nan:     Float32(1.7),
+		StrZero:   String(""),
+	}
+	SetDefaults(m)
+	if !Equal(m, expected) {
+		t.Errorf("SetDefaults failed\n got %v\nwant %v", m, expected)
+	}
+}
+
+func TestSetDefaultsWithSetField(t *testing.T) {
+	// Check that a set value is not overridden.
+	m := &Defaults{
+		F_Int32: Int32(12),
+	}
+	SetDefaults(m)
+	if v := m.GetF_Int32(); v != 12 {
+		t.Errorf("m.FInt32 = %v, want 12", v)
+	}
+}
+
+func TestSetDefaultsWithSubMessage(t *testing.T) {
+	m := &OtherMessage{
+		Key: Int64(123),
+		Inner: &InnerMessage{
+			Host: String("gopher"),
+		},
+	}
+	expected := &OtherMessage{
+		Key: Int64(123),
+		Inner: &InnerMessage{
+			Host: String("gopher"),
+			Port: Int32(4000),
+		},
+	}
+	SetDefaults(m)
+	if !Equal(m, expected) {
+		t.Errorf("\n got %v\nwant %v", m, expected)
+	}
+}
+
+func TestSetDefaultsWithRepeatedSubMessage(t *testing.T) {
+	m := &MyMessage{
+		RepInner: []*InnerMessage{{}},
+	}
+	expected := &MyMessage{
+		RepInner: []*InnerMessage{{
+			Port: Int32(4000),
+		}},
+	}
+	SetDefaults(m)
+	if !Equal(m, expected) {
+		t.Errorf("\n got %v\nwant %v", m, expected)
+	}
+}
+
+func TestSetDefaultWithRepeatedNonMessage(t *testing.T) {
+	m := &MyMessage{
+		Pet: []string{"turtle", "wombat"},
+	}
+	expected := Clone(m)
+	SetDefaults(m)
+	if !Equal(m, expected) {
+		t.Errorf("\n got %v\nwant %v", m, expected)
+	}
+}
+
+func TestMaximumTagNumber(t *testing.T) {
+	m := &MaxTag{
+		LastField: String("natural goat essence"),
+	}
+	buf, err := Marshal(m)
+	if err != nil {
+		t.Fatalf("proto.Marshal failed: %v", err)
+	}
+	m2 := new(MaxTag)
+	if err := Unmarshal(buf, m2); err != nil {
+		t.Fatalf("proto.Unmarshal failed: %v", err)
+	}
+	if got, want := m2.GetLastField(), *m.LastField; got != want {
+		t.Errorf("got %q, want %q", got, want)
+	}
+}
+
+func TestJSON(t *testing.T) {
+	m := &MyMessage{
+		Count: Int32(4),
+		Pet:   []string{"bunny", "kitty"},
+		Inner: &InnerMessage{
+			Host: String("cauchy"),
+		},
+		Bikeshed: MyMessage_GREEN.Enum(),
+	}
+	const expected = `{"count":4,"pet":["bunny","kitty"],"inner":{"host":"cauchy"},"bikeshed":1}`
+
+	b, err := json.Marshal(m)
+	if err != nil {
+		t.Fatalf("json.Marshal failed: %v", err)
+	}
+	s := string(b)
+	if s != expected {
+		t.Errorf("got  %s\nwant %s", s, expected)
+	}
+
+	received := new(MyMessage)
+	if err := json.Unmarshal(b, received); err != nil {
+		t.Fatalf("json.Unmarshal failed: %v", err)
+	}
+	if !Equal(received, m) {
+		t.Fatalf("got %s, want %s", received, m)
+	}
+
+	// Test unmarshalling of JSON with symbolic enum name.
+	const old = `{"count":4,"pet":["bunny","kitty"],"inner":{"host":"cauchy"},"bikeshed":"GREEN"}`
+	received.Reset()
+	if err := json.Unmarshal([]byte(old), received); err != nil {
+		t.Fatalf("json.Unmarshal failed: %v", err)
+	}
+	if !Equal(received, m) {
+		t.Fatalf("got %s, want %s", received, m)
+	}
+}
+
+func TestBadWireType(t *testing.T) {
+	b := []byte{7<<3 | 6} // field 7, wire type 6
+	pb := new(OtherMessage)
+	if err := Unmarshal(b, pb); err == nil {
+		t.Errorf("Unmarshal did not fail")
+	} else if !strings.Contains(err.Error(), "unknown wire type") {
+		t.Errorf("wrong error: %v", err)
+	}
+}
+
+func TestBytesWithInvalidLength(t *testing.T) {
+	// If a byte sequence has an invalid (negative) length, Unmarshal should not panic.
+	b := []byte{2<<3 | WireBytes, 0xff, 0xff, 0xff, 0xff, 0xff, 0}
+	Unmarshal(b, new(MyMessage))
+}
+
+func TestLengthOverflow(t *testing.T) {
+	// Overflowing a length should not panic.
+	b := []byte{2<<3 | WireBytes, 1, 1, 3<<3 | WireBytes, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f, 0x01}
+	Unmarshal(b, new(MyMessage))
+}
+
+func TestVarintOverflow(t *testing.T) {
+	// Overflowing a 64-bit length should not be allowed.
+	b := []byte{1<<3 | WireVarint, 0x01, 3<<3 | WireBytes, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x01}
+	if err := Unmarshal(b, new(MyMessage)); err == nil {
+		t.Fatalf("Overflowed uint64 length without error")
+	}
+}
+
+func TestUnmarshalFuzz(t *testing.T) {
+	const N = 1000
+	seed := time.Now().UnixNano()
+	t.Logf("RNG seed is %d", seed)
+	rng := rand.New(rand.NewSource(seed))
+	buf := make([]byte, 20)
+	for i := 0; i < N; i++ {
+		for j := range buf {
+			buf[j] = byte(rng.Intn(256))
+		}
+		fuzzUnmarshal(t, buf)
+	}
+}
+
+func TestMergeMessages(t *testing.T) {
+	pb := &MessageList{Message: []*MessageList_Message{{Name: String("x"), Count: Int32(1)}}}
+	data, err := Marshal(pb)
+	if err != nil {
+		t.Fatalf("Marshal: %v", err)
+	}
+
+	pb1 := new(MessageList)
+	if err := Unmarshal(data, pb1); err != nil {
+		t.Fatalf("first Unmarshal: %v", err)
+	}
+	if err := Unmarshal(data, pb1); err != nil {
+		t.Fatalf("second Unmarshal: %v", err)
+	}
+	if len(pb1.Message) != 1 {
+		t.Errorf("two Unmarshals produced %d Messages, want 1", len(pb1.Message))
+	}
+
+	pb2 := new(MessageList)
+	if err := UnmarshalMerge(data, pb2); err != nil {
+		t.Fatalf("first UnmarshalMerge: %v", err)
+	}
+	if err := UnmarshalMerge(data, pb2); err != nil {
+		t.Fatalf("second UnmarshalMerge: %v", err)
+	}
+	if len(pb2.Message) != 2 {
+		t.Errorf("two UnmarshalMerges produced %d Messages, want 2", len(pb2.Message))
+	}
+}
+
+func TestExtensionMarshalOrder(t *testing.T) {
+	m := &MyMessage{Count: Int(123)}
+	if err := SetExtension(m, E_Ext_More, &Ext{Data: String("alpha")}); err != nil {
+		t.Fatalf("SetExtension: %v", err)
+	}
+	if err := SetExtension(m, E_Ext_Text, String("aleph")); err != nil {
+		t.Fatalf("SetExtension: %v", err)
+	}
+	if err := SetExtension(m, E_Ext_Number, Int32(1)); err != nil {
+		t.Fatalf("SetExtension: %v", err)
+	}
+
+	// Serialize m several times, and check we get the same bytes each time.
+	var orig []byte
+	for i := 0; i < 100; i++ {
+		b, err := Marshal(m)
+		if err != nil {
+			t.Fatalf("Marshal: %v", err)
+		}
+		if i == 0 {
+			orig = b
+			continue
+		}
+		if !bytes.Equal(b, orig) {
+			t.Errorf("Bytes differ on attempt #%d", i)
+		}
+	}
+}
+
+// Many extensions, because small maps might not iterate differently on each iteration.
+var exts = []*ExtensionDesc{
+	E_X201,
+	E_X202,
+	E_X203,
+	E_X204,
+	E_X205,
+	E_X206,
+	E_X207,
+	E_X208,
+	E_X209,
+	E_X210,
+	E_X211,
+	E_X212,
+	E_X213,
+	E_X214,
+	E_X215,
+	E_X216,
+	E_X217,
+	E_X218,
+	E_X219,
+	E_X220,
+	E_X221,
+	E_X222,
+	E_X223,
+	E_X224,
+	E_X225,
+	E_X226,
+	E_X227,
+	E_X228,
+	E_X229,
+	E_X230,
+	E_X231,
+	E_X232,
+	E_X233,
+	E_X234,
+	E_X235,
+	E_X236,
+	E_X237,
+	E_X238,
+	E_X239,
+	E_X240,
+	E_X241,
+	E_X242,
+	E_X243,
+	E_X244,
+	E_X245,
+	E_X246,
+	E_X247,
+	E_X248,
+	E_X249,
+	E_X250,
+}
+
+func TestMessageSetMarshalOrder(t *testing.T) {
+	m := &MyMessageSet{}
+	for _, x := range exts {
+		if err := SetExtension(m, x, &Empty{}); err != nil {
+			t.Fatalf("SetExtension: %v", err)
+		}
+	}
+
+	buf, err := Marshal(m)
+	if err != nil {
+		t.Fatalf("Marshal: %v", err)
+	}
+
+	// Serialize m several times, and check we get the same bytes each time.
+	for i := 0; i < 10; i++ {
+		b1, err := Marshal(m)
+		if err != nil {
+			t.Fatalf("Marshal: %v", err)
+		}
+		if !bytes.Equal(b1, buf) {
+			t.Errorf("Bytes differ on re-Marshal #%d", i)
+		}
+
+		m2 := &MyMessageSet{}
+		if err := Unmarshal(buf, m2); err != nil {
+			t.Errorf("Unmarshal: %v", err)
+		}
+		b2, err := Marshal(m2)
+		if err != nil {
+			t.Errorf("re-Marshal: %v", err)
+		}
+		if !bytes.Equal(b2, buf) {
+			t.Errorf("Bytes differ on round-trip #%d", i)
+		}
+	}
+}
+
+func TestUnmarshalMergesMessages(t *testing.T) {
+	// If a nested message occurs twice in the input,
+	// the fields should be merged when decoding.
+	a := &OtherMessage{
+		Key: Int64(123),
+		Inner: &InnerMessage{
+			Host: String("polhode"),
+			Port: Int32(1234),
+		},
+	}
+	aData, err := Marshal(a)
+	if err != nil {
+		t.Fatalf("Marshal(a): %v", err)
+	}
+	b := &OtherMessage{
+		Weight: Float32(1.2),
+		Inner: &InnerMessage{
+			Host:      String("herpolhode"),
+			Connected: Bool(true),
+		},
+	}
+	bData, err := Marshal(b)
+	if err != nil {
+		t.Fatalf("Marshal(b): %v", err)
+	}
+	want := &OtherMessage{
+		Key:    Int64(123),
+		Weight: Float32(1.2),
+		Inner: &InnerMessage{
+			Host:      String("herpolhode"),
+			Port:      Int32(1234),
+			Connected: Bool(true),
+		},
+	}
+	got := new(OtherMessage)
+	if err := Unmarshal(append(aData, bData...), got); err != nil {
+		t.Fatalf("Unmarshal: %v", err)
+	}
+	if !Equal(got, want) {
+		t.Errorf("\n got %v\nwant %v", got, want)
+	}
+}
+
+func TestEncodingSizes(t *testing.T) {
+	tests := []struct {
+		m Message
+		n int
+	}{
+		{&Defaults{F_Int32: Int32(math.MaxInt32)}, 6},
+		{&Defaults{F_Int32: Int32(math.MinInt32)}, 11},
+		{&Defaults{F_Uint32: Uint32(uint32(math.MaxInt32) + 1)}, 6},
+		{&Defaults{F_Uint32: Uint32(math.MaxUint32)}, 6},
+	}
+	for _, test := range tests {
+		b, err := Marshal(test.m)
+		if err != nil {
+			t.Errorf("Marshal(%v): %v", test.m, err)
+			continue
+		}
+		if len(b) != test.n {
+			t.Errorf("Marshal(%v) yielded %d bytes, want %d bytes", test.m, len(b), test.n)
+		}
+	}
+}
+
+func TestRequiredNotSetError(t *testing.T) {
+	pb := initGoTest(false)
+	pb.RequiredField.Label = nil
+	pb.F_Int32Required = nil
+	pb.F_Int64Required = nil
+
+	expected := "0807" + // field 1, encoding 0, value 7
+		"2206" + "120474797065" + // field 4, encoding 2 (GoTestField)
+		"5001" + // field 10, encoding 0, value 1
+		"6d20000000" + // field 13, encoding 5, value 0x20
+		"714000000000000000" + // field 14, encoding 1, value 0x40
+		"78a019" + // field 15, encoding 0, value 0xca0 = 3232
+		"8001c032" + // field 16, encoding 0, value 0x1940 = 6464
+		"8d0100004a45" + // field 17, encoding 5, value 3232.0
+		"9101000000000040b940" + // field 18, encoding 1, value 6464.0
+		"9a0106" + "737472696e67" + // field 19, encoding 2, string "string"
+		"b304" + // field 70, encoding 3, start group
+		"ba0408" + "7265717569726564" + // field 71, encoding 2, string "required"
+		"b404" + // field 70, encoding 4, end group
+		"aa0605" + "6279746573" + // field 101, encoding 2, string "bytes"
+		"b0063f" + // field 102, encoding 0, 0x3f zigzag32
+		"b8067f" // field 103, encoding 0, 0x7f zigzag64
+
+	o := old()
+	bytes, err := Marshal(pb)
+	if _, ok := err.(*RequiredNotSetError); !ok {
+		fmt.Printf("marshal-1 err = %v, want *RequiredNotSetError", err)
+		o.DebugPrint("", bytes)
+		t.Fatalf("expected = %s", expected)
+	}
+	if strings.Index(err.Error(), "RequiredField.Label") < 0 {
+		t.Errorf("marshal-1 wrong err msg: %v", err)
+	}
+	if !equal(bytes, expected, t) {
+		o.DebugPrint("neq 1", bytes)
+		t.Fatalf("expected = %s", expected)
+	}
+
+	// Now test Unmarshal by recreating the original buffer.
+	pbd := new(GoTest)
+	err = Unmarshal(bytes, pbd)
+	if _, ok := err.(*RequiredNotSetError); !ok {
+		t.Fatalf("unmarshal err = %v, want *RequiredNotSetError", err)
+		o.DebugPrint("", bytes)
+		t.Fatalf("string = %s", expected)
+	}
+	if strings.Index(err.Error(), "RequiredField.{Unknown}") < 0 {
+		t.Errorf("unmarshal wrong err msg: %v", err)
+	}
+	bytes, err = Marshal(pbd)
+	if _, ok := err.(*RequiredNotSetError); !ok {
+		t.Errorf("marshal-2 err = %v, want *RequiredNotSetError", err)
+		o.DebugPrint("", bytes)
+		t.Fatalf("string = %s", expected)
+	}
+	if strings.Index(err.Error(), "RequiredField.Label") < 0 {
+		t.Errorf("marshal-2 wrong err msg: %v", err)
+	}
+	if !equal(bytes, expected, t) {
+		o.DebugPrint("neq 2", bytes)
+		t.Fatalf("string = %s", expected)
+	}
+}
+
+func fuzzUnmarshal(t *testing.T, data []byte) {
+	defer func() {
+		if e := recover(); e != nil {
+			t.Errorf("These bytes caused a panic: %+v", data)
+			t.Logf("Stack:\n%s", debug.Stack())
+			t.FailNow()
+		}
+	}()
+
+	pb := new(MyMessage)
+	Unmarshal(data, pb)
+}
+
+func TestMapFieldMarshal(t *testing.T) {
+	m := &MessageWithMap{
+		NameMapping: map[int32]string{
+			1: "Rob",
+			4: "Ian",
+			8: "Dave",
+		},
+	}
+	b, err := Marshal(m)
+	if err != nil {
+		t.Fatalf("Marshal: %v", err)
+	}
+
+	// b should be the concatenation of these three byte sequences in some order.
+	parts := []string{
+		"\n\a\b\x01\x12\x03Rob",
+		"\n\a\b\x04\x12\x03Ian",
+		"\n\b\b\x08\x12\x04Dave",
+	}
+	ok := false
+	for i := range parts {
+		for j := range parts {
+			if j == i {
+				continue
+			}
+			for k := range parts {
+				if k == i || k == j {
+					continue
+				}
+				try := parts[i] + parts[j] + parts[k]
+				if bytes.Equal(b, []byte(try)) {
+					ok = true
+					break
+				}
+			}
+		}
+	}
+	if !ok {
+		t.Fatalf("Incorrect Marshal output.\n got %q\nwant %q (or a permutation of that)", b, parts[0]+parts[1]+parts[2])
+	}
+	t.Logf("FYI b: %q", b)
+
+	(new(Buffer)).DebugPrint("Dump of b", b)
+}
+
+func TestMapFieldRoundTrips(t *testing.T) {
+	m := &MessageWithMap{
+		NameMapping: map[int32]string{
+			1: "Rob",
+			4: "Ian",
+			8: "Dave",
+		},
+		MsgMapping: map[int64]*FloatingPoint{
+			0x7001: &FloatingPoint{F: Float64(2.0)},
+		},
+		ByteMapping: map[bool][]byte{
+			false: []byte("that's not right!"),
+			true:  []byte("aye, 'tis true!"),
+		},
+	}
+	b, err := Marshal(m)
+	if err != nil {
+		t.Fatalf("Marshal: %v", err)
+	}
+	t.Logf("FYI b: %q", b)
+	m2 := new(MessageWithMap)
+	if err := Unmarshal(b, m2); err != nil {
+		t.Fatalf("Unmarshal: %v", err)
+	}
+	for _, pair := range [][2]interface{}{
+		{m.NameMapping, m2.NameMapping},
+		{m.MsgMapping, m2.MsgMapping},
+		{m.ByteMapping, m2.ByteMapping},
+	} {
+		if !reflect.DeepEqual(pair[0], pair[1]) {
+			t.Errorf("Map did not survive a round trip.\ninitial: %v\n  final: %v", pair[0], pair[1])
+		}
+	}
+}
+
+func TestMapFieldWithNil(t *testing.T) {
+	m1 := &MessageWithMap{
+		MsgMapping: map[int64]*FloatingPoint{
+			1: nil,
+		},
+	}
+	b, err := Marshal(m1)
+	if err != nil {
+		t.Fatalf("Marshal: %v", err)
+	}
+	m2 := new(MessageWithMap)
+	if err := Unmarshal(b, m2); err != nil {
+		t.Fatalf("Unmarshal: %v, got these bytes: %v", err, b)
+	}
+	if v, ok := m2.MsgMapping[1]; !ok {
+		t.Error("msg_mapping[1] not present")
+	} else if v != nil {
+		t.Errorf("msg_mapping[1] not nil: %v", v)
+	}
+}
+
+func TestMapFieldWithNilBytes(t *testing.T) {
+	m1 := &MessageWithMap{
+		ByteMapping: map[bool][]byte{
+			false: []byte{},
+			true:  nil,
+		},
+	}
+	n := Size(m1)
+	b, err := Marshal(m1)
+	if err != nil {
+		t.Fatalf("Marshal: %v", err)
+	}
+	if n != len(b) {
+		t.Errorf("Size(m1) = %d; want len(Marshal(m1)) = %d", n, len(b))
+	}
+	m2 := new(MessageWithMap)
+	if err := Unmarshal(b, m2); err != nil {
+		t.Fatalf("Unmarshal: %v, got these bytes: %v", err, b)
+	}
+	if v, ok := m2.ByteMapping[false]; !ok {
+		t.Error("byte_mapping[false] not present")
+	} else if len(v) != 0 {
+		t.Errorf("byte_mapping[false] not empty: %#v", v)
+	}
+	if v, ok := m2.ByteMapping[true]; !ok {
+		t.Error("byte_mapping[true] not present")
+	} else if len(v) != 0 {
+		t.Errorf("byte_mapping[true] not empty: %#v", v)
+	}
+}
+
+func TestDecodeMapFieldMissingKey(t *testing.T) {
+	b := []byte{
+		0x0A, 0x03, // message, tag 1 (name_mapping), of length 3 bytes
+		// no key
+		0x12, 0x01, 0x6D, // string value of length 1 byte, value "m"
+	}
+	got := &MessageWithMap{}
+	err := Unmarshal(b, got)
+	if err != nil {
+		t.Fatalf("failed to marshal map with missing key: %v", err)
+	}
+	want := &MessageWithMap{NameMapping: map[int32]string{0: "m"}}
+	if !Equal(got, want) {
+		t.Errorf("Unmarshaled map with no key was not as expected. got: %v, want %v", got, want)
+	}
+}
+
+func TestDecodeMapFieldMissingValue(t *testing.T) {
+	b := []byte{
+		0x0A, 0x02, // message, tag 1 (name_mapping), of length 2 bytes
+		0x08, 0x01, // varint key, value 1
+		// no value
+	}
+	got := &MessageWithMap{}
+	err := Unmarshal(b, got)
+	if err != nil {
+		t.Fatalf("failed to marshal map with missing value: %v", err)
+	}
+	want := &MessageWithMap{NameMapping: map[int32]string{1: ""}}
+	if !Equal(got, want) {
+		t.Errorf("Unmarshaled map with no value was not as expected. got: %v, want %v", got, want)
+	}
+}
+
+func TestOneof(t *testing.T) {
+	m := &Communique{}
+	b, err := Marshal(m)
+	if err != nil {
+		t.Fatalf("Marshal of empty message with oneof: %v", err)
+	}
+	if len(b) != 0 {
+		t.Errorf("Marshal of empty message yielded too many bytes: %v", b)
+	}
+
+	m = &Communique{
+		Union: &Communique_Name{"Barry"},
+	}
+
+	// Round-trip.
+	b, err = Marshal(m)
+	if err != nil {
+		t.Fatalf("Marshal of message with oneof: %v", err)
+	}
+	if len(b) != 7 { // name tag/wire (1) + name len (1) + name (5)
+		t.Errorf("Incorrect marshal of message with oneof: %v", b)
+	}
+	m.Reset()
+	if err := Unmarshal(b, m); err != nil {
+		t.Fatalf("Unmarshal of message with oneof: %v", err)
+	}
+	if x, ok := m.Union.(*Communique_Name); !ok || x.Name != "Barry" {
+		t.Errorf("After round trip, Union = %+v", m.Union)
+	}
+	if name := m.GetName(); name != "Barry" {
+		t.Errorf("After round trip, GetName = %q, want %q", name, "Barry")
+	}
+
+	// Let's try with a message in the oneof.
+	m.Union = &Communique_Msg{&Strings{StringField: String("deep deep string")}}
+	b, err = Marshal(m)
+	if err != nil {
+		t.Fatalf("Marshal of message with oneof set to message: %v", err)
+	}
+	if len(b) != 20 { // msg tag/wire (1) + msg len (1) + msg (1 + 1 + 16)
+		t.Errorf("Incorrect marshal of message with oneof set to message: %v", b)
+	}
+	m.Reset()
+	if err := Unmarshal(b, m); err != nil {
+		t.Fatalf("Unmarshal of message with oneof set to message: %v", err)
+	}
+	ss, ok := m.Union.(*Communique_Msg)
+	if !ok || ss.Msg.GetStringField() != "deep deep string" {
+		t.Errorf("After round trip with oneof set to message, Union = %+v", m.Union)
+	}
+}
+
+func TestInefficientPackedBool(t *testing.T) {
+	// https://github.com/golang/protobuf/issues/76
+	inp := []byte{
+		0x12, 0x02, // 0x12 = 2<<3|2; 2 bytes
+		// Usually a bool should take a single byte,
+		// but it is permitted to be any varint.
+		0xb9, 0x30,
+	}
+	if err := Unmarshal(inp, new(MoreRepeated)); err != nil {
+		t.Error(err)
+	}
+}
+
+// Benchmarks
+
+func testMsg() *GoTest {
+	pb := initGoTest(true)
+	const N = 1000 // Internally the library starts much smaller.
+	pb.F_Int32Repeated = make([]int32, N)
+	pb.F_DoubleRepeated = make([]float64, N)
+	for i := 0; i < N; i++ {
+		pb.F_Int32Repeated[i] = int32(i)
+		pb.F_DoubleRepeated[i] = float64(i)
+	}
+	return pb
+}
+
+func bytesMsg() *GoTest {
+	pb := initGoTest(true)
+	buf := make([]byte, 4000)
+	for i := range buf {
+		buf[i] = byte(i)
+	}
+	pb.F_BytesDefaulted = buf
+	return pb
+}
+
+func benchmarkMarshal(b *testing.B, pb Message, marshal func(Message) ([]byte, error)) {
+	d, _ := marshal(pb)
+	b.SetBytes(int64(len(d)))
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		marshal(pb)
+	}
+}
+
+func benchmarkBufferMarshal(b *testing.B, pb Message) {
+	p := NewBuffer(nil)
+	benchmarkMarshal(b, pb, func(pb0 Message) ([]byte, error) {
+		p.Reset()
+		err := p.Marshal(pb0)
+		return p.Bytes(), err
+	})
+}
+
+func benchmarkSize(b *testing.B, pb Message) {
+	benchmarkMarshal(b, pb, func(pb0 Message) ([]byte, error) {
+		Size(pb)
+		return nil, nil
+	})
+}
+
+func newOf(pb Message) Message {
+	in := reflect.ValueOf(pb)
+	if in.IsNil() {
+		return pb
+	}
+	return reflect.New(in.Type().Elem()).Interface().(Message)
+}
+
+func benchmarkUnmarshal(b *testing.B, pb Message, unmarshal func([]byte, Message) error) {
+	d, _ := Marshal(pb)
+	b.SetBytes(int64(len(d)))
+	pbd := newOf(pb)
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		unmarshal(d, pbd)
+	}
+}
+
+func benchmarkBufferUnmarshal(b *testing.B, pb Message) {
+	p := NewBuffer(nil)
+	benchmarkUnmarshal(b, pb, func(d []byte, pb0 Message) error {
+		p.SetBuf(d)
+		return p.Unmarshal(pb0)
+	})
+}
+
+// Benchmark{Marshal,BufferMarshal,Size,Unmarshal,BufferUnmarshal}{,Bytes}
+
+func BenchmarkMarshal(b *testing.B) {
+	benchmarkMarshal(b, testMsg(), Marshal)
+}
+
+func BenchmarkBufferMarshal(b *testing.B) {
+	benchmarkBufferMarshal(b, testMsg())
+}
+
+func BenchmarkSize(b *testing.B) {
+	benchmarkSize(b, testMsg())
+}
+
+func BenchmarkUnmarshal(b *testing.B) {
+	benchmarkUnmarshal(b, testMsg(), Unmarshal)
+}
+
+func BenchmarkBufferUnmarshal(b *testing.B) {
+	benchmarkBufferUnmarshal(b, testMsg())
+}
+
+func BenchmarkMarshalBytes(b *testing.B) {
+	benchmarkMarshal(b, bytesMsg(), Marshal)
+}
+
+func BenchmarkBufferMarshalBytes(b *testing.B) {
+	benchmarkBufferMarshal(b, bytesMsg())
+}
+
+func BenchmarkSizeBytes(b *testing.B) {
+	benchmarkSize(b, bytesMsg())
+}
+
+func BenchmarkUnmarshalBytes(b *testing.B) {
+	benchmarkUnmarshal(b, bytesMsg(), Unmarshal)
+}
+
+func BenchmarkBufferUnmarshalBytes(b *testing.B) {
+	benchmarkBufferUnmarshal(b, bytesMsg())
+}
+
+func BenchmarkUnmarshalUnrecognizedFields(b *testing.B) {
+	b.StopTimer()
+	pb := initGoTestField()
+	skip := &GoSkipTest{
+		SkipInt32:   Int32(32),
+		SkipFixed32: Uint32(3232),
+		SkipFixed64: Uint64(6464),
+		SkipString:  String("skipper"),
+		Skipgroup: &GoSkipTest_SkipGroup{
+			GroupInt32:  Int32(75),
+			GroupString: String("wxyz"),
+		},
+	}
+
+	pbd := new(GoTestField)
+	p := NewBuffer(nil)
+	p.Marshal(pb)
+	p.Marshal(skip)
+	p2 := NewBuffer(nil)
+
+	b.StartTimer()
+	for i := 0; i < b.N; i++ {
+		p2.SetBuf(p.Bytes())
+		p2.Unmarshal(pbd)
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/any_test.go b/vendor/github.com/golang/protobuf/proto/any_test.go
new file mode 100644
index 000000000..1a3c22ed4
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/any_test.go
@@ -0,0 +1,300 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2016 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto_test
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+
+	pb "github.com/golang/protobuf/proto/proto3_proto"
+	testpb "github.com/golang/protobuf/proto/testdata"
+	anypb "github.com/golang/protobuf/ptypes/any"
+)
+
+var (
+	expandedMarshaler        = proto.TextMarshaler{ExpandAny: true}
+	expandedCompactMarshaler = proto.TextMarshaler{Compact: true, ExpandAny: true}
+)
+
+// anyEqual reports whether two messages which may be google.protobuf.Any or may
+// contain google.protobuf.Any fields are equal. We can't use proto.Equal for
+// comparison, because semantically equivalent messages may be marshaled to
+// binary in different tag order. Instead, trust that TextMarshaler with
+// ExpandAny option works and compare the text marshaling results.
+func anyEqual(got, want proto.Message) bool {
+	// if messages are proto.Equal, no need to marshal.
+	if proto.Equal(got, want) {
+		return true
+	}
+	g := expandedMarshaler.Text(got)
+	w := expandedMarshaler.Text(want)
+	return g == w
+}
+
+type golden struct {
+	m    proto.Message
+	t, c string
+}
+
+var goldenMessages = makeGolden()
+
+func makeGolden() []golden {
+	nested := &pb.Nested{Bunny: "Monty"}
+	nb, err := proto.Marshal(nested)
+	if err != nil {
+		panic(err)
+	}
+	m1 := &pb.Message{
+		Name:        "David",
+		ResultCount: 47,
+		Anything:    &anypb.Any{TypeUrl: "type.googleapis.com/" + proto.MessageName(nested), Value: nb},
+	}
+	m2 := &pb.Message{
+		Name:        "David",
+		ResultCount: 47,
+		Anything:    &anypb.Any{TypeUrl: "http://[::1]/type.googleapis.com/" + proto.MessageName(nested), Value: nb},
+	}
+	m3 := &pb.Message{
+		Name:        "David",
+		ResultCount: 47,
+		Anything:    &anypb.Any{TypeUrl: `type.googleapis.com/"/` + proto.MessageName(nested), Value: nb},
+	}
+	m4 := &pb.Message{
+		Name:        "David",
+		ResultCount: 47,
+		Anything:    &anypb.Any{TypeUrl: "type.googleapis.com/a/path/" + proto.MessageName(nested), Value: nb},
+	}
+	m5 := &anypb.Any{TypeUrl: "type.googleapis.com/" + proto.MessageName(nested), Value: nb}
+
+	any1 := &testpb.MyMessage{Count: proto.Int32(47), Name: proto.String("David")}
+	proto.SetExtension(any1, testpb.E_Ext_More, &testpb.Ext{Data: proto.String("foo")})
+	proto.SetExtension(any1, testpb.E_Ext_Text, proto.String("bar"))
+	any1b, err := proto.Marshal(any1)
+	if err != nil {
+		panic(err)
+	}
+	any2 := &testpb.MyMessage{Count: proto.Int32(42), Bikeshed: testpb.MyMessage_GREEN.Enum(), RepBytes: [][]byte{[]byte("roboto")}}
+	proto.SetExtension(any2, testpb.E_Ext_More, &testpb.Ext{Data: proto.String("baz")})
+	any2b, err := proto.Marshal(any2)
+	if err != nil {
+		panic(err)
+	}
+	m6 := &pb.Message{
+		Name:        "David",
+		ResultCount: 47,
+		Anything:    &anypb.Any{TypeUrl: "type.googleapis.com/" + proto.MessageName(any1), Value: any1b},
+		ManyThings: []*anypb.Any{
+			&anypb.Any{TypeUrl: "type.googleapis.com/" + proto.MessageName(any2), Value: any2b},
+			&anypb.Any{TypeUrl: "type.googleapis.com/" + proto.MessageName(any1), Value: any1b},
+		},
+	}
+
+	const (
+		m1Golden = `
+name: "David"
+result_count: 47
+anything: <
+  [type.googleapis.com/proto3_proto.Nested]: <
+    bunny: "Monty"
+  >
+>
+`
+		m2Golden = `
+name: "David"
+result_count: 47
+anything: <
+  ["http://[::1]/type.googleapis.com/proto3_proto.Nested"]: <
+    bunny: "Monty"
+  >
+>
+`
+		m3Golden = `
+name: "David"
+result_count: 47
+anything: <
+  ["type.googleapis.com/\"/proto3_proto.Nested"]: <
+    bunny: "Monty"
+  >
+>
+`
+		m4Golden = `
+name: "David"
+result_count: 47
+anything: <
+  [type.googleapis.com/a/path/proto3_proto.Nested]: <
+    bunny: "Monty"
+  >
+>
+`
+		m5Golden = `
+[type.googleapis.com/proto3_proto.Nested]: <
+  bunny: "Monty"
+>
+`
+		m6Golden = `
+name: "David"
+result_count: 47
+anything: <
+  [type.googleapis.com/testdata.MyMessage]: <
+    count: 47
+    name: "David"
+    [testdata.Ext.more]: <
+      data: "foo"
+    >
+    [testdata.Ext.text]: "bar"
+  >
+>
+many_things: <
+  [type.googleapis.com/testdata.MyMessage]: <
+    count: 42
+    bikeshed: GREEN
+    rep_bytes: "roboto"
+    [testdata.Ext.more]: <
+      data: "baz"
+    >
+  >
+>
+many_things: <
+  [type.googleapis.com/testdata.MyMessage]: <
+    count: 47
+    name: "David"
+    [testdata.Ext.more]: <
+      data: "foo"
+    >
+    [testdata.Ext.text]: "bar"
+  >
+>
+`
+	)
+	return []golden{
+		{m1, strings.TrimSpace(m1Golden) + "\n", strings.TrimSpace(compact(m1Golden)) + " "},
+		{m2, strings.TrimSpace(m2Golden) + "\n", strings.TrimSpace(compact(m2Golden)) + " "},
+		{m3, strings.TrimSpace(m3Golden) + "\n", strings.TrimSpace(compact(m3Golden)) + " "},
+		{m4, strings.TrimSpace(m4Golden) + "\n", strings.TrimSpace(compact(m4Golden)) + " "},
+		{m5, strings.TrimSpace(m5Golden) + "\n", strings.TrimSpace(compact(m5Golden)) + " "},
+		{m6, strings.TrimSpace(m6Golden) + "\n", strings.TrimSpace(compact(m6Golden)) + " "},
+	}
+}
+
+func TestMarshalGolden(t *testing.T) {
+	for _, tt := range goldenMessages {
+		if got, want := expandedMarshaler.Text(tt.m), tt.t; got != want {
+			t.Errorf("message %v: got:\n%s\nwant:\n%s", tt.m, got, want)
+		}
+		if got, want := expandedCompactMarshaler.Text(tt.m), tt.c; got != want {
+			t.Errorf("message %v: got:\n`%s`\nwant:\n`%s`", tt.m, got, want)
+		}
+	}
+}
+
+func TestUnmarshalGolden(t *testing.T) {
+	for _, tt := range goldenMessages {
+		want := tt.m
+		got := proto.Clone(tt.m)
+		got.Reset()
+		if err := proto.UnmarshalText(tt.t, got); err != nil {
+			t.Errorf("failed to unmarshal\n%s\nerror: %v", tt.t, err)
+		}
+		if !anyEqual(got, want) {
+			t.Errorf("message:\n%s\ngot:\n%s\nwant:\n%s", tt.t, got, want)
+		}
+		got.Reset()
+		if err := proto.UnmarshalText(tt.c, got); err != nil {
+			t.Errorf("failed to unmarshal\n%s\nerror: %v", tt.c, err)
+		}
+		if !anyEqual(got, want) {
+			t.Errorf("message:\n%s\ngot:\n%s\nwant:\n%s", tt.c, got, want)
+		}
+	}
+}
+
+func TestMarshalUnknownAny(t *testing.T) {
+	m := &pb.Message{
+		Anything: &anypb.Any{
+			TypeUrl: "foo",
+			Value:   []byte("bar"),
+		},
+	}
+	want := `anything: <
+  type_url: "foo"
+  value: "bar"
+>
+`
+	got := expandedMarshaler.Text(m)
+	if got != want {
+		t.Errorf("got\n`%s`\nwant\n`%s`", got, want)
+	}
+}
+
+func TestAmbiguousAny(t *testing.T) {
+	pb := &anypb.Any{}
+	err := proto.UnmarshalText(`
+	type_url: "ttt/proto3_proto.Nested"
+	value: "\n\x05Monty"
+	`, pb)
+	t.Logf("result: %v (error: %v)", expandedMarshaler.Text(pb), err)
+	if err != nil {
+		t.Errorf("failed to parse ambiguous Any message: %v", err)
+	}
+}
+
+func TestUnmarshalOverwriteAny(t *testing.T) {
+	pb := &anypb.Any{}
+	err := proto.UnmarshalText(`
+  [type.googleapis.com/a/path/proto3_proto.Nested]: <
+    bunny: "Monty"
+  >
+  [type.googleapis.com/a/path/proto3_proto.Nested]: <
+    bunny: "Rabbit of Caerbannog"
+  >
+	`, pb)
+	want := `line 7: Any message unpacked multiple times, or "type_url" already set`
+	if err.Error() != want {
+		t.Errorf("incorrect error.\nHave: %v\nWant: %v", err.Error(), want)
+	}
+}
+
+func TestUnmarshalAnyMixAndMatch(t *testing.T) {
+	pb := &anypb.Any{}
+	err := proto.UnmarshalText(`
+	value: "\n\x05Monty"
+  [type.googleapis.com/a/path/proto3_proto.Nested]: <
+    bunny: "Rabbit of Caerbannog"
+  >
+	`, pb)
+	want := `line 5: Any message unpacked multiple times, or "value" already set`
+	if err.Error() != want {
+		t.Errorf("incorrect error.\nHave: %v\nWant: %v", err.Error(), want)
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/clone.go b/vendor/github.com/golang/protobuf/proto/clone.go
new file mode 100644
index 000000000..e392575b3
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/clone.go
@@ -0,0 +1,229 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2011 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Protocol buffer deep copy and merge.
+// TODO: RawMessage.
+
+package proto
+
+import (
+	"log"
+	"reflect"
+	"strings"
+)
+
+// Clone returns a deep copy of a protocol buffer.
+func Clone(pb Message) Message {
+	in := reflect.ValueOf(pb)
+	if in.IsNil() {
+		return pb
+	}
+
+	out := reflect.New(in.Type().Elem())
+	// out is empty so a merge is a deep copy.
+	mergeStruct(out.Elem(), in.Elem())
+	return out.Interface().(Message)
+}
+
+// Merge merges src into dst.
+// Required and optional fields that are set in src will be set to that value in dst.
+// Elements of repeated fields will be appended.
+// Merge panics if src and dst are not the same type, or if dst is nil.
+func Merge(dst, src Message) {
+	in := reflect.ValueOf(src)
+	out := reflect.ValueOf(dst)
+	if out.IsNil() {
+		panic("proto: nil destination")
+	}
+	if in.Type() != out.Type() {
+		// Explicit test prior to mergeStruct so that mistyped nils will fail
+		panic("proto: type mismatch")
+	}
+	if in.IsNil() {
+		// Merging nil into non-nil is a quiet no-op
+		return
+	}
+	mergeStruct(out.Elem(), in.Elem())
+}
+
+func mergeStruct(out, in reflect.Value) {
+	sprop := GetProperties(in.Type())
+	for i := 0; i < in.NumField(); i++ {
+		f := in.Type().Field(i)
+		if strings.HasPrefix(f.Name, "XXX_") {
+			continue
+		}
+		mergeAny(out.Field(i), in.Field(i), false, sprop.Prop[i])
+	}
+
+	if emIn, ok := extendable(in.Addr().Interface()); ok {
+		emOut, _ := extendable(out.Addr().Interface())
+		mIn, muIn := emIn.extensionsRead()
+		if mIn != nil {
+			mOut := emOut.extensionsWrite()
+			muIn.Lock()
+			mergeExtension(mOut, mIn)
+			muIn.Unlock()
+		}
+	}
+
+	uf := in.FieldByName("XXX_unrecognized")
+	if !uf.IsValid() {
+		return
+	}
+	uin := uf.Bytes()
+	if len(uin) > 0 {
+		out.FieldByName("XXX_unrecognized").SetBytes(append([]byte(nil), uin...))
+	}
+}
+
+// mergeAny performs a merge between two values of the same type.
+// viaPtr indicates whether the values were indirected through a pointer (implying proto2).
+// prop is set if this is a struct field (it may be nil).
+func mergeAny(out, in reflect.Value, viaPtr bool, prop *Properties) {
+	if in.Type() == protoMessageType {
+		if !in.IsNil() {
+			if out.IsNil() {
+				out.Set(reflect.ValueOf(Clone(in.Interface().(Message))))
+			} else {
+				Merge(out.Interface().(Message), in.Interface().(Message))
+			}
+		}
+		return
+	}
+	switch in.Kind() {
+	case reflect.Bool, reflect.Float32, reflect.Float64, reflect.Int32, reflect.Int64,
+		reflect.String, reflect.Uint32, reflect.Uint64:
+		if !viaPtr && isProto3Zero(in) {
+			return
+		}
+		out.Set(in)
+	case reflect.Interface:
+		// Probably a oneof field; copy non-nil values.
+		if in.IsNil() {
+			return
+		}
+		// Allocate destination if it is not set, or set to a different type.
+		// Otherwise we will merge as normal.
+		if out.IsNil() || out.Elem().Type() != in.Elem().Type() {
+			out.Set(reflect.New(in.Elem().Elem().Type())) // interface -> *T -> T -> new(T)
+		}
+		mergeAny(out.Elem(), in.Elem(), false, nil)
+	case reflect.Map:
+		if in.Len() == 0 {
+			return
+		}
+		if out.IsNil() {
+			out.Set(reflect.MakeMap(in.Type()))
+		}
+		// For maps with value types of *T or []byte we need to deep copy each value.
+		elemKind := in.Type().Elem().Kind()
+		for _, key := range in.MapKeys() {
+			var val reflect.Value
+			switch elemKind {
+			case reflect.Ptr:
+				val = reflect.New(in.Type().Elem().Elem())
+				mergeAny(val, in.MapIndex(key), false, nil)
+			case reflect.Slice:
+				val = in.MapIndex(key)
+				val = reflect.ValueOf(append([]byte{}, val.Bytes()...))
+			default:
+				val = in.MapIndex(key)
+			}
+			out.SetMapIndex(key, val)
+		}
+	case reflect.Ptr:
+		if in.IsNil() {
+			return
+		}
+		if out.IsNil() {
+			out.Set(reflect.New(in.Elem().Type()))
+		}
+		mergeAny(out.Elem(), in.Elem(), true, nil)
+	case reflect.Slice:
+		if in.IsNil() {
+			return
+		}
+		if in.Type().Elem().Kind() == reflect.Uint8 {
+			// []byte is a scalar bytes field, not a repeated field.
+
+			// Edge case: if this is in a proto3 message, a zero length
+			// bytes field is considered the zero value, and should not
+			// be merged.
+			if prop != nil && prop.proto3 && in.Len() == 0 {
+				return
+			}
+
+			// Make a deep copy.
+			// Append to []byte{} instead of []byte(nil) so that we never end up
+			// with a nil result.
+			out.SetBytes(append([]byte{}, in.Bytes()...))
+			return
+		}
+		n := in.Len()
+		if out.IsNil() {
+			out.Set(reflect.MakeSlice(in.Type(), 0, n))
+		}
+		switch in.Type().Elem().Kind() {
+		case reflect.Bool, reflect.Float32, reflect.Float64, reflect.Int32, reflect.Int64,
+			reflect.String, reflect.Uint32, reflect.Uint64:
+			out.Set(reflect.AppendSlice(out, in))
+		default:
+			for i := 0; i < n; i++ {
+				x := reflect.Indirect(reflect.New(in.Type().Elem()))
+				mergeAny(x, in.Index(i), false, nil)
+				out.Set(reflect.Append(out, x))
+			}
+		}
+	case reflect.Struct:
+		mergeStruct(out, in)
+	default:
+		// unknown type, so not a protocol buffer
+		log.Printf("proto: don't know how to copy %v", in)
+	}
+}
+
+func mergeExtension(out, in map[int32]Extension) {
+	for extNum, eIn := range in {
+		eOut := Extension{desc: eIn.desc}
+		if eIn.value != nil {
+			v := reflect.New(reflect.TypeOf(eIn.value)).Elem()
+			mergeAny(v, reflect.ValueOf(eIn.value), false, nil)
+			eOut.value = v.Interface()
+		}
+		if eIn.enc != nil {
+			eOut.enc = make([]byte, len(eIn.enc))
+			copy(eOut.enc, eIn.enc)
+		}
+
+		out[extNum] = eOut
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/clone_test.go b/vendor/github.com/golang/protobuf/proto/clone_test.go
new file mode 100644
index 000000000..f607ff49e
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/clone_test.go
@@ -0,0 +1,300 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2011 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto_test
+
+import (
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+
+	proto3pb "github.com/golang/protobuf/proto/proto3_proto"
+	pb "github.com/golang/protobuf/proto/testdata"
+)
+
+var cloneTestMessage = &pb.MyMessage{
+	Count: proto.Int32(42),
+	Name:  proto.String("Dave"),
+	Pet:   []string{"bunny", "kitty", "horsey"},
+	Inner: &pb.InnerMessage{
+		Host:      proto.String("niles"),
+		Port:      proto.Int32(9099),
+		Connected: proto.Bool(true),
+	},
+	Others: []*pb.OtherMessage{
+		{
+			Value: []byte("some bytes"),
+		},
+	},
+	Somegroup: &pb.MyMessage_SomeGroup{
+		GroupField: proto.Int32(6),
+	},
+	RepBytes: [][]byte{[]byte("sham"), []byte("wow")},
+}
+
+func init() {
+	ext := &pb.Ext{
+		Data: proto.String("extension"),
+	}
+	if err := proto.SetExtension(cloneTestMessage, pb.E_Ext_More, ext); err != nil {
+		panic("SetExtension: " + err.Error())
+	}
+}
+
+func TestClone(t *testing.T) {
+	m := proto.Clone(cloneTestMessage).(*pb.MyMessage)
+	if !proto.Equal(m, cloneTestMessage) {
+		t.Errorf("Clone(%v) = %v", cloneTestMessage, m)
+	}
+
+	// Verify it was a deep copy.
+	*m.Inner.Port++
+	if proto.Equal(m, cloneTestMessage) {
+		t.Error("Mutating clone changed the original")
+	}
+	// Byte fields and repeated fields should be copied.
+	if &m.Pet[0] == &cloneTestMessage.Pet[0] {
+		t.Error("Pet: repeated field not copied")
+	}
+	if &m.Others[0] == &cloneTestMessage.Others[0] {
+		t.Error("Others: repeated field not copied")
+	}
+	if &m.Others[0].Value[0] == &cloneTestMessage.Others[0].Value[0] {
+		t.Error("Others[0].Value: bytes field not copied")
+	}
+	if &m.RepBytes[0] == &cloneTestMessage.RepBytes[0] {
+		t.Error("RepBytes: repeated field not copied")
+	}
+	if &m.RepBytes[0][0] == &cloneTestMessage.RepBytes[0][0] {
+		t.Error("RepBytes[0]: bytes field not copied")
+	}
+}
+
+func TestCloneNil(t *testing.T) {
+	var m *pb.MyMessage
+	if c := proto.Clone(m); !proto.Equal(m, c) {
+		t.Errorf("Clone(%v) = %v", m, c)
+	}
+}
+
+var mergeTests = []struct {
+	src, dst, want proto.Message
+}{
+	{
+		src: &pb.MyMessage{
+			Count: proto.Int32(42),
+		},
+		dst: &pb.MyMessage{
+			Name: proto.String("Dave"),
+		},
+		want: &pb.MyMessage{
+			Count: proto.Int32(42),
+			Name:  proto.String("Dave"),
+		},
+	},
+	{
+		src: &pb.MyMessage{
+			Inner: &pb.InnerMessage{
+				Host:      proto.String("hey"),
+				Connected: proto.Bool(true),
+			},
+			Pet: []string{"horsey"},
+			Others: []*pb.OtherMessage{
+				{
+					Value: []byte("some bytes"),
+				},
+			},
+		},
+		dst: &pb.MyMessage{
+			Inner: &pb.InnerMessage{
+				Host: proto.String("niles"),
+				Port: proto.Int32(9099),
+			},
+			Pet: []string{"bunny", "kitty"},
+			Others: []*pb.OtherMessage{
+				{
+					Key: proto.Int64(31415926535),
+				},
+				{
+					// Explicitly test a src=nil field
+					Inner: nil,
+				},
+			},
+		},
+		want: &pb.MyMessage{
+			Inner: &pb.InnerMessage{
+				Host:      proto.String("hey"),
+				Connected: proto.Bool(true),
+				Port:      proto.Int32(9099),
+			},
+			Pet: []string{"bunny", "kitty", "horsey"},
+			Others: []*pb.OtherMessage{
+				{
+					Key: proto.Int64(31415926535),
+				},
+				{},
+				{
+					Value: []byte("some bytes"),
+				},
+			},
+		},
+	},
+	{
+		src: &pb.MyMessage{
+			RepBytes: [][]byte{[]byte("wow")},
+		},
+		dst: &pb.MyMessage{
+			Somegroup: &pb.MyMessage_SomeGroup{
+				GroupField: proto.Int32(6),
+			},
+			RepBytes: [][]byte{[]byte("sham")},
+		},
+		want: &pb.MyMessage{
+			Somegroup: &pb.MyMessage_SomeGroup{
+				GroupField: proto.Int32(6),
+			},
+			RepBytes: [][]byte{[]byte("sham"), []byte("wow")},
+		},
+	},
+	// Check that a scalar bytes field replaces rather than appends.
+	{
+		src:  &pb.OtherMessage{Value: []byte("foo")},
+		dst:  &pb.OtherMessage{Value: []byte("bar")},
+		want: &pb.OtherMessage{Value: []byte("foo")},
+	},
+	{
+		src: &pb.MessageWithMap{
+			NameMapping: map[int32]string{6: "Nigel"},
+			MsgMapping: map[int64]*pb.FloatingPoint{
+				0x4001: &pb.FloatingPoint{F: proto.Float64(2.0)},
+				0x4002: &pb.FloatingPoint{
+					F: proto.Float64(2.0),
+				},
+			},
+			ByteMapping: map[bool][]byte{true: []byte("wowsa")},
+		},
+		dst: &pb.MessageWithMap{
+			NameMapping: map[int32]string{
+				6: "Bruce", // should be overwritten
+				7: "Andrew",
+			},
+			MsgMapping: map[int64]*pb.FloatingPoint{
+				0x4002: &pb.FloatingPoint{
+					F:     proto.Float64(3.0),
+					Exact: proto.Bool(true),
+				}, // the entire message should be overwritten
+			},
+		},
+		want: &pb.MessageWithMap{
+			NameMapping: map[int32]string{
+				6: "Nigel",
+				7: "Andrew",
+			},
+			MsgMapping: map[int64]*pb.FloatingPoint{
+				0x4001: &pb.FloatingPoint{F: proto.Float64(2.0)},
+				0x4002: &pb.FloatingPoint{
+					F: proto.Float64(2.0),
+				},
+			},
+			ByteMapping: map[bool][]byte{true: []byte("wowsa")},
+		},
+	},
+	// proto3 shouldn't merge zero values,
+	// in the same way that proto2 shouldn't merge nils.
+	{
+		src: &proto3pb.Message{
+			Name: "Aaron",
+			Data: []byte(""), // zero value, but not nil
+		},
+		dst: &proto3pb.Message{
+			HeightInCm: 176,
+			Data:       []byte("texas!"),
+		},
+		want: &proto3pb.Message{
+			Name:       "Aaron",
+			HeightInCm: 176,
+			Data:       []byte("texas!"),
+		},
+	},
+	// Oneof fields should merge by assignment.
+	{
+		src: &pb.Communique{
+			Union: &pb.Communique_Number{41},
+		},
+		dst: &pb.Communique{
+			Union: &pb.Communique_Name{"Bobby Tables"},
+		},
+		want: &pb.Communique{
+			Union: &pb.Communique_Number{41},
+		},
+	},
+	// Oneof nil is the same as not set.
+	{
+		src: &pb.Communique{},
+		dst: &pb.Communique{
+			Union: &pb.Communique_Name{"Bobby Tables"},
+		},
+		want: &pb.Communique{
+			Union: &pb.Communique_Name{"Bobby Tables"},
+		},
+	},
+	{
+		src: &proto3pb.Message{
+			Terrain: map[string]*proto3pb.Nested{
+				"kay_a": &proto3pb.Nested{Cute: true},      // replace
+				"kay_b": &proto3pb.Nested{Bunny: "rabbit"}, // insert
+			},
+		},
+		dst: &proto3pb.Message{
+			Terrain: map[string]*proto3pb.Nested{
+				"kay_a": &proto3pb.Nested{Bunny: "lost"},  // replaced
+				"kay_c": &proto3pb.Nested{Bunny: "bunny"}, // keep
+			},
+		},
+		want: &proto3pb.Message{
+			Terrain: map[string]*proto3pb.Nested{
+				"kay_a": &proto3pb.Nested{Cute: true},
+				"kay_b": &proto3pb.Nested{Bunny: "rabbit"},
+				"kay_c": &proto3pb.Nested{Bunny: "bunny"},
+			},
+		},
+	},
+}
+
+func TestMerge(t *testing.T) {
+	for _, m := range mergeTests {
+		got := proto.Clone(m.dst)
+		proto.Merge(got, m.src)
+		if !proto.Equal(got, m.want) {
+			t.Errorf("Merge(%v, %v)\n got %v\nwant %v\n", m.dst, m.src, got, m.want)
+		}
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/decode.go b/vendor/github.com/golang/protobuf/proto/decode.go
new file mode 100644
index 000000000..aa207298f
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/decode.go
@@ -0,0 +1,970 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto
+
+/*
+ * Routines for decoding protocol buffer data to construct in-memory representations.
+ */
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"reflect"
+)
+
+// errOverflow is returned when an integer is too large to be represented.
+var errOverflow = errors.New("proto: integer overflow")
+
+// ErrInternalBadWireType is returned by generated code when an incorrect
+// wire type is encountered. It does not get returned to user code.
+var ErrInternalBadWireType = errors.New("proto: internal error: bad wiretype for oneof")
+
+// The fundamental decoders that interpret bytes on the wire.
+// Those that take integer types all return uint64 and are
+// therefore of type valueDecoder.
+
+// DecodeVarint reads a varint-encoded integer from the slice.
+// It returns the integer and the number of bytes consumed, or
+// zero if there is not enough.
+// This is the format for the
+// int32, int64, uint32, uint64, bool, and enum
+// protocol buffer types.
+func DecodeVarint(buf []byte) (x uint64, n int) {
+	for shift := uint(0); shift < 64; shift += 7 {
+		if n >= len(buf) {
+			return 0, 0
+		}
+		b := uint64(buf[n])
+		n++
+		x |= (b & 0x7F) << shift
+		if (b & 0x80) == 0 {
+			return x, n
+		}
+	}
+
+	// The number is too large to represent in a 64-bit value.
+	return 0, 0
+}
+
+func (p *Buffer) decodeVarintSlow() (x uint64, err error) {
+	i := p.index
+	l := len(p.buf)
+
+	for shift := uint(0); shift < 64; shift += 7 {
+		if i >= l {
+			err = io.ErrUnexpectedEOF
+			return
+		}
+		b := p.buf[i]
+		i++
+		x |= (uint64(b) & 0x7F) << shift
+		if b < 0x80 {
+			p.index = i
+			return
+		}
+	}
+
+	// The number is too large to represent in a 64-bit value.
+	err = errOverflow
+	return
+}
+
+// DecodeVarint reads a varint-encoded integer from the Buffer.
+// This is the format for the
+// int32, int64, uint32, uint64, bool, and enum
+// protocol buffer types.
+func (p *Buffer) DecodeVarint() (x uint64, err error) {
+	i := p.index
+	buf := p.buf
+
+	if i >= len(buf) {
+		return 0, io.ErrUnexpectedEOF
+	} else if buf[i] < 0x80 {
+		p.index++
+		return uint64(buf[i]), nil
+	} else if len(buf)-i < 10 {
+		return p.decodeVarintSlow()
+	}
+
+	var b uint64
+	// we already checked the first byte
+	x = uint64(buf[i]) - 0x80
+	i++
+
+	b = uint64(buf[i])
+	i++
+	x += b << 7
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 7
+
+	b = uint64(buf[i])
+	i++
+	x += b << 14
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 14
+
+	b = uint64(buf[i])
+	i++
+	x += b << 21
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 21
+
+	b = uint64(buf[i])
+	i++
+	x += b << 28
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 28
+
+	b = uint64(buf[i])
+	i++
+	x += b << 35
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 35
+
+	b = uint64(buf[i])
+	i++
+	x += b << 42
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 42
+
+	b = uint64(buf[i])
+	i++
+	x += b << 49
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 49
+
+	b = uint64(buf[i])
+	i++
+	x += b << 56
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 56
+
+	b = uint64(buf[i])
+	i++
+	x += b << 63
+	if b&0x80 == 0 {
+		goto done
+	}
+	// x -= 0x80 << 63 // Always zero.
+
+	return 0, errOverflow
+
+done:
+	p.index = i
+	return x, nil
+}
+
+// DecodeFixed64 reads a 64-bit integer from the Buffer.
+// This is the format for the
+// fixed64, sfixed64, and double protocol buffer types.
+func (p *Buffer) DecodeFixed64() (x uint64, err error) {
+	// x, err already 0
+	i := p.index + 8
+	if i < 0 || i > len(p.buf) {
+		err = io.ErrUnexpectedEOF
+		return
+	}
+	p.index = i
+
+	x = uint64(p.buf[i-8])
+	x |= uint64(p.buf[i-7]) << 8
+	x |= uint64(p.buf[i-6]) << 16
+	x |= uint64(p.buf[i-5]) << 24
+	x |= uint64(p.buf[i-4]) << 32
+	x |= uint64(p.buf[i-3]) << 40
+	x |= uint64(p.buf[i-2]) << 48
+	x |= uint64(p.buf[i-1]) << 56
+	return
+}
+
+// DecodeFixed32 reads a 32-bit integer from the Buffer.
+// This is the format for the
+// fixed32, sfixed32, and float protocol buffer types.
+func (p *Buffer) DecodeFixed32() (x uint64, err error) {
+	// x, err already 0
+	i := p.index + 4
+	if i < 0 || i > len(p.buf) {
+		err = io.ErrUnexpectedEOF
+		return
+	}
+	p.index = i
+
+	x = uint64(p.buf[i-4])
+	x |= uint64(p.buf[i-3]) << 8
+	x |= uint64(p.buf[i-2]) << 16
+	x |= uint64(p.buf[i-1]) << 24
+	return
+}
+
+// DecodeZigzag64 reads a zigzag-encoded 64-bit integer
+// from the Buffer.
+// This is the format used for the sint64 protocol buffer type.
+func (p *Buffer) DecodeZigzag64() (x uint64, err error) {
+	x, err = p.DecodeVarint()
+	if err != nil {
+		return
+	}
+	x = (x >> 1) ^ uint64((int64(x&1)<<63)>>63)
+	return
+}
+
+// DecodeZigzag32 reads a zigzag-encoded 32-bit integer
+// from  the Buffer.
+// This is the format used for the sint32 protocol buffer type.
+func (p *Buffer) DecodeZigzag32() (x uint64, err error) {
+	x, err = p.DecodeVarint()
+	if err != nil {
+		return
+	}
+	x = uint64((uint32(x) >> 1) ^ uint32((int32(x&1)<<31)>>31))
+	return
+}
+
+// These are not ValueDecoders: they produce an array of bytes or a string.
+// bytes, embedded messages
+
+// DecodeRawBytes reads a count-delimited byte buffer from the Buffer.
+// This is the format used for the bytes protocol buffer
+// type and for embedded messages.
+func (p *Buffer) DecodeRawBytes(alloc bool) (buf []byte, err error) {
+	n, err := p.DecodeVarint()
+	if err != nil {
+		return nil, err
+	}
+
+	nb := int(n)
+	if nb < 0 {
+		return nil, fmt.Errorf("proto: bad byte length %d", nb)
+	}
+	end := p.index + nb
+	if end < p.index || end > len(p.buf) {
+		return nil, io.ErrUnexpectedEOF
+	}
+
+	if !alloc {
+		// todo: check if can get more uses of alloc=false
+		buf = p.buf[p.index:end]
+		p.index += nb
+		return
+	}
+
+	buf = make([]byte, nb)
+	copy(buf, p.buf[p.index:])
+	p.index += nb
+	return
+}
+
+// DecodeStringBytes reads an encoded string from the Buffer.
+// This is the format used for the proto2 string type.
+func (p *Buffer) DecodeStringBytes() (s string, err error) {
+	buf, err := p.DecodeRawBytes(false)
+	if err != nil {
+		return
+	}
+	return string(buf), nil
+}
+
+// Skip the next item in the buffer. Its wire type is decoded and presented as an argument.
+// If the protocol buffer has extensions, and the field matches, add it as an extension.
+// Otherwise, if the XXX_unrecognized field exists, append the skipped data there.
+func (o *Buffer) skipAndSave(t reflect.Type, tag, wire int, base structPointer, unrecField field) error {
+	oi := o.index
+
+	err := o.skip(t, tag, wire)
+	if err != nil {
+		return err
+	}
+
+	if !unrecField.IsValid() {
+		return nil
+	}
+
+	ptr := structPointer_Bytes(base, unrecField)
+
+	// Add the skipped field to struct field
+	obuf := o.buf
+
+	o.buf = *ptr
+	o.EncodeVarint(uint64(tag<<3 | wire))
+	*ptr = append(o.buf, obuf[oi:o.index]...)
+
+	o.buf = obuf
+
+	return nil
+}
+
+// Skip the next item in the buffer. Its wire type is decoded and presented as an argument.
+func (o *Buffer) skip(t reflect.Type, tag, wire int) error {
+
+	var u uint64
+	var err error
+
+	switch wire {
+	case WireVarint:
+		_, err = o.DecodeVarint()
+	case WireFixed64:
+		_, err = o.DecodeFixed64()
+	case WireBytes:
+		_, err = o.DecodeRawBytes(false)
+	case WireFixed32:
+		_, err = o.DecodeFixed32()
+	case WireStartGroup:
+		for {
+			u, err = o.DecodeVarint()
+			if err != nil {
+				break
+			}
+			fwire := int(u & 0x7)
+			if fwire == WireEndGroup {
+				break
+			}
+			ftag := int(u >> 3)
+			err = o.skip(t, ftag, fwire)
+			if err != nil {
+				break
+			}
+		}
+	default:
+		err = fmt.Errorf("proto: can't skip unknown wire type %d for %s", wire, t)
+	}
+	return err
+}
+
+// Unmarshaler is the interface representing objects that can
+// unmarshal themselves.  The method should reset the receiver before
+// decoding starts.  The argument points to data that may be
+// overwritten, so implementations should not keep references to the
+// buffer.
+type Unmarshaler interface {
+	Unmarshal([]byte) error
+}
+
+// Unmarshal parses the protocol buffer representation in buf and places the
+// decoded result in pb.  If the struct underlying pb does not match
+// the data in buf, the results can be unpredictable.
+//
+// Unmarshal resets pb before starting to unmarshal, so any
+// existing data in pb is always removed. Use UnmarshalMerge
+// to preserve and append to existing data.
+func Unmarshal(buf []byte, pb Message) error {
+	pb.Reset()
+	return UnmarshalMerge(buf, pb)
+}
+
+// UnmarshalMerge parses the protocol buffer representation in buf and
+// writes the decoded result to pb.  If the struct underlying pb does not match
+// the data in buf, the results can be unpredictable.
+//
+// UnmarshalMerge merges into existing data in pb.
+// Most code should use Unmarshal instead.
+func UnmarshalMerge(buf []byte, pb Message) error {
+	// If the object can unmarshal itself, let it.
+	if u, ok := pb.(Unmarshaler); ok {
+		return u.Unmarshal(buf)
+	}
+	return NewBuffer(buf).Unmarshal(pb)
+}
+
+// DecodeMessage reads a count-delimited message from the Buffer.
+func (p *Buffer) DecodeMessage(pb Message) error {
+	enc, err := p.DecodeRawBytes(false)
+	if err != nil {
+		return err
+	}
+	return NewBuffer(enc).Unmarshal(pb)
+}
+
+// DecodeGroup reads a tag-delimited group from the Buffer.
+func (p *Buffer) DecodeGroup(pb Message) error {
+	typ, base, err := getbase(pb)
+	if err != nil {
+		return err
+	}
+	return p.unmarshalType(typ.Elem(), GetProperties(typ.Elem()), true, base)
+}
+
+// Unmarshal parses the protocol buffer representation in the
+// Buffer and places the decoded result in pb.  If the struct
+// underlying pb does not match the data in the buffer, the results can be
+// unpredictable.
+//
+// Unlike proto.Unmarshal, this does not reset pb before starting to unmarshal.
+func (p *Buffer) Unmarshal(pb Message) error {
+	// If the object can unmarshal itself, let it.
+	if u, ok := pb.(Unmarshaler); ok {
+		err := u.Unmarshal(p.buf[p.index:])
+		p.index = len(p.buf)
+		return err
+	}
+
+	typ, base, err := getbase(pb)
+	if err != nil {
+		return err
+	}
+
+	err = p.unmarshalType(typ.Elem(), GetProperties(typ.Elem()), false, base)
+
+	if collectStats {
+		stats.Decode++
+	}
+
+	return err
+}
+
+// unmarshalType does the work of unmarshaling a structure.
+func (o *Buffer) unmarshalType(st reflect.Type, prop *StructProperties, is_group bool, base structPointer) error {
+	var state errorState
+	required, reqFields := prop.reqCount, uint64(0)
+
+	var err error
+	for err == nil && o.index < len(o.buf) {
+		oi := o.index
+		var u uint64
+		u, err = o.DecodeVarint()
+		if err != nil {
+			break
+		}
+		wire := int(u & 0x7)
+		if wire == WireEndGroup {
+			if is_group {
+				if required > 0 {
+					// Not enough information to determine the exact field.
+					// (See below.)
+					return &RequiredNotSetError{"{Unknown}"}
+				}
+				return nil // input is satisfied
+			}
+			return fmt.Errorf("proto: %s: wiretype end group for non-group", st)
+		}
+		tag := int(u >> 3)
+		if tag <= 0 {
+			return fmt.Errorf("proto: %s: illegal tag %d (wire type %d)", st, tag, wire)
+		}
+		fieldnum, ok := prop.decoderTags.get(tag)
+		if !ok {
+			// Maybe it's an extension?
+			if prop.extendable {
+				if e, _ := extendable(structPointer_Interface(base, st)); isExtensionField(e, int32(tag)) {
+					if err = o.skip(st, tag, wire); err == nil {
+						extmap := e.extensionsWrite()
+						ext := extmap[int32(tag)] // may be missing
+						ext.enc = append(ext.enc, o.buf[oi:o.index]...)
+						extmap[int32(tag)] = ext
+					}
+					continue
+				}
+			}
+			// Maybe it's a oneof?
+			if prop.oneofUnmarshaler != nil {
+				m := structPointer_Interface(base, st).(Message)
+				// First return value indicates whether tag is a oneof field.
+				ok, err = prop.oneofUnmarshaler(m, tag, wire, o)
+				if err == ErrInternalBadWireType {
+					// Map the error to something more descriptive.
+					// Do the formatting here to save generated code space.
+					err = fmt.Errorf("bad wiretype for oneof field in %T", m)
+				}
+				if ok {
+					continue
+				}
+			}
+			err = o.skipAndSave(st, tag, wire, base, prop.unrecField)
+			continue
+		}
+		p := prop.Prop[fieldnum]
+
+		if p.dec == nil {
+			fmt.Fprintf(os.Stderr, "proto: no protobuf decoder for %s.%s\n", st, st.Field(fieldnum).Name)
+			continue
+		}
+		dec := p.dec
+		if wire != WireStartGroup && wire != p.WireType {
+			if wire == WireBytes && p.packedDec != nil {
+				// a packable field
+				dec = p.packedDec
+			} else {
+				err = fmt.Errorf("proto: bad wiretype for field %s.%s: got wiretype %d, want %d", st, st.Field(fieldnum).Name, wire, p.WireType)
+				continue
+			}
+		}
+		decErr := dec(o, p, base)
+		if decErr != nil && !state.shouldContinue(decErr, p) {
+			err = decErr
+		}
+		if err == nil && p.Required {
+			// Successfully decoded a required field.
+			if tag <= 64 {
+				// use bitmap for fields 1-64 to catch field reuse.
+				var mask uint64 = 1 << uint64(tag-1)
+				if reqFields&mask == 0 {
+					// new required field
+					reqFields |= mask
+					required--
+				}
+			} else {
+				// This is imprecise. It can be fooled by a required field
+				// with a tag > 64 that is encoded twice; that's very rare.
+				// A fully correct implementation would require allocating
+				// a data structure, which we would like to avoid.
+				required--
+			}
+		}
+	}
+	if err == nil {
+		if is_group {
+			return io.ErrUnexpectedEOF
+		}
+		if state.err != nil {
+			return state.err
+		}
+		if required > 0 {
+			// Not enough information to determine the exact field. If we use extra
+			// CPU, we could determine the field only if the missing required field
+			// has a tag <= 64 and we check reqFields.
+			return &RequiredNotSetError{"{Unknown}"}
+		}
+	}
+	return err
+}
+
+// Individual type decoders
+// For each,
+//	u is the decoded value,
+//	v is a pointer to the field (pointer) in the struct
+
+// Sizes of the pools to allocate inside the Buffer.
+// The goal is modest amortization and allocation
+// on at least 16-byte boundaries.
+const (
+	boolPoolSize   = 16
+	uint32PoolSize = 8
+	uint64PoolSize = 4
+)
+
+// Decode a bool.
+func (o *Buffer) dec_bool(p *Properties, base structPointer) error {
+	u, err := p.valDec(o)
+	if err != nil {
+		return err
+	}
+	if len(o.bools) == 0 {
+		o.bools = make([]bool, boolPoolSize)
+	}
+	o.bools[0] = u != 0
+	*structPointer_Bool(base, p.field) = &o.bools[0]
+	o.bools = o.bools[1:]
+	return nil
+}
+
+func (o *Buffer) dec_proto3_bool(p *Properties, base structPointer) error {
+	u, err := p.valDec(o)
+	if err != nil {
+		return err
+	}
+	*structPointer_BoolVal(base, p.field) = u != 0
+	return nil
+}
+
+// Decode an int32.
+func (o *Buffer) dec_int32(p *Properties, base structPointer) error {
+	u, err := p.valDec(o)
+	if err != nil {
+		return err
+	}
+	word32_Set(structPointer_Word32(base, p.field), o, uint32(u))
+	return nil
+}
+
+func (o *Buffer) dec_proto3_int32(p *Properties, base structPointer) error {
+	u, err := p.valDec(o)
+	if err != nil {
+		return err
+	}
+	word32Val_Set(structPointer_Word32Val(base, p.field), uint32(u))
+	return nil
+}
+
+// Decode an int64.
+func (o *Buffer) dec_int64(p *Properties, base structPointer) error {
+	u, err := p.valDec(o)
+	if err != nil {
+		return err
+	}
+	word64_Set(structPointer_Word64(base, p.field), o, u)
+	return nil
+}
+
+func (o *Buffer) dec_proto3_int64(p *Properties, base structPointer) error {
+	u, err := p.valDec(o)
+	if err != nil {
+		return err
+	}
+	word64Val_Set(structPointer_Word64Val(base, p.field), o, u)
+	return nil
+}
+
+// Decode a string.
+func (o *Buffer) dec_string(p *Properties, base structPointer) error {
+	s, err := o.DecodeStringBytes()
+	if err != nil {
+		return err
+	}
+	*structPointer_String(base, p.field) = &s
+	return nil
+}
+
+func (o *Buffer) dec_proto3_string(p *Properties, base structPointer) error {
+	s, err := o.DecodeStringBytes()
+	if err != nil {
+		return err
+	}
+	*structPointer_StringVal(base, p.field) = s
+	return nil
+}
+
+// Decode a slice of bytes ([]byte).
+func (o *Buffer) dec_slice_byte(p *Properties, base structPointer) error {
+	b, err := o.DecodeRawBytes(true)
+	if err != nil {
+		return err
+	}
+	*structPointer_Bytes(base, p.field) = b
+	return nil
+}
+
+// Decode a slice of bools ([]bool).
+func (o *Buffer) dec_slice_bool(p *Properties, base structPointer) error {
+	u, err := p.valDec(o)
+	if err != nil {
+		return err
+	}
+	v := structPointer_BoolSlice(base, p.field)
+	*v = append(*v, u != 0)
+	return nil
+}
+
+// Decode a slice of bools ([]bool) in packed format.
+func (o *Buffer) dec_slice_packed_bool(p *Properties, base structPointer) error {
+	v := structPointer_BoolSlice(base, p.field)
+
+	nn, err := o.DecodeVarint()
+	if err != nil {
+		return err
+	}
+	nb := int(nn) // number of bytes of encoded bools
+	fin := o.index + nb
+	if fin < o.index {
+		return errOverflow
+	}
+
+	y := *v
+	for o.index < fin {
+		u, err := p.valDec(o)
+		if err != nil {
+			return err
+		}
+		y = append(y, u != 0)
+	}
+
+	*v = y
+	return nil
+}
+
+// Decode a slice of int32s ([]int32).
+func (o *Buffer) dec_slice_int32(p *Properties, base structPointer) error {
+	u, err := p.valDec(o)
+	if err != nil {
+		return err
+	}
+	structPointer_Word32Slice(base, p.field).Append(uint32(u))
+	return nil
+}
+
+// Decode a slice of int32s ([]int32) in packed format.
+func (o *Buffer) dec_slice_packed_int32(p *Properties, base structPointer) error {
+	v := structPointer_Word32Slice(base, p.field)
+
+	nn, err := o.DecodeVarint()
+	if err != nil {
+		return err
+	}
+	nb := int(nn) // number of bytes of encoded int32s
+
+	fin := o.index + nb
+	if fin < o.index {
+		return errOverflow
+	}
+	for o.index < fin {
+		u, err := p.valDec(o)
+		if err != nil {
+			return err
+		}
+		v.Append(uint32(u))
+	}
+	return nil
+}
+
+// Decode a slice of int64s ([]int64).
+func (o *Buffer) dec_slice_int64(p *Properties, base structPointer) error {
+	u, err := p.valDec(o)
+	if err != nil {
+		return err
+	}
+
+	structPointer_Word64Slice(base, p.field).Append(u)
+	return nil
+}
+
+// Decode a slice of int64s ([]int64) in packed format.
+func (o *Buffer) dec_slice_packed_int64(p *Properties, base structPointer) error {
+	v := structPointer_Word64Slice(base, p.field)
+
+	nn, err := o.DecodeVarint()
+	if err != nil {
+		return err
+	}
+	nb := int(nn) // number of bytes of encoded int64s
+
+	fin := o.index + nb
+	if fin < o.index {
+		return errOverflow
+	}
+	for o.index < fin {
+		u, err := p.valDec(o)
+		if err != nil {
+			return err
+		}
+		v.Append(u)
+	}
+	return nil
+}
+
+// Decode a slice of strings ([]string).
+func (o *Buffer) dec_slice_string(p *Properties, base structPointer) error {
+	s, err := o.DecodeStringBytes()
+	if err != nil {
+		return err
+	}
+	v := structPointer_StringSlice(base, p.field)
+	*v = append(*v, s)
+	return nil
+}
+
+// Decode a slice of slice of bytes ([][]byte).
+func (o *Buffer) dec_slice_slice_byte(p *Properties, base structPointer) error {
+	b, err := o.DecodeRawBytes(true)
+	if err != nil {
+		return err
+	}
+	v := structPointer_BytesSlice(base, p.field)
+	*v = append(*v, b)
+	return nil
+}
+
+// Decode a map field.
+func (o *Buffer) dec_new_map(p *Properties, base structPointer) error {
+	raw, err := o.DecodeRawBytes(false)
+	if err != nil {
+		return err
+	}
+	oi := o.index       // index at the end of this map entry
+	o.index -= len(raw) // move buffer back to start of map entry
+
+	mptr := structPointer_NewAt(base, p.field, p.mtype) // *map[K]V
+	if mptr.Elem().IsNil() {
+		mptr.Elem().Set(reflect.MakeMap(mptr.Type().Elem()))
+	}
+	v := mptr.Elem() // map[K]V
+
+	// Prepare addressable doubly-indirect placeholders for the key and value types.
+	// See enc_new_map for why.
+	keyptr := reflect.New(reflect.PtrTo(p.mtype.Key())).Elem() // addressable *K
+	keybase := toStructPointer(keyptr.Addr())                  // **K
+
+	var valbase structPointer
+	var valptr reflect.Value
+	switch p.mtype.Elem().Kind() {
+	case reflect.Slice:
+		// []byte
+		var dummy []byte
+		valptr = reflect.ValueOf(&dummy)  // *[]byte
+		valbase = toStructPointer(valptr) // *[]byte
+	case reflect.Ptr:
+		// message; valptr is **Msg; need to allocate the intermediate pointer
+		valptr = reflect.New(reflect.PtrTo(p.mtype.Elem())).Elem() // addressable *V
+		valptr.Set(reflect.New(valptr.Type().Elem()))
+		valbase = toStructPointer(valptr)
+	default:
+		// everything else
+		valptr = reflect.New(reflect.PtrTo(p.mtype.Elem())).Elem() // addressable *V
+		valbase = toStructPointer(valptr.Addr())                   // **V
+	}
+
+	// Decode.
+	// This parses a restricted wire format, namely the encoding of a message
+	// with two fields. See enc_new_map for the format.
+	for o.index < oi {
+		// tagcode for key and value properties are always a single byte
+		// because they have tags 1 and 2.
+		tagcode := o.buf[o.index]
+		o.index++
+		switch tagcode {
+		case p.mkeyprop.tagcode[0]:
+			if err := p.mkeyprop.dec(o, p.mkeyprop, keybase); err != nil {
+				return err
+			}
+		case p.mvalprop.tagcode[0]:
+			if err := p.mvalprop.dec(o, p.mvalprop, valbase); err != nil {
+				return err
+			}
+		default:
+			// TODO: Should we silently skip this instead?
+			return fmt.Errorf("proto: bad map data tag %d", raw[0])
+		}
+	}
+	keyelem, valelem := keyptr.Elem(), valptr.Elem()
+	if !keyelem.IsValid() {
+		keyelem = reflect.Zero(p.mtype.Key())
+	}
+	if !valelem.IsValid() {
+		valelem = reflect.Zero(p.mtype.Elem())
+	}
+
+	v.SetMapIndex(keyelem, valelem)
+	return nil
+}
+
+// Decode a group.
+func (o *Buffer) dec_struct_group(p *Properties, base structPointer) error {
+	bas := structPointer_GetStructPointer(base, p.field)
+	if structPointer_IsNil(bas) {
+		// allocate new nested message
+		bas = toStructPointer(reflect.New(p.stype))
+		structPointer_SetStructPointer(base, p.field, bas)
+	}
+	return o.unmarshalType(p.stype, p.sprop, true, bas)
+}
+
+// Decode an embedded message.
+func (o *Buffer) dec_struct_message(p *Properties, base structPointer) (err error) {
+	raw, e := o.DecodeRawBytes(false)
+	if e != nil {
+		return e
+	}
+
+	bas := structPointer_GetStructPointer(base, p.field)
+	if structPointer_IsNil(bas) {
+		// allocate new nested message
+		bas = toStructPointer(reflect.New(p.stype))
+		structPointer_SetStructPointer(base, p.field, bas)
+	}
+
+	// If the object can unmarshal itself, let it.
+	if p.isUnmarshaler {
+		iv := structPointer_Interface(bas, p.stype)
+		return iv.(Unmarshaler).Unmarshal(raw)
+	}
+
+	obuf := o.buf
+	oi := o.index
+	o.buf = raw
+	o.index = 0
+
+	err = o.unmarshalType(p.stype, p.sprop, false, bas)
+	o.buf = obuf
+	o.index = oi
+
+	return err
+}
+
+// Decode a slice of embedded messages.
+func (o *Buffer) dec_slice_struct_message(p *Properties, base structPointer) error {
+	return o.dec_slice_struct(p, false, base)
+}
+
+// Decode a slice of embedded groups.
+func (o *Buffer) dec_slice_struct_group(p *Properties, base structPointer) error {
+	return o.dec_slice_struct(p, true, base)
+}
+
+// Decode a slice of structs ([]*struct).
+func (o *Buffer) dec_slice_struct(p *Properties, is_group bool, base structPointer) error {
+	v := reflect.New(p.stype)
+	bas := toStructPointer(v)
+	structPointer_StructPointerSlice(base, p.field).Append(bas)
+
+	if is_group {
+		err := o.unmarshalType(p.stype, p.sprop, is_group, bas)
+		return err
+	}
+
+	raw, err := o.DecodeRawBytes(false)
+	if err != nil {
+		return err
+	}
+
+	// If the object can unmarshal itself, let it.
+	if p.isUnmarshaler {
+		iv := v.Interface()
+		return iv.(Unmarshaler).Unmarshal(raw)
+	}
+
+	obuf := o.buf
+	oi := o.index
+	o.buf = raw
+	o.index = 0
+
+	err = o.unmarshalType(p.stype, p.sprop, is_group, bas)
+
+	o.buf = obuf
+	o.index = oi
+
+	return err
+}
diff --git a/vendor/github.com/golang/protobuf/proto/decode_test.go b/vendor/github.com/golang/protobuf/proto/decode_test.go
new file mode 100644
index 000000000..b1f130449
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/decode_test.go
@@ -0,0 +1,256 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+	tpb "github.com/golang/protobuf/proto/proto3_proto"
+)
+
+var (
+	bytesBlackhole []byte
+	msgBlackhole   = new(tpb.Message)
+)
+
+// BenchmarkVarint32ArraySmall shows the performance on an array of small int32 fields (1 and
+// 2 bytes long).
+func BenchmarkVarint32ArraySmall(b *testing.B) {
+	for i := uint(1); i <= 10; i++ {
+		dist := genInt32Dist([7]int{0, 3, 1}, 1<<i)
+		raw, err := proto.Marshal(&tpb.Message{
+			ShortKey: dist,
+		})
+		if err != nil {
+			b.Error("wrong encode", err)
+		}
+		b.Run(fmt.Sprintf("Len%v", len(dist)), func(b *testing.B) {
+			scratchBuf := proto.NewBuffer(nil)
+			b.ResetTimer()
+			for k := 0; k < b.N; k++ {
+				scratchBuf.SetBuf(raw)
+				msgBlackhole.Reset()
+				if err := scratchBuf.Unmarshal(msgBlackhole); err != nil {
+					b.Error("wrong decode", err)
+				}
+			}
+		})
+	}
+}
+
+// BenchmarkVarint32ArrayLarge shows the performance on an array of large int32 fields (3 and
+// 4 bytes long, with a small number of 1, 2, 5 and 10 byte long versions).
+func BenchmarkVarint32ArrayLarge(b *testing.B) {
+	for i := uint(1); i <= 10; i++ {
+		dist := genInt32Dist([7]int{0, 1, 2, 4, 8, 1, 1}, 1<<i)
+		raw, err := proto.Marshal(&tpb.Message{
+			ShortKey: dist,
+		})
+		if err != nil {
+			b.Error("wrong encode", err)
+		}
+		b.Run(fmt.Sprintf("Len%v", len(dist)), func(b *testing.B) {
+			scratchBuf := proto.NewBuffer(nil)
+			b.ResetTimer()
+			for k := 0; k < b.N; k++ {
+				scratchBuf.SetBuf(raw)
+				msgBlackhole.Reset()
+				if err := scratchBuf.Unmarshal(msgBlackhole); err != nil {
+					b.Error("wrong decode", err)
+				}
+			}
+		})
+	}
+}
+
+// BenchmarkVarint64ArraySmall shows the performance on an array of small int64 fields (1 and
+// 2 bytes long).
+func BenchmarkVarint64ArraySmall(b *testing.B) {
+	for i := uint(1); i <= 10; i++ {
+		dist := genUint64Dist([11]int{0, 3, 1}, 1<<i)
+		raw, err := proto.Marshal(&tpb.Message{
+			Key: dist,
+		})
+		if err != nil {
+			b.Error("wrong encode", err)
+		}
+		b.Run(fmt.Sprintf("Len%v", len(dist)), func(b *testing.B) {
+			scratchBuf := proto.NewBuffer(nil)
+			b.ResetTimer()
+			for k := 0; k < b.N; k++ {
+				scratchBuf.SetBuf(raw)
+				msgBlackhole.Reset()
+				if err := scratchBuf.Unmarshal(msgBlackhole); err != nil {
+					b.Error("wrong decode", err)
+				}
+			}
+		})
+	}
+}
+
+// BenchmarkVarint64ArrayLarge shows the performance on an array of large int64 fields (6, 7,
+// and 8 bytes long with a small number of the other sizes).
+func BenchmarkVarint64ArrayLarge(b *testing.B) {
+	for i := uint(1); i <= 10; i++ {
+		dist := genUint64Dist([11]int{0, 1, 1, 2, 4, 8, 16, 32, 16, 1, 1}, 1<<i)
+		raw, err := proto.Marshal(&tpb.Message{
+			Key: dist,
+		})
+		if err != nil {
+			b.Error("wrong encode", err)
+		}
+		b.Run(fmt.Sprintf("Len%v", len(dist)), func(b *testing.B) {
+			scratchBuf := proto.NewBuffer(nil)
+			b.ResetTimer()
+			for k := 0; k < b.N; k++ {
+				scratchBuf.SetBuf(raw)
+				msgBlackhole.Reset()
+				if err := scratchBuf.Unmarshal(msgBlackhole); err != nil {
+					b.Error("wrong decode", err)
+				}
+			}
+		})
+	}
+}
+
+// BenchmarkVarint64ArrayMixed shows the performance of lots of small messages, each
+// containing a small number of large (3, 4, and 5 byte) repeated int64s.
+func BenchmarkVarint64ArrayMixed(b *testing.B) {
+	for i := uint(1); i <= 1<<5; i <<= 1 {
+		dist := genUint64Dist([11]int{0, 0, 0, 4, 6, 4, 0, 0, 0, 0, 0}, int(i))
+		// number of sub fields
+		for k := uint(1); k <= 1<<10; k <<= 2 {
+			msg := &tpb.Message{}
+			for m := uint(0); m < k; m++ {
+				msg.Children = append(msg.Children, &tpb.Message{
+					Key: dist,
+				})
+			}
+			raw, err := proto.Marshal(msg)
+			if err != nil {
+				b.Error("wrong encode", err)
+			}
+			b.Run(fmt.Sprintf("Fields%vLen%v", k, i), func(b *testing.B) {
+				scratchBuf := proto.NewBuffer(nil)
+				b.ResetTimer()
+				for k := 0; k < b.N; k++ {
+					scratchBuf.SetBuf(raw)
+					msgBlackhole.Reset()
+					if err := scratchBuf.Unmarshal(msgBlackhole); err != nil {
+						b.Error("wrong decode", err)
+					}
+				}
+			})
+		}
+	}
+}
+
+// genInt32Dist generates a slice of ints that will match the size distribution of dist.
+// A size of 6 corresponds to a max length varint32, which is 10 bytes.  The distribution
+// is 1-indexed. (i.e. the value at index 1 is how many 1 byte ints to create).
+func genInt32Dist(dist [7]int, count int) (dest []int32) {
+	for i := 0; i < count; i++ {
+		for k := 0; k < len(dist); k++ {
+			var num int32
+			switch k {
+			case 1:
+				num = 1<<7 - 1
+			case 2:
+				num = 1<<14 - 1
+			case 3:
+				num = 1<<21 - 1
+			case 4:
+				num = 1<<28 - 1
+			case 5:
+				num = 1<<29 - 1
+			case 6:
+				num = -1
+			}
+			for m := 0; m < dist[k]; m++ {
+				dest = append(dest, num)
+			}
+		}
+	}
+	return
+}
+
+// genUint64Dist generates a slice of ints that will match the size distribution of dist.
+// The distribution is 1-indexed. (i.e. the value at index 1 is how many 1 byte ints to create).
+func genUint64Dist(dist [11]int, count int) (dest []uint64) {
+	for i := 0; i < count; i++ {
+		for k := 0; k < len(dist); k++ {
+			var num uint64
+			switch k {
+			case 1:
+				num = 1<<7 - 1
+			case 2:
+				num = 1<<14 - 1
+			case 3:
+				num = 1<<21 - 1
+			case 4:
+				num = 1<<28 - 1
+			case 5:
+				num = 1<<35 - 1
+			case 6:
+				num = 1<<42 - 1
+			case 7:
+				num = 1<<49 - 1
+			case 8:
+				num = 1<<56 - 1
+			case 9:
+				num = 1<<63 - 1
+			case 10:
+				num = 1<<64 - 1
+			}
+			for m := 0; m < dist[k]; m++ {
+				dest = append(dest, num)
+			}
+		}
+	}
+	return
+}
+
+// BenchmarkDecodeEmpty measures the overhead of doing the minimal possible decode.
+func BenchmarkDecodeEmpty(b *testing.B) {
+	raw, err := proto.Marshal(&tpb.Message{})
+	if err != nil {
+		b.Error("wrong encode", err)
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		if err := proto.Unmarshal(raw, msgBlackhole); err != nil {
+			b.Error("wrong decode", err)
+		}
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/encode.go b/vendor/github.com/golang/protobuf/proto/encode.go
new file mode 100644
index 000000000..2b30f8462
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/encode.go
@@ -0,0 +1,1362 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto
+
+/*
+ * Routines for encoding data into the wire format for protocol buffers.
+ */
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"sort"
+)
+
+// RequiredNotSetError is the error returned if Marshal is called with
+// a protocol buffer struct whose required fields have not
+// all been initialized. It is also the error returned if Unmarshal is
+// called with an encoded protocol buffer that does not include all the
+// required fields.
+//
+// When printed, RequiredNotSetError reports the first unset required field in a
+// message. If the field cannot be precisely determined, it is reported as
+// "{Unknown}".
+type RequiredNotSetError struct {
+	field string
+}
+
+func (e *RequiredNotSetError) Error() string {
+	return fmt.Sprintf("proto: required field %q not set", e.field)
+}
+
+var (
+	// errRepeatedHasNil is the error returned if Marshal is called with
+	// a struct with a repeated field containing a nil element.
+	errRepeatedHasNil = errors.New("proto: repeated field has nil element")
+
+	// errOneofHasNil is the error returned if Marshal is called with
+	// a struct with a oneof field containing a nil element.
+	errOneofHasNil = errors.New("proto: oneof field has nil value")
+
+	// ErrNil is the error returned if Marshal is called with nil.
+	ErrNil = errors.New("proto: Marshal called with nil")
+
+	// ErrTooLarge is the error returned if Marshal is called with a
+	// message that encodes to >2GB.
+	ErrTooLarge = errors.New("proto: message encodes to over 2 GB")
+)
+
+// The fundamental encoders that put bytes on the wire.
+// Those that take integer types all accept uint64 and are
+// therefore of type valueEncoder.
+
+const maxVarintBytes = 10 // maximum length of a varint
+
+// maxMarshalSize is the largest allowed size of an encoded protobuf,
+// since C++ and Java use signed int32s for the size.
+const maxMarshalSize = 1<<31 - 1
+
+// EncodeVarint returns the varint encoding of x.
+// This is the format for the
+// int32, int64, uint32, uint64, bool, and enum
+// protocol buffer types.
+// Not used by the package itself, but helpful to clients
+// wishing to use the same encoding.
+func EncodeVarint(x uint64) []byte {
+	var buf [maxVarintBytes]byte
+	var n int
+	for n = 0; x > 127; n++ {
+		buf[n] = 0x80 | uint8(x&0x7F)
+		x >>= 7
+	}
+	buf[n] = uint8(x)
+	n++
+	return buf[0:n]
+}
+
+// EncodeVarint writes a varint-encoded integer to the Buffer.
+// This is the format for the
+// int32, int64, uint32, uint64, bool, and enum
+// protocol buffer types.
+func (p *Buffer) EncodeVarint(x uint64) error {
+	for x >= 1<<7 {
+		p.buf = append(p.buf, uint8(x&0x7f|0x80))
+		x >>= 7
+	}
+	p.buf = append(p.buf, uint8(x))
+	return nil
+}
+
+// SizeVarint returns the varint encoding size of an integer.
+func SizeVarint(x uint64) int {
+	return sizeVarint(x)
+}
+
+func sizeVarint(x uint64) (n int) {
+	for {
+		n++
+		x >>= 7
+		if x == 0 {
+			break
+		}
+	}
+	return n
+}
+
+// EncodeFixed64 writes a 64-bit integer to the Buffer.
+// This is the format for the
+// fixed64, sfixed64, and double protocol buffer types.
+func (p *Buffer) EncodeFixed64(x uint64) error {
+	p.buf = append(p.buf,
+		uint8(x),
+		uint8(x>>8),
+		uint8(x>>16),
+		uint8(x>>24),
+		uint8(x>>32),
+		uint8(x>>40),
+		uint8(x>>48),
+		uint8(x>>56))
+	return nil
+}
+
+func sizeFixed64(x uint64) int {
+	return 8
+}
+
+// EncodeFixed32 writes a 32-bit integer to the Buffer.
+// This is the format for the
+// fixed32, sfixed32, and float protocol buffer types.
+func (p *Buffer) EncodeFixed32(x uint64) error {
+	p.buf = append(p.buf,
+		uint8(x),
+		uint8(x>>8),
+		uint8(x>>16),
+		uint8(x>>24))
+	return nil
+}
+
+func sizeFixed32(x uint64) int {
+	return 4
+}
+
+// EncodeZigzag64 writes a zigzag-encoded 64-bit integer
+// to the Buffer.
+// This is the format used for the sint64 protocol buffer type.
+func (p *Buffer) EncodeZigzag64(x uint64) error {
+	// use signed number to get arithmetic right shift.
+	return p.EncodeVarint(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+}
+
+func sizeZigzag64(x uint64) int {
+	return sizeVarint(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+}
+
+// EncodeZigzag32 writes a zigzag-encoded 32-bit integer
+// to the Buffer.
+// This is the format used for the sint32 protocol buffer type.
+func (p *Buffer) EncodeZigzag32(x uint64) error {
+	// use signed number to get arithmetic right shift.
+	return p.EncodeVarint(uint64((uint32(x) << 1) ^ uint32((int32(x) >> 31))))
+}
+
+func sizeZigzag32(x uint64) int {
+	return sizeVarint(uint64((uint32(x) << 1) ^ uint32((int32(x) >> 31))))
+}
+
+// EncodeRawBytes writes a count-delimited byte buffer to the Buffer.
+// This is the format used for the bytes protocol buffer
+// type and for embedded messages.
+func (p *Buffer) EncodeRawBytes(b []byte) error {
+	p.EncodeVarint(uint64(len(b)))
+	p.buf = append(p.buf, b...)
+	return nil
+}
+
+func sizeRawBytes(b []byte) int {
+	return sizeVarint(uint64(len(b))) +
+		len(b)
+}
+
+// EncodeStringBytes writes an encoded string to the Buffer.
+// This is the format used for the proto2 string type.
+func (p *Buffer) EncodeStringBytes(s string) error {
+	p.EncodeVarint(uint64(len(s)))
+	p.buf = append(p.buf, s...)
+	return nil
+}
+
+func sizeStringBytes(s string) int {
+	return sizeVarint(uint64(len(s))) +
+		len(s)
+}
+
+// Marshaler is the interface representing objects that can marshal themselves.
+type Marshaler interface {
+	Marshal() ([]byte, error)
+}
+
+// Marshal takes the protocol buffer
+// and encodes it into the wire format, returning the data.
+func Marshal(pb Message) ([]byte, error) {
+	// Can the object marshal itself?
+	if m, ok := pb.(Marshaler); ok {
+		return m.Marshal()
+	}
+	p := NewBuffer(nil)
+	err := p.Marshal(pb)
+	if p.buf == nil && err == nil {
+		// Return a non-nil slice on success.
+		return []byte{}, nil
+	}
+	return p.buf, err
+}
+
+// EncodeMessage writes the protocol buffer to the Buffer,
+// prefixed by a varint-encoded length.
+func (p *Buffer) EncodeMessage(pb Message) error {
+	t, base, err := getbase(pb)
+	if structPointer_IsNil(base) {
+		return ErrNil
+	}
+	if err == nil {
+		var state errorState
+		err = p.enc_len_struct(GetProperties(t.Elem()), base, &state)
+	}
+	return err
+}
+
+// Marshal takes the protocol buffer
+// and encodes it into the wire format, writing the result to the
+// Buffer.
+func (p *Buffer) Marshal(pb Message) error {
+	// Can the object marshal itself?
+	if m, ok := pb.(Marshaler); ok {
+		data, err := m.Marshal()
+		p.buf = append(p.buf, data...)
+		return err
+	}
+
+	t, base, err := getbase(pb)
+	if structPointer_IsNil(base) {
+		return ErrNil
+	}
+	if err == nil {
+		err = p.enc_struct(GetProperties(t.Elem()), base)
+	}
+
+	if collectStats {
+		(stats).Encode++ // Parens are to work around a goimports bug.
+	}
+
+	if len(p.buf) > maxMarshalSize {
+		return ErrTooLarge
+	}
+	return err
+}
+
+// Size returns the encoded size of a protocol buffer.
+func Size(pb Message) (n int) {
+	// Can the object marshal itself?  If so, Size is slow.
+	// TODO: add Size to Marshaler, or add a Sizer interface.
+	if m, ok := pb.(Marshaler); ok {
+		b, _ := m.Marshal()
+		return len(b)
+	}
+
+	t, base, err := getbase(pb)
+	if structPointer_IsNil(base) {
+		return 0
+	}
+	if err == nil {
+		n = size_struct(GetProperties(t.Elem()), base)
+	}
+
+	if collectStats {
+		(stats).Size++ // Parens are to work around a goimports bug.
+	}
+
+	return
+}
+
+// Individual type encoders.
+
+// Encode a bool.
+func (o *Buffer) enc_bool(p *Properties, base structPointer) error {
+	v := *structPointer_Bool(base, p.field)
+	if v == nil {
+		return ErrNil
+	}
+	x := 0
+	if *v {
+		x = 1
+	}
+	o.buf = append(o.buf, p.tagcode...)
+	p.valEnc(o, uint64(x))
+	return nil
+}
+
+func (o *Buffer) enc_proto3_bool(p *Properties, base structPointer) error {
+	v := *structPointer_BoolVal(base, p.field)
+	if !v {
+		return ErrNil
+	}
+	o.buf = append(o.buf, p.tagcode...)
+	p.valEnc(o, 1)
+	return nil
+}
+
+func size_bool(p *Properties, base structPointer) int {
+	v := *structPointer_Bool(base, p.field)
+	if v == nil {
+		return 0
+	}
+	return len(p.tagcode) + 1 // each bool takes exactly one byte
+}
+
+func size_proto3_bool(p *Properties, base structPointer) int {
+	v := *structPointer_BoolVal(base, p.field)
+	if !v && !p.oneof {
+		return 0
+	}
+	return len(p.tagcode) + 1 // each bool takes exactly one byte
+}
+
+// Encode an int32.
+func (o *Buffer) enc_int32(p *Properties, base structPointer) error {
+	v := structPointer_Word32(base, p.field)
+	if word32_IsNil(v) {
+		return ErrNil
+	}
+	x := int32(word32_Get(v)) // permit sign extension to use full 64-bit range
+	o.buf = append(o.buf, p.tagcode...)
+	p.valEnc(o, uint64(x))
+	return nil
+}
+
+func (o *Buffer) enc_proto3_int32(p *Properties, base structPointer) error {
+	v := structPointer_Word32Val(base, p.field)
+	x := int32(word32Val_Get(v)) // permit sign extension to use full 64-bit range
+	if x == 0 {
+		return ErrNil
+	}
+	o.buf = append(o.buf, p.tagcode...)
+	p.valEnc(o, uint64(x))
+	return nil
+}
+
+func size_int32(p *Properties, base structPointer) (n int) {
+	v := structPointer_Word32(base, p.field)
+	if word32_IsNil(v) {
+		return 0
+	}
+	x := int32(word32_Get(v)) // permit sign extension to use full 64-bit range
+	n += len(p.tagcode)
+	n += p.valSize(uint64(x))
+	return
+}
+
+func size_proto3_int32(p *Properties, base structPointer) (n int) {
+	v := structPointer_Word32Val(base, p.field)
+	x := int32(word32Val_Get(v)) // permit sign extension to use full 64-bit range
+	if x == 0 && !p.oneof {
+		return 0
+	}
+	n += len(p.tagcode)
+	n += p.valSize(uint64(x))
+	return
+}
+
+// Encode a uint32.
+// Exactly the same as int32, except for no sign extension.
+func (o *Buffer) enc_uint32(p *Properties, base structPointer) error {
+	v := structPointer_Word32(base, p.field)
+	if word32_IsNil(v) {
+		return ErrNil
+	}
+	x := word32_Get(v)
+	o.buf = append(o.buf, p.tagcode...)
+	p.valEnc(o, uint64(x))
+	return nil
+}
+
+func (o *Buffer) enc_proto3_uint32(p *Properties, base structPointer) error {
+	v := structPointer_Word32Val(base, p.field)
+	x := word32Val_Get(v)
+	if x == 0 {
+		return ErrNil
+	}
+	o.buf = append(o.buf, p.tagcode...)
+	p.valEnc(o, uint64(x))
+	return nil
+}
+
+func size_uint32(p *Properties, base structPointer) (n int) {
+	v := structPointer_Word32(base, p.field)
+	if word32_IsNil(v) {
+		return 0
+	}
+	x := word32_Get(v)
+	n += len(p.tagcode)
+	n += p.valSize(uint64(x))
+	return
+}
+
+func size_proto3_uint32(p *Properties, base structPointer) (n int) {
+	v := structPointer_Word32Val(base, p.field)
+	x := word32Val_Get(v)
+	if x == 0 && !p.oneof {
+		return 0
+	}
+	n += len(p.tagcode)
+	n += p.valSize(uint64(x))
+	return
+}
+
+// Encode an int64.
+func (o *Buffer) enc_int64(p *Properties, base structPointer) error {
+	v := structPointer_Word64(base, p.field)
+	if word64_IsNil(v) {
+		return ErrNil
+	}
+	x := word64_Get(v)
+	o.buf = append(o.buf, p.tagcode...)
+	p.valEnc(o, x)
+	return nil
+}
+
+func (o *Buffer) enc_proto3_int64(p *Properties, base structPointer) error {
+	v := structPointer_Word64Val(base, p.field)
+	x := word64Val_Get(v)
+	if x == 0 {
+		return ErrNil
+	}
+	o.buf = append(o.buf, p.tagcode...)
+	p.valEnc(o, x)
+	return nil
+}
+
+func size_int64(p *Properties, base structPointer) (n int) {
+	v := structPointer_Word64(base, p.field)
+	if word64_IsNil(v) {
+		return 0
+	}
+	x := word64_Get(v)
+	n += len(p.tagcode)
+	n += p.valSize(x)
+	return
+}
+
+func size_proto3_int64(p *Properties, base structPointer) (n int) {
+	v := structPointer_Word64Val(base, p.field)
+	x := word64Val_Get(v)
+	if x == 0 && !p.oneof {
+		return 0
+	}
+	n += len(p.tagcode)
+	n += p.valSize(x)
+	return
+}
+
+// Encode a string.
+func (o *Buffer) enc_string(p *Properties, base structPointer) error {
+	v := *structPointer_String(base, p.field)
+	if v == nil {
+		return ErrNil
+	}
+	x := *v
+	o.buf = append(o.buf, p.tagcode...)
+	o.EncodeStringBytes(x)
+	return nil
+}
+
+func (o *Buffer) enc_proto3_string(p *Properties, base structPointer) error {
+	v := *structPointer_StringVal(base, p.field)
+	if v == "" {
+		return ErrNil
+	}
+	o.buf = append(o.buf, p.tagcode...)
+	o.EncodeStringBytes(v)
+	return nil
+}
+
+func size_string(p *Properties, base structPointer) (n int) {
+	v := *structPointer_String(base, p.field)
+	if v == nil {
+		return 0
+	}
+	x := *v
+	n += len(p.tagcode)
+	n += sizeStringBytes(x)
+	return
+}
+
+func size_proto3_string(p *Properties, base structPointer) (n int) {
+	v := *structPointer_StringVal(base, p.field)
+	if v == "" && !p.oneof {
+		return 0
+	}
+	n += len(p.tagcode)
+	n += sizeStringBytes(v)
+	return
+}
+
+// All protocol buffer fields are nillable, but be careful.
+func isNil(v reflect.Value) bool {
+	switch v.Kind() {
+	case reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
+		return v.IsNil()
+	}
+	return false
+}
+
+// Encode a message struct.
+func (o *Buffer) enc_struct_message(p *Properties, base structPointer) error {
+	var state errorState
+	structp := structPointer_GetStructPointer(base, p.field)
+	if structPointer_IsNil(structp) {
+		return ErrNil
+	}
+
+	// Can the object marshal itself?
+	if p.isMarshaler {
+		m := structPointer_Interface(structp, p.stype).(Marshaler)
+		data, err := m.Marshal()
+		if err != nil && !state.shouldContinue(err, nil) {
+			return err
+		}
+		o.buf = append(o.buf, p.tagcode...)
+		o.EncodeRawBytes(data)
+		return state.err
+	}
+
+	o.buf = append(o.buf, p.tagcode...)
+	return o.enc_len_struct(p.sprop, structp, &state)
+}
+
+func size_struct_message(p *Properties, base structPointer) int {
+	structp := structPointer_GetStructPointer(base, p.field)
+	if structPointer_IsNil(structp) {
+		return 0
+	}
+
+	// Can the object marshal itself?
+	if p.isMarshaler {
+		m := structPointer_Interface(structp, p.stype).(Marshaler)
+		data, _ := m.Marshal()
+		n0 := len(p.tagcode)
+		n1 := sizeRawBytes(data)
+		return n0 + n1
+	}
+
+	n0 := len(p.tagcode)
+	n1 := size_struct(p.sprop, structp)
+	n2 := sizeVarint(uint64(n1)) // size of encoded length
+	return n0 + n1 + n2
+}
+
+// Encode a group struct.
+func (o *Buffer) enc_struct_group(p *Properties, base structPointer) error {
+	var state errorState
+	b := structPointer_GetStructPointer(base, p.field)
+	if structPointer_IsNil(b) {
+		return ErrNil
+	}
+
+	o.EncodeVarint(uint64((p.Tag << 3) | WireStartGroup))
+	err := o.enc_struct(p.sprop, b)
+	if err != nil && !state.shouldContinue(err, nil) {
+		return err
+	}
+	o.EncodeVarint(uint64((p.Tag << 3) | WireEndGroup))
+	return state.err
+}
+
+func size_struct_group(p *Properties, base structPointer) (n int) {
+	b := structPointer_GetStructPointer(base, p.field)
+	if structPointer_IsNil(b) {
+		return 0
+	}
+
+	n += sizeVarint(uint64((p.Tag << 3) | WireStartGroup))
+	n += size_struct(p.sprop, b)
+	n += sizeVarint(uint64((p.Tag << 3) | WireEndGroup))
+	return
+}
+
+// Encode a slice of bools ([]bool).
+func (o *Buffer) enc_slice_bool(p *Properties, base structPointer) error {
+	s := *structPointer_BoolSlice(base, p.field)
+	l := len(s)
+	if l == 0 {
+		return ErrNil
+	}
+	for _, x := range s {
+		o.buf = append(o.buf, p.tagcode...)
+		v := uint64(0)
+		if x {
+			v = 1
+		}
+		p.valEnc(o, v)
+	}
+	return nil
+}
+
+func size_slice_bool(p *Properties, base structPointer) int {
+	s := *structPointer_BoolSlice(base, p.field)
+	l := len(s)
+	if l == 0 {
+		return 0
+	}
+	return l * (len(p.tagcode) + 1) // each bool takes exactly one byte
+}
+
+// Encode a slice of bools ([]bool) in packed format.
+func (o *Buffer) enc_slice_packed_bool(p *Properties, base structPointer) error {
+	s := *structPointer_BoolSlice(base, p.field)
+	l := len(s)
+	if l == 0 {
+		return ErrNil
+	}
+	o.buf = append(o.buf, p.tagcode...)
+	o.EncodeVarint(uint64(l)) // each bool takes exactly one byte
+	for _, x := range s {
+		v := uint64(0)
+		if x {
+			v = 1
+		}
+		p.valEnc(o, v)
+	}
+	return nil
+}
+
+func size_slice_packed_bool(p *Properties, base structPointer) (n int) {
+	s := *structPointer_BoolSlice(base, p.field)
+	l := len(s)
+	if l == 0 {
+		return 0
+	}
+	n += len(p.tagcode)
+	n += sizeVarint(uint64(l))
+	n += l // each bool takes exactly one byte
+	return
+}
+
+// Encode a slice of bytes ([]byte).
+func (o *Buffer) enc_slice_byte(p *Properties, base structPointer) error {
+	s := *structPointer_Bytes(base, p.field)
+	if s == nil {
+		return ErrNil
+	}
+	o.buf = append(o.buf, p.tagcode...)
+	o.EncodeRawBytes(s)
+	return nil
+}
+
+func (o *Buffer) enc_proto3_slice_byte(p *Properties, base structPointer) error {
+	s := *structPointer_Bytes(base, p.field)
+	if len(s) == 0 {
+		return ErrNil
+	}
+	o.buf = append(o.buf, p.tagcode...)
+	o.EncodeRawBytes(s)
+	return nil
+}
+
+func size_slice_byte(p *Properties, base structPointer) (n int) {
+	s := *structPointer_Bytes(base, p.field)
+	if s == nil && !p.oneof {
+		return 0
+	}
+	n += len(p.tagcode)
+	n += sizeRawBytes(s)
+	return
+}
+
+func size_proto3_slice_byte(p *Properties, base structPointer) (n int) {
+	s := *structPointer_Bytes(base, p.field)
+	if len(s) == 0 && !p.oneof {
+		return 0
+	}
+	n += len(p.tagcode)
+	n += sizeRawBytes(s)
+	return
+}
+
+// Encode a slice of int32s ([]int32).
+func (o *Buffer) enc_slice_int32(p *Properties, base structPointer) error {
+	s := structPointer_Word32Slice(base, p.field)
+	l := s.Len()
+	if l == 0 {
+		return ErrNil
+	}
+	for i := 0; i < l; i++ {
+		o.buf = append(o.buf, p.tagcode...)
+		x := int32(s.Index(i)) // permit sign extension to use full 64-bit range
+		p.valEnc(o, uint64(x))
+	}
+	return nil
+}
+
+func size_slice_int32(p *Properties, base structPointer) (n int) {
+	s := structPointer_Word32Slice(base, p.field)
+	l := s.Len()
+	if l == 0 {
+		return 0
+	}
+	for i := 0; i < l; i++ {
+		n += len(p.tagcode)
+		x := int32(s.Index(i)) // permit sign extension to use full 64-bit range
+		n += p.valSize(uint64(x))
+	}
+	return
+}
+
+// Encode a slice of int32s ([]int32) in packed format.
+func (o *Buffer) enc_slice_packed_int32(p *Properties, base structPointer) error {
+	s := structPointer_Word32Slice(base, p.field)
+	l := s.Len()
+	if l == 0 {
+		return ErrNil
+	}
+	// TODO: Reuse a Buffer.
+	buf := NewBuffer(nil)
+	for i := 0; i < l; i++ {
+		x := int32(s.Index(i)) // permit sign extension to use full 64-bit range
+		p.valEnc(buf, uint64(x))
+	}
+
+	o.buf = append(o.buf, p.tagcode...)
+	o.EncodeVarint(uint64(len(buf.buf)))
+	o.buf = append(o.buf, buf.buf...)
+	return nil
+}
+
+func size_slice_packed_int32(p *Properties, base structPointer) (n int) {
+	s := structPointer_Word32Slice(base, p.field)
+	l := s.Len()
+	if l == 0 {
+		return 0
+	}
+	var bufSize int
+	for i := 0; i < l; i++ {
+		x := int32(s.Index(i)) // permit sign extension to use full 64-bit range
+		bufSize += p.valSize(uint64(x))
+	}
+
+	n += len(p.tagcode)
+	n += sizeVarint(uint64(bufSize))
+	n += bufSize
+	return
+}
+
+// Encode a slice of uint32s ([]uint32).
+// Exactly the same as int32, except for no sign extension.
+func (o *Buffer) enc_slice_uint32(p *Properties, base structPointer) error {
+	s := structPointer_Word32Slice(base, p.field)
+	l := s.Len()
+	if l == 0 {
+		return ErrNil
+	}
+	for i := 0; i < l; i++ {
+		o.buf = append(o.buf, p.tagcode...)
+		x := s.Index(i)
+		p.valEnc(o, uint64(x))
+	}
+	return nil
+}
+
+func size_slice_uint32(p *Properties, base structPointer) (n int) {
+	s := structPointer_Word32Slice(base, p.field)
+	l := s.Len()
+	if l == 0 {
+		return 0
+	}
+	for i := 0; i < l; i++ {
+		n += len(p.tagcode)
+		x := s.Index(i)
+		n += p.valSize(uint64(x))
+	}
+	return
+}
+
+// Encode a slice of uint32s ([]uint32) in packed format.
+// Exactly the same as int32, except for no sign extension.
+func (o *Buffer) enc_slice_packed_uint32(p *Properties, base structPointer) error {
+	s := structPointer_Word32Slice(base, p.field)
+	l := s.Len()
+	if l == 0 {
+		return ErrNil
+	}
+	// TODO: Reuse a Buffer.
+	buf := NewBuffer(nil)
+	for i := 0; i < l; i++ {
+		p.valEnc(buf, uint64(s.Index(i)))
+	}
+
+	o.buf = append(o.buf, p.tagcode...)
+	o.EncodeVarint(uint64(len(buf.buf)))
+	o.buf = append(o.buf, buf.buf...)
+	return nil
+}
+
+func size_slice_packed_uint32(p *Properties, base structPointer) (n int) {
+	s := structPointer_Word32Slice(base, p.field)
+	l := s.Len()
+	if l == 0 {
+		return 0
+	}
+	var bufSize int
+	for i := 0; i < l; i++ {
+		bufSize += p.valSize(uint64(s.Index(i)))
+	}
+
+	n += len(p.tagcode)
+	n += sizeVarint(uint64(bufSize))
+	n += bufSize
+	return
+}
+
+// Encode a slice of int64s ([]int64).
+func (o *Buffer) enc_slice_int64(p *Properties, base structPointer) error {
+	s := structPointer_Word64Slice(base, p.field)
+	l := s.Len()
+	if l == 0 {
+		return ErrNil
+	}
+	for i := 0; i < l; i++ {
+		o.buf = append(o.buf, p.tagcode...)
+		p.valEnc(o, s.Index(i))
+	}
+	return nil
+}
+
+func size_slice_int64(p *Properties, base structPointer) (n int) {
+	s := structPointer_Word64Slice(base, p.field)
+	l := s.Len()
+	if l == 0 {
+		return 0
+	}
+	for i := 0; i < l; i++ {
+		n += len(p.tagcode)
+		n += p.valSize(s.Index(i))
+	}
+	return
+}
+
+// Encode a slice of int64s ([]int64) in packed format.
+func (o *Buffer) enc_slice_packed_int64(p *Properties, base structPointer) error {
+	s := structPointer_Word64Slice(base, p.field)
+	l := s.Len()
+	if l == 0 {
+		return ErrNil
+	}
+	// TODO: Reuse a Buffer.
+	buf := NewBuffer(nil)
+	for i := 0; i < l; i++ {
+		p.valEnc(buf, s.Index(i))
+	}
+
+	o.buf = append(o.buf, p.tagcode...)
+	o.EncodeVarint(uint64(len(buf.buf)))
+	o.buf = append(o.buf, buf.buf...)
+	return nil
+}
+
+func size_slice_packed_int64(p *Properties, base structPointer) (n int) {
+	s := structPointer_Word64Slice(base, p.field)
+	l := s.Len()
+	if l == 0 {
+		return 0
+	}
+	var bufSize int
+	for i := 0; i < l; i++ {
+		bufSize += p.valSize(s.Index(i))
+	}
+
+	n += len(p.tagcode)
+	n += sizeVarint(uint64(bufSize))
+	n += bufSize
+	return
+}
+
+// Encode a slice of slice of bytes ([][]byte).
+func (o *Buffer) enc_slice_slice_byte(p *Properties, base structPointer) error {
+	ss := *structPointer_BytesSlice(base, p.field)
+	l := len(ss)
+	if l == 0 {
+		return ErrNil
+	}
+	for i := 0; i < l; i++ {
+		o.buf = append(o.buf, p.tagcode...)
+		o.EncodeRawBytes(ss[i])
+	}
+	return nil
+}
+
+func size_slice_slice_byte(p *Properties, base structPointer) (n int) {
+	ss := *structPointer_BytesSlice(base, p.field)
+	l := len(ss)
+	if l == 0 {
+		return 0
+	}
+	n += l * len(p.tagcode)
+	for i := 0; i < l; i++ {
+		n += sizeRawBytes(ss[i])
+	}
+	return
+}
+
+// Encode a slice of strings ([]string).
+func (o *Buffer) enc_slice_string(p *Properties, base structPointer) error {
+	ss := *structPointer_StringSlice(base, p.field)
+	l := len(ss)
+	for i := 0; i < l; i++ {
+		o.buf = append(o.buf, p.tagcode...)
+		o.EncodeStringBytes(ss[i])
+	}
+	return nil
+}
+
+func size_slice_string(p *Properties, base structPointer) (n int) {
+	ss := *structPointer_StringSlice(base, p.field)
+	l := len(ss)
+	n += l * len(p.tagcode)
+	for i := 0; i < l; i++ {
+		n += sizeStringBytes(ss[i])
+	}
+	return
+}
+
+// Encode a slice of message structs ([]*struct).
+func (o *Buffer) enc_slice_struct_message(p *Properties, base structPointer) error {
+	var state errorState
+	s := structPointer_StructPointerSlice(base, p.field)
+	l := s.Len()
+
+	for i := 0; i < l; i++ {
+		structp := s.Index(i)
+		if structPointer_IsNil(structp) {
+			return errRepeatedHasNil
+		}
+
+		// Can the object marshal itself?
+		if p.isMarshaler {
+			m := structPointer_Interface(structp, p.stype).(Marshaler)
+			data, err := m.Marshal()
+			if err != nil && !state.shouldContinue(err, nil) {
+				return err
+			}
+			o.buf = append(o.buf, p.tagcode...)
+			o.EncodeRawBytes(data)
+			continue
+		}
+
+		o.buf = append(o.buf, p.tagcode...)
+		err := o.enc_len_struct(p.sprop, structp, &state)
+		if err != nil && !state.shouldContinue(err, nil) {
+			if err == ErrNil {
+				return errRepeatedHasNil
+			}
+			return err
+		}
+	}
+	return state.err
+}
+
+func size_slice_struct_message(p *Properties, base structPointer) (n int) {
+	s := structPointer_StructPointerSlice(base, p.field)
+	l := s.Len()
+	n += l * len(p.tagcode)
+	for i := 0; i < l; i++ {
+		structp := s.Index(i)
+		if structPointer_IsNil(structp) {
+			return // return the size up to this point
+		}
+
+		// Can the object marshal itself?
+		if p.isMarshaler {
+			m := structPointer_Interface(structp, p.stype).(Marshaler)
+			data, _ := m.Marshal()
+			n += sizeRawBytes(data)
+			continue
+		}
+
+		n0 := size_struct(p.sprop, structp)
+		n1 := sizeVarint(uint64(n0)) // size of encoded length
+		n += n0 + n1
+	}
+	return
+}
+
+// Encode a slice of group structs ([]*struct).
+func (o *Buffer) enc_slice_struct_group(p *Properties, base structPointer) error {
+	var state errorState
+	s := structPointer_StructPointerSlice(base, p.field)
+	l := s.Len()
+
+	for i := 0; i < l; i++ {
+		b := s.Index(i)
+		if structPointer_IsNil(b) {
+			return errRepeatedHasNil
+		}
+
+		o.EncodeVarint(uint64((p.Tag << 3) | WireStartGroup))
+
+		err := o.enc_struct(p.sprop, b)
+
+		if err != nil && !state.shouldContinue(err, nil) {
+			if err == ErrNil {
+				return errRepeatedHasNil
+			}
+			return err
+		}
+
+		o.EncodeVarint(uint64((p.Tag << 3) | WireEndGroup))
+	}
+	return state.err
+}
+
+func size_slice_struct_group(p *Properties, base structPointer) (n int) {
+	s := structPointer_StructPointerSlice(base, p.field)
+	l := s.Len()
+
+	n += l * sizeVarint(uint64((p.Tag<<3)|WireStartGroup))
+	n += l * sizeVarint(uint64((p.Tag<<3)|WireEndGroup))
+	for i := 0; i < l; i++ {
+		b := s.Index(i)
+		if structPointer_IsNil(b) {
+			return // return size up to this point
+		}
+
+		n += size_struct(p.sprop, b)
+	}
+	return
+}
+
+// Encode an extension map.
+func (o *Buffer) enc_map(p *Properties, base structPointer) error {
+	exts := structPointer_ExtMap(base, p.field)
+	if err := encodeExtensionsMap(*exts); err != nil {
+		return err
+	}
+
+	return o.enc_map_body(*exts)
+}
+
+func (o *Buffer) enc_exts(p *Properties, base structPointer) error {
+	exts := structPointer_Extensions(base, p.field)
+
+	v, mu := exts.extensionsRead()
+	if v == nil {
+		return nil
+	}
+
+	mu.Lock()
+	defer mu.Unlock()
+	if err := encodeExtensionsMap(v); err != nil {
+		return err
+	}
+
+	return o.enc_map_body(v)
+}
+
+func (o *Buffer) enc_map_body(v map[int32]Extension) error {
+	// Fast-path for common cases: zero or one extensions.
+	if len(v) <= 1 {
+		for _, e := range v {
+			o.buf = append(o.buf, e.enc...)
+		}
+		return nil
+	}
+
+	// Sort keys to provide a deterministic encoding.
+	keys := make([]int, 0, len(v))
+	for k := range v {
+		keys = append(keys, int(k))
+	}
+	sort.Ints(keys)
+
+	for _, k := range keys {
+		o.buf = append(o.buf, v[int32(k)].enc...)
+	}
+	return nil
+}
+
+func size_map(p *Properties, base structPointer) int {
+	v := structPointer_ExtMap(base, p.field)
+	return extensionsMapSize(*v)
+}
+
+func size_exts(p *Properties, base structPointer) int {
+	v := structPointer_Extensions(base, p.field)
+	return extensionsSize(v)
+}
+
+// Encode a map field.
+func (o *Buffer) enc_new_map(p *Properties, base structPointer) error {
+	var state errorState // XXX: or do we need to plumb this through?
+
+	/*
+		A map defined as
+			map<key_type, value_type> map_field = N;
+		is encoded in the same way as
+			message MapFieldEntry {
+				key_type key = 1;
+				value_type value = 2;
+			}
+			repeated MapFieldEntry map_field = N;
+	*/
+
+	v := structPointer_NewAt(base, p.field, p.mtype).Elem() // map[K]V
+	if v.Len() == 0 {
+		return nil
+	}
+
+	keycopy, valcopy, keybase, valbase := mapEncodeScratch(p.mtype)
+
+	enc := func() error {
+		if err := p.mkeyprop.enc(o, p.mkeyprop, keybase); err != nil {
+			return err
+		}
+		if err := p.mvalprop.enc(o, p.mvalprop, valbase); err != nil && err != ErrNil {
+			return err
+		}
+		return nil
+	}
+
+	// Don't sort map keys. It is not required by the spec, and C++ doesn't do it.
+	for _, key := range v.MapKeys() {
+		val := v.MapIndex(key)
+
+		keycopy.Set(key)
+		valcopy.Set(val)
+
+		o.buf = append(o.buf, p.tagcode...)
+		if err := o.enc_len_thing(enc, &state); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func size_new_map(p *Properties, base structPointer) int {
+	v := structPointer_NewAt(base, p.field, p.mtype).Elem() // map[K]V
+
+	keycopy, valcopy, keybase, valbase := mapEncodeScratch(p.mtype)
+
+	n := 0
+	for _, key := range v.MapKeys() {
+		val := v.MapIndex(key)
+		keycopy.Set(key)
+		valcopy.Set(val)
+
+		// Tag codes for key and val are the responsibility of the sub-sizer.
+		keysize := p.mkeyprop.size(p.mkeyprop, keybase)
+		valsize := p.mvalprop.size(p.mvalprop, valbase)
+		entry := keysize + valsize
+		// Add on tag code and length of map entry itself.
+		n += len(p.tagcode) + sizeVarint(uint64(entry)) + entry
+	}
+	return n
+}
+
+// mapEncodeScratch returns a new reflect.Value matching the map's value type,
+// and a structPointer suitable for passing to an encoder or sizer.
+func mapEncodeScratch(mapType reflect.Type) (keycopy, valcopy reflect.Value, keybase, valbase structPointer) {
+	// Prepare addressable doubly-indirect placeholders for the key and value types.
+	// This is needed because the element-type encoders expect **T, but the map iteration produces T.
+
+	keycopy = reflect.New(mapType.Key()).Elem()                 // addressable K
+	keyptr := reflect.New(reflect.PtrTo(keycopy.Type())).Elem() // addressable *K
+	keyptr.Set(keycopy.Addr())                                  //
+	keybase = toStructPointer(keyptr.Addr())                    // **K
+
+	// Value types are more varied and require special handling.
+	switch mapType.Elem().Kind() {
+	case reflect.Slice:
+		// []byte
+		var dummy []byte
+		valcopy = reflect.ValueOf(&dummy).Elem() // addressable []byte
+		valbase = toStructPointer(valcopy.Addr())
+	case reflect.Ptr:
+		// message; the generated field type is map[K]*Msg (so V is *Msg),
+		// so we only need one level of indirection.
+		valcopy = reflect.New(mapType.Elem()).Elem() // addressable V
+		valbase = toStructPointer(valcopy.Addr())
+	default:
+		// everything else
+		valcopy = reflect.New(mapType.Elem()).Elem()                // addressable V
+		valptr := reflect.New(reflect.PtrTo(valcopy.Type())).Elem() // addressable *V
+		valptr.Set(valcopy.Addr())                                  //
+		valbase = toStructPointer(valptr.Addr())                    // **V
+	}
+	return
+}
+
+// Encode a struct.
+func (o *Buffer) enc_struct(prop *StructProperties, base structPointer) error {
+	var state errorState
+	// Encode fields in tag order so that decoders may use optimizations
+	// that depend on the ordering.
+	// https://developers.google.com/protocol-buffers/docs/encoding#order
+	for _, i := range prop.order {
+		p := prop.Prop[i]
+		if p.enc != nil {
+			err := p.enc(o, p, base)
+			if err != nil {
+				if err == ErrNil {
+					if p.Required && state.err == nil {
+						state.err = &RequiredNotSetError{p.Name}
+					}
+				} else if err == errRepeatedHasNil {
+					// Give more context to nil values in repeated fields.
+					return errors.New("repeated field " + p.OrigName + " has nil element")
+				} else if !state.shouldContinue(err, p) {
+					return err
+				}
+			}
+			if len(o.buf) > maxMarshalSize {
+				return ErrTooLarge
+			}
+		}
+	}
+
+	// Do oneof fields.
+	if prop.oneofMarshaler != nil {
+		m := structPointer_Interface(base, prop.stype).(Message)
+		if err := prop.oneofMarshaler(m, o); err == ErrNil {
+			return errOneofHasNil
+		} else if err != nil {
+			return err
+		}
+	}
+
+	// Add unrecognized fields at the end.
+	if prop.unrecField.IsValid() {
+		v := *structPointer_Bytes(base, prop.unrecField)
+		if len(o.buf)+len(v) > maxMarshalSize {
+			return ErrTooLarge
+		}
+		if len(v) > 0 {
+			o.buf = append(o.buf, v...)
+		}
+	}
+
+	return state.err
+}
+
+func size_struct(prop *StructProperties, base structPointer) (n int) {
+	for _, i := range prop.order {
+		p := prop.Prop[i]
+		if p.size != nil {
+			n += p.size(p, base)
+		}
+	}
+
+	// Add unrecognized fields at the end.
+	if prop.unrecField.IsValid() {
+		v := *structPointer_Bytes(base, prop.unrecField)
+		n += len(v)
+	}
+
+	// Factor in any oneof fields.
+	if prop.oneofSizer != nil {
+		m := structPointer_Interface(base, prop.stype).(Message)
+		n += prop.oneofSizer(m)
+	}
+
+	return
+}
+
+var zeroes [20]byte // longer than any conceivable sizeVarint
+
+// Encode a struct, preceded by its encoded length (as a varint).
+func (o *Buffer) enc_len_struct(prop *StructProperties, base structPointer, state *errorState) error {
+	return o.enc_len_thing(func() error { return o.enc_struct(prop, base) }, state)
+}
+
+// Encode something, preceded by its encoded length (as a varint).
+func (o *Buffer) enc_len_thing(enc func() error, state *errorState) error {
+	iLen := len(o.buf)
+	o.buf = append(o.buf, 0, 0, 0, 0) // reserve four bytes for length
+	iMsg := len(o.buf)
+	err := enc()
+	if err != nil && !state.shouldContinue(err, nil) {
+		return err
+	}
+	lMsg := len(o.buf) - iMsg
+	lLen := sizeVarint(uint64(lMsg))
+	switch x := lLen - (iMsg - iLen); {
+	case x > 0: // actual length is x bytes larger than the space we reserved
+		// Move msg x bytes right.
+		o.buf = append(o.buf, zeroes[:x]...)
+		copy(o.buf[iMsg+x:], o.buf[iMsg:iMsg+lMsg])
+	case x < 0: // actual length is x bytes smaller than the space we reserved
+		// Move msg x bytes left.
+		copy(o.buf[iMsg+x:], o.buf[iMsg:iMsg+lMsg])
+		o.buf = o.buf[:len(o.buf)+x] // x is negative
+	}
+	// Encode the length in the reserved space.
+	o.buf = o.buf[:iLen]
+	o.EncodeVarint(uint64(lMsg))
+	o.buf = o.buf[:len(o.buf)+lMsg]
+	return state.err
+}
+
+// errorState maintains the first error that occurs and updates that error
+// with additional context.
+type errorState struct {
+	err error
+}
+
+// shouldContinue reports whether encoding should continue upon encountering the
+// given error. If the error is RequiredNotSetError, shouldContinue returns true
+// and, if this is the first appearance of that error, remembers it for future
+// reporting.
+//
+// If prop is not nil, it may update any error with additional context about the
+// field with the error.
+func (s *errorState) shouldContinue(err error, prop *Properties) bool {
+	// Ignore unset required fields.
+	reqNotSet, ok := err.(*RequiredNotSetError)
+	if !ok {
+		return false
+	}
+	if s.err == nil {
+		if prop != nil {
+			err = &RequiredNotSetError{prop.Name + "." + reqNotSet.field}
+		}
+		s.err = err
+	}
+	return true
+}
diff --git a/vendor/github.com/golang/protobuf/proto/encode_test.go b/vendor/github.com/golang/protobuf/proto/encode_test.go
new file mode 100644
index 000000000..0b36a0e9f
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/encode_test.go
@@ -0,0 +1,83 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto_test
+
+import (
+	"strconv"
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+	tpb "github.com/golang/protobuf/proto/proto3_proto"
+	"github.com/golang/protobuf/ptypes"
+)
+
+var (
+	blackhole []byte
+)
+
+// BenchmarkAny creates increasingly large arbitrary Any messages.  The type is always the
+// same.
+func BenchmarkAny(b *testing.B) {
+	data := make([]byte, 1<<20)
+	quantum := 1 << 10
+	for i := uint(0); i <= 10; i++ {
+		b.Run(strconv.Itoa(quantum<<i), func(b *testing.B) {
+			for k := 0; k < b.N; k++ {
+				inner := &tpb.Message{
+					Data: data[:quantum<<i],
+				}
+				outer, err := ptypes.MarshalAny(inner)
+				if err != nil {
+					b.Error("wrong encode", err)
+				}
+				raw, err := proto.Marshal(&tpb.Message{
+					Anything: outer,
+				})
+				if err != nil {
+					b.Error("wrong encode", err)
+				}
+				blackhole = raw
+			}
+		})
+	}
+}
+
+// BenchmarkEmpy measures the overhead of doing the minimal possible encode.
+func BenchmarkEmpy(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		raw, err := proto.Marshal(&tpb.Message{})
+		if err != nil {
+			b.Error("wrong encode", err)
+		}
+		blackhole = raw
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/equal.go b/vendor/github.com/golang/protobuf/proto/equal.go
new file mode 100644
index 000000000..2ed1cf596
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/equal.go
@@ -0,0 +1,300 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2011 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Protocol buffer comparison.
+
+package proto
+
+import (
+	"bytes"
+	"log"
+	"reflect"
+	"strings"
+)
+
+/*
+Equal returns true iff protocol buffers a and b are equal.
+The arguments must both be pointers to protocol buffer structs.
+
+Equality is defined in this way:
+  - Two messages are equal iff they are the same type,
+    corresponding fields are equal, unknown field sets
+    are equal, and extensions sets are equal.
+  - Two set scalar fields are equal iff their values are equal.
+    If the fields are of a floating-point type, remember that
+    NaN != x for all x, including NaN. If the message is defined
+    in a proto3 .proto file, fields are not "set"; specifically,
+    zero length proto3 "bytes" fields are equal (nil == {}).
+  - Two repeated fields are equal iff their lengths are the same,
+    and their corresponding elements are equal. Note a "bytes" field,
+    although represented by []byte, is not a repeated field and the
+    rule for the scalar fields described above applies.
+  - Two unset fields are equal.
+  - Two unknown field sets are equal if their current
+    encoded state is equal.
+  - Two extension sets are equal iff they have corresponding
+    elements that are pairwise equal.
+  - Two map fields are equal iff their lengths are the same,
+    and they contain the same set of elements. Zero-length map
+    fields are equal.
+  - Every other combination of things are not equal.
+
+The return value is undefined if a and b are not protocol buffers.
+*/
+func Equal(a, b Message) bool {
+	if a == nil || b == nil {
+		return a == b
+	}
+	v1, v2 := reflect.ValueOf(a), reflect.ValueOf(b)
+	if v1.Type() != v2.Type() {
+		return false
+	}
+	if v1.Kind() == reflect.Ptr {
+		if v1.IsNil() {
+			return v2.IsNil()
+		}
+		if v2.IsNil() {
+			return false
+		}
+		v1, v2 = v1.Elem(), v2.Elem()
+	}
+	if v1.Kind() != reflect.Struct {
+		return false
+	}
+	return equalStruct(v1, v2)
+}
+
+// v1 and v2 are known to have the same type.
+func equalStruct(v1, v2 reflect.Value) bool {
+	sprop := GetProperties(v1.Type())
+	for i := 0; i < v1.NumField(); i++ {
+		f := v1.Type().Field(i)
+		if strings.HasPrefix(f.Name, "XXX_") {
+			continue
+		}
+		f1, f2 := v1.Field(i), v2.Field(i)
+		if f.Type.Kind() == reflect.Ptr {
+			if n1, n2 := f1.IsNil(), f2.IsNil(); n1 && n2 {
+				// both unset
+				continue
+			} else if n1 != n2 {
+				// set/unset mismatch
+				return false
+			}
+			b1, ok := f1.Interface().(raw)
+			if ok {
+				b2 := f2.Interface().(raw)
+				// RawMessage
+				if !bytes.Equal(b1.Bytes(), b2.Bytes()) {
+					return false
+				}
+				continue
+			}
+			f1, f2 = f1.Elem(), f2.Elem()
+		}
+		if !equalAny(f1, f2, sprop.Prop[i]) {
+			return false
+		}
+	}
+
+	if em1 := v1.FieldByName("XXX_InternalExtensions"); em1.IsValid() {
+		em2 := v2.FieldByName("XXX_InternalExtensions")
+		if !equalExtensions(v1.Type(), em1.Interface().(XXX_InternalExtensions), em2.Interface().(XXX_InternalExtensions)) {
+			return false
+		}
+	}
+
+	if em1 := v1.FieldByName("XXX_extensions"); em1.IsValid() {
+		em2 := v2.FieldByName("XXX_extensions")
+		if !equalExtMap(v1.Type(), em1.Interface().(map[int32]Extension), em2.Interface().(map[int32]Extension)) {
+			return false
+		}
+	}
+
+	uf := v1.FieldByName("XXX_unrecognized")
+	if !uf.IsValid() {
+		return true
+	}
+
+	u1 := uf.Bytes()
+	u2 := v2.FieldByName("XXX_unrecognized").Bytes()
+	if !bytes.Equal(u1, u2) {
+		return false
+	}
+
+	return true
+}
+
+// v1 and v2 are known to have the same type.
+// prop may be nil.
+func equalAny(v1, v2 reflect.Value, prop *Properties) bool {
+	if v1.Type() == protoMessageType {
+		m1, _ := v1.Interface().(Message)
+		m2, _ := v2.Interface().(Message)
+		return Equal(m1, m2)
+	}
+	switch v1.Kind() {
+	case reflect.Bool:
+		return v1.Bool() == v2.Bool()
+	case reflect.Float32, reflect.Float64:
+		return v1.Float() == v2.Float()
+	case reflect.Int32, reflect.Int64:
+		return v1.Int() == v2.Int()
+	case reflect.Interface:
+		// Probably a oneof field; compare the inner values.
+		n1, n2 := v1.IsNil(), v2.IsNil()
+		if n1 || n2 {
+			return n1 == n2
+		}
+		e1, e2 := v1.Elem(), v2.Elem()
+		if e1.Type() != e2.Type() {
+			return false
+		}
+		return equalAny(e1, e2, nil)
+	case reflect.Map:
+		if v1.Len() != v2.Len() {
+			return false
+		}
+		for _, key := range v1.MapKeys() {
+			val2 := v2.MapIndex(key)
+			if !val2.IsValid() {
+				// This key was not found in the second map.
+				return false
+			}
+			if !equalAny(v1.MapIndex(key), val2, nil) {
+				return false
+			}
+		}
+		return true
+	case reflect.Ptr:
+		// Maps may have nil values in them, so check for nil.
+		if v1.IsNil() && v2.IsNil() {
+			return true
+		}
+		if v1.IsNil() != v2.IsNil() {
+			return false
+		}
+		return equalAny(v1.Elem(), v2.Elem(), prop)
+	case reflect.Slice:
+		if v1.Type().Elem().Kind() == reflect.Uint8 {
+			// short circuit: []byte
+
+			// Edge case: if this is in a proto3 message, a zero length
+			// bytes field is considered the zero value.
+			if prop != nil && prop.proto3 && v1.Len() == 0 && v2.Len() == 0 {
+				return true
+			}
+			if v1.IsNil() != v2.IsNil() {
+				return false
+			}
+			return bytes.Equal(v1.Interface().([]byte), v2.Interface().([]byte))
+		}
+
+		if v1.Len() != v2.Len() {
+			return false
+		}
+		for i := 0; i < v1.Len(); i++ {
+			if !equalAny(v1.Index(i), v2.Index(i), prop) {
+				return false
+			}
+		}
+		return true
+	case reflect.String:
+		return v1.Interface().(string) == v2.Interface().(string)
+	case reflect.Struct:
+		return equalStruct(v1, v2)
+	case reflect.Uint32, reflect.Uint64:
+		return v1.Uint() == v2.Uint()
+	}
+
+	// unknown type, so not a protocol buffer
+	log.Printf("proto: don't know how to compare %v", v1)
+	return false
+}
+
+// base is the struct type that the extensions are based on.
+// x1 and x2 are InternalExtensions.
+func equalExtensions(base reflect.Type, x1, x2 XXX_InternalExtensions) bool {
+	em1, _ := x1.extensionsRead()
+	em2, _ := x2.extensionsRead()
+	return equalExtMap(base, em1, em2)
+}
+
+func equalExtMap(base reflect.Type, em1, em2 map[int32]Extension) bool {
+	if len(em1) != len(em2) {
+		return false
+	}
+
+	for extNum, e1 := range em1 {
+		e2, ok := em2[extNum]
+		if !ok {
+			return false
+		}
+
+		m1, m2 := e1.value, e2.value
+
+		if m1 != nil && m2 != nil {
+			// Both are unencoded.
+			if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
+				return false
+			}
+			continue
+		}
+
+		// At least one is encoded. To do a semantically correct comparison
+		// we need to unmarshal them first.
+		var desc *ExtensionDesc
+		if m := extensionMaps[base]; m != nil {
+			desc = m[extNum]
+		}
+		if desc == nil {
+			log.Printf("proto: don't know how to compare extension %d of %v", extNum, base)
+			continue
+		}
+		var err error
+		if m1 == nil {
+			m1, err = decodeExtension(e1.enc, desc)
+		}
+		if m2 == nil && err == nil {
+			m2, err = decodeExtension(e2.enc, desc)
+		}
+		if err != nil {
+			// The encoded form is invalid.
+			log.Printf("proto: badly encoded extension %d of %v: %v", extNum, base, err)
+			return false
+		}
+		if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
+			return false
+		}
+	}
+
+	return true
+}
diff --git a/vendor/github.com/golang/protobuf/proto/equal_test.go b/vendor/github.com/golang/protobuf/proto/equal_test.go
new file mode 100644
index 000000000..a2febb391
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/equal_test.go
@@ -0,0 +1,224 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2011 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto_test
+
+import (
+	"testing"
+
+	. "github.com/golang/protobuf/proto"
+	proto3pb "github.com/golang/protobuf/proto/proto3_proto"
+	pb "github.com/golang/protobuf/proto/testdata"
+)
+
+// Four identical base messages.
+// The init function adds extensions to some of them.
+var messageWithoutExtension = &pb.MyMessage{Count: Int32(7)}
+var messageWithExtension1a = &pb.MyMessage{Count: Int32(7)}
+var messageWithExtension1b = &pb.MyMessage{Count: Int32(7)}
+var messageWithExtension2 = &pb.MyMessage{Count: Int32(7)}
+
+// Two messages with non-message extensions.
+var messageWithInt32Extension1 = &pb.MyMessage{Count: Int32(8)}
+var messageWithInt32Extension2 = &pb.MyMessage{Count: Int32(8)}
+
+func init() {
+	ext1 := &pb.Ext{Data: String("Kirk")}
+	ext2 := &pb.Ext{Data: String("Picard")}
+
+	// messageWithExtension1a has ext1, but never marshals it.
+	if err := SetExtension(messageWithExtension1a, pb.E_Ext_More, ext1); err != nil {
+		panic("SetExtension on 1a failed: " + err.Error())
+	}
+
+	// messageWithExtension1b is the unmarshaled form of messageWithExtension1a.
+	if err := SetExtension(messageWithExtension1b, pb.E_Ext_More, ext1); err != nil {
+		panic("SetExtension on 1b failed: " + err.Error())
+	}
+	buf, err := Marshal(messageWithExtension1b)
+	if err != nil {
+		panic("Marshal of 1b failed: " + err.Error())
+	}
+	messageWithExtension1b.Reset()
+	if err := Unmarshal(buf, messageWithExtension1b); err != nil {
+		panic("Unmarshal of 1b failed: " + err.Error())
+	}
+
+	// messageWithExtension2 has ext2.
+	if err := SetExtension(messageWithExtension2, pb.E_Ext_More, ext2); err != nil {
+		panic("SetExtension on 2 failed: " + err.Error())
+	}
+
+	if err := SetExtension(messageWithInt32Extension1, pb.E_Ext_Number, Int32(23)); err != nil {
+		panic("SetExtension on Int32-1 failed: " + err.Error())
+	}
+	if err := SetExtension(messageWithInt32Extension1, pb.E_Ext_Number, Int32(24)); err != nil {
+		panic("SetExtension on Int32-2 failed: " + err.Error())
+	}
+}
+
+var EqualTests = []struct {
+	desc string
+	a, b Message
+	exp  bool
+}{
+	{"different types", &pb.GoEnum{}, &pb.GoTestField{}, false},
+	{"equal empty", &pb.GoEnum{}, &pb.GoEnum{}, true},
+	{"nil vs nil", nil, nil, true},
+	{"typed nil vs typed nil", (*pb.GoEnum)(nil), (*pb.GoEnum)(nil), true},
+	{"typed nil vs empty", (*pb.GoEnum)(nil), &pb.GoEnum{}, false},
+	{"different typed nil", (*pb.GoEnum)(nil), (*pb.GoTestField)(nil), false},
+
+	{"one set field, one unset field", &pb.GoTestField{Label: String("foo")}, &pb.GoTestField{}, false},
+	{"one set field zero, one unset field", &pb.GoTest{Param: Int32(0)}, &pb.GoTest{}, false},
+	{"different set fields", &pb.GoTestField{Label: String("foo")}, &pb.GoTestField{Label: String("bar")}, false},
+	{"equal set", &pb.GoTestField{Label: String("foo")}, &pb.GoTestField{Label: String("foo")}, true},
+
+	{"repeated, one set", &pb.GoTest{F_Int32Repeated: []int32{2, 3}}, &pb.GoTest{}, false},
+	{"repeated, different length", &pb.GoTest{F_Int32Repeated: []int32{2, 3}}, &pb.GoTest{F_Int32Repeated: []int32{2}}, false},
+	{"repeated, different value", &pb.GoTest{F_Int32Repeated: []int32{2}}, &pb.GoTest{F_Int32Repeated: []int32{3}}, false},
+	{"repeated, equal", &pb.GoTest{F_Int32Repeated: []int32{2, 4}}, &pb.GoTest{F_Int32Repeated: []int32{2, 4}}, true},
+	{"repeated, nil equal nil", &pb.GoTest{F_Int32Repeated: nil}, &pb.GoTest{F_Int32Repeated: nil}, true},
+	{"repeated, nil equal empty", &pb.GoTest{F_Int32Repeated: nil}, &pb.GoTest{F_Int32Repeated: []int32{}}, true},
+	{"repeated, empty equal nil", &pb.GoTest{F_Int32Repeated: []int32{}}, &pb.GoTest{F_Int32Repeated: nil}, true},
+
+	{
+		"nested, different",
+		&pb.GoTest{RequiredField: &pb.GoTestField{Label: String("foo")}},
+		&pb.GoTest{RequiredField: &pb.GoTestField{Label: String("bar")}},
+		false,
+	},
+	{
+		"nested, equal",
+		&pb.GoTest{RequiredField: &pb.GoTestField{Label: String("wow")}},
+		&pb.GoTest{RequiredField: &pb.GoTestField{Label: String("wow")}},
+		true,
+	},
+
+	{"bytes", &pb.OtherMessage{Value: []byte("foo")}, &pb.OtherMessage{Value: []byte("foo")}, true},
+	{"bytes, empty", &pb.OtherMessage{Value: []byte{}}, &pb.OtherMessage{Value: []byte{}}, true},
+	{"bytes, empty vs nil", &pb.OtherMessage{Value: []byte{}}, &pb.OtherMessage{Value: nil}, false},
+	{
+		"repeated bytes",
+		&pb.MyMessage{RepBytes: [][]byte{[]byte("sham"), []byte("wow")}},
+		&pb.MyMessage{RepBytes: [][]byte{[]byte("sham"), []byte("wow")}},
+		true,
+	},
+	// In proto3, []byte{} and []byte(nil) are equal.
+	{"proto3 bytes, empty vs nil", &proto3pb.Message{Data: []byte{}}, &proto3pb.Message{Data: nil}, true},
+
+	{"extension vs. no extension", messageWithoutExtension, messageWithExtension1a, false},
+	{"extension vs. same extension", messageWithExtension1a, messageWithExtension1b, true},
+	{"extension vs. different extension", messageWithExtension1a, messageWithExtension2, false},
+
+	{"int32 extension vs. itself", messageWithInt32Extension1, messageWithInt32Extension1, true},
+	{"int32 extension vs. a different int32", messageWithInt32Extension1, messageWithInt32Extension2, false},
+
+	{
+		"message with group",
+		&pb.MyMessage{
+			Count: Int32(1),
+			Somegroup: &pb.MyMessage_SomeGroup{
+				GroupField: Int32(5),
+			},
+		},
+		&pb.MyMessage{
+			Count: Int32(1),
+			Somegroup: &pb.MyMessage_SomeGroup{
+				GroupField: Int32(5),
+			},
+		},
+		true,
+	},
+
+	{
+		"map same",
+		&pb.MessageWithMap{NameMapping: map[int32]string{1: "Ken"}},
+		&pb.MessageWithMap{NameMapping: map[int32]string{1: "Ken"}},
+		true,
+	},
+	{
+		"map different entry",
+		&pb.MessageWithMap{NameMapping: map[int32]string{1: "Ken"}},
+		&pb.MessageWithMap{NameMapping: map[int32]string{2: "Rob"}},
+		false,
+	},
+	{
+		"map different key only",
+		&pb.MessageWithMap{NameMapping: map[int32]string{1: "Ken"}},
+		&pb.MessageWithMap{NameMapping: map[int32]string{2: "Ken"}},
+		false,
+	},
+	{
+		"map different value only",
+		&pb.MessageWithMap{NameMapping: map[int32]string{1: "Ken"}},
+		&pb.MessageWithMap{NameMapping: map[int32]string{1: "Rob"}},
+		false,
+	},
+	{
+		"zero-length maps same",
+		&pb.MessageWithMap{NameMapping: map[int32]string{}},
+		&pb.MessageWithMap{NameMapping: nil},
+		true,
+	},
+	{
+		"orders in map don't matter",
+		&pb.MessageWithMap{NameMapping: map[int32]string{1: "Ken", 2: "Rob"}},
+		&pb.MessageWithMap{NameMapping: map[int32]string{2: "Rob", 1: "Ken"}},
+		true,
+	},
+	{
+		"oneof same",
+		&pb.Communique{Union: &pb.Communique_Number{41}},
+		&pb.Communique{Union: &pb.Communique_Number{41}},
+		true,
+	},
+	{
+		"oneof one nil",
+		&pb.Communique{Union: &pb.Communique_Number{41}},
+		&pb.Communique{},
+		false,
+	},
+	{
+		"oneof different",
+		&pb.Communique{Union: &pb.Communique_Number{41}},
+		&pb.Communique{Union: &pb.Communique_Name{"Bobby Tables"}},
+		false,
+	},
+}
+
+func TestEqual(t *testing.T) {
+	for _, tc := range EqualTests {
+		if res := Equal(tc.a, tc.b); res != tc.exp {
+			t.Errorf("%v: Equal(%v, %v) = %v, want %v", tc.desc, tc.a, tc.b, res, tc.exp)
+		}
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/extensions.go b/vendor/github.com/golang/protobuf/proto/extensions.go
new file mode 100644
index 000000000..eaad21831
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/extensions.go
@@ -0,0 +1,587 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto
+
+/*
+ * Types and routines for supporting protocol buffer extensions.
+ */
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"strconv"
+	"sync"
+)
+
+// ErrMissingExtension is the error returned by GetExtension if the named extension is not in the message.
+var ErrMissingExtension = errors.New("proto: missing extension")
+
+// ExtensionRange represents a range of message extensions for a protocol buffer.
+// Used in code generated by the protocol compiler.
+type ExtensionRange struct {
+	Start, End int32 // both inclusive
+}
+
+// extendableProto is an interface implemented by any protocol buffer generated by the current
+// proto compiler that may be extended.
+type extendableProto interface {
+	Message
+	ExtensionRangeArray() []ExtensionRange
+	extensionsWrite() map[int32]Extension
+	extensionsRead() (map[int32]Extension, sync.Locker)
+}
+
+// extendableProtoV1 is an interface implemented by a protocol buffer generated by the previous
+// version of the proto compiler that may be extended.
+type extendableProtoV1 interface {
+	Message
+	ExtensionRangeArray() []ExtensionRange
+	ExtensionMap() map[int32]Extension
+}
+
+// extensionAdapter is a wrapper around extendableProtoV1 that implements extendableProto.
+type extensionAdapter struct {
+	extendableProtoV1
+}
+
+func (e extensionAdapter) extensionsWrite() map[int32]Extension {
+	return e.ExtensionMap()
+}
+
+func (e extensionAdapter) extensionsRead() (map[int32]Extension, sync.Locker) {
+	return e.ExtensionMap(), notLocker{}
+}
+
+// notLocker is a sync.Locker whose Lock and Unlock methods are nops.
+type notLocker struct{}
+
+func (n notLocker) Lock()   {}
+func (n notLocker) Unlock() {}
+
+// extendable returns the extendableProto interface for the given generated proto message.
+// If the proto message has the old extension format, it returns a wrapper that implements
+// the extendableProto interface.
+func extendable(p interface{}) (extendableProto, bool) {
+	if ep, ok := p.(extendableProto); ok {
+		return ep, ok
+	}
+	if ep, ok := p.(extendableProtoV1); ok {
+		return extensionAdapter{ep}, ok
+	}
+	return nil, false
+}
+
+// XXX_InternalExtensions is an internal representation of proto extensions.
+//
+// Each generated message struct type embeds an anonymous XXX_InternalExtensions field,
+// thus gaining the unexported 'extensions' method, which can be called only from the proto package.
+//
+// The methods of XXX_InternalExtensions are not concurrency safe in general,
+// but calls to logically read-only methods such as has and get may be executed concurrently.
+type XXX_InternalExtensions struct {
+	// The struct must be indirect so that if a user inadvertently copies a
+	// generated message and its embedded XXX_InternalExtensions, they
+	// avoid the mayhem of a copied mutex.
+	//
+	// The mutex serializes all logically read-only operations to p.extensionMap.
+	// It is up to the client to ensure that write operations to p.extensionMap are
+	// mutually exclusive with other accesses.
+	p *struct {
+		mu           sync.Mutex
+		extensionMap map[int32]Extension
+	}
+}
+
+// extensionsWrite returns the extension map, creating it on first use.
+func (e *XXX_InternalExtensions) extensionsWrite() map[int32]Extension {
+	if e.p == nil {
+		e.p = new(struct {
+			mu           sync.Mutex
+			extensionMap map[int32]Extension
+		})
+		e.p.extensionMap = make(map[int32]Extension)
+	}
+	return e.p.extensionMap
+}
+
+// extensionsRead returns the extensions map for read-only use.  It may be nil.
+// The caller must hold the returned mutex's lock when accessing Elements within the map.
+func (e *XXX_InternalExtensions) extensionsRead() (map[int32]Extension, sync.Locker) {
+	if e.p == nil {
+		return nil, nil
+	}
+	return e.p.extensionMap, &e.p.mu
+}
+
+var extendableProtoType = reflect.TypeOf((*extendableProto)(nil)).Elem()
+var extendableProtoV1Type = reflect.TypeOf((*extendableProtoV1)(nil)).Elem()
+
+// ExtensionDesc represents an extension specification.
+// Used in generated code from the protocol compiler.
+type ExtensionDesc struct {
+	ExtendedType  Message     // nil pointer to the type that is being extended
+	ExtensionType interface{} // nil pointer to the extension type
+	Field         int32       // field number
+	Name          string      // fully-qualified name of extension, for text formatting
+	Tag           string      // protobuf tag style
+	Filename      string      // name of the file in which the extension is defined
+}
+
+func (ed *ExtensionDesc) repeated() bool {
+	t := reflect.TypeOf(ed.ExtensionType)
+	return t.Kind() == reflect.Slice && t.Elem().Kind() != reflect.Uint8
+}
+
+// Extension represents an extension in a message.
+type Extension struct {
+	// When an extension is stored in a message using SetExtension
+	// only desc and value are set. When the message is marshaled
+	// enc will be set to the encoded form of the message.
+	//
+	// When a message is unmarshaled and contains extensions, each
+	// extension will have only enc set. When such an extension is
+	// accessed using GetExtension (or GetExtensions) desc and value
+	// will be set.
+	desc  *ExtensionDesc
+	value interface{}
+	enc   []byte
+}
+
+// SetRawExtension is for testing only.
+func SetRawExtension(base Message, id int32, b []byte) {
+	epb, ok := extendable(base)
+	if !ok {
+		return
+	}
+	extmap := epb.extensionsWrite()
+	extmap[id] = Extension{enc: b}
+}
+
+// isExtensionField returns true iff the given field number is in an extension range.
+func isExtensionField(pb extendableProto, field int32) bool {
+	for _, er := range pb.ExtensionRangeArray() {
+		if er.Start <= field && field <= er.End {
+			return true
+		}
+	}
+	return false
+}
+
+// checkExtensionTypes checks that the given extension is valid for pb.
+func checkExtensionTypes(pb extendableProto, extension *ExtensionDesc) error {
+	var pbi interface{} = pb
+	// Check the extended type.
+	if ea, ok := pbi.(extensionAdapter); ok {
+		pbi = ea.extendableProtoV1
+	}
+	if a, b := reflect.TypeOf(pbi), reflect.TypeOf(extension.ExtendedType); a != b {
+		return errors.New("proto: bad extended type; " + b.String() + " does not extend " + a.String())
+	}
+	// Check the range.
+	if !isExtensionField(pb, extension.Field) {
+		return errors.New("proto: bad extension number; not in declared ranges")
+	}
+	return nil
+}
+
+// extPropKey is sufficient to uniquely identify an extension.
+type extPropKey struct {
+	base  reflect.Type
+	field int32
+}
+
+var extProp = struct {
+	sync.RWMutex
+	m map[extPropKey]*Properties
+}{
+	m: make(map[extPropKey]*Properties),
+}
+
+func extensionProperties(ed *ExtensionDesc) *Properties {
+	key := extPropKey{base: reflect.TypeOf(ed.ExtendedType), field: ed.Field}
+
+	extProp.RLock()
+	if prop, ok := extProp.m[key]; ok {
+		extProp.RUnlock()
+		return prop
+	}
+	extProp.RUnlock()
+
+	extProp.Lock()
+	defer extProp.Unlock()
+	// Check again.
+	if prop, ok := extProp.m[key]; ok {
+		return prop
+	}
+
+	prop := new(Properties)
+	prop.Init(reflect.TypeOf(ed.ExtensionType), "unknown_name", ed.Tag, nil)
+	extProp.m[key] = prop
+	return prop
+}
+
+// encode encodes any unmarshaled (unencoded) extensions in e.
+func encodeExtensions(e *XXX_InternalExtensions) error {
+	m, mu := e.extensionsRead()
+	if m == nil {
+		return nil // fast path
+	}
+	mu.Lock()
+	defer mu.Unlock()
+	return encodeExtensionsMap(m)
+}
+
+// encode encodes any unmarshaled (unencoded) extensions in e.
+func encodeExtensionsMap(m map[int32]Extension) error {
+	for k, e := range m {
+		if e.value == nil || e.desc == nil {
+			// Extension is only in its encoded form.
+			continue
+		}
+
+		// We don't skip extensions that have an encoded form set,
+		// because the extension value may have been mutated after
+		// the last time this function was called.
+
+		et := reflect.TypeOf(e.desc.ExtensionType)
+		props := extensionProperties(e.desc)
+
+		p := NewBuffer(nil)
+		// If e.value has type T, the encoder expects a *struct{ X T }.
+		// Pass a *T with a zero field and hope it all works out.
+		x := reflect.New(et)
+		x.Elem().Set(reflect.ValueOf(e.value))
+		if err := props.enc(p, props, toStructPointer(x)); err != nil {
+			return err
+		}
+		e.enc = p.buf
+		m[k] = e
+	}
+	return nil
+}
+
+func extensionsSize(e *XXX_InternalExtensions) (n int) {
+	m, mu := e.extensionsRead()
+	if m == nil {
+		return 0
+	}
+	mu.Lock()
+	defer mu.Unlock()
+	return extensionsMapSize(m)
+}
+
+func extensionsMapSize(m map[int32]Extension) (n int) {
+	for _, e := range m {
+		if e.value == nil || e.desc == nil {
+			// Extension is only in its encoded form.
+			n += len(e.enc)
+			continue
+		}
+
+		// We don't skip extensions that have an encoded form set,
+		// because the extension value may have been mutated after
+		// the last time this function was called.
+
+		et := reflect.TypeOf(e.desc.ExtensionType)
+		props := extensionProperties(e.desc)
+
+		// If e.value has type T, the encoder expects a *struct{ X T }.
+		// Pass a *T with a zero field and hope it all works out.
+		x := reflect.New(et)
+		x.Elem().Set(reflect.ValueOf(e.value))
+		n += props.size(props, toStructPointer(x))
+	}
+	return
+}
+
+// HasExtension returns whether the given extension is present in pb.
+func HasExtension(pb Message, extension *ExtensionDesc) bool {
+	// TODO: Check types, field numbers, etc.?
+	epb, ok := extendable(pb)
+	if !ok {
+		return false
+	}
+	extmap, mu := epb.extensionsRead()
+	if extmap == nil {
+		return false
+	}
+	mu.Lock()
+	_, ok = extmap[extension.Field]
+	mu.Unlock()
+	return ok
+}
+
+// ClearExtension removes the given extension from pb.
+func ClearExtension(pb Message, extension *ExtensionDesc) {
+	epb, ok := extendable(pb)
+	if !ok {
+		return
+	}
+	// TODO: Check types, field numbers, etc.?
+	extmap := epb.extensionsWrite()
+	delete(extmap, extension.Field)
+}
+
+// GetExtension parses and returns the given extension of pb.
+// If the extension is not present and has no default value it returns ErrMissingExtension.
+func GetExtension(pb Message, extension *ExtensionDesc) (interface{}, error) {
+	epb, ok := extendable(pb)
+	if !ok {
+		return nil, errors.New("proto: not an extendable proto")
+	}
+
+	if err := checkExtensionTypes(epb, extension); err != nil {
+		return nil, err
+	}
+
+	emap, mu := epb.extensionsRead()
+	if emap == nil {
+		return defaultExtensionValue(extension)
+	}
+	mu.Lock()
+	defer mu.Unlock()
+	e, ok := emap[extension.Field]
+	if !ok {
+		// defaultExtensionValue returns the default value or
+		// ErrMissingExtension if there is no default.
+		return defaultExtensionValue(extension)
+	}
+
+	if e.value != nil {
+		// Already decoded. Check the descriptor, though.
+		if e.desc != extension {
+			// This shouldn't happen. If it does, it means that
+			// GetExtension was called twice with two different
+			// descriptors with the same field number.
+			return nil, errors.New("proto: descriptor conflict")
+		}
+		return e.value, nil
+	}
+
+	v, err := decodeExtension(e.enc, extension)
+	if err != nil {
+		return nil, err
+	}
+
+	// Remember the decoded version and drop the encoded version.
+	// That way it is safe to mutate what we return.
+	e.value = v
+	e.desc = extension
+	e.enc = nil
+	emap[extension.Field] = e
+	return e.value, nil
+}
+
+// defaultExtensionValue returns the default value for extension.
+// If no default for an extension is defined ErrMissingExtension is returned.
+func defaultExtensionValue(extension *ExtensionDesc) (interface{}, error) {
+	t := reflect.TypeOf(extension.ExtensionType)
+	props := extensionProperties(extension)
+
+	sf, _, err := fieldDefault(t, props)
+	if err != nil {
+		return nil, err
+	}
+
+	if sf == nil || sf.value == nil {
+		// There is no default value.
+		return nil, ErrMissingExtension
+	}
+
+	if t.Kind() != reflect.Ptr {
+		// We do not need to return a Ptr, we can directly return sf.value.
+		return sf.value, nil
+	}
+
+	// We need to return an interface{} that is a pointer to sf.value.
+	value := reflect.New(t).Elem()
+	value.Set(reflect.New(value.Type().Elem()))
+	if sf.kind == reflect.Int32 {
+		// We may have an int32 or an enum, but the underlying data is int32.
+		// Since we can't set an int32 into a non int32 reflect.value directly
+		// set it as a int32.
+		value.Elem().SetInt(int64(sf.value.(int32)))
+	} else {
+		value.Elem().Set(reflect.ValueOf(sf.value))
+	}
+	return value.Interface(), nil
+}
+
+// decodeExtension decodes an extension encoded in b.
+func decodeExtension(b []byte, extension *ExtensionDesc) (interface{}, error) {
+	o := NewBuffer(b)
+
+	t := reflect.TypeOf(extension.ExtensionType)
+
+	props := extensionProperties(extension)
+
+	// t is a pointer to a struct, pointer to basic type or a slice.
+	// Allocate a "field" to store the pointer/slice itself; the
+	// pointer/slice will be stored here. We pass
+	// the address of this field to props.dec.
+	// This passes a zero field and a *t and lets props.dec
+	// interpret it as a *struct{ x t }.
+	value := reflect.New(t).Elem()
+
+	for {
+		// Discard wire type and field number varint. It isn't needed.
+		if _, err := o.DecodeVarint(); err != nil {
+			return nil, err
+		}
+
+		if err := props.dec(o, props, toStructPointer(value.Addr())); err != nil {
+			return nil, err
+		}
+
+		if o.index >= len(o.buf) {
+			break
+		}
+	}
+	return value.Interface(), nil
+}
+
+// GetExtensions returns a slice of the extensions present in pb that are also listed in es.
+// The returned slice has the same length as es; missing extensions will appear as nil elements.
+func GetExtensions(pb Message, es []*ExtensionDesc) (extensions []interface{}, err error) {
+	epb, ok := extendable(pb)
+	if !ok {
+		return nil, errors.New("proto: not an extendable proto")
+	}
+	extensions = make([]interface{}, len(es))
+	for i, e := range es {
+		extensions[i], err = GetExtension(epb, e)
+		if err == ErrMissingExtension {
+			err = nil
+		}
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+
+// ExtensionDescs returns a new slice containing pb's extension descriptors, in undefined order.
+// For non-registered extensions, ExtensionDescs returns an incomplete descriptor containing
+// just the Field field, which defines the extension's field number.
+func ExtensionDescs(pb Message) ([]*ExtensionDesc, error) {
+	epb, ok := extendable(pb)
+	if !ok {
+		return nil, fmt.Errorf("proto: %T is not an extendable proto.Message", pb)
+	}
+	registeredExtensions := RegisteredExtensions(pb)
+
+	emap, mu := epb.extensionsRead()
+	if emap == nil {
+		return nil, nil
+	}
+	mu.Lock()
+	defer mu.Unlock()
+	extensions := make([]*ExtensionDesc, 0, len(emap))
+	for extid, e := range emap {
+		desc := e.desc
+		if desc == nil {
+			desc = registeredExtensions[extid]
+			if desc == nil {
+				desc = &ExtensionDesc{Field: extid}
+			}
+		}
+
+		extensions = append(extensions, desc)
+	}
+	return extensions, nil
+}
+
+// SetExtension sets the specified extension of pb to the specified value.
+func SetExtension(pb Message, extension *ExtensionDesc, value interface{}) error {
+	epb, ok := extendable(pb)
+	if !ok {
+		return errors.New("proto: not an extendable proto")
+	}
+	if err := checkExtensionTypes(epb, extension); err != nil {
+		return err
+	}
+	typ := reflect.TypeOf(extension.ExtensionType)
+	if typ != reflect.TypeOf(value) {
+		return errors.New("proto: bad extension value type")
+	}
+	// nil extension values need to be caught early, because the
+	// encoder can't distinguish an ErrNil due to a nil extension
+	// from an ErrNil due to a missing field. Extensions are
+	// always optional, so the encoder would just swallow the error
+	// and drop all the extensions from the encoded message.
+	if reflect.ValueOf(value).IsNil() {
+		return fmt.Errorf("proto: SetExtension called with nil value of type %T", value)
+	}
+
+	extmap := epb.extensionsWrite()
+	extmap[extension.Field] = Extension{desc: extension, value: value}
+	return nil
+}
+
+// ClearAllExtensions clears all extensions from pb.
+func ClearAllExtensions(pb Message) {
+	epb, ok := extendable(pb)
+	if !ok {
+		return
+	}
+	m := epb.extensionsWrite()
+	for k := range m {
+		delete(m, k)
+	}
+}
+
+// A global registry of extensions.
+// The generated code will register the generated descriptors by calling RegisterExtension.
+
+var extensionMaps = make(map[reflect.Type]map[int32]*ExtensionDesc)
+
+// RegisterExtension is called from the generated code.
+func RegisterExtension(desc *ExtensionDesc) {
+	st := reflect.TypeOf(desc.ExtendedType).Elem()
+	m := extensionMaps[st]
+	if m == nil {
+		m = make(map[int32]*ExtensionDesc)
+		extensionMaps[st] = m
+	}
+	if _, ok := m[desc.Field]; ok {
+		panic("proto: duplicate extension registered: " + st.String() + " " + strconv.Itoa(int(desc.Field)))
+	}
+	m[desc.Field] = desc
+}
+
+// RegisteredExtensions returns a map of the registered extensions of a
+// protocol buffer struct, indexed by the extension number.
+// The argument pb should be a nil pointer to the struct type.
+func RegisteredExtensions(pb Message) map[int32]*ExtensionDesc {
+	return extensionMaps[reflect.TypeOf(pb).Elem()]
+}
diff --git a/vendor/github.com/golang/protobuf/proto/extensions_test.go b/vendor/github.com/golang/protobuf/proto/extensions_test.go
new file mode 100644
index 000000000..b6d9114c5
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/extensions_test.go
@@ -0,0 +1,536 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2014 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto_test
+
+import (
+	"bytes"
+	"fmt"
+	"reflect"
+	"sort"
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+	pb "github.com/golang/protobuf/proto/testdata"
+	"golang.org/x/sync/errgroup"
+)
+
+func TestGetExtensionsWithMissingExtensions(t *testing.T) {
+	msg := &pb.MyMessage{}
+	ext1 := &pb.Ext{}
+	if err := proto.SetExtension(msg, pb.E_Ext_More, ext1); err != nil {
+		t.Fatalf("Could not set ext1: %s", err)
+	}
+	exts, err := proto.GetExtensions(msg, []*proto.ExtensionDesc{
+		pb.E_Ext_More,
+		pb.E_Ext_Text,
+	})
+	if err != nil {
+		t.Fatalf("GetExtensions() failed: %s", err)
+	}
+	if exts[0] != ext1 {
+		t.Errorf("ext1 not in returned extensions: %T %v", exts[0], exts[0])
+	}
+	if exts[1] != nil {
+		t.Errorf("ext2 in returned extensions: %T %v", exts[1], exts[1])
+	}
+}
+
+func TestExtensionDescsWithMissingExtensions(t *testing.T) {
+	msg := &pb.MyMessage{Count: proto.Int32(0)}
+	extdesc1 := pb.E_Ext_More
+	if descs, err := proto.ExtensionDescs(msg); len(descs) != 0 || err != nil {
+		t.Errorf("proto.ExtensionDescs: got %d descs, error %v; want 0, nil", len(descs), err)
+	}
+
+	ext1 := &pb.Ext{}
+	if err := proto.SetExtension(msg, extdesc1, ext1); err != nil {
+		t.Fatalf("Could not set ext1: %s", err)
+	}
+	extdesc2 := &proto.ExtensionDesc{
+		ExtendedType:  (*pb.MyMessage)(nil),
+		ExtensionType: (*bool)(nil),
+		Field:         123456789,
+		Name:          "a.b",
+		Tag:           "varint,123456789,opt",
+	}
+	ext2 := proto.Bool(false)
+	if err := proto.SetExtension(msg, extdesc2, ext2); err != nil {
+		t.Fatalf("Could not set ext2: %s", err)
+	}
+
+	b, err := proto.Marshal(msg)
+	if err != nil {
+		t.Fatalf("Could not marshal msg: %v", err)
+	}
+	if err := proto.Unmarshal(b, msg); err != nil {
+		t.Fatalf("Could not unmarshal into msg: %v", err)
+	}
+
+	descs, err := proto.ExtensionDescs(msg)
+	if err != nil {
+		t.Fatalf("proto.ExtensionDescs: got error %v", err)
+	}
+	sortExtDescs(descs)
+	wantDescs := []*proto.ExtensionDesc{extdesc1, &proto.ExtensionDesc{Field: extdesc2.Field}}
+	if !reflect.DeepEqual(descs, wantDescs) {
+		t.Errorf("proto.ExtensionDescs(msg) sorted extension ids: got %+v, want %+v", descs, wantDescs)
+	}
+}
+
+type ExtensionDescSlice []*proto.ExtensionDesc
+
+func (s ExtensionDescSlice) Len() int           { return len(s) }
+func (s ExtensionDescSlice) Less(i, j int) bool { return s[i].Field < s[j].Field }
+func (s ExtensionDescSlice) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
+
+func sortExtDescs(s []*proto.ExtensionDesc) {
+	sort.Sort(ExtensionDescSlice(s))
+}
+
+func TestGetExtensionStability(t *testing.T) {
+	check := func(m *pb.MyMessage) bool {
+		ext1, err := proto.GetExtension(m, pb.E_Ext_More)
+		if err != nil {
+			t.Fatalf("GetExtension() failed: %s", err)
+		}
+		ext2, err := proto.GetExtension(m, pb.E_Ext_More)
+		if err != nil {
+			t.Fatalf("GetExtension() failed: %s", err)
+		}
+		return ext1 == ext2
+	}
+	msg := &pb.MyMessage{Count: proto.Int32(4)}
+	ext0 := &pb.Ext{}
+	if err := proto.SetExtension(msg, pb.E_Ext_More, ext0); err != nil {
+		t.Fatalf("Could not set ext1: %s", ext0)
+	}
+	if !check(msg) {
+		t.Errorf("GetExtension() not stable before marshaling")
+	}
+	bb, err := proto.Marshal(msg)
+	if err != nil {
+		t.Fatalf("Marshal() failed: %s", err)
+	}
+	msg1 := &pb.MyMessage{}
+	err = proto.Unmarshal(bb, msg1)
+	if err != nil {
+		t.Fatalf("Unmarshal() failed: %s", err)
+	}
+	if !check(msg1) {
+		t.Errorf("GetExtension() not stable after unmarshaling")
+	}
+}
+
+func TestGetExtensionDefaults(t *testing.T) {
+	var setFloat64 float64 = 1
+	var setFloat32 float32 = 2
+	var setInt32 int32 = 3
+	var setInt64 int64 = 4
+	var setUint32 uint32 = 5
+	var setUint64 uint64 = 6
+	var setBool = true
+	var setBool2 = false
+	var setString = "Goodnight string"
+	var setBytes = []byte("Goodnight bytes")
+	var setEnum = pb.DefaultsMessage_TWO
+
+	type testcase struct {
+		ext  *proto.ExtensionDesc // Extension we are testing.
+		want interface{}          // Expected value of extension, or nil (meaning that GetExtension will fail).
+		def  interface{}          // Expected value of extension after ClearExtension().
+	}
+	tests := []testcase{
+		{pb.E_NoDefaultDouble, setFloat64, nil},
+		{pb.E_NoDefaultFloat, setFloat32, nil},
+		{pb.E_NoDefaultInt32, setInt32, nil},
+		{pb.E_NoDefaultInt64, setInt64, nil},
+		{pb.E_NoDefaultUint32, setUint32, nil},
+		{pb.E_NoDefaultUint64, setUint64, nil},
+		{pb.E_NoDefaultSint32, setInt32, nil},
+		{pb.E_NoDefaultSint64, setInt64, nil},
+		{pb.E_NoDefaultFixed32, setUint32, nil},
+		{pb.E_NoDefaultFixed64, setUint64, nil},
+		{pb.E_NoDefaultSfixed32, setInt32, nil},
+		{pb.E_NoDefaultSfixed64, setInt64, nil},
+		{pb.E_NoDefaultBool, setBool, nil},
+		{pb.E_NoDefaultBool, setBool2, nil},
+		{pb.E_NoDefaultString, setString, nil},
+		{pb.E_NoDefaultBytes, setBytes, nil},
+		{pb.E_NoDefaultEnum, setEnum, nil},
+		{pb.E_DefaultDouble, setFloat64, float64(3.1415)},
+		{pb.E_DefaultFloat, setFloat32, float32(3.14)},
+		{pb.E_DefaultInt32, setInt32, int32(42)},
+		{pb.E_DefaultInt64, setInt64, int64(43)},
+		{pb.E_DefaultUint32, setUint32, uint32(44)},
+		{pb.E_DefaultUint64, setUint64, uint64(45)},
+		{pb.E_DefaultSint32, setInt32, int32(46)},
+		{pb.E_DefaultSint64, setInt64, int64(47)},
+		{pb.E_DefaultFixed32, setUint32, uint32(48)},
+		{pb.E_DefaultFixed64, setUint64, uint64(49)},
+		{pb.E_DefaultSfixed32, setInt32, int32(50)},
+		{pb.E_DefaultSfixed64, setInt64, int64(51)},
+		{pb.E_DefaultBool, setBool, true},
+		{pb.E_DefaultBool, setBool2, true},
+		{pb.E_DefaultString, setString, "Hello, string"},
+		{pb.E_DefaultBytes, setBytes, []byte("Hello, bytes")},
+		{pb.E_DefaultEnum, setEnum, pb.DefaultsMessage_ONE},
+	}
+
+	checkVal := func(test testcase, msg *pb.DefaultsMessage, valWant interface{}) error {
+		val, err := proto.GetExtension(msg, test.ext)
+		if err != nil {
+			if valWant != nil {
+				return fmt.Errorf("GetExtension(): %s", err)
+			}
+			if want := proto.ErrMissingExtension; err != want {
+				return fmt.Errorf("Unexpected error: got %v, want %v", err, want)
+			}
+			return nil
+		}
+
+		// All proto2 extension values are either a pointer to a value or a slice of values.
+		ty := reflect.TypeOf(val)
+		tyWant := reflect.TypeOf(test.ext.ExtensionType)
+		if got, want := ty, tyWant; got != want {
+			return fmt.Errorf("unexpected reflect.TypeOf(): got %v want %v", got, want)
+		}
+		tye := ty.Elem()
+		tyeWant := tyWant.Elem()
+		if got, want := tye, tyeWant; got != want {
+			return fmt.Errorf("unexpected reflect.TypeOf().Elem(): got %v want %v", got, want)
+		}
+
+		// Check the name of the type of the value.
+		// If it is an enum it will be type int32 with the name of the enum.
+		if got, want := tye.Name(), tye.Name(); got != want {
+			return fmt.Errorf("unexpected reflect.TypeOf().Elem().Name(): got %v want %v", got, want)
+		}
+
+		// Check that value is what we expect.
+		// If we have a pointer in val, get the value it points to.
+		valExp := val
+		if ty.Kind() == reflect.Ptr {
+			valExp = reflect.ValueOf(val).Elem().Interface()
+		}
+		if got, want := valExp, valWant; !reflect.DeepEqual(got, want) {
+			return fmt.Errorf("unexpected reflect.DeepEqual(): got %v want %v", got, want)
+		}
+
+		return nil
+	}
+
+	setTo := func(test testcase) interface{} {
+		setTo := reflect.ValueOf(test.want)
+		if typ := reflect.TypeOf(test.ext.ExtensionType); typ.Kind() == reflect.Ptr {
+			setTo = reflect.New(typ).Elem()
+			setTo.Set(reflect.New(setTo.Type().Elem()))
+			setTo.Elem().Set(reflect.ValueOf(test.want))
+		}
+		return setTo.Interface()
+	}
+
+	for _, test := range tests {
+		msg := &pb.DefaultsMessage{}
+		name := test.ext.Name
+
+		// Check the initial value.
+		if err := checkVal(test, msg, test.def); err != nil {
+			t.Errorf("%s: %v", name, err)
+		}
+
+		// Set the per-type value and check value.
+		name = fmt.Sprintf("%s (set to %T %v)", name, test.want, test.want)
+		if err := proto.SetExtension(msg, test.ext, setTo(test)); err != nil {
+			t.Errorf("%s: SetExtension(): %v", name, err)
+			continue
+		}
+		if err := checkVal(test, msg, test.want); err != nil {
+			t.Errorf("%s: %v", name, err)
+			continue
+		}
+
+		// Set and check the value.
+		name += " (cleared)"
+		proto.ClearExtension(msg, test.ext)
+		if err := checkVal(test, msg, test.def); err != nil {
+			t.Errorf("%s: %v", name, err)
+		}
+	}
+}
+
+func TestExtensionsRoundTrip(t *testing.T) {
+	msg := &pb.MyMessage{}
+	ext1 := &pb.Ext{
+		Data: proto.String("hi"),
+	}
+	ext2 := &pb.Ext{
+		Data: proto.String("there"),
+	}
+	exists := proto.HasExtension(msg, pb.E_Ext_More)
+	if exists {
+		t.Error("Extension More present unexpectedly")
+	}
+	if err := proto.SetExtension(msg, pb.E_Ext_More, ext1); err != nil {
+		t.Error(err)
+	}
+	if err := proto.SetExtension(msg, pb.E_Ext_More, ext2); err != nil {
+		t.Error(err)
+	}
+	e, err := proto.GetExtension(msg, pb.E_Ext_More)
+	if err != nil {
+		t.Error(err)
+	}
+	x, ok := e.(*pb.Ext)
+	if !ok {
+		t.Errorf("e has type %T, expected testdata.Ext", e)
+	} else if *x.Data != "there" {
+		t.Errorf("SetExtension failed to overwrite, got %+v, not 'there'", x)
+	}
+	proto.ClearExtension(msg, pb.E_Ext_More)
+	if _, err = proto.GetExtension(msg, pb.E_Ext_More); err != proto.ErrMissingExtension {
+		t.Errorf("got %v, expected ErrMissingExtension", e)
+	}
+	if _, err := proto.GetExtension(msg, pb.E_X215); err == nil {
+		t.Error("expected bad extension error, got nil")
+	}
+	if err := proto.SetExtension(msg, pb.E_X215, 12); err == nil {
+		t.Error("expected extension err")
+	}
+	if err := proto.SetExtension(msg, pb.E_Ext_More, 12); err == nil {
+		t.Error("expected some sort of type mismatch error, got nil")
+	}
+}
+
+func TestNilExtension(t *testing.T) {
+	msg := &pb.MyMessage{
+		Count: proto.Int32(1),
+	}
+	if err := proto.SetExtension(msg, pb.E_Ext_Text, proto.String("hello")); err != nil {
+		t.Fatal(err)
+	}
+	if err := proto.SetExtension(msg, pb.E_Ext_More, (*pb.Ext)(nil)); err == nil {
+		t.Error("expected SetExtension to fail due to a nil extension")
+	} else if want := "proto: SetExtension called with nil value of type *testdata.Ext"; err.Error() != want {
+		t.Errorf("expected error %v, got %v", want, err)
+	}
+	// Note: if the behavior of Marshal is ever changed to ignore nil extensions, update
+	// this test to verify that E_Ext_Text is properly propagated through marshal->unmarshal.
+}
+
+func TestMarshalUnmarshalRepeatedExtension(t *testing.T) {
+	// Add a repeated extension to the result.
+	tests := []struct {
+		name string
+		ext  []*pb.ComplexExtension
+	}{
+		{
+			"two fields",
+			[]*pb.ComplexExtension{
+				{First: proto.Int32(7)},
+				{Second: proto.Int32(11)},
+			},
+		},
+		{
+			"repeated field",
+			[]*pb.ComplexExtension{
+				{Third: []int32{1000}},
+				{Third: []int32{2000}},
+			},
+		},
+		{
+			"two fields and repeated field",
+			[]*pb.ComplexExtension{
+				{Third: []int32{1000}},
+				{First: proto.Int32(9)},
+				{Second: proto.Int32(21)},
+				{Third: []int32{2000}},
+			},
+		},
+	}
+	for _, test := range tests {
+		// Marshal message with a repeated extension.
+		msg1 := new(pb.OtherMessage)
+		err := proto.SetExtension(msg1, pb.E_RComplex, test.ext)
+		if err != nil {
+			t.Fatalf("[%s] Error setting extension: %v", test.name, err)
+		}
+		b, err := proto.Marshal(msg1)
+		if err != nil {
+			t.Fatalf("[%s] Error marshaling message: %v", test.name, err)
+		}
+
+		// Unmarshal and read the merged proto.
+		msg2 := new(pb.OtherMessage)
+		err = proto.Unmarshal(b, msg2)
+		if err != nil {
+			t.Fatalf("[%s] Error unmarshaling message: %v", test.name, err)
+		}
+		e, err := proto.GetExtension(msg2, pb.E_RComplex)
+		if err != nil {
+			t.Fatalf("[%s] Error getting extension: %v", test.name, err)
+		}
+		ext := e.([]*pb.ComplexExtension)
+		if ext == nil {
+			t.Fatalf("[%s] Invalid extension", test.name)
+		}
+		if !reflect.DeepEqual(ext, test.ext) {
+			t.Errorf("[%s] Wrong value for ComplexExtension: got: %v want: %v\n", test.name, ext, test.ext)
+		}
+	}
+}
+
+func TestUnmarshalRepeatingNonRepeatedExtension(t *testing.T) {
+	// We may see multiple instances of the same extension in the wire
+	// format. For example, the proto compiler may encode custom options in
+	// this way. Here, we verify that we merge the extensions together.
+	tests := []struct {
+		name string
+		ext  []*pb.ComplexExtension
+	}{
+		{
+			"two fields",
+			[]*pb.ComplexExtension{
+				{First: proto.Int32(7)},
+				{Second: proto.Int32(11)},
+			},
+		},
+		{
+			"repeated field",
+			[]*pb.ComplexExtension{
+				{Third: []int32{1000}},
+				{Third: []int32{2000}},
+			},
+		},
+		{
+			"two fields and repeated field",
+			[]*pb.ComplexExtension{
+				{Third: []int32{1000}},
+				{First: proto.Int32(9)},
+				{Second: proto.Int32(21)},
+				{Third: []int32{2000}},
+			},
+		},
+	}
+	for _, test := range tests {
+		var buf bytes.Buffer
+		var want pb.ComplexExtension
+
+		// Generate a serialized representation of a repeated extension
+		// by catenating bytes together.
+		for i, e := range test.ext {
+			// Merge to create the wanted proto.
+			proto.Merge(&want, e)
+
+			// serialize the message
+			msg := new(pb.OtherMessage)
+			err := proto.SetExtension(msg, pb.E_Complex, e)
+			if err != nil {
+				t.Fatalf("[%s] Error setting extension %d: %v", test.name, i, err)
+			}
+			b, err := proto.Marshal(msg)
+			if err != nil {
+				t.Fatalf("[%s] Error marshaling message %d: %v", test.name, i, err)
+			}
+			buf.Write(b)
+		}
+
+		// Unmarshal and read the merged proto.
+		msg2 := new(pb.OtherMessage)
+		err := proto.Unmarshal(buf.Bytes(), msg2)
+		if err != nil {
+			t.Fatalf("[%s] Error unmarshaling message: %v", test.name, err)
+		}
+		e, err := proto.GetExtension(msg2, pb.E_Complex)
+		if err != nil {
+			t.Fatalf("[%s] Error getting extension: %v", test.name, err)
+		}
+		ext := e.(*pb.ComplexExtension)
+		if ext == nil {
+			t.Fatalf("[%s] Invalid extension", test.name)
+		}
+		if !reflect.DeepEqual(*ext, want) {
+			t.Errorf("[%s] Wrong value for ComplexExtension: got: %s want: %s\n", test.name, ext, want)
+		}
+	}
+}
+
+func TestClearAllExtensions(t *testing.T) {
+	// unregistered extension
+	desc := &proto.ExtensionDesc{
+		ExtendedType:  (*pb.MyMessage)(nil),
+		ExtensionType: (*bool)(nil),
+		Field:         101010100,
+		Name:          "emptyextension",
+		Tag:           "varint,0,opt",
+	}
+	m := &pb.MyMessage{}
+	if proto.HasExtension(m, desc) {
+		t.Errorf("proto.HasExtension(%s): got true, want false", proto.MarshalTextString(m))
+	}
+	if err := proto.SetExtension(m, desc, proto.Bool(true)); err != nil {
+		t.Errorf("proto.SetExtension(m, desc, true): got error %q, want nil", err)
+	}
+	if !proto.HasExtension(m, desc) {
+		t.Errorf("proto.HasExtension(%s): got false, want true", proto.MarshalTextString(m))
+	}
+	proto.ClearAllExtensions(m)
+	if proto.HasExtension(m, desc) {
+		t.Errorf("proto.HasExtension(%s): got true, want false", proto.MarshalTextString(m))
+	}
+}
+
+func TestMarshalRace(t *testing.T) {
+	// unregistered extension
+	desc := &proto.ExtensionDesc{
+		ExtendedType:  (*pb.MyMessage)(nil),
+		ExtensionType: (*bool)(nil),
+		Field:         101010100,
+		Name:          "emptyextension",
+		Tag:           "varint,0,opt",
+	}
+
+	m := &pb.MyMessage{Count: proto.Int32(4)}
+	if err := proto.SetExtension(m, desc, proto.Bool(true)); err != nil {
+		t.Errorf("proto.SetExtension(m, desc, true): got error %q, want nil", err)
+	}
+
+	var g errgroup.Group
+	for n := 3; n > 0; n-- {
+		g.Go(func() error {
+			_, err := proto.Marshal(m)
+			return err
+		})
+	}
+	if err := g.Wait(); err != nil {
+		t.Fatal(err)
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/lib.go b/vendor/github.com/golang/protobuf/proto/lib.go
new file mode 100644
index 000000000..ac4ddbc07
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/lib.go
@@ -0,0 +1,898 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/*
+Package proto converts data structures to and from the wire format of
+protocol buffers.  It works in concert with the Go source code generated
+for .proto files by the protocol compiler.
+
+A summary of the properties of the protocol buffer interface
+for a protocol buffer variable v:
+
+  - Names are turned from camel_case to CamelCase for export.
+  - There are no methods on v to set fields; just treat
+	them as structure fields.
+  - There are getters that return a field's value if set,
+	and return the field's default value if unset.
+	The getters work even if the receiver is a nil message.
+  - The zero value for a struct is its correct initialization state.
+	All desired fields must be set before marshaling.
+  - A Reset() method will restore a protobuf struct to its zero state.
+  - Non-repeated fields are pointers to the values; nil means unset.
+	That is, optional or required field int32 f becomes F *int32.
+  - Repeated fields are slices.
+  - Helper functions are available to aid the setting of fields.
+	msg.Foo = proto.String("hello") // set field
+  - Constants are defined to hold the default values of all fields that
+	have them.  They have the form Default_StructName_FieldName.
+	Because the getter methods handle defaulted values,
+	direct use of these constants should be rare.
+  - Enums are given type names and maps from names to values.
+	Enum values are prefixed by the enclosing message's name, or by the
+	enum's type name if it is a top-level enum. Enum types have a String
+	method, and a Enum method to assist in message construction.
+  - Nested messages, groups and enums have type names prefixed with the name of
+	the surrounding message type.
+  - Extensions are given descriptor names that start with E_,
+	followed by an underscore-delimited list of the nested messages
+	that contain it (if any) followed by the CamelCased name of the
+	extension field itself.  HasExtension, ClearExtension, GetExtension
+	and SetExtension are functions for manipulating extensions.
+  - Oneof field sets are given a single field in their message,
+	with distinguished wrapper types for each possible field value.
+  - Marshal and Unmarshal are functions to encode and decode the wire format.
+
+When the .proto file specifies `syntax="proto3"`, there are some differences:
+
+  - Non-repeated fields of non-message type are values instead of pointers.
+  - Getters are only generated for message and oneof fields.
+  - Enum types do not get an Enum method.
+
+The simplest way to describe this is to see an example.
+Given file test.proto, containing
+
+	package example;
+
+	enum FOO { X = 17; }
+
+	message Test {
+	  required string label = 1;
+	  optional int32 type = 2 [default=77];
+	  repeated int64 reps = 3;
+	  optional group OptionalGroup = 4 {
+	    required string RequiredField = 5;
+	  }
+	  oneof union {
+	    int32 number = 6;
+	    string name = 7;
+	  }
+	}
+
+The resulting file, test.pb.go, is:
+
+	package example
+
+	import proto "github.com/golang/protobuf/proto"
+	import math "math"
+
+	type FOO int32
+	const (
+		FOO_X FOO = 17
+	)
+	var FOO_name = map[int32]string{
+		17: "X",
+	}
+	var FOO_value = map[string]int32{
+		"X": 17,
+	}
+
+	func (x FOO) Enum() *FOO {
+		p := new(FOO)
+		*p = x
+		return p
+	}
+	func (x FOO) String() string {
+		return proto.EnumName(FOO_name, int32(x))
+	}
+	func (x *FOO) UnmarshalJSON(data []byte) error {
+		value, err := proto.UnmarshalJSONEnum(FOO_value, data)
+		if err != nil {
+			return err
+		}
+		*x = FOO(value)
+		return nil
+	}
+
+	type Test struct {
+		Label         *string             `protobuf:"bytes,1,req,name=label" json:"label,omitempty"`
+		Type          *int32              `protobuf:"varint,2,opt,name=type,def=77" json:"type,omitempty"`
+		Reps          []int64             `protobuf:"varint,3,rep,name=reps" json:"reps,omitempty"`
+		Optionalgroup *Test_OptionalGroup `protobuf:"group,4,opt,name=OptionalGroup" json:"optionalgroup,omitempty"`
+		// Types that are valid to be assigned to Union:
+		//	*Test_Number
+		//	*Test_Name
+		Union            isTest_Union `protobuf_oneof:"union"`
+		XXX_unrecognized []byte       `json:"-"`
+	}
+	func (m *Test) Reset()         { *m = Test{} }
+	func (m *Test) String() string { return proto.CompactTextString(m) }
+	func (*Test) ProtoMessage() {}
+
+	type isTest_Union interface {
+		isTest_Union()
+	}
+
+	type Test_Number struct {
+		Number int32 `protobuf:"varint,6,opt,name=number"`
+	}
+	type Test_Name struct {
+		Name string `protobuf:"bytes,7,opt,name=name"`
+	}
+
+	func (*Test_Number) isTest_Union() {}
+	func (*Test_Name) isTest_Union()   {}
+
+	func (m *Test) GetUnion() isTest_Union {
+		if m != nil {
+			return m.Union
+		}
+		return nil
+	}
+	const Default_Test_Type int32 = 77
+
+	func (m *Test) GetLabel() string {
+		if m != nil && m.Label != nil {
+			return *m.Label
+		}
+		return ""
+	}
+
+	func (m *Test) GetType() int32 {
+		if m != nil && m.Type != nil {
+			return *m.Type
+		}
+		return Default_Test_Type
+	}
+
+	func (m *Test) GetOptionalgroup() *Test_OptionalGroup {
+		if m != nil {
+			return m.Optionalgroup
+		}
+		return nil
+	}
+
+	type Test_OptionalGroup struct {
+		RequiredField *string `protobuf:"bytes,5,req" json:"RequiredField,omitempty"`
+	}
+	func (m *Test_OptionalGroup) Reset()         { *m = Test_OptionalGroup{} }
+	func (m *Test_OptionalGroup) String() string { return proto.CompactTextString(m) }
+
+	func (m *Test_OptionalGroup) GetRequiredField() string {
+		if m != nil && m.RequiredField != nil {
+			return *m.RequiredField
+		}
+		return ""
+	}
+
+	func (m *Test) GetNumber() int32 {
+		if x, ok := m.GetUnion().(*Test_Number); ok {
+			return x.Number
+		}
+		return 0
+	}
+
+	func (m *Test) GetName() string {
+		if x, ok := m.GetUnion().(*Test_Name); ok {
+			return x.Name
+		}
+		return ""
+	}
+
+	func init() {
+		proto.RegisterEnum("example.FOO", FOO_name, FOO_value)
+	}
+
+To create and play with a Test object:
+
+	package main
+
+	import (
+		"log"
+
+		"github.com/golang/protobuf/proto"
+		pb "./example.pb"
+	)
+
+	func main() {
+		test := &pb.Test{
+			Label: proto.String("hello"),
+			Type:  proto.Int32(17),
+			Reps:  []int64{1, 2, 3},
+			Optionalgroup: &pb.Test_OptionalGroup{
+				RequiredField: proto.String("good bye"),
+			},
+			Union: &pb.Test_Name{"fred"},
+		}
+		data, err := proto.Marshal(test)
+		if err != nil {
+			log.Fatal("marshaling error: ", err)
+		}
+		newTest := &pb.Test{}
+		err = proto.Unmarshal(data, newTest)
+		if err != nil {
+			log.Fatal("unmarshaling error: ", err)
+		}
+		// Now test and newTest contain the same data.
+		if test.GetLabel() != newTest.GetLabel() {
+			log.Fatalf("data mismatch %q != %q", test.GetLabel(), newTest.GetLabel())
+		}
+		// Use a type switch to determine which oneof was set.
+		switch u := test.Union.(type) {
+		case *pb.Test_Number: // u.Number contains the number.
+		case *pb.Test_Name: // u.Name contains the string.
+		}
+		// etc.
+	}
+*/
+package proto
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"reflect"
+	"sort"
+	"strconv"
+	"sync"
+)
+
+// Message is implemented by generated protocol buffer messages.
+type Message interface {
+	Reset()
+	String() string
+	ProtoMessage()
+}
+
+// Stats records allocation details about the protocol buffer encoders
+// and decoders.  Useful for tuning the library itself.
+type Stats struct {
+	Emalloc uint64 // mallocs in encode
+	Dmalloc uint64 // mallocs in decode
+	Encode  uint64 // number of encodes
+	Decode  uint64 // number of decodes
+	Chit    uint64 // number of cache hits
+	Cmiss   uint64 // number of cache misses
+	Size    uint64 // number of sizes
+}
+
+// Set to true to enable stats collection.
+const collectStats = false
+
+var stats Stats
+
+// GetStats returns a copy of the global Stats structure.
+func GetStats() Stats { return stats }
+
+// A Buffer is a buffer manager for marshaling and unmarshaling
+// protocol buffers.  It may be reused between invocations to
+// reduce memory usage.  It is not necessary to use a Buffer;
+// the global functions Marshal and Unmarshal create a
+// temporary Buffer and are fine for most applications.
+type Buffer struct {
+	buf   []byte // encode/decode byte stream
+	index int    // read point
+
+	// pools of basic types to amortize allocation.
+	bools   []bool
+	uint32s []uint32
+	uint64s []uint64
+
+	// extra pools, only used with pointer_reflect.go
+	int32s   []int32
+	int64s   []int64
+	float32s []float32
+	float64s []float64
+}
+
+// NewBuffer allocates a new Buffer and initializes its internal data to
+// the contents of the argument slice.
+func NewBuffer(e []byte) *Buffer {
+	return &Buffer{buf: e}
+}
+
+// Reset resets the Buffer, ready for marshaling a new protocol buffer.
+func (p *Buffer) Reset() {
+	p.buf = p.buf[0:0] // for reading/writing
+	p.index = 0        // for reading
+}
+
+// SetBuf replaces the internal buffer with the slice,
+// ready for unmarshaling the contents of the slice.
+func (p *Buffer) SetBuf(s []byte) {
+	p.buf = s
+	p.index = 0
+}
+
+// Bytes returns the contents of the Buffer.
+func (p *Buffer) Bytes() []byte { return p.buf }
+
+/*
+ * Helper routines for simplifying the creation of optional fields of basic type.
+ */
+
+// Bool is a helper routine that allocates a new bool value
+// to store v and returns a pointer to it.
+func Bool(v bool) *bool {
+	return &v
+}
+
+// Int32 is a helper routine that allocates a new int32 value
+// to store v and returns a pointer to it.
+func Int32(v int32) *int32 {
+	return &v
+}
+
+// Int is a helper routine that allocates a new int32 value
+// to store v and returns a pointer to it, but unlike Int32
+// its argument value is an int.
+func Int(v int) *int32 {
+	p := new(int32)
+	*p = int32(v)
+	return p
+}
+
+// Int64 is a helper routine that allocates a new int64 value
+// to store v and returns a pointer to it.
+func Int64(v int64) *int64 {
+	return &v
+}
+
+// Float32 is a helper routine that allocates a new float32 value
+// to store v and returns a pointer to it.
+func Float32(v float32) *float32 {
+	return &v
+}
+
+// Float64 is a helper routine that allocates a new float64 value
+// to store v and returns a pointer to it.
+func Float64(v float64) *float64 {
+	return &v
+}
+
+// Uint32 is a helper routine that allocates a new uint32 value
+// to store v and returns a pointer to it.
+func Uint32(v uint32) *uint32 {
+	return &v
+}
+
+// Uint64 is a helper routine that allocates a new uint64 value
+// to store v and returns a pointer to it.
+func Uint64(v uint64) *uint64 {
+	return &v
+}
+
+// String is a helper routine that allocates a new string value
+// to store v and returns a pointer to it.
+func String(v string) *string {
+	return &v
+}
+
+// EnumName is a helper function to simplify printing protocol buffer enums
+// by name.  Given an enum map and a value, it returns a useful string.
+func EnumName(m map[int32]string, v int32) string {
+	s, ok := m[v]
+	if ok {
+		return s
+	}
+	return strconv.Itoa(int(v))
+}
+
+// UnmarshalJSONEnum is a helper function to simplify recovering enum int values
+// from their JSON-encoded representation. Given a map from the enum's symbolic
+// names to its int values, and a byte buffer containing the JSON-encoded
+// value, it returns an int32 that can be cast to the enum type by the caller.
+//
+// The function can deal with both JSON representations, numeric and symbolic.
+func UnmarshalJSONEnum(m map[string]int32, data []byte, enumName string) (int32, error) {
+	if data[0] == '"' {
+		// New style: enums are strings.
+		var repr string
+		if err := json.Unmarshal(data, &repr); err != nil {
+			return -1, err
+		}
+		val, ok := m[repr]
+		if !ok {
+			return 0, fmt.Errorf("unrecognized enum %s value %q", enumName, repr)
+		}
+		return val, nil
+	}
+	// Old style: enums are ints.
+	var val int32
+	if err := json.Unmarshal(data, &val); err != nil {
+		return 0, fmt.Errorf("cannot unmarshal %#q into enum %s", data, enumName)
+	}
+	return val, nil
+}
+
+// DebugPrint dumps the encoded data in b in a debugging format with a header
+// including the string s. Used in testing but made available for general debugging.
+func (p *Buffer) DebugPrint(s string, b []byte) {
+	var u uint64
+
+	obuf := p.buf
+	index := p.index
+	p.buf = b
+	p.index = 0
+	depth := 0
+
+	fmt.Printf("\n--- %s ---\n", s)
+
+out:
+	for {
+		for i := 0; i < depth; i++ {
+			fmt.Print("  ")
+		}
+
+		index := p.index
+		if index == len(p.buf) {
+			break
+		}
+
+		op, err := p.DecodeVarint()
+		if err != nil {
+			fmt.Printf("%3d: fetching op err %v\n", index, err)
+			break out
+		}
+		tag := op >> 3
+		wire := op & 7
+
+		switch wire {
+		default:
+			fmt.Printf("%3d: t=%3d unknown wire=%d\n",
+				index, tag, wire)
+			break out
+
+		case WireBytes:
+			var r []byte
+
+			r, err = p.DecodeRawBytes(false)
+			if err != nil {
+				break out
+			}
+			fmt.Printf("%3d: t=%3d bytes [%d]", index, tag, len(r))
+			if len(r) <= 6 {
+				for i := 0; i < len(r); i++ {
+					fmt.Printf(" %.2x", r[i])
+				}
+			} else {
+				for i := 0; i < 3; i++ {
+					fmt.Printf(" %.2x", r[i])
+				}
+				fmt.Printf(" ..")
+				for i := len(r) - 3; i < len(r); i++ {
+					fmt.Printf(" %.2x", r[i])
+				}
+			}
+			fmt.Printf("\n")
+
+		case WireFixed32:
+			u, err = p.DecodeFixed32()
+			if err != nil {
+				fmt.Printf("%3d: t=%3d fix32 err %v\n", index, tag, err)
+				break out
+			}
+			fmt.Printf("%3d: t=%3d fix32 %d\n", index, tag, u)
+
+		case WireFixed64:
+			u, err = p.DecodeFixed64()
+			if err != nil {
+				fmt.Printf("%3d: t=%3d fix64 err %v\n", index, tag, err)
+				break out
+			}
+			fmt.Printf("%3d: t=%3d fix64 %d\n", index, tag, u)
+
+		case WireVarint:
+			u, err = p.DecodeVarint()
+			if err != nil {
+				fmt.Printf("%3d: t=%3d varint err %v\n", index, tag, err)
+				break out
+			}
+			fmt.Printf("%3d: t=%3d varint %d\n", index, tag, u)
+
+		case WireStartGroup:
+			fmt.Printf("%3d: t=%3d start\n", index, tag)
+			depth++
+
+		case WireEndGroup:
+			depth--
+			fmt.Printf("%3d: t=%3d end\n", index, tag)
+		}
+	}
+
+	if depth != 0 {
+		fmt.Printf("%3d: start-end not balanced %d\n", p.index, depth)
+	}
+	fmt.Printf("\n")
+
+	p.buf = obuf
+	p.index = index
+}
+
+// SetDefaults sets unset protocol buffer fields to their default values.
+// It only modifies fields that are both unset and have defined defaults.
+// It recursively sets default values in any non-nil sub-messages.
+func SetDefaults(pb Message) {
+	setDefaults(reflect.ValueOf(pb), true, false)
+}
+
+// v is a pointer to a struct.
+func setDefaults(v reflect.Value, recur, zeros bool) {
+	v = v.Elem()
+
+	defaultMu.RLock()
+	dm, ok := defaults[v.Type()]
+	defaultMu.RUnlock()
+	if !ok {
+		dm = buildDefaultMessage(v.Type())
+		defaultMu.Lock()
+		defaults[v.Type()] = dm
+		defaultMu.Unlock()
+	}
+
+	for _, sf := range dm.scalars {
+		f := v.Field(sf.index)
+		if !f.IsNil() {
+			// field already set
+			continue
+		}
+		dv := sf.value
+		if dv == nil && !zeros {
+			// no explicit default, and don't want to set zeros
+			continue
+		}
+		fptr := f.Addr().Interface() // **T
+		// TODO: Consider batching the allocations we do here.
+		switch sf.kind {
+		case reflect.Bool:
+			b := new(bool)
+			if dv != nil {
+				*b = dv.(bool)
+			}
+			*(fptr.(**bool)) = b
+		case reflect.Float32:
+			f := new(float32)
+			if dv != nil {
+				*f = dv.(float32)
+			}
+			*(fptr.(**float32)) = f
+		case reflect.Float64:
+			f := new(float64)
+			if dv != nil {
+				*f = dv.(float64)
+			}
+			*(fptr.(**float64)) = f
+		case reflect.Int32:
+			// might be an enum
+			if ft := f.Type(); ft != int32PtrType {
+				// enum
+				f.Set(reflect.New(ft.Elem()))
+				if dv != nil {
+					f.Elem().SetInt(int64(dv.(int32)))
+				}
+			} else {
+				// int32 field
+				i := new(int32)
+				if dv != nil {
+					*i = dv.(int32)
+				}
+				*(fptr.(**int32)) = i
+			}
+		case reflect.Int64:
+			i := new(int64)
+			if dv != nil {
+				*i = dv.(int64)
+			}
+			*(fptr.(**int64)) = i
+		case reflect.String:
+			s := new(string)
+			if dv != nil {
+				*s = dv.(string)
+			}
+			*(fptr.(**string)) = s
+		case reflect.Uint8:
+			// exceptional case: []byte
+			var b []byte
+			if dv != nil {
+				db := dv.([]byte)
+				b = make([]byte, len(db))
+				copy(b, db)
+			} else {
+				b = []byte{}
+			}
+			*(fptr.(*[]byte)) = b
+		case reflect.Uint32:
+			u := new(uint32)
+			if dv != nil {
+				*u = dv.(uint32)
+			}
+			*(fptr.(**uint32)) = u
+		case reflect.Uint64:
+			u := new(uint64)
+			if dv != nil {
+				*u = dv.(uint64)
+			}
+			*(fptr.(**uint64)) = u
+		default:
+			log.Printf("proto: can't set default for field %v (sf.kind=%v)", f, sf.kind)
+		}
+	}
+
+	for _, ni := range dm.nested {
+		f := v.Field(ni)
+		// f is *T or []*T or map[T]*T
+		switch f.Kind() {
+		case reflect.Ptr:
+			if f.IsNil() {
+				continue
+			}
+			setDefaults(f, recur, zeros)
+
+		case reflect.Slice:
+			for i := 0; i < f.Len(); i++ {
+				e := f.Index(i)
+				if e.IsNil() {
+					continue
+				}
+				setDefaults(e, recur, zeros)
+			}
+
+		case reflect.Map:
+			for _, k := range f.MapKeys() {
+				e := f.MapIndex(k)
+				if e.IsNil() {
+					continue
+				}
+				setDefaults(e, recur, zeros)
+			}
+		}
+	}
+}
+
+var (
+	// defaults maps a protocol buffer struct type to a slice of the fields,
+	// with its scalar fields set to their proto-declared non-zero default values.
+	defaultMu sync.RWMutex
+	defaults  = make(map[reflect.Type]defaultMessage)
+
+	int32PtrType = reflect.TypeOf((*int32)(nil))
+)
+
+// defaultMessage represents information about the default values of a message.
+type defaultMessage struct {
+	scalars []scalarField
+	nested  []int // struct field index of nested messages
+}
+
+type scalarField struct {
+	index int          // struct field index
+	kind  reflect.Kind // element type (the T in *T or []T)
+	value interface{}  // the proto-declared default value, or nil
+}
+
+// t is a struct type.
+func buildDefaultMessage(t reflect.Type) (dm defaultMessage) {
+	sprop := GetProperties(t)
+	for _, prop := range sprop.Prop {
+		fi, ok := sprop.decoderTags.get(prop.Tag)
+		if !ok {
+			// XXX_unrecognized
+			continue
+		}
+		ft := t.Field(fi).Type
+
+		sf, nested, err := fieldDefault(ft, prop)
+		switch {
+		case err != nil:
+			log.Print(err)
+		case nested:
+			dm.nested = append(dm.nested, fi)
+		case sf != nil:
+			sf.index = fi
+			dm.scalars = append(dm.scalars, *sf)
+		}
+	}
+
+	return dm
+}
+
+// fieldDefault returns the scalarField for field type ft.
+// sf will be nil if the field can not have a default.
+// nestedMessage will be true if this is a nested message.
+// Note that sf.index is not set on return.
+func fieldDefault(ft reflect.Type, prop *Properties) (sf *scalarField, nestedMessage bool, err error) {
+	var canHaveDefault bool
+	switch ft.Kind() {
+	case reflect.Ptr:
+		if ft.Elem().Kind() == reflect.Struct {
+			nestedMessage = true
+		} else {
+			canHaveDefault = true // proto2 scalar field
+		}
+
+	case reflect.Slice:
+		switch ft.Elem().Kind() {
+		case reflect.Ptr:
+			nestedMessage = true // repeated message
+		case reflect.Uint8:
+			canHaveDefault = true // bytes field
+		}
+
+	case reflect.Map:
+		if ft.Elem().Kind() == reflect.Ptr {
+			nestedMessage = true // map with message values
+		}
+	}
+
+	if !canHaveDefault {
+		if nestedMessage {
+			return nil, true, nil
+		}
+		return nil, false, nil
+	}
+
+	// We now know that ft is a pointer or slice.
+	sf = &scalarField{kind: ft.Elem().Kind()}
+
+	// scalar fields without defaults
+	if !prop.HasDefault {
+		return sf, false, nil
+	}
+
+	// a scalar field: either *T or []byte
+	switch ft.Elem().Kind() {
+	case reflect.Bool:
+		x, err := strconv.ParseBool(prop.Default)
+		if err != nil {
+			return nil, false, fmt.Errorf("proto: bad default bool %q: %v", prop.Default, err)
+		}
+		sf.value = x
+	case reflect.Float32:
+		x, err := strconv.ParseFloat(prop.Default, 32)
+		if err != nil {
+			return nil, false, fmt.Errorf("proto: bad default float32 %q: %v", prop.Default, err)
+		}
+		sf.value = float32(x)
+	case reflect.Float64:
+		x, err := strconv.ParseFloat(prop.Default, 64)
+		if err != nil {
+			return nil, false, fmt.Errorf("proto: bad default float64 %q: %v", prop.Default, err)
+		}
+		sf.value = x
+	case reflect.Int32:
+		x, err := strconv.ParseInt(prop.Default, 10, 32)
+		if err != nil {
+			return nil, false, fmt.Errorf("proto: bad default int32 %q: %v", prop.Default, err)
+		}
+		sf.value = int32(x)
+	case reflect.Int64:
+		x, err := strconv.ParseInt(prop.Default, 10, 64)
+		if err != nil {
+			return nil, false, fmt.Errorf("proto: bad default int64 %q: %v", prop.Default, err)
+		}
+		sf.value = x
+	case reflect.String:
+		sf.value = prop.Default
+	case reflect.Uint8:
+		// []byte (not *uint8)
+		sf.value = []byte(prop.Default)
+	case reflect.Uint32:
+		x, err := strconv.ParseUint(prop.Default, 10, 32)
+		if err != nil {
+			return nil, false, fmt.Errorf("proto: bad default uint32 %q: %v", prop.Default, err)
+		}
+		sf.value = uint32(x)
+	case reflect.Uint64:
+		x, err := strconv.ParseUint(prop.Default, 10, 64)
+		if err != nil {
+			return nil, false, fmt.Errorf("proto: bad default uint64 %q: %v", prop.Default, err)
+		}
+		sf.value = x
+	default:
+		return nil, false, fmt.Errorf("proto: unhandled def kind %v", ft.Elem().Kind())
+	}
+
+	return sf, false, nil
+}
+
+// Map fields may have key types of non-float scalars, strings and enums.
+// The easiest way to sort them in some deterministic order is to use fmt.
+// If this turns out to be inefficient we can always consider other options,
+// such as doing a Schwartzian transform.
+
+func mapKeys(vs []reflect.Value) sort.Interface {
+	s := mapKeySorter{
+		vs: vs,
+		// default Less function: textual comparison
+		less: func(a, b reflect.Value) bool {
+			return fmt.Sprint(a.Interface()) < fmt.Sprint(b.Interface())
+		},
+	}
+
+	// Type specialization per https://developers.google.com/protocol-buffers/docs/proto#maps;
+	// numeric keys are sorted numerically.
+	if len(vs) == 0 {
+		return s
+	}
+	switch vs[0].Kind() {
+	case reflect.Int32, reflect.Int64:
+		s.less = func(a, b reflect.Value) bool { return a.Int() < b.Int() }
+	case reflect.Uint32, reflect.Uint64:
+		s.less = func(a, b reflect.Value) bool { return a.Uint() < b.Uint() }
+	}
+
+	return s
+}
+
+type mapKeySorter struct {
+	vs   []reflect.Value
+	less func(a, b reflect.Value) bool
+}
+
+func (s mapKeySorter) Len() int      { return len(s.vs) }
+func (s mapKeySorter) Swap(i, j int) { s.vs[i], s.vs[j] = s.vs[j], s.vs[i] }
+func (s mapKeySorter) Less(i, j int) bool {
+	return s.less(s.vs[i], s.vs[j])
+}
+
+// isProto3Zero reports whether v is a zero proto3 value.
+func isProto3Zero(v reflect.Value) bool {
+	switch v.Kind() {
+	case reflect.Bool:
+		return !v.Bool()
+	case reflect.Int32, reflect.Int64:
+		return v.Int() == 0
+	case reflect.Uint32, reflect.Uint64:
+		return v.Uint() == 0
+	case reflect.Float32, reflect.Float64:
+		return v.Float() == 0
+	case reflect.String:
+		return v.String() == ""
+	}
+	return false
+}
+
+// ProtoPackageIsVersion2 is referenced from generated protocol buffer files
+// to assert that that code is compatible with this version of the proto package.
+const ProtoPackageIsVersion2 = true
+
+// ProtoPackageIsVersion1 is referenced from generated protocol buffer files
+// to assert that that code is compatible with this version of the proto package.
+const ProtoPackageIsVersion1 = true
diff --git a/vendor/github.com/golang/protobuf/proto/map_test.go b/vendor/github.com/golang/protobuf/proto/map_test.go
new file mode 100644
index 000000000..313e87924
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/map_test.go
@@ -0,0 +1,46 @@
+package proto_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+	ppb "github.com/golang/protobuf/proto/proto3_proto"
+)
+
+func marshalled() []byte {
+	m := &ppb.IntMaps{}
+	for i := 0; i < 1000; i++ {
+		m.Maps = append(m.Maps, &ppb.IntMap{
+			Rtt: map[int32]int32{1: 2},
+		})
+	}
+	b, err := proto.Marshal(m)
+	if err != nil {
+		panic(fmt.Sprintf("Can't marshal %+v: %v", m, err))
+	}
+	return b
+}
+
+func BenchmarkConcurrentMapUnmarshal(b *testing.B) {
+	in := marshalled()
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			var out ppb.IntMaps
+			if err := proto.Unmarshal(in, &out); err != nil {
+				b.Errorf("Can't unmarshal ppb.IntMaps: %v", err)
+			}
+		}
+	})
+}
+
+func BenchmarkSequentialMapUnmarshal(b *testing.B) {
+	in := marshalled()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		var out ppb.IntMaps
+		if err := proto.Unmarshal(in, &out); err != nil {
+			b.Errorf("Can't unmarshal ppb.IntMaps: %v", err)
+		}
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/message_set.go b/vendor/github.com/golang/protobuf/proto/message_set.go
new file mode 100644
index 000000000..fd982decd
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/message_set.go
@@ -0,0 +1,311 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto
+
+/*
+ * Support for message sets.
+ */
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"reflect"
+	"sort"
+)
+
+// errNoMessageTypeID occurs when a protocol buffer does not have a message type ID.
+// A message type ID is required for storing a protocol buffer in a message set.
+var errNoMessageTypeID = errors.New("proto does not have a message type ID")
+
+// The first two types (_MessageSet_Item and messageSet)
+// model what the protocol compiler produces for the following protocol message:
+//   message MessageSet {
+//     repeated group Item = 1 {
+//       required int32 type_id = 2;
+//       required string message = 3;
+//     };
+//   }
+// That is the MessageSet wire format. We can't use a proto to generate these
+// because that would introduce a circular dependency between it and this package.
+
+type _MessageSet_Item struct {
+	TypeId  *int32 `protobuf:"varint,2,req,name=type_id"`
+	Message []byte `protobuf:"bytes,3,req,name=message"`
+}
+
+type messageSet struct {
+	Item             []*_MessageSet_Item `protobuf:"group,1,rep"`
+	XXX_unrecognized []byte
+	// TODO: caching?
+}
+
+// Make sure messageSet is a Message.
+var _ Message = (*messageSet)(nil)
+
+// messageTypeIder is an interface satisfied by a protocol buffer type
+// that may be stored in a MessageSet.
+type messageTypeIder interface {
+	MessageTypeId() int32
+}
+
+func (ms *messageSet) find(pb Message) *_MessageSet_Item {
+	mti, ok := pb.(messageTypeIder)
+	if !ok {
+		return nil
+	}
+	id := mti.MessageTypeId()
+	for _, item := range ms.Item {
+		if *item.TypeId == id {
+			return item
+		}
+	}
+	return nil
+}
+
+func (ms *messageSet) Has(pb Message) bool {
+	if ms.find(pb) != nil {
+		return true
+	}
+	return false
+}
+
+func (ms *messageSet) Unmarshal(pb Message) error {
+	if item := ms.find(pb); item != nil {
+		return Unmarshal(item.Message, pb)
+	}
+	if _, ok := pb.(messageTypeIder); !ok {
+		return errNoMessageTypeID
+	}
+	return nil // TODO: return error instead?
+}
+
+func (ms *messageSet) Marshal(pb Message) error {
+	msg, err := Marshal(pb)
+	if err != nil {
+		return err
+	}
+	if item := ms.find(pb); item != nil {
+		// reuse existing item
+		item.Message = msg
+		return nil
+	}
+
+	mti, ok := pb.(messageTypeIder)
+	if !ok {
+		return errNoMessageTypeID
+	}
+
+	mtid := mti.MessageTypeId()
+	ms.Item = append(ms.Item, &_MessageSet_Item{
+		TypeId:  &mtid,
+		Message: msg,
+	})
+	return nil
+}
+
+func (ms *messageSet) Reset()         { *ms = messageSet{} }
+func (ms *messageSet) String() string { return CompactTextString(ms) }
+func (*messageSet) ProtoMessage()     {}
+
+// Support for the message_set_wire_format message option.
+
+func skipVarint(buf []byte) []byte {
+	i := 0
+	for ; buf[i]&0x80 != 0; i++ {
+	}
+	return buf[i+1:]
+}
+
+// MarshalMessageSet encodes the extension map represented by m in the message set wire format.
+// It is called by generated Marshal methods on protocol buffer messages with the message_set_wire_format option.
+func MarshalMessageSet(exts interface{}) ([]byte, error) {
+	var m map[int32]Extension
+	switch exts := exts.(type) {
+	case *XXX_InternalExtensions:
+		if err := encodeExtensions(exts); err != nil {
+			return nil, err
+		}
+		m, _ = exts.extensionsRead()
+	case map[int32]Extension:
+		if err := encodeExtensionsMap(exts); err != nil {
+			return nil, err
+		}
+		m = exts
+	default:
+		return nil, errors.New("proto: not an extension map")
+	}
+
+	// Sort extension IDs to provide a deterministic encoding.
+	// See also enc_map in encode.go.
+	ids := make([]int, 0, len(m))
+	for id := range m {
+		ids = append(ids, int(id))
+	}
+	sort.Ints(ids)
+
+	ms := &messageSet{Item: make([]*_MessageSet_Item, 0, len(m))}
+	for _, id := range ids {
+		e := m[int32(id)]
+		// Remove the wire type and field number varint, as well as the length varint.
+		msg := skipVarint(skipVarint(e.enc))
+
+		ms.Item = append(ms.Item, &_MessageSet_Item{
+			TypeId:  Int32(int32(id)),
+			Message: msg,
+		})
+	}
+	return Marshal(ms)
+}
+
+// UnmarshalMessageSet decodes the extension map encoded in buf in the message set wire format.
+// It is called by generated Unmarshal methods on protocol buffer messages with the message_set_wire_format option.
+func UnmarshalMessageSet(buf []byte, exts interface{}) error {
+	var m map[int32]Extension
+	switch exts := exts.(type) {
+	case *XXX_InternalExtensions:
+		m = exts.extensionsWrite()
+	case map[int32]Extension:
+		m = exts
+	default:
+		return errors.New("proto: not an extension map")
+	}
+
+	ms := new(messageSet)
+	if err := Unmarshal(buf, ms); err != nil {
+		return err
+	}
+	for _, item := range ms.Item {
+		id := *item.TypeId
+		msg := item.Message
+
+		// Restore wire type and field number varint, plus length varint.
+		// Be careful to preserve duplicate items.
+		b := EncodeVarint(uint64(id)<<3 | WireBytes)
+		if ext, ok := m[id]; ok {
+			// Existing data; rip off the tag and length varint
+			// so we join the new data correctly.
+			// We can assume that ext.enc is set because we are unmarshaling.
+			o := ext.enc[len(b):]   // skip wire type and field number
+			_, n := DecodeVarint(o) // calculate length of length varint
+			o = o[n:]               // skip length varint
+			msg = append(o, msg...) // join old data and new data
+		}
+		b = append(b, EncodeVarint(uint64(len(msg)))...)
+		b = append(b, msg...)
+
+		m[id] = Extension{enc: b}
+	}
+	return nil
+}
+
+// MarshalMessageSetJSON encodes the extension map represented by m in JSON format.
+// It is called by generated MarshalJSON methods on protocol buffer messages with the message_set_wire_format option.
+func MarshalMessageSetJSON(exts interface{}) ([]byte, error) {
+	var m map[int32]Extension
+	switch exts := exts.(type) {
+	case *XXX_InternalExtensions:
+		m, _ = exts.extensionsRead()
+	case map[int32]Extension:
+		m = exts
+	default:
+		return nil, errors.New("proto: not an extension map")
+	}
+	var b bytes.Buffer
+	b.WriteByte('{')
+
+	// Process the map in key order for deterministic output.
+	ids := make([]int32, 0, len(m))
+	for id := range m {
+		ids = append(ids, id)
+	}
+	sort.Sort(int32Slice(ids)) // int32Slice defined in text.go
+
+	for i, id := range ids {
+		ext := m[id]
+		if i > 0 {
+			b.WriteByte(',')
+		}
+
+		msd, ok := messageSetMap[id]
+		if !ok {
+			// Unknown type; we can't render it, so skip it.
+			continue
+		}
+		fmt.Fprintf(&b, `"[%s]":`, msd.name)
+
+		x := ext.value
+		if x == nil {
+			x = reflect.New(msd.t.Elem()).Interface()
+			if err := Unmarshal(ext.enc, x.(Message)); err != nil {
+				return nil, err
+			}
+		}
+		d, err := json.Marshal(x)
+		if err != nil {
+			return nil, err
+		}
+		b.Write(d)
+	}
+	b.WriteByte('}')
+	return b.Bytes(), nil
+}
+
+// UnmarshalMessageSetJSON decodes the extension map encoded in buf in JSON format.
+// It is called by generated UnmarshalJSON methods on protocol buffer messages with the message_set_wire_format option.
+func UnmarshalMessageSetJSON(buf []byte, exts interface{}) error {
+	// Common-case fast path.
+	if len(buf) == 0 || bytes.Equal(buf, []byte("{}")) {
+		return nil
+	}
+
+	// This is fairly tricky, and it's not clear that it is needed.
+	return errors.New("TODO: UnmarshalMessageSetJSON not yet implemented")
+}
+
+// A global registry of types that can be used in a MessageSet.
+
+var messageSetMap = make(map[int32]messageSetDesc)
+
+type messageSetDesc struct {
+	t    reflect.Type // pointer to struct
+	name string
+}
+
+// RegisterMessageSetType is called from the generated code.
+func RegisterMessageSetType(m Message, fieldNum int32, name string) {
+	messageSetMap[fieldNum] = messageSetDesc{
+		t:    reflect.TypeOf(m),
+		name: name,
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/message_set_test.go b/vendor/github.com/golang/protobuf/proto/message_set_test.go
new file mode 100644
index 000000000..353a3ea76
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/message_set_test.go
@@ -0,0 +1,66 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2014 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto
+
+import (
+	"bytes"
+	"testing"
+)
+
+func TestUnmarshalMessageSetWithDuplicate(t *testing.T) {
+	// Check that a repeated message set entry will be concatenated.
+	in := &messageSet{
+		Item: []*_MessageSet_Item{
+			{TypeId: Int32(12345), Message: []byte("hoo")},
+			{TypeId: Int32(12345), Message: []byte("hah")},
+		},
+	}
+	b, err := Marshal(in)
+	if err != nil {
+		t.Fatalf("Marshal: %v", err)
+	}
+	t.Logf("Marshaled bytes: %q", b)
+
+	var extensions XXX_InternalExtensions
+	if err := UnmarshalMessageSet(b, &extensions); err != nil {
+		t.Fatalf("UnmarshalMessageSet: %v", err)
+	}
+	ext, ok := extensions.p.extensionMap[12345]
+	if !ok {
+		t.Fatalf("Didn't retrieve extension 12345; map is %v", extensions.p.extensionMap)
+	}
+	// Skip wire type/field number and length varints.
+	got := skipVarint(skipVarint(ext.enc))
+	if want := []byte("hoohah"); !bytes.Equal(got, want) {
+		t.Errorf("Combined extension is %q, want %q", got, want)
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/pointer_reflect.go b/vendor/github.com/golang/protobuf/proto/pointer_reflect.go
new file mode 100644
index 000000000..fb512e2e1
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/pointer_reflect.go
@@ -0,0 +1,484 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2012 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// +build appengine js
+
+// This file contains an implementation of proto field accesses using package reflect.
+// It is slower than the code in pointer_unsafe.go but it avoids package unsafe and can
+// be used on App Engine.
+
+package proto
+
+import (
+	"math"
+	"reflect"
+)
+
+// A structPointer is a pointer to a struct.
+type structPointer struct {
+	v reflect.Value
+}
+
+// toStructPointer returns a structPointer equivalent to the given reflect value.
+// The reflect value must itself be a pointer to a struct.
+func toStructPointer(v reflect.Value) structPointer {
+	return structPointer{v}
+}
+
+// IsNil reports whether p is nil.
+func structPointer_IsNil(p structPointer) bool {
+	return p.v.IsNil()
+}
+
+// Interface returns the struct pointer as an interface value.
+func structPointer_Interface(p structPointer, _ reflect.Type) interface{} {
+	return p.v.Interface()
+}
+
+// A field identifies a field in a struct, accessible from a structPointer.
+// In this implementation, a field is identified by the sequence of field indices
+// passed to reflect's FieldByIndex.
+type field []int
+
+// toField returns a field equivalent to the given reflect field.
+func toField(f *reflect.StructField) field {
+	return f.Index
+}
+
+// invalidField is an invalid field identifier.
+var invalidField = field(nil)
+
+// IsValid reports whether the field identifier is valid.
+func (f field) IsValid() bool { return f != nil }
+
+// field returns the given field in the struct as a reflect value.
+func structPointer_field(p structPointer, f field) reflect.Value {
+	// Special case: an extension map entry with a value of type T
+	// passes a *T to the struct-handling code with a zero field,
+	// expecting that it will be treated as equivalent to *struct{ X T },
+	// which has the same memory layout. We have to handle that case
+	// specially, because reflect will panic if we call FieldByIndex on a
+	// non-struct.
+	if f == nil {
+		return p.v.Elem()
+	}
+
+	return p.v.Elem().FieldByIndex(f)
+}
+
+// ifield returns the given field in the struct as an interface value.
+func structPointer_ifield(p structPointer, f field) interface{} {
+	return structPointer_field(p, f).Addr().Interface()
+}
+
+// Bytes returns the address of a []byte field in the struct.
+func structPointer_Bytes(p structPointer, f field) *[]byte {
+	return structPointer_ifield(p, f).(*[]byte)
+}
+
+// BytesSlice returns the address of a [][]byte field in the struct.
+func structPointer_BytesSlice(p structPointer, f field) *[][]byte {
+	return structPointer_ifield(p, f).(*[][]byte)
+}
+
+// Bool returns the address of a *bool field in the struct.
+func structPointer_Bool(p structPointer, f field) **bool {
+	return structPointer_ifield(p, f).(**bool)
+}
+
+// BoolVal returns the address of a bool field in the struct.
+func structPointer_BoolVal(p structPointer, f field) *bool {
+	return structPointer_ifield(p, f).(*bool)
+}
+
+// BoolSlice returns the address of a []bool field in the struct.
+func structPointer_BoolSlice(p structPointer, f field) *[]bool {
+	return structPointer_ifield(p, f).(*[]bool)
+}
+
+// String returns the address of a *string field in the struct.
+func structPointer_String(p structPointer, f field) **string {
+	return structPointer_ifield(p, f).(**string)
+}
+
+// StringVal returns the address of a string field in the struct.
+func structPointer_StringVal(p structPointer, f field) *string {
+	return structPointer_ifield(p, f).(*string)
+}
+
+// StringSlice returns the address of a []string field in the struct.
+func structPointer_StringSlice(p structPointer, f field) *[]string {
+	return structPointer_ifield(p, f).(*[]string)
+}
+
+// Extensions returns the address of an extension map field in the struct.
+func structPointer_Extensions(p structPointer, f field) *XXX_InternalExtensions {
+	return structPointer_ifield(p, f).(*XXX_InternalExtensions)
+}
+
+// ExtMap returns the address of an extension map field in the struct.
+func structPointer_ExtMap(p structPointer, f field) *map[int32]Extension {
+	return structPointer_ifield(p, f).(*map[int32]Extension)
+}
+
+// NewAt returns the reflect.Value for a pointer to a field in the struct.
+func structPointer_NewAt(p structPointer, f field, typ reflect.Type) reflect.Value {
+	return structPointer_field(p, f).Addr()
+}
+
+// SetStructPointer writes a *struct field in the struct.
+func structPointer_SetStructPointer(p structPointer, f field, q structPointer) {
+	structPointer_field(p, f).Set(q.v)
+}
+
+// GetStructPointer reads a *struct field in the struct.
+func structPointer_GetStructPointer(p structPointer, f field) structPointer {
+	return structPointer{structPointer_field(p, f)}
+}
+
+// StructPointerSlice the address of a []*struct field in the struct.
+func structPointer_StructPointerSlice(p structPointer, f field) structPointerSlice {
+	return structPointerSlice{structPointer_field(p, f)}
+}
+
+// A structPointerSlice represents the address of a slice of pointers to structs
+// (themselves messages or groups). That is, v.Type() is *[]*struct{...}.
+type structPointerSlice struct {
+	v reflect.Value
+}
+
+func (p structPointerSlice) Len() int                  { return p.v.Len() }
+func (p structPointerSlice) Index(i int) structPointer { return structPointer{p.v.Index(i)} }
+func (p structPointerSlice) Append(q structPointer) {
+	p.v.Set(reflect.Append(p.v, q.v))
+}
+
+var (
+	int32Type   = reflect.TypeOf(int32(0))
+	uint32Type  = reflect.TypeOf(uint32(0))
+	float32Type = reflect.TypeOf(float32(0))
+	int64Type   = reflect.TypeOf(int64(0))
+	uint64Type  = reflect.TypeOf(uint64(0))
+	float64Type = reflect.TypeOf(float64(0))
+)
+
+// A word32 represents a field of type *int32, *uint32, *float32, or *enum.
+// That is, v.Type() is *int32, *uint32, *float32, or *enum and v is assignable.
+type word32 struct {
+	v reflect.Value
+}
+
+// IsNil reports whether p is nil.
+func word32_IsNil(p word32) bool {
+	return p.v.IsNil()
+}
+
+// Set sets p to point at a newly allocated word with bits set to x.
+func word32_Set(p word32, o *Buffer, x uint32) {
+	t := p.v.Type().Elem()
+	switch t {
+	case int32Type:
+		if len(o.int32s) == 0 {
+			o.int32s = make([]int32, uint32PoolSize)
+		}
+		o.int32s[0] = int32(x)
+		p.v.Set(reflect.ValueOf(&o.int32s[0]))
+		o.int32s = o.int32s[1:]
+		return
+	case uint32Type:
+		if len(o.uint32s) == 0 {
+			o.uint32s = make([]uint32, uint32PoolSize)
+		}
+		o.uint32s[0] = x
+		p.v.Set(reflect.ValueOf(&o.uint32s[0]))
+		o.uint32s = o.uint32s[1:]
+		return
+	case float32Type:
+		if len(o.float32s) == 0 {
+			o.float32s = make([]float32, uint32PoolSize)
+		}
+		o.float32s[0] = math.Float32frombits(x)
+		p.v.Set(reflect.ValueOf(&o.float32s[0]))
+		o.float32s = o.float32s[1:]
+		return
+	}
+
+	// must be enum
+	p.v.Set(reflect.New(t))
+	p.v.Elem().SetInt(int64(int32(x)))
+}
+
+// Get gets the bits pointed at by p, as a uint32.
+func word32_Get(p word32) uint32 {
+	elem := p.v.Elem()
+	switch elem.Kind() {
+	case reflect.Int32:
+		return uint32(elem.Int())
+	case reflect.Uint32:
+		return uint32(elem.Uint())
+	case reflect.Float32:
+		return math.Float32bits(float32(elem.Float()))
+	}
+	panic("unreachable")
+}
+
+// Word32 returns a reference to a *int32, *uint32, *float32, or *enum field in the struct.
+func structPointer_Word32(p structPointer, f field) word32 {
+	return word32{structPointer_field(p, f)}
+}
+
+// A word32Val represents a field of type int32, uint32, float32, or enum.
+// That is, v.Type() is int32, uint32, float32, or enum and v is assignable.
+type word32Val struct {
+	v reflect.Value
+}
+
+// Set sets *p to x.
+func word32Val_Set(p word32Val, x uint32) {
+	switch p.v.Type() {
+	case int32Type:
+		p.v.SetInt(int64(x))
+		return
+	case uint32Type:
+		p.v.SetUint(uint64(x))
+		return
+	case float32Type:
+		p.v.SetFloat(float64(math.Float32frombits(x)))
+		return
+	}
+
+	// must be enum
+	p.v.SetInt(int64(int32(x)))
+}
+
+// Get gets the bits pointed at by p, as a uint32.
+func word32Val_Get(p word32Val) uint32 {
+	elem := p.v
+	switch elem.Kind() {
+	case reflect.Int32:
+		return uint32(elem.Int())
+	case reflect.Uint32:
+		return uint32(elem.Uint())
+	case reflect.Float32:
+		return math.Float32bits(float32(elem.Float()))
+	}
+	panic("unreachable")
+}
+
+// Word32Val returns a reference to a int32, uint32, float32, or enum field in the struct.
+func structPointer_Word32Val(p structPointer, f field) word32Val {
+	return word32Val{structPointer_field(p, f)}
+}
+
+// A word32Slice is a slice of 32-bit values.
+// That is, v.Type() is []int32, []uint32, []float32, or []enum.
+type word32Slice struct {
+	v reflect.Value
+}
+
+func (p word32Slice) Append(x uint32) {
+	n, m := p.v.Len(), p.v.Cap()
+	if n < m {
+		p.v.SetLen(n + 1)
+	} else {
+		t := p.v.Type().Elem()
+		p.v.Set(reflect.Append(p.v, reflect.Zero(t)))
+	}
+	elem := p.v.Index(n)
+	switch elem.Kind() {
+	case reflect.Int32:
+		elem.SetInt(int64(int32(x)))
+	case reflect.Uint32:
+		elem.SetUint(uint64(x))
+	case reflect.Float32:
+		elem.SetFloat(float64(math.Float32frombits(x)))
+	}
+}
+
+func (p word32Slice) Len() int {
+	return p.v.Len()
+}
+
+func (p word32Slice) Index(i int) uint32 {
+	elem := p.v.Index(i)
+	switch elem.Kind() {
+	case reflect.Int32:
+		return uint32(elem.Int())
+	case reflect.Uint32:
+		return uint32(elem.Uint())
+	case reflect.Float32:
+		return math.Float32bits(float32(elem.Float()))
+	}
+	panic("unreachable")
+}
+
+// Word32Slice returns a reference to a []int32, []uint32, []float32, or []enum field in the struct.
+func structPointer_Word32Slice(p structPointer, f field) word32Slice {
+	return word32Slice{structPointer_field(p, f)}
+}
+
+// word64 is like word32 but for 64-bit values.
+type word64 struct {
+	v reflect.Value
+}
+
+func word64_Set(p word64, o *Buffer, x uint64) {
+	t := p.v.Type().Elem()
+	switch t {
+	case int64Type:
+		if len(o.int64s) == 0 {
+			o.int64s = make([]int64, uint64PoolSize)
+		}
+		o.int64s[0] = int64(x)
+		p.v.Set(reflect.ValueOf(&o.int64s[0]))
+		o.int64s = o.int64s[1:]
+		return
+	case uint64Type:
+		if len(o.uint64s) == 0 {
+			o.uint64s = make([]uint64, uint64PoolSize)
+		}
+		o.uint64s[0] = x
+		p.v.Set(reflect.ValueOf(&o.uint64s[0]))
+		o.uint64s = o.uint64s[1:]
+		return
+	case float64Type:
+		if len(o.float64s) == 0 {
+			o.float64s = make([]float64, uint64PoolSize)
+		}
+		o.float64s[0] = math.Float64frombits(x)
+		p.v.Set(reflect.ValueOf(&o.float64s[0]))
+		o.float64s = o.float64s[1:]
+		return
+	}
+	panic("unreachable")
+}
+
+func word64_IsNil(p word64) bool {
+	return p.v.IsNil()
+}
+
+func word64_Get(p word64) uint64 {
+	elem := p.v.Elem()
+	switch elem.Kind() {
+	case reflect.Int64:
+		return uint64(elem.Int())
+	case reflect.Uint64:
+		return elem.Uint()
+	case reflect.Float64:
+		return math.Float64bits(elem.Float())
+	}
+	panic("unreachable")
+}
+
+func structPointer_Word64(p structPointer, f field) word64 {
+	return word64{structPointer_field(p, f)}
+}
+
+// word64Val is like word32Val but for 64-bit values.
+type word64Val struct {
+	v reflect.Value
+}
+
+func word64Val_Set(p word64Val, o *Buffer, x uint64) {
+	switch p.v.Type() {
+	case int64Type:
+		p.v.SetInt(int64(x))
+		return
+	case uint64Type:
+		p.v.SetUint(x)
+		return
+	case float64Type:
+		p.v.SetFloat(math.Float64frombits(x))
+		return
+	}
+	panic("unreachable")
+}
+
+func word64Val_Get(p word64Val) uint64 {
+	elem := p.v
+	switch elem.Kind() {
+	case reflect.Int64:
+		return uint64(elem.Int())
+	case reflect.Uint64:
+		return elem.Uint()
+	case reflect.Float64:
+		return math.Float64bits(elem.Float())
+	}
+	panic("unreachable")
+}
+
+func structPointer_Word64Val(p structPointer, f field) word64Val {
+	return word64Val{structPointer_field(p, f)}
+}
+
+type word64Slice struct {
+	v reflect.Value
+}
+
+func (p word64Slice) Append(x uint64) {
+	n, m := p.v.Len(), p.v.Cap()
+	if n < m {
+		p.v.SetLen(n + 1)
+	} else {
+		t := p.v.Type().Elem()
+		p.v.Set(reflect.Append(p.v, reflect.Zero(t)))
+	}
+	elem := p.v.Index(n)
+	switch elem.Kind() {
+	case reflect.Int64:
+		elem.SetInt(int64(int64(x)))
+	case reflect.Uint64:
+		elem.SetUint(uint64(x))
+	case reflect.Float64:
+		elem.SetFloat(float64(math.Float64frombits(x)))
+	}
+}
+
+func (p word64Slice) Len() int {
+	return p.v.Len()
+}
+
+func (p word64Slice) Index(i int) uint64 {
+	elem := p.v.Index(i)
+	switch elem.Kind() {
+	case reflect.Int64:
+		return uint64(elem.Int())
+	case reflect.Uint64:
+		return uint64(elem.Uint())
+	case reflect.Float64:
+		return math.Float64bits(float64(elem.Float()))
+	}
+	panic("unreachable")
+}
+
+func structPointer_Word64Slice(p structPointer, f field) word64Slice {
+	return word64Slice{structPointer_field(p, f)}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/pointer_unsafe.go b/vendor/github.com/golang/protobuf/proto/pointer_unsafe.go
new file mode 100644
index 000000000..6b5567d47
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/pointer_unsafe.go
@@ -0,0 +1,270 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2012 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// +build !appengine,!js
+
+// This file contains the implementation of the proto field accesses using package unsafe.
+
+package proto
+
+import (
+	"reflect"
+	"unsafe"
+)
+
+// NOTE: These type_Foo functions would more idiomatically be methods,
+// but Go does not allow methods on pointer types, and we must preserve
+// some pointer type for the garbage collector. We use these
+// funcs with clunky names as our poor approximation to methods.
+//
+// An alternative would be
+//	type structPointer struct { p unsafe.Pointer }
+// but that does not registerize as well.
+
+// A structPointer is a pointer to a struct.
+type structPointer unsafe.Pointer
+
+// toStructPointer returns a structPointer equivalent to the given reflect value.
+func toStructPointer(v reflect.Value) structPointer {
+	return structPointer(unsafe.Pointer(v.Pointer()))
+}
+
+// IsNil reports whether p is nil.
+func structPointer_IsNil(p structPointer) bool {
+	return p == nil
+}
+
+// Interface returns the struct pointer, assumed to have element type t,
+// as an interface value.
+func structPointer_Interface(p structPointer, t reflect.Type) interface{} {
+	return reflect.NewAt(t, unsafe.Pointer(p)).Interface()
+}
+
+// A field identifies a field in a struct, accessible from a structPointer.
+// In this implementation, a field is identified by its byte offset from the start of the struct.
+type field uintptr
+
+// toField returns a field equivalent to the given reflect field.
+func toField(f *reflect.StructField) field {
+	return field(f.Offset)
+}
+
+// invalidField is an invalid field identifier.
+const invalidField = ^field(0)
+
+// IsValid reports whether the field identifier is valid.
+func (f field) IsValid() bool {
+	return f != ^field(0)
+}
+
+// Bytes returns the address of a []byte field in the struct.
+func structPointer_Bytes(p structPointer, f field) *[]byte {
+	return (*[]byte)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+// BytesSlice returns the address of a [][]byte field in the struct.
+func structPointer_BytesSlice(p structPointer, f field) *[][]byte {
+	return (*[][]byte)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+// Bool returns the address of a *bool field in the struct.
+func structPointer_Bool(p structPointer, f field) **bool {
+	return (**bool)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+// BoolVal returns the address of a bool field in the struct.
+func structPointer_BoolVal(p structPointer, f field) *bool {
+	return (*bool)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+// BoolSlice returns the address of a []bool field in the struct.
+func structPointer_BoolSlice(p structPointer, f field) *[]bool {
+	return (*[]bool)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+// String returns the address of a *string field in the struct.
+func structPointer_String(p structPointer, f field) **string {
+	return (**string)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+// StringVal returns the address of a string field in the struct.
+func structPointer_StringVal(p structPointer, f field) *string {
+	return (*string)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+// StringSlice returns the address of a []string field in the struct.
+func structPointer_StringSlice(p structPointer, f field) *[]string {
+	return (*[]string)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+// ExtMap returns the address of an extension map field in the struct.
+func structPointer_Extensions(p structPointer, f field) *XXX_InternalExtensions {
+	return (*XXX_InternalExtensions)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+func structPointer_ExtMap(p structPointer, f field) *map[int32]Extension {
+	return (*map[int32]Extension)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+// NewAt returns the reflect.Value for a pointer to a field in the struct.
+func structPointer_NewAt(p structPointer, f field, typ reflect.Type) reflect.Value {
+	return reflect.NewAt(typ, unsafe.Pointer(uintptr(p)+uintptr(f)))
+}
+
+// SetStructPointer writes a *struct field in the struct.
+func structPointer_SetStructPointer(p structPointer, f field, q structPointer) {
+	*(*structPointer)(unsafe.Pointer(uintptr(p) + uintptr(f))) = q
+}
+
+// GetStructPointer reads a *struct field in the struct.
+func structPointer_GetStructPointer(p structPointer, f field) structPointer {
+	return *(*structPointer)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+// StructPointerSlice the address of a []*struct field in the struct.
+func structPointer_StructPointerSlice(p structPointer, f field) *structPointerSlice {
+	return (*structPointerSlice)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+// A structPointerSlice represents a slice of pointers to structs (themselves submessages or groups).
+type structPointerSlice []structPointer
+
+func (v *structPointerSlice) Len() int                  { return len(*v) }
+func (v *structPointerSlice) Index(i int) structPointer { return (*v)[i] }
+func (v *structPointerSlice) Append(p structPointer)    { *v = append(*v, p) }
+
+// A word32 is the address of a "pointer to 32-bit value" field.
+type word32 **uint32
+
+// IsNil reports whether *v is nil.
+func word32_IsNil(p word32) bool {
+	return *p == nil
+}
+
+// Set sets *v to point at a newly allocated word set to x.
+func word32_Set(p word32, o *Buffer, x uint32) {
+	if len(o.uint32s) == 0 {
+		o.uint32s = make([]uint32, uint32PoolSize)
+	}
+	o.uint32s[0] = x
+	*p = &o.uint32s[0]
+	o.uint32s = o.uint32s[1:]
+}
+
+// Get gets the value pointed at by *v.
+func word32_Get(p word32) uint32 {
+	return **p
+}
+
+// Word32 returns the address of a *int32, *uint32, *float32, or *enum field in the struct.
+func structPointer_Word32(p structPointer, f field) word32 {
+	return word32((**uint32)(unsafe.Pointer(uintptr(p) + uintptr(f))))
+}
+
+// A word32Val is the address of a 32-bit value field.
+type word32Val *uint32
+
+// Set sets *p to x.
+func word32Val_Set(p word32Val, x uint32) {
+	*p = x
+}
+
+// Get gets the value pointed at by p.
+func word32Val_Get(p word32Val) uint32 {
+	return *p
+}
+
+// Word32Val returns the address of a *int32, *uint32, *float32, or *enum field in the struct.
+func structPointer_Word32Val(p structPointer, f field) word32Val {
+	return word32Val((*uint32)(unsafe.Pointer(uintptr(p) + uintptr(f))))
+}
+
+// A word32Slice is a slice of 32-bit values.
+type word32Slice []uint32
+
+func (v *word32Slice) Append(x uint32)    { *v = append(*v, x) }
+func (v *word32Slice) Len() int           { return len(*v) }
+func (v *word32Slice) Index(i int) uint32 { return (*v)[i] }
+
+// Word32Slice returns the address of a []int32, []uint32, []float32, or []enum field in the struct.
+func structPointer_Word32Slice(p structPointer, f field) *word32Slice {
+	return (*word32Slice)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
+// word64 is like word32 but for 64-bit values.
+type word64 **uint64
+
+func word64_Set(p word64, o *Buffer, x uint64) {
+	if len(o.uint64s) == 0 {
+		o.uint64s = make([]uint64, uint64PoolSize)
+	}
+	o.uint64s[0] = x
+	*p = &o.uint64s[0]
+	o.uint64s = o.uint64s[1:]
+}
+
+func word64_IsNil(p word64) bool {
+	return *p == nil
+}
+
+func word64_Get(p word64) uint64 {
+	return **p
+}
+
+func structPointer_Word64(p structPointer, f field) word64 {
+	return word64((**uint64)(unsafe.Pointer(uintptr(p) + uintptr(f))))
+}
+
+// word64Val is like word32Val but for 64-bit values.
+type word64Val *uint64
+
+func word64Val_Set(p word64Val, o *Buffer, x uint64) {
+	*p = x
+}
+
+func word64Val_Get(p word64Val) uint64 {
+	return *p
+}
+
+func structPointer_Word64Val(p structPointer, f field) word64Val {
+	return word64Val((*uint64)(unsafe.Pointer(uintptr(p) + uintptr(f))))
+}
+
+// word64Slice is like word32Slice but for 64-bit values.
+type word64Slice []uint64
+
+func (v *word64Slice) Append(x uint64)    { *v = append(*v, x) }
+func (v *word64Slice) Len() int           { return len(*v) }
+func (v *word64Slice) Index(i int) uint64 { return (*v)[i] }
+
+func structPointer_Word64Slice(p structPointer, f field) *word64Slice {
+	return (*word64Slice)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
diff --git a/vendor/github.com/golang/protobuf/proto/properties.go b/vendor/github.com/golang/protobuf/proto/properties.go
new file mode 100644
index 000000000..ec2289c00
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/properties.go
@@ -0,0 +1,872 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto
+
+/*
+ * Routines for encoding data into the wire format for protocol buffers.
+ */
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"reflect"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+)
+
+const debug bool = false
+
+// Constants that identify the encoding of a value on the wire.
+const (
+	WireVarint     = 0
+	WireFixed64    = 1
+	WireBytes      = 2
+	WireStartGroup = 3
+	WireEndGroup   = 4
+	WireFixed32    = 5
+)
+
+const startSize = 10 // initial slice/string sizes
+
+// Encoders are defined in encode.go
+// An encoder outputs the full representation of a field, including its
+// tag and encoder type.
+type encoder func(p *Buffer, prop *Properties, base structPointer) error
+
+// A valueEncoder encodes a single integer in a particular encoding.
+type valueEncoder func(o *Buffer, x uint64) error
+
+// Sizers are defined in encode.go
+// A sizer returns the encoded size of a field, including its tag and encoder
+// type.
+type sizer func(prop *Properties, base structPointer) int
+
+// A valueSizer returns the encoded size of a single integer in a particular
+// encoding.
+type valueSizer func(x uint64) int
+
+// Decoders are defined in decode.go
+// A decoder creates a value from its wire representation.
+// Unrecognized subelements are saved in unrec.
+type decoder func(p *Buffer, prop *Properties, base structPointer) error
+
+// A valueDecoder decodes a single integer in a particular encoding.
+type valueDecoder func(o *Buffer) (x uint64, err error)
+
+// A oneofMarshaler does the marshaling for all oneof fields in a message.
+type oneofMarshaler func(Message, *Buffer) error
+
+// A oneofUnmarshaler does the unmarshaling for a oneof field in a message.
+type oneofUnmarshaler func(Message, int, int, *Buffer) (bool, error)
+
+// A oneofSizer does the sizing for all oneof fields in a message.
+type oneofSizer func(Message) int
+
+// tagMap is an optimization over map[int]int for typical protocol buffer
+// use-cases. Encoded protocol buffers are often in tag order with small tag
+// numbers.
+type tagMap struct {
+	fastTags []int
+	slowTags map[int]int
+}
+
+// tagMapFastLimit is the upper bound on the tag number that will be stored in
+// the tagMap slice rather than its map.
+const tagMapFastLimit = 1024
+
+func (p *tagMap) get(t int) (int, bool) {
+	if t > 0 && t < tagMapFastLimit {
+		if t >= len(p.fastTags) {
+			return 0, false
+		}
+		fi := p.fastTags[t]
+		return fi, fi >= 0
+	}
+	fi, ok := p.slowTags[t]
+	return fi, ok
+}
+
+func (p *tagMap) put(t int, fi int) {
+	if t > 0 && t < tagMapFastLimit {
+		for len(p.fastTags) < t+1 {
+			p.fastTags = append(p.fastTags, -1)
+		}
+		p.fastTags[t] = fi
+		return
+	}
+	if p.slowTags == nil {
+		p.slowTags = make(map[int]int)
+	}
+	p.slowTags[t] = fi
+}
+
+// StructProperties represents properties for all the fields of a struct.
+// decoderTags and decoderOrigNames should only be used by the decoder.
+type StructProperties struct {
+	Prop             []*Properties  // properties for each field
+	reqCount         int            // required count
+	decoderTags      tagMap         // map from proto tag to struct field number
+	decoderOrigNames map[string]int // map from original name to struct field number
+	order            []int          // list of struct field numbers in tag order
+	unrecField       field          // field id of the XXX_unrecognized []byte field
+	extendable       bool           // is this an extendable proto
+
+	oneofMarshaler   oneofMarshaler
+	oneofUnmarshaler oneofUnmarshaler
+	oneofSizer       oneofSizer
+	stype            reflect.Type
+
+	// OneofTypes contains information about the oneof fields in this message.
+	// It is keyed by the original name of a field.
+	OneofTypes map[string]*OneofProperties
+}
+
+// OneofProperties represents information about a specific field in a oneof.
+type OneofProperties struct {
+	Type  reflect.Type // pointer to generated struct type for this oneof field
+	Field int          // struct field number of the containing oneof in the message
+	Prop  *Properties
+}
+
+// Implement the sorting interface so we can sort the fields in tag order, as recommended by the spec.
+// See encode.go, (*Buffer).enc_struct.
+
+func (sp *StructProperties) Len() int { return len(sp.order) }
+func (sp *StructProperties) Less(i, j int) bool {
+	return sp.Prop[sp.order[i]].Tag < sp.Prop[sp.order[j]].Tag
+}
+func (sp *StructProperties) Swap(i, j int) { sp.order[i], sp.order[j] = sp.order[j], sp.order[i] }
+
+// Properties represents the protocol-specific behavior of a single struct field.
+type Properties struct {
+	Name     string // name of the field, for error messages
+	OrigName string // original name before protocol compiler (always set)
+	JSONName string // name to use for JSON; determined by protoc
+	Wire     string
+	WireType int
+	Tag      int
+	Required bool
+	Optional bool
+	Repeated bool
+	Packed   bool   // relevant for repeated primitives only
+	Enum     string // set for enum types only
+	proto3   bool   // whether this is known to be a proto3 field; set for []byte only
+	oneof    bool   // whether this is a oneof field
+
+	Default    string // default value
+	HasDefault bool   // whether an explicit default was provided
+	def_uint64 uint64
+
+	enc           encoder
+	valEnc        valueEncoder // set for bool and numeric types only
+	field         field
+	tagcode       []byte // encoding of EncodeVarint((Tag<<3)|WireType)
+	tagbuf        [8]byte
+	stype         reflect.Type      // set for struct types only
+	sprop         *StructProperties // set for struct types only
+	isMarshaler   bool
+	isUnmarshaler bool
+
+	mtype    reflect.Type // set for map types only
+	mkeyprop *Properties  // set for map types only
+	mvalprop *Properties  // set for map types only
+
+	size    sizer
+	valSize valueSizer // set for bool and numeric types only
+
+	dec    decoder
+	valDec valueDecoder // set for bool and numeric types only
+
+	// If this is a packable field, this will be the decoder for the packed version of the field.
+	packedDec decoder
+}
+
+// String formats the properties in the protobuf struct field tag style.
+func (p *Properties) String() string {
+	s := p.Wire
+	s = ","
+	s += strconv.Itoa(p.Tag)
+	if p.Required {
+		s += ",req"
+	}
+	if p.Optional {
+		s += ",opt"
+	}
+	if p.Repeated {
+		s += ",rep"
+	}
+	if p.Packed {
+		s += ",packed"
+	}
+	s += ",name=" + p.OrigName
+	if p.JSONName != p.OrigName {
+		s += ",json=" + p.JSONName
+	}
+	if p.proto3 {
+		s += ",proto3"
+	}
+	if p.oneof {
+		s += ",oneof"
+	}
+	if len(p.Enum) > 0 {
+		s += ",enum=" + p.Enum
+	}
+	if p.HasDefault {
+		s += ",def=" + p.Default
+	}
+	return s
+}
+
+// Parse populates p by parsing a string in the protobuf struct field tag style.
+func (p *Properties) Parse(s string) {
+	// "bytes,49,opt,name=foo,def=hello!"
+	fields := strings.Split(s, ",") // breaks def=, but handled below.
+	if len(fields) < 2 {
+		fmt.Fprintf(os.Stderr, "proto: tag has too few fields: %q\n", s)
+		return
+	}
+
+	p.Wire = fields[0]
+	switch p.Wire {
+	case "varint":
+		p.WireType = WireVarint
+		p.valEnc = (*Buffer).EncodeVarint
+		p.valDec = (*Buffer).DecodeVarint
+		p.valSize = sizeVarint
+	case "fixed32":
+		p.WireType = WireFixed32
+		p.valEnc = (*Buffer).EncodeFixed32
+		p.valDec = (*Buffer).DecodeFixed32
+		p.valSize = sizeFixed32
+	case "fixed64":
+		p.WireType = WireFixed64
+		p.valEnc = (*Buffer).EncodeFixed64
+		p.valDec = (*Buffer).DecodeFixed64
+		p.valSize = sizeFixed64
+	case "zigzag32":
+		p.WireType = WireVarint
+		p.valEnc = (*Buffer).EncodeZigzag32
+		p.valDec = (*Buffer).DecodeZigzag32
+		p.valSize = sizeZigzag32
+	case "zigzag64":
+		p.WireType = WireVarint
+		p.valEnc = (*Buffer).EncodeZigzag64
+		p.valDec = (*Buffer).DecodeZigzag64
+		p.valSize = sizeZigzag64
+	case "bytes", "group":
+		p.WireType = WireBytes
+		// no numeric converter for non-numeric types
+	default:
+		fmt.Fprintf(os.Stderr, "proto: tag has unknown wire type: %q\n", s)
+		return
+	}
+
+	var err error
+	p.Tag, err = strconv.Atoi(fields[1])
+	if err != nil {
+		return
+	}
+
+	for i := 2; i < len(fields); i++ {
+		f := fields[i]
+		switch {
+		case f == "req":
+			p.Required = true
+		case f == "opt":
+			p.Optional = true
+		case f == "rep":
+			p.Repeated = true
+		case f == "packed":
+			p.Packed = true
+		case strings.HasPrefix(f, "name="):
+			p.OrigName = f[5:]
+		case strings.HasPrefix(f, "json="):
+			p.JSONName = f[5:]
+		case strings.HasPrefix(f, "enum="):
+			p.Enum = f[5:]
+		case f == "proto3":
+			p.proto3 = true
+		case f == "oneof":
+			p.oneof = true
+		case strings.HasPrefix(f, "def="):
+			p.HasDefault = true
+			p.Default = f[4:] // rest of string
+			if i+1 < len(fields) {
+				// Commas aren't escaped, and def is always last.
+				p.Default += "," + strings.Join(fields[i+1:], ",")
+				break
+			}
+		}
+	}
+}
+
+func logNoSliceEnc(t1, t2 reflect.Type) {
+	fmt.Fprintf(os.Stderr, "proto: no slice oenc for %T = []%T\n", t1, t2)
+}
+
+var protoMessageType = reflect.TypeOf((*Message)(nil)).Elem()
+
+// Initialize the fields for encoding and decoding.
+func (p *Properties) setEncAndDec(typ reflect.Type, f *reflect.StructField, lockGetProp bool) {
+	p.enc = nil
+	p.dec = nil
+	p.size = nil
+
+	switch t1 := typ; t1.Kind() {
+	default:
+		fmt.Fprintf(os.Stderr, "proto: no coders for %v\n", t1)
+
+	// proto3 scalar types
+
+	case reflect.Bool:
+		p.enc = (*Buffer).enc_proto3_bool
+		p.dec = (*Buffer).dec_proto3_bool
+		p.size = size_proto3_bool
+	case reflect.Int32:
+		p.enc = (*Buffer).enc_proto3_int32
+		p.dec = (*Buffer).dec_proto3_int32
+		p.size = size_proto3_int32
+	case reflect.Uint32:
+		p.enc = (*Buffer).enc_proto3_uint32
+		p.dec = (*Buffer).dec_proto3_int32 // can reuse
+		p.size = size_proto3_uint32
+	case reflect.Int64, reflect.Uint64:
+		p.enc = (*Buffer).enc_proto3_int64
+		p.dec = (*Buffer).dec_proto3_int64
+		p.size = size_proto3_int64
+	case reflect.Float32:
+		p.enc = (*Buffer).enc_proto3_uint32 // can just treat them as bits
+		p.dec = (*Buffer).dec_proto3_int32
+		p.size = size_proto3_uint32
+	case reflect.Float64:
+		p.enc = (*Buffer).enc_proto3_int64 // can just treat them as bits
+		p.dec = (*Buffer).dec_proto3_int64
+		p.size = size_proto3_int64
+	case reflect.String:
+		p.enc = (*Buffer).enc_proto3_string
+		p.dec = (*Buffer).dec_proto3_string
+		p.size = size_proto3_string
+
+	case reflect.Ptr:
+		switch t2 := t1.Elem(); t2.Kind() {
+		default:
+			fmt.Fprintf(os.Stderr, "proto: no encoder function for %v -> %v\n", t1, t2)
+			break
+		case reflect.Bool:
+			p.enc = (*Buffer).enc_bool
+			p.dec = (*Buffer).dec_bool
+			p.size = size_bool
+		case reflect.Int32:
+			p.enc = (*Buffer).enc_int32
+			p.dec = (*Buffer).dec_int32
+			p.size = size_int32
+		case reflect.Uint32:
+			p.enc = (*Buffer).enc_uint32
+			p.dec = (*Buffer).dec_int32 // can reuse
+			p.size = size_uint32
+		case reflect.Int64, reflect.Uint64:
+			p.enc = (*Buffer).enc_int64
+			p.dec = (*Buffer).dec_int64
+			p.size = size_int64
+		case reflect.Float32:
+			p.enc = (*Buffer).enc_uint32 // can just treat them as bits
+			p.dec = (*Buffer).dec_int32
+			p.size = size_uint32
+		case reflect.Float64:
+			p.enc = (*Buffer).enc_int64 // can just treat them as bits
+			p.dec = (*Buffer).dec_int64
+			p.size = size_int64
+		case reflect.String:
+			p.enc = (*Buffer).enc_string
+			p.dec = (*Buffer).dec_string
+			p.size = size_string
+		case reflect.Struct:
+			p.stype = t1.Elem()
+			p.isMarshaler = isMarshaler(t1)
+			p.isUnmarshaler = isUnmarshaler(t1)
+			if p.Wire == "bytes" {
+				p.enc = (*Buffer).enc_struct_message
+				p.dec = (*Buffer).dec_struct_message
+				p.size = size_struct_message
+			} else {
+				p.enc = (*Buffer).enc_struct_group
+				p.dec = (*Buffer).dec_struct_group
+				p.size = size_struct_group
+			}
+		}
+
+	case reflect.Slice:
+		switch t2 := t1.Elem(); t2.Kind() {
+		default:
+			logNoSliceEnc(t1, t2)
+			break
+		case reflect.Bool:
+			if p.Packed {
+				p.enc = (*Buffer).enc_slice_packed_bool
+				p.size = size_slice_packed_bool
+			} else {
+				p.enc = (*Buffer).enc_slice_bool
+				p.size = size_slice_bool
+			}
+			p.dec = (*Buffer).dec_slice_bool
+			p.packedDec = (*Buffer).dec_slice_packed_bool
+		case reflect.Int32:
+			if p.Packed {
+				p.enc = (*Buffer).enc_slice_packed_int32
+				p.size = size_slice_packed_int32
+			} else {
+				p.enc = (*Buffer).enc_slice_int32
+				p.size = size_slice_int32
+			}
+			p.dec = (*Buffer).dec_slice_int32
+			p.packedDec = (*Buffer).dec_slice_packed_int32
+		case reflect.Uint32:
+			if p.Packed {
+				p.enc = (*Buffer).enc_slice_packed_uint32
+				p.size = size_slice_packed_uint32
+			} else {
+				p.enc = (*Buffer).enc_slice_uint32
+				p.size = size_slice_uint32
+			}
+			p.dec = (*Buffer).dec_slice_int32
+			p.packedDec = (*Buffer).dec_slice_packed_int32
+		case reflect.Int64, reflect.Uint64:
+			if p.Packed {
+				p.enc = (*Buffer).enc_slice_packed_int64
+				p.size = size_slice_packed_int64
+			} else {
+				p.enc = (*Buffer).enc_slice_int64
+				p.size = size_slice_int64
+			}
+			p.dec = (*Buffer).dec_slice_int64
+			p.packedDec = (*Buffer).dec_slice_packed_int64
+		case reflect.Uint8:
+			p.dec = (*Buffer).dec_slice_byte
+			if p.proto3 {
+				p.enc = (*Buffer).enc_proto3_slice_byte
+				p.size = size_proto3_slice_byte
+			} else {
+				p.enc = (*Buffer).enc_slice_byte
+				p.size = size_slice_byte
+			}
+		case reflect.Float32, reflect.Float64:
+			switch t2.Bits() {
+			case 32:
+				// can just treat them as bits
+				if p.Packed {
+					p.enc = (*Buffer).enc_slice_packed_uint32
+					p.size = size_slice_packed_uint32
+				} else {
+					p.enc = (*Buffer).enc_slice_uint32
+					p.size = size_slice_uint32
+				}
+				p.dec = (*Buffer).dec_slice_int32
+				p.packedDec = (*Buffer).dec_slice_packed_int32
+			case 64:
+				// can just treat them as bits
+				if p.Packed {
+					p.enc = (*Buffer).enc_slice_packed_int64
+					p.size = size_slice_packed_int64
+				} else {
+					p.enc = (*Buffer).enc_slice_int64
+					p.size = size_slice_int64
+				}
+				p.dec = (*Buffer).dec_slice_int64
+				p.packedDec = (*Buffer).dec_slice_packed_int64
+			default:
+				logNoSliceEnc(t1, t2)
+				break
+			}
+		case reflect.String:
+			p.enc = (*Buffer).enc_slice_string
+			p.dec = (*Buffer).dec_slice_string
+			p.size = size_slice_string
+		case reflect.Ptr:
+			switch t3 := t2.Elem(); t3.Kind() {
+			default:
+				fmt.Fprintf(os.Stderr, "proto: no ptr oenc for %T -> %T -> %T\n", t1, t2, t3)
+				break
+			case reflect.Struct:
+				p.stype = t2.Elem()
+				p.isMarshaler = isMarshaler(t2)
+				p.isUnmarshaler = isUnmarshaler(t2)
+				if p.Wire == "bytes" {
+					p.enc = (*Buffer).enc_slice_struct_message
+					p.dec = (*Buffer).dec_slice_struct_message
+					p.size = size_slice_struct_message
+				} else {
+					p.enc = (*Buffer).enc_slice_struct_group
+					p.dec = (*Buffer).dec_slice_struct_group
+					p.size = size_slice_struct_group
+				}
+			}
+		case reflect.Slice:
+			switch t2.Elem().Kind() {
+			default:
+				fmt.Fprintf(os.Stderr, "proto: no slice elem oenc for %T -> %T -> %T\n", t1, t2, t2.Elem())
+				break
+			case reflect.Uint8:
+				p.enc = (*Buffer).enc_slice_slice_byte
+				p.dec = (*Buffer).dec_slice_slice_byte
+				p.size = size_slice_slice_byte
+			}
+		}
+
+	case reflect.Map:
+		p.enc = (*Buffer).enc_new_map
+		p.dec = (*Buffer).dec_new_map
+		p.size = size_new_map
+
+		p.mtype = t1
+		p.mkeyprop = &Properties{}
+		p.mkeyprop.init(reflect.PtrTo(p.mtype.Key()), "Key", f.Tag.Get("protobuf_key"), nil, lockGetProp)
+		p.mvalprop = &Properties{}
+		vtype := p.mtype.Elem()
+		if vtype.Kind() != reflect.Ptr && vtype.Kind() != reflect.Slice {
+			// The value type is not a message (*T) or bytes ([]byte),
+			// so we need encoders for the pointer to this type.
+			vtype = reflect.PtrTo(vtype)
+		}
+		p.mvalprop.init(vtype, "Value", f.Tag.Get("protobuf_val"), nil, lockGetProp)
+	}
+
+	// precalculate tag code
+	wire := p.WireType
+	if p.Packed {
+		wire = WireBytes
+	}
+	x := uint32(p.Tag)<<3 | uint32(wire)
+	i := 0
+	for i = 0; x > 127; i++ {
+		p.tagbuf[i] = 0x80 | uint8(x&0x7F)
+		x >>= 7
+	}
+	p.tagbuf[i] = uint8(x)
+	p.tagcode = p.tagbuf[0 : i+1]
+
+	if p.stype != nil {
+		if lockGetProp {
+			p.sprop = GetProperties(p.stype)
+		} else {
+			p.sprop = getPropertiesLocked(p.stype)
+		}
+	}
+}
+
+var (
+	marshalerType   = reflect.TypeOf((*Marshaler)(nil)).Elem()
+	unmarshalerType = reflect.TypeOf((*Unmarshaler)(nil)).Elem()
+)
+
+// isMarshaler reports whether type t implements Marshaler.
+func isMarshaler(t reflect.Type) bool {
+	// We're checking for (likely) pointer-receiver methods
+	// so if t is not a pointer, something is very wrong.
+	// The calls above only invoke isMarshaler on pointer types.
+	if t.Kind() != reflect.Ptr {
+		panic("proto: misuse of isMarshaler")
+	}
+	return t.Implements(marshalerType)
+}
+
+// isUnmarshaler reports whether type t implements Unmarshaler.
+func isUnmarshaler(t reflect.Type) bool {
+	// We're checking for (likely) pointer-receiver methods
+	// so if t is not a pointer, something is very wrong.
+	// The calls above only invoke isUnmarshaler on pointer types.
+	if t.Kind() != reflect.Ptr {
+		panic("proto: misuse of isUnmarshaler")
+	}
+	return t.Implements(unmarshalerType)
+}
+
+// Init populates the properties from a protocol buffer struct tag.
+func (p *Properties) Init(typ reflect.Type, name, tag string, f *reflect.StructField) {
+	p.init(typ, name, tag, f, true)
+}
+
+func (p *Properties) init(typ reflect.Type, name, tag string, f *reflect.StructField, lockGetProp bool) {
+	// "bytes,49,opt,def=hello!"
+	p.Name = name
+	p.OrigName = name
+	if f != nil {
+		p.field = toField(f)
+	}
+	if tag == "" {
+		return
+	}
+	p.Parse(tag)
+	p.setEncAndDec(typ, f, lockGetProp)
+}
+
+var (
+	propertiesMu  sync.RWMutex
+	propertiesMap = make(map[reflect.Type]*StructProperties)
+)
+
+// GetProperties returns the list of properties for the type represented by t.
+// t must represent a generated struct type of a protocol message.
+func GetProperties(t reflect.Type) *StructProperties {
+	if t.Kind() != reflect.Struct {
+		panic("proto: type must have kind struct")
+	}
+
+	// Most calls to GetProperties in a long-running program will be
+	// retrieving details for types we have seen before.
+	propertiesMu.RLock()
+	sprop, ok := propertiesMap[t]
+	propertiesMu.RUnlock()
+	if ok {
+		if collectStats {
+			stats.Chit++
+		}
+		return sprop
+	}
+
+	propertiesMu.Lock()
+	sprop = getPropertiesLocked(t)
+	propertiesMu.Unlock()
+	return sprop
+}
+
+// getPropertiesLocked requires that propertiesMu is held.
+func getPropertiesLocked(t reflect.Type) *StructProperties {
+	if prop, ok := propertiesMap[t]; ok {
+		if collectStats {
+			stats.Chit++
+		}
+		return prop
+	}
+	if collectStats {
+		stats.Cmiss++
+	}
+
+	prop := new(StructProperties)
+	// in case of recursive protos, fill this in now.
+	propertiesMap[t] = prop
+
+	// build properties
+	prop.extendable = reflect.PtrTo(t).Implements(extendableProtoType) ||
+		reflect.PtrTo(t).Implements(extendableProtoV1Type)
+	prop.unrecField = invalidField
+	prop.Prop = make([]*Properties, t.NumField())
+	prop.order = make([]int, t.NumField())
+
+	for i := 0; i < t.NumField(); i++ {
+		f := t.Field(i)
+		p := new(Properties)
+		name := f.Name
+		p.init(f.Type, name, f.Tag.Get("protobuf"), &f, false)
+
+		if f.Name == "XXX_InternalExtensions" { // special case
+			p.enc = (*Buffer).enc_exts
+			p.dec = nil // not needed
+			p.size = size_exts
+		} else if f.Name == "XXX_extensions" { // special case
+			p.enc = (*Buffer).enc_map
+			p.dec = nil // not needed
+			p.size = size_map
+		} else if f.Name == "XXX_unrecognized" { // special case
+			prop.unrecField = toField(&f)
+		}
+		oneof := f.Tag.Get("protobuf_oneof") // special case
+		if oneof != "" {
+			// Oneof fields don't use the traditional protobuf tag.
+			p.OrigName = oneof
+		}
+		prop.Prop[i] = p
+		prop.order[i] = i
+		if debug {
+			print(i, " ", f.Name, " ", t.String(), " ")
+			if p.Tag > 0 {
+				print(p.String())
+			}
+			print("\n")
+		}
+		if p.enc == nil && !strings.HasPrefix(f.Name, "XXX_") && oneof == "" {
+			fmt.Fprintln(os.Stderr, "proto: no encoder for", f.Name, f.Type.String(), "[GetProperties]")
+		}
+	}
+
+	// Re-order prop.order.
+	sort.Sort(prop)
+
+	type oneofMessage interface {
+		XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
+	}
+	if om, ok := reflect.Zero(reflect.PtrTo(t)).Interface().(oneofMessage); ok {
+		var oots []interface{}
+		prop.oneofMarshaler, prop.oneofUnmarshaler, prop.oneofSizer, oots = om.XXX_OneofFuncs()
+		prop.stype = t
+
+		// Interpret oneof metadata.
+		prop.OneofTypes = make(map[string]*OneofProperties)
+		for _, oot := range oots {
+			oop := &OneofProperties{
+				Type: reflect.ValueOf(oot).Type(), // *T
+				Prop: new(Properties),
+			}
+			sft := oop.Type.Elem().Field(0)
+			oop.Prop.Name = sft.Name
+			oop.Prop.Parse(sft.Tag.Get("protobuf"))
+			// There will be exactly one interface field that
+			// this new value is assignable to.
+			for i := 0; i < t.NumField(); i++ {
+				f := t.Field(i)
+				if f.Type.Kind() != reflect.Interface {
+					continue
+				}
+				if !oop.Type.AssignableTo(f.Type) {
+					continue
+				}
+				oop.Field = i
+				break
+			}
+			prop.OneofTypes[oop.Prop.OrigName] = oop
+		}
+	}
+
+	// build required counts
+	// build tags
+	reqCount := 0
+	prop.decoderOrigNames = make(map[string]int)
+	for i, p := range prop.Prop {
+		if strings.HasPrefix(p.Name, "XXX_") {
+			// Internal fields should not appear in tags/origNames maps.
+			// They are handled specially when encoding and decoding.
+			continue
+		}
+		if p.Required {
+			reqCount++
+		}
+		prop.decoderTags.put(p.Tag, i)
+		prop.decoderOrigNames[p.OrigName] = i
+	}
+	prop.reqCount = reqCount
+
+	return prop
+}
+
+// Return the Properties object for the x[0]'th field of the structure.
+func propByIndex(t reflect.Type, x []int) *Properties {
+	if len(x) != 1 {
+		fmt.Fprintf(os.Stderr, "proto: field index dimension %d (not 1) for type %s\n", len(x), t)
+		return nil
+	}
+	prop := GetProperties(t)
+	return prop.Prop[x[0]]
+}
+
+// Get the address and type of a pointer to a struct from an interface.
+func getbase(pb Message) (t reflect.Type, b structPointer, err error) {
+	if pb == nil {
+		err = ErrNil
+		return
+	}
+	// get the reflect type of the pointer to the struct.
+	t = reflect.TypeOf(pb)
+	// get the address of the struct.
+	value := reflect.ValueOf(pb)
+	b = toStructPointer(value)
+	return
+}
+
+// A global registry of enum types.
+// The generated code will register the generated maps by calling RegisterEnum.
+
+var enumValueMaps = make(map[string]map[string]int32)
+
+// RegisterEnum is called from the generated code to install the enum descriptor
+// maps into the global table to aid parsing text format protocol buffers.
+func RegisterEnum(typeName string, unusedNameMap map[int32]string, valueMap map[string]int32) {
+	if _, ok := enumValueMaps[typeName]; ok {
+		panic("proto: duplicate enum registered: " + typeName)
+	}
+	enumValueMaps[typeName] = valueMap
+}
+
+// EnumValueMap returns the mapping from names to integers of the
+// enum type enumType, or a nil if not found.
+func EnumValueMap(enumType string) map[string]int32 {
+	return enumValueMaps[enumType]
+}
+
+// A registry of all linked message types.
+// The string is a fully-qualified proto name ("pkg.Message").
+var (
+	protoTypes    = make(map[string]reflect.Type)
+	revProtoTypes = make(map[reflect.Type]string)
+)
+
+// RegisterType is called from generated code and maps from the fully qualified
+// proto name to the type (pointer to struct) of the protocol buffer.
+func RegisterType(x Message, name string) {
+	if _, ok := protoTypes[name]; ok {
+		// TODO: Some day, make this a panic.
+		log.Printf("proto: duplicate proto type registered: %s", name)
+		return
+	}
+	t := reflect.TypeOf(x)
+	protoTypes[name] = t
+	revProtoTypes[t] = name
+}
+
+// MessageName returns the fully-qualified proto name for the given message type.
+func MessageName(x Message) string {
+	type xname interface {
+		XXX_MessageName() string
+	}
+	if m, ok := x.(xname); ok {
+		return m.XXX_MessageName()
+	}
+	return revProtoTypes[reflect.TypeOf(x)]
+}
+
+// MessageType returns the message type (pointer to struct) for a named message.
+func MessageType(name string) reflect.Type { return protoTypes[name] }
+
+// A registry of all linked proto files.
+var (
+	protoFiles = make(map[string][]byte) // file name => fileDescriptor
+)
+
+// RegisterFile is called from generated code and maps from the
+// full file name of a .proto file to its compressed FileDescriptorProto.
+func RegisterFile(filename string, fileDescriptor []byte) {
+	protoFiles[filename] = fileDescriptor
+}
+
+// FileDescriptor returns the compressed FileDescriptorProto for a .proto file.
+func FileDescriptor(filename string) []byte { return protoFiles[filename] }
diff --git a/vendor/github.com/golang/protobuf/proto/proto3_proto/proto3.pb.go b/vendor/github.com/golang/protobuf/proto/proto3_proto/proto3.pb.go
new file mode 100644
index 000000000..cc4d0489f
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/proto3_proto/proto3.pb.go
@@ -0,0 +1,347 @@
+// Code generated by protoc-gen-go.
+// source: proto3_proto/proto3.proto
+// DO NOT EDIT!
+
+/*
+Package proto3_proto is a generated protocol buffer package.
+
+It is generated from these files:
+	proto3_proto/proto3.proto
+
+It has these top-level messages:
+	Message
+	Nested
+	MessageWithMap
+	IntMap
+	IntMaps
+*/
+package proto3_proto
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+import google_protobuf "github.com/golang/protobuf/ptypes/any"
+import testdata "github.com/golang/protobuf/proto/testdata"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+type Message_Humour int32
+
+const (
+	Message_UNKNOWN     Message_Humour = 0
+	Message_PUNS        Message_Humour = 1
+	Message_SLAPSTICK   Message_Humour = 2
+	Message_BILL_BAILEY Message_Humour = 3
+)
+
+var Message_Humour_name = map[int32]string{
+	0: "UNKNOWN",
+	1: "PUNS",
+	2: "SLAPSTICK",
+	3: "BILL_BAILEY",
+}
+var Message_Humour_value = map[string]int32{
+	"UNKNOWN":     0,
+	"PUNS":        1,
+	"SLAPSTICK":   2,
+	"BILL_BAILEY": 3,
+}
+
+func (x Message_Humour) String() string {
+	return proto.EnumName(Message_Humour_name, int32(x))
+}
+func (Message_Humour) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{0, 0} }
+
+type Message struct {
+	Name         string                           `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Hilarity     Message_Humour                   `protobuf:"varint,2,opt,name=hilarity,enum=proto3_proto.Message_Humour" json:"hilarity,omitempty"`
+	HeightInCm   uint32                           `protobuf:"varint,3,opt,name=height_in_cm,json=heightInCm" json:"height_in_cm,omitempty"`
+	Data         []byte                           `protobuf:"bytes,4,opt,name=data,proto3" json:"data,omitempty"`
+	ResultCount  int64                            `protobuf:"varint,7,opt,name=result_count,json=resultCount" json:"result_count,omitempty"`
+	TrueScotsman bool                             `protobuf:"varint,8,opt,name=true_scotsman,json=trueScotsman" json:"true_scotsman,omitempty"`
+	Score        float32                          `protobuf:"fixed32,9,opt,name=score" json:"score,omitempty"`
+	Key          []uint64                         `protobuf:"varint,5,rep,packed,name=key" json:"key,omitempty"`
+	ShortKey     []int32                          `protobuf:"varint,19,rep,packed,name=short_key,json=shortKey" json:"short_key,omitempty"`
+	Nested       *Nested                          `protobuf:"bytes,6,opt,name=nested" json:"nested,omitempty"`
+	RFunny       []Message_Humour                 `protobuf:"varint,16,rep,packed,name=r_funny,json=rFunny,enum=proto3_proto.Message_Humour" json:"r_funny,omitempty"`
+	Terrain      map[string]*Nested               `protobuf:"bytes,10,rep,name=terrain" json:"terrain,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	Proto2Field  *testdata.SubDefaults            `protobuf:"bytes,11,opt,name=proto2_field,json=proto2Field" json:"proto2_field,omitempty"`
+	Proto2Value  map[string]*testdata.SubDefaults `protobuf:"bytes,13,rep,name=proto2_value,json=proto2Value" json:"proto2_value,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	Anything     *google_protobuf.Any             `protobuf:"bytes,14,opt,name=anything" json:"anything,omitempty"`
+	ManyThings   []*google_protobuf.Any           `protobuf:"bytes,15,rep,name=many_things,json=manyThings" json:"many_things,omitempty"`
+	Submessage   *Message                         `protobuf:"bytes,17,opt,name=submessage" json:"submessage,omitempty"`
+	Children     []*Message                       `protobuf:"bytes,18,rep,name=children" json:"children,omitempty"`
+}
+
+func (m *Message) Reset()                    { *m = Message{} }
+func (m *Message) String() string            { return proto.CompactTextString(m) }
+func (*Message) ProtoMessage()               {}
+func (*Message) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+func (m *Message) GetName() string {
+	if m != nil {
+		return m.Name
+	}
+	return ""
+}
+
+func (m *Message) GetHilarity() Message_Humour {
+	if m != nil {
+		return m.Hilarity
+	}
+	return Message_UNKNOWN
+}
+
+func (m *Message) GetHeightInCm() uint32 {
+	if m != nil {
+		return m.HeightInCm
+	}
+	return 0
+}
+
+func (m *Message) GetData() []byte {
+	if m != nil {
+		return m.Data
+	}
+	return nil
+}
+
+func (m *Message) GetResultCount() int64 {
+	if m != nil {
+		return m.ResultCount
+	}
+	return 0
+}
+
+func (m *Message) GetTrueScotsman() bool {
+	if m != nil {
+		return m.TrueScotsman
+	}
+	return false
+}
+
+func (m *Message) GetScore() float32 {
+	if m != nil {
+		return m.Score
+	}
+	return 0
+}
+
+func (m *Message) GetKey() []uint64 {
+	if m != nil {
+		return m.Key
+	}
+	return nil
+}
+
+func (m *Message) GetShortKey() []int32 {
+	if m != nil {
+		return m.ShortKey
+	}
+	return nil
+}
+
+func (m *Message) GetNested() *Nested {
+	if m != nil {
+		return m.Nested
+	}
+	return nil
+}
+
+func (m *Message) GetRFunny() []Message_Humour {
+	if m != nil {
+		return m.RFunny
+	}
+	return nil
+}
+
+func (m *Message) GetTerrain() map[string]*Nested {
+	if m != nil {
+		return m.Terrain
+	}
+	return nil
+}
+
+func (m *Message) GetProto2Field() *testdata.SubDefaults {
+	if m != nil {
+		return m.Proto2Field
+	}
+	return nil
+}
+
+func (m *Message) GetProto2Value() map[string]*testdata.SubDefaults {
+	if m != nil {
+		return m.Proto2Value
+	}
+	return nil
+}
+
+func (m *Message) GetAnything() *google_protobuf.Any {
+	if m != nil {
+		return m.Anything
+	}
+	return nil
+}
+
+func (m *Message) GetManyThings() []*google_protobuf.Any {
+	if m != nil {
+		return m.ManyThings
+	}
+	return nil
+}
+
+func (m *Message) GetSubmessage() *Message {
+	if m != nil {
+		return m.Submessage
+	}
+	return nil
+}
+
+func (m *Message) GetChildren() []*Message {
+	if m != nil {
+		return m.Children
+	}
+	return nil
+}
+
+type Nested struct {
+	Bunny string `protobuf:"bytes,1,opt,name=bunny" json:"bunny,omitempty"`
+	Cute  bool   `protobuf:"varint,2,opt,name=cute" json:"cute,omitempty"`
+}
+
+func (m *Nested) Reset()                    { *m = Nested{} }
+func (m *Nested) String() string            { return proto.CompactTextString(m) }
+func (*Nested) ProtoMessage()               {}
+func (*Nested) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+func (m *Nested) GetBunny() string {
+	if m != nil {
+		return m.Bunny
+	}
+	return ""
+}
+
+func (m *Nested) GetCute() bool {
+	if m != nil {
+		return m.Cute
+	}
+	return false
+}
+
+type MessageWithMap struct {
+	ByteMapping map[bool][]byte `protobuf:"bytes,1,rep,name=byte_mapping,json=byteMapping" json:"byte_mapping,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value,proto3"`
+}
+
+func (m *MessageWithMap) Reset()                    { *m = MessageWithMap{} }
+func (m *MessageWithMap) String() string            { return proto.CompactTextString(m) }
+func (*MessageWithMap) ProtoMessage()               {}
+func (*MessageWithMap) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+
+func (m *MessageWithMap) GetByteMapping() map[bool][]byte {
+	if m != nil {
+		return m.ByteMapping
+	}
+	return nil
+}
+
+type IntMap struct {
+	Rtt map[int32]int32 `protobuf:"bytes,1,rep,name=rtt" json:"rtt,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+}
+
+func (m *IntMap) Reset()                    { *m = IntMap{} }
+func (m *IntMap) String() string            { return proto.CompactTextString(m) }
+func (*IntMap) ProtoMessage()               {}
+func (*IntMap) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
+
+func (m *IntMap) GetRtt() map[int32]int32 {
+	if m != nil {
+		return m.Rtt
+	}
+	return nil
+}
+
+type IntMaps struct {
+	Maps []*IntMap `protobuf:"bytes,1,rep,name=maps" json:"maps,omitempty"`
+}
+
+func (m *IntMaps) Reset()                    { *m = IntMaps{} }
+func (m *IntMaps) String() string            { return proto.CompactTextString(m) }
+func (*IntMaps) ProtoMessage()               {}
+func (*IntMaps) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
+
+func (m *IntMaps) GetMaps() []*IntMap {
+	if m != nil {
+		return m.Maps
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterType((*Message)(nil), "proto3_proto.Message")
+	proto.RegisterType((*Nested)(nil), "proto3_proto.Nested")
+	proto.RegisterType((*MessageWithMap)(nil), "proto3_proto.MessageWithMap")
+	proto.RegisterType((*IntMap)(nil), "proto3_proto.IntMap")
+	proto.RegisterType((*IntMaps)(nil), "proto3_proto.IntMaps")
+	proto.RegisterEnum("proto3_proto.Message_Humour", Message_Humour_name, Message_Humour_value)
+}
+
+func init() { proto.RegisterFile("proto3_proto/proto3.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
+	// 733 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x84, 0x53, 0x6d, 0x6f, 0xf3, 0x34,
+	0x14, 0x25, 0x4d, 0x5f, 0xd2, 0x9b, 0x74, 0x0b, 0x5e, 0x91, 0xbc, 0x02, 0x52, 0x28, 0x12, 0x8a,
+	0x78, 0x49, 0xa1, 0xd3, 0xd0, 0x84, 0x10, 0x68, 0x1b, 0x9b, 0xa8, 0xd6, 0x95, 0xca, 0xdd, 0x98,
+	0xf8, 0x14, 0xa5, 0xad, 0xdb, 0x46, 0x34, 0x4e, 0x49, 0x1c, 0xa4, 0xfc, 0x1d, 0xfe, 0x28, 0x8f,
+	0x6c, 0xa7, 0x5d, 0x36, 0x65, 0xcf, 0xf3, 0x29, 0xf6, 0xf1, 0xb9, 0xf7, 0x9c, 0x1c, 0x5f, 0xc3,
+	0xe9, 0x2e, 0x89, 0x79, 0x7c, 0xe6, 0xcb, 0xcf, 0x40, 0x6d, 0x3c, 0xf9, 0x41, 0x56, 0xf9, 0xa8,
+	0x77, 0xba, 0x8e, 0xe3, 0xf5, 0x96, 0x2a, 0xca, 0x3c, 0x5b, 0x0d, 0x02, 0x96, 0x2b, 0x62, 0xef,
+	0x84, 0xd3, 0x94, 0x2f, 0x03, 0x1e, 0x0c, 0xc4, 0x42, 0x81, 0xfd, 0xff, 0x5b, 0xd0, 0xba, 0xa7,
+	0x69, 0x1a, 0xac, 0x29, 0x42, 0x50, 0x67, 0x41, 0x44, 0xb1, 0xe6, 0x68, 0x6e, 0x9b, 0xc8, 0x35,
+	0xba, 0x00, 0x63, 0x13, 0x6e, 0x83, 0x24, 0xe4, 0x39, 0xae, 0x39, 0x9a, 0x7b, 0x34, 0xfc, 0xcc,
+	0x2b, 0x0b, 0x7a, 0x45, 0xb1, 0xf7, 0x7b, 0x16, 0xc5, 0x59, 0x42, 0x0e, 0x6c, 0xe4, 0x80, 0xb5,
+	0xa1, 0xe1, 0x7a, 0xc3, 0xfd, 0x90, 0xf9, 0x8b, 0x08, 0xeb, 0x8e, 0xe6, 0x76, 0x08, 0x28, 0x6c,
+	0xc4, 0xae, 0x23, 0xa1, 0x27, 0xec, 0xe0, 0xba, 0xa3, 0xb9, 0x16, 0x91, 0x6b, 0xf4, 0x05, 0x58,
+	0x09, 0x4d, 0xb3, 0x2d, 0xf7, 0x17, 0x71, 0xc6, 0x38, 0x6e, 0x39, 0x9a, 0xab, 0x13, 0x53, 0x61,
+	0xd7, 0x02, 0x42, 0x5f, 0x42, 0x87, 0x27, 0x19, 0xf5, 0xd3, 0x45, 0xcc, 0xd3, 0x28, 0x60, 0xd8,
+	0x70, 0x34, 0xd7, 0x20, 0x96, 0x00, 0x67, 0x05, 0x86, 0xba, 0xd0, 0x48, 0x17, 0x71, 0x42, 0x71,
+	0xdb, 0xd1, 0xdc, 0x1a, 0x51, 0x1b, 0x64, 0x83, 0xfe, 0x37, 0xcd, 0x71, 0xc3, 0xd1, 0xdd, 0x3a,
+	0x11, 0x4b, 0xf4, 0x29, 0xb4, 0xd3, 0x4d, 0x9c, 0x70, 0x5f, 0xe0, 0x27, 0x8e, 0xee, 0x36, 0x88,
+	0x21, 0x81, 0x3b, 0x9a, 0xa3, 0x6f, 0xa1, 0xc9, 0x68, 0xca, 0xe9, 0x12, 0x37, 0x1d, 0xcd, 0x35,
+	0x87, 0xdd, 0x97, 0xbf, 0x3e, 0x91, 0x67, 0xa4, 0xe0, 0xa0, 0x73, 0x68, 0x25, 0xfe, 0x2a, 0x63,
+	0x2c, 0xc7, 0xb6, 0xa3, 0x7f, 0x30, 0xa9, 0x66, 0x72, 0x2b, 0xb8, 0xe8, 0x67, 0x68, 0x71, 0x9a,
+	0x24, 0x41, 0xc8, 0x30, 0x38, 0xba, 0x6b, 0x0e, 0xfb, 0xd5, 0x65, 0x0f, 0x8a, 0x74, 0xc3, 0x78,
+	0x92, 0x93, 0x7d, 0x09, 0xba, 0x00, 0x75, 0xff, 0x43, 0x7f, 0x15, 0xd2, 0xed, 0x12, 0x9b, 0xd2,
+	0xe8, 0x27, 0xde, 0xfe, 0xae, 0xbd, 0x59, 0x36, 0xff, 0x8d, 0xae, 0x82, 0x6c, 0xcb, 0x53, 0x62,
+	0x2a, 0xea, 0xad, 0x60, 0xa2, 0xd1, 0xa1, 0xf2, 0xdf, 0x60, 0x9b, 0x51, 0xdc, 0x91, 0xe2, 0x5f,
+	0x55, 0x8b, 0x4f, 0x25, 0xf3, 0x4f, 0x41, 0x54, 0x06, 0x8a, 0x56, 0x12, 0x41, 0xdf, 0x83, 0x11,
+	0xb0, 0x9c, 0x6f, 0x42, 0xb6, 0xc6, 0x47, 0x45, 0x52, 0x6a, 0x0e, 0xbd, 0xfd, 0x1c, 0x7a, 0x97,
+	0x2c, 0x27, 0x07, 0x16, 0x3a, 0x07, 0x33, 0x0a, 0x58, 0xee, 0xcb, 0x5d, 0x8a, 0x8f, 0xa5, 0x76,
+	0x75, 0x11, 0x08, 0xe2, 0x83, 0xe4, 0xa1, 0x73, 0x80, 0x34, 0x9b, 0x47, 0xca, 0x14, 0xfe, 0xb8,
+	0xf8, 0xd7, 0x2a, 0xc7, 0xa4, 0x44, 0x44, 0x3f, 0x80, 0xb1, 0xd8, 0x84, 0xdb, 0x65, 0x42, 0x19,
+	0x46, 0x52, 0xea, 0x8d, 0xa2, 0x03, 0xad, 0x37, 0x05, 0xab, 0x1c, 0xf8, 0x7e, 0x72, 0xd4, 0xd3,
+	0x90, 0x93, 0xf3, 0x35, 0x34, 0x54, 0x70, 0xb5, 0xf7, 0xcc, 0x86, 0xa2, 0xfc, 0x54, 0xbb, 0xd0,
+	0x7a, 0x8f, 0x60, 0xbf, 0x4e, 0xb1, 0xa2, 0xeb, 0x37, 0x2f, 0xbb, 0xbe, 0x71, 0x91, 0xcf, 0x6d,
+	0xfb, 0xbf, 0x42, 0x53, 0x0d, 0x14, 0x32, 0xa1, 0xf5, 0x38, 0xb9, 0x9b, 0xfc, 0xf1, 0x34, 0xb1,
+	0x3f, 0x42, 0x06, 0xd4, 0xa7, 0x8f, 0x93, 0x99, 0xad, 0xa1, 0x0e, 0xb4, 0x67, 0xe3, 0xcb, 0xe9,
+	0xec, 0x61, 0x74, 0x7d, 0x67, 0xd7, 0xd0, 0x31, 0x98, 0x57, 0xa3, 0xf1, 0xd8, 0xbf, 0xba, 0x1c,
+	0x8d, 0x6f, 0xfe, 0xb2, 0xf5, 0xfe, 0x10, 0x9a, 0xca, 0xac, 0x78, 0x33, 0x73, 0x39, 0xbe, 0xca,
+	0x8f, 0xda, 0x88, 0x57, 0xba, 0xc8, 0xb8, 0x32, 0x64, 0x10, 0xb9, 0xee, 0xff, 0xa7, 0xc1, 0x51,
+	0x91, 0xd9, 0x53, 0xc8, 0x37, 0xf7, 0xc1, 0x0e, 0x4d, 0xc1, 0x9a, 0xe7, 0x9c, 0xfa, 0x51, 0xb0,
+	0xdb, 0x89, 0x39, 0xd0, 0x64, 0xce, 0xdf, 0x55, 0xe6, 0x5c, 0xd4, 0x78, 0x57, 0x39, 0xa7, 0xf7,
+	0x8a, 0x5f, 0x4c, 0xd5, 0xfc, 0x19, 0xe9, 0xfd, 0x02, 0xf6, 0x6b, 0x42, 0x39, 0x30, 0x43, 0x05,
+	0xd6, 0x2d, 0x07, 0x66, 0x95, 0x93, 0xf9, 0x07, 0x9a, 0x23, 0xc6, 0x85, 0xb7, 0x01, 0xe8, 0x09,
+	0xe7, 0x85, 0xa5, 0xcf, 0x5f, 0x5a, 0x52, 0x14, 0x8f, 0x70, 0xae, 0x2c, 0x08, 0x66, 0xef, 0x47,
+	0x30, 0xf6, 0x40, 0x59, 0xb2, 0x51, 0x21, 0xd9, 0x28, 0x4b, 0x9e, 0x41, 0x4b, 0xf5, 0x4b, 0x91,
+	0x0b, 0xf5, 0x28, 0xd8, 0xa5, 0x85, 0x68, 0xb7, 0x4a, 0x94, 0x48, 0xc6, 0xbc, 0xa9, 0x8e, 0xde,
+	0x05, 0x00, 0x00, 0xff, 0xff, 0x75, 0x38, 0xad, 0x84, 0xe4, 0x05, 0x00, 0x00,
+}
diff --git a/vendor/github.com/golang/protobuf/proto/proto3_proto/proto3.proto b/vendor/github.com/golang/protobuf/proto/proto3_proto/proto3.proto
new file mode 100644
index 000000000..204865571
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/proto3_proto/proto3.proto
@@ -0,0 +1,87 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2014 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto3";
+
+import "google/protobuf/any.proto";
+import "testdata/test.proto";
+
+package proto3_proto;
+
+message Message {
+  enum Humour {
+    UNKNOWN = 0;
+    PUNS = 1;
+    SLAPSTICK = 2;
+    BILL_BAILEY = 3;
+  }
+
+  string name = 1;
+  Humour hilarity = 2;
+  uint32 height_in_cm = 3;
+  bytes data = 4;
+  int64 result_count = 7;
+  bool true_scotsman = 8;
+  float score = 9;
+
+  repeated uint64 key = 5;
+  repeated int32 short_key = 19;
+  Nested nested = 6;
+  repeated Humour r_funny = 16;
+
+  map<string, Nested> terrain = 10;
+  testdata.SubDefaults proto2_field = 11;
+  map<string, testdata.SubDefaults> proto2_value = 13;
+
+  google.protobuf.Any anything = 14;
+  repeated google.protobuf.Any many_things = 15;
+
+  Message submessage = 17;
+  repeated Message children = 18;
+}
+
+message Nested {
+  string bunny = 1;
+  bool cute = 2;
+}
+
+message MessageWithMap {
+  map<bool, bytes> byte_mapping = 1;
+}
+
+
+message IntMap {
+  map<int32, int32> rtt = 1;
+}
+
+message IntMaps {
+  repeated IntMap maps = 1;
+}
diff --git a/vendor/github.com/golang/protobuf/proto/proto3_test.go b/vendor/github.com/golang/protobuf/proto/proto3_test.go
new file mode 100644
index 000000000..735837f2d
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/proto3_test.go
@@ -0,0 +1,135 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2014 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto_test
+
+import (
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+	pb "github.com/golang/protobuf/proto/proto3_proto"
+	tpb "github.com/golang/protobuf/proto/testdata"
+)
+
+func TestProto3ZeroValues(t *testing.T) {
+	tests := []struct {
+		desc string
+		m    proto.Message
+	}{
+		{"zero message", &pb.Message{}},
+		{"empty bytes field", &pb.Message{Data: []byte{}}},
+	}
+	for _, test := range tests {
+		b, err := proto.Marshal(test.m)
+		if err != nil {
+			t.Errorf("%s: proto.Marshal: %v", test.desc, err)
+			continue
+		}
+		if len(b) > 0 {
+			t.Errorf("%s: Encoding is non-empty: %q", test.desc, b)
+		}
+	}
+}
+
+func TestRoundTripProto3(t *testing.T) {
+	m := &pb.Message{
+		Name:         "David",          // (2 | 1<<3): 0x0a 0x05 "David"
+		Hilarity:     pb.Message_PUNS,  // (0 | 2<<3): 0x10 0x01
+		HeightInCm:   178,              // (0 | 3<<3): 0x18 0xb2 0x01
+		Data:         []byte("roboto"), // (2 | 4<<3): 0x20 0x06 "roboto"
+		ResultCount:  47,               // (0 | 7<<3): 0x38 0x2f
+		TrueScotsman: true,             // (0 | 8<<3): 0x40 0x01
+		Score:        8.1,              // (5 | 9<<3): 0x4d <8.1>
+
+		Key: []uint64{1, 0xdeadbeef},
+		Nested: &pb.Nested{
+			Bunny: "Monty",
+		},
+	}
+	t.Logf(" m: %v", m)
+
+	b, err := proto.Marshal(m)
+	if err != nil {
+		t.Fatalf("proto.Marshal: %v", err)
+	}
+	t.Logf(" b: %q", b)
+
+	m2 := new(pb.Message)
+	if err := proto.Unmarshal(b, m2); err != nil {
+		t.Fatalf("proto.Unmarshal: %v", err)
+	}
+	t.Logf("m2: %v", m2)
+
+	if !proto.Equal(m, m2) {
+		t.Errorf("proto.Equal returned false:\n m: %v\nm2: %v", m, m2)
+	}
+}
+
+func TestGettersForBasicTypesExist(t *testing.T) {
+	var m pb.Message
+	if got := m.GetNested().GetBunny(); got != "" {
+		t.Errorf("m.GetNested().GetBunny() = %q, want empty string", got)
+	}
+	if got := m.GetNested().GetCute(); got {
+		t.Errorf("m.GetNested().GetCute() = %t, want false", got)
+	}
+}
+
+func TestProto3SetDefaults(t *testing.T) {
+	in := &pb.Message{
+		Terrain: map[string]*pb.Nested{
+			"meadow": new(pb.Nested),
+		},
+		Proto2Field: new(tpb.SubDefaults),
+		Proto2Value: map[string]*tpb.SubDefaults{
+			"badlands": new(tpb.SubDefaults),
+		},
+	}
+
+	got := proto.Clone(in).(*pb.Message)
+	proto.SetDefaults(got)
+
+	// There are no defaults in proto3.  Everything should be the zero value, but
+	// we need to remember to set defaults for nested proto2 messages.
+	want := &pb.Message{
+		Terrain: map[string]*pb.Nested{
+			"meadow": new(pb.Nested),
+		},
+		Proto2Field: &tpb.SubDefaults{N: proto.Int64(7)},
+		Proto2Value: map[string]*tpb.SubDefaults{
+			"badlands": &tpb.SubDefaults{N: proto.Int64(7)},
+		},
+	}
+
+	if !proto.Equal(got, want) {
+		t.Errorf("with in = %v\nproto.SetDefaults(in) =>\ngot %v\nwant %v", in, got, want)
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/size2_test.go b/vendor/github.com/golang/protobuf/proto/size2_test.go
new file mode 100644
index 000000000..a2729c39a
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/size2_test.go
@@ -0,0 +1,63 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2012 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto
+
+import (
+	"testing"
+)
+
+// This is a separate file and package from size_test.go because that one uses
+// generated messages and thus may not be in package proto without having a circular
+// dependency, whereas this file tests unexported details of size.go.
+
+func TestVarintSize(t *testing.T) {
+	// Check the edge cases carefully.
+	testCases := []struct {
+		n    uint64
+		size int
+	}{
+		{0, 1},
+		{1, 1},
+		{127, 1},
+		{128, 2},
+		{16383, 2},
+		{16384, 3},
+		{1<<63 - 1, 9},
+		{1 << 63, 10},
+	}
+	for _, tc := range testCases {
+		size := sizeVarint(tc.n)
+		if size != tc.size {
+			t.Errorf("sizeVarint(%d) = %d, want %d", tc.n, size, tc.size)
+		}
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/size_test.go b/vendor/github.com/golang/protobuf/proto/size_test.go
new file mode 100644
index 000000000..af1034dc7
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/size_test.go
@@ -0,0 +1,164 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2012 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto_test
+
+import (
+	"log"
+	"strings"
+	"testing"
+
+	. "github.com/golang/protobuf/proto"
+	proto3pb "github.com/golang/protobuf/proto/proto3_proto"
+	pb "github.com/golang/protobuf/proto/testdata"
+)
+
+var messageWithExtension1 = &pb.MyMessage{Count: Int32(7)}
+
+// messageWithExtension2 is in equal_test.go.
+var messageWithExtension3 = &pb.MyMessage{Count: Int32(8)}
+
+func init() {
+	if err := SetExtension(messageWithExtension1, pb.E_Ext_More, &pb.Ext{Data: String("Abbott")}); err != nil {
+		log.Panicf("SetExtension: %v", err)
+	}
+	if err := SetExtension(messageWithExtension3, pb.E_Ext_More, &pb.Ext{Data: String("Costello")}); err != nil {
+		log.Panicf("SetExtension: %v", err)
+	}
+
+	// Force messageWithExtension3 to have the extension encoded.
+	Marshal(messageWithExtension3)
+
+}
+
+var SizeTests = []struct {
+	desc string
+	pb   Message
+}{
+	{"empty", &pb.OtherMessage{}},
+	// Basic types.
+	{"bool", &pb.Defaults{F_Bool: Bool(true)}},
+	{"int32", &pb.Defaults{F_Int32: Int32(12)}},
+	{"negative int32", &pb.Defaults{F_Int32: Int32(-1)}},
+	{"small int64", &pb.Defaults{F_Int64: Int64(1)}},
+	{"big int64", &pb.Defaults{F_Int64: Int64(1 << 20)}},
+	{"negative int64", &pb.Defaults{F_Int64: Int64(-1)}},
+	{"fixed32", &pb.Defaults{F_Fixed32: Uint32(71)}},
+	{"fixed64", &pb.Defaults{F_Fixed64: Uint64(72)}},
+	{"uint32", &pb.Defaults{F_Uint32: Uint32(123)}},
+	{"uint64", &pb.Defaults{F_Uint64: Uint64(124)}},
+	{"float", &pb.Defaults{F_Float: Float32(12.6)}},
+	{"double", &pb.Defaults{F_Double: Float64(13.9)}},
+	{"string", &pb.Defaults{F_String: String("niles")}},
+	{"bytes", &pb.Defaults{F_Bytes: []byte("wowsa")}},
+	{"bytes, empty", &pb.Defaults{F_Bytes: []byte{}}},
+	{"sint32", &pb.Defaults{F_Sint32: Int32(65)}},
+	{"sint64", &pb.Defaults{F_Sint64: Int64(67)}},
+	{"enum", &pb.Defaults{F_Enum: pb.Defaults_BLUE.Enum()}},
+	// Repeated.
+	{"empty repeated bool", &pb.MoreRepeated{Bools: []bool{}}},
+	{"repeated bool", &pb.MoreRepeated{Bools: []bool{false, true, true, false}}},
+	{"packed repeated bool", &pb.MoreRepeated{BoolsPacked: []bool{false, true, true, false, true, true, true}}},
+	{"repeated int32", &pb.MoreRepeated{Ints: []int32{1, 12203, 1729, -1}}},
+	{"repeated int32 packed", &pb.MoreRepeated{IntsPacked: []int32{1, 12203, 1729}}},
+	{"repeated int64 packed", &pb.MoreRepeated{Int64SPacked: []int64{
+		// Need enough large numbers to verify that the header is counting the number of bytes
+		// for the field, not the number of elements.
+		1 << 62, 1 << 62, 1 << 62, 1 << 62, 1 << 62, 1 << 62, 1 << 62, 1 << 62, 1 << 62, 1 << 62,
+		1 << 62, 1 << 62, 1 << 62, 1 << 62, 1 << 62, 1 << 62, 1 << 62, 1 << 62, 1 << 62, 1 << 62,
+	}}},
+	{"repeated string", &pb.MoreRepeated{Strings: []string{"r", "ken", "gri"}}},
+	{"repeated fixed", &pb.MoreRepeated{Fixeds: []uint32{1, 2, 3, 4}}},
+	// Nested.
+	{"nested", &pb.OldMessage{Nested: &pb.OldMessage_Nested{Name: String("whatever")}}},
+	{"group", &pb.GroupOld{G: &pb.GroupOld_G{X: Int32(12345)}}},
+	// Other things.
+	{"unrecognized", &pb.MoreRepeated{XXX_unrecognized: []byte{13<<3 | 0, 4}}},
+	{"extension (unencoded)", messageWithExtension1},
+	{"extension (encoded)", messageWithExtension3},
+	// proto3 message
+	{"proto3 empty", &proto3pb.Message{}},
+	{"proto3 bool", &proto3pb.Message{TrueScotsman: true}},
+	{"proto3 int64", &proto3pb.Message{ResultCount: 1}},
+	{"proto3 uint32", &proto3pb.Message{HeightInCm: 123}},
+	{"proto3 float", &proto3pb.Message{Score: 12.6}},
+	{"proto3 string", &proto3pb.Message{Name: "Snezana"}},
+	{"proto3 bytes", &proto3pb.Message{Data: []byte("wowsa")}},
+	{"proto3 bytes, empty", &proto3pb.Message{Data: []byte{}}},
+	{"proto3 enum", &proto3pb.Message{Hilarity: proto3pb.Message_PUNS}},
+	{"proto3 map field with empty bytes", &proto3pb.MessageWithMap{ByteMapping: map[bool][]byte{false: []byte{}}}},
+
+	{"map field", &pb.MessageWithMap{NameMapping: map[int32]string{1: "Rob", 7: "Andrew"}}},
+	{"map field with message", &pb.MessageWithMap{MsgMapping: map[int64]*pb.FloatingPoint{0x7001: &pb.FloatingPoint{F: Float64(2.0)}}}},
+	{"map field with bytes", &pb.MessageWithMap{ByteMapping: map[bool][]byte{true: []byte("this time for sure")}}},
+	{"map field with empty bytes", &pb.MessageWithMap{ByteMapping: map[bool][]byte{true: []byte{}}}},
+
+	{"map field with big entry", &pb.MessageWithMap{NameMapping: map[int32]string{8: strings.Repeat("x", 125)}}},
+	{"map field with big key and val", &pb.MessageWithMap{StrToStr: map[string]string{strings.Repeat("x", 70): strings.Repeat("y", 70)}}},
+	{"map field with big numeric key", &pb.MessageWithMap{NameMapping: map[int32]string{0xf00d: "om nom nom"}}},
+
+	{"oneof not set", &pb.Oneof{}},
+	{"oneof bool", &pb.Oneof{Union: &pb.Oneof_F_Bool{true}}},
+	{"oneof zero int32", &pb.Oneof{Union: &pb.Oneof_F_Int32{0}}},
+	{"oneof big int32", &pb.Oneof{Union: &pb.Oneof_F_Int32{1 << 20}}},
+	{"oneof int64", &pb.Oneof{Union: &pb.Oneof_F_Int64{42}}},
+	{"oneof fixed32", &pb.Oneof{Union: &pb.Oneof_F_Fixed32{43}}},
+	{"oneof fixed64", &pb.Oneof{Union: &pb.Oneof_F_Fixed64{44}}},
+	{"oneof uint32", &pb.Oneof{Union: &pb.Oneof_F_Uint32{45}}},
+	{"oneof uint64", &pb.Oneof{Union: &pb.Oneof_F_Uint64{46}}},
+	{"oneof float", &pb.Oneof{Union: &pb.Oneof_F_Float{47.1}}},
+	{"oneof double", &pb.Oneof{Union: &pb.Oneof_F_Double{48.9}}},
+	{"oneof string", &pb.Oneof{Union: &pb.Oneof_F_String{"Rhythmic Fman"}}},
+	{"oneof bytes", &pb.Oneof{Union: &pb.Oneof_F_Bytes{[]byte("let go")}}},
+	{"oneof sint32", &pb.Oneof{Union: &pb.Oneof_F_Sint32{50}}},
+	{"oneof sint64", &pb.Oneof{Union: &pb.Oneof_F_Sint64{51}}},
+	{"oneof enum", &pb.Oneof{Union: &pb.Oneof_F_Enum{pb.MyMessage_BLUE}}},
+	{"message for oneof", &pb.GoTestField{Label: String("k"), Type: String("v")}},
+	{"oneof message", &pb.Oneof{Union: &pb.Oneof_F_Message{&pb.GoTestField{Label: String("k"), Type: String("v")}}}},
+	{"oneof group", &pb.Oneof{Union: &pb.Oneof_FGroup{&pb.Oneof_F_Group{X: Int32(52)}}}},
+	{"oneof largest tag", &pb.Oneof{Union: &pb.Oneof_F_Largest_Tag{1}}},
+	{"multiple oneofs", &pb.Oneof{Union: &pb.Oneof_F_Int32{1}, Tormato: &pb.Oneof_Value{2}}},
+}
+
+func TestSize(t *testing.T) {
+	for _, tc := range SizeTests {
+		size := Size(tc.pb)
+		b, err := Marshal(tc.pb)
+		if err != nil {
+			t.Errorf("%v: Marshal failed: %v", tc.desc, err)
+			continue
+		}
+		if size != len(b) {
+			t.Errorf("%v: Size(%v) = %d, want %d", tc.desc, tc.pb, size, len(b))
+			t.Logf("%v: bytes: %#v", tc.desc, b)
+		}
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/testdata/Makefile b/vendor/github.com/golang/protobuf/proto/testdata/Makefile
new file mode 100644
index 000000000..fc288628a
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/testdata/Makefile
@@ -0,0 +1,50 @@
+# Go support for Protocol Buffers - Google's data interchange format
+#
+# Copyright 2010 The Go Authors.  All rights reserved.
+# https://github.com/golang/protobuf
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+include ../../Make.protobuf
+
+all:	regenerate
+
+regenerate:
+	rm -f test.pb.go
+	make test.pb.go
+
+# The following rules are just aids to development. Not needed for typical testing.
+
+diff:	regenerate
+	git diff test.pb.go
+
+restore:
+	cp test.pb.go.golden test.pb.go
+
+preserve:
+	cp test.pb.go test.pb.go.golden
diff --git a/vendor/github.com/golang/protobuf/proto/testdata/golden_test.go b/vendor/github.com/golang/protobuf/proto/testdata/golden_test.go
new file mode 100644
index 000000000..7172d0e96
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/testdata/golden_test.go
@@ -0,0 +1,86 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2012 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Verify that the compiler output for test.proto is unchanged.
+
+package testdata
+
+import (
+	"crypto/sha1"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+)
+
+// sum returns in string form (for easy comparison) the SHA-1 hash of the named file.
+func sum(t *testing.T, name string) string {
+	data, err := ioutil.ReadFile(name)
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Logf("sum(%q): length is %d", name, len(data))
+	hash := sha1.New()
+	_, err = hash.Write(data)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return fmt.Sprintf("% x", hash.Sum(nil))
+}
+
+func run(t *testing.T, name string, args ...string) {
+	cmd := exec.Command(name, args...)
+	cmd.Stdin = os.Stdin
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	err := cmd.Run()
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestGolden(t *testing.T) {
+	// Compute the original checksum.
+	goldenSum := sum(t, "test.pb.go")
+	// Run the proto compiler.
+	run(t, "protoc", "--go_out="+os.TempDir(), "test.proto")
+	newFile := filepath.Join(os.TempDir(), "test.pb.go")
+	defer os.Remove(newFile)
+	// Compute the new checksum.
+	newSum := sum(t, newFile)
+	// Verify
+	if newSum != goldenSum {
+		run(t, "diff", "-u", "test.pb.go", newFile)
+		t.Fatal("Code generated by protoc-gen-go has changed; update test.pb.go")
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/proto/testdata/test.pb.go b/vendor/github.com/golang/protobuf/proto/testdata/test.pb.go
new file mode 100644
index 000000000..25ffd7a08
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/testdata/test.pb.go
@@ -0,0 +1,4148 @@
+// Code generated by protoc-gen-go.
+// source: test.proto
+// DO NOT EDIT!
+
+/*
+Package testdata is a generated protocol buffer package.
+
+It is generated from these files:
+	test.proto
+
+It has these top-level messages:
+	GoEnum
+	GoTestField
+	GoTest
+	GoTestRequiredGroupField
+	GoSkipTest
+	NonPackedTest
+	PackedTest
+	MaxTag
+	OldMessage
+	NewMessage
+	InnerMessage
+	OtherMessage
+	RequiredInnerMessage
+	MyMessage
+	Ext
+	ComplexExtension
+	DefaultsMessage
+	MyMessageSet
+	Empty
+	MessageList
+	Strings
+	Defaults
+	SubDefaults
+	RepeatedEnum
+	MoreRepeated
+	GroupOld
+	GroupNew
+	FloatingPoint
+	MessageWithMap
+	Oneof
+	Communique
+*/
+package testdata
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+type FOO int32
+
+const (
+	FOO_FOO1 FOO = 1
+)
+
+var FOO_name = map[int32]string{
+	1: "FOO1",
+}
+var FOO_value = map[string]int32{
+	"FOO1": 1,
+}
+
+func (x FOO) Enum() *FOO {
+	p := new(FOO)
+	*p = x
+	return p
+}
+func (x FOO) String() string {
+	return proto.EnumName(FOO_name, int32(x))
+}
+func (x *FOO) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(FOO_value, data, "FOO")
+	if err != nil {
+		return err
+	}
+	*x = FOO(value)
+	return nil
+}
+func (FOO) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+// An enum, for completeness.
+type GoTest_KIND int32
+
+const (
+	GoTest_VOID GoTest_KIND = 0
+	// Basic types
+	GoTest_BOOL        GoTest_KIND = 1
+	GoTest_BYTES       GoTest_KIND = 2
+	GoTest_FINGERPRINT GoTest_KIND = 3
+	GoTest_FLOAT       GoTest_KIND = 4
+	GoTest_INT         GoTest_KIND = 5
+	GoTest_STRING      GoTest_KIND = 6
+	GoTest_TIME        GoTest_KIND = 7
+	// Groupings
+	GoTest_TUPLE GoTest_KIND = 8
+	GoTest_ARRAY GoTest_KIND = 9
+	GoTest_MAP   GoTest_KIND = 10
+	// Table types
+	GoTest_TABLE GoTest_KIND = 11
+	// Functions
+	GoTest_FUNCTION GoTest_KIND = 12
+)
+
+var GoTest_KIND_name = map[int32]string{
+	0:  "VOID",
+	1:  "BOOL",
+	2:  "BYTES",
+	3:  "FINGERPRINT",
+	4:  "FLOAT",
+	5:  "INT",
+	6:  "STRING",
+	7:  "TIME",
+	8:  "TUPLE",
+	9:  "ARRAY",
+	10: "MAP",
+	11: "TABLE",
+	12: "FUNCTION",
+}
+var GoTest_KIND_value = map[string]int32{
+	"VOID":        0,
+	"BOOL":        1,
+	"BYTES":       2,
+	"FINGERPRINT": 3,
+	"FLOAT":       4,
+	"INT":         5,
+	"STRING":      6,
+	"TIME":        7,
+	"TUPLE":       8,
+	"ARRAY":       9,
+	"MAP":         10,
+	"TABLE":       11,
+	"FUNCTION":    12,
+}
+
+func (x GoTest_KIND) Enum() *GoTest_KIND {
+	p := new(GoTest_KIND)
+	*p = x
+	return p
+}
+func (x GoTest_KIND) String() string {
+	return proto.EnumName(GoTest_KIND_name, int32(x))
+}
+func (x *GoTest_KIND) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(GoTest_KIND_value, data, "GoTest_KIND")
+	if err != nil {
+		return err
+	}
+	*x = GoTest_KIND(value)
+	return nil
+}
+func (GoTest_KIND) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{2, 0} }
+
+type MyMessage_Color int32
+
+const (
+	MyMessage_RED   MyMessage_Color = 0
+	MyMessage_GREEN MyMessage_Color = 1
+	MyMessage_BLUE  MyMessage_Color = 2
+)
+
+var MyMessage_Color_name = map[int32]string{
+	0: "RED",
+	1: "GREEN",
+	2: "BLUE",
+}
+var MyMessage_Color_value = map[string]int32{
+	"RED":   0,
+	"GREEN": 1,
+	"BLUE":  2,
+}
+
+func (x MyMessage_Color) Enum() *MyMessage_Color {
+	p := new(MyMessage_Color)
+	*p = x
+	return p
+}
+func (x MyMessage_Color) String() string {
+	return proto.EnumName(MyMessage_Color_name, int32(x))
+}
+func (x *MyMessage_Color) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(MyMessage_Color_value, data, "MyMessage_Color")
+	if err != nil {
+		return err
+	}
+	*x = MyMessage_Color(value)
+	return nil
+}
+func (MyMessage_Color) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{13, 0} }
+
+type DefaultsMessage_DefaultsEnum int32
+
+const (
+	DefaultsMessage_ZERO DefaultsMessage_DefaultsEnum = 0
+	DefaultsMessage_ONE  DefaultsMessage_DefaultsEnum = 1
+	DefaultsMessage_TWO  DefaultsMessage_DefaultsEnum = 2
+)
+
+var DefaultsMessage_DefaultsEnum_name = map[int32]string{
+	0: "ZERO",
+	1: "ONE",
+	2: "TWO",
+}
+var DefaultsMessage_DefaultsEnum_value = map[string]int32{
+	"ZERO": 0,
+	"ONE":  1,
+	"TWO":  2,
+}
+
+func (x DefaultsMessage_DefaultsEnum) Enum() *DefaultsMessage_DefaultsEnum {
+	p := new(DefaultsMessage_DefaultsEnum)
+	*p = x
+	return p
+}
+func (x DefaultsMessage_DefaultsEnum) String() string {
+	return proto.EnumName(DefaultsMessage_DefaultsEnum_name, int32(x))
+}
+func (x *DefaultsMessage_DefaultsEnum) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(DefaultsMessage_DefaultsEnum_value, data, "DefaultsMessage_DefaultsEnum")
+	if err != nil {
+		return err
+	}
+	*x = DefaultsMessage_DefaultsEnum(value)
+	return nil
+}
+func (DefaultsMessage_DefaultsEnum) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor0, []int{16, 0}
+}
+
+type Defaults_Color int32
+
+const (
+	Defaults_RED   Defaults_Color = 0
+	Defaults_GREEN Defaults_Color = 1
+	Defaults_BLUE  Defaults_Color = 2
+)
+
+var Defaults_Color_name = map[int32]string{
+	0: "RED",
+	1: "GREEN",
+	2: "BLUE",
+}
+var Defaults_Color_value = map[string]int32{
+	"RED":   0,
+	"GREEN": 1,
+	"BLUE":  2,
+}
+
+func (x Defaults_Color) Enum() *Defaults_Color {
+	p := new(Defaults_Color)
+	*p = x
+	return p
+}
+func (x Defaults_Color) String() string {
+	return proto.EnumName(Defaults_Color_name, int32(x))
+}
+func (x *Defaults_Color) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(Defaults_Color_value, data, "Defaults_Color")
+	if err != nil {
+		return err
+	}
+	*x = Defaults_Color(value)
+	return nil
+}
+func (Defaults_Color) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{21, 0} }
+
+type RepeatedEnum_Color int32
+
+const (
+	RepeatedEnum_RED RepeatedEnum_Color = 1
+)
+
+var RepeatedEnum_Color_name = map[int32]string{
+	1: "RED",
+}
+var RepeatedEnum_Color_value = map[string]int32{
+	"RED": 1,
+}
+
+func (x RepeatedEnum_Color) Enum() *RepeatedEnum_Color {
+	p := new(RepeatedEnum_Color)
+	*p = x
+	return p
+}
+func (x RepeatedEnum_Color) String() string {
+	return proto.EnumName(RepeatedEnum_Color_name, int32(x))
+}
+func (x *RepeatedEnum_Color) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(RepeatedEnum_Color_value, data, "RepeatedEnum_Color")
+	if err != nil {
+		return err
+	}
+	*x = RepeatedEnum_Color(value)
+	return nil
+}
+func (RepeatedEnum_Color) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{23, 0} }
+
+type GoEnum struct {
+	Foo              *FOO   `protobuf:"varint,1,req,name=foo,enum=testdata.FOO" json:"foo,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *GoEnum) Reset()                    { *m = GoEnum{} }
+func (m *GoEnum) String() string            { return proto.CompactTextString(m) }
+func (*GoEnum) ProtoMessage()               {}
+func (*GoEnum) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+func (m *GoEnum) GetFoo() FOO {
+	if m != nil && m.Foo != nil {
+		return *m.Foo
+	}
+	return FOO_FOO1
+}
+
+type GoTestField struct {
+	Label            *string `protobuf:"bytes,1,req,name=Label" json:"Label,omitempty"`
+	Type             *string `protobuf:"bytes,2,req,name=Type" json:"Type,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *GoTestField) Reset()                    { *m = GoTestField{} }
+func (m *GoTestField) String() string            { return proto.CompactTextString(m) }
+func (*GoTestField) ProtoMessage()               {}
+func (*GoTestField) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+func (m *GoTestField) GetLabel() string {
+	if m != nil && m.Label != nil {
+		return *m.Label
+	}
+	return ""
+}
+
+func (m *GoTestField) GetType() string {
+	if m != nil && m.Type != nil {
+		return *m.Type
+	}
+	return ""
+}
+
+type GoTest struct {
+	// Some typical parameters
+	Kind  *GoTest_KIND `protobuf:"varint,1,req,name=Kind,enum=testdata.GoTest_KIND" json:"Kind,omitempty"`
+	Table *string      `protobuf:"bytes,2,opt,name=Table" json:"Table,omitempty"`
+	Param *int32       `protobuf:"varint,3,opt,name=Param" json:"Param,omitempty"`
+	// Required, repeated and optional foreign fields.
+	RequiredField *GoTestField   `protobuf:"bytes,4,req,name=RequiredField" json:"RequiredField,omitempty"`
+	RepeatedField []*GoTestField `protobuf:"bytes,5,rep,name=RepeatedField" json:"RepeatedField,omitempty"`
+	OptionalField *GoTestField   `protobuf:"bytes,6,opt,name=OptionalField" json:"OptionalField,omitempty"`
+	// Required fields of all basic types
+	F_BoolRequired    *bool    `protobuf:"varint,10,req,name=F_Bool_required,json=FBoolRequired" json:"F_Bool_required,omitempty"`
+	F_Int32Required   *int32   `protobuf:"varint,11,req,name=F_Int32_required,json=FInt32Required" json:"F_Int32_required,omitempty"`
+	F_Int64Required   *int64   `protobuf:"varint,12,req,name=F_Int64_required,json=FInt64Required" json:"F_Int64_required,omitempty"`
+	F_Fixed32Required *uint32  `protobuf:"fixed32,13,req,name=F_Fixed32_required,json=FFixed32Required" json:"F_Fixed32_required,omitempty"`
+	F_Fixed64Required *uint64  `protobuf:"fixed64,14,req,name=F_Fixed64_required,json=FFixed64Required" json:"F_Fixed64_required,omitempty"`
+	F_Uint32Required  *uint32  `protobuf:"varint,15,req,name=F_Uint32_required,json=FUint32Required" json:"F_Uint32_required,omitempty"`
+	F_Uint64Required  *uint64  `protobuf:"varint,16,req,name=F_Uint64_required,json=FUint64Required" json:"F_Uint64_required,omitempty"`
+	F_FloatRequired   *float32 `protobuf:"fixed32,17,req,name=F_Float_required,json=FFloatRequired" json:"F_Float_required,omitempty"`
+	F_DoubleRequired  *float64 `protobuf:"fixed64,18,req,name=F_Double_required,json=FDoubleRequired" json:"F_Double_required,omitempty"`
+	F_StringRequired  *string  `protobuf:"bytes,19,req,name=F_String_required,json=FStringRequired" json:"F_String_required,omitempty"`
+	F_BytesRequired   []byte   `protobuf:"bytes,101,req,name=F_Bytes_required,json=FBytesRequired" json:"F_Bytes_required,omitempty"`
+	F_Sint32Required  *int32   `protobuf:"zigzag32,102,req,name=F_Sint32_required,json=FSint32Required" json:"F_Sint32_required,omitempty"`
+	F_Sint64Required  *int64   `protobuf:"zigzag64,103,req,name=F_Sint64_required,json=FSint64Required" json:"F_Sint64_required,omitempty"`
+	// Repeated fields of all basic types
+	F_BoolRepeated    []bool    `protobuf:"varint,20,rep,name=F_Bool_repeated,json=FBoolRepeated" json:"F_Bool_repeated,omitempty"`
+	F_Int32Repeated   []int32   `protobuf:"varint,21,rep,name=F_Int32_repeated,json=FInt32Repeated" json:"F_Int32_repeated,omitempty"`
+	F_Int64Repeated   []int64   `protobuf:"varint,22,rep,name=F_Int64_repeated,json=FInt64Repeated" json:"F_Int64_repeated,omitempty"`
+	F_Fixed32Repeated []uint32  `protobuf:"fixed32,23,rep,name=F_Fixed32_repeated,json=FFixed32Repeated" json:"F_Fixed32_repeated,omitempty"`
+	F_Fixed64Repeated []uint64  `protobuf:"fixed64,24,rep,name=F_Fixed64_repeated,json=FFixed64Repeated" json:"F_Fixed64_repeated,omitempty"`
+	F_Uint32Repeated  []uint32  `protobuf:"varint,25,rep,name=F_Uint32_repeated,json=FUint32Repeated" json:"F_Uint32_repeated,omitempty"`
+	F_Uint64Repeated  []uint64  `protobuf:"varint,26,rep,name=F_Uint64_repeated,json=FUint64Repeated" json:"F_Uint64_repeated,omitempty"`
+	F_FloatRepeated   []float32 `protobuf:"fixed32,27,rep,name=F_Float_repeated,json=FFloatRepeated" json:"F_Float_repeated,omitempty"`
+	F_DoubleRepeated  []float64 `protobuf:"fixed64,28,rep,name=F_Double_repeated,json=FDoubleRepeated" json:"F_Double_repeated,omitempty"`
+	F_StringRepeated  []string  `protobuf:"bytes,29,rep,name=F_String_repeated,json=FStringRepeated" json:"F_String_repeated,omitempty"`
+	F_BytesRepeated   [][]byte  `protobuf:"bytes,201,rep,name=F_Bytes_repeated,json=FBytesRepeated" json:"F_Bytes_repeated,omitempty"`
+	F_Sint32Repeated  []int32   `protobuf:"zigzag32,202,rep,name=F_Sint32_repeated,json=FSint32Repeated" json:"F_Sint32_repeated,omitempty"`
+	F_Sint64Repeated  []int64   `protobuf:"zigzag64,203,rep,name=F_Sint64_repeated,json=FSint64Repeated" json:"F_Sint64_repeated,omitempty"`
+	// Optional fields of all basic types
+	F_BoolOptional    *bool    `protobuf:"varint,30,opt,name=F_Bool_optional,json=FBoolOptional" json:"F_Bool_optional,omitempty"`
+	F_Int32Optional   *int32   `protobuf:"varint,31,opt,name=F_Int32_optional,json=FInt32Optional" json:"F_Int32_optional,omitempty"`
+	F_Int64Optional   *int64   `protobuf:"varint,32,opt,name=F_Int64_optional,json=FInt64Optional" json:"F_Int64_optional,omitempty"`
+	F_Fixed32Optional *uint32  `protobuf:"fixed32,33,opt,name=F_Fixed32_optional,json=FFixed32Optional" json:"F_Fixed32_optional,omitempty"`
+	F_Fixed64Optional *uint64  `protobuf:"fixed64,34,opt,name=F_Fixed64_optional,json=FFixed64Optional" json:"F_Fixed64_optional,omitempty"`
+	F_Uint32Optional  *uint32  `protobuf:"varint,35,opt,name=F_Uint32_optional,json=FUint32Optional" json:"F_Uint32_optional,omitempty"`
+	F_Uint64Optional  *uint64  `protobuf:"varint,36,opt,name=F_Uint64_optional,json=FUint64Optional" json:"F_Uint64_optional,omitempty"`
+	F_FloatOptional   *float32 `protobuf:"fixed32,37,opt,name=F_Float_optional,json=FFloatOptional" json:"F_Float_optional,omitempty"`
+	F_DoubleOptional  *float64 `protobuf:"fixed64,38,opt,name=F_Double_optional,json=FDoubleOptional" json:"F_Double_optional,omitempty"`
+	F_StringOptional  *string  `protobuf:"bytes,39,opt,name=F_String_optional,json=FStringOptional" json:"F_String_optional,omitempty"`
+	F_BytesOptional   []byte   `protobuf:"bytes,301,opt,name=F_Bytes_optional,json=FBytesOptional" json:"F_Bytes_optional,omitempty"`
+	F_Sint32Optional  *int32   `protobuf:"zigzag32,302,opt,name=F_Sint32_optional,json=FSint32Optional" json:"F_Sint32_optional,omitempty"`
+	F_Sint64Optional  *int64   `protobuf:"zigzag64,303,opt,name=F_Sint64_optional,json=FSint64Optional" json:"F_Sint64_optional,omitempty"`
+	// Default-valued fields of all basic types
+	F_BoolDefaulted    *bool    `protobuf:"varint,40,opt,name=F_Bool_defaulted,json=FBoolDefaulted,def=1" json:"F_Bool_defaulted,omitempty"`
+	F_Int32Defaulted   *int32   `protobuf:"varint,41,opt,name=F_Int32_defaulted,json=FInt32Defaulted,def=32" json:"F_Int32_defaulted,omitempty"`
+	F_Int64Defaulted   *int64   `protobuf:"varint,42,opt,name=F_Int64_defaulted,json=FInt64Defaulted,def=64" json:"F_Int64_defaulted,omitempty"`
+	F_Fixed32Defaulted *uint32  `protobuf:"fixed32,43,opt,name=F_Fixed32_defaulted,json=FFixed32Defaulted,def=320" json:"F_Fixed32_defaulted,omitempty"`
+	F_Fixed64Defaulted *uint64  `protobuf:"fixed64,44,opt,name=F_Fixed64_defaulted,json=FFixed64Defaulted,def=640" json:"F_Fixed64_defaulted,omitempty"`
+	F_Uint32Defaulted  *uint32  `protobuf:"varint,45,opt,name=F_Uint32_defaulted,json=FUint32Defaulted,def=3200" json:"F_Uint32_defaulted,omitempty"`
+	F_Uint64Defaulted  *uint64  `protobuf:"varint,46,opt,name=F_Uint64_defaulted,json=FUint64Defaulted,def=6400" json:"F_Uint64_defaulted,omitempty"`
+	F_FloatDefaulted   *float32 `protobuf:"fixed32,47,opt,name=F_Float_defaulted,json=FFloatDefaulted,def=314159" json:"F_Float_defaulted,omitempty"`
+	F_DoubleDefaulted  *float64 `protobuf:"fixed64,48,opt,name=F_Double_defaulted,json=FDoubleDefaulted,def=271828" json:"F_Double_defaulted,omitempty"`
+	F_StringDefaulted  *string  `protobuf:"bytes,49,opt,name=F_String_defaulted,json=FStringDefaulted,def=hello, \"world!\"\n" json:"F_String_defaulted,omitempty"`
+	F_BytesDefaulted   []byte   `protobuf:"bytes,401,opt,name=F_Bytes_defaulted,json=FBytesDefaulted,def=Bignose" json:"F_Bytes_defaulted,omitempty"`
+	F_Sint32Defaulted  *int32   `protobuf:"zigzag32,402,opt,name=F_Sint32_defaulted,json=FSint32Defaulted,def=-32" json:"F_Sint32_defaulted,omitempty"`
+	F_Sint64Defaulted  *int64   `protobuf:"zigzag64,403,opt,name=F_Sint64_defaulted,json=FSint64Defaulted,def=-64" json:"F_Sint64_defaulted,omitempty"`
+	// Packed repeated fields (no string or bytes).
+	F_BoolRepeatedPacked    []bool                  `protobuf:"varint,50,rep,packed,name=F_Bool_repeated_packed,json=FBoolRepeatedPacked" json:"F_Bool_repeated_packed,omitempty"`
+	F_Int32RepeatedPacked   []int32                 `protobuf:"varint,51,rep,packed,name=F_Int32_repeated_packed,json=FInt32RepeatedPacked" json:"F_Int32_repeated_packed,omitempty"`
+	F_Int64RepeatedPacked   []int64                 `protobuf:"varint,52,rep,packed,name=F_Int64_repeated_packed,json=FInt64RepeatedPacked" json:"F_Int64_repeated_packed,omitempty"`
+	F_Fixed32RepeatedPacked []uint32                `protobuf:"fixed32,53,rep,packed,name=F_Fixed32_repeated_packed,json=FFixed32RepeatedPacked" json:"F_Fixed32_repeated_packed,omitempty"`
+	F_Fixed64RepeatedPacked []uint64                `protobuf:"fixed64,54,rep,packed,name=F_Fixed64_repeated_packed,json=FFixed64RepeatedPacked" json:"F_Fixed64_repeated_packed,omitempty"`
+	F_Uint32RepeatedPacked  []uint32                `protobuf:"varint,55,rep,packed,name=F_Uint32_repeated_packed,json=FUint32RepeatedPacked" json:"F_Uint32_repeated_packed,omitempty"`
+	F_Uint64RepeatedPacked  []uint64                `protobuf:"varint,56,rep,packed,name=F_Uint64_repeated_packed,json=FUint64RepeatedPacked" json:"F_Uint64_repeated_packed,omitempty"`
+	F_FloatRepeatedPacked   []float32               `protobuf:"fixed32,57,rep,packed,name=F_Float_repeated_packed,json=FFloatRepeatedPacked" json:"F_Float_repeated_packed,omitempty"`
+	F_DoubleRepeatedPacked  []float64               `protobuf:"fixed64,58,rep,packed,name=F_Double_repeated_packed,json=FDoubleRepeatedPacked" json:"F_Double_repeated_packed,omitempty"`
+	F_Sint32RepeatedPacked  []int32                 `protobuf:"zigzag32,502,rep,packed,name=F_Sint32_repeated_packed,json=FSint32RepeatedPacked" json:"F_Sint32_repeated_packed,omitempty"`
+	F_Sint64RepeatedPacked  []int64                 `protobuf:"zigzag64,503,rep,packed,name=F_Sint64_repeated_packed,json=FSint64RepeatedPacked" json:"F_Sint64_repeated_packed,omitempty"`
+	Requiredgroup           *GoTest_RequiredGroup   `protobuf:"group,70,req,name=RequiredGroup,json=requiredgroup" json:"requiredgroup,omitempty"`
+	Repeatedgroup           []*GoTest_RepeatedGroup `protobuf:"group,80,rep,name=RepeatedGroup,json=repeatedgroup" json:"repeatedgroup,omitempty"`
+	Optionalgroup           *GoTest_OptionalGroup   `protobuf:"group,90,opt,name=OptionalGroup,json=optionalgroup" json:"optionalgroup,omitempty"`
+	XXX_unrecognized        []byte                  `json:"-"`
+}
+
+func (m *GoTest) Reset()                    { *m = GoTest{} }
+func (m *GoTest) String() string            { return proto.CompactTextString(m) }
+func (*GoTest) ProtoMessage()               {}
+func (*GoTest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+
+const Default_GoTest_F_BoolDefaulted bool = true
+const Default_GoTest_F_Int32Defaulted int32 = 32
+const Default_GoTest_F_Int64Defaulted int64 = 64
+const Default_GoTest_F_Fixed32Defaulted uint32 = 320
+const Default_GoTest_F_Fixed64Defaulted uint64 = 640
+const Default_GoTest_F_Uint32Defaulted uint32 = 3200
+const Default_GoTest_F_Uint64Defaulted uint64 = 6400
+const Default_GoTest_F_FloatDefaulted float32 = 314159
+const Default_GoTest_F_DoubleDefaulted float64 = 271828
+const Default_GoTest_F_StringDefaulted string = "hello, \"world!\"\n"
+
+var Default_GoTest_F_BytesDefaulted []byte = []byte("Bignose")
+
+const Default_GoTest_F_Sint32Defaulted int32 = -32
+const Default_GoTest_F_Sint64Defaulted int64 = -64
+
+func (m *GoTest) GetKind() GoTest_KIND {
+	if m != nil && m.Kind != nil {
+		return *m.Kind
+	}
+	return GoTest_VOID
+}
+
+func (m *GoTest) GetTable() string {
+	if m != nil && m.Table != nil {
+		return *m.Table
+	}
+	return ""
+}
+
+func (m *GoTest) GetParam() int32 {
+	if m != nil && m.Param != nil {
+		return *m.Param
+	}
+	return 0
+}
+
+func (m *GoTest) GetRequiredField() *GoTestField {
+	if m != nil {
+		return m.RequiredField
+	}
+	return nil
+}
+
+func (m *GoTest) GetRepeatedField() []*GoTestField {
+	if m != nil {
+		return m.RepeatedField
+	}
+	return nil
+}
+
+func (m *GoTest) GetOptionalField() *GoTestField {
+	if m != nil {
+		return m.OptionalField
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_BoolRequired() bool {
+	if m != nil && m.F_BoolRequired != nil {
+		return *m.F_BoolRequired
+	}
+	return false
+}
+
+func (m *GoTest) GetF_Int32Required() int32 {
+	if m != nil && m.F_Int32Required != nil {
+		return *m.F_Int32Required
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_Int64Required() int64 {
+	if m != nil && m.F_Int64Required != nil {
+		return *m.F_Int64Required
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_Fixed32Required() uint32 {
+	if m != nil && m.F_Fixed32Required != nil {
+		return *m.F_Fixed32Required
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_Fixed64Required() uint64 {
+	if m != nil && m.F_Fixed64Required != nil {
+		return *m.F_Fixed64Required
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_Uint32Required() uint32 {
+	if m != nil && m.F_Uint32Required != nil {
+		return *m.F_Uint32Required
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_Uint64Required() uint64 {
+	if m != nil && m.F_Uint64Required != nil {
+		return *m.F_Uint64Required
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_FloatRequired() float32 {
+	if m != nil && m.F_FloatRequired != nil {
+		return *m.F_FloatRequired
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_DoubleRequired() float64 {
+	if m != nil && m.F_DoubleRequired != nil {
+		return *m.F_DoubleRequired
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_StringRequired() string {
+	if m != nil && m.F_StringRequired != nil {
+		return *m.F_StringRequired
+	}
+	return ""
+}
+
+func (m *GoTest) GetF_BytesRequired() []byte {
+	if m != nil {
+		return m.F_BytesRequired
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Sint32Required() int32 {
+	if m != nil && m.F_Sint32Required != nil {
+		return *m.F_Sint32Required
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_Sint64Required() int64 {
+	if m != nil && m.F_Sint64Required != nil {
+		return *m.F_Sint64Required
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_BoolRepeated() []bool {
+	if m != nil {
+		return m.F_BoolRepeated
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Int32Repeated() []int32 {
+	if m != nil {
+		return m.F_Int32Repeated
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Int64Repeated() []int64 {
+	if m != nil {
+		return m.F_Int64Repeated
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Fixed32Repeated() []uint32 {
+	if m != nil {
+		return m.F_Fixed32Repeated
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Fixed64Repeated() []uint64 {
+	if m != nil {
+		return m.F_Fixed64Repeated
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Uint32Repeated() []uint32 {
+	if m != nil {
+		return m.F_Uint32Repeated
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Uint64Repeated() []uint64 {
+	if m != nil {
+		return m.F_Uint64Repeated
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_FloatRepeated() []float32 {
+	if m != nil {
+		return m.F_FloatRepeated
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_DoubleRepeated() []float64 {
+	if m != nil {
+		return m.F_DoubleRepeated
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_StringRepeated() []string {
+	if m != nil {
+		return m.F_StringRepeated
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_BytesRepeated() [][]byte {
+	if m != nil {
+		return m.F_BytesRepeated
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Sint32Repeated() []int32 {
+	if m != nil {
+		return m.F_Sint32Repeated
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Sint64Repeated() []int64 {
+	if m != nil {
+		return m.F_Sint64Repeated
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_BoolOptional() bool {
+	if m != nil && m.F_BoolOptional != nil {
+		return *m.F_BoolOptional
+	}
+	return false
+}
+
+func (m *GoTest) GetF_Int32Optional() int32 {
+	if m != nil && m.F_Int32Optional != nil {
+		return *m.F_Int32Optional
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_Int64Optional() int64 {
+	if m != nil && m.F_Int64Optional != nil {
+		return *m.F_Int64Optional
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_Fixed32Optional() uint32 {
+	if m != nil && m.F_Fixed32Optional != nil {
+		return *m.F_Fixed32Optional
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_Fixed64Optional() uint64 {
+	if m != nil && m.F_Fixed64Optional != nil {
+		return *m.F_Fixed64Optional
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_Uint32Optional() uint32 {
+	if m != nil && m.F_Uint32Optional != nil {
+		return *m.F_Uint32Optional
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_Uint64Optional() uint64 {
+	if m != nil && m.F_Uint64Optional != nil {
+		return *m.F_Uint64Optional
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_FloatOptional() float32 {
+	if m != nil && m.F_FloatOptional != nil {
+		return *m.F_FloatOptional
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_DoubleOptional() float64 {
+	if m != nil && m.F_DoubleOptional != nil {
+		return *m.F_DoubleOptional
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_StringOptional() string {
+	if m != nil && m.F_StringOptional != nil {
+		return *m.F_StringOptional
+	}
+	return ""
+}
+
+func (m *GoTest) GetF_BytesOptional() []byte {
+	if m != nil {
+		return m.F_BytesOptional
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Sint32Optional() int32 {
+	if m != nil && m.F_Sint32Optional != nil {
+		return *m.F_Sint32Optional
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_Sint64Optional() int64 {
+	if m != nil && m.F_Sint64Optional != nil {
+		return *m.F_Sint64Optional
+	}
+	return 0
+}
+
+func (m *GoTest) GetF_BoolDefaulted() bool {
+	if m != nil && m.F_BoolDefaulted != nil {
+		return *m.F_BoolDefaulted
+	}
+	return Default_GoTest_F_BoolDefaulted
+}
+
+func (m *GoTest) GetF_Int32Defaulted() int32 {
+	if m != nil && m.F_Int32Defaulted != nil {
+		return *m.F_Int32Defaulted
+	}
+	return Default_GoTest_F_Int32Defaulted
+}
+
+func (m *GoTest) GetF_Int64Defaulted() int64 {
+	if m != nil && m.F_Int64Defaulted != nil {
+		return *m.F_Int64Defaulted
+	}
+	return Default_GoTest_F_Int64Defaulted
+}
+
+func (m *GoTest) GetF_Fixed32Defaulted() uint32 {
+	if m != nil && m.F_Fixed32Defaulted != nil {
+		return *m.F_Fixed32Defaulted
+	}
+	return Default_GoTest_F_Fixed32Defaulted
+}
+
+func (m *GoTest) GetF_Fixed64Defaulted() uint64 {
+	if m != nil && m.F_Fixed64Defaulted != nil {
+		return *m.F_Fixed64Defaulted
+	}
+	return Default_GoTest_F_Fixed64Defaulted
+}
+
+func (m *GoTest) GetF_Uint32Defaulted() uint32 {
+	if m != nil && m.F_Uint32Defaulted != nil {
+		return *m.F_Uint32Defaulted
+	}
+	return Default_GoTest_F_Uint32Defaulted
+}
+
+func (m *GoTest) GetF_Uint64Defaulted() uint64 {
+	if m != nil && m.F_Uint64Defaulted != nil {
+		return *m.F_Uint64Defaulted
+	}
+	return Default_GoTest_F_Uint64Defaulted
+}
+
+func (m *GoTest) GetF_FloatDefaulted() float32 {
+	if m != nil && m.F_FloatDefaulted != nil {
+		return *m.F_FloatDefaulted
+	}
+	return Default_GoTest_F_FloatDefaulted
+}
+
+func (m *GoTest) GetF_DoubleDefaulted() float64 {
+	if m != nil && m.F_DoubleDefaulted != nil {
+		return *m.F_DoubleDefaulted
+	}
+	return Default_GoTest_F_DoubleDefaulted
+}
+
+func (m *GoTest) GetF_StringDefaulted() string {
+	if m != nil && m.F_StringDefaulted != nil {
+		return *m.F_StringDefaulted
+	}
+	return Default_GoTest_F_StringDefaulted
+}
+
+func (m *GoTest) GetF_BytesDefaulted() []byte {
+	if m != nil && m.F_BytesDefaulted != nil {
+		return m.F_BytesDefaulted
+	}
+	return append([]byte(nil), Default_GoTest_F_BytesDefaulted...)
+}
+
+func (m *GoTest) GetF_Sint32Defaulted() int32 {
+	if m != nil && m.F_Sint32Defaulted != nil {
+		return *m.F_Sint32Defaulted
+	}
+	return Default_GoTest_F_Sint32Defaulted
+}
+
+func (m *GoTest) GetF_Sint64Defaulted() int64 {
+	if m != nil && m.F_Sint64Defaulted != nil {
+		return *m.F_Sint64Defaulted
+	}
+	return Default_GoTest_F_Sint64Defaulted
+}
+
+func (m *GoTest) GetF_BoolRepeatedPacked() []bool {
+	if m != nil {
+		return m.F_BoolRepeatedPacked
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Int32RepeatedPacked() []int32 {
+	if m != nil {
+		return m.F_Int32RepeatedPacked
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Int64RepeatedPacked() []int64 {
+	if m != nil {
+		return m.F_Int64RepeatedPacked
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Fixed32RepeatedPacked() []uint32 {
+	if m != nil {
+		return m.F_Fixed32RepeatedPacked
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Fixed64RepeatedPacked() []uint64 {
+	if m != nil {
+		return m.F_Fixed64RepeatedPacked
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Uint32RepeatedPacked() []uint32 {
+	if m != nil {
+		return m.F_Uint32RepeatedPacked
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Uint64RepeatedPacked() []uint64 {
+	if m != nil {
+		return m.F_Uint64RepeatedPacked
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_FloatRepeatedPacked() []float32 {
+	if m != nil {
+		return m.F_FloatRepeatedPacked
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_DoubleRepeatedPacked() []float64 {
+	if m != nil {
+		return m.F_DoubleRepeatedPacked
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Sint32RepeatedPacked() []int32 {
+	if m != nil {
+		return m.F_Sint32RepeatedPacked
+	}
+	return nil
+}
+
+func (m *GoTest) GetF_Sint64RepeatedPacked() []int64 {
+	if m != nil {
+		return m.F_Sint64RepeatedPacked
+	}
+	return nil
+}
+
+func (m *GoTest) GetRequiredgroup() *GoTest_RequiredGroup {
+	if m != nil {
+		return m.Requiredgroup
+	}
+	return nil
+}
+
+func (m *GoTest) GetRepeatedgroup() []*GoTest_RepeatedGroup {
+	if m != nil {
+		return m.Repeatedgroup
+	}
+	return nil
+}
+
+func (m *GoTest) GetOptionalgroup() *GoTest_OptionalGroup {
+	if m != nil {
+		return m.Optionalgroup
+	}
+	return nil
+}
+
+// Required, repeated, and optional groups.
+type GoTest_RequiredGroup struct {
+	RequiredField    *string `protobuf:"bytes,71,req,name=RequiredField" json:"RequiredField,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *GoTest_RequiredGroup) Reset()                    { *m = GoTest_RequiredGroup{} }
+func (m *GoTest_RequiredGroup) String() string            { return proto.CompactTextString(m) }
+func (*GoTest_RequiredGroup) ProtoMessage()               {}
+func (*GoTest_RequiredGroup) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2, 0} }
+
+func (m *GoTest_RequiredGroup) GetRequiredField() string {
+	if m != nil && m.RequiredField != nil {
+		return *m.RequiredField
+	}
+	return ""
+}
+
+type GoTest_RepeatedGroup struct {
+	RequiredField    *string `protobuf:"bytes,81,req,name=RequiredField" json:"RequiredField,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *GoTest_RepeatedGroup) Reset()                    { *m = GoTest_RepeatedGroup{} }
+func (m *GoTest_RepeatedGroup) String() string            { return proto.CompactTextString(m) }
+func (*GoTest_RepeatedGroup) ProtoMessage()               {}
+func (*GoTest_RepeatedGroup) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2, 1} }
+
+func (m *GoTest_RepeatedGroup) GetRequiredField() string {
+	if m != nil && m.RequiredField != nil {
+		return *m.RequiredField
+	}
+	return ""
+}
+
+type GoTest_OptionalGroup struct {
+	RequiredField    *string `protobuf:"bytes,91,req,name=RequiredField" json:"RequiredField,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *GoTest_OptionalGroup) Reset()                    { *m = GoTest_OptionalGroup{} }
+func (m *GoTest_OptionalGroup) String() string            { return proto.CompactTextString(m) }
+func (*GoTest_OptionalGroup) ProtoMessage()               {}
+func (*GoTest_OptionalGroup) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2, 2} }
+
+func (m *GoTest_OptionalGroup) GetRequiredField() string {
+	if m != nil && m.RequiredField != nil {
+		return *m.RequiredField
+	}
+	return ""
+}
+
+// For testing a group containing a required field.
+type GoTestRequiredGroupField struct {
+	Group            *GoTestRequiredGroupField_Group `protobuf:"group,1,req,name=Group,json=group" json:"group,omitempty"`
+	XXX_unrecognized []byte                          `json:"-"`
+}
+
+func (m *GoTestRequiredGroupField) Reset()                    { *m = GoTestRequiredGroupField{} }
+func (m *GoTestRequiredGroupField) String() string            { return proto.CompactTextString(m) }
+func (*GoTestRequiredGroupField) ProtoMessage()               {}
+func (*GoTestRequiredGroupField) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
+
+func (m *GoTestRequiredGroupField) GetGroup() *GoTestRequiredGroupField_Group {
+	if m != nil {
+		return m.Group
+	}
+	return nil
+}
+
+type GoTestRequiredGroupField_Group struct {
+	Field            *int32 `protobuf:"varint,2,req,name=Field" json:"Field,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *GoTestRequiredGroupField_Group) Reset()         { *m = GoTestRequiredGroupField_Group{} }
+func (m *GoTestRequiredGroupField_Group) String() string { return proto.CompactTextString(m) }
+func (*GoTestRequiredGroupField_Group) ProtoMessage()    {}
+func (*GoTestRequiredGroupField_Group) Descriptor() ([]byte, []int) {
+	return fileDescriptor0, []int{3, 0}
+}
+
+func (m *GoTestRequiredGroupField_Group) GetField() int32 {
+	if m != nil && m.Field != nil {
+		return *m.Field
+	}
+	return 0
+}
+
+// For testing skipping of unrecognized fields.
+// Numbers are all big, larger than tag numbers in GoTestField,
+// the message used in the corresponding test.
+type GoSkipTest struct {
+	SkipInt32        *int32                `protobuf:"varint,11,req,name=skip_int32,json=skipInt32" json:"skip_int32,omitempty"`
+	SkipFixed32      *uint32               `protobuf:"fixed32,12,req,name=skip_fixed32,json=skipFixed32" json:"skip_fixed32,omitempty"`
+	SkipFixed64      *uint64               `protobuf:"fixed64,13,req,name=skip_fixed64,json=skipFixed64" json:"skip_fixed64,omitempty"`
+	SkipString       *string               `protobuf:"bytes,14,req,name=skip_string,json=skipString" json:"skip_string,omitempty"`
+	Skipgroup        *GoSkipTest_SkipGroup `protobuf:"group,15,req,name=SkipGroup,json=skipgroup" json:"skipgroup,omitempty"`
+	XXX_unrecognized []byte                `json:"-"`
+}
+
+func (m *GoSkipTest) Reset()                    { *m = GoSkipTest{} }
+func (m *GoSkipTest) String() string            { return proto.CompactTextString(m) }
+func (*GoSkipTest) ProtoMessage()               {}
+func (*GoSkipTest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
+
+func (m *GoSkipTest) GetSkipInt32() int32 {
+	if m != nil && m.SkipInt32 != nil {
+		return *m.SkipInt32
+	}
+	return 0
+}
+
+func (m *GoSkipTest) GetSkipFixed32() uint32 {
+	if m != nil && m.SkipFixed32 != nil {
+		return *m.SkipFixed32
+	}
+	return 0
+}
+
+func (m *GoSkipTest) GetSkipFixed64() uint64 {
+	if m != nil && m.SkipFixed64 != nil {
+		return *m.SkipFixed64
+	}
+	return 0
+}
+
+func (m *GoSkipTest) GetSkipString() string {
+	if m != nil && m.SkipString != nil {
+		return *m.SkipString
+	}
+	return ""
+}
+
+func (m *GoSkipTest) GetSkipgroup() *GoSkipTest_SkipGroup {
+	if m != nil {
+		return m.Skipgroup
+	}
+	return nil
+}
+
+type GoSkipTest_SkipGroup struct {
+	GroupInt32       *int32  `protobuf:"varint,16,req,name=group_int32,json=groupInt32" json:"group_int32,omitempty"`
+	GroupString      *string `protobuf:"bytes,17,req,name=group_string,json=groupString" json:"group_string,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *GoSkipTest_SkipGroup) Reset()                    { *m = GoSkipTest_SkipGroup{} }
+func (m *GoSkipTest_SkipGroup) String() string            { return proto.CompactTextString(m) }
+func (*GoSkipTest_SkipGroup) ProtoMessage()               {}
+func (*GoSkipTest_SkipGroup) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4, 0} }
+
+func (m *GoSkipTest_SkipGroup) GetGroupInt32() int32 {
+	if m != nil && m.GroupInt32 != nil {
+		return *m.GroupInt32
+	}
+	return 0
+}
+
+func (m *GoSkipTest_SkipGroup) GetGroupString() string {
+	if m != nil && m.GroupString != nil {
+		return *m.GroupString
+	}
+	return ""
+}
+
+// For testing packed/non-packed decoder switching.
+// A serialized instance of one should be deserializable as the other.
+type NonPackedTest struct {
+	A                []int32 `protobuf:"varint,1,rep,name=a" json:"a,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *NonPackedTest) Reset()                    { *m = NonPackedTest{} }
+func (m *NonPackedTest) String() string            { return proto.CompactTextString(m) }
+func (*NonPackedTest) ProtoMessage()               {}
+func (*NonPackedTest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} }
+
+func (m *NonPackedTest) GetA() []int32 {
+	if m != nil {
+		return m.A
+	}
+	return nil
+}
+
+type PackedTest struct {
+	B                []int32 `protobuf:"varint,1,rep,packed,name=b" json:"b,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *PackedTest) Reset()                    { *m = PackedTest{} }
+func (m *PackedTest) String() string            { return proto.CompactTextString(m) }
+func (*PackedTest) ProtoMessage()               {}
+func (*PackedTest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{6} }
+
+func (m *PackedTest) GetB() []int32 {
+	if m != nil {
+		return m.B
+	}
+	return nil
+}
+
+type MaxTag struct {
+	// Maximum possible tag number.
+	LastField        *string `protobuf:"bytes,536870911,opt,name=last_field,json=lastField" json:"last_field,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *MaxTag) Reset()                    { *m = MaxTag{} }
+func (m *MaxTag) String() string            { return proto.CompactTextString(m) }
+func (*MaxTag) ProtoMessage()               {}
+func (*MaxTag) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} }
+
+func (m *MaxTag) GetLastField() string {
+	if m != nil && m.LastField != nil {
+		return *m.LastField
+	}
+	return ""
+}
+
+type OldMessage struct {
+	Nested           *OldMessage_Nested `protobuf:"bytes,1,opt,name=nested" json:"nested,omitempty"`
+	Num              *int32             `protobuf:"varint,2,opt,name=num" json:"num,omitempty"`
+	XXX_unrecognized []byte             `json:"-"`
+}
+
+func (m *OldMessage) Reset()                    { *m = OldMessage{} }
+func (m *OldMessage) String() string            { return proto.CompactTextString(m) }
+func (*OldMessage) ProtoMessage()               {}
+func (*OldMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{8} }
+
+func (m *OldMessage) GetNested() *OldMessage_Nested {
+	if m != nil {
+		return m.Nested
+	}
+	return nil
+}
+
+func (m *OldMessage) GetNum() int32 {
+	if m != nil && m.Num != nil {
+		return *m.Num
+	}
+	return 0
+}
+
+type OldMessage_Nested struct {
+	Name             *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *OldMessage_Nested) Reset()                    { *m = OldMessage_Nested{} }
+func (m *OldMessage_Nested) String() string            { return proto.CompactTextString(m) }
+func (*OldMessage_Nested) ProtoMessage()               {}
+func (*OldMessage_Nested) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{8, 0} }
+
+func (m *OldMessage_Nested) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+// NewMessage is wire compatible with OldMessage;
+// imagine it as a future version.
+type NewMessage struct {
+	Nested *NewMessage_Nested `protobuf:"bytes,1,opt,name=nested" json:"nested,omitempty"`
+	// This is an int32 in OldMessage.
+	Num              *int64 `protobuf:"varint,2,opt,name=num" json:"num,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *NewMessage) Reset()                    { *m = NewMessage{} }
+func (m *NewMessage) String() string            { return proto.CompactTextString(m) }
+func (*NewMessage) ProtoMessage()               {}
+func (*NewMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{9} }
+
+func (m *NewMessage) GetNested() *NewMessage_Nested {
+	if m != nil {
+		return m.Nested
+	}
+	return nil
+}
+
+func (m *NewMessage) GetNum() int64 {
+	if m != nil && m.Num != nil {
+		return *m.Num
+	}
+	return 0
+}
+
+type NewMessage_Nested struct {
+	Name             *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	FoodGroup        *string `protobuf:"bytes,2,opt,name=food_group,json=foodGroup" json:"food_group,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *NewMessage_Nested) Reset()                    { *m = NewMessage_Nested{} }
+func (m *NewMessage_Nested) String() string            { return proto.CompactTextString(m) }
+func (*NewMessage_Nested) ProtoMessage()               {}
+func (*NewMessage_Nested) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{9, 0} }
+
+func (m *NewMessage_Nested) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *NewMessage_Nested) GetFoodGroup() string {
+	if m != nil && m.FoodGroup != nil {
+		return *m.FoodGroup
+	}
+	return ""
+}
+
+type InnerMessage struct {
+	Host             *string `protobuf:"bytes,1,req,name=host" json:"host,omitempty"`
+	Port             *int32  `protobuf:"varint,2,opt,name=port,def=4000" json:"port,omitempty"`
+	Connected        *bool   `protobuf:"varint,3,opt,name=connected" json:"connected,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *InnerMessage) Reset()                    { *m = InnerMessage{} }
+func (m *InnerMessage) String() string            { return proto.CompactTextString(m) }
+func (*InnerMessage) ProtoMessage()               {}
+func (*InnerMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{10} }
+
+const Default_InnerMessage_Port int32 = 4000
+
+func (m *InnerMessage) GetHost() string {
+	if m != nil && m.Host != nil {
+		return *m.Host
+	}
+	return ""
+}
+
+func (m *InnerMessage) GetPort() int32 {
+	if m != nil && m.Port != nil {
+		return *m.Port
+	}
+	return Default_InnerMessage_Port
+}
+
+func (m *InnerMessage) GetConnected() bool {
+	if m != nil && m.Connected != nil {
+		return *m.Connected
+	}
+	return false
+}
+
+type OtherMessage struct {
+	Key                          *int64        `protobuf:"varint,1,opt,name=key" json:"key,omitempty"`
+	Value                        []byte        `protobuf:"bytes,2,opt,name=value" json:"value,omitempty"`
+	Weight                       *float32      `protobuf:"fixed32,3,opt,name=weight" json:"weight,omitempty"`
+	Inner                        *InnerMessage `protobuf:"bytes,4,opt,name=inner" json:"inner,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *OtherMessage) Reset()                    { *m = OtherMessage{} }
+func (m *OtherMessage) String() string            { return proto.CompactTextString(m) }
+func (*OtherMessage) ProtoMessage()               {}
+func (*OtherMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{11} }
+
+var extRange_OtherMessage = []proto.ExtensionRange{
+	{100, 536870911},
+}
+
+func (*OtherMessage) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_OtherMessage
+}
+
+func (m *OtherMessage) GetKey() int64 {
+	if m != nil && m.Key != nil {
+		return *m.Key
+	}
+	return 0
+}
+
+func (m *OtherMessage) GetValue() []byte {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (m *OtherMessage) GetWeight() float32 {
+	if m != nil && m.Weight != nil {
+		return *m.Weight
+	}
+	return 0
+}
+
+func (m *OtherMessage) GetInner() *InnerMessage {
+	if m != nil {
+		return m.Inner
+	}
+	return nil
+}
+
+type RequiredInnerMessage struct {
+	LeoFinallyWonAnOscar *InnerMessage `protobuf:"bytes,1,req,name=leo_finally_won_an_oscar,json=leoFinallyWonAnOscar" json:"leo_finally_won_an_oscar,omitempty"`
+	XXX_unrecognized     []byte        `json:"-"`
+}
+
+func (m *RequiredInnerMessage) Reset()                    { *m = RequiredInnerMessage{} }
+func (m *RequiredInnerMessage) String() string            { return proto.CompactTextString(m) }
+func (*RequiredInnerMessage) ProtoMessage()               {}
+func (*RequiredInnerMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{12} }
+
+func (m *RequiredInnerMessage) GetLeoFinallyWonAnOscar() *InnerMessage {
+	if m != nil {
+		return m.LeoFinallyWonAnOscar
+	}
+	return nil
+}
+
+type MyMessage struct {
+	Count          *int32                `protobuf:"varint,1,req,name=count" json:"count,omitempty"`
+	Name           *string               `protobuf:"bytes,2,opt,name=name" json:"name,omitempty"`
+	Quote          *string               `protobuf:"bytes,3,opt,name=quote" json:"quote,omitempty"`
+	Pet            []string              `protobuf:"bytes,4,rep,name=pet" json:"pet,omitempty"`
+	Inner          *InnerMessage         `protobuf:"bytes,5,opt,name=inner" json:"inner,omitempty"`
+	Others         []*OtherMessage       `protobuf:"bytes,6,rep,name=others" json:"others,omitempty"`
+	WeMustGoDeeper *RequiredInnerMessage `protobuf:"bytes,13,opt,name=we_must_go_deeper,json=weMustGoDeeper" json:"we_must_go_deeper,omitempty"`
+	RepInner       []*InnerMessage       `protobuf:"bytes,12,rep,name=rep_inner,json=repInner" json:"rep_inner,omitempty"`
+	Bikeshed       *MyMessage_Color      `protobuf:"varint,7,opt,name=bikeshed,enum=testdata.MyMessage_Color" json:"bikeshed,omitempty"`
+	Somegroup      *MyMessage_SomeGroup  `protobuf:"group,8,opt,name=SomeGroup,json=somegroup" json:"somegroup,omitempty"`
+	// This field becomes [][]byte in the generated code.
+	RepBytes                     [][]byte `protobuf:"bytes,10,rep,name=rep_bytes,json=repBytes" json:"rep_bytes,omitempty"`
+	Bigfloat                     *float64 `protobuf:"fixed64,11,opt,name=bigfloat" json:"bigfloat,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *MyMessage) Reset()                    { *m = MyMessage{} }
+func (m *MyMessage) String() string            { return proto.CompactTextString(m) }
+func (*MyMessage) ProtoMessage()               {}
+func (*MyMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{13} }
+
+var extRange_MyMessage = []proto.ExtensionRange{
+	{100, 536870911},
+}
+
+func (*MyMessage) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_MyMessage
+}
+
+func (m *MyMessage) GetCount() int32 {
+	if m != nil && m.Count != nil {
+		return *m.Count
+	}
+	return 0
+}
+
+func (m *MyMessage) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *MyMessage) GetQuote() string {
+	if m != nil && m.Quote != nil {
+		return *m.Quote
+	}
+	return ""
+}
+
+func (m *MyMessage) GetPet() []string {
+	if m != nil {
+		return m.Pet
+	}
+	return nil
+}
+
+func (m *MyMessage) GetInner() *InnerMessage {
+	if m != nil {
+		return m.Inner
+	}
+	return nil
+}
+
+func (m *MyMessage) GetOthers() []*OtherMessage {
+	if m != nil {
+		return m.Others
+	}
+	return nil
+}
+
+func (m *MyMessage) GetWeMustGoDeeper() *RequiredInnerMessage {
+	if m != nil {
+		return m.WeMustGoDeeper
+	}
+	return nil
+}
+
+func (m *MyMessage) GetRepInner() []*InnerMessage {
+	if m != nil {
+		return m.RepInner
+	}
+	return nil
+}
+
+func (m *MyMessage) GetBikeshed() MyMessage_Color {
+	if m != nil && m.Bikeshed != nil {
+		return *m.Bikeshed
+	}
+	return MyMessage_RED
+}
+
+func (m *MyMessage) GetSomegroup() *MyMessage_SomeGroup {
+	if m != nil {
+		return m.Somegroup
+	}
+	return nil
+}
+
+func (m *MyMessage) GetRepBytes() [][]byte {
+	if m != nil {
+		return m.RepBytes
+	}
+	return nil
+}
+
+func (m *MyMessage) GetBigfloat() float64 {
+	if m != nil && m.Bigfloat != nil {
+		return *m.Bigfloat
+	}
+	return 0
+}
+
+type MyMessage_SomeGroup struct {
+	GroupField       *int32 `protobuf:"varint,9,opt,name=group_field,json=groupField" json:"group_field,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *MyMessage_SomeGroup) Reset()                    { *m = MyMessage_SomeGroup{} }
+func (m *MyMessage_SomeGroup) String() string            { return proto.CompactTextString(m) }
+func (*MyMessage_SomeGroup) ProtoMessage()               {}
+func (*MyMessage_SomeGroup) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{13, 0} }
+
+func (m *MyMessage_SomeGroup) GetGroupField() int32 {
+	if m != nil && m.GroupField != nil {
+		return *m.GroupField
+	}
+	return 0
+}
+
+type Ext struct {
+	Data             *string `protobuf:"bytes,1,opt,name=data" json:"data,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *Ext) Reset()                    { *m = Ext{} }
+func (m *Ext) String() string            { return proto.CompactTextString(m) }
+func (*Ext) ProtoMessage()               {}
+func (*Ext) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{14} }
+
+func (m *Ext) GetData() string {
+	if m != nil && m.Data != nil {
+		return *m.Data
+	}
+	return ""
+}
+
+var E_Ext_More = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessage)(nil),
+	ExtensionType: (*Ext)(nil),
+	Field:         103,
+	Name:          "testdata.Ext.more",
+	Tag:           "bytes,103,opt,name=more",
+	Filename:      "test.proto",
+}
+
+var E_Ext_Text = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessage)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         104,
+	Name:          "testdata.Ext.text",
+	Tag:           "bytes,104,opt,name=text",
+	Filename:      "test.proto",
+}
+
+var E_Ext_Number = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessage)(nil),
+	ExtensionType: (*int32)(nil),
+	Field:         105,
+	Name:          "testdata.Ext.number",
+	Tag:           "varint,105,opt,name=number",
+	Filename:      "test.proto",
+}
+
+type ComplexExtension struct {
+	First            *int32  `protobuf:"varint,1,opt,name=first" json:"first,omitempty"`
+	Second           *int32  `protobuf:"varint,2,opt,name=second" json:"second,omitempty"`
+	Third            []int32 `protobuf:"varint,3,rep,name=third" json:"third,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *ComplexExtension) Reset()                    { *m = ComplexExtension{} }
+func (m *ComplexExtension) String() string            { return proto.CompactTextString(m) }
+func (*ComplexExtension) ProtoMessage()               {}
+func (*ComplexExtension) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{15} }
+
+func (m *ComplexExtension) GetFirst() int32 {
+	if m != nil && m.First != nil {
+		return *m.First
+	}
+	return 0
+}
+
+func (m *ComplexExtension) GetSecond() int32 {
+	if m != nil && m.Second != nil {
+		return *m.Second
+	}
+	return 0
+}
+
+func (m *ComplexExtension) GetThird() []int32 {
+	if m != nil {
+		return m.Third
+	}
+	return nil
+}
+
+type DefaultsMessage struct {
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *DefaultsMessage) Reset()                    { *m = DefaultsMessage{} }
+func (m *DefaultsMessage) String() string            { return proto.CompactTextString(m) }
+func (*DefaultsMessage) ProtoMessage()               {}
+func (*DefaultsMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{16} }
+
+var extRange_DefaultsMessage = []proto.ExtensionRange{
+	{100, 536870911},
+}
+
+func (*DefaultsMessage) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_DefaultsMessage
+}
+
+type MyMessageSet struct {
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *MyMessageSet) Reset()                    { *m = MyMessageSet{} }
+func (m *MyMessageSet) String() string            { return proto.CompactTextString(m) }
+func (*MyMessageSet) ProtoMessage()               {}
+func (*MyMessageSet) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{17} }
+
+func (m *MyMessageSet) Marshal() ([]byte, error) {
+	return proto.MarshalMessageSet(&m.XXX_InternalExtensions)
+}
+func (m *MyMessageSet) Unmarshal(buf []byte) error {
+	return proto.UnmarshalMessageSet(buf, &m.XXX_InternalExtensions)
+}
+func (m *MyMessageSet) MarshalJSON() ([]byte, error) {
+	return proto.MarshalMessageSetJSON(&m.XXX_InternalExtensions)
+}
+func (m *MyMessageSet) UnmarshalJSON(buf []byte) error {
+	return proto.UnmarshalMessageSetJSON(buf, &m.XXX_InternalExtensions)
+}
+
+// ensure MyMessageSet satisfies proto.Marshaler and proto.Unmarshaler
+var _ proto.Marshaler = (*MyMessageSet)(nil)
+var _ proto.Unmarshaler = (*MyMessageSet)(nil)
+
+var extRange_MyMessageSet = []proto.ExtensionRange{
+	{100, 2147483646},
+}
+
+func (*MyMessageSet) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_MyMessageSet
+}
+
+type Empty struct {
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *Empty) Reset()                    { *m = Empty{} }
+func (m *Empty) String() string            { return proto.CompactTextString(m) }
+func (*Empty) ProtoMessage()               {}
+func (*Empty) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{18} }
+
+type MessageList struct {
+	Message          []*MessageList_Message `protobuf:"group,1,rep,name=Message,json=message" json:"message,omitempty"`
+	XXX_unrecognized []byte                 `json:"-"`
+}
+
+func (m *MessageList) Reset()                    { *m = MessageList{} }
+func (m *MessageList) String() string            { return proto.CompactTextString(m) }
+func (*MessageList) ProtoMessage()               {}
+func (*MessageList) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{19} }
+
+func (m *MessageList) GetMessage() []*MessageList_Message {
+	if m != nil {
+		return m.Message
+	}
+	return nil
+}
+
+type MessageList_Message struct {
+	Name             *string `protobuf:"bytes,2,req,name=name" json:"name,omitempty"`
+	Count            *int32  `protobuf:"varint,3,req,name=count" json:"count,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *MessageList_Message) Reset()                    { *m = MessageList_Message{} }
+func (m *MessageList_Message) String() string            { return proto.CompactTextString(m) }
+func (*MessageList_Message) ProtoMessage()               {}
+func (*MessageList_Message) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{19, 0} }
+
+func (m *MessageList_Message) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *MessageList_Message) GetCount() int32 {
+	if m != nil && m.Count != nil {
+		return *m.Count
+	}
+	return 0
+}
+
+type Strings struct {
+	StringField      *string `protobuf:"bytes,1,opt,name=string_field,json=stringField" json:"string_field,omitempty"`
+	BytesField       []byte  `protobuf:"bytes,2,opt,name=bytes_field,json=bytesField" json:"bytes_field,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *Strings) Reset()                    { *m = Strings{} }
+func (m *Strings) String() string            { return proto.CompactTextString(m) }
+func (*Strings) ProtoMessage()               {}
+func (*Strings) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{20} }
+
+func (m *Strings) GetStringField() string {
+	if m != nil && m.StringField != nil {
+		return *m.StringField
+	}
+	return ""
+}
+
+func (m *Strings) GetBytesField() []byte {
+	if m != nil {
+		return m.BytesField
+	}
+	return nil
+}
+
+type Defaults struct {
+	// Default-valued fields of all basic types.
+	// Same as GoTest, but copied here to make testing easier.
+	F_Bool    *bool           `protobuf:"varint,1,opt,name=F_Bool,json=FBool,def=1" json:"F_Bool,omitempty"`
+	F_Int32   *int32          `protobuf:"varint,2,opt,name=F_Int32,json=FInt32,def=32" json:"F_Int32,omitempty"`
+	F_Int64   *int64          `protobuf:"varint,3,opt,name=F_Int64,json=FInt64,def=64" json:"F_Int64,omitempty"`
+	F_Fixed32 *uint32         `protobuf:"fixed32,4,opt,name=F_Fixed32,json=FFixed32,def=320" json:"F_Fixed32,omitempty"`
+	F_Fixed64 *uint64         `protobuf:"fixed64,5,opt,name=F_Fixed64,json=FFixed64,def=640" json:"F_Fixed64,omitempty"`
+	F_Uint32  *uint32         `protobuf:"varint,6,opt,name=F_Uint32,json=FUint32,def=3200" json:"F_Uint32,omitempty"`
+	F_Uint64  *uint64         `protobuf:"varint,7,opt,name=F_Uint64,json=FUint64,def=6400" json:"F_Uint64,omitempty"`
+	F_Float   *float32        `protobuf:"fixed32,8,opt,name=F_Float,json=FFloat,def=314159" json:"F_Float,omitempty"`
+	F_Double  *float64        `protobuf:"fixed64,9,opt,name=F_Double,json=FDouble,def=271828" json:"F_Double,omitempty"`
+	F_String  *string         `protobuf:"bytes,10,opt,name=F_String,json=FString,def=hello, \"world!\"\n" json:"F_String,omitempty"`
+	F_Bytes   []byte          `protobuf:"bytes,11,opt,name=F_Bytes,json=FBytes,def=Bignose" json:"F_Bytes,omitempty"`
+	F_Sint32  *int32          `protobuf:"zigzag32,12,opt,name=F_Sint32,json=FSint32,def=-32" json:"F_Sint32,omitempty"`
+	F_Sint64  *int64          `protobuf:"zigzag64,13,opt,name=F_Sint64,json=FSint64,def=-64" json:"F_Sint64,omitempty"`
+	F_Enum    *Defaults_Color `protobuf:"varint,14,opt,name=F_Enum,json=FEnum,enum=testdata.Defaults_Color,def=1" json:"F_Enum,omitempty"`
+	// More fields with crazy defaults.
+	F_Pinf *float32 `protobuf:"fixed32,15,opt,name=F_Pinf,json=FPinf,def=inf" json:"F_Pinf,omitempty"`
+	F_Ninf *float32 `protobuf:"fixed32,16,opt,name=F_Ninf,json=FNinf,def=-inf" json:"F_Ninf,omitempty"`
+	F_Nan  *float32 `protobuf:"fixed32,17,opt,name=F_Nan,json=FNan,def=nan" json:"F_Nan,omitempty"`
+	// Sub-message.
+	Sub *SubDefaults `protobuf:"bytes,18,opt,name=sub" json:"sub,omitempty"`
+	// Redundant but explicit defaults.
+	StrZero          *string `protobuf:"bytes,19,opt,name=str_zero,json=strZero,def=" json:"str_zero,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *Defaults) Reset()                    { *m = Defaults{} }
+func (m *Defaults) String() string            { return proto.CompactTextString(m) }
+func (*Defaults) ProtoMessage()               {}
+func (*Defaults) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{21} }
+
+const Default_Defaults_F_Bool bool = true
+const Default_Defaults_F_Int32 int32 = 32
+const Default_Defaults_F_Int64 int64 = 64
+const Default_Defaults_F_Fixed32 uint32 = 320
+const Default_Defaults_F_Fixed64 uint64 = 640
+const Default_Defaults_F_Uint32 uint32 = 3200
+const Default_Defaults_F_Uint64 uint64 = 6400
+const Default_Defaults_F_Float float32 = 314159
+const Default_Defaults_F_Double float64 = 271828
+const Default_Defaults_F_String string = "hello, \"world!\"\n"
+
+var Default_Defaults_F_Bytes []byte = []byte("Bignose")
+
+const Default_Defaults_F_Sint32 int32 = -32
+const Default_Defaults_F_Sint64 int64 = -64
+const Default_Defaults_F_Enum Defaults_Color = Defaults_GREEN
+
+var Default_Defaults_F_Pinf float32 = float32(math.Inf(1))
+var Default_Defaults_F_Ninf float32 = float32(math.Inf(-1))
+var Default_Defaults_F_Nan float32 = float32(math.NaN())
+
+func (m *Defaults) GetF_Bool() bool {
+	if m != nil && m.F_Bool != nil {
+		return *m.F_Bool
+	}
+	return Default_Defaults_F_Bool
+}
+
+func (m *Defaults) GetF_Int32() int32 {
+	if m != nil && m.F_Int32 != nil {
+		return *m.F_Int32
+	}
+	return Default_Defaults_F_Int32
+}
+
+func (m *Defaults) GetF_Int64() int64 {
+	if m != nil && m.F_Int64 != nil {
+		return *m.F_Int64
+	}
+	return Default_Defaults_F_Int64
+}
+
+func (m *Defaults) GetF_Fixed32() uint32 {
+	if m != nil && m.F_Fixed32 != nil {
+		return *m.F_Fixed32
+	}
+	return Default_Defaults_F_Fixed32
+}
+
+func (m *Defaults) GetF_Fixed64() uint64 {
+	if m != nil && m.F_Fixed64 != nil {
+		return *m.F_Fixed64
+	}
+	return Default_Defaults_F_Fixed64
+}
+
+func (m *Defaults) GetF_Uint32() uint32 {
+	if m != nil && m.F_Uint32 != nil {
+		return *m.F_Uint32
+	}
+	return Default_Defaults_F_Uint32
+}
+
+func (m *Defaults) GetF_Uint64() uint64 {
+	if m != nil && m.F_Uint64 != nil {
+		return *m.F_Uint64
+	}
+	return Default_Defaults_F_Uint64
+}
+
+func (m *Defaults) GetF_Float() float32 {
+	if m != nil && m.F_Float != nil {
+		return *m.F_Float
+	}
+	return Default_Defaults_F_Float
+}
+
+func (m *Defaults) GetF_Double() float64 {
+	if m != nil && m.F_Double != nil {
+		return *m.F_Double
+	}
+	return Default_Defaults_F_Double
+}
+
+func (m *Defaults) GetF_String() string {
+	if m != nil && m.F_String != nil {
+		return *m.F_String
+	}
+	return Default_Defaults_F_String
+}
+
+func (m *Defaults) GetF_Bytes() []byte {
+	if m != nil && m.F_Bytes != nil {
+		return m.F_Bytes
+	}
+	return append([]byte(nil), Default_Defaults_F_Bytes...)
+}
+
+func (m *Defaults) GetF_Sint32() int32 {
+	if m != nil && m.F_Sint32 != nil {
+		return *m.F_Sint32
+	}
+	return Default_Defaults_F_Sint32
+}
+
+func (m *Defaults) GetF_Sint64() int64 {
+	if m != nil && m.F_Sint64 != nil {
+		return *m.F_Sint64
+	}
+	return Default_Defaults_F_Sint64
+}
+
+func (m *Defaults) GetF_Enum() Defaults_Color {
+	if m != nil && m.F_Enum != nil {
+		return *m.F_Enum
+	}
+	return Default_Defaults_F_Enum
+}
+
+func (m *Defaults) GetF_Pinf() float32 {
+	if m != nil && m.F_Pinf != nil {
+		return *m.F_Pinf
+	}
+	return Default_Defaults_F_Pinf
+}
+
+func (m *Defaults) GetF_Ninf() float32 {
+	if m != nil && m.F_Ninf != nil {
+		return *m.F_Ninf
+	}
+	return Default_Defaults_F_Ninf
+}
+
+func (m *Defaults) GetF_Nan() float32 {
+	if m != nil && m.F_Nan != nil {
+		return *m.F_Nan
+	}
+	return Default_Defaults_F_Nan
+}
+
+func (m *Defaults) GetSub() *SubDefaults {
+	if m != nil {
+		return m.Sub
+	}
+	return nil
+}
+
+func (m *Defaults) GetStrZero() string {
+	if m != nil && m.StrZero != nil {
+		return *m.StrZero
+	}
+	return ""
+}
+
+type SubDefaults struct {
+	N                *int64 `protobuf:"varint,1,opt,name=n,def=7" json:"n,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *SubDefaults) Reset()                    { *m = SubDefaults{} }
+func (m *SubDefaults) String() string            { return proto.CompactTextString(m) }
+func (*SubDefaults) ProtoMessage()               {}
+func (*SubDefaults) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{22} }
+
+const Default_SubDefaults_N int64 = 7
+
+func (m *SubDefaults) GetN() int64 {
+	if m != nil && m.N != nil {
+		return *m.N
+	}
+	return Default_SubDefaults_N
+}
+
+type RepeatedEnum struct {
+	Color            []RepeatedEnum_Color `protobuf:"varint,1,rep,name=color,enum=testdata.RepeatedEnum_Color" json:"color,omitempty"`
+	XXX_unrecognized []byte               `json:"-"`
+}
+
+func (m *RepeatedEnum) Reset()                    { *m = RepeatedEnum{} }
+func (m *RepeatedEnum) String() string            { return proto.CompactTextString(m) }
+func (*RepeatedEnum) ProtoMessage()               {}
+func (*RepeatedEnum) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{23} }
+
+func (m *RepeatedEnum) GetColor() []RepeatedEnum_Color {
+	if m != nil {
+		return m.Color
+	}
+	return nil
+}
+
+type MoreRepeated struct {
+	Bools            []bool   `protobuf:"varint,1,rep,name=bools" json:"bools,omitempty"`
+	BoolsPacked      []bool   `protobuf:"varint,2,rep,packed,name=bools_packed,json=boolsPacked" json:"bools_packed,omitempty"`
+	Ints             []int32  `protobuf:"varint,3,rep,name=ints" json:"ints,omitempty"`
+	IntsPacked       []int32  `protobuf:"varint,4,rep,packed,name=ints_packed,json=intsPacked" json:"ints_packed,omitempty"`
+	Int64SPacked     []int64  `protobuf:"varint,7,rep,packed,name=int64s_packed,json=int64sPacked" json:"int64s_packed,omitempty"`
+	Strings          []string `protobuf:"bytes,5,rep,name=strings" json:"strings,omitempty"`
+	Fixeds           []uint32 `protobuf:"fixed32,6,rep,name=fixeds" json:"fixeds,omitempty"`
+	XXX_unrecognized []byte   `json:"-"`
+}
+
+func (m *MoreRepeated) Reset()                    { *m = MoreRepeated{} }
+func (m *MoreRepeated) String() string            { return proto.CompactTextString(m) }
+func (*MoreRepeated) ProtoMessage()               {}
+func (*MoreRepeated) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{24} }
+
+func (m *MoreRepeated) GetBools() []bool {
+	if m != nil {
+		return m.Bools
+	}
+	return nil
+}
+
+func (m *MoreRepeated) GetBoolsPacked() []bool {
+	if m != nil {
+		return m.BoolsPacked
+	}
+	return nil
+}
+
+func (m *MoreRepeated) GetInts() []int32 {
+	if m != nil {
+		return m.Ints
+	}
+	return nil
+}
+
+func (m *MoreRepeated) GetIntsPacked() []int32 {
+	if m != nil {
+		return m.IntsPacked
+	}
+	return nil
+}
+
+func (m *MoreRepeated) GetInt64SPacked() []int64 {
+	if m != nil {
+		return m.Int64SPacked
+	}
+	return nil
+}
+
+func (m *MoreRepeated) GetStrings() []string {
+	if m != nil {
+		return m.Strings
+	}
+	return nil
+}
+
+func (m *MoreRepeated) GetFixeds() []uint32 {
+	if m != nil {
+		return m.Fixeds
+	}
+	return nil
+}
+
+type GroupOld struct {
+	G                *GroupOld_G `protobuf:"group,101,opt,name=G,json=g" json:"g,omitempty"`
+	XXX_unrecognized []byte      `json:"-"`
+}
+
+func (m *GroupOld) Reset()                    { *m = GroupOld{} }
+func (m *GroupOld) String() string            { return proto.CompactTextString(m) }
+func (*GroupOld) ProtoMessage()               {}
+func (*GroupOld) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{25} }
+
+func (m *GroupOld) GetG() *GroupOld_G {
+	if m != nil {
+		return m.G
+	}
+	return nil
+}
+
+type GroupOld_G struct {
+	X                *int32 `protobuf:"varint,2,opt,name=x" json:"x,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *GroupOld_G) Reset()                    { *m = GroupOld_G{} }
+func (m *GroupOld_G) String() string            { return proto.CompactTextString(m) }
+func (*GroupOld_G) ProtoMessage()               {}
+func (*GroupOld_G) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{25, 0} }
+
+func (m *GroupOld_G) GetX() int32 {
+	if m != nil && m.X != nil {
+		return *m.X
+	}
+	return 0
+}
+
+type GroupNew struct {
+	G                *GroupNew_G `protobuf:"group,101,opt,name=G,json=g" json:"g,omitempty"`
+	XXX_unrecognized []byte      `json:"-"`
+}
+
+func (m *GroupNew) Reset()                    { *m = GroupNew{} }
+func (m *GroupNew) String() string            { return proto.CompactTextString(m) }
+func (*GroupNew) ProtoMessage()               {}
+func (*GroupNew) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{26} }
+
+func (m *GroupNew) GetG() *GroupNew_G {
+	if m != nil {
+		return m.G
+	}
+	return nil
+}
+
+type GroupNew_G struct {
+	X                *int32 `protobuf:"varint,2,opt,name=x" json:"x,omitempty"`
+	Y                *int32 `protobuf:"varint,3,opt,name=y" json:"y,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *GroupNew_G) Reset()                    { *m = GroupNew_G{} }
+func (m *GroupNew_G) String() string            { return proto.CompactTextString(m) }
+func (*GroupNew_G) ProtoMessage()               {}
+func (*GroupNew_G) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{26, 0} }
+
+func (m *GroupNew_G) GetX() int32 {
+	if m != nil && m.X != nil {
+		return *m.X
+	}
+	return 0
+}
+
+func (m *GroupNew_G) GetY() int32 {
+	if m != nil && m.Y != nil {
+		return *m.Y
+	}
+	return 0
+}
+
+type FloatingPoint struct {
+	F                *float64 `protobuf:"fixed64,1,req,name=f" json:"f,omitempty"`
+	Exact            *bool    `protobuf:"varint,2,opt,name=exact" json:"exact,omitempty"`
+	XXX_unrecognized []byte   `json:"-"`
+}
+
+func (m *FloatingPoint) Reset()                    { *m = FloatingPoint{} }
+func (m *FloatingPoint) String() string            { return proto.CompactTextString(m) }
+func (*FloatingPoint) ProtoMessage()               {}
+func (*FloatingPoint) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{27} }
+
+func (m *FloatingPoint) GetF() float64 {
+	if m != nil && m.F != nil {
+		return *m.F
+	}
+	return 0
+}
+
+func (m *FloatingPoint) GetExact() bool {
+	if m != nil && m.Exact != nil {
+		return *m.Exact
+	}
+	return false
+}
+
+type MessageWithMap struct {
+	NameMapping      map[int32]string         `protobuf:"bytes,1,rep,name=name_mapping,json=nameMapping" json:"name_mapping,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	MsgMapping       map[int64]*FloatingPoint `protobuf:"bytes,2,rep,name=msg_mapping,json=msgMapping" json:"msg_mapping,omitempty" protobuf_key:"zigzag64,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	ByteMapping      map[bool][]byte          `protobuf:"bytes,3,rep,name=byte_mapping,json=byteMapping" json:"byte_mapping,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	StrToStr         map[string]string        `protobuf:"bytes,4,rep,name=str_to_str,json=strToStr" json:"str_to_str,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	XXX_unrecognized []byte                   `json:"-"`
+}
+
+func (m *MessageWithMap) Reset()                    { *m = MessageWithMap{} }
+func (m *MessageWithMap) String() string            { return proto.CompactTextString(m) }
+func (*MessageWithMap) ProtoMessage()               {}
+func (*MessageWithMap) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{28} }
+
+func (m *MessageWithMap) GetNameMapping() map[int32]string {
+	if m != nil {
+		return m.NameMapping
+	}
+	return nil
+}
+
+func (m *MessageWithMap) GetMsgMapping() map[int64]*FloatingPoint {
+	if m != nil {
+		return m.MsgMapping
+	}
+	return nil
+}
+
+func (m *MessageWithMap) GetByteMapping() map[bool][]byte {
+	if m != nil {
+		return m.ByteMapping
+	}
+	return nil
+}
+
+func (m *MessageWithMap) GetStrToStr() map[string]string {
+	if m != nil {
+		return m.StrToStr
+	}
+	return nil
+}
+
+type Oneof struct {
+	// Types that are valid to be assigned to Union:
+	//	*Oneof_F_Bool
+	//	*Oneof_F_Int32
+	//	*Oneof_F_Int64
+	//	*Oneof_F_Fixed32
+	//	*Oneof_F_Fixed64
+	//	*Oneof_F_Uint32
+	//	*Oneof_F_Uint64
+	//	*Oneof_F_Float
+	//	*Oneof_F_Double
+	//	*Oneof_F_String
+	//	*Oneof_F_Bytes
+	//	*Oneof_F_Sint32
+	//	*Oneof_F_Sint64
+	//	*Oneof_F_Enum
+	//	*Oneof_F_Message
+	//	*Oneof_FGroup
+	//	*Oneof_F_Largest_Tag
+	Union isOneof_Union `protobuf_oneof:"union"`
+	// Types that are valid to be assigned to Tormato:
+	//	*Oneof_Value
+	Tormato          isOneof_Tormato `protobuf_oneof:"tormato"`
+	XXX_unrecognized []byte          `json:"-"`
+}
+
+func (m *Oneof) Reset()                    { *m = Oneof{} }
+func (m *Oneof) String() string            { return proto.CompactTextString(m) }
+func (*Oneof) ProtoMessage()               {}
+func (*Oneof) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{29} }
+
+type isOneof_Union interface {
+	isOneof_Union()
+}
+type isOneof_Tormato interface {
+	isOneof_Tormato()
+}
+
+type Oneof_F_Bool struct {
+	F_Bool bool `protobuf:"varint,1,opt,name=F_Bool,json=FBool,oneof"`
+}
+type Oneof_F_Int32 struct {
+	F_Int32 int32 `protobuf:"varint,2,opt,name=F_Int32,json=FInt32,oneof"`
+}
+type Oneof_F_Int64 struct {
+	F_Int64 int64 `protobuf:"varint,3,opt,name=F_Int64,json=FInt64,oneof"`
+}
+type Oneof_F_Fixed32 struct {
+	F_Fixed32 uint32 `protobuf:"fixed32,4,opt,name=F_Fixed32,json=FFixed32,oneof"`
+}
+type Oneof_F_Fixed64 struct {
+	F_Fixed64 uint64 `protobuf:"fixed64,5,opt,name=F_Fixed64,json=FFixed64,oneof"`
+}
+type Oneof_F_Uint32 struct {
+	F_Uint32 uint32 `protobuf:"varint,6,opt,name=F_Uint32,json=FUint32,oneof"`
+}
+type Oneof_F_Uint64 struct {
+	F_Uint64 uint64 `protobuf:"varint,7,opt,name=F_Uint64,json=FUint64,oneof"`
+}
+type Oneof_F_Float struct {
+	F_Float float32 `protobuf:"fixed32,8,opt,name=F_Float,json=FFloat,oneof"`
+}
+type Oneof_F_Double struct {
+	F_Double float64 `protobuf:"fixed64,9,opt,name=F_Double,json=FDouble,oneof"`
+}
+type Oneof_F_String struct {
+	F_String string `protobuf:"bytes,10,opt,name=F_String,json=FString,oneof"`
+}
+type Oneof_F_Bytes struct {
+	F_Bytes []byte `protobuf:"bytes,11,opt,name=F_Bytes,json=FBytes,oneof"`
+}
+type Oneof_F_Sint32 struct {
+	F_Sint32 int32 `protobuf:"zigzag32,12,opt,name=F_Sint32,json=FSint32,oneof"`
+}
+type Oneof_F_Sint64 struct {
+	F_Sint64 int64 `protobuf:"zigzag64,13,opt,name=F_Sint64,json=FSint64,oneof"`
+}
+type Oneof_F_Enum struct {
+	F_Enum MyMessage_Color `protobuf:"varint,14,opt,name=F_Enum,json=FEnum,enum=testdata.MyMessage_Color,oneof"`
+}
+type Oneof_F_Message struct {
+	F_Message *GoTestField `protobuf:"bytes,15,opt,name=F_Message,json=FMessage,oneof"`
+}
+type Oneof_FGroup struct {
+	FGroup *Oneof_F_Group `protobuf:"group,16,opt,name=F_Group,json=fGroup,oneof"`
+}
+type Oneof_F_Largest_Tag struct {
+	F_Largest_Tag int32 `protobuf:"varint,536870911,opt,name=F_Largest_Tag,json=FLargestTag,oneof"`
+}
+type Oneof_Value struct {
+	Value int32 `protobuf:"varint,100,opt,name=value,oneof"`
+}
+
+func (*Oneof_F_Bool) isOneof_Union()        {}
+func (*Oneof_F_Int32) isOneof_Union()       {}
+func (*Oneof_F_Int64) isOneof_Union()       {}
+func (*Oneof_F_Fixed32) isOneof_Union()     {}
+func (*Oneof_F_Fixed64) isOneof_Union()     {}
+func (*Oneof_F_Uint32) isOneof_Union()      {}
+func (*Oneof_F_Uint64) isOneof_Union()      {}
+func (*Oneof_F_Float) isOneof_Union()       {}
+func (*Oneof_F_Double) isOneof_Union()      {}
+func (*Oneof_F_String) isOneof_Union()      {}
+func (*Oneof_F_Bytes) isOneof_Union()       {}
+func (*Oneof_F_Sint32) isOneof_Union()      {}
+func (*Oneof_F_Sint64) isOneof_Union()      {}
+func (*Oneof_F_Enum) isOneof_Union()        {}
+func (*Oneof_F_Message) isOneof_Union()     {}
+func (*Oneof_FGroup) isOneof_Union()        {}
+func (*Oneof_F_Largest_Tag) isOneof_Union() {}
+func (*Oneof_Value) isOneof_Tormato()       {}
+
+func (m *Oneof) GetUnion() isOneof_Union {
+	if m != nil {
+		return m.Union
+	}
+	return nil
+}
+func (m *Oneof) GetTormato() isOneof_Tormato {
+	if m != nil {
+		return m.Tormato
+	}
+	return nil
+}
+
+func (m *Oneof) GetF_Bool() bool {
+	if x, ok := m.GetUnion().(*Oneof_F_Bool); ok {
+		return x.F_Bool
+	}
+	return false
+}
+
+func (m *Oneof) GetF_Int32() int32 {
+	if x, ok := m.GetUnion().(*Oneof_F_Int32); ok {
+		return x.F_Int32
+	}
+	return 0
+}
+
+func (m *Oneof) GetF_Int64() int64 {
+	if x, ok := m.GetUnion().(*Oneof_F_Int64); ok {
+		return x.F_Int64
+	}
+	return 0
+}
+
+func (m *Oneof) GetF_Fixed32() uint32 {
+	if x, ok := m.GetUnion().(*Oneof_F_Fixed32); ok {
+		return x.F_Fixed32
+	}
+	return 0
+}
+
+func (m *Oneof) GetF_Fixed64() uint64 {
+	if x, ok := m.GetUnion().(*Oneof_F_Fixed64); ok {
+		return x.F_Fixed64
+	}
+	return 0
+}
+
+func (m *Oneof) GetF_Uint32() uint32 {
+	if x, ok := m.GetUnion().(*Oneof_F_Uint32); ok {
+		return x.F_Uint32
+	}
+	return 0
+}
+
+func (m *Oneof) GetF_Uint64() uint64 {
+	if x, ok := m.GetUnion().(*Oneof_F_Uint64); ok {
+		return x.F_Uint64
+	}
+	return 0
+}
+
+func (m *Oneof) GetF_Float() float32 {
+	if x, ok := m.GetUnion().(*Oneof_F_Float); ok {
+		return x.F_Float
+	}
+	return 0
+}
+
+func (m *Oneof) GetF_Double() float64 {
+	if x, ok := m.GetUnion().(*Oneof_F_Double); ok {
+		return x.F_Double
+	}
+	return 0
+}
+
+func (m *Oneof) GetF_String() string {
+	if x, ok := m.GetUnion().(*Oneof_F_String); ok {
+		return x.F_String
+	}
+	return ""
+}
+
+func (m *Oneof) GetF_Bytes() []byte {
+	if x, ok := m.GetUnion().(*Oneof_F_Bytes); ok {
+		return x.F_Bytes
+	}
+	return nil
+}
+
+func (m *Oneof) GetF_Sint32() int32 {
+	if x, ok := m.GetUnion().(*Oneof_F_Sint32); ok {
+		return x.F_Sint32
+	}
+	return 0
+}
+
+func (m *Oneof) GetF_Sint64() int64 {
+	if x, ok := m.GetUnion().(*Oneof_F_Sint64); ok {
+		return x.F_Sint64
+	}
+	return 0
+}
+
+func (m *Oneof) GetF_Enum() MyMessage_Color {
+	if x, ok := m.GetUnion().(*Oneof_F_Enum); ok {
+		return x.F_Enum
+	}
+	return MyMessage_RED
+}
+
+func (m *Oneof) GetF_Message() *GoTestField {
+	if x, ok := m.GetUnion().(*Oneof_F_Message); ok {
+		return x.F_Message
+	}
+	return nil
+}
+
+func (m *Oneof) GetFGroup() *Oneof_F_Group {
+	if x, ok := m.GetUnion().(*Oneof_FGroup); ok {
+		return x.FGroup
+	}
+	return nil
+}
+
+func (m *Oneof) GetF_Largest_Tag() int32 {
+	if x, ok := m.GetUnion().(*Oneof_F_Largest_Tag); ok {
+		return x.F_Largest_Tag
+	}
+	return 0
+}
+
+func (m *Oneof) GetValue() int32 {
+	if x, ok := m.GetTormato().(*Oneof_Value); ok {
+		return x.Value
+	}
+	return 0
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*Oneof) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _Oneof_OneofMarshaler, _Oneof_OneofUnmarshaler, _Oneof_OneofSizer, []interface{}{
+		(*Oneof_F_Bool)(nil),
+		(*Oneof_F_Int32)(nil),
+		(*Oneof_F_Int64)(nil),
+		(*Oneof_F_Fixed32)(nil),
+		(*Oneof_F_Fixed64)(nil),
+		(*Oneof_F_Uint32)(nil),
+		(*Oneof_F_Uint64)(nil),
+		(*Oneof_F_Float)(nil),
+		(*Oneof_F_Double)(nil),
+		(*Oneof_F_String)(nil),
+		(*Oneof_F_Bytes)(nil),
+		(*Oneof_F_Sint32)(nil),
+		(*Oneof_F_Sint64)(nil),
+		(*Oneof_F_Enum)(nil),
+		(*Oneof_F_Message)(nil),
+		(*Oneof_FGroup)(nil),
+		(*Oneof_F_Largest_Tag)(nil),
+		(*Oneof_Value)(nil),
+	}
+}
+
+func _Oneof_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*Oneof)
+	// union
+	switch x := m.Union.(type) {
+	case *Oneof_F_Bool:
+		t := uint64(0)
+		if x.F_Bool {
+			t = 1
+		}
+		b.EncodeVarint(1<<3 | proto.WireVarint)
+		b.EncodeVarint(t)
+	case *Oneof_F_Int32:
+		b.EncodeVarint(2<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.F_Int32))
+	case *Oneof_F_Int64:
+		b.EncodeVarint(3<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.F_Int64))
+	case *Oneof_F_Fixed32:
+		b.EncodeVarint(4<<3 | proto.WireFixed32)
+		b.EncodeFixed32(uint64(x.F_Fixed32))
+	case *Oneof_F_Fixed64:
+		b.EncodeVarint(5<<3 | proto.WireFixed64)
+		b.EncodeFixed64(uint64(x.F_Fixed64))
+	case *Oneof_F_Uint32:
+		b.EncodeVarint(6<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.F_Uint32))
+	case *Oneof_F_Uint64:
+		b.EncodeVarint(7<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.F_Uint64))
+	case *Oneof_F_Float:
+		b.EncodeVarint(8<<3 | proto.WireFixed32)
+		b.EncodeFixed32(uint64(math.Float32bits(x.F_Float)))
+	case *Oneof_F_Double:
+		b.EncodeVarint(9<<3 | proto.WireFixed64)
+		b.EncodeFixed64(math.Float64bits(x.F_Double))
+	case *Oneof_F_String:
+		b.EncodeVarint(10<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.F_String)
+	case *Oneof_F_Bytes:
+		b.EncodeVarint(11<<3 | proto.WireBytes)
+		b.EncodeRawBytes(x.F_Bytes)
+	case *Oneof_F_Sint32:
+		b.EncodeVarint(12<<3 | proto.WireVarint)
+		b.EncodeZigzag32(uint64(x.F_Sint32))
+	case *Oneof_F_Sint64:
+		b.EncodeVarint(13<<3 | proto.WireVarint)
+		b.EncodeZigzag64(uint64(x.F_Sint64))
+	case *Oneof_F_Enum:
+		b.EncodeVarint(14<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.F_Enum))
+	case *Oneof_F_Message:
+		b.EncodeVarint(15<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.F_Message); err != nil {
+			return err
+		}
+	case *Oneof_FGroup:
+		b.EncodeVarint(16<<3 | proto.WireStartGroup)
+		if err := b.Marshal(x.FGroup); err != nil {
+			return err
+		}
+		b.EncodeVarint(16<<3 | proto.WireEndGroup)
+	case *Oneof_F_Largest_Tag:
+		b.EncodeVarint(536870911<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.F_Largest_Tag))
+	case nil:
+	default:
+		return fmt.Errorf("Oneof.Union has unexpected type %T", x)
+	}
+	// tormato
+	switch x := m.Tormato.(type) {
+	case *Oneof_Value:
+		b.EncodeVarint(100<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.Value))
+	case nil:
+	default:
+		return fmt.Errorf("Oneof.Tormato has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _Oneof_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*Oneof)
+	switch tag {
+	case 1: // union.F_Bool
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Oneof_F_Bool{x != 0}
+		return true, err
+	case 2: // union.F_Int32
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Oneof_F_Int32{int32(x)}
+		return true, err
+	case 3: // union.F_Int64
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Oneof_F_Int64{int64(x)}
+		return true, err
+	case 4: // union.F_Fixed32
+		if wire != proto.WireFixed32 {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeFixed32()
+		m.Union = &Oneof_F_Fixed32{uint32(x)}
+		return true, err
+	case 5: // union.F_Fixed64
+		if wire != proto.WireFixed64 {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeFixed64()
+		m.Union = &Oneof_F_Fixed64{x}
+		return true, err
+	case 6: // union.F_Uint32
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Oneof_F_Uint32{uint32(x)}
+		return true, err
+	case 7: // union.F_Uint64
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Oneof_F_Uint64{x}
+		return true, err
+	case 8: // union.F_Float
+		if wire != proto.WireFixed32 {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeFixed32()
+		m.Union = &Oneof_F_Float{math.Float32frombits(uint32(x))}
+		return true, err
+	case 9: // union.F_Double
+		if wire != proto.WireFixed64 {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeFixed64()
+		m.Union = &Oneof_F_Double{math.Float64frombits(x)}
+		return true, err
+	case 10: // union.F_String
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Union = &Oneof_F_String{x}
+		return true, err
+	case 11: // union.F_Bytes
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeRawBytes(true)
+		m.Union = &Oneof_F_Bytes{x}
+		return true, err
+	case 12: // union.F_Sint32
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeZigzag32()
+		m.Union = &Oneof_F_Sint32{int32(x)}
+		return true, err
+	case 13: // union.F_Sint64
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeZigzag64()
+		m.Union = &Oneof_F_Sint64{int64(x)}
+		return true, err
+	case 14: // union.F_Enum
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Oneof_F_Enum{MyMessage_Color(x)}
+		return true, err
+	case 15: // union.F_Message
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(GoTestField)
+		err := b.DecodeMessage(msg)
+		m.Union = &Oneof_F_Message{msg}
+		return true, err
+	case 16: // union.f_group
+		if wire != proto.WireStartGroup {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(Oneof_F_Group)
+		err := b.DecodeGroup(msg)
+		m.Union = &Oneof_FGroup{msg}
+		return true, err
+	case 536870911: // union.F_Largest_Tag
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Oneof_F_Largest_Tag{int32(x)}
+		return true, err
+	case 100: // tormato.value
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Tormato = &Oneof_Value{int32(x)}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _Oneof_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*Oneof)
+	// union
+	switch x := m.Union.(type) {
+	case *Oneof_F_Bool:
+		n += proto.SizeVarint(1<<3 | proto.WireVarint)
+		n += 1
+	case *Oneof_F_Int32:
+		n += proto.SizeVarint(2<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.F_Int32))
+	case *Oneof_F_Int64:
+		n += proto.SizeVarint(3<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.F_Int64))
+	case *Oneof_F_Fixed32:
+		n += proto.SizeVarint(4<<3 | proto.WireFixed32)
+		n += 4
+	case *Oneof_F_Fixed64:
+		n += proto.SizeVarint(5<<3 | proto.WireFixed64)
+		n += 8
+	case *Oneof_F_Uint32:
+		n += proto.SizeVarint(6<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.F_Uint32))
+	case *Oneof_F_Uint64:
+		n += proto.SizeVarint(7<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.F_Uint64))
+	case *Oneof_F_Float:
+		n += proto.SizeVarint(8<<3 | proto.WireFixed32)
+		n += 4
+	case *Oneof_F_Double:
+		n += proto.SizeVarint(9<<3 | proto.WireFixed64)
+		n += 8
+	case *Oneof_F_String:
+		n += proto.SizeVarint(10<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.F_String)))
+		n += len(x.F_String)
+	case *Oneof_F_Bytes:
+		n += proto.SizeVarint(11<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.F_Bytes)))
+		n += len(x.F_Bytes)
+	case *Oneof_F_Sint32:
+		n += proto.SizeVarint(12<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64((uint32(x.F_Sint32) << 1) ^ uint32((int32(x.F_Sint32) >> 31))))
+	case *Oneof_F_Sint64:
+		n += proto.SizeVarint(13<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(uint64(x.F_Sint64<<1) ^ uint64((int64(x.F_Sint64) >> 63))))
+	case *Oneof_F_Enum:
+		n += proto.SizeVarint(14<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.F_Enum))
+	case *Oneof_F_Message:
+		s := proto.Size(x.F_Message)
+		n += proto.SizeVarint(15<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case *Oneof_FGroup:
+		n += proto.SizeVarint(16<<3 | proto.WireStartGroup)
+		n += proto.Size(x.FGroup)
+		n += proto.SizeVarint(16<<3 | proto.WireEndGroup)
+	case *Oneof_F_Largest_Tag:
+		n += proto.SizeVarint(536870911<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.F_Largest_Tag))
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	// tormato
+	switch x := m.Tormato.(type) {
+	case *Oneof_Value:
+		n += proto.SizeVarint(100<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.Value))
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+type Oneof_F_Group struct {
+	X                *int32 `protobuf:"varint,17,opt,name=x" json:"x,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *Oneof_F_Group) Reset()                    { *m = Oneof_F_Group{} }
+func (m *Oneof_F_Group) String() string            { return proto.CompactTextString(m) }
+func (*Oneof_F_Group) ProtoMessage()               {}
+func (*Oneof_F_Group) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{29, 0} }
+
+func (m *Oneof_F_Group) GetX() int32 {
+	if m != nil && m.X != nil {
+		return *m.X
+	}
+	return 0
+}
+
+type Communique struct {
+	MakeMeCry *bool `protobuf:"varint,1,opt,name=make_me_cry,json=makeMeCry" json:"make_me_cry,omitempty"`
+	// This is a oneof, called "union".
+	//
+	// Types that are valid to be assigned to Union:
+	//	*Communique_Number
+	//	*Communique_Name
+	//	*Communique_Data
+	//	*Communique_TempC
+	//	*Communique_Col
+	//	*Communique_Msg
+	Union            isCommunique_Union `protobuf_oneof:"union"`
+	XXX_unrecognized []byte             `json:"-"`
+}
+
+func (m *Communique) Reset()                    { *m = Communique{} }
+func (m *Communique) String() string            { return proto.CompactTextString(m) }
+func (*Communique) ProtoMessage()               {}
+func (*Communique) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{30} }
+
+type isCommunique_Union interface {
+	isCommunique_Union()
+}
+
+type Communique_Number struct {
+	Number int32 `protobuf:"varint,5,opt,name=number,oneof"`
+}
+type Communique_Name struct {
+	Name string `protobuf:"bytes,6,opt,name=name,oneof"`
+}
+type Communique_Data struct {
+	Data []byte `protobuf:"bytes,7,opt,name=data,oneof"`
+}
+type Communique_TempC struct {
+	TempC float64 `protobuf:"fixed64,8,opt,name=temp_c,json=tempC,oneof"`
+}
+type Communique_Col struct {
+	Col MyMessage_Color `protobuf:"varint,9,opt,name=col,enum=testdata.MyMessage_Color,oneof"`
+}
+type Communique_Msg struct {
+	Msg *Strings `protobuf:"bytes,10,opt,name=msg,oneof"`
+}
+
+func (*Communique_Number) isCommunique_Union() {}
+func (*Communique_Name) isCommunique_Union()   {}
+func (*Communique_Data) isCommunique_Union()   {}
+func (*Communique_TempC) isCommunique_Union()  {}
+func (*Communique_Col) isCommunique_Union()    {}
+func (*Communique_Msg) isCommunique_Union()    {}
+
+func (m *Communique) GetUnion() isCommunique_Union {
+	if m != nil {
+		return m.Union
+	}
+	return nil
+}
+
+func (m *Communique) GetMakeMeCry() bool {
+	if m != nil && m.MakeMeCry != nil {
+		return *m.MakeMeCry
+	}
+	return false
+}
+
+func (m *Communique) GetNumber() int32 {
+	if x, ok := m.GetUnion().(*Communique_Number); ok {
+		return x.Number
+	}
+	return 0
+}
+
+func (m *Communique) GetName() string {
+	if x, ok := m.GetUnion().(*Communique_Name); ok {
+		return x.Name
+	}
+	return ""
+}
+
+func (m *Communique) GetData() []byte {
+	if x, ok := m.GetUnion().(*Communique_Data); ok {
+		return x.Data
+	}
+	return nil
+}
+
+func (m *Communique) GetTempC() float64 {
+	if x, ok := m.GetUnion().(*Communique_TempC); ok {
+		return x.TempC
+	}
+	return 0
+}
+
+func (m *Communique) GetCol() MyMessage_Color {
+	if x, ok := m.GetUnion().(*Communique_Col); ok {
+		return x.Col
+	}
+	return MyMessage_RED
+}
+
+func (m *Communique) GetMsg() *Strings {
+	if x, ok := m.GetUnion().(*Communique_Msg); ok {
+		return x.Msg
+	}
+	return nil
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*Communique) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _Communique_OneofMarshaler, _Communique_OneofUnmarshaler, _Communique_OneofSizer, []interface{}{
+		(*Communique_Number)(nil),
+		(*Communique_Name)(nil),
+		(*Communique_Data)(nil),
+		(*Communique_TempC)(nil),
+		(*Communique_Col)(nil),
+		(*Communique_Msg)(nil),
+	}
+}
+
+func _Communique_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*Communique)
+	// union
+	switch x := m.Union.(type) {
+	case *Communique_Number:
+		b.EncodeVarint(5<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.Number))
+	case *Communique_Name:
+		b.EncodeVarint(6<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.Name)
+	case *Communique_Data:
+		b.EncodeVarint(7<<3 | proto.WireBytes)
+		b.EncodeRawBytes(x.Data)
+	case *Communique_TempC:
+		b.EncodeVarint(8<<3 | proto.WireFixed64)
+		b.EncodeFixed64(math.Float64bits(x.TempC))
+	case *Communique_Col:
+		b.EncodeVarint(9<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.Col))
+	case *Communique_Msg:
+		b.EncodeVarint(10<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.Msg); err != nil {
+			return err
+		}
+	case nil:
+	default:
+		return fmt.Errorf("Communique.Union has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _Communique_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*Communique)
+	switch tag {
+	case 5: // union.number
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Communique_Number{int32(x)}
+		return true, err
+	case 6: // union.name
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Union = &Communique_Name{x}
+		return true, err
+	case 7: // union.data
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeRawBytes(true)
+		m.Union = &Communique_Data{x}
+		return true, err
+	case 8: // union.temp_c
+		if wire != proto.WireFixed64 {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeFixed64()
+		m.Union = &Communique_TempC{math.Float64frombits(x)}
+		return true, err
+	case 9: // union.col
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Communique_Col{MyMessage_Color(x)}
+		return true, err
+	case 10: // union.msg
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(Strings)
+		err := b.DecodeMessage(msg)
+		m.Union = &Communique_Msg{msg}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _Communique_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*Communique)
+	// union
+	switch x := m.Union.(type) {
+	case *Communique_Number:
+		n += proto.SizeVarint(5<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.Number))
+	case *Communique_Name:
+		n += proto.SizeVarint(6<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.Name)))
+		n += len(x.Name)
+	case *Communique_Data:
+		n += proto.SizeVarint(7<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.Data)))
+		n += len(x.Data)
+	case *Communique_TempC:
+		n += proto.SizeVarint(8<<3 | proto.WireFixed64)
+		n += 8
+	case *Communique_Col:
+		n += proto.SizeVarint(9<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.Col))
+	case *Communique_Msg:
+		s := proto.Size(x.Msg)
+		n += proto.SizeVarint(10<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+var E_Greeting = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessage)(nil),
+	ExtensionType: ([]string)(nil),
+	Field:         106,
+	Name:          "testdata.greeting",
+	Tag:           "bytes,106,rep,name=greeting",
+	Filename:      "test.proto",
+}
+
+var E_Complex = &proto.ExtensionDesc{
+	ExtendedType:  (*OtherMessage)(nil),
+	ExtensionType: (*ComplexExtension)(nil),
+	Field:         200,
+	Name:          "testdata.complex",
+	Tag:           "bytes,200,opt,name=complex",
+	Filename:      "test.proto",
+}
+
+var E_RComplex = &proto.ExtensionDesc{
+	ExtendedType:  (*OtherMessage)(nil),
+	ExtensionType: ([]*ComplexExtension)(nil),
+	Field:         201,
+	Name:          "testdata.r_complex",
+	Tag:           "bytes,201,rep,name=r_complex,json=rComplex",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultDouble = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*float64)(nil),
+	Field:         101,
+	Name:          "testdata.no_default_double",
+	Tag:           "fixed64,101,opt,name=no_default_double,json=noDefaultDouble",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultFloat = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*float32)(nil),
+	Field:         102,
+	Name:          "testdata.no_default_float",
+	Tag:           "fixed32,102,opt,name=no_default_float,json=noDefaultFloat",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultInt32 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*int32)(nil),
+	Field:         103,
+	Name:          "testdata.no_default_int32",
+	Tag:           "varint,103,opt,name=no_default_int32,json=noDefaultInt32",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultInt64 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*int64)(nil),
+	Field:         104,
+	Name:          "testdata.no_default_int64",
+	Tag:           "varint,104,opt,name=no_default_int64,json=noDefaultInt64",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultUint32 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*uint32)(nil),
+	Field:         105,
+	Name:          "testdata.no_default_uint32",
+	Tag:           "varint,105,opt,name=no_default_uint32,json=noDefaultUint32",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultUint64 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*uint64)(nil),
+	Field:         106,
+	Name:          "testdata.no_default_uint64",
+	Tag:           "varint,106,opt,name=no_default_uint64,json=noDefaultUint64",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultSint32 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*int32)(nil),
+	Field:         107,
+	Name:          "testdata.no_default_sint32",
+	Tag:           "zigzag32,107,opt,name=no_default_sint32,json=noDefaultSint32",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultSint64 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*int64)(nil),
+	Field:         108,
+	Name:          "testdata.no_default_sint64",
+	Tag:           "zigzag64,108,opt,name=no_default_sint64,json=noDefaultSint64",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultFixed32 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*uint32)(nil),
+	Field:         109,
+	Name:          "testdata.no_default_fixed32",
+	Tag:           "fixed32,109,opt,name=no_default_fixed32,json=noDefaultFixed32",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultFixed64 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*uint64)(nil),
+	Field:         110,
+	Name:          "testdata.no_default_fixed64",
+	Tag:           "fixed64,110,opt,name=no_default_fixed64,json=noDefaultFixed64",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultSfixed32 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*int32)(nil),
+	Field:         111,
+	Name:          "testdata.no_default_sfixed32",
+	Tag:           "fixed32,111,opt,name=no_default_sfixed32,json=noDefaultSfixed32",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultSfixed64 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*int64)(nil),
+	Field:         112,
+	Name:          "testdata.no_default_sfixed64",
+	Tag:           "fixed64,112,opt,name=no_default_sfixed64,json=noDefaultSfixed64",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultBool = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         113,
+	Name:          "testdata.no_default_bool",
+	Tag:           "varint,113,opt,name=no_default_bool,json=noDefaultBool",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultString = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         114,
+	Name:          "testdata.no_default_string",
+	Tag:           "bytes,114,opt,name=no_default_string,json=noDefaultString",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultBytes = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: ([]byte)(nil),
+	Field:         115,
+	Name:          "testdata.no_default_bytes",
+	Tag:           "bytes,115,opt,name=no_default_bytes,json=noDefaultBytes",
+	Filename:      "test.proto",
+}
+
+var E_NoDefaultEnum = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*DefaultsMessage_DefaultsEnum)(nil),
+	Field:         116,
+	Name:          "testdata.no_default_enum",
+	Tag:           "varint,116,opt,name=no_default_enum,json=noDefaultEnum,enum=testdata.DefaultsMessage_DefaultsEnum",
+	Filename:      "test.proto",
+}
+
+var E_DefaultDouble = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*float64)(nil),
+	Field:         201,
+	Name:          "testdata.default_double",
+	Tag:           "fixed64,201,opt,name=default_double,json=defaultDouble,def=3.1415",
+	Filename:      "test.proto",
+}
+
+var E_DefaultFloat = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*float32)(nil),
+	Field:         202,
+	Name:          "testdata.default_float",
+	Tag:           "fixed32,202,opt,name=default_float,json=defaultFloat,def=3.14",
+	Filename:      "test.proto",
+}
+
+var E_DefaultInt32 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*int32)(nil),
+	Field:         203,
+	Name:          "testdata.default_int32",
+	Tag:           "varint,203,opt,name=default_int32,json=defaultInt32,def=42",
+	Filename:      "test.proto",
+}
+
+var E_DefaultInt64 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*int64)(nil),
+	Field:         204,
+	Name:          "testdata.default_int64",
+	Tag:           "varint,204,opt,name=default_int64,json=defaultInt64,def=43",
+	Filename:      "test.proto",
+}
+
+var E_DefaultUint32 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*uint32)(nil),
+	Field:         205,
+	Name:          "testdata.default_uint32",
+	Tag:           "varint,205,opt,name=default_uint32,json=defaultUint32,def=44",
+	Filename:      "test.proto",
+}
+
+var E_DefaultUint64 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*uint64)(nil),
+	Field:         206,
+	Name:          "testdata.default_uint64",
+	Tag:           "varint,206,opt,name=default_uint64,json=defaultUint64,def=45",
+	Filename:      "test.proto",
+}
+
+var E_DefaultSint32 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*int32)(nil),
+	Field:         207,
+	Name:          "testdata.default_sint32",
+	Tag:           "zigzag32,207,opt,name=default_sint32,json=defaultSint32,def=46",
+	Filename:      "test.proto",
+}
+
+var E_DefaultSint64 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*int64)(nil),
+	Field:         208,
+	Name:          "testdata.default_sint64",
+	Tag:           "zigzag64,208,opt,name=default_sint64,json=defaultSint64,def=47",
+	Filename:      "test.proto",
+}
+
+var E_DefaultFixed32 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*uint32)(nil),
+	Field:         209,
+	Name:          "testdata.default_fixed32",
+	Tag:           "fixed32,209,opt,name=default_fixed32,json=defaultFixed32,def=48",
+	Filename:      "test.proto",
+}
+
+var E_DefaultFixed64 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*uint64)(nil),
+	Field:         210,
+	Name:          "testdata.default_fixed64",
+	Tag:           "fixed64,210,opt,name=default_fixed64,json=defaultFixed64,def=49",
+	Filename:      "test.proto",
+}
+
+var E_DefaultSfixed32 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*int32)(nil),
+	Field:         211,
+	Name:          "testdata.default_sfixed32",
+	Tag:           "fixed32,211,opt,name=default_sfixed32,json=defaultSfixed32,def=50",
+	Filename:      "test.proto",
+}
+
+var E_DefaultSfixed64 = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*int64)(nil),
+	Field:         212,
+	Name:          "testdata.default_sfixed64",
+	Tag:           "fixed64,212,opt,name=default_sfixed64,json=defaultSfixed64,def=51",
+	Filename:      "test.proto",
+}
+
+var E_DefaultBool = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         213,
+	Name:          "testdata.default_bool",
+	Tag:           "varint,213,opt,name=default_bool,json=defaultBool,def=1",
+	Filename:      "test.proto",
+}
+
+var E_DefaultString = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         214,
+	Name:          "testdata.default_string",
+	Tag:           "bytes,214,opt,name=default_string,json=defaultString,def=Hello, string",
+	Filename:      "test.proto",
+}
+
+var E_DefaultBytes = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: ([]byte)(nil),
+	Field:         215,
+	Name:          "testdata.default_bytes",
+	Tag:           "bytes,215,opt,name=default_bytes,json=defaultBytes,def=Hello, bytes",
+	Filename:      "test.proto",
+}
+
+var E_DefaultEnum = &proto.ExtensionDesc{
+	ExtendedType:  (*DefaultsMessage)(nil),
+	ExtensionType: (*DefaultsMessage_DefaultsEnum)(nil),
+	Field:         216,
+	Name:          "testdata.default_enum",
+	Tag:           "varint,216,opt,name=default_enum,json=defaultEnum,enum=testdata.DefaultsMessage_DefaultsEnum,def=1",
+	Filename:      "test.proto",
+}
+
+var E_X201 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         201,
+	Name:          "testdata.x201",
+	Tag:           "bytes,201,opt,name=x201",
+	Filename:      "test.proto",
+}
+
+var E_X202 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         202,
+	Name:          "testdata.x202",
+	Tag:           "bytes,202,opt,name=x202",
+	Filename:      "test.proto",
+}
+
+var E_X203 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         203,
+	Name:          "testdata.x203",
+	Tag:           "bytes,203,opt,name=x203",
+	Filename:      "test.proto",
+}
+
+var E_X204 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         204,
+	Name:          "testdata.x204",
+	Tag:           "bytes,204,opt,name=x204",
+	Filename:      "test.proto",
+}
+
+var E_X205 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         205,
+	Name:          "testdata.x205",
+	Tag:           "bytes,205,opt,name=x205",
+	Filename:      "test.proto",
+}
+
+var E_X206 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         206,
+	Name:          "testdata.x206",
+	Tag:           "bytes,206,opt,name=x206",
+	Filename:      "test.proto",
+}
+
+var E_X207 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         207,
+	Name:          "testdata.x207",
+	Tag:           "bytes,207,opt,name=x207",
+	Filename:      "test.proto",
+}
+
+var E_X208 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         208,
+	Name:          "testdata.x208",
+	Tag:           "bytes,208,opt,name=x208",
+	Filename:      "test.proto",
+}
+
+var E_X209 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         209,
+	Name:          "testdata.x209",
+	Tag:           "bytes,209,opt,name=x209",
+	Filename:      "test.proto",
+}
+
+var E_X210 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         210,
+	Name:          "testdata.x210",
+	Tag:           "bytes,210,opt,name=x210",
+	Filename:      "test.proto",
+}
+
+var E_X211 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         211,
+	Name:          "testdata.x211",
+	Tag:           "bytes,211,opt,name=x211",
+	Filename:      "test.proto",
+}
+
+var E_X212 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         212,
+	Name:          "testdata.x212",
+	Tag:           "bytes,212,opt,name=x212",
+	Filename:      "test.proto",
+}
+
+var E_X213 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         213,
+	Name:          "testdata.x213",
+	Tag:           "bytes,213,opt,name=x213",
+	Filename:      "test.proto",
+}
+
+var E_X214 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         214,
+	Name:          "testdata.x214",
+	Tag:           "bytes,214,opt,name=x214",
+	Filename:      "test.proto",
+}
+
+var E_X215 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         215,
+	Name:          "testdata.x215",
+	Tag:           "bytes,215,opt,name=x215",
+	Filename:      "test.proto",
+}
+
+var E_X216 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         216,
+	Name:          "testdata.x216",
+	Tag:           "bytes,216,opt,name=x216",
+	Filename:      "test.proto",
+}
+
+var E_X217 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         217,
+	Name:          "testdata.x217",
+	Tag:           "bytes,217,opt,name=x217",
+	Filename:      "test.proto",
+}
+
+var E_X218 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         218,
+	Name:          "testdata.x218",
+	Tag:           "bytes,218,opt,name=x218",
+	Filename:      "test.proto",
+}
+
+var E_X219 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         219,
+	Name:          "testdata.x219",
+	Tag:           "bytes,219,opt,name=x219",
+	Filename:      "test.proto",
+}
+
+var E_X220 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         220,
+	Name:          "testdata.x220",
+	Tag:           "bytes,220,opt,name=x220",
+	Filename:      "test.proto",
+}
+
+var E_X221 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         221,
+	Name:          "testdata.x221",
+	Tag:           "bytes,221,opt,name=x221",
+	Filename:      "test.proto",
+}
+
+var E_X222 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         222,
+	Name:          "testdata.x222",
+	Tag:           "bytes,222,opt,name=x222",
+	Filename:      "test.proto",
+}
+
+var E_X223 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         223,
+	Name:          "testdata.x223",
+	Tag:           "bytes,223,opt,name=x223",
+	Filename:      "test.proto",
+}
+
+var E_X224 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         224,
+	Name:          "testdata.x224",
+	Tag:           "bytes,224,opt,name=x224",
+	Filename:      "test.proto",
+}
+
+var E_X225 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         225,
+	Name:          "testdata.x225",
+	Tag:           "bytes,225,opt,name=x225",
+	Filename:      "test.proto",
+}
+
+var E_X226 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         226,
+	Name:          "testdata.x226",
+	Tag:           "bytes,226,opt,name=x226",
+	Filename:      "test.proto",
+}
+
+var E_X227 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         227,
+	Name:          "testdata.x227",
+	Tag:           "bytes,227,opt,name=x227",
+	Filename:      "test.proto",
+}
+
+var E_X228 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         228,
+	Name:          "testdata.x228",
+	Tag:           "bytes,228,opt,name=x228",
+	Filename:      "test.proto",
+}
+
+var E_X229 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         229,
+	Name:          "testdata.x229",
+	Tag:           "bytes,229,opt,name=x229",
+	Filename:      "test.proto",
+}
+
+var E_X230 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         230,
+	Name:          "testdata.x230",
+	Tag:           "bytes,230,opt,name=x230",
+	Filename:      "test.proto",
+}
+
+var E_X231 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         231,
+	Name:          "testdata.x231",
+	Tag:           "bytes,231,opt,name=x231",
+	Filename:      "test.proto",
+}
+
+var E_X232 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         232,
+	Name:          "testdata.x232",
+	Tag:           "bytes,232,opt,name=x232",
+	Filename:      "test.proto",
+}
+
+var E_X233 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         233,
+	Name:          "testdata.x233",
+	Tag:           "bytes,233,opt,name=x233",
+	Filename:      "test.proto",
+}
+
+var E_X234 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         234,
+	Name:          "testdata.x234",
+	Tag:           "bytes,234,opt,name=x234",
+	Filename:      "test.proto",
+}
+
+var E_X235 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         235,
+	Name:          "testdata.x235",
+	Tag:           "bytes,235,opt,name=x235",
+	Filename:      "test.proto",
+}
+
+var E_X236 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         236,
+	Name:          "testdata.x236",
+	Tag:           "bytes,236,opt,name=x236",
+	Filename:      "test.proto",
+}
+
+var E_X237 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         237,
+	Name:          "testdata.x237",
+	Tag:           "bytes,237,opt,name=x237",
+	Filename:      "test.proto",
+}
+
+var E_X238 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         238,
+	Name:          "testdata.x238",
+	Tag:           "bytes,238,opt,name=x238",
+	Filename:      "test.proto",
+}
+
+var E_X239 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         239,
+	Name:          "testdata.x239",
+	Tag:           "bytes,239,opt,name=x239",
+	Filename:      "test.proto",
+}
+
+var E_X240 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         240,
+	Name:          "testdata.x240",
+	Tag:           "bytes,240,opt,name=x240",
+	Filename:      "test.proto",
+}
+
+var E_X241 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         241,
+	Name:          "testdata.x241",
+	Tag:           "bytes,241,opt,name=x241",
+	Filename:      "test.proto",
+}
+
+var E_X242 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         242,
+	Name:          "testdata.x242",
+	Tag:           "bytes,242,opt,name=x242",
+	Filename:      "test.proto",
+}
+
+var E_X243 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         243,
+	Name:          "testdata.x243",
+	Tag:           "bytes,243,opt,name=x243",
+	Filename:      "test.proto",
+}
+
+var E_X244 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         244,
+	Name:          "testdata.x244",
+	Tag:           "bytes,244,opt,name=x244",
+	Filename:      "test.proto",
+}
+
+var E_X245 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         245,
+	Name:          "testdata.x245",
+	Tag:           "bytes,245,opt,name=x245",
+	Filename:      "test.proto",
+}
+
+var E_X246 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         246,
+	Name:          "testdata.x246",
+	Tag:           "bytes,246,opt,name=x246",
+	Filename:      "test.proto",
+}
+
+var E_X247 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         247,
+	Name:          "testdata.x247",
+	Tag:           "bytes,247,opt,name=x247",
+	Filename:      "test.proto",
+}
+
+var E_X248 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         248,
+	Name:          "testdata.x248",
+	Tag:           "bytes,248,opt,name=x248",
+	Filename:      "test.proto",
+}
+
+var E_X249 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         249,
+	Name:          "testdata.x249",
+	Tag:           "bytes,249,opt,name=x249",
+	Filename:      "test.proto",
+}
+
+var E_X250 = &proto.ExtensionDesc{
+	ExtendedType:  (*MyMessageSet)(nil),
+	ExtensionType: (*Empty)(nil),
+	Field:         250,
+	Name:          "testdata.x250",
+	Tag:           "bytes,250,opt,name=x250",
+	Filename:      "test.proto",
+}
+
+func init() {
+	proto.RegisterType((*GoEnum)(nil), "testdata.GoEnum")
+	proto.RegisterType((*GoTestField)(nil), "testdata.GoTestField")
+	proto.RegisterType((*GoTest)(nil), "testdata.GoTest")
+	proto.RegisterType((*GoTest_RequiredGroup)(nil), "testdata.GoTest.RequiredGroup")
+	proto.RegisterType((*GoTest_RepeatedGroup)(nil), "testdata.GoTest.RepeatedGroup")
+	proto.RegisterType((*GoTest_OptionalGroup)(nil), "testdata.GoTest.OptionalGroup")
+	proto.RegisterType((*GoTestRequiredGroupField)(nil), "testdata.GoTestRequiredGroupField")
+	proto.RegisterType((*GoTestRequiredGroupField_Group)(nil), "testdata.GoTestRequiredGroupField.Group")
+	proto.RegisterType((*GoSkipTest)(nil), "testdata.GoSkipTest")
+	proto.RegisterType((*GoSkipTest_SkipGroup)(nil), "testdata.GoSkipTest.SkipGroup")
+	proto.RegisterType((*NonPackedTest)(nil), "testdata.NonPackedTest")
+	proto.RegisterType((*PackedTest)(nil), "testdata.PackedTest")
+	proto.RegisterType((*MaxTag)(nil), "testdata.MaxTag")
+	proto.RegisterType((*OldMessage)(nil), "testdata.OldMessage")
+	proto.RegisterType((*OldMessage_Nested)(nil), "testdata.OldMessage.Nested")
+	proto.RegisterType((*NewMessage)(nil), "testdata.NewMessage")
+	proto.RegisterType((*NewMessage_Nested)(nil), "testdata.NewMessage.Nested")
+	proto.RegisterType((*InnerMessage)(nil), "testdata.InnerMessage")
+	proto.RegisterType((*OtherMessage)(nil), "testdata.OtherMessage")
+	proto.RegisterType((*RequiredInnerMessage)(nil), "testdata.RequiredInnerMessage")
+	proto.RegisterType((*MyMessage)(nil), "testdata.MyMessage")
+	proto.RegisterType((*MyMessage_SomeGroup)(nil), "testdata.MyMessage.SomeGroup")
+	proto.RegisterType((*Ext)(nil), "testdata.Ext")
+	proto.RegisterType((*ComplexExtension)(nil), "testdata.ComplexExtension")
+	proto.RegisterType((*DefaultsMessage)(nil), "testdata.DefaultsMessage")
+	proto.RegisterType((*MyMessageSet)(nil), "testdata.MyMessageSet")
+	proto.RegisterType((*Empty)(nil), "testdata.Empty")
+	proto.RegisterType((*MessageList)(nil), "testdata.MessageList")
+	proto.RegisterType((*MessageList_Message)(nil), "testdata.MessageList.Message")
+	proto.RegisterType((*Strings)(nil), "testdata.Strings")
+	proto.RegisterType((*Defaults)(nil), "testdata.Defaults")
+	proto.RegisterType((*SubDefaults)(nil), "testdata.SubDefaults")
+	proto.RegisterType((*RepeatedEnum)(nil), "testdata.RepeatedEnum")
+	proto.RegisterType((*MoreRepeated)(nil), "testdata.MoreRepeated")
+	proto.RegisterType((*GroupOld)(nil), "testdata.GroupOld")
+	proto.RegisterType((*GroupOld_G)(nil), "testdata.GroupOld.G")
+	proto.RegisterType((*GroupNew)(nil), "testdata.GroupNew")
+	proto.RegisterType((*GroupNew_G)(nil), "testdata.GroupNew.G")
+	proto.RegisterType((*FloatingPoint)(nil), "testdata.FloatingPoint")
+	proto.RegisterType((*MessageWithMap)(nil), "testdata.MessageWithMap")
+	proto.RegisterType((*Oneof)(nil), "testdata.Oneof")
+	proto.RegisterType((*Oneof_F_Group)(nil), "testdata.Oneof.F_Group")
+	proto.RegisterType((*Communique)(nil), "testdata.Communique")
+	proto.RegisterEnum("testdata.FOO", FOO_name, FOO_value)
+	proto.RegisterEnum("testdata.GoTest_KIND", GoTest_KIND_name, GoTest_KIND_value)
+	proto.RegisterEnum("testdata.MyMessage_Color", MyMessage_Color_name, MyMessage_Color_value)
+	proto.RegisterEnum("testdata.DefaultsMessage_DefaultsEnum", DefaultsMessage_DefaultsEnum_name, DefaultsMessage_DefaultsEnum_value)
+	proto.RegisterEnum("testdata.Defaults_Color", Defaults_Color_name, Defaults_Color_value)
+	proto.RegisterEnum("testdata.RepeatedEnum_Color", RepeatedEnum_Color_name, RepeatedEnum_Color_value)
+	proto.RegisterExtension(E_Ext_More)
+	proto.RegisterExtension(E_Ext_Text)
+	proto.RegisterExtension(E_Ext_Number)
+	proto.RegisterExtension(E_Greeting)
+	proto.RegisterExtension(E_Complex)
+	proto.RegisterExtension(E_RComplex)
+	proto.RegisterExtension(E_NoDefaultDouble)
+	proto.RegisterExtension(E_NoDefaultFloat)
+	proto.RegisterExtension(E_NoDefaultInt32)
+	proto.RegisterExtension(E_NoDefaultInt64)
+	proto.RegisterExtension(E_NoDefaultUint32)
+	proto.RegisterExtension(E_NoDefaultUint64)
+	proto.RegisterExtension(E_NoDefaultSint32)
+	proto.RegisterExtension(E_NoDefaultSint64)
+	proto.RegisterExtension(E_NoDefaultFixed32)
+	proto.RegisterExtension(E_NoDefaultFixed64)
+	proto.RegisterExtension(E_NoDefaultSfixed32)
+	proto.RegisterExtension(E_NoDefaultSfixed64)
+	proto.RegisterExtension(E_NoDefaultBool)
+	proto.RegisterExtension(E_NoDefaultString)
+	proto.RegisterExtension(E_NoDefaultBytes)
+	proto.RegisterExtension(E_NoDefaultEnum)
+	proto.RegisterExtension(E_DefaultDouble)
+	proto.RegisterExtension(E_DefaultFloat)
+	proto.RegisterExtension(E_DefaultInt32)
+	proto.RegisterExtension(E_DefaultInt64)
+	proto.RegisterExtension(E_DefaultUint32)
+	proto.RegisterExtension(E_DefaultUint64)
+	proto.RegisterExtension(E_DefaultSint32)
+	proto.RegisterExtension(E_DefaultSint64)
+	proto.RegisterExtension(E_DefaultFixed32)
+	proto.RegisterExtension(E_DefaultFixed64)
+	proto.RegisterExtension(E_DefaultSfixed32)
+	proto.RegisterExtension(E_DefaultSfixed64)
+	proto.RegisterExtension(E_DefaultBool)
+	proto.RegisterExtension(E_DefaultString)
+	proto.RegisterExtension(E_DefaultBytes)
+	proto.RegisterExtension(E_DefaultEnum)
+	proto.RegisterExtension(E_X201)
+	proto.RegisterExtension(E_X202)
+	proto.RegisterExtension(E_X203)
+	proto.RegisterExtension(E_X204)
+	proto.RegisterExtension(E_X205)
+	proto.RegisterExtension(E_X206)
+	proto.RegisterExtension(E_X207)
+	proto.RegisterExtension(E_X208)
+	proto.RegisterExtension(E_X209)
+	proto.RegisterExtension(E_X210)
+	proto.RegisterExtension(E_X211)
+	proto.RegisterExtension(E_X212)
+	proto.RegisterExtension(E_X213)
+	proto.RegisterExtension(E_X214)
+	proto.RegisterExtension(E_X215)
+	proto.RegisterExtension(E_X216)
+	proto.RegisterExtension(E_X217)
+	proto.RegisterExtension(E_X218)
+	proto.RegisterExtension(E_X219)
+	proto.RegisterExtension(E_X220)
+	proto.RegisterExtension(E_X221)
+	proto.RegisterExtension(E_X222)
+	proto.RegisterExtension(E_X223)
+	proto.RegisterExtension(E_X224)
+	proto.RegisterExtension(E_X225)
+	proto.RegisterExtension(E_X226)
+	proto.RegisterExtension(E_X227)
+	proto.RegisterExtension(E_X228)
+	proto.RegisterExtension(E_X229)
+	proto.RegisterExtension(E_X230)
+	proto.RegisterExtension(E_X231)
+	proto.RegisterExtension(E_X232)
+	proto.RegisterExtension(E_X233)
+	proto.RegisterExtension(E_X234)
+	proto.RegisterExtension(E_X235)
+	proto.RegisterExtension(E_X236)
+	proto.RegisterExtension(E_X237)
+	proto.RegisterExtension(E_X238)
+	proto.RegisterExtension(E_X239)
+	proto.RegisterExtension(E_X240)
+	proto.RegisterExtension(E_X241)
+	proto.RegisterExtension(E_X242)
+	proto.RegisterExtension(E_X243)
+	proto.RegisterExtension(E_X244)
+	proto.RegisterExtension(E_X245)
+	proto.RegisterExtension(E_X246)
+	proto.RegisterExtension(E_X247)
+	proto.RegisterExtension(E_X248)
+	proto.RegisterExtension(E_X249)
+	proto.RegisterExtension(E_X250)
+}
+
+func init() { proto.RegisterFile("test.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
+	// 4453 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x94, 0x5a, 0xc9, 0x77, 0xdb, 0x48,
+	0x7a, 0x37, 0xc0, 0xfd, 0x23, 0x25, 0x42, 0x65, 0xb5, 0x9b, 0x96, 0xbc, 0xc0, 0x9c, 0xe9, 0x6e,
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+	0xee, 0x59, 0x7b, 0xd6, 0xac, 0x93, 0x7d, 0x99, 0xec, 0xdb, 0x4c, 0x92, 0x4b, 0xcf, 0xab, 0xaf,
+	0x0a, 0x40, 0x01, 0x24, 0x20, 0xf9, 0x24, 0x56, 0xd5, 0xef, 0xf7, 0xd5, 0xf6, 0xab, 0xef, 0xab,
+	0xaf, 0x20, 0x00, 0xc7, 0x9c, 0x38, 0x2b, 0xa3, 0xb1, 0xed, 0xd8, 0x24, 0x4b, 0x7f, 0x77, 0x3b,
+	0x4e, 0xa7, 0x7c, 0x1d, 0xd2, 0x1b, 0x76, 0xc3, 0x3a, 0x1a, 0x92, 0xab, 0x90, 0x38, 0xb4, 0xed,
+	0x92, 0xa4, 0xca, 0x95, 0x79, 0x6d, 0x6e, 0xc5, 0x45, 0xac, 0x34, 0x5b, 0x2d, 0x83, 0xb6, 0x94,
+	0xef, 0x40, 0x7e, 0xc3, 0xde, 0x33, 0x27, 0x4e, 0xb3, 0x6f, 0x0e, 0xba, 0x64, 0x11, 0x52, 0x4f,
+	0x3b, 0xfb, 0xe6, 0x00, 0x19, 0x39, 0x83, 0x15, 0x08, 0x81, 0xe4, 0xde, 0xc9, 0xc8, 0x2c, 0xc9,
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+	0xba, 0xbc, 0x97, 0xd7, 0xfc, 0x5e, 0x58, 0xfb, 0xca, 0x97, 0x37, 0xb7, 0x1f, 0x1b, 0x08, 0xa1,
+	0xf6, 0xf7, 0x3a, 0xfb, 0x03, 0x6a, 0x4a, 0xa2, 0xf6, 0xb1, 0x40, 0x6b, 0x77, 0x3a, 0xe3, 0xce,
+	0xb0, 0x94, 0x50, 0xa5, 0x4a, 0xca, 0x60, 0x05, 0x72, 0x1f, 0xe6, 0x0c, 0xf3, 0xc5, 0x51, 0x7f,
+	0x6c, 0x76, 0x71, 0x70, 0xa5, 0xa4, 0x2a, 0x57, 0xf2, 0xd3, 0xf6, 0xb1, 0xd1, 0x08, 0x62, 0x19,
+	0x79, 0x64, 0x76, 0x1c, 0x97, 0x9c, 0x52, 0x13, 0xb1, 0x64, 0x01, 0x4b, 0xc9, 0xad, 0x91, 0xd3,
+	0xb7, 0xad, 0xce, 0x80, 0x91, 0xd3, 0xaa, 0x14, 0x43, 0x0e, 0x60, 0xc9, 0x9b, 0x50, 0x6c, 0xb6,
+	0x1f, 0xda, 0xf6, 0xa0, 0x3d, 0xe6, 0x23, 0x2a, 0x81, 0x2a, 0x57, 0xb2, 0xc6, 0x5c, 0x93, 0xd6,
+	0xba, 0xc3, 0x24, 0x15, 0x50, 0x9a, 0xed, 0x4d, 0xcb, 0xa9, 0x6a, 0x3e, 0x30, 0xaf, 0xca, 0x95,
+	0x94, 0x31, 0xdf, 0xc4, 0xea, 0x29, 0x64, 0x4d, 0xf7, 0x91, 0x05, 0x55, 0xae, 0x24, 0x18, 0xb2,
+	0xa6, 0x7b, 0xc8, 0x5b, 0x40, 0x9a, 0xed, 0x66, 0xff, 0xd8, 0xec, 0x8a, 0x56, 0xe7, 0x54, 0xb9,
+	0x92, 0x31, 0x94, 0x26, 0x6f, 0x98, 0x81, 0x16, 0x2d, 0xcf, 0xab, 0x72, 0x25, 0xed, 0xa2, 0x05,
+	0xdb, 0x37, 0x60, 0xa1, 0xd9, 0x7e, 0xb7, 0x1f, 0x1c, 0x70, 0x51, 0x95, 0x2b, 0x73, 0x46, 0xb1,
+	0xc9, 0xea, 0xa7, 0xb1, 0xa2, 0x61, 0x45, 0x95, 0x2b, 0x49, 0x8e, 0x15, 0xec, 0xe2, 0xec, 0x9a,
+	0x03, 0xbb, 0xe3, 0xf8, 0xd0, 0x05, 0x55, 0xae, 0xc8, 0xc6, 0x7c, 0x13, 0xab, 0x83, 0x56, 0x1f,
+	0xdb, 0x47, 0xfb, 0x03, 0xd3, 0x87, 0x12, 0x55, 0xae, 0x48, 0x46, 0xb1, 0xc9, 0xea, 0x83, 0xd8,
+	0x5d, 0x67, 0xdc, 0xb7, 0x7a, 0x3e, 0xf6, 0x3c, 0xea, 0xb7, 0xd8, 0x64, 0xf5, 0xc1, 0x11, 0x3c,
+	0x3c, 0x71, 0xcc, 0x89, 0x0f, 0x35, 0x55, 0xb9, 0x52, 0x30, 0xe6, 0x9b, 0x58, 0x1d, 0xb2, 0x1a,
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+	0x62, 0xd8, 0xf7, 0x18, 0x7b, 0x6d, 0x35, 0x92, 0xfd, 0x59, 0x34, 0x7b, 0x6d, 0x95, 0xb3, 0xa3,
+	0xb5, 0xf6, 0xed, 0x18, 0x36, 0xd7, 0xda, 0x5a, 0xb4, 0xd6, 0xbe, 0x13, 0xc3, 0xe6, 0x5a, 0x5b,
+	0x8b, 0xd6, 0xda, 0x77, 0x63, 0xd8, 0x5c, 0x6b, 0x6b, 0xd1, 0x5a, 0xfb, 0x5e, 0x0c, 0x9b, 0x6b,
+	0x6d, 0x2d, 0x5a, 0x6b, 0xdf, 0x8f, 0x61, 0x73, 0xad, 0xad, 0x45, 0x6b, 0xed, 0x07, 0x31, 0x6c,
+	0xae, 0xb5, 0xb5, 0x68, 0xad, 0xfd, 0x51, 0x0c, 0x9b, 0x6b, 0x6d, 0x2d, 0x5a, 0x6b, 0x7f, 0x1c,
+	0xc3, 0xe6, 0x5a, 0x5b, 0x8b, 0xd6, 0xda, 0x9f, 0xc4, 0xb0, 0xb9, 0xd6, 0xb4, 0x68, 0xad, 0xfd,
+	0x69, 0x34, 0x5b, 0xe3, 0x5a, 0xd3, 0xa2, 0xb5, 0xf6, 0x67, 0x31, 0x6c, 0xae, 0x35, 0x2d, 0x5a,
+	0x6b, 0x7f, 0x1e, 0xc3, 0xe6, 0x5a, 0xd3, 0xa2, 0xb5, 0xf6, 0xc3, 0x18, 0x36, 0xd7, 0x9a, 0x16,
+	0xad, 0xb5, 0xbf, 0x88, 0x61, 0x73, 0xad, 0x69, 0xd1, 0x5a, 0xfb, 0xcb, 0x18, 0x36, 0xd7, 0x9a,
+	0x16, 0xad, 0xb5, 0xbf, 0x8a, 0x61, 0x73, 0xad, 0x69, 0xd1, 0x5a, 0xfb, 0xeb, 0x18, 0x36, 0xd7,
+	0x9a, 0x16, 0xad, 0xb5, 0xbf, 0x89, 0x61, 0x73, 0xad, 0x69, 0xd1, 0x5a, 0xfb, 0xdb, 0x18, 0x36,
+	0xd7, 0x5a, 0x35, 0x5a, 0x6b, 0x7f, 0x17, 0xcd, 0xae, 0x72, 0xad, 0x55, 0xa3, 0xb5, 0xf6, 0xf7,
+	0x31, 0x6c, 0xae, 0xb5, 0x6a, 0xb4, 0xd6, 0xfe, 0x21, 0x86, 0xcd, 0xb5, 0x56, 0x8d, 0xd6, 0xda,
+	0x3f, 0xc6, 0xb0, 0xb9, 0xd6, 0xaa, 0xd1, 0x5a, 0xfb, 0x51, 0x0c, 0x9b, 0x6b, 0xad, 0x1a, 0xad,
+	0xb5, 0x7f, 0x8a, 0x61, 0x73, 0xad, 0x55, 0xa3, 0xb5, 0xf6, 0xcf, 0x31, 0x6c, 0xae, 0xb5, 0x6a,
+	0xb4, 0xd6, 0xfe, 0x25, 0x86, 0xcd, 0xb5, 0x56, 0x8d, 0xd6, 0xda, 0xbf, 0xc6, 0xb0, 0xb9, 0xd6,
+	0xaa, 0xd1, 0x5a, 0xfb, 0xb7, 0x18, 0x36, 0xd7, 0x9a, 0x1e, 0xad, 0xb5, 0x7f, 0x8f, 0x66, 0xeb,
+	0x5c, 0x6b, 0x7a, 0xb4, 0xd6, 0xfe, 0x23, 0x86, 0xcd, 0xb5, 0xa6, 0x47, 0x6b, 0xed, 0x3f, 0x63,
+	0xd8, 0x5c, 0x6b, 0x7a, 0xb4, 0xd6, 0xfe, 0x2b, 0x86, 0xcd, 0xb5, 0xa6, 0x47, 0x6b, 0xed, 0xbf,
+	0x63, 0xd8, 0x5c, 0x6b, 0x7a, 0xb4, 0xd6, 0xfe, 0x27, 0x86, 0xcd, 0xb5, 0xa6, 0x47, 0x6b, 0xed,
+	0xc7, 0x31, 0x6c, 0xae, 0x35, 0x3d, 0x5a, 0x6b, 0x3f, 0x89, 0x61, 0x73, 0xad, 0xe9, 0xd1, 0x5a,
+	0xfb, 0xdf, 0x18, 0x36, 0xd7, 0x9a, 0x1e, 0xad, 0xb5, 0xff, 0x8b, 0x61, 0x73, 0xad, 0xad, 0x47,
+	0x6b, 0xed, 0xff, 0xa3, 0xd9, 0xeb, 0xab, 0x3f, 0x0d, 0x00, 0x00, 0xff, 0xff, 0xaa, 0x00, 0xcd,
+	0x32, 0x57, 0x39, 0x00, 0x00,
+}
diff --git a/vendor/github.com/golang/protobuf/proto/testdata/test.proto b/vendor/github.com/golang/protobuf/proto/testdata/test.proto
new file mode 100644
index 000000000..70e3cfcda
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/testdata/test.proto
@@ -0,0 +1,548 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// A feature-rich test file for the protocol compiler and libraries.
+
+syntax = "proto2";
+
+package testdata;
+
+enum FOO { FOO1 = 1; };
+
+message GoEnum {
+  required FOO foo = 1;
+}
+
+message GoTestField {
+  required string Label = 1;
+  required string Type = 2;
+}
+
+message GoTest {
+  // An enum, for completeness.
+  enum KIND {
+    VOID = 0;
+
+    // Basic types
+    BOOL = 1;
+    BYTES = 2;
+    FINGERPRINT = 3;
+    FLOAT = 4;
+    INT = 5;
+    STRING = 6;
+    TIME = 7;
+
+    // Groupings
+    TUPLE = 8;
+    ARRAY = 9;
+    MAP = 10;
+
+    // Table types
+    TABLE = 11;
+
+    // Functions
+    FUNCTION = 12;  // last tag
+  };
+
+  // Some typical parameters
+  required KIND Kind = 1;
+  optional string Table = 2;
+  optional int32 Param = 3;
+
+  // Required, repeated and optional foreign fields.
+  required GoTestField RequiredField = 4;
+  repeated GoTestField RepeatedField = 5;
+  optional GoTestField OptionalField = 6;
+
+  // Required fields of all basic types
+  required bool F_Bool_required = 10;
+  required int32 F_Int32_required = 11;
+  required int64 F_Int64_required = 12;
+  required fixed32 F_Fixed32_required = 13;
+  required fixed64 F_Fixed64_required = 14;
+  required uint32 F_Uint32_required = 15;
+  required uint64 F_Uint64_required = 16;
+  required float F_Float_required = 17;
+  required double F_Double_required = 18;
+  required string F_String_required = 19;
+  required bytes F_Bytes_required = 101;
+  required sint32 F_Sint32_required = 102;
+  required sint64 F_Sint64_required = 103;
+
+  // Repeated fields of all basic types
+  repeated bool F_Bool_repeated = 20;
+  repeated int32 F_Int32_repeated = 21;
+  repeated int64 F_Int64_repeated = 22;
+  repeated fixed32 F_Fixed32_repeated = 23;
+  repeated fixed64 F_Fixed64_repeated = 24;
+  repeated uint32 F_Uint32_repeated = 25;
+  repeated uint64 F_Uint64_repeated = 26;
+  repeated float F_Float_repeated = 27;
+  repeated double F_Double_repeated = 28;
+  repeated string F_String_repeated = 29;
+  repeated bytes F_Bytes_repeated = 201;
+  repeated sint32 F_Sint32_repeated = 202;
+  repeated sint64 F_Sint64_repeated = 203;
+
+  // Optional fields of all basic types
+  optional bool F_Bool_optional = 30;
+  optional int32 F_Int32_optional = 31;
+  optional int64 F_Int64_optional = 32;
+  optional fixed32 F_Fixed32_optional = 33;
+  optional fixed64 F_Fixed64_optional = 34;
+  optional uint32 F_Uint32_optional = 35;
+  optional uint64 F_Uint64_optional = 36;
+  optional float F_Float_optional = 37;
+  optional double F_Double_optional = 38;
+  optional string F_String_optional = 39;
+  optional bytes F_Bytes_optional = 301;
+  optional sint32 F_Sint32_optional = 302;
+  optional sint64 F_Sint64_optional = 303;
+
+  // Default-valued fields of all basic types
+  optional bool F_Bool_defaulted = 40 [default=true];
+  optional int32 F_Int32_defaulted = 41 [default=32];
+  optional int64 F_Int64_defaulted = 42 [default=64];
+  optional fixed32 F_Fixed32_defaulted = 43 [default=320];
+  optional fixed64 F_Fixed64_defaulted = 44 [default=640];
+  optional uint32 F_Uint32_defaulted = 45 [default=3200];
+  optional uint64 F_Uint64_defaulted = 46 [default=6400];
+  optional float F_Float_defaulted = 47 [default=314159.];
+  optional double F_Double_defaulted = 48 [default=271828.];
+  optional string F_String_defaulted = 49 [default="hello, \"world!\"\n"];
+  optional bytes F_Bytes_defaulted = 401 [default="Bignose"];
+  optional sint32 F_Sint32_defaulted = 402 [default = -32];
+  optional sint64 F_Sint64_defaulted = 403 [default = -64];
+
+  // Packed repeated fields (no string or bytes).
+  repeated bool F_Bool_repeated_packed = 50 [packed=true];
+  repeated int32 F_Int32_repeated_packed = 51 [packed=true];
+  repeated int64 F_Int64_repeated_packed = 52 [packed=true];
+  repeated fixed32 F_Fixed32_repeated_packed = 53 [packed=true];
+  repeated fixed64 F_Fixed64_repeated_packed = 54 [packed=true];
+  repeated uint32 F_Uint32_repeated_packed = 55 [packed=true];
+  repeated uint64 F_Uint64_repeated_packed = 56 [packed=true];
+  repeated float F_Float_repeated_packed = 57 [packed=true];
+  repeated double F_Double_repeated_packed = 58 [packed=true];
+  repeated sint32 F_Sint32_repeated_packed = 502 [packed=true];
+  repeated sint64 F_Sint64_repeated_packed = 503 [packed=true];
+
+  // Required, repeated, and optional groups.
+  required group RequiredGroup = 70 {
+    required string RequiredField = 71;
+  };
+
+  repeated group RepeatedGroup = 80 {
+    required string RequiredField = 81;
+  };
+
+  optional group OptionalGroup = 90 {
+    required string RequiredField = 91;
+  };
+}
+
+// For testing a group containing a required field.
+message GoTestRequiredGroupField {
+  required group Group = 1 {
+    required int32 Field = 2;
+  };
+}
+
+// For testing skipping of unrecognized fields.
+// Numbers are all big, larger than tag numbers in GoTestField,
+// the message used in the corresponding test.
+message GoSkipTest {
+  required int32 skip_int32 = 11;
+  required fixed32 skip_fixed32 = 12;
+  required fixed64 skip_fixed64 = 13;
+  required string skip_string = 14;
+  required group SkipGroup = 15 {
+    required int32 group_int32 = 16;
+    required string group_string = 17;
+  }
+}
+
+// For testing packed/non-packed decoder switching.
+// A serialized instance of one should be deserializable as the other.
+message NonPackedTest {
+  repeated int32 a = 1;
+}
+
+message PackedTest {
+  repeated int32 b = 1 [packed=true];
+}
+
+message MaxTag {
+  // Maximum possible tag number.
+  optional string last_field = 536870911;
+}
+
+message OldMessage {
+  message Nested {
+    optional string name = 1;
+  }
+  optional Nested nested = 1;
+
+  optional int32 num = 2;
+}
+
+// NewMessage is wire compatible with OldMessage;
+// imagine it as a future version.
+message NewMessage {
+  message Nested {
+    optional string name = 1;
+    optional string food_group = 2;
+  }
+  optional Nested nested = 1;
+
+  // This is an int32 in OldMessage.
+  optional int64 num = 2;
+}
+
+// Smaller tests for ASCII formatting.
+
+message InnerMessage {
+  required string host = 1;
+  optional int32 port = 2 [default=4000];
+  optional bool connected = 3;
+}
+
+message OtherMessage {
+  optional int64 key = 1;
+  optional bytes value = 2;
+  optional float weight = 3;
+  optional InnerMessage inner = 4;
+
+  extensions 100 to max;
+}
+
+message RequiredInnerMessage {
+  required InnerMessage leo_finally_won_an_oscar = 1;
+}
+
+message MyMessage {
+  required int32 count = 1;
+  optional string name = 2;
+  optional string quote = 3;
+  repeated string pet = 4;
+  optional InnerMessage inner = 5;
+  repeated OtherMessage others = 6;
+  optional RequiredInnerMessage we_must_go_deeper = 13;
+  repeated InnerMessage rep_inner = 12;
+
+  enum Color {
+    RED = 0;
+    GREEN = 1;
+    BLUE = 2;
+  };
+  optional Color bikeshed = 7;
+
+  optional group SomeGroup = 8 {
+    optional int32 group_field = 9;
+  }
+
+  // This field becomes [][]byte in the generated code.
+  repeated bytes rep_bytes = 10;
+
+  optional double bigfloat = 11;
+
+  extensions 100 to max;
+}
+
+message Ext {
+  extend MyMessage {
+    optional Ext more = 103;
+    optional string text = 104;
+    optional int32 number = 105;
+  }
+
+  optional string data = 1;
+}
+
+extend MyMessage {
+  repeated string greeting = 106;
+}
+
+message ComplexExtension {
+  optional int32 first = 1;
+  optional int32 second = 2;
+  repeated int32 third = 3;
+}
+
+extend OtherMessage {
+  optional ComplexExtension complex = 200;
+  repeated ComplexExtension r_complex = 201;
+}
+
+message DefaultsMessage {
+  enum DefaultsEnum {
+    ZERO = 0;
+    ONE = 1;
+    TWO = 2;
+  };
+  extensions 100 to max;
+}
+
+extend DefaultsMessage {
+  optional double no_default_double = 101;
+  optional float no_default_float = 102;
+  optional int32 no_default_int32 = 103;
+  optional int64 no_default_int64 = 104;
+  optional uint32 no_default_uint32 = 105;
+  optional uint64 no_default_uint64 = 106;
+  optional sint32 no_default_sint32 = 107;
+  optional sint64 no_default_sint64 = 108;
+  optional fixed32 no_default_fixed32 = 109;
+  optional fixed64 no_default_fixed64 = 110;
+  optional sfixed32 no_default_sfixed32 = 111;
+  optional sfixed64 no_default_sfixed64 = 112;
+  optional bool no_default_bool = 113;
+  optional string no_default_string = 114;
+  optional bytes no_default_bytes = 115;
+  optional DefaultsMessage.DefaultsEnum no_default_enum = 116;
+
+  optional double default_double = 201 [default = 3.1415];
+  optional float default_float = 202 [default = 3.14];
+  optional int32 default_int32 = 203 [default = 42];
+  optional int64 default_int64 = 204 [default = 43];
+  optional uint32 default_uint32 = 205 [default = 44];
+  optional uint64 default_uint64 = 206 [default = 45];
+  optional sint32 default_sint32 = 207 [default = 46];
+  optional sint64 default_sint64 = 208 [default = 47];
+  optional fixed32 default_fixed32 = 209 [default = 48];
+  optional fixed64 default_fixed64 = 210 [default = 49];
+  optional sfixed32 default_sfixed32 = 211 [default = 50];
+  optional sfixed64 default_sfixed64 = 212 [default = 51];
+  optional bool default_bool = 213 [default = true];
+  optional string default_string = 214 [default = "Hello, string"];
+  optional bytes default_bytes = 215 [default = "Hello, bytes"];
+  optional DefaultsMessage.DefaultsEnum default_enum = 216 [default = ONE];
+}
+
+message MyMessageSet {
+  option message_set_wire_format = true;
+  extensions 100 to max;
+}
+
+message Empty {
+}
+
+extend MyMessageSet {
+    optional Empty x201 = 201;
+    optional Empty x202 = 202;
+    optional Empty x203 = 203;
+    optional Empty x204 = 204;
+    optional Empty x205 = 205;
+    optional Empty x206 = 206;
+    optional Empty x207 = 207;
+    optional Empty x208 = 208;
+    optional Empty x209 = 209;
+    optional Empty x210 = 210;
+    optional Empty x211 = 211;
+    optional Empty x212 = 212;
+    optional Empty x213 = 213;
+    optional Empty x214 = 214;
+    optional Empty x215 = 215;
+    optional Empty x216 = 216;
+    optional Empty x217 = 217;
+    optional Empty x218 = 218;
+    optional Empty x219 = 219;
+    optional Empty x220 = 220;
+    optional Empty x221 = 221;
+    optional Empty x222 = 222;
+    optional Empty x223 = 223;
+    optional Empty x224 = 224;
+    optional Empty x225 = 225;
+    optional Empty x226 = 226;
+    optional Empty x227 = 227;
+    optional Empty x228 = 228;
+    optional Empty x229 = 229;
+    optional Empty x230 = 230;
+    optional Empty x231 = 231;
+    optional Empty x232 = 232;
+    optional Empty x233 = 233;
+    optional Empty x234 = 234;
+    optional Empty x235 = 235;
+    optional Empty x236 = 236;
+    optional Empty x237 = 237;
+    optional Empty x238 = 238;
+    optional Empty x239 = 239;
+    optional Empty x240 = 240;
+    optional Empty x241 = 241;
+    optional Empty x242 = 242;
+    optional Empty x243 = 243;
+    optional Empty x244 = 244;
+    optional Empty x245 = 245;
+    optional Empty x246 = 246;
+    optional Empty x247 = 247;
+    optional Empty x248 = 248;
+    optional Empty x249 = 249;
+    optional Empty x250 = 250;
+}
+
+message MessageList {
+  repeated group Message = 1 {
+    required string name = 2;
+    required int32 count = 3;
+  }
+}
+
+message Strings {
+  optional string string_field = 1;
+  optional bytes bytes_field = 2;
+}
+
+message Defaults {
+  enum Color {
+    RED = 0;
+    GREEN = 1;
+    BLUE = 2;
+  }
+
+  // Default-valued fields of all basic types.
+  // Same as GoTest, but copied here to make testing easier.
+  optional bool F_Bool = 1 [default=true];
+  optional int32 F_Int32 = 2 [default=32];
+  optional int64 F_Int64 = 3 [default=64];
+  optional fixed32 F_Fixed32 = 4 [default=320];
+  optional fixed64 F_Fixed64 = 5 [default=640];
+  optional uint32 F_Uint32 = 6 [default=3200];
+  optional uint64 F_Uint64 = 7 [default=6400];
+  optional float F_Float = 8 [default=314159.];
+  optional double F_Double = 9 [default=271828.];
+  optional string F_String = 10 [default="hello, \"world!\"\n"];
+  optional bytes F_Bytes = 11 [default="Bignose"];
+  optional sint32 F_Sint32 = 12 [default=-32];
+  optional sint64 F_Sint64 = 13 [default=-64];
+  optional Color F_Enum = 14 [default=GREEN];
+
+  // More fields with crazy defaults.
+  optional float F_Pinf = 15 [default=inf];
+  optional float F_Ninf = 16 [default=-inf];
+  optional float F_Nan = 17 [default=nan];
+
+  // Sub-message.
+  optional SubDefaults sub = 18;
+
+  // Redundant but explicit defaults.
+  optional string str_zero = 19 [default=""];
+}
+
+message SubDefaults {
+  optional int64 n = 1 [default=7];
+}
+
+message RepeatedEnum {
+  enum Color {
+    RED = 1;
+  }
+  repeated Color color = 1;
+}
+
+message MoreRepeated {
+  repeated bool bools = 1;
+  repeated bool bools_packed = 2 [packed=true];
+  repeated int32 ints = 3;
+  repeated int32 ints_packed = 4 [packed=true];
+  repeated int64 int64s_packed = 7 [packed=true];
+  repeated string strings = 5;
+  repeated fixed32 fixeds = 6;
+}
+
+// GroupOld and GroupNew have the same wire format.
+// GroupNew has a new field inside a group.
+
+message GroupOld {
+  optional group G = 101 {
+    optional int32 x = 2;
+  }
+}
+
+message GroupNew {
+  optional group G = 101 {
+    optional int32 x = 2;
+    optional int32 y = 3;
+  }
+}
+
+message FloatingPoint {
+  required double f = 1;
+  optional bool exact = 2;
+}
+
+message MessageWithMap {
+  map<int32, string> name_mapping = 1;
+  map<sint64, FloatingPoint> msg_mapping = 2;
+  map<bool, bytes> byte_mapping = 3;
+  map<string, string> str_to_str = 4;
+}
+
+message Oneof {
+  oneof union {
+    bool F_Bool = 1;
+    int32 F_Int32 = 2;
+    int64 F_Int64 = 3;
+    fixed32 F_Fixed32 = 4;
+    fixed64 F_Fixed64 = 5;
+    uint32 F_Uint32 = 6;
+    uint64 F_Uint64 = 7;
+    float F_Float = 8;
+    double F_Double = 9;
+    string F_String = 10;
+    bytes F_Bytes = 11;
+    sint32 F_Sint32 = 12;
+    sint64 F_Sint64 = 13;
+    MyMessage.Color F_Enum = 14;
+    GoTestField F_Message = 15;
+    group F_Group = 16 {
+      optional int32 x = 17;
+    }
+    int32 F_Largest_Tag = 536870911;
+  }
+
+  oneof tormato {
+    int32 value = 100;
+  }
+}
+
+message Communique {
+  optional bool make_me_cry = 1;
+
+  // This is a oneof, called "union".
+  oneof union {
+    int32 number = 5;
+    string name = 6;
+    bytes data = 7;
+    double temp_c = 8;
+    MyMessage.Color col = 9;
+    Strings msg = 10;
+  }
+}
diff --git a/vendor/github.com/golang/protobuf/proto/text.go b/vendor/github.com/golang/protobuf/proto/text.go
new file mode 100644
index 000000000..965876bf0
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/text.go
@@ -0,0 +1,854 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto
+
+// Functions for writing the text protocol buffer format.
+
+import (
+	"bufio"
+	"bytes"
+	"encoding"
+	"errors"
+	"fmt"
+	"io"
+	"log"
+	"math"
+	"reflect"
+	"sort"
+	"strings"
+)
+
+var (
+	newline         = []byte("\n")
+	spaces          = []byte("                                        ")
+	gtNewline       = []byte(">\n")
+	endBraceNewline = []byte("}\n")
+	backslashN      = []byte{'\\', 'n'}
+	backslashR      = []byte{'\\', 'r'}
+	backslashT      = []byte{'\\', 't'}
+	backslashDQ     = []byte{'\\', '"'}
+	backslashBS     = []byte{'\\', '\\'}
+	posInf          = []byte("inf")
+	negInf          = []byte("-inf")
+	nan             = []byte("nan")
+)
+
+type writer interface {
+	io.Writer
+	WriteByte(byte) error
+}
+
+// textWriter is an io.Writer that tracks its indentation level.
+type textWriter struct {
+	ind      int
+	complete bool // if the current position is a complete line
+	compact  bool // whether to write out as a one-liner
+	w        writer
+}
+
+func (w *textWriter) WriteString(s string) (n int, err error) {
+	if !strings.Contains(s, "\n") {
+		if !w.compact && w.complete {
+			w.writeIndent()
+		}
+		w.complete = false
+		return io.WriteString(w.w, s)
+	}
+	// WriteString is typically called without newlines, so this
+	// codepath and its copy are rare.  We copy to avoid
+	// duplicating all of Write's logic here.
+	return w.Write([]byte(s))
+}
+
+func (w *textWriter) Write(p []byte) (n int, err error) {
+	newlines := bytes.Count(p, newline)
+	if newlines == 0 {
+		if !w.compact && w.complete {
+			w.writeIndent()
+		}
+		n, err = w.w.Write(p)
+		w.complete = false
+		return n, err
+	}
+
+	frags := bytes.SplitN(p, newline, newlines+1)
+	if w.compact {
+		for i, frag := range frags {
+			if i > 0 {
+				if err := w.w.WriteByte(' '); err != nil {
+					return n, err
+				}
+				n++
+			}
+			nn, err := w.w.Write(frag)
+			n += nn
+			if err != nil {
+				return n, err
+			}
+		}
+		return n, nil
+	}
+
+	for i, frag := range frags {
+		if w.complete {
+			w.writeIndent()
+		}
+		nn, err := w.w.Write(frag)
+		n += nn
+		if err != nil {
+			return n, err
+		}
+		if i+1 < len(frags) {
+			if err := w.w.WriteByte('\n'); err != nil {
+				return n, err
+			}
+			n++
+		}
+	}
+	w.complete = len(frags[len(frags)-1]) == 0
+	return n, nil
+}
+
+func (w *textWriter) WriteByte(c byte) error {
+	if w.compact && c == '\n' {
+		c = ' '
+	}
+	if !w.compact && w.complete {
+		w.writeIndent()
+	}
+	err := w.w.WriteByte(c)
+	w.complete = c == '\n'
+	return err
+}
+
+func (w *textWriter) indent() { w.ind++ }
+
+func (w *textWriter) unindent() {
+	if w.ind == 0 {
+		log.Print("proto: textWriter unindented too far")
+		return
+	}
+	w.ind--
+}
+
+func writeName(w *textWriter, props *Properties) error {
+	if _, err := w.WriteString(props.OrigName); err != nil {
+		return err
+	}
+	if props.Wire != "group" {
+		return w.WriteByte(':')
+	}
+	return nil
+}
+
+// raw is the interface satisfied by RawMessage.
+type raw interface {
+	Bytes() []byte
+}
+
+func requiresQuotes(u string) bool {
+	// When type URL contains any characters except [0-9A-Za-z./\-]*, it must be quoted.
+	for _, ch := range u {
+		switch {
+		case ch == '.' || ch == '/' || ch == '_':
+			continue
+		case '0' <= ch && ch <= '9':
+			continue
+		case 'A' <= ch && ch <= 'Z':
+			continue
+		case 'a' <= ch && ch <= 'z':
+			continue
+		default:
+			return true
+		}
+	}
+	return false
+}
+
+// isAny reports whether sv is a google.protobuf.Any message
+func isAny(sv reflect.Value) bool {
+	type wkt interface {
+		XXX_WellKnownType() string
+	}
+	t, ok := sv.Addr().Interface().(wkt)
+	return ok && t.XXX_WellKnownType() == "Any"
+}
+
+// writeProto3Any writes an expanded google.protobuf.Any message.
+//
+// It returns (false, nil) if sv value can't be unmarshaled (e.g. because
+// required messages are not linked in).
+//
+// It returns (true, error) when sv was written in expanded format or an error
+// was encountered.
+func (tm *TextMarshaler) writeProto3Any(w *textWriter, sv reflect.Value) (bool, error) {
+	turl := sv.FieldByName("TypeUrl")
+	val := sv.FieldByName("Value")
+	if !turl.IsValid() || !val.IsValid() {
+		return true, errors.New("proto: invalid google.protobuf.Any message")
+	}
+
+	b, ok := val.Interface().([]byte)
+	if !ok {
+		return true, errors.New("proto: invalid google.protobuf.Any message")
+	}
+
+	parts := strings.Split(turl.String(), "/")
+	mt := MessageType(parts[len(parts)-1])
+	if mt == nil {
+		return false, nil
+	}
+	m := reflect.New(mt.Elem())
+	if err := Unmarshal(b, m.Interface().(Message)); err != nil {
+		return false, nil
+	}
+	w.Write([]byte("["))
+	u := turl.String()
+	if requiresQuotes(u) {
+		writeString(w, u)
+	} else {
+		w.Write([]byte(u))
+	}
+	if w.compact {
+		w.Write([]byte("]:<"))
+	} else {
+		w.Write([]byte("]: <\n"))
+		w.ind++
+	}
+	if err := tm.writeStruct(w, m.Elem()); err != nil {
+		return true, err
+	}
+	if w.compact {
+		w.Write([]byte("> "))
+	} else {
+		w.ind--
+		w.Write([]byte(">\n"))
+	}
+	return true, nil
+}
+
+func (tm *TextMarshaler) writeStruct(w *textWriter, sv reflect.Value) error {
+	if tm.ExpandAny && isAny(sv) {
+		if canExpand, err := tm.writeProto3Any(w, sv); canExpand {
+			return err
+		}
+	}
+	st := sv.Type()
+	sprops := GetProperties(st)
+	for i := 0; i < sv.NumField(); i++ {
+		fv := sv.Field(i)
+		props := sprops.Prop[i]
+		name := st.Field(i).Name
+
+		if strings.HasPrefix(name, "XXX_") {
+			// There are two XXX_ fields:
+			//   XXX_unrecognized []byte
+			//   XXX_extensions   map[int32]proto.Extension
+			// The first is handled here;
+			// the second is handled at the bottom of this function.
+			if name == "XXX_unrecognized" && !fv.IsNil() {
+				if err := writeUnknownStruct(w, fv.Interface().([]byte)); err != nil {
+					return err
+				}
+			}
+			continue
+		}
+		if fv.Kind() == reflect.Ptr && fv.IsNil() {
+			// Field not filled in. This could be an optional field or
+			// a required field that wasn't filled in. Either way, there
+			// isn't anything we can show for it.
+			continue
+		}
+		if fv.Kind() == reflect.Slice && fv.IsNil() {
+			// Repeated field that is empty, or a bytes field that is unused.
+			continue
+		}
+
+		if props.Repeated && fv.Kind() == reflect.Slice {
+			// Repeated field.
+			for j := 0; j < fv.Len(); j++ {
+				if err := writeName(w, props); err != nil {
+					return err
+				}
+				if !w.compact {
+					if err := w.WriteByte(' '); err != nil {
+						return err
+					}
+				}
+				v := fv.Index(j)
+				if v.Kind() == reflect.Ptr && v.IsNil() {
+					// A nil message in a repeated field is not valid,
+					// but we can handle that more gracefully than panicking.
+					if _, err := w.Write([]byte("<nil>\n")); err != nil {
+						return err
+					}
+					continue
+				}
+				if err := tm.writeAny(w, v, props); err != nil {
+					return err
+				}
+				if err := w.WriteByte('\n'); err != nil {
+					return err
+				}
+			}
+			continue
+		}
+		if fv.Kind() == reflect.Map {
+			// Map fields are rendered as a repeated struct with key/value fields.
+			keys := fv.MapKeys()
+			sort.Sort(mapKeys(keys))
+			for _, key := range keys {
+				val := fv.MapIndex(key)
+				if err := writeName(w, props); err != nil {
+					return err
+				}
+				if !w.compact {
+					if err := w.WriteByte(' '); err != nil {
+						return err
+					}
+				}
+				// open struct
+				if err := w.WriteByte('<'); err != nil {
+					return err
+				}
+				if !w.compact {
+					if err := w.WriteByte('\n'); err != nil {
+						return err
+					}
+				}
+				w.indent()
+				// key
+				if _, err := w.WriteString("key:"); err != nil {
+					return err
+				}
+				if !w.compact {
+					if err := w.WriteByte(' '); err != nil {
+						return err
+					}
+				}
+				if err := tm.writeAny(w, key, props.mkeyprop); err != nil {
+					return err
+				}
+				if err := w.WriteByte('\n'); err != nil {
+					return err
+				}
+				// nil values aren't legal, but we can avoid panicking because of them.
+				if val.Kind() != reflect.Ptr || !val.IsNil() {
+					// value
+					if _, err := w.WriteString("value:"); err != nil {
+						return err
+					}
+					if !w.compact {
+						if err := w.WriteByte(' '); err != nil {
+							return err
+						}
+					}
+					if err := tm.writeAny(w, val, props.mvalprop); err != nil {
+						return err
+					}
+					if err := w.WriteByte('\n'); err != nil {
+						return err
+					}
+				}
+				// close struct
+				w.unindent()
+				if err := w.WriteByte('>'); err != nil {
+					return err
+				}
+				if err := w.WriteByte('\n'); err != nil {
+					return err
+				}
+			}
+			continue
+		}
+		if props.proto3 && fv.Kind() == reflect.Slice && fv.Len() == 0 {
+			// empty bytes field
+			continue
+		}
+		if fv.Kind() != reflect.Ptr && fv.Kind() != reflect.Slice {
+			// proto3 non-repeated scalar field; skip if zero value
+			if isProto3Zero(fv) {
+				continue
+			}
+		}
+
+		if fv.Kind() == reflect.Interface {
+			// Check if it is a oneof.
+			if st.Field(i).Tag.Get("protobuf_oneof") != "" {
+				// fv is nil, or holds a pointer to generated struct.
+				// That generated struct has exactly one field,
+				// which has a protobuf struct tag.
+				if fv.IsNil() {
+					continue
+				}
+				inner := fv.Elem().Elem() // interface -> *T -> T
+				tag := inner.Type().Field(0).Tag.Get("protobuf")
+				props = new(Properties) // Overwrite the outer props var, but not its pointee.
+				props.Parse(tag)
+				// Write the value in the oneof, not the oneof itself.
+				fv = inner.Field(0)
+
+				// Special case to cope with malformed messages gracefully:
+				// If the value in the oneof is a nil pointer, don't panic
+				// in writeAny.
+				if fv.Kind() == reflect.Ptr && fv.IsNil() {
+					// Use errors.New so writeAny won't render quotes.
+					msg := errors.New("/* nil */")
+					fv = reflect.ValueOf(&msg).Elem()
+				}
+			}
+		}
+
+		if err := writeName(w, props); err != nil {
+			return err
+		}
+		if !w.compact {
+			if err := w.WriteByte(' '); err != nil {
+				return err
+			}
+		}
+		if b, ok := fv.Interface().(raw); ok {
+			if err := writeRaw(w, b.Bytes()); err != nil {
+				return err
+			}
+			continue
+		}
+
+		// Enums have a String method, so writeAny will work fine.
+		if err := tm.writeAny(w, fv, props); err != nil {
+			return err
+		}
+
+		if err := w.WriteByte('\n'); err != nil {
+			return err
+		}
+	}
+
+	// Extensions (the XXX_extensions field).
+	pv := sv.Addr()
+	if _, ok := extendable(pv.Interface()); ok {
+		if err := tm.writeExtensions(w, pv); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// writeRaw writes an uninterpreted raw message.
+func writeRaw(w *textWriter, b []byte) error {
+	if err := w.WriteByte('<'); err != nil {
+		return err
+	}
+	if !w.compact {
+		if err := w.WriteByte('\n'); err != nil {
+			return err
+		}
+	}
+	w.indent()
+	if err := writeUnknownStruct(w, b); err != nil {
+		return err
+	}
+	w.unindent()
+	if err := w.WriteByte('>'); err != nil {
+		return err
+	}
+	return nil
+}
+
+// writeAny writes an arbitrary field.
+func (tm *TextMarshaler) writeAny(w *textWriter, v reflect.Value, props *Properties) error {
+	v = reflect.Indirect(v)
+
+	// Floats have special cases.
+	if v.Kind() == reflect.Float32 || v.Kind() == reflect.Float64 {
+		x := v.Float()
+		var b []byte
+		switch {
+		case math.IsInf(x, 1):
+			b = posInf
+		case math.IsInf(x, -1):
+			b = negInf
+		case math.IsNaN(x):
+			b = nan
+		}
+		if b != nil {
+			_, err := w.Write(b)
+			return err
+		}
+		// Other values are handled below.
+	}
+
+	// We don't attempt to serialise every possible value type; only those
+	// that can occur in protocol buffers.
+	switch v.Kind() {
+	case reflect.Slice:
+		// Should only be a []byte; repeated fields are handled in writeStruct.
+		if err := writeString(w, string(v.Bytes())); err != nil {
+			return err
+		}
+	case reflect.String:
+		if err := writeString(w, v.String()); err != nil {
+			return err
+		}
+	case reflect.Struct:
+		// Required/optional group/message.
+		var bra, ket byte = '<', '>'
+		if props != nil && props.Wire == "group" {
+			bra, ket = '{', '}'
+		}
+		if err := w.WriteByte(bra); err != nil {
+			return err
+		}
+		if !w.compact {
+			if err := w.WriteByte('\n'); err != nil {
+				return err
+			}
+		}
+		w.indent()
+		if etm, ok := v.Interface().(encoding.TextMarshaler); ok {
+			text, err := etm.MarshalText()
+			if err != nil {
+				return err
+			}
+			if _, err = w.Write(text); err != nil {
+				return err
+			}
+		} else if err := tm.writeStruct(w, v); err != nil {
+			return err
+		}
+		w.unindent()
+		if err := w.WriteByte(ket); err != nil {
+			return err
+		}
+	default:
+		_, err := fmt.Fprint(w, v.Interface())
+		return err
+	}
+	return nil
+}
+
+// equivalent to C's isprint.
+func isprint(c byte) bool {
+	return c >= 0x20 && c < 0x7f
+}
+
+// writeString writes a string in the protocol buffer text format.
+// It is similar to strconv.Quote except we don't use Go escape sequences,
+// we treat the string as a byte sequence, and we use octal escapes.
+// These differences are to maintain interoperability with the other
+// languages' implementations of the text format.
+func writeString(w *textWriter, s string) error {
+	// use WriteByte here to get any needed indent
+	if err := w.WriteByte('"'); err != nil {
+		return err
+	}
+	// Loop over the bytes, not the runes.
+	for i := 0; i < len(s); i++ {
+		var err error
+		// Divergence from C++: we don't escape apostrophes.
+		// There's no need to escape them, and the C++ parser
+		// copes with a naked apostrophe.
+		switch c := s[i]; c {
+		case '\n':
+			_, err = w.w.Write(backslashN)
+		case '\r':
+			_, err = w.w.Write(backslashR)
+		case '\t':
+			_, err = w.w.Write(backslashT)
+		case '"':
+			_, err = w.w.Write(backslashDQ)
+		case '\\':
+			_, err = w.w.Write(backslashBS)
+		default:
+			if isprint(c) {
+				err = w.w.WriteByte(c)
+			} else {
+				_, err = fmt.Fprintf(w.w, "\\%03o", c)
+			}
+		}
+		if err != nil {
+			return err
+		}
+	}
+	return w.WriteByte('"')
+}
+
+func writeUnknownStruct(w *textWriter, data []byte) (err error) {
+	if !w.compact {
+		if _, err := fmt.Fprintf(w, "/* %d unknown bytes */\n", len(data)); err != nil {
+			return err
+		}
+	}
+	b := NewBuffer(data)
+	for b.index < len(b.buf) {
+		x, err := b.DecodeVarint()
+		if err != nil {
+			_, err := fmt.Fprintf(w, "/* %v */\n", err)
+			return err
+		}
+		wire, tag := x&7, x>>3
+		if wire == WireEndGroup {
+			w.unindent()
+			if _, err := w.Write(endBraceNewline); err != nil {
+				return err
+			}
+			continue
+		}
+		if _, err := fmt.Fprint(w, tag); err != nil {
+			return err
+		}
+		if wire != WireStartGroup {
+			if err := w.WriteByte(':'); err != nil {
+				return err
+			}
+		}
+		if !w.compact || wire == WireStartGroup {
+			if err := w.WriteByte(' '); err != nil {
+				return err
+			}
+		}
+		switch wire {
+		case WireBytes:
+			buf, e := b.DecodeRawBytes(false)
+			if e == nil {
+				_, err = fmt.Fprintf(w, "%q", buf)
+			} else {
+				_, err = fmt.Fprintf(w, "/* %v */", e)
+			}
+		case WireFixed32:
+			x, err = b.DecodeFixed32()
+			err = writeUnknownInt(w, x, err)
+		case WireFixed64:
+			x, err = b.DecodeFixed64()
+			err = writeUnknownInt(w, x, err)
+		case WireStartGroup:
+			err = w.WriteByte('{')
+			w.indent()
+		case WireVarint:
+			x, err = b.DecodeVarint()
+			err = writeUnknownInt(w, x, err)
+		default:
+			_, err = fmt.Fprintf(w, "/* unknown wire type %d */", wire)
+		}
+		if err != nil {
+			return err
+		}
+		if err = w.WriteByte('\n'); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func writeUnknownInt(w *textWriter, x uint64, err error) error {
+	if err == nil {
+		_, err = fmt.Fprint(w, x)
+	} else {
+		_, err = fmt.Fprintf(w, "/* %v */", err)
+	}
+	return err
+}
+
+type int32Slice []int32
+
+func (s int32Slice) Len() int           { return len(s) }
+func (s int32Slice) Less(i, j int) bool { return s[i] < s[j] }
+func (s int32Slice) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
+
+// writeExtensions writes all the extensions in pv.
+// pv is assumed to be a pointer to a protocol message struct that is extendable.
+func (tm *TextMarshaler) writeExtensions(w *textWriter, pv reflect.Value) error {
+	emap := extensionMaps[pv.Type().Elem()]
+	ep, _ := extendable(pv.Interface())
+
+	// Order the extensions by ID.
+	// This isn't strictly necessary, but it will give us
+	// canonical output, which will also make testing easier.
+	m, mu := ep.extensionsRead()
+	if m == nil {
+		return nil
+	}
+	mu.Lock()
+	ids := make([]int32, 0, len(m))
+	for id := range m {
+		ids = append(ids, id)
+	}
+	sort.Sort(int32Slice(ids))
+	mu.Unlock()
+
+	for _, extNum := range ids {
+		ext := m[extNum]
+		var desc *ExtensionDesc
+		if emap != nil {
+			desc = emap[extNum]
+		}
+		if desc == nil {
+			// Unknown extension.
+			if err := writeUnknownStruct(w, ext.enc); err != nil {
+				return err
+			}
+			continue
+		}
+
+		pb, err := GetExtension(ep, desc)
+		if err != nil {
+			return fmt.Errorf("failed getting extension: %v", err)
+		}
+
+		// Repeated extensions will appear as a slice.
+		if !desc.repeated() {
+			if err := tm.writeExtension(w, desc.Name, pb); err != nil {
+				return err
+			}
+		} else {
+			v := reflect.ValueOf(pb)
+			for i := 0; i < v.Len(); i++ {
+				if err := tm.writeExtension(w, desc.Name, v.Index(i).Interface()); err != nil {
+					return err
+				}
+			}
+		}
+	}
+	return nil
+}
+
+func (tm *TextMarshaler) writeExtension(w *textWriter, name string, pb interface{}) error {
+	if _, err := fmt.Fprintf(w, "[%s]:", name); err != nil {
+		return err
+	}
+	if !w.compact {
+		if err := w.WriteByte(' '); err != nil {
+			return err
+		}
+	}
+	if err := tm.writeAny(w, reflect.ValueOf(pb), nil); err != nil {
+		return err
+	}
+	if err := w.WriteByte('\n'); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (w *textWriter) writeIndent() {
+	if !w.complete {
+		return
+	}
+	remain := w.ind * 2
+	for remain > 0 {
+		n := remain
+		if n > len(spaces) {
+			n = len(spaces)
+		}
+		w.w.Write(spaces[:n])
+		remain -= n
+	}
+	w.complete = false
+}
+
+// TextMarshaler is a configurable text format marshaler.
+type TextMarshaler struct {
+	Compact   bool // use compact text format (one line).
+	ExpandAny bool // expand google.protobuf.Any messages of known types
+}
+
+// Marshal writes a given protocol buffer in text format.
+// The only errors returned are from w.
+func (tm *TextMarshaler) Marshal(w io.Writer, pb Message) error {
+	val := reflect.ValueOf(pb)
+	if pb == nil || val.IsNil() {
+		w.Write([]byte("<nil>"))
+		return nil
+	}
+	var bw *bufio.Writer
+	ww, ok := w.(writer)
+	if !ok {
+		bw = bufio.NewWriter(w)
+		ww = bw
+	}
+	aw := &textWriter{
+		w:        ww,
+		complete: true,
+		compact:  tm.Compact,
+	}
+
+	if etm, ok := pb.(encoding.TextMarshaler); ok {
+		text, err := etm.MarshalText()
+		if err != nil {
+			return err
+		}
+		if _, err = aw.Write(text); err != nil {
+			return err
+		}
+		if bw != nil {
+			return bw.Flush()
+		}
+		return nil
+	}
+	// Dereference the received pointer so we don't have outer < and >.
+	v := reflect.Indirect(val)
+	if err := tm.writeStruct(aw, v); err != nil {
+		return err
+	}
+	if bw != nil {
+		return bw.Flush()
+	}
+	return nil
+}
+
+// Text is the same as Marshal, but returns the string directly.
+func (tm *TextMarshaler) Text(pb Message) string {
+	var buf bytes.Buffer
+	tm.Marshal(&buf, pb)
+	return buf.String()
+}
+
+var (
+	defaultTextMarshaler = TextMarshaler{}
+	compactTextMarshaler = TextMarshaler{Compact: true}
+)
+
+// TODO: consider removing some of the Marshal functions below.
+
+// MarshalText writes a given protocol buffer in text format.
+// The only errors returned are from w.
+func MarshalText(w io.Writer, pb Message) error { return defaultTextMarshaler.Marshal(w, pb) }
+
+// MarshalTextString is the same as MarshalText, but returns the string directly.
+func MarshalTextString(pb Message) string { return defaultTextMarshaler.Text(pb) }
+
+// CompactText writes a given protocol buffer in compact text format (one line).
+func CompactText(w io.Writer, pb Message) error { return compactTextMarshaler.Marshal(w, pb) }
+
+// CompactTextString is the same as CompactText, but returns the string directly.
+func CompactTextString(pb Message) string { return compactTextMarshaler.Text(pb) }
diff --git a/vendor/github.com/golang/protobuf/proto/text_parser.go b/vendor/github.com/golang/protobuf/proto/text_parser.go
new file mode 100644
index 000000000..61f83c1e1
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/text_parser.go
@@ -0,0 +1,895 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto
+
+// Functions for parsing the Text protocol buffer format.
+// TODO: message sets.
+
+import (
+	"encoding"
+	"errors"
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+	"unicode/utf8"
+)
+
+// Error string emitted when deserializing Any and fields are already set
+const anyRepeatedlyUnpacked = "Any message unpacked multiple times, or %q already set"
+
+type ParseError struct {
+	Message string
+	Line    int // 1-based line number
+	Offset  int // 0-based byte offset from start of input
+}
+
+func (p *ParseError) Error() string {
+	if p.Line == 1 {
+		// show offset only for first line
+		return fmt.Sprintf("line 1.%d: %v", p.Offset, p.Message)
+	}
+	return fmt.Sprintf("line %d: %v", p.Line, p.Message)
+}
+
+type token struct {
+	value    string
+	err      *ParseError
+	line     int    // line number
+	offset   int    // byte number from start of input, not start of line
+	unquoted string // the unquoted version of value, if it was a quoted string
+}
+
+func (t *token) String() string {
+	if t.err == nil {
+		return fmt.Sprintf("%q (line=%d, offset=%d)", t.value, t.line, t.offset)
+	}
+	return fmt.Sprintf("parse error: %v", t.err)
+}
+
+type textParser struct {
+	s            string // remaining input
+	done         bool   // whether the parsing is finished (success or error)
+	backed       bool   // whether back() was called
+	offset, line int
+	cur          token
+}
+
+func newTextParser(s string) *textParser {
+	p := new(textParser)
+	p.s = s
+	p.line = 1
+	p.cur.line = 1
+	return p
+}
+
+func (p *textParser) errorf(format string, a ...interface{}) *ParseError {
+	pe := &ParseError{fmt.Sprintf(format, a...), p.cur.line, p.cur.offset}
+	p.cur.err = pe
+	p.done = true
+	return pe
+}
+
+// Numbers and identifiers are matched by [-+._A-Za-z0-9]
+func isIdentOrNumberChar(c byte) bool {
+	switch {
+	case 'A' <= c && c <= 'Z', 'a' <= c && c <= 'z':
+		return true
+	case '0' <= c && c <= '9':
+		return true
+	}
+	switch c {
+	case '-', '+', '.', '_':
+		return true
+	}
+	return false
+}
+
+func isWhitespace(c byte) bool {
+	switch c {
+	case ' ', '\t', '\n', '\r':
+		return true
+	}
+	return false
+}
+
+func isQuote(c byte) bool {
+	switch c {
+	case '"', '\'':
+		return true
+	}
+	return false
+}
+
+func (p *textParser) skipWhitespace() {
+	i := 0
+	for i < len(p.s) && (isWhitespace(p.s[i]) || p.s[i] == '#') {
+		if p.s[i] == '#' {
+			// comment; skip to end of line or input
+			for i < len(p.s) && p.s[i] != '\n' {
+				i++
+			}
+			if i == len(p.s) {
+				break
+			}
+		}
+		if p.s[i] == '\n' {
+			p.line++
+		}
+		i++
+	}
+	p.offset += i
+	p.s = p.s[i:len(p.s)]
+	if len(p.s) == 0 {
+		p.done = true
+	}
+}
+
+func (p *textParser) advance() {
+	// Skip whitespace
+	p.skipWhitespace()
+	if p.done {
+		return
+	}
+
+	// Start of non-whitespace
+	p.cur.err = nil
+	p.cur.offset, p.cur.line = p.offset, p.line
+	p.cur.unquoted = ""
+	switch p.s[0] {
+	case '<', '>', '{', '}', ':', '[', ']', ';', ',', '/':
+		// Single symbol
+		p.cur.value, p.s = p.s[0:1], p.s[1:len(p.s)]
+	case '"', '\'':
+		// Quoted string
+		i := 1
+		for i < len(p.s) && p.s[i] != p.s[0] && p.s[i] != '\n' {
+			if p.s[i] == '\\' && i+1 < len(p.s) {
+				// skip escaped char
+				i++
+			}
+			i++
+		}
+		if i >= len(p.s) || p.s[i] != p.s[0] {
+			p.errorf("unmatched quote")
+			return
+		}
+		unq, err := unquoteC(p.s[1:i], rune(p.s[0]))
+		if err != nil {
+			p.errorf("invalid quoted string %s: %v", p.s[0:i+1], err)
+			return
+		}
+		p.cur.value, p.s = p.s[0:i+1], p.s[i+1:len(p.s)]
+		p.cur.unquoted = unq
+	default:
+		i := 0
+		for i < len(p.s) && isIdentOrNumberChar(p.s[i]) {
+			i++
+		}
+		if i == 0 {
+			p.errorf("unexpected byte %#x", p.s[0])
+			return
+		}
+		p.cur.value, p.s = p.s[0:i], p.s[i:len(p.s)]
+	}
+	p.offset += len(p.cur.value)
+}
+
+var (
+	errBadUTF8 = errors.New("proto: bad UTF-8")
+	errBadHex  = errors.New("proto: bad hexadecimal")
+)
+
+func unquoteC(s string, quote rune) (string, error) {
+	// This is based on C++'s tokenizer.cc.
+	// Despite its name, this is *not* parsing C syntax.
+	// For instance, "\0" is an invalid quoted string.
+
+	// Avoid allocation in trivial cases.
+	simple := true
+	for _, r := range s {
+		if r == '\\' || r == quote {
+			simple = false
+			break
+		}
+	}
+	if simple {
+		return s, nil
+	}
+
+	buf := make([]byte, 0, 3*len(s)/2)
+	for len(s) > 0 {
+		r, n := utf8.DecodeRuneInString(s)
+		if r == utf8.RuneError && n == 1 {
+			return "", errBadUTF8
+		}
+		s = s[n:]
+		if r != '\\' {
+			if r < utf8.RuneSelf {
+				buf = append(buf, byte(r))
+			} else {
+				buf = append(buf, string(r)...)
+			}
+			continue
+		}
+
+		ch, tail, err := unescape(s)
+		if err != nil {
+			return "", err
+		}
+		buf = append(buf, ch...)
+		s = tail
+	}
+	return string(buf), nil
+}
+
+func unescape(s string) (ch string, tail string, err error) {
+	r, n := utf8.DecodeRuneInString(s)
+	if r == utf8.RuneError && n == 1 {
+		return "", "", errBadUTF8
+	}
+	s = s[n:]
+	switch r {
+	case 'a':
+		return "\a", s, nil
+	case 'b':
+		return "\b", s, nil
+	case 'f':
+		return "\f", s, nil
+	case 'n':
+		return "\n", s, nil
+	case 'r':
+		return "\r", s, nil
+	case 't':
+		return "\t", s, nil
+	case 'v':
+		return "\v", s, nil
+	case '?':
+		return "?", s, nil // trigraph workaround
+	case '\'', '"', '\\':
+		return string(r), s, nil
+	case '0', '1', '2', '3', '4', '5', '6', '7', 'x', 'X':
+		if len(s) < 2 {
+			return "", "", fmt.Errorf(`\%c requires 2 following digits`, r)
+		}
+		base := 8
+		ss := s[:2]
+		s = s[2:]
+		if r == 'x' || r == 'X' {
+			base = 16
+		} else {
+			ss = string(r) + ss
+		}
+		i, err := strconv.ParseUint(ss, base, 8)
+		if err != nil {
+			return "", "", err
+		}
+		return string([]byte{byte(i)}), s, nil
+	case 'u', 'U':
+		n := 4
+		if r == 'U' {
+			n = 8
+		}
+		if len(s) < n {
+			return "", "", fmt.Errorf(`\%c requires %d digits`, r, n)
+		}
+
+		bs := make([]byte, n/2)
+		for i := 0; i < n; i += 2 {
+			a, ok1 := unhex(s[i])
+			b, ok2 := unhex(s[i+1])
+			if !ok1 || !ok2 {
+				return "", "", errBadHex
+			}
+			bs[i/2] = a<<4 | b
+		}
+		s = s[n:]
+		return string(bs), s, nil
+	}
+	return "", "", fmt.Errorf(`unknown escape \%c`, r)
+}
+
+// Adapted from src/pkg/strconv/quote.go.
+func unhex(b byte) (v byte, ok bool) {
+	switch {
+	case '0' <= b && b <= '9':
+		return b - '0', true
+	case 'a' <= b && b <= 'f':
+		return b - 'a' + 10, true
+	case 'A' <= b && b <= 'F':
+		return b - 'A' + 10, true
+	}
+	return 0, false
+}
+
+// Back off the parser by one token. Can only be done between calls to next().
+// It makes the next advance() a no-op.
+func (p *textParser) back() { p.backed = true }
+
+// Advances the parser and returns the new current token.
+func (p *textParser) next() *token {
+	if p.backed || p.done {
+		p.backed = false
+		return &p.cur
+	}
+	p.advance()
+	if p.done {
+		p.cur.value = ""
+	} else if len(p.cur.value) > 0 && isQuote(p.cur.value[0]) {
+		// Look for multiple quoted strings separated by whitespace,
+		// and concatenate them.
+		cat := p.cur
+		for {
+			p.skipWhitespace()
+			if p.done || !isQuote(p.s[0]) {
+				break
+			}
+			p.advance()
+			if p.cur.err != nil {
+				return &p.cur
+			}
+			cat.value += " " + p.cur.value
+			cat.unquoted += p.cur.unquoted
+		}
+		p.done = false // parser may have seen EOF, but we want to return cat
+		p.cur = cat
+	}
+	return &p.cur
+}
+
+func (p *textParser) consumeToken(s string) error {
+	tok := p.next()
+	if tok.err != nil {
+		return tok.err
+	}
+	if tok.value != s {
+		p.back()
+		return p.errorf("expected %q, found %q", s, tok.value)
+	}
+	return nil
+}
+
+// Return a RequiredNotSetError indicating which required field was not set.
+func (p *textParser) missingRequiredFieldError(sv reflect.Value) *RequiredNotSetError {
+	st := sv.Type()
+	sprops := GetProperties(st)
+	for i := 0; i < st.NumField(); i++ {
+		if !isNil(sv.Field(i)) {
+			continue
+		}
+
+		props := sprops.Prop[i]
+		if props.Required {
+			return &RequiredNotSetError{fmt.Sprintf("%v.%v", st, props.OrigName)}
+		}
+	}
+	return &RequiredNotSetError{fmt.Sprintf("%v.<unknown field name>", st)} // should not happen
+}
+
+// Returns the index in the struct for the named field, as well as the parsed tag properties.
+func structFieldByName(sprops *StructProperties, name string) (int, *Properties, bool) {
+	i, ok := sprops.decoderOrigNames[name]
+	if ok {
+		return i, sprops.Prop[i], true
+	}
+	return -1, nil, false
+}
+
+// Consume a ':' from the input stream (if the next token is a colon),
+// returning an error if a colon is needed but not present.
+func (p *textParser) checkForColon(props *Properties, typ reflect.Type) *ParseError {
+	tok := p.next()
+	if tok.err != nil {
+		return tok.err
+	}
+	if tok.value != ":" {
+		// Colon is optional when the field is a group or message.
+		needColon := true
+		switch props.Wire {
+		case "group":
+			needColon = false
+		case "bytes":
+			// A "bytes" field is either a message, a string, or a repeated field;
+			// those three become *T, *string and []T respectively, so we can check for
+			// this field being a pointer to a non-string.
+			if typ.Kind() == reflect.Ptr {
+				// *T or *string
+				if typ.Elem().Kind() == reflect.String {
+					break
+				}
+			} else if typ.Kind() == reflect.Slice {
+				// []T or []*T
+				if typ.Elem().Kind() != reflect.Ptr {
+					break
+				}
+			} else if typ.Kind() == reflect.String {
+				// The proto3 exception is for a string field,
+				// which requires a colon.
+				break
+			}
+			needColon = false
+		}
+		if needColon {
+			return p.errorf("expected ':', found %q", tok.value)
+		}
+		p.back()
+	}
+	return nil
+}
+
+func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
+	st := sv.Type()
+	sprops := GetProperties(st)
+	reqCount := sprops.reqCount
+	var reqFieldErr error
+	fieldSet := make(map[string]bool)
+	// A struct is a sequence of "name: value", terminated by one of
+	// '>' or '}', or the end of the input.  A name may also be
+	// "[extension]" or "[type/url]".
+	//
+	// The whole struct can also be an expanded Any message, like:
+	// [type/url] < ... struct contents ... >
+	for {
+		tok := p.next()
+		if tok.err != nil {
+			return tok.err
+		}
+		if tok.value == terminator {
+			break
+		}
+		if tok.value == "[" {
+			// Looks like an extension or an Any.
+			//
+			// TODO: Check whether we need to handle
+			// namespace rooted names (e.g. ".something.Foo").
+			extName, err := p.consumeExtName()
+			if err != nil {
+				return err
+			}
+
+			if s := strings.LastIndex(extName, "/"); s >= 0 {
+				// If it contains a slash, it's an Any type URL.
+				messageName := extName[s+1:]
+				mt := MessageType(messageName)
+				if mt == nil {
+					return p.errorf("unrecognized message %q in google.protobuf.Any", messageName)
+				}
+				tok = p.next()
+				if tok.err != nil {
+					return tok.err
+				}
+				// consume an optional colon
+				if tok.value == ":" {
+					tok = p.next()
+					if tok.err != nil {
+						return tok.err
+					}
+				}
+				var terminator string
+				switch tok.value {
+				case "<":
+					terminator = ">"
+				case "{":
+					terminator = "}"
+				default:
+					return p.errorf("expected '{' or '<', found %q", tok.value)
+				}
+				v := reflect.New(mt.Elem())
+				if pe := p.readStruct(v.Elem(), terminator); pe != nil {
+					return pe
+				}
+				b, err := Marshal(v.Interface().(Message))
+				if err != nil {
+					return p.errorf("failed to marshal message of type %q: %v", messageName, err)
+				}
+				if fieldSet["type_url"] {
+					return p.errorf(anyRepeatedlyUnpacked, "type_url")
+				}
+				if fieldSet["value"] {
+					return p.errorf(anyRepeatedlyUnpacked, "value")
+				}
+				sv.FieldByName("TypeUrl").SetString(extName)
+				sv.FieldByName("Value").SetBytes(b)
+				fieldSet["type_url"] = true
+				fieldSet["value"] = true
+				continue
+			}
+
+			var desc *ExtensionDesc
+			// This could be faster, but it's functional.
+			// TODO: Do something smarter than a linear scan.
+			for _, d := range RegisteredExtensions(reflect.New(st).Interface().(Message)) {
+				if d.Name == extName {
+					desc = d
+					break
+				}
+			}
+			if desc == nil {
+				return p.errorf("unrecognized extension %q", extName)
+			}
+
+			props := &Properties{}
+			props.Parse(desc.Tag)
+
+			typ := reflect.TypeOf(desc.ExtensionType)
+			if err := p.checkForColon(props, typ); err != nil {
+				return err
+			}
+
+			rep := desc.repeated()
+
+			// Read the extension structure, and set it in
+			// the value we're constructing.
+			var ext reflect.Value
+			if !rep {
+				ext = reflect.New(typ).Elem()
+			} else {
+				ext = reflect.New(typ.Elem()).Elem()
+			}
+			if err := p.readAny(ext, props); err != nil {
+				if _, ok := err.(*RequiredNotSetError); !ok {
+					return err
+				}
+				reqFieldErr = err
+			}
+			ep := sv.Addr().Interface().(Message)
+			if !rep {
+				SetExtension(ep, desc, ext.Interface())
+			} else {
+				old, err := GetExtension(ep, desc)
+				var sl reflect.Value
+				if err == nil {
+					sl = reflect.ValueOf(old) // existing slice
+				} else {
+					sl = reflect.MakeSlice(typ, 0, 1)
+				}
+				sl = reflect.Append(sl, ext)
+				SetExtension(ep, desc, sl.Interface())
+			}
+			if err := p.consumeOptionalSeparator(); err != nil {
+				return err
+			}
+			continue
+		}
+
+		// This is a normal, non-extension field.
+		name := tok.value
+		var dst reflect.Value
+		fi, props, ok := structFieldByName(sprops, name)
+		if ok {
+			dst = sv.Field(fi)
+		} else if oop, ok := sprops.OneofTypes[name]; ok {
+			// It is a oneof.
+			props = oop.Prop
+			nv := reflect.New(oop.Type.Elem())
+			dst = nv.Elem().Field(0)
+			field := sv.Field(oop.Field)
+			if !field.IsNil() {
+				return p.errorf("field '%s' would overwrite already parsed oneof '%s'", name, sv.Type().Field(oop.Field).Name)
+			}
+			field.Set(nv)
+		}
+		if !dst.IsValid() {
+			return p.errorf("unknown field name %q in %v", name, st)
+		}
+
+		if dst.Kind() == reflect.Map {
+			// Consume any colon.
+			if err := p.checkForColon(props, dst.Type()); err != nil {
+				return err
+			}
+
+			// Construct the map if it doesn't already exist.
+			if dst.IsNil() {
+				dst.Set(reflect.MakeMap(dst.Type()))
+			}
+			key := reflect.New(dst.Type().Key()).Elem()
+			val := reflect.New(dst.Type().Elem()).Elem()
+
+			// The map entry should be this sequence of tokens:
+			//	< key : KEY value : VALUE >
+			// However, implementations may omit key or value, and technically
+			// we should support them in any order.  See b/28924776 for a time
+			// this went wrong.
+
+			tok := p.next()
+			var terminator string
+			switch tok.value {
+			case "<":
+				terminator = ">"
+			case "{":
+				terminator = "}"
+			default:
+				return p.errorf("expected '{' or '<', found %q", tok.value)
+			}
+			for {
+				tok := p.next()
+				if tok.err != nil {
+					return tok.err
+				}
+				if tok.value == terminator {
+					break
+				}
+				switch tok.value {
+				case "key":
+					if err := p.consumeToken(":"); err != nil {
+						return err
+					}
+					if err := p.readAny(key, props.mkeyprop); err != nil {
+						return err
+					}
+					if err := p.consumeOptionalSeparator(); err != nil {
+						return err
+					}
+				case "value":
+					if err := p.checkForColon(props.mvalprop, dst.Type().Elem()); err != nil {
+						return err
+					}
+					if err := p.readAny(val, props.mvalprop); err != nil {
+						return err
+					}
+					if err := p.consumeOptionalSeparator(); err != nil {
+						return err
+					}
+				default:
+					p.back()
+					return p.errorf(`expected "key", "value", or %q, found %q`, terminator, tok.value)
+				}
+			}
+
+			dst.SetMapIndex(key, val)
+			continue
+		}
+
+		// Check that it's not already set if it's not a repeated field.
+		if !props.Repeated && fieldSet[name] {
+			return p.errorf("non-repeated field %q was repeated", name)
+		}
+
+		if err := p.checkForColon(props, dst.Type()); err != nil {
+			return err
+		}
+
+		// Parse into the field.
+		fieldSet[name] = true
+		if err := p.readAny(dst, props); err != nil {
+			if _, ok := err.(*RequiredNotSetError); !ok {
+				return err
+			}
+			reqFieldErr = err
+		}
+		if props.Required {
+			reqCount--
+		}
+
+		if err := p.consumeOptionalSeparator(); err != nil {
+			return err
+		}
+
+	}
+
+	if reqCount > 0 {
+		return p.missingRequiredFieldError(sv)
+	}
+	return reqFieldErr
+}
+
+// consumeExtName consumes extension name or expanded Any type URL and the
+// following ']'. It returns the name or URL consumed.
+func (p *textParser) consumeExtName() (string, error) {
+	tok := p.next()
+	if tok.err != nil {
+		return "", tok.err
+	}
+
+	// If extension name or type url is quoted, it's a single token.
+	if len(tok.value) > 2 && isQuote(tok.value[0]) && tok.value[len(tok.value)-1] == tok.value[0] {
+		name, err := unquoteC(tok.value[1:len(tok.value)-1], rune(tok.value[0]))
+		if err != nil {
+			return "", err
+		}
+		return name, p.consumeToken("]")
+	}
+
+	// Consume everything up to "]"
+	var parts []string
+	for tok.value != "]" {
+		parts = append(parts, tok.value)
+		tok = p.next()
+		if tok.err != nil {
+			return "", p.errorf("unrecognized type_url or extension name: %s", tok.err)
+		}
+	}
+	return strings.Join(parts, ""), nil
+}
+
+// consumeOptionalSeparator consumes an optional semicolon or comma.
+// It is used in readStruct to provide backward compatibility.
+func (p *textParser) consumeOptionalSeparator() error {
+	tok := p.next()
+	if tok.err != nil {
+		return tok.err
+	}
+	if tok.value != ";" && tok.value != "," {
+		p.back()
+	}
+	return nil
+}
+
+func (p *textParser) readAny(v reflect.Value, props *Properties) error {
+	tok := p.next()
+	if tok.err != nil {
+		return tok.err
+	}
+	if tok.value == "" {
+		return p.errorf("unexpected EOF")
+	}
+
+	switch fv := v; fv.Kind() {
+	case reflect.Slice:
+		at := v.Type()
+		if at.Elem().Kind() == reflect.Uint8 {
+			// Special case for []byte
+			if tok.value[0] != '"' && tok.value[0] != '\'' {
+				// Deliberately written out here, as the error after
+				// this switch statement would write "invalid []byte: ...",
+				// which is not as user-friendly.
+				return p.errorf("invalid string: %v", tok.value)
+			}
+			bytes := []byte(tok.unquoted)
+			fv.Set(reflect.ValueOf(bytes))
+			return nil
+		}
+		// Repeated field.
+		if tok.value == "[" {
+			// Repeated field with list notation, like [1,2,3].
+			for {
+				fv.Set(reflect.Append(fv, reflect.New(at.Elem()).Elem()))
+				err := p.readAny(fv.Index(fv.Len()-1), props)
+				if err != nil {
+					return err
+				}
+				tok := p.next()
+				if tok.err != nil {
+					return tok.err
+				}
+				if tok.value == "]" {
+					break
+				}
+				if tok.value != "," {
+					return p.errorf("Expected ']' or ',' found %q", tok.value)
+				}
+			}
+			return nil
+		}
+		// One value of the repeated field.
+		p.back()
+		fv.Set(reflect.Append(fv, reflect.New(at.Elem()).Elem()))
+		return p.readAny(fv.Index(fv.Len()-1), props)
+	case reflect.Bool:
+		// true/1/t/True or false/f/0/False.
+		switch tok.value {
+		case "true", "1", "t", "True":
+			fv.SetBool(true)
+			return nil
+		case "false", "0", "f", "False":
+			fv.SetBool(false)
+			return nil
+		}
+	case reflect.Float32, reflect.Float64:
+		v := tok.value
+		// Ignore 'f' for compatibility with output generated by C++, but don't
+		// remove 'f' when the value is "-inf" or "inf".
+		if strings.HasSuffix(v, "f") && tok.value != "-inf" && tok.value != "inf" {
+			v = v[:len(v)-1]
+		}
+		if f, err := strconv.ParseFloat(v, fv.Type().Bits()); err == nil {
+			fv.SetFloat(f)
+			return nil
+		}
+	case reflect.Int32:
+		if x, err := strconv.ParseInt(tok.value, 0, 32); err == nil {
+			fv.SetInt(x)
+			return nil
+		}
+
+		if len(props.Enum) == 0 {
+			break
+		}
+		m, ok := enumValueMaps[props.Enum]
+		if !ok {
+			break
+		}
+		x, ok := m[tok.value]
+		if !ok {
+			break
+		}
+		fv.SetInt(int64(x))
+		return nil
+	case reflect.Int64:
+		if x, err := strconv.ParseInt(tok.value, 0, 64); err == nil {
+			fv.SetInt(x)
+			return nil
+		}
+
+	case reflect.Ptr:
+		// A basic field (indirected through pointer), or a repeated message/group
+		p.back()
+		fv.Set(reflect.New(fv.Type().Elem()))
+		return p.readAny(fv.Elem(), props)
+	case reflect.String:
+		if tok.value[0] == '"' || tok.value[0] == '\'' {
+			fv.SetString(tok.unquoted)
+			return nil
+		}
+	case reflect.Struct:
+		var terminator string
+		switch tok.value {
+		case "{":
+			terminator = "}"
+		case "<":
+			terminator = ">"
+		default:
+			return p.errorf("expected '{' or '<', found %q", tok.value)
+		}
+		// TODO: Handle nested messages which implement encoding.TextUnmarshaler.
+		return p.readStruct(fv, terminator)
+	case reflect.Uint32:
+		if x, err := strconv.ParseUint(tok.value, 0, 32); err == nil {
+			fv.SetUint(uint64(x))
+			return nil
+		}
+	case reflect.Uint64:
+		if x, err := strconv.ParseUint(tok.value, 0, 64); err == nil {
+			fv.SetUint(x)
+			return nil
+		}
+	}
+	return p.errorf("invalid %v: %v", v.Type(), tok.value)
+}
+
+// UnmarshalText reads a protocol buffer in Text format. UnmarshalText resets pb
+// before starting to unmarshal, so any existing data in pb is always removed.
+// If a required field is not set and no other error occurs,
+// UnmarshalText returns *RequiredNotSetError.
+func UnmarshalText(s string, pb Message) error {
+	if um, ok := pb.(encoding.TextUnmarshaler); ok {
+		err := um.UnmarshalText([]byte(s))
+		return err
+	}
+	pb.Reset()
+	v := reflect.ValueOf(pb)
+	if pe := newTextParser(s).readStruct(v.Elem(), ""); pe != nil {
+		return pe
+	}
+	return nil
+}
diff --git a/vendor/github.com/golang/protobuf/proto/text_parser_test.go b/vendor/github.com/golang/protobuf/proto/text_parser_test.go
new file mode 100644
index 000000000..8f7cb4d27
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/text_parser_test.go
@@ -0,0 +1,673 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto_test
+
+import (
+	"math"
+	"reflect"
+	"testing"
+
+	. "github.com/golang/protobuf/proto"
+	proto3pb "github.com/golang/protobuf/proto/proto3_proto"
+	. "github.com/golang/protobuf/proto/testdata"
+)
+
+type UnmarshalTextTest struct {
+	in  string
+	err string // if "", no error expected
+	out *MyMessage
+}
+
+func buildExtStructTest(text string) UnmarshalTextTest {
+	msg := &MyMessage{
+		Count: Int32(42),
+	}
+	SetExtension(msg, E_Ext_More, &Ext{
+		Data: String("Hello, world!"),
+	})
+	return UnmarshalTextTest{in: text, out: msg}
+}
+
+func buildExtDataTest(text string) UnmarshalTextTest {
+	msg := &MyMessage{
+		Count: Int32(42),
+	}
+	SetExtension(msg, E_Ext_Text, String("Hello, world!"))
+	SetExtension(msg, E_Ext_Number, Int32(1729))
+	return UnmarshalTextTest{in: text, out: msg}
+}
+
+func buildExtRepStringTest(text string) UnmarshalTextTest {
+	msg := &MyMessage{
+		Count: Int32(42),
+	}
+	if err := SetExtension(msg, E_Greeting, []string{"bula", "hola"}); err != nil {
+		panic(err)
+	}
+	return UnmarshalTextTest{in: text, out: msg}
+}
+
+var unMarshalTextTests = []UnmarshalTextTest{
+	// Basic
+	{
+		in: " count:42\n  name:\"Dave\" ",
+		out: &MyMessage{
+			Count: Int32(42),
+			Name:  String("Dave"),
+		},
+	},
+
+	// Empty quoted string
+	{
+		in: `count:42 name:""`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Name:  String(""),
+		},
+	},
+
+	// Quoted string concatenation with double quotes
+	{
+		in: `count:42 name: "My name is "` + "\n" + `"elsewhere"`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Name:  String("My name is elsewhere"),
+		},
+	},
+
+	// Quoted string concatenation with single quotes
+	{
+		in: "count:42 name: 'My name is '\n'elsewhere'",
+		out: &MyMessage{
+			Count: Int32(42),
+			Name:  String("My name is elsewhere"),
+		},
+	},
+
+	// Quoted string concatenations with mixed quotes
+	{
+		in: "count:42 name: 'My name is '\n\"elsewhere\"",
+		out: &MyMessage{
+			Count: Int32(42),
+			Name:  String("My name is elsewhere"),
+		},
+	},
+	{
+		in: "count:42 name: \"My name is \"\n'elsewhere'",
+		out: &MyMessage{
+			Count: Int32(42),
+			Name:  String("My name is elsewhere"),
+		},
+	},
+
+	// Quoted string with escaped apostrophe
+	{
+		in: `count:42 name: "HOLIDAY - New Year\'s Day"`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Name:  String("HOLIDAY - New Year's Day"),
+		},
+	},
+
+	// Quoted string with single quote
+	{
+		in: `count:42 name: 'Roger "The Ramster" Ramjet'`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Name:  String(`Roger "The Ramster" Ramjet`),
+		},
+	},
+
+	// Quoted string with all the accepted special characters from the C++ test
+	{
+		in: `count:42 name: ` + "\"\\\"A string with \\' characters \\n and \\r newlines and \\t tabs and \\001 slashes \\\\ and  multiple   spaces\"",
+		out: &MyMessage{
+			Count: Int32(42),
+			Name:  String("\"A string with ' characters \n and \r newlines and \t tabs and \001 slashes \\ and  multiple   spaces"),
+		},
+	},
+
+	// Quoted string with quoted backslash
+	{
+		in: `count:42 name: "\\'xyz"`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Name:  String(`\'xyz`),
+		},
+	},
+
+	// Quoted string with UTF-8 bytes.
+	{
+		in: "count:42 name: '\303\277\302\201\xAB'",
+		out: &MyMessage{
+			Count: Int32(42),
+			Name:  String("\303\277\302\201\xAB"),
+		},
+	},
+
+	// Bad quoted string
+	{
+		in:  `inner: < host: "\0" >` + "\n",
+		err: `line 1.15: invalid quoted string "\0": \0 requires 2 following digits`,
+	},
+
+	// Number too large for int64
+	{
+		in:  "count: 1 others { key: 123456789012345678901 }",
+		err: "line 1.23: invalid int64: 123456789012345678901",
+	},
+
+	// Number too large for int32
+	{
+		in:  "count: 1234567890123",
+		err: "line 1.7: invalid int32: 1234567890123",
+	},
+
+	// Number in hexadecimal
+	{
+		in: "count: 0x2beef",
+		out: &MyMessage{
+			Count: Int32(0x2beef),
+		},
+	},
+
+	// Number in octal
+	{
+		in: "count: 024601",
+		out: &MyMessage{
+			Count: Int32(024601),
+		},
+	},
+
+	// Floating point number with "f" suffix
+	{
+		in: "count: 4 others:< weight: 17.0f >",
+		out: &MyMessage{
+			Count: Int32(4),
+			Others: []*OtherMessage{
+				{
+					Weight: Float32(17),
+				},
+			},
+		},
+	},
+
+	// Floating point positive infinity
+	{
+		in: "count: 4 bigfloat: inf",
+		out: &MyMessage{
+			Count:    Int32(4),
+			Bigfloat: Float64(math.Inf(1)),
+		},
+	},
+
+	// Floating point negative infinity
+	{
+		in: "count: 4 bigfloat: -inf",
+		out: &MyMessage{
+			Count:    Int32(4),
+			Bigfloat: Float64(math.Inf(-1)),
+		},
+	},
+
+	// Number too large for float32
+	{
+		in:  "others:< weight: 12345678901234567890123456789012345678901234567890 >",
+		err: "line 1.17: invalid float32: 12345678901234567890123456789012345678901234567890",
+	},
+
+	// Number posing as a quoted string
+	{
+		in:  `inner: < host: 12 >` + "\n",
+		err: `line 1.15: invalid string: 12`,
+	},
+
+	// Quoted string posing as int32
+	{
+		in:  `count: "12"`,
+		err: `line 1.7: invalid int32: "12"`,
+	},
+
+	// Quoted string posing a float32
+	{
+		in:  `others:< weight: "17.4" >`,
+		err: `line 1.17: invalid float32: "17.4"`,
+	},
+
+	// Enum
+	{
+		in: `count:42 bikeshed: BLUE`,
+		out: &MyMessage{
+			Count:    Int32(42),
+			Bikeshed: MyMessage_BLUE.Enum(),
+		},
+	},
+
+	// Repeated field
+	{
+		in: `count:42 pet: "horsey" pet:"bunny"`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Pet:   []string{"horsey", "bunny"},
+		},
+	},
+
+	// Repeated field with list notation
+	{
+		in: `count:42 pet: ["horsey", "bunny"]`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Pet:   []string{"horsey", "bunny"},
+		},
+	},
+
+	// Repeated message with/without colon and <>/{}
+	{
+		in: `count:42 others:{} others{} others:<> others:{}`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Others: []*OtherMessage{
+				{},
+				{},
+				{},
+				{},
+			},
+		},
+	},
+
+	// Missing colon for inner message
+	{
+		in: `count:42 inner < host: "cauchy.syd" >`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Inner: &InnerMessage{
+				Host: String("cauchy.syd"),
+			},
+		},
+	},
+
+	// Missing colon for string field
+	{
+		in:  `name "Dave"`,
+		err: `line 1.5: expected ':', found "\"Dave\""`,
+	},
+
+	// Missing colon for int32 field
+	{
+		in:  `count 42`,
+		err: `line 1.6: expected ':', found "42"`,
+	},
+
+	// Missing required field
+	{
+		in:  `name: "Pawel"`,
+		err: `proto: required field "testdata.MyMessage.count" not set`,
+		out: &MyMessage{
+			Name: String("Pawel"),
+		},
+	},
+
+	// Missing required field in a required submessage
+	{
+		in:  `count: 42 we_must_go_deeper < leo_finally_won_an_oscar <> >`,
+		err: `proto: required field "testdata.InnerMessage.host" not set`,
+		out: &MyMessage{
+			Count:          Int32(42),
+			WeMustGoDeeper: &RequiredInnerMessage{LeoFinallyWonAnOscar: &InnerMessage{}},
+		},
+	},
+
+	// Repeated non-repeated field
+	{
+		in:  `name: "Rob" name: "Russ"`,
+		err: `line 1.12: non-repeated field "name" was repeated`,
+	},
+
+	// Group
+	{
+		in: `count: 17 SomeGroup { group_field: 12 }`,
+		out: &MyMessage{
+			Count: Int32(17),
+			Somegroup: &MyMessage_SomeGroup{
+				GroupField: Int32(12),
+			},
+		},
+	},
+
+	// Semicolon between fields
+	{
+		in: `count:3;name:"Calvin"`,
+		out: &MyMessage{
+			Count: Int32(3),
+			Name:  String("Calvin"),
+		},
+	},
+	// Comma between fields
+	{
+		in: `count:4,name:"Ezekiel"`,
+		out: &MyMessage{
+			Count: Int32(4),
+			Name:  String("Ezekiel"),
+		},
+	},
+
+	// Boolean false
+	{
+		in: `count:42 inner { host: "example.com" connected: false }`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Inner: &InnerMessage{
+				Host:      String("example.com"),
+				Connected: Bool(false),
+			},
+		},
+	},
+	// Boolean true
+	{
+		in: `count:42 inner { host: "example.com" connected: true }`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Inner: &InnerMessage{
+				Host:      String("example.com"),
+				Connected: Bool(true),
+			},
+		},
+	},
+	// Boolean 0
+	{
+		in: `count:42 inner { host: "example.com" connected: 0 }`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Inner: &InnerMessage{
+				Host:      String("example.com"),
+				Connected: Bool(false),
+			},
+		},
+	},
+	// Boolean 1
+	{
+		in: `count:42 inner { host: "example.com" connected: 1 }`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Inner: &InnerMessage{
+				Host:      String("example.com"),
+				Connected: Bool(true),
+			},
+		},
+	},
+	// Boolean f
+	{
+		in: `count:42 inner { host: "example.com" connected: f }`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Inner: &InnerMessage{
+				Host:      String("example.com"),
+				Connected: Bool(false),
+			},
+		},
+	},
+	// Boolean t
+	{
+		in: `count:42 inner { host: "example.com" connected: t }`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Inner: &InnerMessage{
+				Host:      String("example.com"),
+				Connected: Bool(true),
+			},
+		},
+	},
+	// Boolean False
+	{
+		in: `count:42 inner { host: "example.com" connected: False }`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Inner: &InnerMessage{
+				Host:      String("example.com"),
+				Connected: Bool(false),
+			},
+		},
+	},
+	// Boolean True
+	{
+		in: `count:42 inner { host: "example.com" connected: True }`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Inner: &InnerMessage{
+				Host:      String("example.com"),
+				Connected: Bool(true),
+			},
+		},
+	},
+
+	// Extension
+	buildExtStructTest(`count: 42 [testdata.Ext.more]:<data:"Hello, world!" >`),
+	buildExtStructTest(`count: 42 [testdata.Ext.more] {data:"Hello, world!"}`),
+	buildExtDataTest(`count: 42 [testdata.Ext.text]:"Hello, world!" [testdata.Ext.number]:1729`),
+	buildExtRepStringTest(`count: 42 [testdata.greeting]:"bula" [testdata.greeting]:"hola"`),
+
+	// Big all-in-one
+	{
+		in: "count:42  # Meaning\n" +
+			`name:"Dave" ` +
+			`quote:"\"I didn't want to go.\"" ` +
+			`pet:"bunny" ` +
+			`pet:"kitty" ` +
+			`pet:"horsey" ` +
+			`inner:<` +
+			`  host:"footrest.syd" ` +
+			`  port:7001 ` +
+			`  connected:true ` +
+			`> ` +
+			`others:<` +
+			`  key:3735928559 ` +
+			`  value:"\x01A\a\f" ` +
+			`> ` +
+			`others:<` +
+			"  weight:58.9  # Atomic weight of Co\n" +
+			`  inner:<` +
+			`    host:"lesha.mtv" ` +
+			`    port:8002 ` +
+			`  >` +
+			`>`,
+		out: &MyMessage{
+			Count: Int32(42),
+			Name:  String("Dave"),
+			Quote: String(`"I didn't want to go."`),
+			Pet:   []string{"bunny", "kitty", "horsey"},
+			Inner: &InnerMessage{
+				Host:      String("footrest.syd"),
+				Port:      Int32(7001),
+				Connected: Bool(true),
+			},
+			Others: []*OtherMessage{
+				{
+					Key:   Int64(3735928559),
+					Value: []byte{0x1, 'A', '\a', '\f'},
+				},
+				{
+					Weight: Float32(58.9),
+					Inner: &InnerMessage{
+						Host: String("lesha.mtv"),
+						Port: Int32(8002),
+					},
+				},
+			},
+		},
+	},
+}
+
+func TestUnmarshalText(t *testing.T) {
+	for i, test := range unMarshalTextTests {
+		pb := new(MyMessage)
+		err := UnmarshalText(test.in, pb)
+		if test.err == "" {
+			// We don't expect failure.
+			if err != nil {
+				t.Errorf("Test %d: Unexpected error: %v", i, err)
+			} else if !reflect.DeepEqual(pb, test.out) {
+				t.Errorf("Test %d: Incorrect populated \nHave: %v\nWant: %v",
+					i, pb, test.out)
+			}
+		} else {
+			// We do expect failure.
+			if err == nil {
+				t.Errorf("Test %d: Didn't get expected error: %v", i, test.err)
+			} else if err.Error() != test.err {
+				t.Errorf("Test %d: Incorrect error.\nHave: %v\nWant: %v",
+					i, err.Error(), test.err)
+			} else if _, ok := err.(*RequiredNotSetError); ok && test.out != nil && !reflect.DeepEqual(pb, test.out) {
+				t.Errorf("Test %d: Incorrect populated \nHave: %v\nWant: %v",
+					i, pb, test.out)
+			}
+		}
+	}
+}
+
+func TestUnmarshalTextCustomMessage(t *testing.T) {
+	msg := &textMessage{}
+	if err := UnmarshalText("custom", msg); err != nil {
+		t.Errorf("Unexpected error from custom unmarshal: %v", err)
+	}
+	if UnmarshalText("not custom", msg) == nil {
+		t.Errorf("Didn't get expected error from custom unmarshal")
+	}
+}
+
+// Regression test; this caused a panic.
+func TestRepeatedEnum(t *testing.T) {
+	pb := new(RepeatedEnum)
+	if err := UnmarshalText("color: RED", pb); err != nil {
+		t.Fatal(err)
+	}
+	exp := &RepeatedEnum{
+		Color: []RepeatedEnum_Color{RepeatedEnum_RED},
+	}
+	if !Equal(pb, exp) {
+		t.Errorf("Incorrect populated \nHave: %v\nWant: %v", pb, exp)
+	}
+}
+
+func TestProto3TextParsing(t *testing.T) {
+	m := new(proto3pb.Message)
+	const in = `name: "Wallace" true_scotsman: true`
+	want := &proto3pb.Message{
+		Name:         "Wallace",
+		TrueScotsman: true,
+	}
+	if err := UnmarshalText(in, m); err != nil {
+		t.Fatal(err)
+	}
+	if !Equal(m, want) {
+		t.Errorf("\n got %v\nwant %v", m, want)
+	}
+}
+
+func TestMapParsing(t *testing.T) {
+	m := new(MessageWithMap)
+	const in = `name_mapping:<key:1234 value:"Feist"> name_mapping:<key:1 value:"Beatles">` +
+		`msg_mapping:<key:-4, value:<f: 2.0>,>` + // separating commas are okay
+		`msg_mapping<key:-2 value<f: 4.0>>` + // no colon after "value"
+		`msg_mapping:<value:<f: 5.0>>` + // omitted key
+		`msg_mapping:<key:1>` + // omitted value
+		`byte_mapping:<key:true value:"so be it">` +
+		`byte_mapping:<>` // omitted key and value
+	want := &MessageWithMap{
+		NameMapping: map[int32]string{
+			1:    "Beatles",
+			1234: "Feist",
+		},
+		MsgMapping: map[int64]*FloatingPoint{
+			-4: {F: Float64(2.0)},
+			-2: {F: Float64(4.0)},
+			0:  {F: Float64(5.0)},
+			1:  nil,
+		},
+		ByteMapping: map[bool][]byte{
+			false: nil,
+			true:  []byte("so be it"),
+		},
+	}
+	if err := UnmarshalText(in, m); err != nil {
+		t.Fatal(err)
+	}
+	if !Equal(m, want) {
+		t.Errorf("\n got %v\nwant %v", m, want)
+	}
+}
+
+func TestOneofParsing(t *testing.T) {
+	const in = `name:"Shrek"`
+	m := new(Communique)
+	want := &Communique{Union: &Communique_Name{"Shrek"}}
+	if err := UnmarshalText(in, m); err != nil {
+		t.Fatal(err)
+	}
+	if !Equal(m, want) {
+		t.Errorf("\n got %v\nwant %v", m, want)
+	}
+
+	const inOverwrite = `name:"Shrek" number:42`
+	m = new(Communique)
+	testErr := "line 1.13: field 'number' would overwrite already parsed oneof 'Union'"
+	if err := UnmarshalText(inOverwrite, m); err == nil {
+		t.Errorf("TestOneofParsing: Didn't get expected error: %v", testErr)
+	} else if err.Error() != testErr {
+		t.Errorf("TestOneofParsing: Incorrect error.\nHave: %v\nWant: %v",
+			err.Error(), testErr)
+	}
+
+}
+
+var benchInput string
+
+func init() {
+	benchInput = "count: 4\n"
+	for i := 0; i < 1000; i++ {
+		benchInput += "pet: \"fido\"\n"
+	}
+
+	// Check it is valid input.
+	pb := new(MyMessage)
+	err := UnmarshalText(benchInput, pb)
+	if err != nil {
+		panic("Bad benchmark input: " + err.Error())
+	}
+}
+
+func BenchmarkUnmarshalText(b *testing.B) {
+	pb := new(MyMessage)
+	for i := 0; i < b.N; i++ {
+		UnmarshalText(benchInput, pb)
+	}
+	b.SetBytes(int64(len(benchInput)))
+}
diff --git a/vendor/github.com/golang/protobuf/proto/text_test.go b/vendor/github.com/golang/protobuf/proto/text_test.go
new file mode 100644
index 000000000..3eabacac8
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/text_test.go
@@ -0,0 +1,474 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto_test
+
+import (
+	"bytes"
+	"errors"
+	"io/ioutil"
+	"math"
+	"strings"
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+
+	proto3pb "github.com/golang/protobuf/proto/proto3_proto"
+	pb "github.com/golang/protobuf/proto/testdata"
+)
+
+// textMessage implements the methods that allow it to marshal and unmarshal
+// itself as text.
+type textMessage struct {
+}
+
+func (*textMessage) MarshalText() ([]byte, error) {
+	return []byte("custom"), nil
+}
+
+func (*textMessage) UnmarshalText(bytes []byte) error {
+	if string(bytes) != "custom" {
+		return errors.New("expected 'custom'")
+	}
+	return nil
+}
+
+func (*textMessage) Reset()         {}
+func (*textMessage) String() string { return "" }
+func (*textMessage) ProtoMessage()  {}
+
+func newTestMessage() *pb.MyMessage {
+	msg := &pb.MyMessage{
+		Count: proto.Int32(42),
+		Name:  proto.String("Dave"),
+		Quote: proto.String(`"I didn't want to go."`),
+		Pet:   []string{"bunny", "kitty", "horsey"},
+		Inner: &pb.InnerMessage{
+			Host:      proto.String("footrest.syd"),
+			Port:      proto.Int32(7001),
+			Connected: proto.Bool(true),
+		},
+		Others: []*pb.OtherMessage{
+			{
+				Key:   proto.Int64(0xdeadbeef),
+				Value: []byte{1, 65, 7, 12},
+			},
+			{
+				Weight: proto.Float32(6.022),
+				Inner: &pb.InnerMessage{
+					Host: proto.String("lesha.mtv"),
+					Port: proto.Int32(8002),
+				},
+			},
+		},
+		Bikeshed: pb.MyMessage_BLUE.Enum(),
+		Somegroup: &pb.MyMessage_SomeGroup{
+			GroupField: proto.Int32(8),
+		},
+		// One normally wouldn't do this.
+		// This is an undeclared tag 13, as a varint (wire type 0) with value 4.
+		XXX_unrecognized: []byte{13<<3 | 0, 4},
+	}
+	ext := &pb.Ext{
+		Data: proto.String("Big gobs for big rats"),
+	}
+	if err := proto.SetExtension(msg, pb.E_Ext_More, ext); err != nil {
+		panic(err)
+	}
+	greetings := []string{"adg", "easy", "cow"}
+	if err := proto.SetExtension(msg, pb.E_Greeting, greetings); err != nil {
+		panic(err)
+	}
+
+	// Add an unknown extension. We marshal a pb.Ext, and fake the ID.
+	b, err := proto.Marshal(&pb.Ext{Data: proto.String("3G skiing")})
+	if err != nil {
+		panic(err)
+	}
+	b = append(proto.EncodeVarint(201<<3|proto.WireBytes), b...)
+	proto.SetRawExtension(msg, 201, b)
+
+	// Extensions can be plain fields, too, so let's test that.
+	b = append(proto.EncodeVarint(202<<3|proto.WireVarint), 19)
+	proto.SetRawExtension(msg, 202, b)
+
+	return msg
+}
+
+const text = `count: 42
+name: "Dave"
+quote: "\"I didn't want to go.\""
+pet: "bunny"
+pet: "kitty"
+pet: "horsey"
+inner: <
+  host: "footrest.syd"
+  port: 7001
+  connected: true
+>
+others: <
+  key: 3735928559
+  value: "\001A\007\014"
+>
+others: <
+  weight: 6.022
+  inner: <
+    host: "lesha.mtv"
+    port: 8002
+  >
+>
+bikeshed: BLUE
+SomeGroup {
+  group_field: 8
+}
+/* 2 unknown bytes */
+13: 4
+[testdata.Ext.more]: <
+  data: "Big gobs for big rats"
+>
+[testdata.greeting]: "adg"
+[testdata.greeting]: "easy"
+[testdata.greeting]: "cow"
+/* 13 unknown bytes */
+201: "\t3G skiing"
+/* 3 unknown bytes */
+202: 19
+`
+
+func TestMarshalText(t *testing.T) {
+	buf := new(bytes.Buffer)
+	if err := proto.MarshalText(buf, newTestMessage()); err != nil {
+		t.Fatalf("proto.MarshalText: %v", err)
+	}
+	s := buf.String()
+	if s != text {
+		t.Errorf("Got:\n===\n%v===\nExpected:\n===\n%v===\n", s, text)
+	}
+}
+
+func TestMarshalTextCustomMessage(t *testing.T) {
+	buf := new(bytes.Buffer)
+	if err := proto.MarshalText(buf, &textMessage{}); err != nil {
+		t.Fatalf("proto.MarshalText: %v", err)
+	}
+	s := buf.String()
+	if s != "custom" {
+		t.Errorf("Got %q, expected %q", s, "custom")
+	}
+}
+func TestMarshalTextNil(t *testing.T) {
+	want := "<nil>"
+	tests := []proto.Message{nil, (*pb.MyMessage)(nil)}
+	for i, test := range tests {
+		buf := new(bytes.Buffer)
+		if err := proto.MarshalText(buf, test); err != nil {
+			t.Fatal(err)
+		}
+		if got := buf.String(); got != want {
+			t.Errorf("%d: got %q want %q", i, got, want)
+		}
+	}
+}
+
+func TestMarshalTextUnknownEnum(t *testing.T) {
+	// The Color enum only specifies values 0-2.
+	m := &pb.MyMessage{Bikeshed: pb.MyMessage_Color(3).Enum()}
+	got := m.String()
+	const want = `bikeshed:3 `
+	if got != want {
+		t.Errorf("\n got %q\nwant %q", got, want)
+	}
+}
+
+func TestTextOneof(t *testing.T) {
+	tests := []struct {
+		m    proto.Message
+		want string
+	}{
+		// zero message
+		{&pb.Communique{}, ``},
+		// scalar field
+		{&pb.Communique{Union: &pb.Communique_Number{4}}, `number:4`},
+		// message field
+		{&pb.Communique{Union: &pb.Communique_Msg{
+			&pb.Strings{StringField: proto.String("why hello!")},
+		}}, `msg:<string_field:"why hello!" >`},
+		// bad oneof (should not panic)
+		{&pb.Communique{Union: &pb.Communique_Msg{nil}}, `msg:/* nil */`},
+	}
+	for _, test := range tests {
+		got := strings.TrimSpace(test.m.String())
+		if got != test.want {
+			t.Errorf("\n got %s\nwant %s", got, test.want)
+		}
+	}
+}
+
+func BenchmarkMarshalTextBuffered(b *testing.B) {
+	buf := new(bytes.Buffer)
+	m := newTestMessage()
+	for i := 0; i < b.N; i++ {
+		buf.Reset()
+		proto.MarshalText(buf, m)
+	}
+}
+
+func BenchmarkMarshalTextUnbuffered(b *testing.B) {
+	w := ioutil.Discard
+	m := newTestMessage()
+	for i := 0; i < b.N; i++ {
+		proto.MarshalText(w, m)
+	}
+}
+
+func compact(src string) string {
+	// s/[ \n]+/ /g; s/ $//;
+	dst := make([]byte, len(src))
+	space, comment := false, false
+	j := 0
+	for i := 0; i < len(src); i++ {
+		if strings.HasPrefix(src[i:], "/*") {
+			comment = true
+			i++
+			continue
+		}
+		if comment && strings.HasPrefix(src[i:], "*/") {
+			comment = false
+			i++
+			continue
+		}
+		if comment {
+			continue
+		}
+		c := src[i]
+		if c == ' ' || c == '\n' {
+			space = true
+			continue
+		}
+		if j > 0 && (dst[j-1] == ':' || dst[j-1] == '<' || dst[j-1] == '{') {
+			space = false
+		}
+		if c == '{' {
+			space = false
+		}
+		if space {
+			dst[j] = ' '
+			j++
+			space = false
+		}
+		dst[j] = c
+		j++
+	}
+	if space {
+		dst[j] = ' '
+		j++
+	}
+	return string(dst[0:j])
+}
+
+var compactText = compact(text)
+
+func TestCompactText(t *testing.T) {
+	s := proto.CompactTextString(newTestMessage())
+	if s != compactText {
+		t.Errorf("Got:\n===\n%v===\nExpected:\n===\n%v\n===\n", s, compactText)
+	}
+}
+
+func TestStringEscaping(t *testing.T) {
+	testCases := []struct {
+		in  *pb.Strings
+		out string
+	}{
+		{
+			// Test data from C++ test (TextFormatTest.StringEscape).
+			// Single divergence: we don't escape apostrophes.
+			&pb.Strings{StringField: proto.String("\"A string with ' characters \n and \r newlines and \t tabs and \001 slashes \\ and  multiple   spaces")},
+			"string_field: \"\\\"A string with ' characters \\n and \\r newlines and \\t tabs and \\001 slashes \\\\ and  multiple   spaces\"\n",
+		},
+		{
+			// Test data from the same C++ test.
+			&pb.Strings{StringField: proto.String("\350\260\267\346\255\214")},
+			"string_field: \"\\350\\260\\267\\346\\255\\214\"\n",
+		},
+		{
+			// Some UTF-8.
+			&pb.Strings{StringField: proto.String("\x00\x01\xff\x81")},
+			`string_field: "\000\001\377\201"` + "\n",
+		},
+	}
+
+	for i, tc := range testCases {
+		var buf bytes.Buffer
+		if err := proto.MarshalText(&buf, tc.in); err != nil {
+			t.Errorf("proto.MarsalText: %v", err)
+			continue
+		}
+		s := buf.String()
+		if s != tc.out {
+			t.Errorf("#%d: Got:\n%s\nExpected:\n%s\n", i, s, tc.out)
+			continue
+		}
+
+		// Check round-trip.
+		pb := new(pb.Strings)
+		if err := proto.UnmarshalText(s, pb); err != nil {
+			t.Errorf("#%d: UnmarshalText: %v", i, err)
+			continue
+		}
+		if !proto.Equal(pb, tc.in) {
+			t.Errorf("#%d: Round-trip failed:\nstart: %v\n  end: %v", i, tc.in, pb)
+		}
+	}
+}
+
+// A limitedWriter accepts some output before it fails.
+// This is a proxy for something like a nearly-full or imminently-failing disk,
+// or a network connection that is about to die.
+type limitedWriter struct {
+	b     bytes.Buffer
+	limit int
+}
+
+var outOfSpace = errors.New("proto: insufficient space")
+
+func (w *limitedWriter) Write(p []byte) (n int, err error) {
+	var avail = w.limit - w.b.Len()
+	if avail <= 0 {
+		return 0, outOfSpace
+	}
+	if len(p) <= avail {
+		return w.b.Write(p)
+	}
+	n, _ = w.b.Write(p[:avail])
+	return n, outOfSpace
+}
+
+func TestMarshalTextFailing(t *testing.T) {
+	// Try lots of different sizes to exercise more error code-paths.
+	for lim := 0; lim < len(text); lim++ {
+		buf := new(limitedWriter)
+		buf.limit = lim
+		err := proto.MarshalText(buf, newTestMessage())
+		// We expect a certain error, but also some partial results in the buffer.
+		if err != outOfSpace {
+			t.Errorf("Got:\n===\n%v===\nExpected:\n===\n%v===\n", err, outOfSpace)
+		}
+		s := buf.b.String()
+		x := text[:buf.limit]
+		if s != x {
+			t.Errorf("Got:\n===\n%v===\nExpected:\n===\n%v===\n", s, x)
+		}
+	}
+}
+
+func TestFloats(t *testing.T) {
+	tests := []struct {
+		f    float64
+		want string
+	}{
+		{0, "0"},
+		{4.7, "4.7"},
+		{math.Inf(1), "inf"},
+		{math.Inf(-1), "-inf"},
+		{math.NaN(), "nan"},
+	}
+	for _, test := range tests {
+		msg := &pb.FloatingPoint{F: &test.f}
+		got := strings.TrimSpace(msg.String())
+		want := `f:` + test.want
+		if got != want {
+			t.Errorf("f=%f: got %q, want %q", test.f, got, want)
+		}
+	}
+}
+
+func TestRepeatedNilText(t *testing.T) {
+	m := &pb.MessageList{
+		Message: []*pb.MessageList_Message{
+			nil,
+			&pb.MessageList_Message{
+				Name: proto.String("Horse"),
+			},
+			nil,
+		},
+	}
+	want := `Message <nil>
+Message {
+  name: "Horse"
+}
+Message <nil>
+`
+	if s := proto.MarshalTextString(m); s != want {
+		t.Errorf(" got: %s\nwant: %s", s, want)
+	}
+}
+
+func TestProto3Text(t *testing.T) {
+	tests := []struct {
+		m    proto.Message
+		want string
+	}{
+		// zero message
+		{&proto3pb.Message{}, ``},
+		// zero message except for an empty byte slice
+		{&proto3pb.Message{Data: []byte{}}, ``},
+		// trivial case
+		{&proto3pb.Message{Name: "Rob", HeightInCm: 175}, `name:"Rob" height_in_cm:175`},
+		// empty map
+		{&pb.MessageWithMap{}, ``},
+		// non-empty map; map format is the same as a repeated struct,
+		// and they are sorted by key (numerically for numeric keys).
+		{
+			&pb.MessageWithMap{NameMapping: map[int32]string{
+				-1:      "Negatory",
+				7:       "Lucky",
+				1234:    "Feist",
+				6345789: "Otis",
+			}},
+			`name_mapping:<key:-1 value:"Negatory" > ` +
+				`name_mapping:<key:7 value:"Lucky" > ` +
+				`name_mapping:<key:1234 value:"Feist" > ` +
+				`name_mapping:<key:6345789 value:"Otis" >`,
+		},
+		// map with nil value; not well-defined, but we shouldn't crash
+		{
+			&pb.MessageWithMap{MsgMapping: map[int64]*pb.FloatingPoint{7: nil}},
+			`msg_mapping:<key:7 >`,
+		},
+	}
+	for _, test := range tests {
+		got := strings.TrimSpace(test.m.String())
+		if got != test.want {
+			t.Errorf("\n got %s\nwant %s", got, test.want)
+		}
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/Makefile b/vendor/github.com/golang/protobuf/protoc-gen-go/Makefile
new file mode 100644
index 000000000..a42cc3717
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/Makefile
@@ -0,0 +1,33 @@
+# Go support for Protocol Buffers - Google's data interchange format
+#
+# Copyright 2010 The Go Authors.  All rights reserved.
+# https://github.com/golang/protobuf
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+test:
+	cd testdata && make test
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/descriptor/Makefile b/vendor/github.com/golang/protobuf/protoc-gen-go/descriptor/Makefile
new file mode 100644
index 000000000..4942418e3
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/descriptor/Makefile
@@ -0,0 +1,39 @@
+# Go support for Protocol Buffers - Google's data interchange format
+#
+# Copyright 2010 The Go Authors.  All rights reserved.
+# https://github.com/golang/protobuf
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Not stored here, but descriptor.proto is in https://github.com/google/protobuf/
+# at src/google/protobuf/descriptor.proto
+regenerate:
+	echo WARNING! THIS RULE IS PROBABLY NOT RIGHT FOR YOUR INSTALLATION
+	protoc --go_out=. -I$(HOME)/src/protobuf/src $(HOME)/src/protobuf/src/google/protobuf/descriptor.proto && \
+		sed 's,^package google_protobuf,package descriptor,' google/protobuf/descriptor.pb.go > \
+		$(GOPATH)/src/github.com/golang/protobuf/protoc-gen-go/descriptor/descriptor.pb.go && \
+		rm -f google/protobuf/descriptor.pb.go
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/descriptor/descriptor.pb.go b/vendor/github.com/golang/protobuf/protoc-gen-go/descriptor/descriptor.pb.go
new file mode 100644
index 000000000..a1d8a764f
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/descriptor/descriptor.pb.go
@@ -0,0 +1,2065 @@
+// Code generated by protoc-gen-go.
+// source: google/protobuf/descriptor.proto
+// DO NOT EDIT!
+
+/*
+Package descriptor is a generated protocol buffer package.
+
+It is generated from these files:
+	google/protobuf/descriptor.proto
+
+It has these top-level messages:
+	FileDescriptorSet
+	FileDescriptorProto
+	DescriptorProto
+	FieldDescriptorProto
+	OneofDescriptorProto
+	EnumDescriptorProto
+	EnumValueDescriptorProto
+	ServiceDescriptorProto
+	MethodDescriptorProto
+	FileOptions
+	MessageOptions
+	FieldOptions
+	OneofOptions
+	EnumOptions
+	EnumValueOptions
+	ServiceOptions
+	MethodOptions
+	UninterpretedOption
+	SourceCodeInfo
+	GeneratedCodeInfo
+*/
+package descriptor
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+type FieldDescriptorProto_Type int32
+
+const (
+	// 0 is reserved for errors.
+	// Order is weird for historical reasons.
+	FieldDescriptorProto_TYPE_DOUBLE FieldDescriptorProto_Type = 1
+	FieldDescriptorProto_TYPE_FLOAT  FieldDescriptorProto_Type = 2
+	// Not ZigZag encoded.  Negative numbers take 10 bytes.  Use TYPE_SINT64 if
+	// negative values are likely.
+	FieldDescriptorProto_TYPE_INT64  FieldDescriptorProto_Type = 3
+	FieldDescriptorProto_TYPE_UINT64 FieldDescriptorProto_Type = 4
+	// Not ZigZag encoded.  Negative numbers take 10 bytes.  Use TYPE_SINT32 if
+	// negative values are likely.
+	FieldDescriptorProto_TYPE_INT32   FieldDescriptorProto_Type = 5
+	FieldDescriptorProto_TYPE_FIXED64 FieldDescriptorProto_Type = 6
+	FieldDescriptorProto_TYPE_FIXED32 FieldDescriptorProto_Type = 7
+	FieldDescriptorProto_TYPE_BOOL    FieldDescriptorProto_Type = 8
+	FieldDescriptorProto_TYPE_STRING  FieldDescriptorProto_Type = 9
+	FieldDescriptorProto_TYPE_GROUP   FieldDescriptorProto_Type = 10
+	FieldDescriptorProto_TYPE_MESSAGE FieldDescriptorProto_Type = 11
+	// New in version 2.
+	FieldDescriptorProto_TYPE_BYTES    FieldDescriptorProto_Type = 12
+	FieldDescriptorProto_TYPE_UINT32   FieldDescriptorProto_Type = 13
+	FieldDescriptorProto_TYPE_ENUM     FieldDescriptorProto_Type = 14
+	FieldDescriptorProto_TYPE_SFIXED32 FieldDescriptorProto_Type = 15
+	FieldDescriptorProto_TYPE_SFIXED64 FieldDescriptorProto_Type = 16
+	FieldDescriptorProto_TYPE_SINT32   FieldDescriptorProto_Type = 17
+	FieldDescriptorProto_TYPE_SINT64   FieldDescriptorProto_Type = 18
+)
+
+var FieldDescriptorProto_Type_name = map[int32]string{
+	1:  "TYPE_DOUBLE",
+	2:  "TYPE_FLOAT",
+	3:  "TYPE_INT64",
+	4:  "TYPE_UINT64",
+	5:  "TYPE_INT32",
+	6:  "TYPE_FIXED64",
+	7:  "TYPE_FIXED32",
+	8:  "TYPE_BOOL",
+	9:  "TYPE_STRING",
+	10: "TYPE_GROUP",
+	11: "TYPE_MESSAGE",
+	12: "TYPE_BYTES",
+	13: "TYPE_UINT32",
+	14: "TYPE_ENUM",
+	15: "TYPE_SFIXED32",
+	16: "TYPE_SFIXED64",
+	17: "TYPE_SINT32",
+	18: "TYPE_SINT64",
+}
+var FieldDescriptorProto_Type_value = map[string]int32{
+	"TYPE_DOUBLE":   1,
+	"TYPE_FLOAT":    2,
+	"TYPE_INT64":    3,
+	"TYPE_UINT64":   4,
+	"TYPE_INT32":    5,
+	"TYPE_FIXED64":  6,
+	"TYPE_FIXED32":  7,
+	"TYPE_BOOL":     8,
+	"TYPE_STRING":   9,
+	"TYPE_GROUP":    10,
+	"TYPE_MESSAGE":  11,
+	"TYPE_BYTES":    12,
+	"TYPE_UINT32":   13,
+	"TYPE_ENUM":     14,
+	"TYPE_SFIXED32": 15,
+	"TYPE_SFIXED64": 16,
+	"TYPE_SINT32":   17,
+	"TYPE_SINT64":   18,
+}
+
+func (x FieldDescriptorProto_Type) Enum() *FieldDescriptorProto_Type {
+	p := new(FieldDescriptorProto_Type)
+	*p = x
+	return p
+}
+func (x FieldDescriptorProto_Type) String() string {
+	return proto.EnumName(FieldDescriptorProto_Type_name, int32(x))
+}
+func (x *FieldDescriptorProto_Type) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(FieldDescriptorProto_Type_value, data, "FieldDescriptorProto_Type")
+	if err != nil {
+		return err
+	}
+	*x = FieldDescriptorProto_Type(value)
+	return nil
+}
+func (FieldDescriptorProto_Type) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{3, 0} }
+
+type FieldDescriptorProto_Label int32
+
+const (
+	// 0 is reserved for errors
+	FieldDescriptorProto_LABEL_OPTIONAL FieldDescriptorProto_Label = 1
+	FieldDescriptorProto_LABEL_REQUIRED FieldDescriptorProto_Label = 2
+	FieldDescriptorProto_LABEL_REPEATED FieldDescriptorProto_Label = 3
+)
+
+var FieldDescriptorProto_Label_name = map[int32]string{
+	1: "LABEL_OPTIONAL",
+	2: "LABEL_REQUIRED",
+	3: "LABEL_REPEATED",
+}
+var FieldDescriptorProto_Label_value = map[string]int32{
+	"LABEL_OPTIONAL": 1,
+	"LABEL_REQUIRED": 2,
+	"LABEL_REPEATED": 3,
+}
+
+func (x FieldDescriptorProto_Label) Enum() *FieldDescriptorProto_Label {
+	p := new(FieldDescriptorProto_Label)
+	*p = x
+	return p
+}
+func (x FieldDescriptorProto_Label) String() string {
+	return proto.EnumName(FieldDescriptorProto_Label_name, int32(x))
+}
+func (x *FieldDescriptorProto_Label) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(FieldDescriptorProto_Label_value, data, "FieldDescriptorProto_Label")
+	if err != nil {
+		return err
+	}
+	*x = FieldDescriptorProto_Label(value)
+	return nil
+}
+func (FieldDescriptorProto_Label) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor0, []int{3, 1}
+}
+
+// Generated classes can be optimized for speed or code size.
+type FileOptions_OptimizeMode int32
+
+const (
+	FileOptions_SPEED FileOptions_OptimizeMode = 1
+	// etc.
+	FileOptions_CODE_SIZE    FileOptions_OptimizeMode = 2
+	FileOptions_LITE_RUNTIME FileOptions_OptimizeMode = 3
+)
+
+var FileOptions_OptimizeMode_name = map[int32]string{
+	1: "SPEED",
+	2: "CODE_SIZE",
+	3: "LITE_RUNTIME",
+}
+var FileOptions_OptimizeMode_value = map[string]int32{
+	"SPEED":        1,
+	"CODE_SIZE":    2,
+	"LITE_RUNTIME": 3,
+}
+
+func (x FileOptions_OptimizeMode) Enum() *FileOptions_OptimizeMode {
+	p := new(FileOptions_OptimizeMode)
+	*p = x
+	return p
+}
+func (x FileOptions_OptimizeMode) String() string {
+	return proto.EnumName(FileOptions_OptimizeMode_name, int32(x))
+}
+func (x *FileOptions_OptimizeMode) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(FileOptions_OptimizeMode_value, data, "FileOptions_OptimizeMode")
+	if err != nil {
+		return err
+	}
+	*x = FileOptions_OptimizeMode(value)
+	return nil
+}
+func (FileOptions_OptimizeMode) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{9, 0} }
+
+type FieldOptions_CType int32
+
+const (
+	// Default mode.
+	FieldOptions_STRING       FieldOptions_CType = 0
+	FieldOptions_CORD         FieldOptions_CType = 1
+	FieldOptions_STRING_PIECE FieldOptions_CType = 2
+)
+
+var FieldOptions_CType_name = map[int32]string{
+	0: "STRING",
+	1: "CORD",
+	2: "STRING_PIECE",
+}
+var FieldOptions_CType_value = map[string]int32{
+	"STRING":       0,
+	"CORD":         1,
+	"STRING_PIECE": 2,
+}
+
+func (x FieldOptions_CType) Enum() *FieldOptions_CType {
+	p := new(FieldOptions_CType)
+	*p = x
+	return p
+}
+func (x FieldOptions_CType) String() string {
+	return proto.EnumName(FieldOptions_CType_name, int32(x))
+}
+func (x *FieldOptions_CType) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(FieldOptions_CType_value, data, "FieldOptions_CType")
+	if err != nil {
+		return err
+	}
+	*x = FieldOptions_CType(value)
+	return nil
+}
+func (FieldOptions_CType) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{11, 0} }
+
+type FieldOptions_JSType int32
+
+const (
+	// Use the default type.
+	FieldOptions_JS_NORMAL FieldOptions_JSType = 0
+	// Use JavaScript strings.
+	FieldOptions_JS_STRING FieldOptions_JSType = 1
+	// Use JavaScript numbers.
+	FieldOptions_JS_NUMBER FieldOptions_JSType = 2
+)
+
+var FieldOptions_JSType_name = map[int32]string{
+	0: "JS_NORMAL",
+	1: "JS_STRING",
+	2: "JS_NUMBER",
+}
+var FieldOptions_JSType_value = map[string]int32{
+	"JS_NORMAL": 0,
+	"JS_STRING": 1,
+	"JS_NUMBER": 2,
+}
+
+func (x FieldOptions_JSType) Enum() *FieldOptions_JSType {
+	p := new(FieldOptions_JSType)
+	*p = x
+	return p
+}
+func (x FieldOptions_JSType) String() string {
+	return proto.EnumName(FieldOptions_JSType_name, int32(x))
+}
+func (x *FieldOptions_JSType) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(FieldOptions_JSType_value, data, "FieldOptions_JSType")
+	if err != nil {
+		return err
+	}
+	*x = FieldOptions_JSType(value)
+	return nil
+}
+func (FieldOptions_JSType) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{11, 1} }
+
+// The protocol compiler can output a FileDescriptorSet containing the .proto
+// files it parses.
+type FileDescriptorSet struct {
+	File             []*FileDescriptorProto `protobuf:"bytes,1,rep,name=file" json:"file,omitempty"`
+	XXX_unrecognized []byte                 `json:"-"`
+}
+
+func (m *FileDescriptorSet) Reset()                    { *m = FileDescriptorSet{} }
+func (m *FileDescriptorSet) String() string            { return proto.CompactTextString(m) }
+func (*FileDescriptorSet) ProtoMessage()               {}
+func (*FileDescriptorSet) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+func (m *FileDescriptorSet) GetFile() []*FileDescriptorProto {
+	if m != nil {
+		return m.File
+	}
+	return nil
+}
+
+// Describes a complete .proto file.
+type FileDescriptorProto struct {
+	Name    *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Package *string `protobuf:"bytes,2,opt,name=package" json:"package,omitempty"`
+	// Names of files imported by this file.
+	Dependency []string `protobuf:"bytes,3,rep,name=dependency" json:"dependency,omitempty"`
+	// Indexes of the public imported files in the dependency list above.
+	PublicDependency []int32 `protobuf:"varint,10,rep,name=public_dependency,json=publicDependency" json:"public_dependency,omitempty"`
+	// Indexes of the weak imported files in the dependency list.
+	// For Google-internal migration only. Do not use.
+	WeakDependency []int32 `protobuf:"varint,11,rep,name=weak_dependency,json=weakDependency" json:"weak_dependency,omitempty"`
+	// All top-level definitions in this file.
+	MessageType []*DescriptorProto        `protobuf:"bytes,4,rep,name=message_type,json=messageType" json:"message_type,omitempty"`
+	EnumType    []*EnumDescriptorProto    `protobuf:"bytes,5,rep,name=enum_type,json=enumType" json:"enum_type,omitempty"`
+	Service     []*ServiceDescriptorProto `protobuf:"bytes,6,rep,name=service" json:"service,omitempty"`
+	Extension   []*FieldDescriptorProto   `protobuf:"bytes,7,rep,name=extension" json:"extension,omitempty"`
+	Options     *FileOptions              `protobuf:"bytes,8,opt,name=options" json:"options,omitempty"`
+	// This field contains optional information about the original source code.
+	// You may safely remove this entire field without harming runtime
+	// functionality of the descriptors -- the information is needed only by
+	// development tools.
+	SourceCodeInfo *SourceCodeInfo `protobuf:"bytes,9,opt,name=source_code_info,json=sourceCodeInfo" json:"source_code_info,omitempty"`
+	// The syntax of the proto file.
+	// The supported values are "proto2" and "proto3".
+	Syntax           *string `protobuf:"bytes,12,opt,name=syntax" json:"syntax,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *FileDescriptorProto) Reset()                    { *m = FileDescriptorProto{} }
+func (m *FileDescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*FileDescriptorProto) ProtoMessage()               {}
+func (*FileDescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+func (m *FileDescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *FileDescriptorProto) GetPackage() string {
+	if m != nil && m.Package != nil {
+		return *m.Package
+	}
+	return ""
+}
+
+func (m *FileDescriptorProto) GetDependency() []string {
+	if m != nil {
+		return m.Dependency
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetPublicDependency() []int32 {
+	if m != nil {
+		return m.PublicDependency
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetWeakDependency() []int32 {
+	if m != nil {
+		return m.WeakDependency
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetMessageType() []*DescriptorProto {
+	if m != nil {
+		return m.MessageType
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetEnumType() []*EnumDescriptorProto {
+	if m != nil {
+		return m.EnumType
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetService() []*ServiceDescriptorProto {
+	if m != nil {
+		return m.Service
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetExtension() []*FieldDescriptorProto {
+	if m != nil {
+		return m.Extension
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetOptions() *FileOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetSourceCodeInfo() *SourceCodeInfo {
+	if m != nil {
+		return m.SourceCodeInfo
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetSyntax() string {
+	if m != nil && m.Syntax != nil {
+		return *m.Syntax
+	}
+	return ""
+}
+
+// Describes a message type.
+type DescriptorProto struct {
+	Name           *string                           `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Field          []*FieldDescriptorProto           `protobuf:"bytes,2,rep,name=field" json:"field,omitempty"`
+	Extension      []*FieldDescriptorProto           `protobuf:"bytes,6,rep,name=extension" json:"extension,omitempty"`
+	NestedType     []*DescriptorProto                `protobuf:"bytes,3,rep,name=nested_type,json=nestedType" json:"nested_type,omitempty"`
+	EnumType       []*EnumDescriptorProto            `protobuf:"bytes,4,rep,name=enum_type,json=enumType" json:"enum_type,omitempty"`
+	ExtensionRange []*DescriptorProto_ExtensionRange `protobuf:"bytes,5,rep,name=extension_range,json=extensionRange" json:"extension_range,omitempty"`
+	OneofDecl      []*OneofDescriptorProto           `protobuf:"bytes,8,rep,name=oneof_decl,json=oneofDecl" json:"oneof_decl,omitempty"`
+	Options        *MessageOptions                   `protobuf:"bytes,7,opt,name=options" json:"options,omitempty"`
+	ReservedRange  []*DescriptorProto_ReservedRange  `protobuf:"bytes,9,rep,name=reserved_range,json=reservedRange" json:"reserved_range,omitempty"`
+	// Reserved field names, which may not be used by fields in the same message.
+	// A given name may only be reserved once.
+	ReservedName     []string `protobuf:"bytes,10,rep,name=reserved_name,json=reservedName" json:"reserved_name,omitempty"`
+	XXX_unrecognized []byte   `json:"-"`
+}
+
+func (m *DescriptorProto) Reset()                    { *m = DescriptorProto{} }
+func (m *DescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*DescriptorProto) ProtoMessage()               {}
+func (*DescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+
+func (m *DescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *DescriptorProto) GetField() []*FieldDescriptorProto {
+	if m != nil {
+		return m.Field
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetExtension() []*FieldDescriptorProto {
+	if m != nil {
+		return m.Extension
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetNestedType() []*DescriptorProto {
+	if m != nil {
+		return m.NestedType
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetEnumType() []*EnumDescriptorProto {
+	if m != nil {
+		return m.EnumType
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetExtensionRange() []*DescriptorProto_ExtensionRange {
+	if m != nil {
+		return m.ExtensionRange
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetOneofDecl() []*OneofDescriptorProto {
+	if m != nil {
+		return m.OneofDecl
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetOptions() *MessageOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetReservedRange() []*DescriptorProto_ReservedRange {
+	if m != nil {
+		return m.ReservedRange
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetReservedName() []string {
+	if m != nil {
+		return m.ReservedName
+	}
+	return nil
+}
+
+type DescriptorProto_ExtensionRange struct {
+	Start            *int32 `protobuf:"varint,1,opt,name=start" json:"start,omitempty"`
+	End              *int32 `protobuf:"varint,2,opt,name=end" json:"end,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *DescriptorProto_ExtensionRange) Reset()         { *m = DescriptorProto_ExtensionRange{} }
+func (m *DescriptorProto_ExtensionRange) String() string { return proto.CompactTextString(m) }
+func (*DescriptorProto_ExtensionRange) ProtoMessage()    {}
+func (*DescriptorProto_ExtensionRange) Descriptor() ([]byte, []int) {
+	return fileDescriptor0, []int{2, 0}
+}
+
+func (m *DescriptorProto_ExtensionRange) GetStart() int32 {
+	if m != nil && m.Start != nil {
+		return *m.Start
+	}
+	return 0
+}
+
+func (m *DescriptorProto_ExtensionRange) GetEnd() int32 {
+	if m != nil && m.End != nil {
+		return *m.End
+	}
+	return 0
+}
+
+// Range of reserved tag numbers. Reserved tag numbers may not be used by
+// fields or extension ranges in the same message. Reserved ranges may
+// not overlap.
+type DescriptorProto_ReservedRange struct {
+	Start            *int32 `protobuf:"varint,1,opt,name=start" json:"start,omitempty"`
+	End              *int32 `protobuf:"varint,2,opt,name=end" json:"end,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *DescriptorProto_ReservedRange) Reset()         { *m = DescriptorProto_ReservedRange{} }
+func (m *DescriptorProto_ReservedRange) String() string { return proto.CompactTextString(m) }
+func (*DescriptorProto_ReservedRange) ProtoMessage()    {}
+func (*DescriptorProto_ReservedRange) Descriptor() ([]byte, []int) {
+	return fileDescriptor0, []int{2, 1}
+}
+
+func (m *DescriptorProto_ReservedRange) GetStart() int32 {
+	if m != nil && m.Start != nil {
+		return *m.Start
+	}
+	return 0
+}
+
+func (m *DescriptorProto_ReservedRange) GetEnd() int32 {
+	if m != nil && m.End != nil {
+		return *m.End
+	}
+	return 0
+}
+
+// Describes a field within a message.
+type FieldDescriptorProto struct {
+	Name   *string                     `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Number *int32                      `protobuf:"varint,3,opt,name=number" json:"number,omitempty"`
+	Label  *FieldDescriptorProto_Label `protobuf:"varint,4,opt,name=label,enum=google.protobuf.FieldDescriptorProto_Label" json:"label,omitempty"`
+	// If type_name is set, this need not be set.  If both this and type_name
+	// are set, this must be one of TYPE_ENUM, TYPE_MESSAGE or TYPE_GROUP.
+	Type *FieldDescriptorProto_Type `protobuf:"varint,5,opt,name=type,enum=google.protobuf.FieldDescriptorProto_Type" json:"type,omitempty"`
+	// For message and enum types, this is the name of the type.  If the name
+	// starts with a '.', it is fully-qualified.  Otherwise, C++-like scoping
+	// rules are used to find the type (i.e. first the nested types within this
+	// message are searched, then within the parent, on up to the root
+	// namespace).
+	TypeName *string `protobuf:"bytes,6,opt,name=type_name,json=typeName" json:"type_name,omitempty"`
+	// For extensions, this is the name of the type being extended.  It is
+	// resolved in the same manner as type_name.
+	Extendee *string `protobuf:"bytes,2,opt,name=extendee" json:"extendee,omitempty"`
+	// For numeric types, contains the original text representation of the value.
+	// For booleans, "true" or "false".
+	// For strings, contains the default text contents (not escaped in any way).
+	// For bytes, contains the C escaped value.  All bytes >= 128 are escaped.
+	// TODO(kenton):  Base-64 encode?
+	DefaultValue *string `protobuf:"bytes,7,opt,name=default_value,json=defaultValue" json:"default_value,omitempty"`
+	// If set, gives the index of a oneof in the containing type's oneof_decl
+	// list.  This field is a member of that oneof.
+	OneofIndex *int32 `protobuf:"varint,9,opt,name=oneof_index,json=oneofIndex" json:"oneof_index,omitempty"`
+	// JSON name of this field. The value is set by protocol compiler. If the
+	// user has set a "json_name" option on this field, that option's value
+	// will be used. Otherwise, it's deduced from the field's name by converting
+	// it to camelCase.
+	JsonName         *string       `protobuf:"bytes,10,opt,name=json_name,json=jsonName" json:"json_name,omitempty"`
+	Options          *FieldOptions `protobuf:"bytes,8,opt,name=options" json:"options,omitempty"`
+	XXX_unrecognized []byte        `json:"-"`
+}
+
+func (m *FieldDescriptorProto) Reset()                    { *m = FieldDescriptorProto{} }
+func (m *FieldDescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*FieldDescriptorProto) ProtoMessage()               {}
+func (*FieldDescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
+
+func (m *FieldDescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *FieldDescriptorProto) GetNumber() int32 {
+	if m != nil && m.Number != nil {
+		return *m.Number
+	}
+	return 0
+}
+
+func (m *FieldDescriptorProto) GetLabel() FieldDescriptorProto_Label {
+	if m != nil && m.Label != nil {
+		return *m.Label
+	}
+	return FieldDescriptorProto_LABEL_OPTIONAL
+}
+
+func (m *FieldDescriptorProto) GetType() FieldDescriptorProto_Type {
+	if m != nil && m.Type != nil {
+		return *m.Type
+	}
+	return FieldDescriptorProto_TYPE_DOUBLE
+}
+
+func (m *FieldDescriptorProto) GetTypeName() string {
+	if m != nil && m.TypeName != nil {
+		return *m.TypeName
+	}
+	return ""
+}
+
+func (m *FieldDescriptorProto) GetExtendee() string {
+	if m != nil && m.Extendee != nil {
+		return *m.Extendee
+	}
+	return ""
+}
+
+func (m *FieldDescriptorProto) GetDefaultValue() string {
+	if m != nil && m.DefaultValue != nil {
+		return *m.DefaultValue
+	}
+	return ""
+}
+
+func (m *FieldDescriptorProto) GetOneofIndex() int32 {
+	if m != nil && m.OneofIndex != nil {
+		return *m.OneofIndex
+	}
+	return 0
+}
+
+func (m *FieldDescriptorProto) GetJsonName() string {
+	if m != nil && m.JsonName != nil {
+		return *m.JsonName
+	}
+	return ""
+}
+
+func (m *FieldDescriptorProto) GetOptions() *FieldOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+// Describes a oneof.
+type OneofDescriptorProto struct {
+	Name             *string       `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Options          *OneofOptions `protobuf:"bytes,2,opt,name=options" json:"options,omitempty"`
+	XXX_unrecognized []byte        `json:"-"`
+}
+
+func (m *OneofDescriptorProto) Reset()                    { *m = OneofDescriptorProto{} }
+func (m *OneofDescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*OneofDescriptorProto) ProtoMessage()               {}
+func (*OneofDescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
+
+func (m *OneofDescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *OneofDescriptorProto) GetOptions() *OneofOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+// Describes an enum type.
+type EnumDescriptorProto struct {
+	Name             *string                     `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Value            []*EnumValueDescriptorProto `protobuf:"bytes,2,rep,name=value" json:"value,omitempty"`
+	Options          *EnumOptions                `protobuf:"bytes,3,opt,name=options" json:"options,omitempty"`
+	XXX_unrecognized []byte                      `json:"-"`
+}
+
+func (m *EnumDescriptorProto) Reset()                    { *m = EnumDescriptorProto{} }
+func (m *EnumDescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*EnumDescriptorProto) ProtoMessage()               {}
+func (*EnumDescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} }
+
+func (m *EnumDescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *EnumDescriptorProto) GetValue() []*EnumValueDescriptorProto {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (m *EnumDescriptorProto) GetOptions() *EnumOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+// Describes a value within an enum.
+type EnumValueDescriptorProto struct {
+	Name             *string           `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Number           *int32            `protobuf:"varint,2,opt,name=number" json:"number,omitempty"`
+	Options          *EnumValueOptions `protobuf:"bytes,3,opt,name=options" json:"options,omitempty"`
+	XXX_unrecognized []byte            `json:"-"`
+}
+
+func (m *EnumValueDescriptorProto) Reset()                    { *m = EnumValueDescriptorProto{} }
+func (m *EnumValueDescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*EnumValueDescriptorProto) ProtoMessage()               {}
+func (*EnumValueDescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{6} }
+
+func (m *EnumValueDescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *EnumValueDescriptorProto) GetNumber() int32 {
+	if m != nil && m.Number != nil {
+		return *m.Number
+	}
+	return 0
+}
+
+func (m *EnumValueDescriptorProto) GetOptions() *EnumValueOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+// Describes a service.
+type ServiceDescriptorProto struct {
+	Name             *string                  `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Method           []*MethodDescriptorProto `protobuf:"bytes,2,rep,name=method" json:"method,omitempty"`
+	Options          *ServiceOptions          `protobuf:"bytes,3,opt,name=options" json:"options,omitempty"`
+	XXX_unrecognized []byte                   `json:"-"`
+}
+
+func (m *ServiceDescriptorProto) Reset()                    { *m = ServiceDescriptorProto{} }
+func (m *ServiceDescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*ServiceDescriptorProto) ProtoMessage()               {}
+func (*ServiceDescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} }
+
+func (m *ServiceDescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *ServiceDescriptorProto) GetMethod() []*MethodDescriptorProto {
+	if m != nil {
+		return m.Method
+	}
+	return nil
+}
+
+func (m *ServiceDescriptorProto) GetOptions() *ServiceOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+// Describes a method of a service.
+type MethodDescriptorProto struct {
+	Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	// Input and output type names.  These are resolved in the same way as
+	// FieldDescriptorProto.type_name, but must refer to a message type.
+	InputType  *string        `protobuf:"bytes,2,opt,name=input_type,json=inputType" json:"input_type,omitempty"`
+	OutputType *string        `protobuf:"bytes,3,opt,name=output_type,json=outputType" json:"output_type,omitempty"`
+	Options    *MethodOptions `protobuf:"bytes,4,opt,name=options" json:"options,omitempty"`
+	// Identifies if client streams multiple client messages
+	ClientStreaming *bool `protobuf:"varint,5,opt,name=client_streaming,json=clientStreaming,def=0" json:"client_streaming,omitempty"`
+	// Identifies if server streams multiple server messages
+	ServerStreaming  *bool  `protobuf:"varint,6,opt,name=server_streaming,json=serverStreaming,def=0" json:"server_streaming,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *MethodDescriptorProto) Reset()                    { *m = MethodDescriptorProto{} }
+func (m *MethodDescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*MethodDescriptorProto) ProtoMessage()               {}
+func (*MethodDescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{8} }
+
+const Default_MethodDescriptorProto_ClientStreaming bool = false
+const Default_MethodDescriptorProto_ServerStreaming bool = false
+
+func (m *MethodDescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *MethodDescriptorProto) GetInputType() string {
+	if m != nil && m.InputType != nil {
+		return *m.InputType
+	}
+	return ""
+}
+
+func (m *MethodDescriptorProto) GetOutputType() string {
+	if m != nil && m.OutputType != nil {
+		return *m.OutputType
+	}
+	return ""
+}
+
+func (m *MethodDescriptorProto) GetOptions() *MethodOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+func (m *MethodDescriptorProto) GetClientStreaming() bool {
+	if m != nil && m.ClientStreaming != nil {
+		return *m.ClientStreaming
+	}
+	return Default_MethodDescriptorProto_ClientStreaming
+}
+
+func (m *MethodDescriptorProto) GetServerStreaming() bool {
+	if m != nil && m.ServerStreaming != nil {
+		return *m.ServerStreaming
+	}
+	return Default_MethodDescriptorProto_ServerStreaming
+}
+
+type FileOptions struct {
+	// Sets the Java package where classes generated from this .proto will be
+	// placed.  By default, the proto package is used, but this is often
+	// inappropriate because proto packages do not normally start with backwards
+	// domain names.
+	JavaPackage *string `protobuf:"bytes,1,opt,name=java_package,json=javaPackage" json:"java_package,omitempty"`
+	// If set, all the classes from the .proto file are wrapped in a single
+	// outer class with the given name.  This applies to both Proto1
+	// (equivalent to the old "--one_java_file" option) and Proto2 (where
+	// a .proto always translates to a single class, but you may want to
+	// explicitly choose the class name).
+	JavaOuterClassname *string `protobuf:"bytes,8,opt,name=java_outer_classname,json=javaOuterClassname" json:"java_outer_classname,omitempty"`
+	// If set true, then the Java code generator will generate a separate .java
+	// file for each top-level message, enum, and service defined in the .proto
+	// file.  Thus, these types will *not* be nested inside the outer class
+	// named by java_outer_classname.  However, the outer class will still be
+	// generated to contain the file's getDescriptor() method as well as any
+	// top-level extensions defined in the file.
+	JavaMultipleFiles *bool `protobuf:"varint,10,opt,name=java_multiple_files,json=javaMultipleFiles,def=0" json:"java_multiple_files,omitempty"`
+	// This option does nothing.
+	JavaGenerateEqualsAndHash *bool `protobuf:"varint,20,opt,name=java_generate_equals_and_hash,json=javaGenerateEqualsAndHash" json:"java_generate_equals_and_hash,omitempty"`
+	// If set true, then the Java2 code generator will generate code that
+	// throws an exception whenever an attempt is made to assign a non-UTF-8
+	// byte sequence to a string field.
+	// Message reflection will do the same.
+	// However, an extension field still accepts non-UTF-8 byte sequences.
+	// This option has no effect on when used with the lite runtime.
+	JavaStringCheckUtf8 *bool                     `protobuf:"varint,27,opt,name=java_string_check_utf8,json=javaStringCheckUtf8,def=0" json:"java_string_check_utf8,omitempty"`
+	OptimizeFor         *FileOptions_OptimizeMode `protobuf:"varint,9,opt,name=optimize_for,json=optimizeFor,enum=google.protobuf.FileOptions_OptimizeMode,def=1" json:"optimize_for,omitempty"`
+	// Sets the Go package where structs generated from this .proto will be
+	// placed. If omitted, the Go package will be derived from the following:
+	//   - The basename of the package import path, if provided.
+	//   - Otherwise, the package statement in the .proto file, if present.
+	//   - Otherwise, the basename of the .proto file, without extension.
+	GoPackage *string `protobuf:"bytes,11,opt,name=go_package,json=goPackage" json:"go_package,omitempty"`
+	// Should generic services be generated in each language?  "Generic" services
+	// are not specific to any particular RPC system.  They are generated by the
+	// main code generators in each language (without additional plugins).
+	// Generic services were the only kind of service generation supported by
+	// early versions of google.protobuf.
+	//
+	// Generic services are now considered deprecated in favor of using plugins
+	// that generate code specific to your particular RPC system.  Therefore,
+	// these default to false.  Old code which depends on generic services should
+	// explicitly set them to true.
+	CcGenericServices   *bool `protobuf:"varint,16,opt,name=cc_generic_services,json=ccGenericServices,def=0" json:"cc_generic_services,omitempty"`
+	JavaGenericServices *bool `protobuf:"varint,17,opt,name=java_generic_services,json=javaGenericServices,def=0" json:"java_generic_services,omitempty"`
+	PyGenericServices   *bool `protobuf:"varint,18,opt,name=py_generic_services,json=pyGenericServices,def=0" json:"py_generic_services,omitempty"`
+	// Is this file deprecated?
+	// Depending on the target platform, this can emit Deprecated annotations
+	// for everything in the file, or it will be completely ignored; in the very
+	// least, this is a formalization for deprecating files.
+	Deprecated *bool `protobuf:"varint,23,opt,name=deprecated,def=0" json:"deprecated,omitempty"`
+	// Enables the use of arenas for the proto messages in this file. This applies
+	// only to generated classes for C++.
+	CcEnableArenas *bool `protobuf:"varint,31,opt,name=cc_enable_arenas,json=ccEnableArenas,def=0" json:"cc_enable_arenas,omitempty"`
+	// Sets the objective c class prefix which is prepended to all objective c
+	// generated classes from this .proto. There is no default.
+	ObjcClassPrefix *string `protobuf:"bytes,36,opt,name=objc_class_prefix,json=objcClassPrefix" json:"objc_class_prefix,omitempty"`
+	// Namespace for generated classes; defaults to the package.
+	CsharpNamespace *string `protobuf:"bytes,37,opt,name=csharp_namespace,json=csharpNamespace" json:"csharp_namespace,omitempty"`
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *FileOptions) Reset()                    { *m = FileOptions{} }
+func (m *FileOptions) String() string            { return proto.CompactTextString(m) }
+func (*FileOptions) ProtoMessage()               {}
+func (*FileOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{9} }
+
+var extRange_FileOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*FileOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_FileOptions
+}
+
+const Default_FileOptions_JavaMultipleFiles bool = false
+const Default_FileOptions_JavaStringCheckUtf8 bool = false
+const Default_FileOptions_OptimizeFor FileOptions_OptimizeMode = FileOptions_SPEED
+const Default_FileOptions_CcGenericServices bool = false
+const Default_FileOptions_JavaGenericServices bool = false
+const Default_FileOptions_PyGenericServices bool = false
+const Default_FileOptions_Deprecated bool = false
+const Default_FileOptions_CcEnableArenas bool = false
+
+func (m *FileOptions) GetJavaPackage() string {
+	if m != nil && m.JavaPackage != nil {
+		return *m.JavaPackage
+	}
+	return ""
+}
+
+func (m *FileOptions) GetJavaOuterClassname() string {
+	if m != nil && m.JavaOuterClassname != nil {
+		return *m.JavaOuterClassname
+	}
+	return ""
+}
+
+func (m *FileOptions) GetJavaMultipleFiles() bool {
+	if m != nil && m.JavaMultipleFiles != nil {
+		return *m.JavaMultipleFiles
+	}
+	return Default_FileOptions_JavaMultipleFiles
+}
+
+func (m *FileOptions) GetJavaGenerateEqualsAndHash() bool {
+	if m != nil && m.JavaGenerateEqualsAndHash != nil {
+		return *m.JavaGenerateEqualsAndHash
+	}
+	return false
+}
+
+func (m *FileOptions) GetJavaStringCheckUtf8() bool {
+	if m != nil && m.JavaStringCheckUtf8 != nil {
+		return *m.JavaStringCheckUtf8
+	}
+	return Default_FileOptions_JavaStringCheckUtf8
+}
+
+func (m *FileOptions) GetOptimizeFor() FileOptions_OptimizeMode {
+	if m != nil && m.OptimizeFor != nil {
+		return *m.OptimizeFor
+	}
+	return Default_FileOptions_OptimizeFor
+}
+
+func (m *FileOptions) GetGoPackage() string {
+	if m != nil && m.GoPackage != nil {
+		return *m.GoPackage
+	}
+	return ""
+}
+
+func (m *FileOptions) GetCcGenericServices() bool {
+	if m != nil && m.CcGenericServices != nil {
+		return *m.CcGenericServices
+	}
+	return Default_FileOptions_CcGenericServices
+}
+
+func (m *FileOptions) GetJavaGenericServices() bool {
+	if m != nil && m.JavaGenericServices != nil {
+		return *m.JavaGenericServices
+	}
+	return Default_FileOptions_JavaGenericServices
+}
+
+func (m *FileOptions) GetPyGenericServices() bool {
+	if m != nil && m.PyGenericServices != nil {
+		return *m.PyGenericServices
+	}
+	return Default_FileOptions_PyGenericServices
+}
+
+func (m *FileOptions) GetDeprecated() bool {
+	if m != nil && m.Deprecated != nil {
+		return *m.Deprecated
+	}
+	return Default_FileOptions_Deprecated
+}
+
+func (m *FileOptions) GetCcEnableArenas() bool {
+	if m != nil && m.CcEnableArenas != nil {
+		return *m.CcEnableArenas
+	}
+	return Default_FileOptions_CcEnableArenas
+}
+
+func (m *FileOptions) GetObjcClassPrefix() string {
+	if m != nil && m.ObjcClassPrefix != nil {
+		return *m.ObjcClassPrefix
+	}
+	return ""
+}
+
+func (m *FileOptions) GetCsharpNamespace() string {
+	if m != nil && m.CsharpNamespace != nil {
+		return *m.CsharpNamespace
+	}
+	return ""
+}
+
+func (m *FileOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+type MessageOptions struct {
+	// Set true to use the old proto1 MessageSet wire format for extensions.
+	// This is provided for backwards-compatibility with the MessageSet wire
+	// format.  You should not use this for any other reason:  It's less
+	// efficient, has fewer features, and is more complicated.
+	//
+	// The message must be defined exactly as follows:
+	//   message Foo {
+	//     option message_set_wire_format = true;
+	//     extensions 4 to max;
+	//   }
+	// Note that the message cannot have any defined fields; MessageSets only
+	// have extensions.
+	//
+	// All extensions of your type must be singular messages; e.g. they cannot
+	// be int32s, enums, or repeated messages.
+	//
+	// Because this is an option, the above two restrictions are not enforced by
+	// the protocol compiler.
+	MessageSetWireFormat *bool `protobuf:"varint,1,opt,name=message_set_wire_format,json=messageSetWireFormat,def=0" json:"message_set_wire_format,omitempty"`
+	// Disables the generation of the standard "descriptor()" accessor, which can
+	// conflict with a field of the same name.  This is meant to make migration
+	// from proto1 easier; new code should avoid fields named "descriptor".
+	NoStandardDescriptorAccessor *bool `protobuf:"varint,2,opt,name=no_standard_descriptor_accessor,json=noStandardDescriptorAccessor,def=0" json:"no_standard_descriptor_accessor,omitempty"`
+	// Is this message deprecated?
+	// Depending on the target platform, this can emit Deprecated annotations
+	// for the message, or it will be completely ignored; in the very least,
+	// this is a formalization for deprecating messages.
+	Deprecated *bool `protobuf:"varint,3,opt,name=deprecated,def=0" json:"deprecated,omitempty"`
+	// Whether the message is an automatically generated map entry type for the
+	// maps field.
+	//
+	// For maps fields:
+	//     map<KeyType, ValueType> map_field = 1;
+	// The parsed descriptor looks like:
+	//     message MapFieldEntry {
+	//         option map_entry = true;
+	//         optional KeyType key = 1;
+	//         optional ValueType value = 2;
+	//     }
+	//     repeated MapFieldEntry map_field = 1;
+	//
+	// Implementations may choose not to generate the map_entry=true message, but
+	// use a native map in the target language to hold the keys and values.
+	// The reflection APIs in such implementions still need to work as
+	// if the field is a repeated message field.
+	//
+	// NOTE: Do not set the option in .proto files. Always use the maps syntax
+	// instead. The option should only be implicitly set by the proto compiler
+	// parser.
+	MapEntry *bool `protobuf:"varint,7,opt,name=map_entry,json=mapEntry" json:"map_entry,omitempty"`
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *MessageOptions) Reset()                    { *m = MessageOptions{} }
+func (m *MessageOptions) String() string            { return proto.CompactTextString(m) }
+func (*MessageOptions) ProtoMessage()               {}
+func (*MessageOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{10} }
+
+var extRange_MessageOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*MessageOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_MessageOptions
+}
+
+const Default_MessageOptions_MessageSetWireFormat bool = false
+const Default_MessageOptions_NoStandardDescriptorAccessor bool = false
+const Default_MessageOptions_Deprecated bool = false
+
+func (m *MessageOptions) GetMessageSetWireFormat() bool {
+	if m != nil && m.MessageSetWireFormat != nil {
+		return *m.MessageSetWireFormat
+	}
+	return Default_MessageOptions_MessageSetWireFormat
+}
+
+func (m *MessageOptions) GetNoStandardDescriptorAccessor() bool {
+	if m != nil && m.NoStandardDescriptorAccessor != nil {
+		return *m.NoStandardDescriptorAccessor
+	}
+	return Default_MessageOptions_NoStandardDescriptorAccessor
+}
+
+func (m *MessageOptions) GetDeprecated() bool {
+	if m != nil && m.Deprecated != nil {
+		return *m.Deprecated
+	}
+	return Default_MessageOptions_Deprecated
+}
+
+func (m *MessageOptions) GetMapEntry() bool {
+	if m != nil && m.MapEntry != nil {
+		return *m.MapEntry
+	}
+	return false
+}
+
+func (m *MessageOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+type FieldOptions struct {
+	// The ctype option instructs the C++ code generator to use a different
+	// representation of the field than it normally would.  See the specific
+	// options below.  This option is not yet implemented in the open source
+	// release -- sorry, we'll try to include it in a future version!
+	Ctype *FieldOptions_CType `protobuf:"varint,1,opt,name=ctype,enum=google.protobuf.FieldOptions_CType,def=0" json:"ctype,omitempty"`
+	// The packed option can be enabled for repeated primitive fields to enable
+	// a more efficient representation on the wire. Rather than repeatedly
+	// writing the tag and type for each element, the entire array is encoded as
+	// a single length-delimited blob. In proto3, only explicit setting it to
+	// false will avoid using packed encoding.
+	Packed *bool `protobuf:"varint,2,opt,name=packed" json:"packed,omitempty"`
+	// The jstype option determines the JavaScript type used for values of the
+	// field.  The option is permitted only for 64 bit integral and fixed types
+	// (int64, uint64, sint64, fixed64, sfixed64).  By default these types are
+	// represented as JavaScript strings.  This avoids loss of precision that can
+	// happen when a large value is converted to a floating point JavaScript
+	// numbers.  Specifying JS_NUMBER for the jstype causes the generated
+	// JavaScript code to use the JavaScript "number" type instead of strings.
+	// This option is an enum to permit additional types to be added,
+	// e.g. goog.math.Integer.
+	Jstype *FieldOptions_JSType `protobuf:"varint,6,opt,name=jstype,enum=google.protobuf.FieldOptions_JSType,def=0" json:"jstype,omitempty"`
+	// Should this field be parsed lazily?  Lazy applies only to message-type
+	// fields.  It means that when the outer message is initially parsed, the
+	// inner message's contents will not be parsed but instead stored in encoded
+	// form.  The inner message will actually be parsed when it is first accessed.
+	//
+	// This is only a hint.  Implementations are free to choose whether to use
+	// eager or lazy parsing regardless of the value of this option.  However,
+	// setting this option true suggests that the protocol author believes that
+	// using lazy parsing on this field is worth the additional bookkeeping
+	// overhead typically needed to implement it.
+	//
+	// This option does not affect the public interface of any generated code;
+	// all method signatures remain the same.  Furthermore, thread-safety of the
+	// interface is not affected by this option; const methods remain safe to
+	// call from multiple threads concurrently, while non-const methods continue
+	// to require exclusive access.
+	//
+	//
+	// Note that implementations may choose not to check required fields within
+	// a lazy sub-message.  That is, calling IsInitialized() on the outer message
+	// may return true even if the inner message has missing required fields.
+	// This is necessary because otherwise the inner message would have to be
+	// parsed in order to perform the check, defeating the purpose of lazy
+	// parsing.  An implementation which chooses not to check required fields
+	// must be consistent about it.  That is, for any particular sub-message, the
+	// implementation must either *always* check its required fields, or *never*
+	// check its required fields, regardless of whether or not the message has
+	// been parsed.
+	Lazy *bool `protobuf:"varint,5,opt,name=lazy,def=0" json:"lazy,omitempty"`
+	// Is this field deprecated?
+	// Depending on the target platform, this can emit Deprecated annotations
+	// for accessors, or it will be completely ignored; in the very least, this
+	// is a formalization for deprecating fields.
+	Deprecated *bool `protobuf:"varint,3,opt,name=deprecated,def=0" json:"deprecated,omitempty"`
+	// For Google-internal migration only. Do not use.
+	Weak *bool `protobuf:"varint,10,opt,name=weak,def=0" json:"weak,omitempty"`
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *FieldOptions) Reset()                    { *m = FieldOptions{} }
+func (m *FieldOptions) String() string            { return proto.CompactTextString(m) }
+func (*FieldOptions) ProtoMessage()               {}
+func (*FieldOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{11} }
+
+var extRange_FieldOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*FieldOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_FieldOptions
+}
+
+const Default_FieldOptions_Ctype FieldOptions_CType = FieldOptions_STRING
+const Default_FieldOptions_Jstype FieldOptions_JSType = FieldOptions_JS_NORMAL
+const Default_FieldOptions_Lazy bool = false
+const Default_FieldOptions_Deprecated bool = false
+const Default_FieldOptions_Weak bool = false
+
+func (m *FieldOptions) GetCtype() FieldOptions_CType {
+	if m != nil && m.Ctype != nil {
+		return *m.Ctype
+	}
+	return Default_FieldOptions_Ctype
+}
+
+func (m *FieldOptions) GetPacked() bool {
+	if m != nil && m.Packed != nil {
+		return *m.Packed
+	}
+	return false
+}
+
+func (m *FieldOptions) GetJstype() FieldOptions_JSType {
+	if m != nil && m.Jstype != nil {
+		return *m.Jstype
+	}
+	return Default_FieldOptions_Jstype
+}
+
+func (m *FieldOptions) GetLazy() bool {
+	if m != nil && m.Lazy != nil {
+		return *m.Lazy
+	}
+	return Default_FieldOptions_Lazy
+}
+
+func (m *FieldOptions) GetDeprecated() bool {
+	if m != nil && m.Deprecated != nil {
+		return *m.Deprecated
+	}
+	return Default_FieldOptions_Deprecated
+}
+
+func (m *FieldOptions) GetWeak() bool {
+	if m != nil && m.Weak != nil {
+		return *m.Weak
+	}
+	return Default_FieldOptions_Weak
+}
+
+func (m *FieldOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+type OneofOptions struct {
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *OneofOptions) Reset()                    { *m = OneofOptions{} }
+func (m *OneofOptions) String() string            { return proto.CompactTextString(m) }
+func (*OneofOptions) ProtoMessage()               {}
+func (*OneofOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{12} }
+
+var extRange_OneofOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*OneofOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_OneofOptions
+}
+
+func (m *OneofOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+type EnumOptions struct {
+	// Set this option to true to allow mapping different tag names to the same
+	// value.
+	AllowAlias *bool `protobuf:"varint,2,opt,name=allow_alias,json=allowAlias" json:"allow_alias,omitempty"`
+	// Is this enum deprecated?
+	// Depending on the target platform, this can emit Deprecated annotations
+	// for the enum, or it will be completely ignored; in the very least, this
+	// is a formalization for deprecating enums.
+	Deprecated *bool `protobuf:"varint,3,opt,name=deprecated,def=0" json:"deprecated,omitempty"`
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *EnumOptions) Reset()                    { *m = EnumOptions{} }
+func (m *EnumOptions) String() string            { return proto.CompactTextString(m) }
+func (*EnumOptions) ProtoMessage()               {}
+func (*EnumOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{13} }
+
+var extRange_EnumOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*EnumOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_EnumOptions
+}
+
+const Default_EnumOptions_Deprecated bool = false
+
+func (m *EnumOptions) GetAllowAlias() bool {
+	if m != nil && m.AllowAlias != nil {
+		return *m.AllowAlias
+	}
+	return false
+}
+
+func (m *EnumOptions) GetDeprecated() bool {
+	if m != nil && m.Deprecated != nil {
+		return *m.Deprecated
+	}
+	return Default_EnumOptions_Deprecated
+}
+
+func (m *EnumOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+type EnumValueOptions struct {
+	// Is this enum value deprecated?
+	// Depending on the target platform, this can emit Deprecated annotations
+	// for the enum value, or it will be completely ignored; in the very least,
+	// this is a formalization for deprecating enum values.
+	Deprecated *bool `protobuf:"varint,1,opt,name=deprecated,def=0" json:"deprecated,omitempty"`
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *EnumValueOptions) Reset()                    { *m = EnumValueOptions{} }
+func (m *EnumValueOptions) String() string            { return proto.CompactTextString(m) }
+func (*EnumValueOptions) ProtoMessage()               {}
+func (*EnumValueOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{14} }
+
+var extRange_EnumValueOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*EnumValueOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_EnumValueOptions
+}
+
+const Default_EnumValueOptions_Deprecated bool = false
+
+func (m *EnumValueOptions) GetDeprecated() bool {
+	if m != nil && m.Deprecated != nil {
+		return *m.Deprecated
+	}
+	return Default_EnumValueOptions_Deprecated
+}
+
+func (m *EnumValueOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+type ServiceOptions struct {
+	// Is this service deprecated?
+	// Depending on the target platform, this can emit Deprecated annotations
+	// for the service, or it will be completely ignored; in the very least,
+	// this is a formalization for deprecating services.
+	Deprecated *bool `protobuf:"varint,33,opt,name=deprecated,def=0" json:"deprecated,omitempty"`
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *ServiceOptions) Reset()                    { *m = ServiceOptions{} }
+func (m *ServiceOptions) String() string            { return proto.CompactTextString(m) }
+func (*ServiceOptions) ProtoMessage()               {}
+func (*ServiceOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{15} }
+
+var extRange_ServiceOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*ServiceOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_ServiceOptions
+}
+
+const Default_ServiceOptions_Deprecated bool = false
+
+func (m *ServiceOptions) GetDeprecated() bool {
+	if m != nil && m.Deprecated != nil {
+		return *m.Deprecated
+	}
+	return Default_ServiceOptions_Deprecated
+}
+
+func (m *ServiceOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+type MethodOptions struct {
+	// Is this method deprecated?
+	// Depending on the target platform, this can emit Deprecated annotations
+	// for the method, or it will be completely ignored; in the very least,
+	// this is a formalization for deprecating methods.
+	Deprecated *bool `protobuf:"varint,33,opt,name=deprecated,def=0" json:"deprecated,omitempty"`
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *MethodOptions) Reset()                    { *m = MethodOptions{} }
+func (m *MethodOptions) String() string            { return proto.CompactTextString(m) }
+func (*MethodOptions) ProtoMessage()               {}
+func (*MethodOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{16} }
+
+var extRange_MethodOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*MethodOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_MethodOptions
+}
+
+const Default_MethodOptions_Deprecated bool = false
+
+func (m *MethodOptions) GetDeprecated() bool {
+	if m != nil && m.Deprecated != nil {
+		return *m.Deprecated
+	}
+	return Default_MethodOptions_Deprecated
+}
+
+func (m *MethodOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+// A message representing a option the parser does not recognize. This only
+// appears in options protos created by the compiler::Parser class.
+// DescriptorPool resolves these when building Descriptor objects. Therefore,
+// options protos in descriptor objects (e.g. returned by Descriptor::options(),
+// or produced by Descriptor::CopyTo()) will never have UninterpretedOptions
+// in them.
+type UninterpretedOption struct {
+	Name []*UninterpretedOption_NamePart `protobuf:"bytes,2,rep,name=name" json:"name,omitempty"`
+	// The value of the uninterpreted option, in whatever type the tokenizer
+	// identified it as during parsing. Exactly one of these should be set.
+	IdentifierValue  *string  `protobuf:"bytes,3,opt,name=identifier_value,json=identifierValue" json:"identifier_value,omitempty"`
+	PositiveIntValue *uint64  `protobuf:"varint,4,opt,name=positive_int_value,json=positiveIntValue" json:"positive_int_value,omitempty"`
+	NegativeIntValue *int64   `protobuf:"varint,5,opt,name=negative_int_value,json=negativeIntValue" json:"negative_int_value,omitempty"`
+	DoubleValue      *float64 `protobuf:"fixed64,6,opt,name=double_value,json=doubleValue" json:"double_value,omitempty"`
+	StringValue      []byte   `protobuf:"bytes,7,opt,name=string_value,json=stringValue" json:"string_value,omitempty"`
+	AggregateValue   *string  `protobuf:"bytes,8,opt,name=aggregate_value,json=aggregateValue" json:"aggregate_value,omitempty"`
+	XXX_unrecognized []byte   `json:"-"`
+}
+
+func (m *UninterpretedOption) Reset()                    { *m = UninterpretedOption{} }
+func (m *UninterpretedOption) String() string            { return proto.CompactTextString(m) }
+func (*UninterpretedOption) ProtoMessage()               {}
+func (*UninterpretedOption) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{17} }
+
+func (m *UninterpretedOption) GetName() []*UninterpretedOption_NamePart {
+	if m != nil {
+		return m.Name
+	}
+	return nil
+}
+
+func (m *UninterpretedOption) GetIdentifierValue() string {
+	if m != nil && m.IdentifierValue != nil {
+		return *m.IdentifierValue
+	}
+	return ""
+}
+
+func (m *UninterpretedOption) GetPositiveIntValue() uint64 {
+	if m != nil && m.PositiveIntValue != nil {
+		return *m.PositiveIntValue
+	}
+	return 0
+}
+
+func (m *UninterpretedOption) GetNegativeIntValue() int64 {
+	if m != nil && m.NegativeIntValue != nil {
+		return *m.NegativeIntValue
+	}
+	return 0
+}
+
+func (m *UninterpretedOption) GetDoubleValue() float64 {
+	if m != nil && m.DoubleValue != nil {
+		return *m.DoubleValue
+	}
+	return 0
+}
+
+func (m *UninterpretedOption) GetStringValue() []byte {
+	if m != nil {
+		return m.StringValue
+	}
+	return nil
+}
+
+func (m *UninterpretedOption) GetAggregateValue() string {
+	if m != nil && m.AggregateValue != nil {
+		return *m.AggregateValue
+	}
+	return ""
+}
+
+// The name of the uninterpreted option.  Each string represents a segment in
+// a dot-separated name.  is_extension is true iff a segment represents an
+// extension (denoted with parentheses in options specs in .proto files).
+// E.g.,{ ["foo", false], ["bar.baz", true], ["qux", false] } represents
+// "foo.(bar.baz).qux".
+type UninterpretedOption_NamePart struct {
+	NamePart         *string `protobuf:"bytes,1,req,name=name_part,json=namePart" json:"name_part,omitempty"`
+	IsExtension      *bool   `protobuf:"varint,2,req,name=is_extension,json=isExtension" json:"is_extension,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *UninterpretedOption_NamePart) Reset()         { *m = UninterpretedOption_NamePart{} }
+func (m *UninterpretedOption_NamePart) String() string { return proto.CompactTextString(m) }
+func (*UninterpretedOption_NamePart) ProtoMessage()    {}
+func (*UninterpretedOption_NamePart) Descriptor() ([]byte, []int) {
+	return fileDescriptor0, []int{17, 0}
+}
+
+func (m *UninterpretedOption_NamePart) GetNamePart() string {
+	if m != nil && m.NamePart != nil {
+		return *m.NamePart
+	}
+	return ""
+}
+
+func (m *UninterpretedOption_NamePart) GetIsExtension() bool {
+	if m != nil && m.IsExtension != nil {
+		return *m.IsExtension
+	}
+	return false
+}
+
+// Encapsulates information about the original source file from which a
+// FileDescriptorProto was generated.
+type SourceCodeInfo struct {
+	// A Location identifies a piece of source code in a .proto file which
+	// corresponds to a particular definition.  This information is intended
+	// to be useful to IDEs, code indexers, documentation generators, and similar
+	// tools.
+	//
+	// For example, say we have a file like:
+	//   message Foo {
+	//     optional string foo = 1;
+	//   }
+	// Let's look at just the field definition:
+	//   optional string foo = 1;
+	//   ^       ^^     ^^  ^  ^^^
+	//   a       bc     de  f  ghi
+	// We have the following locations:
+	//   span   path               represents
+	//   [a,i)  [ 4, 0, 2, 0 ]     The whole field definition.
+	//   [a,b)  [ 4, 0, 2, 0, 4 ]  The label (optional).
+	//   [c,d)  [ 4, 0, 2, 0, 5 ]  The type (string).
+	//   [e,f)  [ 4, 0, 2, 0, 1 ]  The name (foo).
+	//   [g,h)  [ 4, 0, 2, 0, 3 ]  The number (1).
+	//
+	// Notes:
+	// - A location may refer to a repeated field itself (i.e. not to any
+	//   particular index within it).  This is used whenever a set of elements are
+	//   logically enclosed in a single code segment.  For example, an entire
+	//   extend block (possibly containing multiple extension definitions) will
+	//   have an outer location whose path refers to the "extensions" repeated
+	//   field without an index.
+	// - Multiple locations may have the same path.  This happens when a single
+	//   logical declaration is spread out across multiple places.  The most
+	//   obvious example is the "extend" block again -- there may be multiple
+	//   extend blocks in the same scope, each of which will have the same path.
+	// - A location's span is not always a subset of its parent's span.  For
+	//   example, the "extendee" of an extension declaration appears at the
+	//   beginning of the "extend" block and is shared by all extensions within
+	//   the block.
+	// - Just because a location's span is a subset of some other location's span
+	//   does not mean that it is a descendent.  For example, a "group" defines
+	//   both a type and a field in a single declaration.  Thus, the locations
+	//   corresponding to the type and field and their components will overlap.
+	// - Code which tries to interpret locations should probably be designed to
+	//   ignore those that it doesn't understand, as more types of locations could
+	//   be recorded in the future.
+	Location         []*SourceCodeInfo_Location `protobuf:"bytes,1,rep,name=location" json:"location,omitempty"`
+	XXX_unrecognized []byte                     `json:"-"`
+}
+
+func (m *SourceCodeInfo) Reset()                    { *m = SourceCodeInfo{} }
+func (m *SourceCodeInfo) String() string            { return proto.CompactTextString(m) }
+func (*SourceCodeInfo) ProtoMessage()               {}
+func (*SourceCodeInfo) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{18} }
+
+func (m *SourceCodeInfo) GetLocation() []*SourceCodeInfo_Location {
+	if m != nil {
+		return m.Location
+	}
+	return nil
+}
+
+type SourceCodeInfo_Location struct {
+	// Identifies which part of the FileDescriptorProto was defined at this
+	// location.
+	//
+	// Each element is a field number or an index.  They form a path from
+	// the root FileDescriptorProto to the place where the definition.  For
+	// example, this path:
+	//   [ 4, 3, 2, 7, 1 ]
+	// refers to:
+	//   file.message_type(3)  // 4, 3
+	//       .field(7)         // 2, 7
+	//       .name()           // 1
+	// This is because FileDescriptorProto.message_type has field number 4:
+	//   repeated DescriptorProto message_type = 4;
+	// and DescriptorProto.field has field number 2:
+	//   repeated FieldDescriptorProto field = 2;
+	// and FieldDescriptorProto.name has field number 1:
+	//   optional string name = 1;
+	//
+	// Thus, the above path gives the location of a field name.  If we removed
+	// the last element:
+	//   [ 4, 3, 2, 7 ]
+	// this path refers to the whole field declaration (from the beginning
+	// of the label to the terminating semicolon).
+	Path []int32 `protobuf:"varint,1,rep,packed,name=path" json:"path,omitempty"`
+	// Always has exactly three or four elements: start line, start column,
+	// end line (optional, otherwise assumed same as start line), end column.
+	// These are packed into a single field for efficiency.  Note that line
+	// and column numbers are zero-based -- typically you will want to add
+	// 1 to each before displaying to a user.
+	Span []int32 `protobuf:"varint,2,rep,packed,name=span" json:"span,omitempty"`
+	// If this SourceCodeInfo represents a complete declaration, these are any
+	// comments appearing before and after the declaration which appear to be
+	// attached to the declaration.
+	//
+	// A series of line comments appearing on consecutive lines, with no other
+	// tokens appearing on those lines, will be treated as a single comment.
+	//
+	// leading_detached_comments will keep paragraphs of comments that appear
+	// before (but not connected to) the current element. Each paragraph,
+	// separated by empty lines, will be one comment element in the repeated
+	// field.
+	//
+	// Only the comment content is provided; comment markers (e.g. //) are
+	// stripped out.  For block comments, leading whitespace and an asterisk
+	// will be stripped from the beginning of each line other than the first.
+	// Newlines are included in the output.
+	//
+	// Examples:
+	//
+	//   optional int32 foo = 1;  // Comment attached to foo.
+	//   // Comment attached to bar.
+	//   optional int32 bar = 2;
+	//
+	//   optional string baz = 3;
+	//   // Comment attached to baz.
+	//   // Another line attached to baz.
+	//
+	//   // Comment attached to qux.
+	//   //
+	//   // Another line attached to qux.
+	//   optional double qux = 4;
+	//
+	//   // Detached comment for corge. This is not leading or trailing comments
+	//   // to qux or corge because there are blank lines separating it from
+	//   // both.
+	//
+	//   // Detached comment for corge paragraph 2.
+	//
+	//   optional string corge = 5;
+	//   /* Block comment attached
+	//    * to corge.  Leading asterisks
+	//    * will be removed. */
+	//   /* Block comment attached to
+	//    * grault. */
+	//   optional int32 grault = 6;
+	//
+	//   // ignored detached comments.
+	LeadingComments         *string  `protobuf:"bytes,3,opt,name=leading_comments,json=leadingComments" json:"leading_comments,omitempty"`
+	TrailingComments        *string  `protobuf:"bytes,4,opt,name=trailing_comments,json=trailingComments" json:"trailing_comments,omitempty"`
+	LeadingDetachedComments []string `protobuf:"bytes,6,rep,name=leading_detached_comments,json=leadingDetachedComments" json:"leading_detached_comments,omitempty"`
+	XXX_unrecognized        []byte   `json:"-"`
+}
+
+func (m *SourceCodeInfo_Location) Reset()                    { *m = SourceCodeInfo_Location{} }
+func (m *SourceCodeInfo_Location) String() string            { return proto.CompactTextString(m) }
+func (*SourceCodeInfo_Location) ProtoMessage()               {}
+func (*SourceCodeInfo_Location) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{18, 0} }
+
+func (m *SourceCodeInfo_Location) GetPath() []int32 {
+	if m != nil {
+		return m.Path
+	}
+	return nil
+}
+
+func (m *SourceCodeInfo_Location) GetSpan() []int32 {
+	if m != nil {
+		return m.Span
+	}
+	return nil
+}
+
+func (m *SourceCodeInfo_Location) GetLeadingComments() string {
+	if m != nil && m.LeadingComments != nil {
+		return *m.LeadingComments
+	}
+	return ""
+}
+
+func (m *SourceCodeInfo_Location) GetTrailingComments() string {
+	if m != nil && m.TrailingComments != nil {
+		return *m.TrailingComments
+	}
+	return ""
+}
+
+func (m *SourceCodeInfo_Location) GetLeadingDetachedComments() []string {
+	if m != nil {
+		return m.LeadingDetachedComments
+	}
+	return nil
+}
+
+// Describes the relationship between generated code and its original source
+// file. A GeneratedCodeInfo message is associated with only one generated
+// source file, but may contain references to different source .proto files.
+type GeneratedCodeInfo struct {
+	// An Annotation connects some span of text in generated code to an element
+	// of its generating .proto file.
+	Annotation       []*GeneratedCodeInfo_Annotation `protobuf:"bytes,1,rep,name=annotation" json:"annotation,omitempty"`
+	XXX_unrecognized []byte                          `json:"-"`
+}
+
+func (m *GeneratedCodeInfo) Reset()                    { *m = GeneratedCodeInfo{} }
+func (m *GeneratedCodeInfo) String() string            { return proto.CompactTextString(m) }
+func (*GeneratedCodeInfo) ProtoMessage()               {}
+func (*GeneratedCodeInfo) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{19} }
+
+func (m *GeneratedCodeInfo) GetAnnotation() []*GeneratedCodeInfo_Annotation {
+	if m != nil {
+		return m.Annotation
+	}
+	return nil
+}
+
+type GeneratedCodeInfo_Annotation struct {
+	// Identifies the element in the original source .proto file. This field
+	// is formatted the same as SourceCodeInfo.Location.path.
+	Path []int32 `protobuf:"varint,1,rep,packed,name=path" json:"path,omitempty"`
+	// Identifies the filesystem path to the original source .proto.
+	SourceFile *string `protobuf:"bytes,2,opt,name=source_file,json=sourceFile" json:"source_file,omitempty"`
+	// Identifies the starting offset in bytes in the generated code
+	// that relates to the identified object.
+	Begin *int32 `protobuf:"varint,3,opt,name=begin" json:"begin,omitempty"`
+	// Identifies the ending offset in bytes in the generated code that
+	// relates to the identified offset. The end offset should be one past
+	// the last relevant byte (so the length of the text = end - begin).
+	End              *int32 `protobuf:"varint,4,opt,name=end" json:"end,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *GeneratedCodeInfo_Annotation) Reset()         { *m = GeneratedCodeInfo_Annotation{} }
+func (m *GeneratedCodeInfo_Annotation) String() string { return proto.CompactTextString(m) }
+func (*GeneratedCodeInfo_Annotation) ProtoMessage()    {}
+func (*GeneratedCodeInfo_Annotation) Descriptor() ([]byte, []int) {
+	return fileDescriptor0, []int{19, 0}
+}
+
+func (m *GeneratedCodeInfo_Annotation) GetPath() []int32 {
+	if m != nil {
+		return m.Path
+	}
+	return nil
+}
+
+func (m *GeneratedCodeInfo_Annotation) GetSourceFile() string {
+	if m != nil && m.SourceFile != nil {
+		return *m.SourceFile
+	}
+	return ""
+}
+
+func (m *GeneratedCodeInfo_Annotation) GetBegin() int32 {
+	if m != nil && m.Begin != nil {
+		return *m.Begin
+	}
+	return 0
+}
+
+func (m *GeneratedCodeInfo_Annotation) GetEnd() int32 {
+	if m != nil && m.End != nil {
+		return *m.End
+	}
+	return 0
+}
+
+func init() {
+	proto.RegisterType((*FileDescriptorSet)(nil), "google.protobuf.FileDescriptorSet")
+	proto.RegisterType((*FileDescriptorProto)(nil), "google.protobuf.FileDescriptorProto")
+	proto.RegisterType((*DescriptorProto)(nil), "google.protobuf.DescriptorProto")
+	proto.RegisterType((*DescriptorProto_ExtensionRange)(nil), "google.protobuf.DescriptorProto.ExtensionRange")
+	proto.RegisterType((*DescriptorProto_ReservedRange)(nil), "google.protobuf.DescriptorProto.ReservedRange")
+	proto.RegisterType((*FieldDescriptorProto)(nil), "google.protobuf.FieldDescriptorProto")
+	proto.RegisterType((*OneofDescriptorProto)(nil), "google.protobuf.OneofDescriptorProto")
+	proto.RegisterType((*EnumDescriptorProto)(nil), "google.protobuf.EnumDescriptorProto")
+	proto.RegisterType((*EnumValueDescriptorProto)(nil), "google.protobuf.EnumValueDescriptorProto")
+	proto.RegisterType((*ServiceDescriptorProto)(nil), "google.protobuf.ServiceDescriptorProto")
+	proto.RegisterType((*MethodDescriptorProto)(nil), "google.protobuf.MethodDescriptorProto")
+	proto.RegisterType((*FileOptions)(nil), "google.protobuf.FileOptions")
+	proto.RegisterType((*MessageOptions)(nil), "google.protobuf.MessageOptions")
+	proto.RegisterType((*FieldOptions)(nil), "google.protobuf.FieldOptions")
+	proto.RegisterType((*OneofOptions)(nil), "google.protobuf.OneofOptions")
+	proto.RegisterType((*EnumOptions)(nil), "google.protobuf.EnumOptions")
+	proto.RegisterType((*EnumValueOptions)(nil), "google.protobuf.EnumValueOptions")
+	proto.RegisterType((*ServiceOptions)(nil), "google.protobuf.ServiceOptions")
+	proto.RegisterType((*MethodOptions)(nil), "google.protobuf.MethodOptions")
+	proto.RegisterType((*UninterpretedOption)(nil), "google.protobuf.UninterpretedOption")
+	proto.RegisterType((*UninterpretedOption_NamePart)(nil), "google.protobuf.UninterpretedOption.NamePart")
+	proto.RegisterType((*SourceCodeInfo)(nil), "google.protobuf.SourceCodeInfo")
+	proto.RegisterType((*SourceCodeInfo_Location)(nil), "google.protobuf.SourceCodeInfo.Location")
+	proto.RegisterType((*GeneratedCodeInfo)(nil), "google.protobuf.GeneratedCodeInfo")
+	proto.RegisterType((*GeneratedCodeInfo_Annotation)(nil), "google.protobuf.GeneratedCodeInfo.Annotation")
+	proto.RegisterEnum("google.protobuf.FieldDescriptorProto_Type", FieldDescriptorProto_Type_name, FieldDescriptorProto_Type_value)
+	proto.RegisterEnum("google.protobuf.FieldDescriptorProto_Label", FieldDescriptorProto_Label_name, FieldDescriptorProto_Label_value)
+	proto.RegisterEnum("google.protobuf.FileOptions_OptimizeMode", FileOptions_OptimizeMode_name, FileOptions_OptimizeMode_value)
+	proto.RegisterEnum("google.protobuf.FieldOptions_CType", FieldOptions_CType_name, FieldOptions_CType_value)
+	proto.RegisterEnum("google.protobuf.FieldOptions_JSType", FieldOptions_JSType_name, FieldOptions_JSType_value)
+}
+
+func init() { proto.RegisterFile("google/protobuf/descriptor.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
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+	0x32, 0x1a, 0x52, 0x9c, 0x68, 0x34, 0x7e, 0xb3, 0x04, 0xd5, 0x54, 0x5b, 0x87, 0xaf, 0x42, 0xed,
+	0x29, 0x79, 0x4e, 0x8c, 0xb8, 0x55, 0x97, 0x91, 0xa8, 0x72, 0xac, 0x17, 0xb5, 0xeb, 0x1f, 0xc2,
+	0xba, 0xa0, 0xb8, 0xe3, 0x90, 0xfa, 0x86, 0xe9, 0x90, 0x20, 0x10, 0x41, 0x2b, 0x0b, 0x2a, 0xe6,
+	0xb2, 0x2e, 0x17, 0xed, 0xc5, 0x12, 0x7c, 0x1f, 0xd6, 0x84, 0xc6, 0x68, 0xec, 0x84, 0xb6, 0xe7,
+	0x50, 0x83, 0x7f, 0x3c, 0x04, 0xa2, 0x10, 0x27, 0x9e, 0xad, 0x72, 0xc6, 0x61, 0x44, 0xe0, 0x1e,
+	0x05, 0xb8, 0x0d, 0xef, 0x0a, 0xb5, 0x21, 0x65, 0xd4, 0x27, 0x21, 0x35, 0xe8, 0x2f, 0xc7, 0xc4,
+	0x09, 0x0c, 0xc2, 0x2c, 0xe3, 0x8c, 0x04, 0x67, 0xea, 0x3a, 0x37, 0xb0, 0x9b, 0x53, 0x15, 0xfd,
+	0x32, 0x27, 0xee, 0x47, 0x3c, 0x4d, 0xd0, 0x5a, 0xcc, 0xfa, 0x8c, 0x04, 0x67, 0x78, 0x07, 0x2e,
+	0x09, 0x2b, 0x41, 0xe8, 0xdb, 0x6c, 0x68, 0x98, 0x67, 0xd4, 0x7c, 0x66, 0x8c, 0xc3, 0xc1, 0x43,
+	0xf5, 0xed, 0xf4, 0xfc, 0xc2, 0xc3, 0xbe, 0xe0, 0xec, 0x71, 0xca, 0x49, 0x38, 0x78, 0x88, 0xfb,
+	0x50, 0xe3, 0x9b, 0x31, 0xb2, 0xbf, 0xa4, 0xc6, 0xc0, 0xf5, 0xc5, 0xcd, 0x52, 0x9f, 0x73, 0xb2,
+	0x53, 0x11, 0x6c, 0x76, 0x23, 0x85, 0x43, 0xd7, 0xa2, 0x3b, 0xc5, 0x7e, 0x4f, 0xd3, 0xda, 0x7a,
+	0x35, 0xb6, 0xf2, 0xc8, 0xf5, 0x79, 0x42, 0x0d, 0xdd, 0x24, 0xc0, 0x55, 0x99, 0x50, 0x43, 0x37,
+	0x0e, 0xef, 0x7d, 0x58, 0x33, 0x4d, 0xb9, 0x66, 0xdb, 0x34, 0xa2, 0x16, 0x3f, 0x50, 0x51, 0x26,
+	0x58, 0xa6, 0xb9, 0x2f, 0x09, 0x51, 0x8e, 0x07, 0xf8, 0x63, 0x78, 0x73, 0x12, 0xac, 0xb4, 0xe2,
+	0xea, 0xcc, 0x2a, 0xa7, 0x55, 0xef, 0xc3, 0x9a, 0x77, 0x3e, 0xab, 0x88, 0x33, 0x33, 0x7a, 0xe7,
+	0xd3, 0x6a, 0xd7, 0xc5, 0x67, 0x9b, 0x4f, 0x4d, 0x12, 0x52, 0x4b, 0x7d, 0x2b, 0xcd, 0x4e, 0x09,
+	0xf0, 0x1d, 0x40, 0xa6, 0x69, 0x50, 0x46, 0x4e, 0x1d, 0x6a, 0x10, 0x9f, 0x32, 0x12, 0xa8, 0x57,
+	0xd2, 0xe4, 0xba, 0x69, 0x6a, 0x42, 0xda, 0x12, 0x42, 0x7c, 0x0b, 0x56, 0xdd, 0xd3, 0xa7, 0xa6,
+	0xcc, 0x2c, 0xc3, 0xf3, 0xe9, 0xc0, 0x7e, 0xa9, 0x5e, 0x13, 0x61, 0x5a, 0xe1, 0x02, 0x91, 0x57,
+	0x3d, 0x01, 0xe3, 0x9b, 0x80, 0xcc, 0xe0, 0x8c, 0xf8, 0x9e, 0xb8, 0xda, 0x03, 0x8f, 0x98, 0x54,
+	0xbd, 0x2e, 0xa9, 0x12, 0x3f, 0x8a, 0x61, 0xfc, 0x04, 0xd6, 0xc7, 0xcc, 0x66, 0x21, 0xf5, 0x3d,
+	0x9f, 0xf2, 0x0e, 0x5d, 0x1e, 0x33, 0xf5, 0x5f, 0x4b, 0x0b, 0x7a, 0xec, 0x93, 0x34, 0x5b, 0xee,
+	0xae, 0xbe, 0x36, 0x9e, 0x05, 0x1b, 0x3b, 0x50, 0x4b, 0x6f, 0x3a, 0xae, 0x80, 0xdc, 0x76, 0xa4,
+	0xf0, 0x0b, 0x74, 0xaf, 0xdb, 0xe6, 0x57, 0xdf, 0x17, 0x1a, 0xca, 0xf1, 0x2b, 0xf8, 0xa0, 0x73,
+	0xac, 0x19, 0xfa, 0xc9, 0xd1, 0x71, 0xe7, 0x50, 0x43, 0xf9, 0x5b, 0x95, 0xf2, 0xbf, 0x97, 0xd0,
+	0xab, 0x57, 0xaf, 0x5e, 0xe5, 0x1e, 0x17, 0xca, 0x1f, 0xa0, 0x1b, 0x8d, 0xbf, 0xe6, 0xa0, 0x9e,
+	0x6d, 0x7e, 0xf1, 0x4f, 0xe0, 0xad, 0xf8, 0x4b, 0x35, 0xa0, 0xa1, 0xf1, 0xc2, 0xf6, 0x45, 0x36,
+	0x8e, 0x88, 0x6c, 0x1f, 0x93, 0x40, 0xae, 0x47, 0xac, 0x3e, 0x0d, 0x7f, 0x61, 0xfb, 0x3c, 0xd7,
+	0x46, 0x24, 0xc4, 0x07, 0x70, 0x85, 0xb9, 0x46, 0x10, 0x12, 0x66, 0x11, 0xdf, 0x32, 0x26, 0x6f,
+	0x04, 0x06, 0x31, 0x4d, 0x1a, 0x04, 0xae, 0xbc, 0x05, 0x12, 0x2b, 0xef, 0x30, 0xb7, 0x1f, 0x91,
+	0x27, 0xe5, 0xb1, 0x15, 0x51, 0xa7, 0x36, 0x3d, 0xbf, 0x68, 0xd3, 0xdf, 0x86, 0xca, 0x88, 0x78,
+	0x06, 0x65, 0xa1, 0x7f, 0x2e, 0x5a, 0xb6, 0xb2, 0x5e, 0x1e, 0x11, 0x4f, 0xe3, 0xe3, 0xef, 0x6e,
+	0x27, 0xb2, 0xd1, 0x2c, 0xa3, 0x4a, 0xe3, 0x1f, 0x79, 0xa8, 0xa5, 0x9b, 0x37, 0xde, 0x0b, 0x9b,
+	0xa2, 0x50, 0x2b, 0xe2, 0x28, 0xbf, 0xff, 0x8d, 0xad, 0x5e, 0x73, 0x8f, 0x57, 0xf0, 0x9d, 0x92,
+	0x6c, 0xa9, 0x74, 0xa9, 0xc9, 0x6f, 0x4f, 0x7e, 0x78, 0xa9, 0x6c, 0xd4, 0xcb, 0x7a, 0x34, 0xc2,
+	0xfb, 0x50, 0x7a, 0x1a, 0x08, 0xdb, 0x25, 0x61, 0xfb, 0xda, 0x37, 0xdb, 0x7e, 0xdc, 0x17, 0xc6,
+	0x2b, 0x8f, 0xfb, 0xc6, 0x51, 0x57, 0x3f, 0x6c, 0x1d, 0xe8, 0x91, 0x3a, 0xbe, 0x0c, 0x05, 0x87,
+	0x7c, 0x79, 0x9e, 0xad, 0xf5, 0x02, 0xba, 0x68, 0xf8, 0x2f, 0x43, 0xe1, 0x05, 0x25, 0xcf, 0xb2,
+	0x15, 0x56, 0x40, 0xdf, 0xe1, 0x31, 0xb8, 0x03, 0x45, 0x11, 0x2f, 0x0c, 0x10, 0x45, 0x0c, 0xbd,
+	0x81, 0xcb, 0x50, 0xd8, 0xeb, 0xea, 0xfc, 0x28, 0x20, 0xa8, 0x49, 0xd4, 0xe8, 0x75, 0xb4, 0x3d,
+	0x0d, 0xe5, 0x1a, 0xf7, 0xa1, 0x24, 0x83, 0xc0, 0x8f, 0x49, 0x12, 0x06, 0xf4, 0x46, 0x34, 0x8c,
+	0x6c, 0x28, 0xb1, 0xf4, 0xe4, 0x70, 0x57, 0xd3, 0x51, 0x2e, 0xbb, 0xc9, 0x05, 0x54, 0x6c, 0x04,
+	0x50, 0x4b, 0x77, 0x6f, 0xdf, 0x4b, 0x7e, 0x35, 0xfe, 0xa2, 0x40, 0x35, 0xd5, 0x8d, 0xf1, 0x3e,
+	0x80, 0x38, 0x8e, 0xfb, 0xc2, 0x20, 0x8e, 0x4d, 0x82, 0x28, 0x35, 0x40, 0x40, 0x2d, 0x8e, 0x5c,
+	0x74, 0xeb, 0xbe, 0x17, 0xe7, 0xff, 0xa8, 0x00, 0x9a, 0xee, 0xe4, 0xa6, 0x1c, 0x54, 0x7e, 0x50,
+	0x07, 0xff, 0xa0, 0x40, 0x3d, 0xdb, 0xbe, 0x4d, 0xb9, 0x77, 0xf5, 0x07, 0x75, 0xef, 0xf7, 0x0a,
+	0x2c, 0x67, 0x9a, 0xb6, 0xff, 0x2b, 0xef, 0x7e, 0x97, 0x87, 0xb5, 0x39, 0x7a, 0xb8, 0x15, 0x75,
+	0xb7, 0xb2, 0xe1, 0xfe, 0xf1, 0x45, 0xe6, 0x6a, 0xf2, 0xfb, 0xb3, 0x47, 0xfc, 0x30, 0x6a, 0x86,
+	0x6f, 0x02, 0xb2, 0x2d, 0xca, 0x42, 0x7b, 0x60, 0x53, 0x3f, 0xfa, 0x22, 0x97, 0x2d, 0xef, 0xca,
+	0x04, 0x97, 0x1f, 0xe5, 0x3f, 0x02, 0xec, 0xb9, 0x81, 0x1d, 0xda, 0xcf, 0xa9, 0x61, 0xb3, 0xf8,
+	0xf3, 0x9d, 0xb7, 0xc0, 0x05, 0x1d, 0xc5, 0x92, 0x0e, 0x0b, 0x13, 0x36, 0xa3, 0x43, 0x32, 0xc5,
+	0xe6, 0x15, 0x30, 0xaf, 0xa3, 0x58, 0x92, 0xb0, 0xaf, 0x42, 0xcd, 0x72, 0xc7, 0xbc, 0xa1, 0x90,
+	0x3c, 0x5e, 0x70, 0x15, 0xbd, 0x2a, 0xb1, 0x84, 0x12, 0x75, 0x7c, 0x93, 0x77, 0x83, 0x9a, 0x5e,
+	0x95, 0x98, 0xa4, 0xdc, 0x80, 0x15, 0x32, 0x1c, 0xfa, 0xdc, 0x78, 0x6c, 0x48, 0xf6, 0xb0, 0xf5,
+	0x04, 0x16, 0xc4, 0x8d, 0xc7, 0x50, 0x8e, 0xe3, 0xc0, 0x6f, 0x36, 0x1e, 0x09, 0xc3, 0x93, 0xaf,
+	0x37, 0xb9, 0xad, 0x8a, 0x5e, 0x66, 0xb1, 0xf0, 0x2a, 0xd4, 0xec, 0xc0, 0x98, 0x3c, 0x23, 0xe6,
+	0x36, 0x73, 0x5b, 0x65, 0xbd, 0x6a, 0x07, 0xc9, 0xbb, 0x51, 0xe3, 0xeb, 0x1c, 0xd4, 0xb3, 0xcf,
+	0xa0, 0xb8, 0x0d, 0x65, 0xc7, 0x35, 0x89, 0x48, 0x04, 0xf9, 0x06, 0xbf, 0xf5, 0x9a, 0x97, 0xd3,
+	0xe6, 0x41, 0xc4, 0xd7, 0x13, 0xcd, 0x8d, 0xbf, 0x29, 0x50, 0x8e, 0x61, 0x7c, 0x09, 0x0a, 0x1e,
+	0x09, 0xcf, 0x84, 0xb9, 0xe2, 0x6e, 0x0e, 0x29, 0xba, 0x18, 0x73, 0x3c, 0xf0, 0x08, 0x13, 0x29,
+	0x10, 0xe1, 0x7c, 0xcc, 0xf7, 0xd5, 0xa1, 0xc4, 0x12, 0x0d, 0xb2, 0x3b, 0x1a, 0x51, 0x16, 0x06,
+	0xf1, 0xbe, 0x46, 0xf8, 0x5e, 0x04, 0xe3, 0xdb, 0xb0, 0x1a, 0xfa, 0xc4, 0x76, 0x32, 0xdc, 0x82,
+	0xe0, 0xa2, 0x58, 0x90, 0x90, 0x77, 0xe0, 0x72, 0x6c, 0xd7, 0xa2, 0x21, 0x31, 0xcf, 0xa8, 0x35,
+	0x51, 0x2a, 0x89, 0x37, 0xb6, 0xb7, 0x22, 0x42, 0x3b, 0x92, 0xc7, 0xba, 0x8d, 0xbf, 0x2b, 0xb0,
+	0x1a, 0xb7, 0xf4, 0x56, 0x12, 0xac, 0x43, 0x00, 0xc2, 0x98, 0x1b, 0xa6, 0xc3, 0x35, 0x9b, 0xca,
+	0x33, 0x7a, 0xcd, 0x56, 0xa2, 0xa4, 0xa7, 0x0c, 0x6c, 0x8c, 0x00, 0x26, 0x92, 0x85, 0x61, 0xbb,
+	0x02, 0xd5, 0xe8, 0x8d, 0x5b, 0xfc, 0xa3, 0x44, 0x7e, 0x04, 0x82, 0x84, 0x78, 0xef, 0x8f, 0xd7,
+	0xa1, 0x78, 0x4a, 0x87, 0x36, 0x8b, 0x5e, 0xde, 0xe4, 0x20, 0x7e, 0xcf, 0x2b, 0x24, 0xef, 0x79,
+	0xbb, 0x4f, 0x60, 0xcd, 0x74, 0x47, 0xd3, 0xee, 0xee, 0xa2, 0xa9, 0x0f, 0xd1, 0xe0, 0x33, 0xe5,
+	0x0b, 0x98, 0x74, 0x6a, 0x5f, 0xe5, 0xf2, 0xfb, 0xbd, 0xdd, 0x3f, 0xe5, 0x36, 0xf6, 0xa5, 0x5e,
+	0x2f, 0x5e, 0xa6, 0x4e, 0x07, 0x0e, 0x35, 0xb9, 0xeb, 0xff, 0x0d, 0x00, 0x00, 0xff, 0xff, 0x5f,
+	0x1c, 0x48, 0x4f, 0x0d, 0x1a, 0x00, 0x00,
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/doc.go b/vendor/github.com/golang/protobuf/protoc-gen-go/doc.go
new file mode 100644
index 000000000..0d6055d61
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/doc.go
@@ -0,0 +1,51 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/*
+	A plugin for the Google protocol buffer compiler to generate Go code.
+	Run it by building this program and putting it in your path with the name
+		protoc-gen-go
+	That word 'go' at the end becomes part of the option string set for the
+	protocol compiler, so once the protocol compiler (protoc) is installed
+	you can run
+		protoc --go_out=output_directory input_directory/file.proto
+	to generate Go bindings for the protocol defined by file.proto.
+	With that input, the output will be written to
+		output_directory/file.pb.go
+
+	The generated code is documented in the package comment for
+	the library.
+
+	See the README and documentation for protocol buffers to learn more:
+		https://developers.google.com/protocol-buffers/
+
+*/
+package documentation
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/generator/Makefile b/vendor/github.com/golang/protobuf/protoc-gen-go/generator/Makefile
new file mode 100644
index 000000000..b5715c357
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/generator/Makefile
@@ -0,0 +1,40 @@
+# Go support for Protocol Buffers - Google's data interchange format
+#
+# Copyright 2010 The Go Authors.  All rights reserved.
+# https://github.com/golang/protobuf
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+include $(GOROOT)/src/Make.inc
+
+TARG=github.com/golang/protobuf/compiler/generator
+GOFILES=\
+	generator.go\
+
+DEPS=../descriptor ../plugin ../../proto
+
+include $(GOROOT)/src/Make.pkg
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/generator/generator.go b/vendor/github.com/golang/protobuf/protoc-gen-go/generator/generator.go
new file mode 100644
index 000000000..a5879fe67
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/generator/generator.go
@@ -0,0 +1,2806 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/*
+	The code generator for the plugin for the Google protocol buffer compiler.
+	It generates Go code from the protocol buffer description files read by the
+	main routine.
+*/
+package generator
+
+import (
+	"bufio"
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"go/parser"
+	"go/printer"
+	"go/token"
+	"log"
+	"os"
+	"path"
+	"strconv"
+	"strings"
+	"unicode"
+	"unicode/utf8"
+
+	"github.com/golang/protobuf/proto"
+
+	"github.com/golang/protobuf/protoc-gen-go/descriptor"
+	plugin "github.com/golang/protobuf/protoc-gen-go/plugin"
+)
+
+// generatedCodeVersion indicates a version of the generated code.
+// It is incremented whenever an incompatibility between the generated code and
+// proto package is introduced; the generated code references
+// a constant, proto.ProtoPackageIsVersionN (where N is generatedCodeVersion).
+const generatedCodeVersion = 2
+
+// A Plugin provides functionality to add to the output during Go code generation,
+// such as to produce RPC stubs.
+type Plugin interface {
+	// Name identifies the plugin.
+	Name() string
+	// Init is called once after data structures are built but before
+	// code generation begins.
+	Init(g *Generator)
+	// Generate produces the code generated by the plugin for this file,
+	// except for the imports, by calling the generator's methods P, In, and Out.
+	Generate(file *FileDescriptor)
+	// GenerateImports produces the import declarations for this file.
+	// It is called after Generate.
+	GenerateImports(file *FileDescriptor)
+}
+
+var plugins []Plugin
+
+// RegisterPlugin installs a (second-order) plugin to be run when the Go output is generated.
+// It is typically called during initialization.
+func RegisterPlugin(p Plugin) {
+	plugins = append(plugins, p)
+}
+
+// Each type we import as a protocol buffer (other than FileDescriptorProto) needs
+// a pointer to the FileDescriptorProto that represents it.  These types achieve that
+// wrapping by placing each Proto inside a struct with the pointer to its File. The
+// structs have the same names as their contents, with "Proto" removed.
+// FileDescriptor is used to store the things that it points to.
+
+// The file and package name method are common to messages and enums.
+type common struct {
+	file *descriptor.FileDescriptorProto // File this object comes from.
+}
+
+// PackageName is name in the package clause in the generated file.
+func (c *common) PackageName() string { return uniquePackageOf(c.file) }
+
+func (c *common) File() *descriptor.FileDescriptorProto { return c.file }
+
+func fileIsProto3(file *descriptor.FileDescriptorProto) bool {
+	return file.GetSyntax() == "proto3"
+}
+
+func (c *common) proto3() bool { return fileIsProto3(c.file) }
+
+// Descriptor represents a protocol buffer message.
+type Descriptor struct {
+	common
+	*descriptor.DescriptorProto
+	parent   *Descriptor            // The containing message, if any.
+	nested   []*Descriptor          // Inner messages, if any.
+	enums    []*EnumDescriptor      // Inner enums, if any.
+	ext      []*ExtensionDescriptor // Extensions, if any.
+	typename []string               // Cached typename vector.
+	index    int                    // The index into the container, whether the file or another message.
+	path     string                 // The SourceCodeInfo path as comma-separated integers.
+	group    bool
+}
+
+// TypeName returns the elements of the dotted type name.
+// The package name is not part of this name.
+func (d *Descriptor) TypeName() []string {
+	if d.typename != nil {
+		return d.typename
+	}
+	n := 0
+	for parent := d; parent != nil; parent = parent.parent {
+		n++
+	}
+	s := make([]string, n, n)
+	for parent := d; parent != nil; parent = parent.parent {
+		n--
+		s[n] = parent.GetName()
+	}
+	d.typename = s
+	return s
+}
+
+// EnumDescriptor describes an enum. If it's at top level, its parent will be nil.
+// Otherwise it will be the descriptor of the message in which it is defined.
+type EnumDescriptor struct {
+	common
+	*descriptor.EnumDescriptorProto
+	parent   *Descriptor // The containing message, if any.
+	typename []string    // Cached typename vector.
+	index    int         // The index into the container, whether the file or a message.
+	path     string      // The SourceCodeInfo path as comma-separated integers.
+}
+
+// TypeName returns the elements of the dotted type name.
+// The package name is not part of this name.
+func (e *EnumDescriptor) TypeName() (s []string) {
+	if e.typename != nil {
+		return e.typename
+	}
+	name := e.GetName()
+	if e.parent == nil {
+		s = make([]string, 1)
+	} else {
+		pname := e.parent.TypeName()
+		s = make([]string, len(pname)+1)
+		copy(s, pname)
+	}
+	s[len(s)-1] = name
+	e.typename = s
+	return s
+}
+
+// Everything but the last element of the full type name, CamelCased.
+// The values of type Foo.Bar are call Foo_value1... not Foo_Bar_value1... .
+func (e *EnumDescriptor) prefix() string {
+	if e.parent == nil {
+		// If the enum is not part of a message, the prefix is just the type name.
+		return CamelCase(*e.Name) + "_"
+	}
+	typeName := e.TypeName()
+	return CamelCaseSlice(typeName[0:len(typeName)-1]) + "_"
+}
+
+// The integer value of the named constant in this enumerated type.
+func (e *EnumDescriptor) integerValueAsString(name string) string {
+	for _, c := range e.Value {
+		if c.GetName() == name {
+			return fmt.Sprint(c.GetNumber())
+		}
+	}
+	log.Fatal("cannot find value for enum constant")
+	return ""
+}
+
+// ExtensionDescriptor describes an extension. If it's at top level, its parent will be nil.
+// Otherwise it will be the descriptor of the message in which it is defined.
+type ExtensionDescriptor struct {
+	common
+	*descriptor.FieldDescriptorProto
+	parent *Descriptor // The containing message, if any.
+}
+
+// TypeName returns the elements of the dotted type name.
+// The package name is not part of this name.
+func (e *ExtensionDescriptor) TypeName() (s []string) {
+	name := e.GetName()
+	if e.parent == nil {
+		// top-level extension
+		s = make([]string, 1)
+	} else {
+		pname := e.parent.TypeName()
+		s = make([]string, len(pname)+1)
+		copy(s, pname)
+	}
+	s[len(s)-1] = name
+	return s
+}
+
+// DescName returns the variable name used for the generated descriptor.
+func (e *ExtensionDescriptor) DescName() string {
+	// The full type name.
+	typeName := e.TypeName()
+	// Each scope of the extension is individually CamelCased, and all are joined with "_" with an "E_" prefix.
+	for i, s := range typeName {
+		typeName[i] = CamelCase(s)
+	}
+	return "E_" + strings.Join(typeName, "_")
+}
+
+// ImportedDescriptor describes a type that has been publicly imported from another file.
+type ImportedDescriptor struct {
+	common
+	o Object
+}
+
+func (id *ImportedDescriptor) TypeName() []string { return id.o.TypeName() }
+
+// FileDescriptor describes an protocol buffer descriptor file (.proto).
+// It includes slices of all the messages and enums defined within it.
+// Those slices are constructed by WrapTypes.
+type FileDescriptor struct {
+	*descriptor.FileDescriptorProto
+	desc []*Descriptor          // All the messages defined in this file.
+	enum []*EnumDescriptor      // All the enums defined in this file.
+	ext  []*ExtensionDescriptor // All the top-level extensions defined in this file.
+	imp  []*ImportedDescriptor  // All types defined in files publicly imported by this file.
+
+	// Comments, stored as a map of path (comma-separated integers) to the comment.
+	comments map[string]*descriptor.SourceCodeInfo_Location
+
+	// The full list of symbols that are exported,
+	// as a map from the exported object to its symbols.
+	// This is used for supporting public imports.
+	exported map[Object][]symbol
+
+	index int // The index of this file in the list of files to generate code for
+
+	proto3 bool // whether to generate proto3 code for this file
+}
+
+// PackageName is the package name we'll use in the generated code to refer to this file.
+func (d *FileDescriptor) PackageName() string { return uniquePackageOf(d.FileDescriptorProto) }
+
+// VarName is the variable name we'll use in the generated code to refer
+// to the compressed bytes of this descriptor. It is not exported, so
+// it is only valid inside the generated package.
+func (d *FileDescriptor) VarName() string { return fmt.Sprintf("fileDescriptor%d", d.index) }
+
+// goPackageOption interprets the file's go_package option.
+// If there is no go_package, it returns ("", "", false).
+// If there's a simple name, it returns ("", pkg, true).
+// If the option implies an import path, it returns (impPath, pkg, true).
+func (d *FileDescriptor) goPackageOption() (impPath, pkg string, ok bool) {
+	pkg = d.GetOptions().GetGoPackage()
+	if pkg == "" {
+		return
+	}
+	ok = true
+	// The presence of a slash implies there's an import path.
+	slash := strings.LastIndex(pkg, "/")
+	if slash < 0 {
+		return
+	}
+	impPath, pkg = pkg, pkg[slash+1:]
+	// A semicolon-delimited suffix overrides the package name.
+	sc := strings.IndexByte(impPath, ';')
+	if sc < 0 {
+		return
+	}
+	impPath, pkg = impPath[:sc], impPath[sc+1:]
+	return
+}
+
+// goPackageName returns the Go package name to use in the
+// generated Go file.  The result explicit reports whether the name
+// came from an option go_package statement.  If explicit is false,
+// the name was derived from the protocol buffer's package statement
+// or the input file name.
+func (d *FileDescriptor) goPackageName() (name string, explicit bool) {
+	// Does the file have a "go_package" option?
+	if _, pkg, ok := d.goPackageOption(); ok {
+		return pkg, true
+	}
+
+	// Does the file have a package clause?
+	if pkg := d.GetPackage(); pkg != "" {
+		return pkg, false
+	}
+	// Use the file base name.
+	return baseName(d.GetName()), false
+}
+
+// goFileName returns the output name for the generated Go file.
+func (d *FileDescriptor) goFileName() string {
+	name := *d.Name
+	if ext := path.Ext(name); ext == ".proto" || ext == ".protodevel" {
+		name = name[:len(name)-len(ext)]
+	}
+	name += ".pb.go"
+
+	// Does the file have a "go_package" option?
+	// If it does, it may override the filename.
+	if impPath, _, ok := d.goPackageOption(); ok && impPath != "" {
+		// Replace the existing dirname with the declared import path.
+		_, name = path.Split(name)
+		name = path.Join(impPath, name)
+		return name
+	}
+
+	return name
+}
+
+func (d *FileDescriptor) addExport(obj Object, sym symbol) {
+	d.exported[obj] = append(d.exported[obj], sym)
+}
+
+// symbol is an interface representing an exported Go symbol.
+type symbol interface {
+	// GenerateAlias should generate an appropriate alias
+	// for the symbol from the named package.
+	GenerateAlias(g *Generator, pkg string)
+}
+
+type messageSymbol struct {
+	sym                         string
+	hasExtensions, isMessageSet bool
+	hasOneof                    bool
+	getters                     []getterSymbol
+}
+
+type getterSymbol struct {
+	name     string
+	typ      string
+	typeName string // canonical name in proto world; empty for proto.Message and similar
+	genType  bool   // whether typ contains a generated type (message/group/enum)
+}
+
+func (ms *messageSymbol) GenerateAlias(g *Generator, pkg string) {
+	remoteSym := pkg + "." + ms.sym
+
+	g.P("type ", ms.sym, " ", remoteSym)
+	g.P("func (m *", ms.sym, ") Reset() { (*", remoteSym, ")(m).Reset() }")
+	g.P("func (m *", ms.sym, ") String() string { return (*", remoteSym, ")(m).String() }")
+	g.P("func (*", ms.sym, ") ProtoMessage() {}")
+	if ms.hasExtensions {
+		g.P("func (*", ms.sym, ") ExtensionRangeArray() []", g.Pkg["proto"], ".ExtensionRange ",
+			"{ return (*", remoteSym, ")(nil).ExtensionRangeArray() }")
+		if ms.isMessageSet {
+			g.P("func (m *", ms.sym, ") Marshal() ([]byte, error) ",
+				"{ return (*", remoteSym, ")(m).Marshal() }")
+			g.P("func (m *", ms.sym, ") Unmarshal(buf []byte) error ",
+				"{ return (*", remoteSym, ")(m).Unmarshal(buf) }")
+		}
+	}
+	if ms.hasOneof {
+		// Oneofs and public imports do not mix well.
+		// We can make them work okay for the binary format,
+		// but they're going to break weirdly for text/JSON.
+		enc := "_" + ms.sym + "_OneofMarshaler"
+		dec := "_" + ms.sym + "_OneofUnmarshaler"
+		size := "_" + ms.sym + "_OneofSizer"
+		encSig := "(msg " + g.Pkg["proto"] + ".Message, b *" + g.Pkg["proto"] + ".Buffer) error"
+		decSig := "(msg " + g.Pkg["proto"] + ".Message, tag, wire int, b *" + g.Pkg["proto"] + ".Buffer) (bool, error)"
+		sizeSig := "(msg " + g.Pkg["proto"] + ".Message) int"
+		g.P("func (m *", ms.sym, ") XXX_OneofFuncs() (func", encSig, ", func", decSig, ", func", sizeSig, ", []interface{}) {")
+		g.P("return ", enc, ", ", dec, ", ", size, ", nil")
+		g.P("}")
+
+		g.P("func ", enc, encSig, " {")
+		g.P("m := msg.(*", ms.sym, ")")
+		g.P("m0 := (*", remoteSym, ")(m)")
+		g.P("enc, _, _, _ := m0.XXX_OneofFuncs()")
+		g.P("return enc(m0, b)")
+		g.P("}")
+
+		g.P("func ", dec, decSig, " {")
+		g.P("m := msg.(*", ms.sym, ")")
+		g.P("m0 := (*", remoteSym, ")(m)")
+		g.P("_, dec, _, _ := m0.XXX_OneofFuncs()")
+		g.P("return dec(m0, tag, wire, b)")
+		g.P("}")
+
+		g.P("func ", size, sizeSig, " {")
+		g.P("m := msg.(*", ms.sym, ")")
+		g.P("m0 := (*", remoteSym, ")(m)")
+		g.P("_, _, size, _ := m0.XXX_OneofFuncs()")
+		g.P("return size(m0)")
+		g.P("}")
+	}
+	for _, get := range ms.getters {
+
+		if get.typeName != "" {
+			g.RecordTypeUse(get.typeName)
+		}
+		typ := get.typ
+		val := "(*" + remoteSym + ")(m)." + get.name + "()"
+		if get.genType {
+			// typ will be "*pkg.T" (message/group) or "pkg.T" (enum)
+			// or "map[t]*pkg.T" (map to message/enum).
+			// The first two of those might have a "[]" prefix if it is repeated.
+			// Drop any package qualifier since we have hoisted the type into this package.
+			rep := strings.HasPrefix(typ, "[]")
+			if rep {
+				typ = typ[2:]
+			}
+			isMap := strings.HasPrefix(typ, "map[")
+			star := typ[0] == '*'
+			if !isMap { // map types handled lower down
+				typ = typ[strings.Index(typ, ".")+1:]
+			}
+			if star {
+				typ = "*" + typ
+			}
+			if rep {
+				// Go does not permit conversion between slice types where both
+				// element types are named. That means we need to generate a bit
+				// of code in this situation.
+				// typ is the element type.
+				// val is the expression to get the slice from the imported type.
+
+				ctyp := typ // conversion type expression; "Foo" or "(*Foo)"
+				if star {
+					ctyp = "(" + typ + ")"
+				}
+
+				g.P("func (m *", ms.sym, ") ", get.name, "() []", typ, " {")
+				g.In()
+				g.P("o := ", val)
+				g.P("if o == nil {")
+				g.In()
+				g.P("return nil")
+				g.Out()
+				g.P("}")
+				g.P("s := make([]", typ, ", len(o))")
+				g.P("for i, x := range o {")
+				g.In()
+				g.P("s[i] = ", ctyp, "(x)")
+				g.Out()
+				g.P("}")
+				g.P("return s")
+				g.Out()
+				g.P("}")
+				continue
+			}
+			if isMap {
+				// Split map[keyTyp]valTyp.
+				bra, ket := strings.Index(typ, "["), strings.Index(typ, "]")
+				keyTyp, valTyp := typ[bra+1:ket], typ[ket+1:]
+				// Drop any package qualifier.
+				// Only the value type may be foreign.
+				star := valTyp[0] == '*'
+				valTyp = valTyp[strings.Index(valTyp, ".")+1:]
+				if star {
+					valTyp = "*" + valTyp
+				}
+
+				typ := "map[" + keyTyp + "]" + valTyp
+				g.P("func (m *", ms.sym, ") ", get.name, "() ", typ, " {")
+				g.P("o := ", val)
+				g.P("if o == nil { return nil }")
+				g.P("s := make(", typ, ", len(o))")
+				g.P("for k, v := range o {")
+				g.P("s[k] = (", valTyp, ")(v)")
+				g.P("}")
+				g.P("return s")
+				g.P("}")
+				continue
+			}
+			// Convert imported type into the forwarding type.
+			val = "(" + typ + ")(" + val + ")"
+		}
+
+		g.P("func (m *", ms.sym, ") ", get.name, "() ", typ, " { return ", val, " }")
+	}
+
+}
+
+type enumSymbol struct {
+	name   string
+	proto3 bool // Whether this came from a proto3 file.
+}
+
+func (es enumSymbol) GenerateAlias(g *Generator, pkg string) {
+	s := es.name
+	g.P("type ", s, " ", pkg, ".", s)
+	g.P("var ", s, "_name = ", pkg, ".", s, "_name")
+	g.P("var ", s, "_value = ", pkg, ".", s, "_value")
+	g.P("func (x ", s, ") String() string { return (", pkg, ".", s, ")(x).String() }")
+	if !es.proto3 {
+		g.P("func (x ", s, ") Enum() *", s, "{ return (*", s, ")((", pkg, ".", s, ")(x).Enum()) }")
+		g.P("func (x *", s, ") UnmarshalJSON(data []byte) error { return (*", pkg, ".", s, ")(x).UnmarshalJSON(data) }")
+	}
+}
+
+type constOrVarSymbol struct {
+	sym  string
+	typ  string // either "const" or "var"
+	cast string // if non-empty, a type cast is required (used for enums)
+}
+
+func (cs constOrVarSymbol) GenerateAlias(g *Generator, pkg string) {
+	v := pkg + "." + cs.sym
+	if cs.cast != "" {
+		v = cs.cast + "(" + v + ")"
+	}
+	g.P(cs.typ, " ", cs.sym, " = ", v)
+}
+
+// Object is an interface abstracting the abilities shared by enums, messages, extensions and imported objects.
+type Object interface {
+	PackageName() string // The name we use in our output (a_b_c), possibly renamed for uniqueness.
+	TypeName() []string
+	File() *descriptor.FileDescriptorProto
+}
+
+// Each package name we generate must be unique. The package we're generating
+// gets its own name but every other package must have a unique name that does
+// not conflict in the code we generate.  These names are chosen globally (although
+// they don't have to be, it simplifies things to do them globally).
+func uniquePackageOf(fd *descriptor.FileDescriptorProto) string {
+	s, ok := uniquePackageName[fd]
+	if !ok {
+		log.Fatal("internal error: no package name defined for " + fd.GetName())
+	}
+	return s
+}
+
+// Generator is the type whose methods generate the output, stored in the associated response structure.
+type Generator struct {
+	*bytes.Buffer
+
+	Request  *plugin.CodeGeneratorRequest  // The input.
+	Response *plugin.CodeGeneratorResponse // The output.
+
+	Param             map[string]string // Command-line parameters.
+	PackageImportPath string            // Go import path of the package we're generating code for
+	ImportPrefix      string            // String to prefix to imported package file names.
+	ImportMap         map[string]string // Mapping from .proto file name to import path
+
+	Pkg map[string]string // The names under which we import support packages
+
+	packageName      string                     // What we're calling ourselves.
+	allFiles         []*FileDescriptor          // All files in the tree
+	allFilesByName   map[string]*FileDescriptor // All files by filename.
+	genFiles         []*FileDescriptor          // Those files we will generate output for.
+	file             *FileDescriptor            // The file we are compiling now.
+	usedPackages     map[string]bool            // Names of packages used in current file.
+	typeNameToObject map[string]Object          // Key is a fully-qualified name in input syntax.
+	init             []string                   // Lines to emit in the init function.
+	indent           string
+	writeOutput      bool
+}
+
+// New creates a new generator and allocates the request and response protobufs.
+func New() *Generator {
+	g := new(Generator)
+	g.Buffer = new(bytes.Buffer)
+	g.Request = new(plugin.CodeGeneratorRequest)
+	g.Response = new(plugin.CodeGeneratorResponse)
+	return g
+}
+
+// Error reports a problem, including an error, and exits the program.
+func (g *Generator) Error(err error, msgs ...string) {
+	s := strings.Join(msgs, " ") + ":" + err.Error()
+	log.Print("protoc-gen-go: error:", s)
+	os.Exit(1)
+}
+
+// Fail reports a problem and exits the program.
+func (g *Generator) Fail(msgs ...string) {
+	s := strings.Join(msgs, " ")
+	log.Print("protoc-gen-go: error:", s)
+	os.Exit(1)
+}
+
+// CommandLineParameters breaks the comma-separated list of key=value pairs
+// in the parameter (a member of the request protobuf) into a key/value map.
+// It then sets file name mappings defined by those entries.
+func (g *Generator) CommandLineParameters(parameter string) {
+	g.Param = make(map[string]string)
+	for _, p := range strings.Split(parameter, ",") {
+		if i := strings.Index(p, "="); i < 0 {
+			g.Param[p] = ""
+		} else {
+			g.Param[p[0:i]] = p[i+1:]
+		}
+	}
+
+	g.ImportMap = make(map[string]string)
+	pluginList := "none" // Default list of plugin names to enable (empty means all).
+	for k, v := range g.Param {
+		switch k {
+		case "import_prefix":
+			g.ImportPrefix = v
+		case "import_path":
+			g.PackageImportPath = v
+		case "plugins":
+			pluginList = v
+		default:
+			if len(k) > 0 && k[0] == 'M' {
+				g.ImportMap[k[1:]] = v
+			}
+		}
+	}
+	if pluginList != "" {
+		// Amend the set of plugins.
+		enabled := make(map[string]bool)
+		for _, name := range strings.Split(pluginList, "+") {
+			enabled[name] = true
+		}
+		var nplugins []Plugin
+		for _, p := range plugins {
+			if enabled[p.Name()] {
+				nplugins = append(nplugins, p)
+			}
+		}
+		plugins = nplugins
+	}
+}
+
+// DefaultPackageName returns the package name printed for the object.
+// If its file is in a different package, it returns the package name we're using for this file, plus ".".
+// Otherwise it returns the empty string.
+func (g *Generator) DefaultPackageName(obj Object) string {
+	pkg := obj.PackageName()
+	if pkg == g.packageName {
+		return ""
+	}
+	return pkg + "."
+}
+
+// For each input file, the unique package name to use, underscored.
+var uniquePackageName = make(map[*descriptor.FileDescriptorProto]string)
+
+// Package names already registered.  Key is the name from the .proto file;
+// value is the name that appears in the generated code.
+var pkgNamesInUse = make(map[string]bool)
+
+// Create and remember a guaranteed unique package name for this file descriptor.
+// Pkg is the candidate name.  If f is nil, it's a builtin package like "proto" and
+// has no file descriptor.
+func RegisterUniquePackageName(pkg string, f *FileDescriptor) string {
+	// Convert dots to underscores before finding a unique alias.
+	pkg = strings.Map(badToUnderscore, pkg)
+
+	for i, orig := 1, pkg; pkgNamesInUse[pkg]; i++ {
+		// It's a duplicate; must rename.
+		pkg = orig + strconv.Itoa(i)
+	}
+	// Install it.
+	pkgNamesInUse[pkg] = true
+	if f != nil {
+		uniquePackageName[f.FileDescriptorProto] = pkg
+	}
+	return pkg
+}
+
+var isGoKeyword = map[string]bool{
+	"break":       true,
+	"case":        true,
+	"chan":        true,
+	"const":       true,
+	"continue":    true,
+	"default":     true,
+	"else":        true,
+	"defer":       true,
+	"fallthrough": true,
+	"for":         true,
+	"func":        true,
+	"go":          true,
+	"goto":        true,
+	"if":          true,
+	"import":      true,
+	"interface":   true,
+	"map":         true,
+	"package":     true,
+	"range":       true,
+	"return":      true,
+	"select":      true,
+	"struct":      true,
+	"switch":      true,
+	"type":        true,
+	"var":         true,
+}
+
+// defaultGoPackage returns the package name to use,
+// derived from the import path of the package we're building code for.
+func (g *Generator) defaultGoPackage() string {
+	p := g.PackageImportPath
+	if i := strings.LastIndex(p, "/"); i >= 0 {
+		p = p[i+1:]
+	}
+	if p == "" {
+		return ""
+	}
+
+	p = strings.Map(badToUnderscore, p)
+	// Identifier must not be keyword: insert _.
+	if isGoKeyword[p] {
+		p = "_" + p
+	}
+	// Identifier must not begin with digit: insert _.
+	if r, _ := utf8.DecodeRuneInString(p); unicode.IsDigit(r) {
+		p = "_" + p
+	}
+	return p
+}
+
+// SetPackageNames sets the package name for this run.
+// The package name must agree across all files being generated.
+// It also defines unique package names for all imported files.
+func (g *Generator) SetPackageNames() {
+	// Register the name for this package.  It will be the first name
+	// registered so is guaranteed to be unmodified.
+	pkg, explicit := g.genFiles[0].goPackageName()
+
+	// Check all files for an explicit go_package option.
+	for _, f := range g.genFiles {
+		thisPkg, thisExplicit := f.goPackageName()
+		if thisExplicit {
+			if !explicit {
+				// Let this file's go_package option serve for all input files.
+				pkg, explicit = thisPkg, true
+			} else if thisPkg != pkg {
+				g.Fail("inconsistent package names:", thisPkg, pkg)
+			}
+		}
+	}
+
+	// If we don't have an explicit go_package option but we have an
+	// import path, use that.
+	if !explicit {
+		p := g.defaultGoPackage()
+		if p != "" {
+			pkg, explicit = p, true
+		}
+	}
+
+	// If there was no go_package and no import path to use,
+	// double-check that all the inputs have the same implicit
+	// Go package name.
+	if !explicit {
+		for _, f := range g.genFiles {
+			thisPkg, _ := f.goPackageName()
+			if thisPkg != pkg {
+				g.Fail("inconsistent package names:", thisPkg, pkg)
+			}
+		}
+	}
+
+	g.packageName = RegisterUniquePackageName(pkg, g.genFiles[0])
+
+	// Register the support package names. They might collide with the
+	// name of a package we import.
+	g.Pkg = map[string]string{
+		"fmt":   RegisterUniquePackageName("fmt", nil),
+		"math":  RegisterUniquePackageName("math", nil),
+		"proto": RegisterUniquePackageName("proto", nil),
+	}
+
+AllFiles:
+	for _, f := range g.allFiles {
+		for _, genf := range g.genFiles {
+			if f == genf {
+				// In this package already.
+				uniquePackageName[f.FileDescriptorProto] = g.packageName
+				continue AllFiles
+			}
+		}
+		// The file is a dependency, so we want to ignore its go_package option
+		// because that is only relevant for its specific generated output.
+		pkg := f.GetPackage()
+		if pkg == "" {
+			pkg = baseName(*f.Name)
+		}
+		RegisterUniquePackageName(pkg, f)
+	}
+}
+
+// WrapTypes walks the incoming data, wrapping DescriptorProtos, EnumDescriptorProtos
+// and FileDescriptorProtos into file-referenced objects within the Generator.
+// It also creates the list of files to generate and so should be called before GenerateAllFiles.
+func (g *Generator) WrapTypes() {
+	g.allFiles = make([]*FileDescriptor, 0, len(g.Request.ProtoFile))
+	g.allFilesByName = make(map[string]*FileDescriptor, len(g.allFiles))
+	for _, f := range g.Request.ProtoFile {
+		// We must wrap the descriptors before we wrap the enums
+		descs := wrapDescriptors(f)
+		g.buildNestedDescriptors(descs)
+		enums := wrapEnumDescriptors(f, descs)
+		g.buildNestedEnums(descs, enums)
+		exts := wrapExtensions(f)
+		fd := &FileDescriptor{
+			FileDescriptorProto: f,
+			desc:                descs,
+			enum:                enums,
+			ext:                 exts,
+			exported:            make(map[Object][]symbol),
+			proto3:              fileIsProto3(f),
+		}
+		extractComments(fd)
+		g.allFiles = append(g.allFiles, fd)
+		g.allFilesByName[f.GetName()] = fd
+	}
+	for _, fd := range g.allFiles {
+		fd.imp = wrapImported(fd.FileDescriptorProto, g)
+	}
+
+	g.genFiles = make([]*FileDescriptor, 0, len(g.Request.FileToGenerate))
+	for _, fileName := range g.Request.FileToGenerate {
+		fd := g.allFilesByName[fileName]
+		if fd == nil {
+			g.Fail("could not find file named", fileName)
+		}
+		fd.index = len(g.genFiles)
+		g.genFiles = append(g.genFiles, fd)
+	}
+}
+
+// Scan the descriptors in this file.  For each one, build the slice of nested descriptors
+func (g *Generator) buildNestedDescriptors(descs []*Descriptor) {
+	for _, desc := range descs {
+		if len(desc.NestedType) != 0 {
+			for _, nest := range descs {
+				if nest.parent == desc {
+					desc.nested = append(desc.nested, nest)
+				}
+			}
+			if len(desc.nested) != len(desc.NestedType) {
+				g.Fail("internal error: nesting failure for", desc.GetName())
+			}
+		}
+	}
+}
+
+func (g *Generator) buildNestedEnums(descs []*Descriptor, enums []*EnumDescriptor) {
+	for _, desc := range descs {
+		if len(desc.EnumType) != 0 {
+			for _, enum := range enums {
+				if enum.parent == desc {
+					desc.enums = append(desc.enums, enum)
+				}
+			}
+			if len(desc.enums) != len(desc.EnumType) {
+				g.Fail("internal error: enum nesting failure for", desc.GetName())
+			}
+		}
+	}
+}
+
+// Construct the Descriptor
+func newDescriptor(desc *descriptor.DescriptorProto, parent *Descriptor, file *descriptor.FileDescriptorProto, index int) *Descriptor {
+	d := &Descriptor{
+		common:          common{file},
+		DescriptorProto: desc,
+		parent:          parent,
+		index:           index,
+	}
+	if parent == nil {
+		d.path = fmt.Sprintf("%d,%d", messagePath, index)
+	} else {
+		d.path = fmt.Sprintf("%s,%d,%d", parent.path, messageMessagePath, index)
+	}
+
+	// The only way to distinguish a group from a message is whether
+	// the containing message has a TYPE_GROUP field that matches.
+	if parent != nil {
+		parts := d.TypeName()
+		if file.Package != nil {
+			parts = append([]string{*file.Package}, parts...)
+		}
+		exp := "." + strings.Join(parts, ".")
+		for _, field := range parent.Field {
+			if field.GetType() == descriptor.FieldDescriptorProto_TYPE_GROUP && field.GetTypeName() == exp {
+				d.group = true
+				break
+			}
+		}
+	}
+
+	for _, field := range desc.Extension {
+		d.ext = append(d.ext, &ExtensionDescriptor{common{file}, field, d})
+	}
+
+	return d
+}
+
+// Return a slice of all the Descriptors defined within this file
+func wrapDescriptors(file *descriptor.FileDescriptorProto) []*Descriptor {
+	sl := make([]*Descriptor, 0, len(file.MessageType)+10)
+	for i, desc := range file.MessageType {
+		sl = wrapThisDescriptor(sl, desc, nil, file, i)
+	}
+	return sl
+}
+
+// Wrap this Descriptor, recursively
+func wrapThisDescriptor(sl []*Descriptor, desc *descriptor.DescriptorProto, parent *Descriptor, file *descriptor.FileDescriptorProto, index int) []*Descriptor {
+	sl = append(sl, newDescriptor(desc, parent, file, index))
+	me := sl[len(sl)-1]
+	for i, nested := range desc.NestedType {
+		sl = wrapThisDescriptor(sl, nested, me, file, i)
+	}
+	return sl
+}
+
+// Construct the EnumDescriptor
+func newEnumDescriptor(desc *descriptor.EnumDescriptorProto, parent *Descriptor, file *descriptor.FileDescriptorProto, index int) *EnumDescriptor {
+	ed := &EnumDescriptor{
+		common:              common{file},
+		EnumDescriptorProto: desc,
+		parent:              parent,
+		index:               index,
+	}
+	if parent == nil {
+		ed.path = fmt.Sprintf("%d,%d", enumPath, index)
+	} else {
+		ed.path = fmt.Sprintf("%s,%d,%d", parent.path, messageEnumPath, index)
+	}
+	return ed
+}
+
+// Return a slice of all the EnumDescriptors defined within this file
+func wrapEnumDescriptors(file *descriptor.FileDescriptorProto, descs []*Descriptor) []*EnumDescriptor {
+	sl := make([]*EnumDescriptor, 0, len(file.EnumType)+10)
+	// Top-level enums.
+	for i, enum := range file.EnumType {
+		sl = append(sl, newEnumDescriptor(enum, nil, file, i))
+	}
+	// Enums within messages. Enums within embedded messages appear in the outer-most message.
+	for _, nested := range descs {
+		for i, enum := range nested.EnumType {
+			sl = append(sl, newEnumDescriptor(enum, nested, file, i))
+		}
+	}
+	return sl
+}
+
+// Return a slice of all the top-level ExtensionDescriptors defined within this file.
+func wrapExtensions(file *descriptor.FileDescriptorProto) []*ExtensionDescriptor {
+	var sl []*ExtensionDescriptor
+	for _, field := range file.Extension {
+		sl = append(sl, &ExtensionDescriptor{common{file}, field, nil})
+	}
+	return sl
+}
+
+// Return a slice of all the types that are publicly imported into this file.
+func wrapImported(file *descriptor.FileDescriptorProto, g *Generator) (sl []*ImportedDescriptor) {
+	for _, index := range file.PublicDependency {
+		df := g.fileByName(file.Dependency[index])
+		for _, d := range df.desc {
+			if d.GetOptions().GetMapEntry() {
+				continue
+			}
+			sl = append(sl, &ImportedDescriptor{common{file}, d})
+		}
+		for _, e := range df.enum {
+			sl = append(sl, &ImportedDescriptor{common{file}, e})
+		}
+		for _, ext := range df.ext {
+			sl = append(sl, &ImportedDescriptor{common{file}, ext})
+		}
+	}
+	return
+}
+
+func extractComments(file *FileDescriptor) {
+	file.comments = make(map[string]*descriptor.SourceCodeInfo_Location)
+	for _, loc := range file.GetSourceCodeInfo().GetLocation() {
+		if loc.LeadingComments == nil {
+			continue
+		}
+		var p []string
+		for _, n := range loc.Path {
+			p = append(p, strconv.Itoa(int(n)))
+		}
+		file.comments[strings.Join(p, ",")] = loc
+	}
+}
+
+// BuildTypeNameMap builds the map from fully qualified type names to objects.
+// The key names for the map come from the input data, which puts a period at the beginning.
+// It should be called after SetPackageNames and before GenerateAllFiles.
+func (g *Generator) BuildTypeNameMap() {
+	g.typeNameToObject = make(map[string]Object)
+	for _, f := range g.allFiles {
+		// The names in this loop are defined by the proto world, not us, so the
+		// package name may be empty.  If so, the dotted package name of X will
+		// be ".X"; otherwise it will be ".pkg.X".
+		dottedPkg := "." + f.GetPackage()
+		if dottedPkg != "." {
+			dottedPkg += "."
+		}
+		for _, enum := range f.enum {
+			name := dottedPkg + dottedSlice(enum.TypeName())
+			g.typeNameToObject[name] = enum
+		}
+		for _, desc := range f.desc {
+			name := dottedPkg + dottedSlice(desc.TypeName())
+			g.typeNameToObject[name] = desc
+		}
+	}
+}
+
+// ObjectNamed, given a fully-qualified input type name as it appears in the input data,
+// returns the descriptor for the message or enum with that name.
+func (g *Generator) ObjectNamed(typeName string) Object {
+	o, ok := g.typeNameToObject[typeName]
+	if !ok {
+		g.Fail("can't find object with type", typeName)
+	}
+
+	// If the file of this object isn't a direct dependency of the current file,
+	// or in the current file, then this object has been publicly imported into
+	// a dependency of the current file.
+	// We should return the ImportedDescriptor object for it instead.
+	direct := *o.File().Name == *g.file.Name
+	if !direct {
+		for _, dep := range g.file.Dependency {
+			if *g.fileByName(dep).Name == *o.File().Name {
+				direct = true
+				break
+			}
+		}
+	}
+	if !direct {
+		found := false
+	Loop:
+		for _, dep := range g.file.Dependency {
+			df := g.fileByName(*g.fileByName(dep).Name)
+			for _, td := range df.imp {
+				if td.o == o {
+					// Found it!
+					o = td
+					found = true
+					break Loop
+				}
+			}
+		}
+		if !found {
+			log.Printf("protoc-gen-go: WARNING: failed finding publicly imported dependency for %v, used in %v", typeName, *g.file.Name)
+		}
+	}
+
+	return o
+}
+
+// P prints the arguments to the generated output.  It handles strings and int32s, plus
+// handling indirections because they may be *string, etc.
+func (g *Generator) P(str ...interface{}) {
+	if !g.writeOutput {
+		return
+	}
+	g.WriteString(g.indent)
+	for _, v := range str {
+		switch s := v.(type) {
+		case string:
+			g.WriteString(s)
+		case *string:
+			g.WriteString(*s)
+		case bool:
+			fmt.Fprintf(g, "%t", s)
+		case *bool:
+			fmt.Fprintf(g, "%t", *s)
+		case int:
+			fmt.Fprintf(g, "%d", s)
+		case *int32:
+			fmt.Fprintf(g, "%d", *s)
+		case *int64:
+			fmt.Fprintf(g, "%d", *s)
+		case float64:
+			fmt.Fprintf(g, "%g", s)
+		case *float64:
+			fmt.Fprintf(g, "%g", *s)
+		default:
+			g.Fail(fmt.Sprintf("unknown type in printer: %T", v))
+		}
+	}
+	g.WriteByte('\n')
+}
+
+// addInitf stores the given statement to be printed inside the file's init function.
+// The statement is given as a format specifier and arguments.
+func (g *Generator) addInitf(stmt string, a ...interface{}) {
+	g.init = append(g.init, fmt.Sprintf(stmt, a...))
+}
+
+// In Indents the output one tab stop.
+func (g *Generator) In() { g.indent += "\t" }
+
+// Out unindents the output one tab stop.
+func (g *Generator) Out() {
+	if len(g.indent) > 0 {
+		g.indent = g.indent[1:]
+	}
+}
+
+// GenerateAllFiles generates the output for all the files we're outputting.
+func (g *Generator) GenerateAllFiles() {
+	// Initialize the plugins
+	for _, p := range plugins {
+		p.Init(g)
+	}
+	// Generate the output. The generator runs for every file, even the files
+	// that we don't generate output for, so that we can collate the full list
+	// of exported symbols to support public imports.
+	genFileMap := make(map[*FileDescriptor]bool, len(g.genFiles))
+	for _, file := range g.genFiles {
+		genFileMap[file] = true
+	}
+	for _, file := range g.allFiles {
+		g.Reset()
+		g.writeOutput = genFileMap[file]
+		g.generate(file)
+		if !g.writeOutput {
+			continue
+		}
+		g.Response.File = append(g.Response.File, &plugin.CodeGeneratorResponse_File{
+			Name:    proto.String(file.goFileName()),
+			Content: proto.String(g.String()),
+		})
+	}
+}
+
+// Run all the plugins associated with the file.
+func (g *Generator) runPlugins(file *FileDescriptor) {
+	for _, p := range plugins {
+		p.Generate(file)
+	}
+}
+
+// FileOf return the FileDescriptor for this FileDescriptorProto.
+func (g *Generator) FileOf(fd *descriptor.FileDescriptorProto) *FileDescriptor {
+	for _, file := range g.allFiles {
+		if file.FileDescriptorProto == fd {
+			return file
+		}
+	}
+	g.Fail("could not find file in table:", fd.GetName())
+	return nil
+}
+
+// Fill the response protocol buffer with the generated output for all the files we're
+// supposed to generate.
+func (g *Generator) generate(file *FileDescriptor) {
+	g.file = g.FileOf(file.FileDescriptorProto)
+	g.usedPackages = make(map[string]bool)
+
+	if g.file.index == 0 {
+		// For one file in the package, assert version compatibility.
+		g.P("// This is a compile-time assertion to ensure that this generated file")
+		g.P("// is compatible with the proto package it is being compiled against.")
+		g.P("// A compilation error at this line likely means your copy of the")
+		g.P("// proto package needs to be updated.")
+		g.P("const _ = ", g.Pkg["proto"], ".ProtoPackageIsVersion", generatedCodeVersion, " // please upgrade the proto package")
+		g.P()
+	}
+	for _, td := range g.file.imp {
+		g.generateImported(td)
+	}
+	for _, enum := range g.file.enum {
+		g.generateEnum(enum)
+	}
+	for _, desc := range g.file.desc {
+		// Don't generate virtual messages for maps.
+		if desc.GetOptions().GetMapEntry() {
+			continue
+		}
+		g.generateMessage(desc)
+	}
+	for _, ext := range g.file.ext {
+		g.generateExtension(ext)
+	}
+	g.generateInitFunction()
+
+	// Run the plugins before the imports so we know which imports are necessary.
+	g.runPlugins(file)
+
+	g.generateFileDescriptor(file)
+
+	// Generate header and imports last, though they appear first in the output.
+	rem := g.Buffer
+	g.Buffer = new(bytes.Buffer)
+	g.generateHeader()
+	g.generateImports()
+	if !g.writeOutput {
+		return
+	}
+	g.Write(rem.Bytes())
+
+	// Reformat generated code.
+	fset := token.NewFileSet()
+	raw := g.Bytes()
+	ast, err := parser.ParseFile(fset, "", g, parser.ParseComments)
+	if err != nil {
+		// Print out the bad code with line numbers.
+		// This should never happen in practice, but it can while changing generated code,
+		// so consider this a debugging aid.
+		var src bytes.Buffer
+		s := bufio.NewScanner(bytes.NewReader(raw))
+		for line := 1; s.Scan(); line++ {
+			fmt.Fprintf(&src, "%5d\t%s\n", line, s.Bytes())
+		}
+		g.Fail("bad Go source code was generated:", err.Error(), "\n"+src.String())
+	}
+	g.Reset()
+	err = (&printer.Config{Mode: printer.TabIndent | printer.UseSpaces, Tabwidth: 8}).Fprint(g, fset, ast)
+	if err != nil {
+		g.Fail("generated Go source code could not be reformatted:", err.Error())
+	}
+}
+
+// Generate the header, including package definition
+func (g *Generator) generateHeader() {
+	g.P("// Code generated by protoc-gen-go.")
+	g.P("// source: ", g.file.Name)
+	g.P("// DO NOT EDIT!")
+	g.P()
+
+	name := g.file.PackageName()
+
+	if g.file.index == 0 {
+		// Generate package docs for the first file in the package.
+		g.P("/*")
+		g.P("Package ", name, " is a generated protocol buffer package.")
+		g.P()
+		if loc, ok := g.file.comments[strconv.Itoa(packagePath)]; ok {
+			// not using g.PrintComments because this is a /* */ comment block.
+			text := strings.TrimSuffix(loc.GetLeadingComments(), "\n")
+			for _, line := range strings.Split(text, "\n") {
+				line = strings.TrimPrefix(line, " ")
+				// ensure we don't escape from the block comment
+				line = strings.Replace(line, "*/", "* /", -1)
+				g.P(line)
+			}
+			g.P()
+		}
+		var topMsgs []string
+		g.P("It is generated from these files:")
+		for _, f := range g.genFiles {
+			g.P("\t", f.Name)
+			for _, msg := range f.desc {
+				if msg.parent != nil {
+					continue
+				}
+				topMsgs = append(topMsgs, CamelCaseSlice(msg.TypeName()))
+			}
+		}
+		g.P()
+		g.P("It has these top-level messages:")
+		for _, msg := range topMsgs {
+			g.P("\t", msg)
+		}
+		g.P("*/")
+	}
+
+	g.P("package ", name)
+	g.P()
+}
+
+// PrintComments prints any comments from the source .proto file.
+// The path is a comma-separated list of integers.
+// It returns an indication of whether any comments were printed.
+// See descriptor.proto for its format.
+func (g *Generator) PrintComments(path string) bool {
+	if !g.writeOutput {
+		return false
+	}
+	if loc, ok := g.file.comments[path]; ok {
+		text := strings.TrimSuffix(loc.GetLeadingComments(), "\n")
+		for _, line := range strings.Split(text, "\n") {
+			g.P("// ", strings.TrimPrefix(line, " "))
+		}
+		return true
+	}
+	return false
+}
+
+func (g *Generator) fileByName(filename string) *FileDescriptor {
+	return g.allFilesByName[filename]
+}
+
+// weak returns whether the ith import of the current file is a weak import.
+func (g *Generator) weak(i int32) bool {
+	for _, j := range g.file.WeakDependency {
+		if j == i {
+			return true
+		}
+	}
+	return false
+}
+
+// Generate the imports
+func (g *Generator) generateImports() {
+	// We almost always need a proto import.  Rather than computing when we
+	// do, which is tricky when there's a plugin, just import it and
+	// reference it later. The same argument applies to the fmt and math packages.
+	g.P("import " + g.Pkg["proto"] + " " + strconv.Quote(g.ImportPrefix+"github.com/golang/protobuf/proto"))
+	g.P("import " + g.Pkg["fmt"] + ` "fmt"`)
+	g.P("import " + g.Pkg["math"] + ` "math"`)
+	for i, s := range g.file.Dependency {
+		fd := g.fileByName(s)
+		// Do not import our own package.
+		if fd.PackageName() == g.packageName {
+			continue
+		}
+		filename := fd.goFileName()
+		// By default, import path is the dirname of the Go filename.
+		importPath := path.Dir(filename)
+		if substitution, ok := g.ImportMap[s]; ok {
+			importPath = substitution
+		}
+		importPath = g.ImportPrefix + importPath
+		// Skip weak imports.
+		if g.weak(int32(i)) {
+			g.P("// skipping weak import ", fd.PackageName(), " ", strconv.Quote(importPath))
+			continue
+		}
+		// We need to import all the dependencies, even if we don't reference them,
+		// because other code and tools depend on having the full transitive closure
+		// of protocol buffer types in the binary.
+		pname := fd.PackageName()
+		if _, ok := g.usedPackages[pname]; !ok {
+			pname = "_"
+		}
+		g.P("import ", pname, " ", strconv.Quote(importPath))
+	}
+	g.P()
+	// TODO: may need to worry about uniqueness across plugins
+	for _, p := range plugins {
+		p.GenerateImports(g.file)
+		g.P()
+	}
+	g.P("// Reference imports to suppress errors if they are not otherwise used.")
+	g.P("var _ = ", g.Pkg["proto"], ".Marshal")
+	g.P("var _ = ", g.Pkg["fmt"], ".Errorf")
+	g.P("var _ = ", g.Pkg["math"], ".Inf")
+	g.P()
+}
+
+func (g *Generator) generateImported(id *ImportedDescriptor) {
+	// Don't generate public import symbols for files that we are generating
+	// code for, since those symbols will already be in this package.
+	// We can't simply avoid creating the ImportedDescriptor objects,
+	// because g.genFiles isn't populated at that stage.
+	tn := id.TypeName()
+	sn := tn[len(tn)-1]
+	df := g.FileOf(id.o.File())
+	filename := *df.Name
+	for _, fd := range g.genFiles {
+		if *fd.Name == filename {
+			g.P("// Ignoring public import of ", sn, " from ", filename)
+			g.P()
+			return
+		}
+	}
+	g.P("// ", sn, " from public import ", filename)
+	g.usedPackages[df.PackageName()] = true
+
+	for _, sym := range df.exported[id.o] {
+		sym.GenerateAlias(g, df.PackageName())
+	}
+
+	g.P()
+}
+
+// Generate the enum definitions for this EnumDescriptor.
+func (g *Generator) generateEnum(enum *EnumDescriptor) {
+	// The full type name
+	typeName := enum.TypeName()
+	// The full type name, CamelCased.
+	ccTypeName := CamelCaseSlice(typeName)
+	ccPrefix := enum.prefix()
+
+	g.PrintComments(enum.path)
+	g.P("type ", ccTypeName, " int32")
+	g.file.addExport(enum, enumSymbol{ccTypeName, enum.proto3()})
+	g.P("const (")
+	g.In()
+	for i, e := range enum.Value {
+		g.PrintComments(fmt.Sprintf("%s,%d,%d", enum.path, enumValuePath, i))
+
+		name := ccPrefix + *e.Name
+		g.P(name, " ", ccTypeName, " = ", e.Number)
+		g.file.addExport(enum, constOrVarSymbol{name, "const", ccTypeName})
+	}
+	g.Out()
+	g.P(")")
+	g.P("var ", ccTypeName, "_name = map[int32]string{")
+	g.In()
+	generated := make(map[int32]bool) // avoid duplicate values
+	for _, e := range enum.Value {
+		duplicate := ""
+		if _, present := generated[*e.Number]; present {
+			duplicate = "// Duplicate value: "
+		}
+		g.P(duplicate, e.Number, ": ", strconv.Quote(*e.Name), ",")
+		generated[*e.Number] = true
+	}
+	g.Out()
+	g.P("}")
+	g.P("var ", ccTypeName, "_value = map[string]int32{")
+	g.In()
+	for _, e := range enum.Value {
+		g.P(strconv.Quote(*e.Name), ": ", e.Number, ",")
+	}
+	g.Out()
+	g.P("}")
+
+	if !enum.proto3() {
+		g.P("func (x ", ccTypeName, ") Enum() *", ccTypeName, " {")
+		g.In()
+		g.P("p := new(", ccTypeName, ")")
+		g.P("*p = x")
+		g.P("return p")
+		g.Out()
+		g.P("}")
+	}
+
+	g.P("func (x ", ccTypeName, ") String() string {")
+	g.In()
+	g.P("return ", g.Pkg["proto"], ".EnumName(", ccTypeName, "_name, int32(x))")
+	g.Out()
+	g.P("}")
+
+	if !enum.proto3() {
+		g.P("func (x *", ccTypeName, ") UnmarshalJSON(data []byte) error {")
+		g.In()
+		g.P("value, err := ", g.Pkg["proto"], ".UnmarshalJSONEnum(", ccTypeName, `_value, data, "`, ccTypeName, `")`)
+		g.P("if err != nil {")
+		g.In()
+		g.P("return err")
+		g.Out()
+		g.P("}")
+		g.P("*x = ", ccTypeName, "(value)")
+		g.P("return nil")
+		g.Out()
+		g.P("}")
+	}
+
+	var indexes []string
+	for m := enum.parent; m != nil; m = m.parent {
+		// XXX: skip groups?
+		indexes = append([]string{strconv.Itoa(m.index)}, indexes...)
+	}
+	indexes = append(indexes, strconv.Itoa(enum.index))
+	g.P("func (", ccTypeName, ") EnumDescriptor() ([]byte, []int) { return ", g.file.VarName(), ", []int{", strings.Join(indexes, ", "), "} }")
+	if enum.file.GetPackage() == "google.protobuf" && enum.GetName() == "NullValue" {
+		g.P("func (", ccTypeName, `) XXX_WellKnownType() string { return "`, enum.GetName(), `" }`)
+	}
+
+	g.P()
+}
+
+// The tag is a string like "varint,2,opt,name=fieldname,def=7" that
+// identifies details of the field for the protocol buffer marshaling and unmarshaling
+// code.  The fields are:
+//	wire encoding
+//	protocol tag number
+//	opt,req,rep for optional, required, or repeated
+//	packed whether the encoding is "packed" (optional; repeated primitives only)
+//	name= the original declared name
+//	enum= the name of the enum type if it is an enum-typed field.
+//	proto3 if this field is in a proto3 message
+//	def= string representation of the default value, if any.
+// The default value must be in a representation that can be used at run-time
+// to generate the default value. Thus bools become 0 and 1, for instance.
+func (g *Generator) goTag(message *Descriptor, field *descriptor.FieldDescriptorProto, wiretype string) string {
+	optrepreq := ""
+	switch {
+	case isOptional(field):
+		optrepreq = "opt"
+	case isRequired(field):
+		optrepreq = "req"
+	case isRepeated(field):
+		optrepreq = "rep"
+	}
+	var defaultValue string
+	if dv := field.DefaultValue; dv != nil { // set means an explicit default
+		defaultValue = *dv
+		// Some types need tweaking.
+		switch *field.Type {
+		case descriptor.FieldDescriptorProto_TYPE_BOOL:
+			if defaultValue == "true" {
+				defaultValue = "1"
+			} else {
+				defaultValue = "0"
+			}
+		case descriptor.FieldDescriptorProto_TYPE_STRING,
+			descriptor.FieldDescriptorProto_TYPE_BYTES:
+			// Nothing to do. Quoting is done for the whole tag.
+		case descriptor.FieldDescriptorProto_TYPE_ENUM:
+			// For enums we need to provide the integer constant.
+			obj := g.ObjectNamed(field.GetTypeName())
+			if id, ok := obj.(*ImportedDescriptor); ok {
+				// It is an enum that was publicly imported.
+				// We need the underlying type.
+				obj = id.o
+			}
+			enum, ok := obj.(*EnumDescriptor)
+			if !ok {
+				log.Printf("obj is a %T", obj)
+				if id, ok := obj.(*ImportedDescriptor); ok {
+					log.Printf("id.o is a %T", id.o)
+				}
+				g.Fail("unknown enum type", CamelCaseSlice(obj.TypeName()))
+			}
+			defaultValue = enum.integerValueAsString(defaultValue)
+		}
+		defaultValue = ",def=" + defaultValue
+	}
+	enum := ""
+	if *field.Type == descriptor.FieldDescriptorProto_TYPE_ENUM {
+		// We avoid using obj.PackageName(), because we want to use the
+		// original (proto-world) package name.
+		obj := g.ObjectNamed(field.GetTypeName())
+		if id, ok := obj.(*ImportedDescriptor); ok {
+			obj = id.o
+		}
+		enum = ",enum="
+		if pkg := obj.File().GetPackage(); pkg != "" {
+			enum += pkg + "."
+		}
+		enum += CamelCaseSlice(obj.TypeName())
+	}
+	packed := ""
+	if (field.Options != nil && field.Options.GetPacked()) ||
+		// Per https://developers.google.com/protocol-buffers/docs/proto3#simple:
+		// "In proto3, repeated fields of scalar numeric types use packed encoding by default."
+		(message.proto3() && (field.Options == nil || field.Options.Packed == nil) &&
+			isRepeated(field) && isScalar(field)) {
+		packed = ",packed"
+	}
+	fieldName := field.GetName()
+	name := fieldName
+	if *field.Type == descriptor.FieldDescriptorProto_TYPE_GROUP {
+		// We must use the type name for groups instead of
+		// the field name to preserve capitalization.
+		// type_name in FieldDescriptorProto is fully-qualified,
+		// but we only want the local part.
+		name = *field.TypeName
+		if i := strings.LastIndex(name, "."); i >= 0 {
+			name = name[i+1:]
+		}
+	}
+	if json := field.GetJsonName(); json != "" && json != name {
+		// TODO: escaping might be needed, in which case
+		// perhaps this should be in its own "json" tag.
+		name += ",json=" + json
+	}
+	name = ",name=" + name
+	if message.proto3() {
+		// We only need the extra tag for []byte fields;
+		// no need to add noise for the others.
+		if *field.Type == descriptor.FieldDescriptorProto_TYPE_BYTES {
+			name += ",proto3"
+		}
+
+	}
+	oneof := ""
+	if field.OneofIndex != nil {
+		oneof = ",oneof"
+	}
+	return strconv.Quote(fmt.Sprintf("%s,%d,%s%s%s%s%s%s",
+		wiretype,
+		field.GetNumber(),
+		optrepreq,
+		packed,
+		name,
+		enum,
+		oneof,
+		defaultValue))
+}
+
+func needsStar(typ descriptor.FieldDescriptorProto_Type) bool {
+	switch typ {
+	case descriptor.FieldDescriptorProto_TYPE_GROUP:
+		return false
+	case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+		return false
+	case descriptor.FieldDescriptorProto_TYPE_BYTES:
+		return false
+	}
+	return true
+}
+
+// TypeName is the printed name appropriate for an item. If the object is in the current file,
+// TypeName drops the package name and underscores the rest.
+// Otherwise the object is from another package; and the result is the underscored
+// package name followed by the item name.
+// The result always has an initial capital.
+func (g *Generator) TypeName(obj Object) string {
+	return g.DefaultPackageName(obj) + CamelCaseSlice(obj.TypeName())
+}
+
+// TypeNameWithPackage is like TypeName, but always includes the package
+// name even if the object is in our own package.
+func (g *Generator) TypeNameWithPackage(obj Object) string {
+	return obj.PackageName() + CamelCaseSlice(obj.TypeName())
+}
+
+// GoType returns a string representing the type name, and the wire type
+func (g *Generator) GoType(message *Descriptor, field *descriptor.FieldDescriptorProto) (typ string, wire string) {
+	// TODO: Options.
+	switch *field.Type {
+	case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
+		typ, wire = "float64", "fixed64"
+	case descriptor.FieldDescriptorProto_TYPE_FLOAT:
+		typ, wire = "float32", "fixed32"
+	case descriptor.FieldDescriptorProto_TYPE_INT64:
+		typ, wire = "int64", "varint"
+	case descriptor.FieldDescriptorProto_TYPE_UINT64:
+		typ, wire = "uint64", "varint"
+	case descriptor.FieldDescriptorProto_TYPE_INT32:
+		typ, wire = "int32", "varint"
+	case descriptor.FieldDescriptorProto_TYPE_UINT32:
+		typ, wire = "uint32", "varint"
+	case descriptor.FieldDescriptorProto_TYPE_FIXED64:
+		typ, wire = "uint64", "fixed64"
+	case descriptor.FieldDescriptorProto_TYPE_FIXED32:
+		typ, wire = "uint32", "fixed32"
+	case descriptor.FieldDescriptorProto_TYPE_BOOL:
+		typ, wire = "bool", "varint"
+	case descriptor.FieldDescriptorProto_TYPE_STRING:
+		typ, wire = "string", "bytes"
+	case descriptor.FieldDescriptorProto_TYPE_GROUP:
+		desc := g.ObjectNamed(field.GetTypeName())
+		typ, wire = "*"+g.TypeName(desc), "group"
+	case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+		desc := g.ObjectNamed(field.GetTypeName())
+		typ, wire = "*"+g.TypeName(desc), "bytes"
+	case descriptor.FieldDescriptorProto_TYPE_BYTES:
+		typ, wire = "[]byte", "bytes"
+	case descriptor.FieldDescriptorProto_TYPE_ENUM:
+		desc := g.ObjectNamed(field.GetTypeName())
+		typ, wire = g.TypeName(desc), "varint"
+	case descriptor.FieldDescriptorProto_TYPE_SFIXED32:
+		typ, wire = "int32", "fixed32"
+	case descriptor.FieldDescriptorProto_TYPE_SFIXED64:
+		typ, wire = "int64", "fixed64"
+	case descriptor.FieldDescriptorProto_TYPE_SINT32:
+		typ, wire = "int32", "zigzag32"
+	case descriptor.FieldDescriptorProto_TYPE_SINT64:
+		typ, wire = "int64", "zigzag64"
+	default:
+		g.Fail("unknown type for", field.GetName())
+	}
+	if isRepeated(field) {
+		typ = "[]" + typ
+	} else if message != nil && message.proto3() {
+		return
+	} else if field.OneofIndex != nil && message != nil {
+		return
+	} else if needsStar(*field.Type) {
+		typ = "*" + typ
+	}
+	return
+}
+
+func (g *Generator) RecordTypeUse(t string) {
+	if obj, ok := g.typeNameToObject[t]; ok {
+		// Call ObjectNamed to get the true object to record the use.
+		obj = g.ObjectNamed(t)
+		g.usedPackages[obj.PackageName()] = true
+	}
+}
+
+// Method names that may be generated.  Fields with these names get an
+// underscore appended. Any change to this set is a potential incompatible
+// API change because it changes generated field names.
+var methodNames = [...]string{
+	"Reset",
+	"String",
+	"ProtoMessage",
+	"Marshal",
+	"Unmarshal",
+	"ExtensionRangeArray",
+	"ExtensionMap",
+	"Descriptor",
+}
+
+// Names of messages in the `google.protobuf` package for which
+// we will generate XXX_WellKnownType methods.
+var wellKnownTypes = map[string]bool{
+	"Any":       true,
+	"Duration":  true,
+	"Empty":     true,
+	"Struct":    true,
+	"Timestamp": true,
+
+	"Value":       true,
+	"ListValue":   true,
+	"DoubleValue": true,
+	"FloatValue":  true,
+	"Int64Value":  true,
+	"UInt64Value": true,
+	"Int32Value":  true,
+	"UInt32Value": true,
+	"BoolValue":   true,
+	"StringValue": true,
+	"BytesValue":  true,
+}
+
+// Generate the type and default constant definitions for this Descriptor.
+func (g *Generator) generateMessage(message *Descriptor) {
+	// The full type name
+	typeName := message.TypeName()
+	// The full type name, CamelCased.
+	ccTypeName := CamelCaseSlice(typeName)
+
+	usedNames := make(map[string]bool)
+	for _, n := range methodNames {
+		usedNames[n] = true
+	}
+	fieldNames := make(map[*descriptor.FieldDescriptorProto]string)
+	fieldGetterNames := make(map[*descriptor.FieldDescriptorProto]string)
+	fieldTypes := make(map[*descriptor.FieldDescriptorProto]string)
+	mapFieldTypes := make(map[*descriptor.FieldDescriptorProto]string)
+
+	oneofFieldName := make(map[int32]string)                           // indexed by oneof_index field of FieldDescriptorProto
+	oneofDisc := make(map[int32]string)                                // name of discriminator method
+	oneofTypeName := make(map[*descriptor.FieldDescriptorProto]string) // without star
+	oneofInsertPoints := make(map[int32]int)                           // oneof_index => offset of g.Buffer
+
+	g.PrintComments(message.path)
+	g.P("type ", ccTypeName, " struct {")
+	g.In()
+
+	// allocNames finds a conflict-free variation of the given strings,
+	// consistently mutating their suffixes.
+	// It returns the same number of strings.
+	allocNames := func(ns ...string) []string {
+	Loop:
+		for {
+			for _, n := range ns {
+				if usedNames[n] {
+					for i := range ns {
+						ns[i] += "_"
+					}
+					continue Loop
+				}
+			}
+			for _, n := range ns {
+				usedNames[n] = true
+			}
+			return ns
+		}
+	}
+
+	for i, field := range message.Field {
+		// Allocate the getter and the field at the same time so name
+		// collisions create field/method consistent names.
+		// TODO: This allocation occurs based on the order of the fields
+		// in the proto file, meaning that a change in the field
+		// ordering can change generated Method/Field names.
+		base := CamelCase(*field.Name)
+		ns := allocNames(base, "Get"+base)
+		fieldName, fieldGetterName := ns[0], ns[1]
+		typename, wiretype := g.GoType(message, field)
+		jsonName := *field.Name
+		tag := fmt.Sprintf("protobuf:%s json:%q", g.goTag(message, field, wiretype), jsonName+",omitempty")
+
+		fieldNames[field] = fieldName
+		fieldGetterNames[field] = fieldGetterName
+
+		oneof := field.OneofIndex != nil
+		if oneof && oneofFieldName[*field.OneofIndex] == "" {
+			odp := message.OneofDecl[int(*field.OneofIndex)]
+			fname := allocNames(CamelCase(odp.GetName()))[0]
+
+			// This is the first field of a oneof we haven't seen before.
+			// Generate the union field.
+			com := g.PrintComments(fmt.Sprintf("%s,%d,%d", message.path, messageOneofPath, *field.OneofIndex))
+			if com {
+				g.P("//")
+			}
+			g.P("// Types that are valid to be assigned to ", fname, ":")
+			// Generate the rest of this comment later,
+			// when we've computed any disambiguation.
+			oneofInsertPoints[*field.OneofIndex] = g.Buffer.Len()
+
+			dname := "is" + ccTypeName + "_" + fname
+			oneofFieldName[*field.OneofIndex] = fname
+			oneofDisc[*field.OneofIndex] = dname
+			tag := `protobuf_oneof:"` + odp.GetName() + `"`
+			g.P(fname, " ", dname, " `", tag, "`")
+		}
+
+		if *field.Type == descriptor.FieldDescriptorProto_TYPE_MESSAGE {
+			desc := g.ObjectNamed(field.GetTypeName())
+			if d, ok := desc.(*Descriptor); ok && d.GetOptions().GetMapEntry() {
+				// Figure out the Go types and tags for the key and value types.
+				keyField, valField := d.Field[0], d.Field[1]
+				keyType, keyWire := g.GoType(d, keyField)
+				valType, valWire := g.GoType(d, valField)
+				keyTag, valTag := g.goTag(d, keyField, keyWire), g.goTag(d, valField, valWire)
+
+				// We don't use stars, except for message-typed values.
+				// Message and enum types are the only two possibly foreign types used in maps,
+				// so record their use. They are not permitted as map keys.
+				keyType = strings.TrimPrefix(keyType, "*")
+				switch *valField.Type {
+				case descriptor.FieldDescriptorProto_TYPE_ENUM:
+					valType = strings.TrimPrefix(valType, "*")
+					g.RecordTypeUse(valField.GetTypeName())
+				case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+					g.RecordTypeUse(valField.GetTypeName())
+				default:
+					valType = strings.TrimPrefix(valType, "*")
+				}
+
+				typename = fmt.Sprintf("map[%s]%s", keyType, valType)
+				mapFieldTypes[field] = typename // record for the getter generation
+
+				tag += fmt.Sprintf(" protobuf_key:%s protobuf_val:%s", keyTag, valTag)
+			}
+		}
+
+		fieldTypes[field] = typename
+
+		if oneof {
+			tname := ccTypeName + "_" + fieldName
+			// It is possible for this to collide with a message or enum
+			// nested in this message. Check for collisions.
+			for {
+				ok := true
+				for _, desc := range message.nested {
+					if CamelCaseSlice(desc.TypeName()) == tname {
+						ok = false
+						break
+					}
+				}
+				for _, enum := range message.enums {
+					if CamelCaseSlice(enum.TypeName()) == tname {
+						ok = false
+						break
+					}
+				}
+				if !ok {
+					tname += "_"
+					continue
+				}
+				break
+			}
+
+			oneofTypeName[field] = tname
+			continue
+		}
+
+		g.PrintComments(fmt.Sprintf("%s,%d,%d", message.path, messageFieldPath, i))
+		g.P(fieldName, "\t", typename, "\t`", tag, "`")
+		g.RecordTypeUse(field.GetTypeName())
+	}
+	if len(message.ExtensionRange) > 0 {
+		g.P(g.Pkg["proto"], ".XXX_InternalExtensions `json:\"-\"`")
+	}
+	if !message.proto3() {
+		g.P("XXX_unrecognized\t[]byte `json:\"-\"`")
+	}
+	g.Out()
+	g.P("}")
+
+	// Update g.Buffer to list valid oneof types.
+	// We do this down here, after we've disambiguated the oneof type names.
+	// We go in reverse order of insertion point to avoid invalidating offsets.
+	for oi := int32(len(message.OneofDecl)); oi >= 0; oi-- {
+		ip := oneofInsertPoints[oi]
+		all := g.Buffer.Bytes()
+		rem := all[ip:]
+		g.Buffer = bytes.NewBuffer(all[:ip:ip]) // set cap so we don't scribble on rem
+		for _, field := range message.Field {
+			if field.OneofIndex == nil || *field.OneofIndex != oi {
+				continue
+			}
+			g.P("//\t*", oneofTypeName[field])
+		}
+		g.Buffer.Write(rem)
+	}
+
+	// Reset, String and ProtoMessage methods.
+	g.P("func (m *", ccTypeName, ") Reset() { *m = ", ccTypeName, "{} }")
+	g.P("func (m *", ccTypeName, ") String() string { return ", g.Pkg["proto"], ".CompactTextString(m) }")
+	g.P("func (*", ccTypeName, ") ProtoMessage() {}")
+	var indexes []string
+	for m := message; m != nil; m = m.parent {
+		indexes = append([]string{strconv.Itoa(m.index)}, indexes...)
+	}
+	g.P("func (*", ccTypeName, ") Descriptor() ([]byte, []int) { return ", g.file.VarName(), ", []int{", strings.Join(indexes, ", "), "} }")
+	// TODO: Revisit the decision to use a XXX_WellKnownType method
+	// if we change proto.MessageName to work with multiple equivalents.
+	if message.file.GetPackage() == "google.protobuf" && wellKnownTypes[message.GetName()] {
+		g.P("func (*", ccTypeName, `) XXX_WellKnownType() string { return "`, message.GetName(), `" }`)
+	}
+
+	// Extension support methods
+	var hasExtensions, isMessageSet bool
+	if len(message.ExtensionRange) > 0 {
+		hasExtensions = true
+		// message_set_wire_format only makes sense when extensions are defined.
+		if opts := message.Options; opts != nil && opts.GetMessageSetWireFormat() {
+			isMessageSet = true
+			g.P()
+			g.P("func (m *", ccTypeName, ") Marshal() ([]byte, error) {")
+			g.In()
+			g.P("return ", g.Pkg["proto"], ".MarshalMessageSet(&m.XXX_InternalExtensions)")
+			g.Out()
+			g.P("}")
+			g.P("func (m *", ccTypeName, ") Unmarshal(buf []byte) error {")
+			g.In()
+			g.P("return ", g.Pkg["proto"], ".UnmarshalMessageSet(buf, &m.XXX_InternalExtensions)")
+			g.Out()
+			g.P("}")
+			g.P("func (m *", ccTypeName, ") MarshalJSON() ([]byte, error) {")
+			g.In()
+			g.P("return ", g.Pkg["proto"], ".MarshalMessageSetJSON(&m.XXX_InternalExtensions)")
+			g.Out()
+			g.P("}")
+			g.P("func (m *", ccTypeName, ") UnmarshalJSON(buf []byte) error {")
+			g.In()
+			g.P("return ", g.Pkg["proto"], ".UnmarshalMessageSetJSON(buf, &m.XXX_InternalExtensions)")
+			g.Out()
+			g.P("}")
+			g.P("// ensure ", ccTypeName, " satisfies proto.Marshaler and proto.Unmarshaler")
+			g.P("var _ ", g.Pkg["proto"], ".Marshaler = (*", ccTypeName, ")(nil)")
+			g.P("var _ ", g.Pkg["proto"], ".Unmarshaler = (*", ccTypeName, ")(nil)")
+		}
+
+		g.P()
+		g.P("var extRange_", ccTypeName, " = []", g.Pkg["proto"], ".ExtensionRange{")
+		g.In()
+		for _, r := range message.ExtensionRange {
+			end := fmt.Sprint(*r.End - 1) // make range inclusive on both ends
+			g.P("{", r.Start, ", ", end, "},")
+		}
+		g.Out()
+		g.P("}")
+		g.P("func (*", ccTypeName, ") ExtensionRangeArray() []", g.Pkg["proto"], ".ExtensionRange {")
+		g.In()
+		g.P("return extRange_", ccTypeName)
+		g.Out()
+		g.P("}")
+	}
+
+	// Default constants
+	defNames := make(map[*descriptor.FieldDescriptorProto]string)
+	for _, field := range message.Field {
+		def := field.GetDefaultValue()
+		if def == "" {
+			continue
+		}
+		fieldname := "Default_" + ccTypeName + "_" + CamelCase(*field.Name)
+		defNames[field] = fieldname
+		typename, _ := g.GoType(message, field)
+		if typename[0] == '*' {
+			typename = typename[1:]
+		}
+		kind := "const "
+		switch {
+		case typename == "bool":
+		case typename == "string":
+			def = strconv.Quote(def)
+		case typename == "[]byte":
+			def = "[]byte(" + strconv.Quote(def) + ")"
+			kind = "var "
+		case def == "inf", def == "-inf", def == "nan":
+			// These names are known to, and defined by, the protocol language.
+			switch def {
+			case "inf":
+				def = "math.Inf(1)"
+			case "-inf":
+				def = "math.Inf(-1)"
+			case "nan":
+				def = "math.NaN()"
+			}
+			if *field.Type == descriptor.FieldDescriptorProto_TYPE_FLOAT {
+				def = "float32(" + def + ")"
+			}
+			kind = "var "
+		case *field.Type == descriptor.FieldDescriptorProto_TYPE_ENUM:
+			// Must be an enum.  Need to construct the prefixed name.
+			obj := g.ObjectNamed(field.GetTypeName())
+			var enum *EnumDescriptor
+			if id, ok := obj.(*ImportedDescriptor); ok {
+				// The enum type has been publicly imported.
+				enum, _ = id.o.(*EnumDescriptor)
+			} else {
+				enum, _ = obj.(*EnumDescriptor)
+			}
+			if enum == nil {
+				log.Printf("don't know how to generate constant for %s", fieldname)
+				continue
+			}
+			def = g.DefaultPackageName(obj) + enum.prefix() + def
+		}
+		g.P(kind, fieldname, " ", typename, " = ", def)
+		g.file.addExport(message, constOrVarSymbol{fieldname, kind, ""})
+	}
+	g.P()
+
+	// Oneof per-field types, discriminants and getters.
+	//
+	// Generate unexported named types for the discriminant interfaces.
+	// We shouldn't have to do this, but there was (~19 Aug 2015) a compiler/linker bug
+	// that was triggered by using anonymous interfaces here.
+	// TODO: Revisit this and consider reverting back to anonymous interfaces.
+	for oi := range message.OneofDecl {
+		dname := oneofDisc[int32(oi)]
+		g.P("type ", dname, " interface { ", dname, "() }")
+	}
+	g.P()
+	for _, field := range message.Field {
+		if field.OneofIndex == nil {
+			continue
+		}
+		_, wiretype := g.GoType(message, field)
+		tag := "protobuf:" + g.goTag(message, field, wiretype)
+		g.P("type ", oneofTypeName[field], " struct{ ", fieldNames[field], " ", fieldTypes[field], " `", tag, "` }")
+		g.RecordTypeUse(field.GetTypeName())
+	}
+	g.P()
+	for _, field := range message.Field {
+		if field.OneofIndex == nil {
+			continue
+		}
+		g.P("func (*", oneofTypeName[field], ") ", oneofDisc[*field.OneofIndex], "() {}")
+	}
+	g.P()
+	for oi := range message.OneofDecl {
+		fname := oneofFieldName[int32(oi)]
+		g.P("func (m *", ccTypeName, ") Get", fname, "() ", oneofDisc[int32(oi)], " {")
+		g.P("if m != nil { return m.", fname, " }")
+		g.P("return nil")
+		g.P("}")
+	}
+	g.P()
+
+	// Field getters
+	var getters []getterSymbol
+	for _, field := range message.Field {
+		oneof := field.OneofIndex != nil
+
+		fname := fieldNames[field]
+		typename, _ := g.GoType(message, field)
+		if t, ok := mapFieldTypes[field]; ok {
+			typename = t
+		}
+		mname := fieldGetterNames[field]
+		star := ""
+		if needsStar(*field.Type) && typename[0] == '*' {
+			typename = typename[1:]
+			star = "*"
+		}
+
+		// Only export getter symbols for basic types,
+		// and for messages and enums in the same package.
+		// Groups are not exported.
+		// Foreign types can't be hoisted through a public import because
+		// the importer may not already be importing the defining .proto.
+		// As an example, imagine we have an import tree like this:
+		//   A.proto -> B.proto -> C.proto
+		// If A publicly imports B, we need to generate the getters from B in A's output,
+		// but if one such getter returns something from C then we cannot do that
+		// because A is not importing C already.
+		var getter, genType bool
+		switch *field.Type {
+		case descriptor.FieldDescriptorProto_TYPE_GROUP:
+			getter = false
+		case descriptor.FieldDescriptorProto_TYPE_MESSAGE, descriptor.FieldDescriptorProto_TYPE_ENUM:
+			// Only export getter if its return type is in this package.
+			getter = g.ObjectNamed(field.GetTypeName()).PackageName() == message.PackageName()
+			genType = true
+		default:
+			getter = true
+		}
+		if getter {
+			getters = append(getters, getterSymbol{
+				name:     mname,
+				typ:      typename,
+				typeName: field.GetTypeName(),
+				genType:  genType,
+			})
+		}
+
+		g.P("func (m *", ccTypeName, ") "+mname+"() "+typename+" {")
+		g.In()
+		def, hasDef := defNames[field]
+		typeDefaultIsNil := false // whether this field type's default value is a literal nil unless specified
+		switch *field.Type {
+		case descriptor.FieldDescriptorProto_TYPE_BYTES:
+			typeDefaultIsNil = !hasDef
+		case descriptor.FieldDescriptorProto_TYPE_GROUP, descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+			typeDefaultIsNil = true
+		}
+		if isRepeated(field) {
+			typeDefaultIsNil = true
+		}
+		if typeDefaultIsNil && !oneof {
+			// A bytes field with no explicit default needs less generated code,
+			// as does a message or group field, or a repeated field.
+			g.P("if m != nil {")
+			g.In()
+			g.P("return m." + fname)
+			g.Out()
+			g.P("}")
+			g.P("return nil")
+			g.Out()
+			g.P("}")
+			g.P()
+			continue
+		}
+		if !oneof {
+			if message.proto3() {
+				g.P("if m != nil {")
+			} else {
+				g.P("if m != nil && m." + fname + " != nil {")
+			}
+			g.In()
+			g.P("return " + star + "m." + fname)
+			g.Out()
+			g.P("}")
+		} else {
+			uname := oneofFieldName[*field.OneofIndex]
+			tname := oneofTypeName[field]
+			g.P("if x, ok := m.Get", uname, "().(*", tname, "); ok {")
+			g.P("return x.", fname)
+			g.P("}")
+		}
+		if hasDef {
+			if *field.Type != descriptor.FieldDescriptorProto_TYPE_BYTES {
+				g.P("return " + def)
+			} else {
+				// The default is a []byte var.
+				// Make a copy when returning it to be safe.
+				g.P("return append([]byte(nil), ", def, "...)")
+			}
+		} else {
+			switch *field.Type {
+			case descriptor.FieldDescriptorProto_TYPE_BOOL:
+				g.P("return false")
+			case descriptor.FieldDescriptorProto_TYPE_STRING:
+				g.P(`return ""`)
+			case descriptor.FieldDescriptorProto_TYPE_GROUP,
+				descriptor.FieldDescriptorProto_TYPE_MESSAGE,
+				descriptor.FieldDescriptorProto_TYPE_BYTES:
+				// This is only possible for oneof fields.
+				g.P("return nil")
+			case descriptor.FieldDescriptorProto_TYPE_ENUM:
+				// The default default for an enum is the first value in the enum,
+				// not zero.
+				obj := g.ObjectNamed(field.GetTypeName())
+				var enum *EnumDescriptor
+				if id, ok := obj.(*ImportedDescriptor); ok {
+					// The enum type has been publicly imported.
+					enum, _ = id.o.(*EnumDescriptor)
+				} else {
+					enum, _ = obj.(*EnumDescriptor)
+				}
+				if enum == nil {
+					log.Printf("don't know how to generate getter for %s", field.GetName())
+					continue
+				}
+				if len(enum.Value) == 0 {
+					g.P("return 0 // empty enum")
+				} else {
+					first := enum.Value[0].GetName()
+					g.P("return ", g.DefaultPackageName(obj)+enum.prefix()+first)
+				}
+			default:
+				g.P("return 0")
+			}
+		}
+		g.Out()
+		g.P("}")
+		g.P()
+	}
+
+	if !message.group {
+		ms := &messageSymbol{
+			sym:           ccTypeName,
+			hasExtensions: hasExtensions,
+			isMessageSet:  isMessageSet,
+			hasOneof:      len(message.OneofDecl) > 0,
+			getters:       getters,
+		}
+		g.file.addExport(message, ms)
+	}
+
+	// Oneof functions
+	if len(message.OneofDecl) > 0 {
+		fieldWire := make(map[*descriptor.FieldDescriptorProto]string)
+
+		// method
+		enc := "_" + ccTypeName + "_OneofMarshaler"
+		dec := "_" + ccTypeName + "_OneofUnmarshaler"
+		size := "_" + ccTypeName + "_OneofSizer"
+		encSig := "(msg " + g.Pkg["proto"] + ".Message, b *" + g.Pkg["proto"] + ".Buffer) error"
+		decSig := "(msg " + g.Pkg["proto"] + ".Message, tag, wire int, b *" + g.Pkg["proto"] + ".Buffer) (bool, error)"
+		sizeSig := "(msg " + g.Pkg["proto"] + ".Message) (n int)"
+
+		g.P("// XXX_OneofFuncs is for the internal use of the proto package.")
+		g.P("func (*", ccTypeName, ") XXX_OneofFuncs() (func", encSig, ", func", decSig, ", func", sizeSig, ", []interface{}) {")
+		g.P("return ", enc, ", ", dec, ", ", size, ", []interface{}{")
+		for _, field := range message.Field {
+			if field.OneofIndex == nil {
+				continue
+			}
+			g.P("(*", oneofTypeName[field], ")(nil),")
+		}
+		g.P("}")
+		g.P("}")
+		g.P()
+
+		// marshaler
+		g.P("func ", enc, encSig, " {")
+		g.P("m := msg.(*", ccTypeName, ")")
+		for oi, odp := range message.OneofDecl {
+			g.P("// ", odp.GetName())
+			fname := oneofFieldName[int32(oi)]
+			g.P("switch x := m.", fname, ".(type) {")
+			for _, field := range message.Field {
+				if field.OneofIndex == nil || int(*field.OneofIndex) != oi {
+					continue
+				}
+				g.P("case *", oneofTypeName[field], ":")
+				var wire, pre, post string
+				val := "x." + fieldNames[field] // overridden for TYPE_BOOL
+				canFail := false                // only TYPE_MESSAGE and TYPE_GROUP can fail
+				switch *field.Type {
+				case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
+					wire = "WireFixed64"
+					pre = "b.EncodeFixed64(" + g.Pkg["math"] + ".Float64bits("
+					post = "))"
+				case descriptor.FieldDescriptorProto_TYPE_FLOAT:
+					wire = "WireFixed32"
+					pre = "b.EncodeFixed32(uint64(" + g.Pkg["math"] + ".Float32bits("
+					post = ")))"
+				case descriptor.FieldDescriptorProto_TYPE_INT64,
+					descriptor.FieldDescriptorProto_TYPE_UINT64:
+					wire = "WireVarint"
+					pre, post = "b.EncodeVarint(uint64(", "))"
+				case descriptor.FieldDescriptorProto_TYPE_INT32,
+					descriptor.FieldDescriptorProto_TYPE_UINT32,
+					descriptor.FieldDescriptorProto_TYPE_ENUM:
+					wire = "WireVarint"
+					pre, post = "b.EncodeVarint(uint64(", "))"
+				case descriptor.FieldDescriptorProto_TYPE_FIXED64,
+					descriptor.FieldDescriptorProto_TYPE_SFIXED64:
+					wire = "WireFixed64"
+					pre, post = "b.EncodeFixed64(uint64(", "))"
+				case descriptor.FieldDescriptorProto_TYPE_FIXED32,
+					descriptor.FieldDescriptorProto_TYPE_SFIXED32:
+					wire = "WireFixed32"
+					pre, post = "b.EncodeFixed32(uint64(", "))"
+				case descriptor.FieldDescriptorProto_TYPE_BOOL:
+					// bool needs special handling.
+					g.P("t := uint64(0)")
+					g.P("if ", val, " { t = 1 }")
+					val = "t"
+					wire = "WireVarint"
+					pre, post = "b.EncodeVarint(", ")"
+				case descriptor.FieldDescriptorProto_TYPE_STRING:
+					wire = "WireBytes"
+					pre, post = "b.EncodeStringBytes(", ")"
+				case descriptor.FieldDescriptorProto_TYPE_GROUP:
+					wire = "WireStartGroup"
+					pre, post = "b.Marshal(", ")"
+					canFail = true
+				case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+					wire = "WireBytes"
+					pre, post = "b.EncodeMessage(", ")"
+					canFail = true
+				case descriptor.FieldDescriptorProto_TYPE_BYTES:
+					wire = "WireBytes"
+					pre, post = "b.EncodeRawBytes(", ")"
+				case descriptor.FieldDescriptorProto_TYPE_SINT32:
+					wire = "WireVarint"
+					pre, post = "b.EncodeZigzag32(uint64(", "))"
+				case descriptor.FieldDescriptorProto_TYPE_SINT64:
+					wire = "WireVarint"
+					pre, post = "b.EncodeZigzag64(uint64(", "))"
+				default:
+					g.Fail("unhandled oneof field type ", field.Type.String())
+				}
+				fieldWire[field] = wire
+				g.P("b.EncodeVarint(", field.Number, "<<3|", g.Pkg["proto"], ".", wire, ")")
+				if !canFail {
+					g.P(pre, val, post)
+				} else {
+					g.P("if err := ", pre, val, post, "; err != nil {")
+					g.P("return err")
+					g.P("}")
+				}
+				if *field.Type == descriptor.FieldDescriptorProto_TYPE_GROUP {
+					g.P("b.EncodeVarint(", field.Number, "<<3|", g.Pkg["proto"], ".WireEndGroup)")
+				}
+			}
+			g.P("case nil:")
+			g.P("default: return ", g.Pkg["fmt"], `.Errorf("`, ccTypeName, ".", fname, ` has unexpected type %T", x)`)
+			g.P("}")
+		}
+		g.P("return nil")
+		g.P("}")
+		g.P()
+
+		// unmarshaler
+		g.P("func ", dec, decSig, " {")
+		g.P("m := msg.(*", ccTypeName, ")")
+		g.P("switch tag {")
+		for _, field := range message.Field {
+			if field.OneofIndex == nil {
+				continue
+			}
+			odp := message.OneofDecl[int(*field.OneofIndex)]
+			g.P("case ", field.Number, ": // ", odp.GetName(), ".", *field.Name)
+			g.P("if wire != ", g.Pkg["proto"], ".", fieldWire[field], " {")
+			g.P("return true, ", g.Pkg["proto"], ".ErrInternalBadWireType")
+			g.P("}")
+			lhs := "x, err" // overridden for TYPE_MESSAGE and TYPE_GROUP
+			var dec, cast, cast2 string
+			switch *field.Type {
+			case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
+				dec, cast = "b.DecodeFixed64()", g.Pkg["math"]+".Float64frombits"
+			case descriptor.FieldDescriptorProto_TYPE_FLOAT:
+				dec, cast, cast2 = "b.DecodeFixed32()", "uint32", g.Pkg["math"]+".Float32frombits"
+			case descriptor.FieldDescriptorProto_TYPE_INT64:
+				dec, cast = "b.DecodeVarint()", "int64"
+			case descriptor.FieldDescriptorProto_TYPE_UINT64:
+				dec = "b.DecodeVarint()"
+			case descriptor.FieldDescriptorProto_TYPE_INT32:
+				dec, cast = "b.DecodeVarint()", "int32"
+			case descriptor.FieldDescriptorProto_TYPE_FIXED64:
+				dec = "b.DecodeFixed64()"
+			case descriptor.FieldDescriptorProto_TYPE_FIXED32:
+				dec, cast = "b.DecodeFixed32()", "uint32"
+			case descriptor.FieldDescriptorProto_TYPE_BOOL:
+				dec = "b.DecodeVarint()"
+				// handled specially below
+			case descriptor.FieldDescriptorProto_TYPE_STRING:
+				dec = "b.DecodeStringBytes()"
+			case descriptor.FieldDescriptorProto_TYPE_GROUP:
+				g.P("msg := new(", fieldTypes[field][1:], ")") // drop star
+				lhs = "err"
+				dec = "b.DecodeGroup(msg)"
+				// handled specially below
+			case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+				g.P("msg := new(", fieldTypes[field][1:], ")") // drop star
+				lhs = "err"
+				dec = "b.DecodeMessage(msg)"
+				// handled specially below
+			case descriptor.FieldDescriptorProto_TYPE_BYTES:
+				dec = "b.DecodeRawBytes(true)"
+			case descriptor.FieldDescriptorProto_TYPE_UINT32:
+				dec, cast = "b.DecodeVarint()", "uint32"
+			case descriptor.FieldDescriptorProto_TYPE_ENUM:
+				dec, cast = "b.DecodeVarint()", fieldTypes[field]
+			case descriptor.FieldDescriptorProto_TYPE_SFIXED32:
+				dec, cast = "b.DecodeFixed32()", "int32"
+			case descriptor.FieldDescriptorProto_TYPE_SFIXED64:
+				dec, cast = "b.DecodeFixed64()", "int64"
+			case descriptor.FieldDescriptorProto_TYPE_SINT32:
+				dec, cast = "b.DecodeZigzag32()", "int32"
+			case descriptor.FieldDescriptorProto_TYPE_SINT64:
+				dec, cast = "b.DecodeZigzag64()", "int64"
+			default:
+				g.Fail("unhandled oneof field type ", field.Type.String())
+			}
+			g.P(lhs, " := ", dec)
+			val := "x"
+			if cast != "" {
+				val = cast + "(" + val + ")"
+			}
+			if cast2 != "" {
+				val = cast2 + "(" + val + ")"
+			}
+			switch *field.Type {
+			case descriptor.FieldDescriptorProto_TYPE_BOOL:
+				val += " != 0"
+			case descriptor.FieldDescriptorProto_TYPE_GROUP,
+				descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+				val = "msg"
+			}
+			g.P("m.", oneofFieldName[*field.OneofIndex], " = &", oneofTypeName[field], "{", val, "}")
+			g.P("return true, err")
+		}
+		g.P("default: return false, nil")
+		g.P("}")
+		g.P("}")
+		g.P()
+
+		// sizer
+		g.P("func ", size, sizeSig, " {")
+		g.P("m := msg.(*", ccTypeName, ")")
+		for oi, odp := range message.OneofDecl {
+			g.P("// ", odp.GetName())
+			fname := oneofFieldName[int32(oi)]
+			g.P("switch x := m.", fname, ".(type) {")
+			for _, field := range message.Field {
+				if field.OneofIndex == nil || int(*field.OneofIndex) != oi {
+					continue
+				}
+				g.P("case *", oneofTypeName[field], ":")
+				val := "x." + fieldNames[field]
+				var wire, varint, fixed string
+				switch *field.Type {
+				case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
+					wire = "WireFixed64"
+					fixed = "8"
+				case descriptor.FieldDescriptorProto_TYPE_FLOAT:
+					wire = "WireFixed32"
+					fixed = "4"
+				case descriptor.FieldDescriptorProto_TYPE_INT64,
+					descriptor.FieldDescriptorProto_TYPE_UINT64,
+					descriptor.FieldDescriptorProto_TYPE_INT32,
+					descriptor.FieldDescriptorProto_TYPE_UINT32,
+					descriptor.FieldDescriptorProto_TYPE_ENUM:
+					wire = "WireVarint"
+					varint = val
+				case descriptor.FieldDescriptorProto_TYPE_FIXED64,
+					descriptor.FieldDescriptorProto_TYPE_SFIXED64:
+					wire = "WireFixed64"
+					fixed = "8"
+				case descriptor.FieldDescriptorProto_TYPE_FIXED32,
+					descriptor.FieldDescriptorProto_TYPE_SFIXED32:
+					wire = "WireFixed32"
+					fixed = "4"
+				case descriptor.FieldDescriptorProto_TYPE_BOOL:
+					wire = "WireVarint"
+					fixed = "1"
+				case descriptor.FieldDescriptorProto_TYPE_STRING:
+					wire = "WireBytes"
+					fixed = "len(" + val + ")"
+					varint = fixed
+				case descriptor.FieldDescriptorProto_TYPE_GROUP:
+					wire = "WireStartGroup"
+					fixed = g.Pkg["proto"] + ".Size(" + val + ")"
+				case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+					wire = "WireBytes"
+					g.P("s := ", g.Pkg["proto"], ".Size(", val, ")")
+					fixed = "s"
+					varint = fixed
+				case descriptor.FieldDescriptorProto_TYPE_BYTES:
+					wire = "WireBytes"
+					fixed = "len(" + val + ")"
+					varint = fixed
+				case descriptor.FieldDescriptorProto_TYPE_SINT32:
+					wire = "WireVarint"
+					varint = "(uint32(" + val + ") << 1) ^ uint32((int32(" + val + ") >> 31))"
+				case descriptor.FieldDescriptorProto_TYPE_SINT64:
+					wire = "WireVarint"
+					varint = "uint64(" + val + " << 1) ^ uint64((int64(" + val + ") >> 63))"
+				default:
+					g.Fail("unhandled oneof field type ", field.Type.String())
+				}
+				g.P("n += ", g.Pkg["proto"], ".SizeVarint(", field.Number, "<<3|", g.Pkg["proto"], ".", wire, ")")
+				if varint != "" {
+					g.P("n += ", g.Pkg["proto"], ".SizeVarint(uint64(", varint, "))")
+				}
+				if fixed != "" {
+					g.P("n += ", fixed)
+				}
+				if *field.Type == descriptor.FieldDescriptorProto_TYPE_GROUP {
+					g.P("n += ", g.Pkg["proto"], ".SizeVarint(", field.Number, "<<3|", g.Pkg["proto"], ".WireEndGroup)")
+				}
+			}
+			g.P("case nil:")
+			g.P("default:")
+			g.P("panic(", g.Pkg["fmt"], ".Sprintf(\"proto: unexpected type %T in oneof\", x))")
+			g.P("}")
+		}
+		g.P("return n")
+		g.P("}")
+		g.P()
+	}
+
+	for _, ext := range message.ext {
+		g.generateExtension(ext)
+	}
+
+	fullName := strings.Join(message.TypeName(), ".")
+	if g.file.Package != nil {
+		fullName = *g.file.Package + "." + fullName
+	}
+
+	g.addInitf("%s.RegisterType((*%s)(nil), %q)", g.Pkg["proto"], ccTypeName, fullName)
+}
+
+func (g *Generator) generateExtension(ext *ExtensionDescriptor) {
+	ccTypeName := ext.DescName()
+
+	extObj := g.ObjectNamed(*ext.Extendee)
+	var extDesc *Descriptor
+	if id, ok := extObj.(*ImportedDescriptor); ok {
+		// This is extending a publicly imported message.
+		// We need the underlying type for goTag.
+		extDesc = id.o.(*Descriptor)
+	} else {
+		extDesc = extObj.(*Descriptor)
+	}
+	extendedType := "*" + g.TypeName(extObj) // always use the original
+	field := ext.FieldDescriptorProto
+	fieldType, wireType := g.GoType(ext.parent, field)
+	tag := g.goTag(extDesc, field, wireType)
+	g.RecordTypeUse(*ext.Extendee)
+	if n := ext.FieldDescriptorProto.TypeName; n != nil {
+		// foreign extension type
+		g.RecordTypeUse(*n)
+	}
+
+	typeName := ext.TypeName()
+
+	// Special case for proto2 message sets: If this extension is extending
+	// proto2_bridge.MessageSet, and its final name component is "message_set_extension",
+	// then drop that last component.
+	mset := false
+	if extendedType == "*proto2_bridge.MessageSet" && typeName[len(typeName)-1] == "message_set_extension" {
+		typeName = typeName[:len(typeName)-1]
+		mset = true
+	}
+
+	// For text formatting, the package must be exactly what the .proto file declares,
+	// ignoring overrides such as the go_package option, and with no dot/underscore mapping.
+	extName := strings.Join(typeName, ".")
+	if g.file.Package != nil {
+		extName = *g.file.Package + "." + extName
+	}
+
+	g.P("var ", ccTypeName, " = &", g.Pkg["proto"], ".ExtensionDesc{")
+	g.In()
+	g.P("ExtendedType: (", extendedType, ")(nil),")
+	g.P("ExtensionType: (", fieldType, ")(nil),")
+	g.P("Field: ", field.Number, ",")
+	g.P(`Name: "`, extName, `",`)
+	g.P("Tag: ", tag, ",")
+	g.P(`Filename: "`, g.file.GetName(), `",`)
+
+	g.Out()
+	g.P("}")
+	g.P()
+
+	if mset {
+		// Generate a bit more code to register with message_set.go.
+		g.addInitf("%s.RegisterMessageSetType((%s)(nil), %d, %q)", g.Pkg["proto"], fieldType, *field.Number, extName)
+	}
+
+	g.file.addExport(ext, constOrVarSymbol{ccTypeName, "var", ""})
+}
+
+func (g *Generator) generateInitFunction() {
+	for _, enum := range g.file.enum {
+		g.generateEnumRegistration(enum)
+	}
+	for _, d := range g.file.desc {
+		for _, ext := range d.ext {
+			g.generateExtensionRegistration(ext)
+		}
+	}
+	for _, ext := range g.file.ext {
+		g.generateExtensionRegistration(ext)
+	}
+	if len(g.init) == 0 {
+		return
+	}
+	g.P("func init() {")
+	g.In()
+	for _, l := range g.init {
+		g.P(l)
+	}
+	g.Out()
+	g.P("}")
+	g.init = nil
+}
+
+func (g *Generator) generateFileDescriptor(file *FileDescriptor) {
+	// Make a copy and trim source_code_info data.
+	// TODO: Trim this more when we know exactly what we need.
+	pb := proto.Clone(file.FileDescriptorProto).(*descriptor.FileDescriptorProto)
+	pb.SourceCodeInfo = nil
+
+	b, err := proto.Marshal(pb)
+	if err != nil {
+		g.Fail(err.Error())
+	}
+
+	var buf bytes.Buffer
+	w, _ := gzip.NewWriterLevel(&buf, gzip.BestCompression)
+	w.Write(b)
+	w.Close()
+	b = buf.Bytes()
+
+	v := file.VarName()
+	g.P()
+	g.P("func init() { ", g.Pkg["proto"], ".RegisterFile(", strconv.Quote(*file.Name), ", ", v, ") }")
+	g.P("var ", v, " = []byte{")
+	g.In()
+	g.P("// ", len(b), " bytes of a gzipped FileDescriptorProto")
+	for len(b) > 0 {
+		n := 16
+		if n > len(b) {
+			n = len(b)
+		}
+
+		s := ""
+		for _, c := range b[:n] {
+			s += fmt.Sprintf("0x%02x,", c)
+		}
+		g.P(s)
+
+		b = b[n:]
+	}
+	g.Out()
+	g.P("}")
+}
+
+func (g *Generator) generateEnumRegistration(enum *EnumDescriptor) {
+	// // We always print the full (proto-world) package name here.
+	pkg := enum.File().GetPackage()
+	if pkg != "" {
+		pkg += "."
+	}
+	// The full type name
+	typeName := enum.TypeName()
+	// The full type name, CamelCased.
+	ccTypeName := CamelCaseSlice(typeName)
+	g.addInitf("%s.RegisterEnum(%q, %[3]s_name, %[3]s_value)", g.Pkg["proto"], pkg+ccTypeName, ccTypeName)
+}
+
+func (g *Generator) generateExtensionRegistration(ext *ExtensionDescriptor) {
+	g.addInitf("%s.RegisterExtension(%s)", g.Pkg["proto"], ext.DescName())
+}
+
+// And now lots of helper functions.
+
+// Is c an ASCII lower-case letter?
+func isASCIILower(c byte) bool {
+	return 'a' <= c && c <= 'z'
+}
+
+// Is c an ASCII digit?
+func isASCIIDigit(c byte) bool {
+	return '0' <= c && c <= '9'
+}
+
+// CamelCase returns the CamelCased name.
+// If there is an interior underscore followed by a lower case letter,
+// drop the underscore and convert the letter to upper case.
+// There is a remote possibility of this rewrite causing a name collision,
+// but it's so remote we're prepared to pretend it's nonexistent - since the
+// C++ generator lowercases names, it's extremely unlikely to have two fields
+// with different capitalizations.
+// In short, _my_field_name_2 becomes XMyFieldName_2.
+func CamelCase(s string) string {
+	if s == "" {
+		return ""
+	}
+	t := make([]byte, 0, 32)
+	i := 0
+	if s[0] == '_' {
+		// Need a capital letter; drop the '_'.
+		t = append(t, 'X')
+		i++
+	}
+	// Invariant: if the next letter is lower case, it must be converted
+	// to upper case.
+	// That is, we process a word at a time, where words are marked by _ or
+	// upper case letter. Digits are treated as words.
+	for ; i < len(s); i++ {
+		c := s[i]
+		if c == '_' && i+1 < len(s) && isASCIILower(s[i+1]) {
+			continue // Skip the underscore in s.
+		}
+		if isASCIIDigit(c) {
+			t = append(t, c)
+			continue
+		}
+		// Assume we have a letter now - if not, it's a bogus identifier.
+		// The next word is a sequence of characters that must start upper case.
+		if isASCIILower(c) {
+			c ^= ' ' // Make it a capital letter.
+		}
+		t = append(t, c) // Guaranteed not lower case.
+		// Accept lower case sequence that follows.
+		for i+1 < len(s) && isASCIILower(s[i+1]) {
+			i++
+			t = append(t, s[i])
+		}
+	}
+	return string(t)
+}
+
+// CamelCaseSlice is like CamelCase, but the argument is a slice of strings to
+// be joined with "_".
+func CamelCaseSlice(elem []string) string { return CamelCase(strings.Join(elem, "_")) }
+
+// dottedSlice turns a sliced name into a dotted name.
+func dottedSlice(elem []string) string { return strings.Join(elem, ".") }
+
+// Is this field optional?
+func isOptional(field *descriptor.FieldDescriptorProto) bool {
+	return field.Label != nil && *field.Label == descriptor.FieldDescriptorProto_LABEL_OPTIONAL
+}
+
+// Is this field required?
+func isRequired(field *descriptor.FieldDescriptorProto) bool {
+	return field.Label != nil && *field.Label == descriptor.FieldDescriptorProto_LABEL_REQUIRED
+}
+
+// Is this field repeated?
+func isRepeated(field *descriptor.FieldDescriptorProto) bool {
+	return field.Label != nil && *field.Label == descriptor.FieldDescriptorProto_LABEL_REPEATED
+}
+
+// Is this field a scalar numeric type?
+func isScalar(field *descriptor.FieldDescriptorProto) bool {
+	if field.Type == nil {
+		return false
+	}
+	switch *field.Type {
+	case descriptor.FieldDescriptorProto_TYPE_DOUBLE,
+		descriptor.FieldDescriptorProto_TYPE_FLOAT,
+		descriptor.FieldDescriptorProto_TYPE_INT64,
+		descriptor.FieldDescriptorProto_TYPE_UINT64,
+		descriptor.FieldDescriptorProto_TYPE_INT32,
+		descriptor.FieldDescriptorProto_TYPE_FIXED64,
+		descriptor.FieldDescriptorProto_TYPE_FIXED32,
+		descriptor.FieldDescriptorProto_TYPE_BOOL,
+		descriptor.FieldDescriptorProto_TYPE_UINT32,
+		descriptor.FieldDescriptorProto_TYPE_ENUM,
+		descriptor.FieldDescriptorProto_TYPE_SFIXED32,
+		descriptor.FieldDescriptorProto_TYPE_SFIXED64,
+		descriptor.FieldDescriptorProto_TYPE_SINT32,
+		descriptor.FieldDescriptorProto_TYPE_SINT64:
+		return true
+	default:
+		return false
+	}
+}
+
+// badToUnderscore is the mapping function used to generate Go names from package names,
+// which can be dotted in the input .proto file.  It replaces non-identifier characters such as
+// dot or dash with underscore.
+func badToUnderscore(r rune) rune {
+	if unicode.IsLetter(r) || unicode.IsDigit(r) || r == '_' {
+		return r
+	}
+	return '_'
+}
+
+// baseName returns the last path element of the name, with the last dotted suffix removed.
+func baseName(name string) string {
+	// First, find the last element
+	if i := strings.LastIndex(name, "/"); i >= 0 {
+		name = name[i+1:]
+	}
+	// Now drop the suffix
+	if i := strings.LastIndex(name, "."); i >= 0 {
+		name = name[0:i]
+	}
+	return name
+}
+
+// The SourceCodeInfo message describes the location of elements of a parsed
+// .proto file by way of a "path", which is a sequence of integers that
+// describe the route from a FileDescriptorProto to the relevant submessage.
+// The path alternates between a field number of a repeated field, and an index
+// into that repeated field. The constants below define the field numbers that
+// are used.
+//
+// See descriptor.proto for more information about this.
+const (
+	// tag numbers in FileDescriptorProto
+	packagePath = 2 // package
+	messagePath = 4 // message_type
+	enumPath    = 5 // enum_type
+	// tag numbers in DescriptorProto
+	messageFieldPath   = 2 // field
+	messageMessagePath = 3 // nested_type
+	messageEnumPath    = 4 // enum_type
+	messageOneofPath   = 8 // oneof_decl
+	// tag numbers in EnumDescriptorProto
+	enumValuePath = 2 // value
+)
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/generator/name_test.go b/vendor/github.com/golang/protobuf/protoc-gen-go/generator/name_test.go
new file mode 100644
index 000000000..a5ebc8533
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/generator/name_test.go
@@ -0,0 +1,85 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2013 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package generator
+
+import (
+	"testing"
+
+	"github.com/golang/protobuf/protoc-gen-go/descriptor"
+)
+
+func TestCamelCase(t *testing.T) {
+	tests := []struct {
+		in, want string
+	}{
+		{"one", "One"},
+		{"one_two", "OneTwo"},
+		{"_my_field_name_2", "XMyFieldName_2"},
+		{"Something_Capped", "Something_Capped"},
+		{"my_Name", "My_Name"},
+		{"OneTwo", "OneTwo"},
+		{"_", "X"},
+		{"_a_", "XA_"},
+	}
+	for _, tc := range tests {
+		if got := CamelCase(tc.in); got != tc.want {
+			t.Errorf("CamelCase(%q) = %q, want %q", tc.in, got, tc.want)
+		}
+	}
+}
+
+func TestGoPackageOption(t *testing.T) {
+	tests := []struct {
+		in           string
+		impPath, pkg string
+		ok           bool
+	}{
+		{"", "", "", false},
+		{"foo", "", "foo", true},
+		{"github.com/golang/bar", "github.com/golang/bar", "bar", true},
+		{"github.com/golang/bar;baz", "github.com/golang/bar", "baz", true},
+	}
+	for _, tc := range tests {
+		d := &FileDescriptor{
+			FileDescriptorProto: &descriptor.FileDescriptorProto{
+				Options: &descriptor.FileOptions{
+					GoPackage: &tc.in,
+				},
+			},
+		}
+		impPath, pkg, ok := d.goPackageOption()
+		if impPath != tc.impPath || pkg != tc.pkg || ok != tc.ok {
+			t.Errorf("go_package = %q => (%q, %q, %t), want (%q, %q, %t)", tc.in,
+				impPath, pkg, ok, tc.impPath, tc.pkg, tc.ok)
+		}
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/grpc/grpc.go b/vendor/github.com/golang/protobuf/protoc-gen-go/grpc/grpc.go
new file mode 100644
index 000000000..2660e47a2
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/grpc/grpc.go
@@ -0,0 +1,463 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2015 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Package grpc outputs gRPC service descriptions in Go code.
+// It runs as a plugin for the Go protocol buffer compiler plugin.
+// It is linked in to protoc-gen-go.
+package grpc
+
+import (
+	"fmt"
+	"path"
+	"strconv"
+	"strings"
+
+	pb "github.com/golang/protobuf/protoc-gen-go/descriptor"
+	"github.com/golang/protobuf/protoc-gen-go/generator"
+)
+
+// generatedCodeVersion indicates a version of the generated code.
+// It is incremented whenever an incompatibility between the generated code and
+// the grpc package is introduced; the generated code references
+// a constant, grpc.SupportPackageIsVersionN (where N is generatedCodeVersion).
+const generatedCodeVersion = 4
+
+// Paths for packages used by code generated in this file,
+// relative to the import_prefix of the generator.Generator.
+const (
+	contextPkgPath = "golang.org/x/net/context"
+	grpcPkgPath    = "google.golang.org/grpc"
+)
+
+func init() {
+	generator.RegisterPlugin(new(grpc))
+}
+
+// grpc is an implementation of the Go protocol buffer compiler's
+// plugin architecture.  It generates bindings for gRPC support.
+type grpc struct {
+	gen *generator.Generator
+}
+
+// Name returns the name of this plugin, "grpc".
+func (g *grpc) Name() string {
+	return "grpc"
+}
+
+// The names for packages imported in the generated code.
+// They may vary from the final path component of the import path
+// if the name is used by other packages.
+var (
+	contextPkg string
+	grpcPkg    string
+)
+
+// Init initializes the plugin.
+func (g *grpc) Init(gen *generator.Generator) {
+	g.gen = gen
+	contextPkg = generator.RegisterUniquePackageName("context", nil)
+	grpcPkg = generator.RegisterUniquePackageName("grpc", nil)
+}
+
+// Given a type name defined in a .proto, return its object.
+// Also record that we're using it, to guarantee the associated import.
+func (g *grpc) objectNamed(name string) generator.Object {
+	g.gen.RecordTypeUse(name)
+	return g.gen.ObjectNamed(name)
+}
+
+// Given a type name defined in a .proto, return its name as we will print it.
+func (g *grpc) typeName(str string) string {
+	return g.gen.TypeName(g.objectNamed(str))
+}
+
+// P forwards to g.gen.P.
+func (g *grpc) P(args ...interface{}) { g.gen.P(args...) }
+
+// Generate generates code for the services in the given file.
+func (g *grpc) Generate(file *generator.FileDescriptor) {
+	if len(file.FileDescriptorProto.Service) == 0 {
+		return
+	}
+
+	g.P("// Reference imports to suppress errors if they are not otherwise used.")
+	g.P("var _ ", contextPkg, ".Context")
+	g.P("var _ ", grpcPkg, ".ClientConn")
+	g.P()
+
+	// Assert version compatibility.
+	g.P("// This is a compile-time assertion to ensure that this generated file")
+	g.P("// is compatible with the grpc package it is being compiled against.")
+	g.P("const _ = ", grpcPkg, ".SupportPackageIsVersion", generatedCodeVersion)
+	g.P()
+
+	for i, service := range file.FileDescriptorProto.Service {
+		g.generateService(file, service, i)
+	}
+}
+
+// GenerateImports generates the import declaration for this file.
+func (g *grpc) GenerateImports(file *generator.FileDescriptor) {
+	if len(file.FileDescriptorProto.Service) == 0 {
+		return
+	}
+	g.P("import (")
+	g.P(contextPkg, " ", strconv.Quote(path.Join(g.gen.ImportPrefix, contextPkgPath)))
+	g.P(grpcPkg, " ", strconv.Quote(path.Join(g.gen.ImportPrefix, grpcPkgPath)))
+	g.P(")")
+	g.P()
+}
+
+// reservedClientName records whether a client name is reserved on the client side.
+var reservedClientName = map[string]bool{
+// TODO: do we need any in gRPC?
+}
+
+func unexport(s string) string { return strings.ToLower(s[:1]) + s[1:] }
+
+// generateService generates all the code for the named service.
+func (g *grpc) generateService(file *generator.FileDescriptor, service *pb.ServiceDescriptorProto, index int) {
+	path := fmt.Sprintf("6,%d", index) // 6 means service.
+
+	origServName := service.GetName()
+	fullServName := origServName
+	if pkg := file.GetPackage(); pkg != "" {
+		fullServName = pkg + "." + fullServName
+	}
+	servName := generator.CamelCase(origServName)
+
+	g.P()
+	g.P("// Client API for ", servName, " service")
+	g.P()
+
+	// Client interface.
+	g.P("type ", servName, "Client interface {")
+	for i, method := range service.Method {
+		g.gen.PrintComments(fmt.Sprintf("%s,2,%d", path, i)) // 2 means method in a service.
+		g.P(g.generateClientSignature(servName, method))
+	}
+	g.P("}")
+	g.P()
+
+	// Client structure.
+	g.P("type ", unexport(servName), "Client struct {")
+	g.P("cc *", grpcPkg, ".ClientConn")
+	g.P("}")
+	g.P()
+
+	// NewClient factory.
+	g.P("func New", servName, "Client (cc *", grpcPkg, ".ClientConn) ", servName, "Client {")
+	g.P("return &", unexport(servName), "Client{cc}")
+	g.P("}")
+	g.P()
+
+	var methodIndex, streamIndex int
+	serviceDescVar := "_" + servName + "_serviceDesc"
+	// Client method implementations.
+	for _, method := range service.Method {
+		var descExpr string
+		if !method.GetServerStreaming() && !method.GetClientStreaming() {
+			// Unary RPC method
+			descExpr = fmt.Sprintf("&%s.Methods[%d]", serviceDescVar, methodIndex)
+			methodIndex++
+		} else {
+			// Streaming RPC method
+			descExpr = fmt.Sprintf("&%s.Streams[%d]", serviceDescVar, streamIndex)
+			streamIndex++
+		}
+		g.generateClientMethod(servName, fullServName, serviceDescVar, method, descExpr)
+	}
+
+	g.P("// Server API for ", servName, " service")
+	g.P()
+
+	// Server interface.
+	serverType := servName + "Server"
+	g.P("type ", serverType, " interface {")
+	for i, method := range service.Method {
+		g.gen.PrintComments(fmt.Sprintf("%s,2,%d", path, i)) // 2 means method in a service.
+		g.P(g.generateServerSignature(servName, method))
+	}
+	g.P("}")
+	g.P()
+
+	// Server registration.
+	g.P("func Register", servName, "Server(s *", grpcPkg, ".Server, srv ", serverType, ") {")
+	g.P("s.RegisterService(&", serviceDescVar, `, srv)`)
+	g.P("}")
+	g.P()
+
+	// Server handler implementations.
+	var handlerNames []string
+	for _, method := range service.Method {
+		hname := g.generateServerMethod(servName, fullServName, method)
+		handlerNames = append(handlerNames, hname)
+	}
+
+	// Service descriptor.
+	g.P("var ", serviceDescVar, " = ", grpcPkg, ".ServiceDesc {")
+	g.P("ServiceName: ", strconv.Quote(fullServName), ",")
+	g.P("HandlerType: (*", serverType, ")(nil),")
+	g.P("Methods: []", grpcPkg, ".MethodDesc{")
+	for i, method := range service.Method {
+		if method.GetServerStreaming() || method.GetClientStreaming() {
+			continue
+		}
+		g.P("{")
+		g.P("MethodName: ", strconv.Quote(method.GetName()), ",")
+		g.P("Handler: ", handlerNames[i], ",")
+		g.P("},")
+	}
+	g.P("},")
+	g.P("Streams: []", grpcPkg, ".StreamDesc{")
+	for i, method := range service.Method {
+		if !method.GetServerStreaming() && !method.GetClientStreaming() {
+			continue
+		}
+		g.P("{")
+		g.P("StreamName: ", strconv.Quote(method.GetName()), ",")
+		g.P("Handler: ", handlerNames[i], ",")
+		if method.GetServerStreaming() {
+			g.P("ServerStreams: true,")
+		}
+		if method.GetClientStreaming() {
+			g.P("ClientStreams: true,")
+		}
+		g.P("},")
+	}
+	g.P("},")
+	g.P("Metadata: \"", file.GetName(), "\",")
+	g.P("}")
+	g.P()
+}
+
+// generateClientSignature returns the client-side signature for a method.
+func (g *grpc) generateClientSignature(servName string, method *pb.MethodDescriptorProto) string {
+	origMethName := method.GetName()
+	methName := generator.CamelCase(origMethName)
+	if reservedClientName[methName] {
+		methName += "_"
+	}
+	reqArg := ", in *" + g.typeName(method.GetInputType())
+	if method.GetClientStreaming() {
+		reqArg = ""
+	}
+	respName := "*" + g.typeName(method.GetOutputType())
+	if method.GetServerStreaming() || method.GetClientStreaming() {
+		respName = servName + "_" + generator.CamelCase(origMethName) + "Client"
+	}
+	return fmt.Sprintf("%s(ctx %s.Context%s, opts ...%s.CallOption) (%s, error)", methName, contextPkg, reqArg, grpcPkg, respName)
+}
+
+func (g *grpc) generateClientMethod(servName, fullServName, serviceDescVar string, method *pb.MethodDescriptorProto, descExpr string) {
+	sname := fmt.Sprintf("/%s/%s", fullServName, method.GetName())
+	methName := generator.CamelCase(method.GetName())
+	inType := g.typeName(method.GetInputType())
+	outType := g.typeName(method.GetOutputType())
+
+	g.P("func (c *", unexport(servName), "Client) ", g.generateClientSignature(servName, method), "{")
+	if !method.GetServerStreaming() && !method.GetClientStreaming() {
+		g.P("out := new(", outType, ")")
+		// TODO: Pass descExpr to Invoke.
+		g.P("err := ", grpcPkg, `.Invoke(ctx, "`, sname, `", in, out, c.cc, opts...)`)
+		g.P("if err != nil { return nil, err }")
+		g.P("return out, nil")
+		g.P("}")
+		g.P()
+		return
+	}
+	streamType := unexport(servName) + methName + "Client"
+	g.P("stream, err := ", grpcPkg, ".NewClientStream(ctx, ", descExpr, `, c.cc, "`, sname, `", opts...)`)
+	g.P("if err != nil { return nil, err }")
+	g.P("x := &", streamType, "{stream}")
+	if !method.GetClientStreaming() {
+		g.P("if err := x.ClientStream.SendMsg(in); err != nil { return nil, err }")
+		g.P("if err := x.ClientStream.CloseSend(); err != nil { return nil, err }")
+	}
+	g.P("return x, nil")
+	g.P("}")
+	g.P()
+
+	genSend := method.GetClientStreaming()
+	genRecv := method.GetServerStreaming()
+	genCloseAndRecv := !method.GetServerStreaming()
+
+	// Stream auxiliary types and methods.
+	g.P("type ", servName, "_", methName, "Client interface {")
+	if genSend {
+		g.P("Send(*", inType, ") error")
+	}
+	if genRecv {
+		g.P("Recv() (*", outType, ", error)")
+	}
+	if genCloseAndRecv {
+		g.P("CloseAndRecv() (*", outType, ", error)")
+	}
+	g.P(grpcPkg, ".ClientStream")
+	g.P("}")
+	g.P()
+
+	g.P("type ", streamType, " struct {")
+	g.P(grpcPkg, ".ClientStream")
+	g.P("}")
+	g.P()
+
+	if genSend {
+		g.P("func (x *", streamType, ") Send(m *", inType, ") error {")
+		g.P("return x.ClientStream.SendMsg(m)")
+		g.P("}")
+		g.P()
+	}
+	if genRecv {
+		g.P("func (x *", streamType, ") Recv() (*", outType, ", error) {")
+		g.P("m := new(", outType, ")")
+		g.P("if err := x.ClientStream.RecvMsg(m); err != nil { return nil, err }")
+		g.P("return m, nil")
+		g.P("}")
+		g.P()
+	}
+	if genCloseAndRecv {
+		g.P("func (x *", streamType, ") CloseAndRecv() (*", outType, ", error) {")
+		g.P("if err := x.ClientStream.CloseSend(); err != nil { return nil, err }")
+		g.P("m := new(", outType, ")")
+		g.P("if err := x.ClientStream.RecvMsg(m); err != nil { return nil, err }")
+		g.P("return m, nil")
+		g.P("}")
+		g.P()
+	}
+}
+
+// generateServerSignature returns the server-side signature for a method.
+func (g *grpc) generateServerSignature(servName string, method *pb.MethodDescriptorProto) string {
+	origMethName := method.GetName()
+	methName := generator.CamelCase(origMethName)
+	if reservedClientName[methName] {
+		methName += "_"
+	}
+
+	var reqArgs []string
+	ret := "error"
+	if !method.GetServerStreaming() && !method.GetClientStreaming() {
+		reqArgs = append(reqArgs, contextPkg+".Context")
+		ret = "(*" + g.typeName(method.GetOutputType()) + ", error)"
+	}
+	if !method.GetClientStreaming() {
+		reqArgs = append(reqArgs, "*"+g.typeName(method.GetInputType()))
+	}
+	if method.GetServerStreaming() || method.GetClientStreaming() {
+		reqArgs = append(reqArgs, servName+"_"+generator.CamelCase(origMethName)+"Server")
+	}
+
+	return methName + "(" + strings.Join(reqArgs, ", ") + ") " + ret
+}
+
+func (g *grpc) generateServerMethod(servName, fullServName string, method *pb.MethodDescriptorProto) string {
+	methName := generator.CamelCase(method.GetName())
+	hname := fmt.Sprintf("_%s_%s_Handler", servName, methName)
+	inType := g.typeName(method.GetInputType())
+	outType := g.typeName(method.GetOutputType())
+
+	if !method.GetServerStreaming() && !method.GetClientStreaming() {
+		g.P("func ", hname, "(srv interface{}, ctx ", contextPkg, ".Context, dec func(interface{}) error, interceptor ", grpcPkg, ".UnaryServerInterceptor) (interface{}, error) {")
+		g.P("in := new(", inType, ")")
+		g.P("if err := dec(in); err != nil { return nil, err }")
+		g.P("if interceptor == nil { return srv.(", servName, "Server).", methName, "(ctx, in) }")
+		g.P("info := &", grpcPkg, ".UnaryServerInfo{")
+		g.P("Server: srv,")
+		g.P("FullMethod: ", strconv.Quote(fmt.Sprintf("/%s/%s", fullServName, methName)), ",")
+		g.P("}")
+		g.P("handler := func(ctx ", contextPkg, ".Context, req interface{}) (interface{}, error) {")
+		g.P("return srv.(", servName, "Server).", methName, "(ctx, req.(*", inType, "))")
+		g.P("}")
+		g.P("return interceptor(ctx, in, info, handler)")
+		g.P("}")
+		g.P()
+		return hname
+	}
+	streamType := unexport(servName) + methName + "Server"
+	g.P("func ", hname, "(srv interface{}, stream ", grpcPkg, ".ServerStream) error {")
+	if !method.GetClientStreaming() {
+		g.P("m := new(", inType, ")")
+		g.P("if err := stream.RecvMsg(m); err != nil { return err }")
+		g.P("return srv.(", servName, "Server).", methName, "(m, &", streamType, "{stream})")
+	} else {
+		g.P("return srv.(", servName, "Server).", methName, "(&", streamType, "{stream})")
+	}
+	g.P("}")
+	g.P()
+
+	genSend := method.GetServerStreaming()
+	genSendAndClose := !method.GetServerStreaming()
+	genRecv := method.GetClientStreaming()
+
+	// Stream auxiliary types and methods.
+	g.P("type ", servName, "_", methName, "Server interface {")
+	if genSend {
+		g.P("Send(*", outType, ") error")
+	}
+	if genSendAndClose {
+		g.P("SendAndClose(*", outType, ") error")
+	}
+	if genRecv {
+		g.P("Recv() (*", inType, ", error)")
+	}
+	g.P(grpcPkg, ".ServerStream")
+	g.P("}")
+	g.P()
+
+	g.P("type ", streamType, " struct {")
+	g.P(grpcPkg, ".ServerStream")
+	g.P("}")
+	g.P()
+
+	if genSend {
+		g.P("func (x *", streamType, ") Send(m *", outType, ") error {")
+		g.P("return x.ServerStream.SendMsg(m)")
+		g.P("}")
+		g.P()
+	}
+	if genSendAndClose {
+		g.P("func (x *", streamType, ") SendAndClose(m *", outType, ") error {")
+		g.P("return x.ServerStream.SendMsg(m)")
+		g.P("}")
+		g.P()
+	}
+	if genRecv {
+		g.P("func (x *", streamType, ") Recv() (*", inType, ", error) {")
+		g.P("m := new(", inType, ")")
+		g.P("if err := x.ServerStream.RecvMsg(m); err != nil { return nil, err }")
+		g.P("return m, nil")
+		g.P("}")
+		g.P()
+	}
+
+	return hname
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/link_grpc.go b/vendor/github.com/golang/protobuf/protoc-gen-go/link_grpc.go
new file mode 100644
index 000000000..532a55005
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/link_grpc.go
@@ -0,0 +1,34 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2015 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package main
+
+import _ "github.com/golang/protobuf/protoc-gen-go/grpc"
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/main.go b/vendor/github.com/golang/protobuf/protoc-gen-go/main.go
new file mode 100644
index 000000000..8e2486de0
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/main.go
@@ -0,0 +1,98 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// protoc-gen-go is a plugin for the Google protocol buffer compiler to generate
+// Go code.  Run it by building this program and putting it in your path with
+// the name
+// 	protoc-gen-go
+// That word 'go' at the end becomes part of the option string set for the
+// protocol compiler, so once the protocol compiler (protoc) is installed
+// you can run
+// 	protoc --go_out=output_directory input_directory/file.proto
+// to generate Go bindings for the protocol defined by file.proto.
+// With that input, the output will be written to
+// 	output_directory/file.pb.go
+//
+// The generated code is documented in the package comment for
+// the library.
+//
+// See the README and documentation for protocol buffers to learn more:
+// 	https://developers.google.com/protocol-buffers/
+package main
+
+import (
+	"io/ioutil"
+	"os"
+
+	"github.com/golang/protobuf/proto"
+	"github.com/golang/protobuf/protoc-gen-go/generator"
+)
+
+func main() {
+	// Begin by allocating a generator. The request and response structures are stored there
+	// so we can do error handling easily - the response structure contains the field to
+	// report failure.
+	g := generator.New()
+
+	data, err := ioutil.ReadAll(os.Stdin)
+	if err != nil {
+		g.Error(err, "reading input")
+	}
+
+	if err := proto.Unmarshal(data, g.Request); err != nil {
+		g.Error(err, "parsing input proto")
+	}
+
+	if len(g.Request.FileToGenerate) == 0 {
+		g.Fail("no files to generate")
+	}
+
+	g.CommandLineParameters(g.Request.GetParameter())
+
+	// Create a wrapped version of the Descriptors and EnumDescriptors that
+	// point to the file that defines them.
+	g.WrapTypes()
+
+	g.SetPackageNames()
+	g.BuildTypeNameMap()
+
+	g.GenerateAllFiles()
+
+	// Send back the results.
+	data, err = proto.Marshal(g.Response)
+	if err != nil {
+		g.Error(err, "failed to marshal output proto")
+	}
+	_, err = os.Stdout.Write(data)
+	if err != nil {
+		g.Error(err, "failed to write output proto")
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/plugin/Makefile b/vendor/github.com/golang/protobuf/protoc-gen-go/plugin/Makefile
new file mode 100644
index 000000000..eb41f20da
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/plugin/Makefile
@@ -0,0 +1,45 @@
+# Go support for Protocol Buffers - Google's data interchange format
+#
+# Copyright 2010 The Go Authors.  All rights reserved.
+# https://github.com/golang/protobuf
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Not stored here, but plugin.proto is in https://github.com/google/protobuf/
+# at src/google/protobuf/compiler/plugin.proto
+# Also we need to fix an import.
+regenerate:
+	echo WARNING! THIS RULE IS PROBABLY NOT RIGHT FOR YOUR INSTALLATION
+	protoc --go_out=Mgoogle/protobuf/descriptor.proto=github.com/golang/protobuf/protoc-gen-go/descriptor:. \
+		-I$(HOME)/src/protobuf/src $(HOME)/src/protobuf/src/google/protobuf/compiler/plugin.proto && \
+		mv google/protobuf/compiler/plugin.pb.go $(GOPATH)/src/github.com/golang/protobuf/protoc-gen-go/plugin
+
+restore:
+	cp plugin.pb.golden plugin.pb.go
+
+preserve:
+	cp plugin.pb.go plugin.pb.golden
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/plugin/plugin.pb.go b/vendor/github.com/golang/protobuf/protoc-gen-go/plugin/plugin.pb.go
new file mode 100644
index 000000000..0ff4e13a8
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/plugin/plugin.pb.go
@@ -0,0 +1,229 @@
+// Code generated by protoc-gen-go.
+// source: google/protobuf/compiler/plugin.proto
+// DO NOT EDIT!
+
+/*
+Package plugin_go is a generated protocol buffer package.
+
+It is generated from these files:
+	google/protobuf/compiler/plugin.proto
+
+It has these top-level messages:
+	CodeGeneratorRequest
+	CodeGeneratorResponse
+*/
+package plugin_go
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+import google_protobuf "github.com/golang/protobuf/protoc-gen-go/descriptor"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+// An encoded CodeGeneratorRequest is written to the plugin's stdin.
+type CodeGeneratorRequest struct {
+	// The .proto files that were explicitly listed on the command-line.  The
+	// code generator should generate code only for these files.  Each file's
+	// descriptor will be included in proto_file, below.
+	FileToGenerate []string `protobuf:"bytes,1,rep,name=file_to_generate,json=fileToGenerate" json:"file_to_generate,omitempty"`
+	// The generator parameter passed on the command-line.
+	Parameter *string `protobuf:"bytes,2,opt,name=parameter" json:"parameter,omitempty"`
+	// FileDescriptorProtos for all files in files_to_generate and everything
+	// they import.  The files will appear in topological order, so each file
+	// appears before any file that imports it.
+	//
+	// protoc guarantees that all proto_files will be written after
+	// the fields above, even though this is not technically guaranteed by the
+	// protobuf wire format.  This theoretically could allow a plugin to stream
+	// in the FileDescriptorProtos and handle them one by one rather than read
+	// the entire set into memory at once.  However, as of this writing, this
+	// is not similarly optimized on protoc's end -- it will store all fields in
+	// memory at once before sending them to the plugin.
+	ProtoFile        []*google_protobuf.FileDescriptorProto `protobuf:"bytes,15,rep,name=proto_file,json=protoFile" json:"proto_file,omitempty"`
+	XXX_unrecognized []byte                                 `json:"-"`
+}
+
+func (m *CodeGeneratorRequest) Reset()                    { *m = CodeGeneratorRequest{} }
+func (m *CodeGeneratorRequest) String() string            { return proto.CompactTextString(m) }
+func (*CodeGeneratorRequest) ProtoMessage()               {}
+func (*CodeGeneratorRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+func (m *CodeGeneratorRequest) GetFileToGenerate() []string {
+	if m != nil {
+		return m.FileToGenerate
+	}
+	return nil
+}
+
+func (m *CodeGeneratorRequest) GetParameter() string {
+	if m != nil && m.Parameter != nil {
+		return *m.Parameter
+	}
+	return ""
+}
+
+func (m *CodeGeneratorRequest) GetProtoFile() []*google_protobuf.FileDescriptorProto {
+	if m != nil {
+		return m.ProtoFile
+	}
+	return nil
+}
+
+// The plugin writes an encoded CodeGeneratorResponse to stdout.
+type CodeGeneratorResponse struct {
+	// Error message.  If non-empty, code generation failed.  The plugin process
+	// should exit with status code zero even if it reports an error in this way.
+	//
+	// This should be used to indicate errors in .proto files which prevent the
+	// code generator from generating correct code.  Errors which indicate a
+	// problem in protoc itself -- such as the input CodeGeneratorRequest being
+	// unparseable -- should be reported by writing a message to stderr and
+	// exiting with a non-zero status code.
+	Error            *string                       `protobuf:"bytes,1,opt,name=error" json:"error,omitempty"`
+	File             []*CodeGeneratorResponse_File `protobuf:"bytes,15,rep,name=file" json:"file,omitempty"`
+	XXX_unrecognized []byte                        `json:"-"`
+}
+
+func (m *CodeGeneratorResponse) Reset()                    { *m = CodeGeneratorResponse{} }
+func (m *CodeGeneratorResponse) String() string            { return proto.CompactTextString(m) }
+func (*CodeGeneratorResponse) ProtoMessage()               {}
+func (*CodeGeneratorResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+func (m *CodeGeneratorResponse) GetError() string {
+	if m != nil && m.Error != nil {
+		return *m.Error
+	}
+	return ""
+}
+
+func (m *CodeGeneratorResponse) GetFile() []*CodeGeneratorResponse_File {
+	if m != nil {
+		return m.File
+	}
+	return nil
+}
+
+// Represents a single generated file.
+type CodeGeneratorResponse_File struct {
+	// The file name, relative to the output directory.  The name must not
+	// contain "." or ".." components and must be relative, not be absolute (so,
+	// the file cannot lie outside the output directory).  "/" must be used as
+	// the path separator, not "\".
+	//
+	// If the name is omitted, the content will be appended to the previous
+	// file.  This allows the generator to break large files into small chunks,
+	// and allows the generated text to be streamed back to protoc so that large
+	// files need not reside completely in memory at one time.  Note that as of
+	// this writing protoc does not optimize for this -- it will read the entire
+	// CodeGeneratorResponse before writing files to disk.
+	Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	// If non-empty, indicates that the named file should already exist, and the
+	// content here is to be inserted into that file at a defined insertion
+	// point.  This feature allows a code generator to extend the output
+	// produced by another code generator.  The original generator may provide
+	// insertion points by placing special annotations in the file that look
+	// like:
+	//   @@protoc_insertion_point(NAME)
+	// The annotation can have arbitrary text before and after it on the line,
+	// which allows it to be placed in a comment.  NAME should be replaced with
+	// an identifier naming the point -- this is what other generators will use
+	// as the insertion_point.  Code inserted at this point will be placed
+	// immediately above the line containing the insertion point (thus multiple
+	// insertions to the same point will come out in the order they were added).
+	// The double-@ is intended to make it unlikely that the generated code
+	// could contain things that look like insertion points by accident.
+	//
+	// For example, the C++ code generator places the following line in the
+	// .pb.h files that it generates:
+	//   // @@protoc_insertion_point(namespace_scope)
+	// This line appears within the scope of the file's package namespace, but
+	// outside of any particular class.  Another plugin can then specify the
+	// insertion_point "namespace_scope" to generate additional classes or
+	// other declarations that should be placed in this scope.
+	//
+	// Note that if the line containing the insertion point begins with
+	// whitespace, the same whitespace will be added to every line of the
+	// inserted text.  This is useful for languages like Python, where
+	// indentation matters.  In these languages, the insertion point comment
+	// should be indented the same amount as any inserted code will need to be
+	// in order to work correctly in that context.
+	//
+	// The code generator that generates the initial file and the one which
+	// inserts into it must both run as part of a single invocation of protoc.
+	// Code generators are executed in the order in which they appear on the
+	// command line.
+	//
+	// If |insertion_point| is present, |name| must also be present.
+	InsertionPoint *string `protobuf:"bytes,2,opt,name=insertion_point,json=insertionPoint" json:"insertion_point,omitempty"`
+	// The file contents.
+	Content          *string `protobuf:"bytes,15,opt,name=content" json:"content,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *CodeGeneratorResponse_File) Reset()                    { *m = CodeGeneratorResponse_File{} }
+func (m *CodeGeneratorResponse_File) String() string            { return proto.CompactTextString(m) }
+func (*CodeGeneratorResponse_File) ProtoMessage()               {}
+func (*CodeGeneratorResponse_File) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1, 0} }
+
+func (m *CodeGeneratorResponse_File) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *CodeGeneratorResponse_File) GetInsertionPoint() string {
+	if m != nil && m.InsertionPoint != nil {
+		return *m.InsertionPoint
+	}
+	return ""
+}
+
+func (m *CodeGeneratorResponse_File) GetContent() string {
+	if m != nil && m.Content != nil {
+		return *m.Content
+	}
+	return ""
+}
+
+func init() {
+	proto.RegisterType((*CodeGeneratorRequest)(nil), "google.protobuf.compiler.CodeGeneratorRequest")
+	proto.RegisterType((*CodeGeneratorResponse)(nil), "google.protobuf.compiler.CodeGeneratorResponse")
+	proto.RegisterType((*CodeGeneratorResponse_File)(nil), "google.protobuf.compiler.CodeGeneratorResponse.File")
+}
+
+func init() { proto.RegisterFile("google/protobuf/compiler/plugin.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
+	// 310 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x74, 0x51, 0xc1, 0x4a, 0xc3, 0x40,
+	0x10, 0x25, 0xb6, 0x22, 0x19, 0xa5, 0x95, 0xa5, 0xc2, 0x52, 0x7a, 0x08, 0x45, 0x31, 0xa7, 0x14,
+	0x44, 0xf0, 0xde, 0x8a, 0x7a, 0x2c, 0xc1, 0x93, 0x20, 0x21, 0xa6, 0xd3, 0xb0, 0x90, 0xec, 0xac,
+	0xb3, 0xdb, 0x2f, 0xf2, 0x9f, 0xfc, 0x1e, 0xd9, 0x4d, 0x5b, 0xa5, 0xd8, 0xdb, 0xce, 0x7b, 0x6f,
+	0xe6, 0xbd, 0x9d, 0x81, 0x9b, 0x9a, 0xa8, 0x6e, 0x70, 0x66, 0x98, 0x1c, 0x7d, 0x6c, 0xd6, 0xb3,
+	0x8a, 0x5a, 0xa3, 0x1a, 0xe4, 0x99, 0x69, 0x36, 0xb5, 0xd2, 0x59, 0x20, 0x84, 0xec, 0x64, 0xd9,
+	0x4e, 0x96, 0xed, 0x64, 0xe3, 0xe4, 0x70, 0xc0, 0x0a, 0x6d, 0xc5, 0xca, 0x38, 0xe2, 0x4e, 0x3d,
+	0xfd, 0x8a, 0x60, 0xb4, 0xa0, 0x15, 0x3e, 0xa3, 0x46, 0x2e, 0x1d, 0x71, 0x8e, 0x9f, 0x1b, 0xb4,
+	0x4e, 0xa4, 0x70, 0xb9, 0x56, 0x0d, 0x16, 0x8e, 0x8a, 0xba, 0xe3, 0x50, 0x46, 0x49, 0x2f, 0x8d,
+	0xf3, 0x81, 0xc7, 0x5f, 0x69, 0xdb, 0x81, 0x62, 0x02, 0xb1, 0x29, 0xb9, 0x6c, 0xd1, 0x21, 0xcb,
+	0x93, 0x24, 0x4a, 0xe3, 0xfc, 0x17, 0x10, 0x0b, 0x80, 0xe0, 0x54, 0xf8, 0x2e, 0x39, 0x4c, 0x7a,
+	0xe9, 0xf9, 0xdd, 0x75, 0x76, 0x98, 0xf8, 0x49, 0x35, 0xf8, 0xb8, 0xcf, 0xb6, 0xf4, 0x70, 0x1e,
+	0x07, 0xd6, 0x33, 0xd3, 0xef, 0x08, 0xae, 0x0e, 0x52, 0x5a, 0x43, 0xda, 0xa2, 0x18, 0xc1, 0x29,
+	0x32, 0x13, 0xcb, 0x28, 0x18, 0x77, 0x85, 0x78, 0x81, 0xfe, 0x1f, 0xbb, 0xfb, 0xec, 0xd8, 0x82,
+	0xb2, 0x7f, 0x87, 0x86, 0x34, 0x79, 0x98, 0x30, 0x7e, 0x87, 0xbe, 0xaf, 0x84, 0x80, 0xbe, 0x2e,
+	0x5b, 0xdc, 0xda, 0x84, 0xb7, 0xb8, 0x85, 0xa1, 0xd2, 0x16, 0xd9, 0x29, 0xd2, 0x85, 0x21, 0xa5,
+	0xdd, 0xf6, 0xfb, 0x83, 0x3d, 0xbc, 0xf4, 0xa8, 0x90, 0x70, 0x56, 0x91, 0x76, 0xa8, 0x9d, 0x1c,
+	0x06, 0xc1, 0xae, 0x9c, 0x3f, 0xc0, 0xa4, 0xa2, 0xf6, 0x68, 0xbe, 0xf9, 0xc5, 0x32, 0x1c, 0x3a,
+	0x2c, 0xc4, 0xbe, 0xc5, 0xdd, 0xd9, 0x8b, 0x9a, 0x7e, 0x02, 0x00, 0x00, 0xff, 0xff, 0x83, 0x7b,
+	0x5c, 0x7c, 0x1b, 0x02, 0x00, 0x00,
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/plugin/plugin.pb.golden b/vendor/github.com/golang/protobuf/protoc-gen-go/plugin/plugin.pb.golden
new file mode 100644
index 000000000..8953d0ff8
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/plugin/plugin.pb.golden
@@ -0,0 +1,83 @@
+// Code generated by protoc-gen-go.
+// source: google/protobuf/compiler/plugin.proto
+// DO NOT EDIT!
+
+package google_protobuf_compiler
+
+import proto "github.com/golang/protobuf/proto"
+import "math"
+import google_protobuf "github.com/golang/protobuf/protoc-gen-go/descriptor"
+
+// Reference proto and math imports to suppress error if they are not otherwise used.
+var _ = proto.GetString
+var _ = math.Inf
+
+type CodeGeneratorRequest struct {
+	FileToGenerate   []string                               `protobuf:"bytes,1,rep,name=file_to_generate" json:"file_to_generate,omitempty"`
+	Parameter        *string                                `protobuf:"bytes,2,opt,name=parameter" json:"parameter,omitempty"`
+	ProtoFile        []*google_protobuf.FileDescriptorProto `protobuf:"bytes,15,rep,name=proto_file" json:"proto_file,omitempty"`
+	XXX_unrecognized []byte                                 `json:"-"`
+}
+
+func (this *CodeGeneratorRequest) Reset()         { *this = CodeGeneratorRequest{} }
+func (this *CodeGeneratorRequest) String() string { return proto.CompactTextString(this) }
+func (*CodeGeneratorRequest) ProtoMessage()       {}
+
+func (this *CodeGeneratorRequest) GetParameter() string {
+	if this != nil && this.Parameter != nil {
+		return *this.Parameter
+	}
+	return ""
+}
+
+type CodeGeneratorResponse struct {
+	Error            *string                       `protobuf:"bytes,1,opt,name=error" json:"error,omitempty"`
+	File             []*CodeGeneratorResponse_File `protobuf:"bytes,15,rep,name=file" json:"file,omitempty"`
+	XXX_unrecognized []byte                        `json:"-"`
+}
+
+func (this *CodeGeneratorResponse) Reset()         { *this = CodeGeneratorResponse{} }
+func (this *CodeGeneratorResponse) String() string { return proto.CompactTextString(this) }
+func (*CodeGeneratorResponse) ProtoMessage()       {}
+
+func (this *CodeGeneratorResponse) GetError() string {
+	if this != nil && this.Error != nil {
+		return *this.Error
+	}
+	return ""
+}
+
+type CodeGeneratorResponse_File struct {
+	Name             *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	InsertionPoint   *string `protobuf:"bytes,2,opt,name=insertion_point" json:"insertion_point,omitempty"`
+	Content          *string `protobuf:"bytes,15,opt,name=content" json:"content,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (this *CodeGeneratorResponse_File) Reset()         { *this = CodeGeneratorResponse_File{} }
+func (this *CodeGeneratorResponse_File) String() string { return proto.CompactTextString(this) }
+func (*CodeGeneratorResponse_File) ProtoMessage()       {}
+
+func (this *CodeGeneratorResponse_File) GetName() string {
+	if this != nil && this.Name != nil {
+		return *this.Name
+	}
+	return ""
+}
+
+func (this *CodeGeneratorResponse_File) GetInsertionPoint() string {
+	if this != nil && this.InsertionPoint != nil {
+		return *this.InsertionPoint
+	}
+	return ""
+}
+
+func (this *CodeGeneratorResponse_File) GetContent() string {
+	if this != nil && this.Content != nil {
+		return *this.Content
+	}
+	return ""
+}
+
+func init() {
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/Makefile b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/Makefile
new file mode 100644
index 000000000..b1ac45c77
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/Makefile
@@ -0,0 +1,73 @@
+# Go support for Protocol Buffers - Google's data interchange format
+#
+# Copyright 2010 The Go Authors.  All rights reserved.
+# https://github.com/golang/protobuf
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+all:
+	@echo run make test
+
+include ../../Make.protobuf
+
+test:	golden testbuild
+
+#test:	golden testbuild extension_test
+#	./extension_test
+#	@echo PASS
+
+my_test/test.pb.go: my_test/test.proto
+	protoc --go_out=Mmulti/multi1.proto=github.com/golang/protobuf/protoc-gen-go/testdata/multi:. $<
+
+golden:
+	make -B my_test/test.pb.go
+	sed -i '/return.*fileDescriptor/d' my_test/test.pb.go
+	sed -i '/^var fileDescriptor/,/^}/d' my_test/test.pb.go
+	sed -i '/proto.RegisterFile.*fileDescriptor/d' my_test/test.pb.go
+	gofmt -w my_test/test.pb.go
+	diff -w my_test/test.pb.go my_test/test.pb.go.golden
+
+nuke:	clean
+
+testbuild:	regenerate
+	go test
+
+regenerate:
+	# Invoke protoc once to generate three independent .pb.go files in the same package.
+	protoc --go_out=. multi/multi1.proto multi/multi2.proto multi/multi3.proto
+
+#extension_test:	extension_test.$O
+#	$(LD) -L. -o $@ $<
+
+#multi.a: multi3.pb.$O multi2.pb.$O multi1.pb.$O
+#	rm -f multi.a
+#	$(QUOTED_GOBIN)/gopack grc $@ $<
+
+#test.pb.go:	imp.pb.go
+#multi1.pb.go:	multi2.pb.go multi3.pb.go
+#main.$O: imp.pb.$O test.pb.$O multi.a
+#extension_test.$O: extension_base.pb.$O extension_extra.pb.$O extension_user.pb.$O
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/extension_base.proto b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/extension_base.proto
new file mode 100644
index 000000000..94acfc1bc
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/extension_base.proto
@@ -0,0 +1,46 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto2";
+
+package extension_base;
+
+message BaseMessage {
+  optional int32 height = 1;
+  extensions 4 to 9;
+  extensions 16 to max;
+}
+
+// Another message that may be extended, using message_set_wire_format.
+message OldStyleMessage {
+  option message_set_wire_format = true;
+  extensions 100 to max;
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/extension_extra.proto b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/extension_extra.proto
new file mode 100644
index 000000000..fca7f600c
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/extension_extra.proto
@@ -0,0 +1,38 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2011 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto2";
+
+package extension_extra;
+
+message ExtraMessage {
+  optional int32 width = 1;
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/extension_test.go b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/extension_test.go
new file mode 100644
index 000000000..86e9c118a
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/extension_test.go
@@ -0,0 +1,210 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Test that we can use protocol buffers that use extensions.
+
+package testdata
+
+/*
+
+import (
+	"bytes"
+	"regexp"
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+	base "extension_base.pb"
+	user "extension_user.pb"
+)
+
+func TestSingleFieldExtension(t *testing.T) {
+	bm := &base.BaseMessage{
+		Height: proto.Int32(178),
+	}
+
+	// Use extension within scope of another type.
+	vol := proto.Uint32(11)
+	err := proto.SetExtension(bm, user.E_LoudMessage_Volume, vol)
+	if err != nil {
+		t.Fatal("Failed setting extension:", err)
+	}
+	buf, err := proto.Marshal(bm)
+	if err != nil {
+		t.Fatal("Failed encoding message with extension:", err)
+	}
+	bm_new := new(base.BaseMessage)
+	if err := proto.Unmarshal(buf, bm_new); err != nil {
+		t.Fatal("Failed decoding message with extension:", err)
+	}
+	if !proto.HasExtension(bm_new, user.E_LoudMessage_Volume) {
+		t.Fatal("Decoded message didn't contain extension.")
+	}
+	vol_out, err := proto.GetExtension(bm_new, user.E_LoudMessage_Volume)
+	if err != nil {
+		t.Fatal("Failed getting extension:", err)
+	}
+	if v := vol_out.(*uint32); *v != *vol {
+		t.Errorf("vol_out = %v, expected %v", *v, *vol)
+	}
+	proto.ClearExtension(bm_new, user.E_LoudMessage_Volume)
+	if proto.HasExtension(bm_new, user.E_LoudMessage_Volume) {
+		t.Fatal("Failed clearing extension.")
+	}
+}
+
+func TestMessageExtension(t *testing.T) {
+	bm := &base.BaseMessage{
+		Height: proto.Int32(179),
+	}
+
+	// Use extension that is itself a message.
+	um := &user.UserMessage{
+		Name: proto.String("Dave"),
+		Rank: proto.String("Major"),
+	}
+	err := proto.SetExtension(bm, user.E_LoginMessage_UserMessage, um)
+	if err != nil {
+		t.Fatal("Failed setting extension:", err)
+	}
+	buf, err := proto.Marshal(bm)
+	if err != nil {
+		t.Fatal("Failed encoding message with extension:", err)
+	}
+	bm_new := new(base.BaseMessage)
+	if err := proto.Unmarshal(buf, bm_new); err != nil {
+		t.Fatal("Failed decoding message with extension:", err)
+	}
+	if !proto.HasExtension(bm_new, user.E_LoginMessage_UserMessage) {
+		t.Fatal("Decoded message didn't contain extension.")
+	}
+	um_out, err := proto.GetExtension(bm_new, user.E_LoginMessage_UserMessage)
+	if err != nil {
+		t.Fatal("Failed getting extension:", err)
+	}
+	if n := um_out.(*user.UserMessage).Name; *n != *um.Name {
+		t.Errorf("um_out.Name = %q, expected %q", *n, *um.Name)
+	}
+	if r := um_out.(*user.UserMessage).Rank; *r != *um.Rank {
+		t.Errorf("um_out.Rank = %q, expected %q", *r, *um.Rank)
+	}
+	proto.ClearExtension(bm_new, user.E_LoginMessage_UserMessage)
+	if proto.HasExtension(bm_new, user.E_LoginMessage_UserMessage) {
+		t.Fatal("Failed clearing extension.")
+	}
+}
+
+func TestTopLevelExtension(t *testing.T) {
+	bm := &base.BaseMessage{
+		Height: proto.Int32(179),
+	}
+
+	width := proto.Int32(17)
+	err := proto.SetExtension(bm, user.E_Width, width)
+	if err != nil {
+		t.Fatal("Failed setting extension:", err)
+	}
+	buf, err := proto.Marshal(bm)
+	if err != nil {
+		t.Fatal("Failed encoding message with extension:", err)
+	}
+	bm_new := new(base.BaseMessage)
+	if err := proto.Unmarshal(buf, bm_new); err != nil {
+		t.Fatal("Failed decoding message with extension:", err)
+	}
+	if !proto.HasExtension(bm_new, user.E_Width) {
+		t.Fatal("Decoded message didn't contain extension.")
+	}
+	width_out, err := proto.GetExtension(bm_new, user.E_Width)
+	if err != nil {
+		t.Fatal("Failed getting extension:", err)
+	}
+	if w := width_out.(*int32); *w != *width {
+		t.Errorf("width_out = %v, expected %v", *w, *width)
+	}
+	proto.ClearExtension(bm_new, user.E_Width)
+	if proto.HasExtension(bm_new, user.E_Width) {
+		t.Fatal("Failed clearing extension.")
+	}
+}
+
+func TestMessageSetWireFormat(t *testing.T) {
+	osm := new(base.OldStyleMessage)
+	osp := &user.OldStyleParcel{
+		Name:   proto.String("Dave"),
+		Height: proto.Int32(178),
+	}
+
+	err := proto.SetExtension(osm, user.E_OldStyleParcel_MessageSetExtension, osp)
+	if err != nil {
+		t.Fatal("Failed setting extension:", err)
+	}
+
+	buf, err := proto.Marshal(osm)
+	if err != nil {
+		t.Fatal("Failed encoding message:", err)
+	}
+
+	// Data generated from Python implementation.
+	expected := []byte{
+		11, 16, 209, 15, 26, 9, 10, 4, 68, 97, 118, 101, 16, 178, 1, 12,
+	}
+
+	if !bytes.Equal(expected, buf) {
+		t.Errorf("Encoding mismatch.\nwant %+v\n got %+v", expected, buf)
+	}
+
+	// Check that it is restored correctly.
+	osm = new(base.OldStyleMessage)
+	if err := proto.Unmarshal(buf, osm); err != nil {
+		t.Fatal("Failed decoding message:", err)
+	}
+	osp_out, err := proto.GetExtension(osm, user.E_OldStyleParcel_MessageSetExtension)
+	if err != nil {
+		t.Fatal("Failed getting extension:", err)
+	}
+	osp = osp_out.(*user.OldStyleParcel)
+	if *osp.Name != "Dave" || *osp.Height != 178 {
+		t.Errorf("Retrieved extension from decoded message is not correct: %+v", osp)
+	}
+}
+
+func main() {
+	// simpler than rigging up gotest
+	testing.Main(regexp.MatchString, []testing.InternalTest{
+		{"TestSingleFieldExtension", TestSingleFieldExtension},
+		{"TestMessageExtension", TestMessageExtension},
+		{"TestTopLevelExtension", TestTopLevelExtension},
+	},
+		[]testing.InternalBenchmark{},
+		[]testing.InternalExample{})
+}
+
+*/
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/extension_user.proto b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/extension_user.proto
new file mode 100644
index 000000000..ff65873dd
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/extension_user.proto
@@ -0,0 +1,100 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto2";
+
+import "extension_base.proto";
+import "extension_extra.proto";
+
+package extension_user;
+
+message UserMessage {
+  optional string name = 1;
+  optional string rank = 2;
+}
+
+// Extend with a message
+extend extension_base.BaseMessage {
+  optional UserMessage user_message = 5;
+}
+
+// Extend with a foreign message
+extend extension_base.BaseMessage {
+  optional extension_extra.ExtraMessage extra_message = 9;
+}
+
+// Extend with some primitive types
+extend extension_base.BaseMessage {
+  optional int32 width = 6;
+  optional int64 area = 7;
+}
+
+// Extend inside the scope of another type
+message LoudMessage {
+  extend extension_base.BaseMessage {
+    optional uint32 volume = 8;
+  }
+  extensions 100 to max;
+}
+
+// Extend inside the scope of another type, using a message.
+message LoginMessage {
+  extend extension_base.BaseMessage {
+    optional UserMessage user_message = 16;
+  }
+}
+
+// Extend with a repeated field
+extend extension_base.BaseMessage {
+  repeated Detail detail = 17;
+}
+
+message Detail {
+  optional string color = 1;
+}
+
+// An extension of an extension
+message Announcement {
+  optional string words = 1;
+  extend LoudMessage {
+    optional Announcement loud_ext = 100;
+  }
+}
+
+// Something that can be put in a message set.
+message OldStyleParcel {
+  extend extension_base.OldStyleMessage {
+    optional OldStyleParcel message_set_extension = 2001;
+  }
+
+  required string name = 1;
+  optional int32 height = 2;
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/grpc.proto b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/grpc.proto
new file mode 100644
index 000000000..b8bc41acd
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/grpc.proto
@@ -0,0 +1,59 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2015 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto3";
+
+package grpc.testing;
+
+message SimpleRequest {
+}
+
+message SimpleResponse {
+}
+
+message StreamMsg {
+}
+
+message StreamMsg2 {
+}
+
+service Test {
+  rpc UnaryCall(SimpleRequest) returns (SimpleResponse);
+
+  // This RPC streams from the server only.
+  rpc Downstream(SimpleRequest) returns (stream StreamMsg);
+
+  // This RPC streams from the client.
+  rpc Upstream(stream StreamMsg) returns (SimpleResponse);
+
+  // This one streams in both directions.
+  rpc Bidi(stream StreamMsg) returns (stream StreamMsg2);
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/imp.pb.go.golden b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/imp.pb.go.golden
new file mode 100644
index 000000000..784a4f865
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/imp.pb.go.golden
@@ -0,0 +1,113 @@
+// Code generated by protoc-gen-go.
+// source: imp.proto
+// DO NOT EDIT!
+
+package imp
+
+import proto "github.com/golang/protobuf/proto"
+import "math"
+import "os"
+import imp1 "imp2.pb"
+
+// Reference proto & math imports to suppress error if they are not otherwise used.
+var _ = proto.GetString
+var _ = math.Inf
+
+// Types from public import imp2.proto
+type PubliclyImportedMessage imp1.PubliclyImportedMessage
+
+func (this *PubliclyImportedMessage) Reset() { (*imp1.PubliclyImportedMessage)(this).Reset() }
+func (this *PubliclyImportedMessage) String() string {
+	return (*imp1.PubliclyImportedMessage)(this).String()
+}
+
+// PubliclyImportedMessage from public import imp.proto
+
+type ImportedMessage_Owner int32
+
+const (
+	ImportedMessage_DAVE ImportedMessage_Owner = 1
+	ImportedMessage_MIKE ImportedMessage_Owner = 2
+)
+
+var ImportedMessage_Owner_name = map[int32]string{
+	1: "DAVE",
+	2: "MIKE",
+}
+var ImportedMessage_Owner_value = map[string]int32{
+	"DAVE": 1,
+	"MIKE": 2,
+}
+
+// NewImportedMessage_Owner is deprecated. Use x.Enum() instead.
+func NewImportedMessage_Owner(x ImportedMessage_Owner) *ImportedMessage_Owner {
+	e := ImportedMessage_Owner(x)
+	return &e
+}
+func (x ImportedMessage_Owner) Enum() *ImportedMessage_Owner {
+	p := new(ImportedMessage_Owner)
+	*p = x
+	return p
+}
+func (x ImportedMessage_Owner) String() string {
+	return proto.EnumName(ImportedMessage_Owner_name, int32(x))
+}
+
+type ImportedMessage struct {
+	Field            *int64           `protobuf:"varint,1,req,name=field" json:"field,omitempty"`
+	XXX_extensions   map[int32][]byte `json:",omitempty"`
+	XXX_unrecognized []byte           `json:",omitempty"`
+}
+
+func (this *ImportedMessage) Reset()         { *this = ImportedMessage{} }
+func (this *ImportedMessage) String() string { return proto.CompactTextString(this) }
+
+var extRange_ImportedMessage = []proto.ExtensionRange{
+	proto.ExtensionRange{90, 100},
+}
+
+func (*ImportedMessage) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_ImportedMessage
+}
+func (this *ImportedMessage) ExtensionMap() map[int32][]byte {
+	if this.XXX_extensions == nil {
+		this.XXX_extensions = make(map[int32][]byte)
+	}
+	return this.XXX_extensions
+}
+
+type ImportedExtendable struct {
+	XXX_extensions   map[int32][]byte `json:",omitempty"`
+	XXX_unrecognized []byte           `json:",omitempty"`
+}
+
+func (this *ImportedExtendable) Reset()         { *this = ImportedExtendable{} }
+func (this *ImportedExtendable) String() string { return proto.CompactTextString(this) }
+
+func (this *ImportedExtendable) Marshal() ([]byte, error) {
+	return proto.MarshalMessageSet(this.ExtensionMap())
+}
+func (this *ImportedExtendable) Unmarshal(buf []byte) error {
+	return proto.UnmarshalMessageSet(buf, this.ExtensionMap())
+}
+// ensure ImportedExtendable satisfies proto.Marshaler and proto.Unmarshaler
+var _ proto.Marshaler = (*ImportedExtendable)(nil)
+var _ proto.Unmarshaler = (*ImportedExtendable)(nil)
+
+var extRange_ImportedExtendable = []proto.ExtensionRange{
+	proto.ExtensionRange{100, 536870911},
+}
+
+func (*ImportedExtendable) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_ImportedExtendable
+}
+func (this *ImportedExtendable) ExtensionMap() map[int32][]byte {
+	if this.XXX_extensions == nil {
+		this.XXX_extensions = make(map[int32][]byte)
+	}
+	return this.XXX_extensions
+}
+
+func init() {
+	proto.RegisterEnum("imp.ImportedMessage_Owner", ImportedMessage_Owner_name, ImportedMessage_Owner_value)
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/imp.proto b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/imp.proto
new file mode 100644
index 000000000..156e078d1
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/imp.proto
@@ -0,0 +1,70 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto2";
+
+package imp;
+
+import "imp2.proto";
+import "imp3.proto";
+
+message ImportedMessage {
+  required int64 field = 1;
+
+  // The forwarded getters for these fields are fiddly to get right.
+  optional ImportedMessage2 local_msg = 2;
+  optional ForeignImportedMessage foreign_msg = 3;  // in imp3.proto
+  optional Owner enum_field = 4;
+  oneof union {
+    int32 state = 9;
+  }
+
+  repeated string name = 5;
+  repeated Owner boss = 6;
+  repeated ImportedMessage2 memo = 7;
+
+  map<string, ImportedMessage2> msg_map = 8;
+
+  enum Owner {
+    DAVE = 1;
+    MIKE = 2;
+  }
+
+  extensions 90 to 100;
+}
+
+message ImportedMessage2 {
+}
+
+message ImportedExtendable {
+  option message_set_wire_format = true;
+  extensions 100 to max;
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/imp2.proto b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/imp2.proto
new file mode 100644
index 000000000..3bb0632b2
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/imp2.proto
@@ -0,0 +1,43 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2011 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto2";
+
+package imp;
+
+message PubliclyImportedMessage {
+  optional int64 field = 1;
+}
+
+enum PubliclyImportedEnum {
+  GLASSES = 1;
+  HAIR = 2;
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/imp3.proto b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/imp3.proto
new file mode 100644
index 000000000..58fc7598b
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/imp3.proto
@@ -0,0 +1,38 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2012 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto2";
+
+package imp;
+
+message ForeignImportedMessage {
+  optional string tuber = 1;
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/main_test.go b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/main_test.go
new file mode 100644
index 000000000..f9b5ccf20
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/main_test.go
@@ -0,0 +1,46 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// A simple binary to link together the protocol buffers in this test.
+
+package testdata
+
+import (
+	"testing"
+
+	mytestpb "./my_test"
+	multipb "github.com/golang/protobuf/protoc-gen-go/testdata/multi"
+)
+
+func TestLink(t *testing.T) {
+	_ = &multipb.Multi1{}
+	_ = &mytestpb.Request{}
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/multi/multi1.proto b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/multi/multi1.proto
new file mode 100644
index 000000000..0da6e0af4
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/multi/multi1.proto
@@ -0,0 +1,44 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto2";
+
+import "multi/multi2.proto";
+import "multi/multi3.proto";
+
+package multitest;
+
+message Multi1 {
+  required Multi2 multi2 = 1;
+  optional Multi2.Color color = 2;
+  optional Multi3.HatType hat_type = 3;
+}
+
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/multi/multi2.proto b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/multi/multi2.proto
new file mode 100644
index 000000000..e6bfc71b3
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/multi/multi2.proto
@@ -0,0 +1,46 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto2";
+
+package multitest;
+
+message Multi2 {
+  required int32 required_value = 1;
+
+  enum Color {
+    BLUE = 1;
+    GREEN = 2;
+    RED = 3;
+  };
+  optional Color color = 2;
+}
+
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/multi/multi3.proto b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/multi/multi3.proto
new file mode 100644
index 000000000..146c255bd
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/multi/multi3.proto
@@ -0,0 +1,43 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto2";
+
+package multitest;
+
+message Multi3 {
+  enum HatType {
+    FEDORA = 1;
+    FEZ = 2;
+  };
+  optional HatType hat_type = 1;
+}
+
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/my_test/test.pb.go b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/my_test/test.pb.go
new file mode 100644
index 000000000..9ec3e1292
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/my_test/test.pb.go
@@ -0,0 +1,866 @@
+// Code generated by protoc-gen-go.
+// source: my_test/test.proto
+// DO NOT EDIT!
+
+/*
+Package my_test is a generated protocol buffer package.
+
+This package holds interesting messages.
+
+It is generated from these files:
+	my_test/test.proto
+
+It has these top-level messages:
+	Request
+	Reply
+	OtherBase
+	ReplyExtensions
+	OtherReplyExtensions
+	OldReply
+	Communique
+*/
+package my_test
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+import _ "github.com/golang/protobuf/protoc-gen-go/testdata/multi"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+type HatType int32
+
+const (
+	// deliberately skipping 0
+	HatType_FEDORA HatType = 1
+	HatType_FEZ    HatType = 2
+)
+
+var HatType_name = map[int32]string{
+	1: "FEDORA",
+	2: "FEZ",
+}
+var HatType_value = map[string]int32{
+	"FEDORA": 1,
+	"FEZ":    2,
+}
+
+func (x HatType) Enum() *HatType {
+	p := new(HatType)
+	*p = x
+	return p
+}
+func (x HatType) String() string {
+	return proto.EnumName(HatType_name, int32(x))
+}
+func (x *HatType) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(HatType_value, data, "HatType")
+	if err != nil {
+		return err
+	}
+	*x = HatType(value)
+	return nil
+}
+
+// This enum represents days of the week.
+type Days int32
+
+const (
+	Days_MONDAY  Days = 1
+	Days_TUESDAY Days = 2
+	Days_LUNDI   Days = 1
+)
+
+var Days_name = map[int32]string{
+	1: "MONDAY",
+	2: "TUESDAY",
+	// Duplicate value: 1: "LUNDI",
+}
+var Days_value = map[string]int32{
+	"MONDAY":  1,
+	"TUESDAY": 2,
+	"LUNDI":   1,
+}
+
+func (x Days) Enum() *Days {
+	p := new(Days)
+	*p = x
+	return p
+}
+func (x Days) String() string {
+	return proto.EnumName(Days_name, int32(x))
+}
+func (x *Days) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(Days_value, data, "Days")
+	if err != nil {
+		return err
+	}
+	*x = Days(value)
+	return nil
+}
+
+type Request_Color int32
+
+const (
+	Request_RED   Request_Color = 0
+	Request_GREEN Request_Color = 1
+	Request_BLUE  Request_Color = 2
+)
+
+var Request_Color_name = map[int32]string{
+	0: "RED",
+	1: "GREEN",
+	2: "BLUE",
+}
+var Request_Color_value = map[string]int32{
+	"RED":   0,
+	"GREEN": 1,
+	"BLUE":  2,
+}
+
+func (x Request_Color) Enum() *Request_Color {
+	p := new(Request_Color)
+	*p = x
+	return p
+}
+func (x Request_Color) String() string {
+	return proto.EnumName(Request_Color_name, int32(x))
+}
+func (x *Request_Color) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(Request_Color_value, data, "Request_Color")
+	if err != nil {
+		return err
+	}
+	*x = Request_Color(value)
+	return nil
+}
+
+type Reply_Entry_Game int32
+
+const (
+	Reply_Entry_FOOTBALL Reply_Entry_Game = 1
+	Reply_Entry_TENNIS   Reply_Entry_Game = 2
+)
+
+var Reply_Entry_Game_name = map[int32]string{
+	1: "FOOTBALL",
+	2: "TENNIS",
+}
+var Reply_Entry_Game_value = map[string]int32{
+	"FOOTBALL": 1,
+	"TENNIS":   2,
+}
+
+func (x Reply_Entry_Game) Enum() *Reply_Entry_Game {
+	p := new(Reply_Entry_Game)
+	*p = x
+	return p
+}
+func (x Reply_Entry_Game) String() string {
+	return proto.EnumName(Reply_Entry_Game_name, int32(x))
+}
+func (x *Reply_Entry_Game) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(Reply_Entry_Game_value, data, "Reply_Entry_Game")
+	if err != nil {
+		return err
+	}
+	*x = Reply_Entry_Game(value)
+	return nil
+}
+
+// This is a message that might be sent somewhere.
+type Request struct {
+	Key []int64 `protobuf:"varint,1,rep,name=key" json:"key,omitempty"`
+	//  optional imp.ImportedMessage imported_message = 2;
+	Hue *Request_Color `protobuf:"varint,3,opt,name=hue,enum=my.test.Request_Color" json:"hue,omitempty"`
+	Hat *HatType       `protobuf:"varint,4,opt,name=hat,enum=my.test.HatType,def=1" json:"hat,omitempty"`
+	//  optional imp.ImportedMessage.Owner owner = 6;
+	Deadline  *float32           `protobuf:"fixed32,7,opt,name=deadline,def=inf" json:"deadline,omitempty"`
+	Somegroup *Request_SomeGroup `protobuf:"group,8,opt,name=SomeGroup,json=somegroup" json:"somegroup,omitempty"`
+	// This is a map field. It will generate map[int32]string.
+	NameMapping map[int32]string `protobuf:"bytes,14,rep,name=name_mapping,json=nameMapping" json:"name_mapping,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	// This is a map field whose value type is a message.
+	MsgMapping map[int64]*Reply `protobuf:"bytes,15,rep,name=msg_mapping,json=msgMapping" json:"msg_mapping,omitempty" protobuf_key:"zigzag64,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	Reset_     *int32           `protobuf:"varint,12,opt,name=reset" json:"reset,omitempty"`
+	// This field should not conflict with any getters.
+	GetKey_          *string `protobuf:"bytes,16,opt,name=get_key,json=getKey" json:"get_key,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *Request) Reset()         { *m = Request{} }
+func (m *Request) String() string { return proto.CompactTextString(m) }
+func (*Request) ProtoMessage()    {}
+
+const Default_Request_Hat HatType = HatType_FEDORA
+
+var Default_Request_Deadline float32 = float32(math.Inf(1))
+
+func (m *Request) GetKey() []int64 {
+	if m != nil {
+		return m.Key
+	}
+	return nil
+}
+
+func (m *Request) GetHue() Request_Color {
+	if m != nil && m.Hue != nil {
+		return *m.Hue
+	}
+	return Request_RED
+}
+
+func (m *Request) GetHat() HatType {
+	if m != nil && m.Hat != nil {
+		return *m.Hat
+	}
+	return Default_Request_Hat
+}
+
+func (m *Request) GetDeadline() float32 {
+	if m != nil && m.Deadline != nil {
+		return *m.Deadline
+	}
+	return Default_Request_Deadline
+}
+
+func (m *Request) GetSomegroup() *Request_SomeGroup {
+	if m != nil {
+		return m.Somegroup
+	}
+	return nil
+}
+
+func (m *Request) GetNameMapping() map[int32]string {
+	if m != nil {
+		return m.NameMapping
+	}
+	return nil
+}
+
+func (m *Request) GetMsgMapping() map[int64]*Reply {
+	if m != nil {
+		return m.MsgMapping
+	}
+	return nil
+}
+
+func (m *Request) GetReset_() int32 {
+	if m != nil && m.Reset_ != nil {
+		return *m.Reset_
+	}
+	return 0
+}
+
+func (m *Request) GetGetKey_() string {
+	if m != nil && m.GetKey_ != nil {
+		return *m.GetKey_
+	}
+	return ""
+}
+
+type Request_SomeGroup struct {
+	GroupField       *int32 `protobuf:"varint,9,opt,name=group_field,json=groupField" json:"group_field,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *Request_SomeGroup) Reset()         { *m = Request_SomeGroup{} }
+func (m *Request_SomeGroup) String() string { return proto.CompactTextString(m) }
+func (*Request_SomeGroup) ProtoMessage()    {}
+
+func (m *Request_SomeGroup) GetGroupField() int32 {
+	if m != nil && m.GroupField != nil {
+		return *m.GroupField
+	}
+	return 0
+}
+
+type Reply struct {
+	Found                        []*Reply_Entry `protobuf:"bytes,1,rep,name=found" json:"found,omitempty"`
+	CompactKeys                  []int32        `protobuf:"varint,2,rep,packed,name=compact_keys,json=compactKeys" json:"compact_keys,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *Reply) Reset()         { *m = Reply{} }
+func (m *Reply) String() string { return proto.CompactTextString(m) }
+func (*Reply) ProtoMessage()    {}
+
+var extRange_Reply = []proto.ExtensionRange{
+	{100, 536870911},
+}
+
+func (*Reply) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_Reply
+}
+
+func (m *Reply) GetFound() []*Reply_Entry {
+	if m != nil {
+		return m.Found
+	}
+	return nil
+}
+
+func (m *Reply) GetCompactKeys() []int32 {
+	if m != nil {
+		return m.CompactKeys
+	}
+	return nil
+}
+
+type Reply_Entry struct {
+	KeyThatNeeds_1234Camel_CasIng *int64 `protobuf:"varint,1,req,name=key_that_needs_1234camel_CasIng,json=keyThatNeeds1234camelCasIng" json:"key_that_needs_1234camel_CasIng,omitempty"`
+	Value                         *int64 `protobuf:"varint,2,opt,name=value,def=7" json:"value,omitempty"`
+	XMyFieldName_2                *int64 `protobuf:"varint,3,opt,name=_my_field_name_2,json=myFieldName2" json:"_my_field_name_2,omitempty"`
+	XXX_unrecognized              []byte `json:"-"`
+}
+
+func (m *Reply_Entry) Reset()         { *m = Reply_Entry{} }
+func (m *Reply_Entry) String() string { return proto.CompactTextString(m) }
+func (*Reply_Entry) ProtoMessage()    {}
+
+const Default_Reply_Entry_Value int64 = 7
+
+func (m *Reply_Entry) GetKeyThatNeeds_1234Camel_CasIng() int64 {
+	if m != nil && m.KeyThatNeeds_1234Camel_CasIng != nil {
+		return *m.KeyThatNeeds_1234Camel_CasIng
+	}
+	return 0
+}
+
+func (m *Reply_Entry) GetValue() int64 {
+	if m != nil && m.Value != nil {
+		return *m.Value
+	}
+	return Default_Reply_Entry_Value
+}
+
+func (m *Reply_Entry) GetXMyFieldName_2() int64 {
+	if m != nil && m.XMyFieldName_2 != nil {
+		return *m.XMyFieldName_2
+	}
+	return 0
+}
+
+type OtherBase struct {
+	Name                         *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *OtherBase) Reset()         { *m = OtherBase{} }
+func (m *OtherBase) String() string { return proto.CompactTextString(m) }
+func (*OtherBase) ProtoMessage()    {}
+
+var extRange_OtherBase = []proto.ExtensionRange{
+	{100, 536870911},
+}
+
+func (*OtherBase) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_OtherBase
+}
+
+func (m *OtherBase) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+type ReplyExtensions struct {
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *ReplyExtensions) Reset()         { *m = ReplyExtensions{} }
+func (m *ReplyExtensions) String() string { return proto.CompactTextString(m) }
+func (*ReplyExtensions) ProtoMessage()    {}
+
+var E_ReplyExtensions_Time = &proto.ExtensionDesc{
+	ExtendedType:  (*Reply)(nil),
+	ExtensionType: (*float64)(nil),
+	Field:         101,
+	Name:          "my.test.ReplyExtensions.time",
+	Tag:           "fixed64,101,opt,name=time",
+}
+
+var E_ReplyExtensions_Carrot = &proto.ExtensionDesc{
+	ExtendedType:  (*Reply)(nil),
+	ExtensionType: (*ReplyExtensions)(nil),
+	Field:         105,
+	Name:          "my.test.ReplyExtensions.carrot",
+	Tag:           "bytes,105,opt,name=carrot",
+}
+
+var E_ReplyExtensions_Donut = &proto.ExtensionDesc{
+	ExtendedType:  (*OtherBase)(nil),
+	ExtensionType: (*ReplyExtensions)(nil),
+	Field:         101,
+	Name:          "my.test.ReplyExtensions.donut",
+	Tag:           "bytes,101,opt,name=donut",
+}
+
+type OtherReplyExtensions struct {
+	Key              *int32 `protobuf:"varint,1,opt,name=key" json:"key,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *OtherReplyExtensions) Reset()         { *m = OtherReplyExtensions{} }
+func (m *OtherReplyExtensions) String() string { return proto.CompactTextString(m) }
+func (*OtherReplyExtensions) ProtoMessage()    {}
+
+func (m *OtherReplyExtensions) GetKey() int32 {
+	if m != nil && m.Key != nil {
+		return *m.Key
+	}
+	return 0
+}
+
+type OldReply struct {
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *OldReply) Reset()         { *m = OldReply{} }
+func (m *OldReply) String() string { return proto.CompactTextString(m) }
+func (*OldReply) ProtoMessage()    {}
+
+func (m *OldReply) Marshal() ([]byte, error) {
+	return proto.MarshalMessageSet(&m.XXX_InternalExtensions)
+}
+func (m *OldReply) Unmarshal(buf []byte) error {
+	return proto.UnmarshalMessageSet(buf, &m.XXX_InternalExtensions)
+}
+func (m *OldReply) MarshalJSON() ([]byte, error) {
+	return proto.MarshalMessageSetJSON(&m.XXX_InternalExtensions)
+}
+func (m *OldReply) UnmarshalJSON(buf []byte) error {
+	return proto.UnmarshalMessageSetJSON(buf, &m.XXX_InternalExtensions)
+}
+
+// ensure OldReply satisfies proto.Marshaler and proto.Unmarshaler
+var _ proto.Marshaler = (*OldReply)(nil)
+var _ proto.Unmarshaler = (*OldReply)(nil)
+
+var extRange_OldReply = []proto.ExtensionRange{
+	{100, 2147483646},
+}
+
+func (*OldReply) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_OldReply
+}
+
+type Communique struct {
+	MakeMeCry *bool `protobuf:"varint,1,opt,name=make_me_cry,json=makeMeCry" json:"make_me_cry,omitempty"`
+	// This is a oneof, called "union".
+	//
+	// Types that are valid to be assigned to Union:
+	//	*Communique_Number
+	//	*Communique_Name
+	//	*Communique_Data
+	//	*Communique_TempC
+	//	*Communique_Height
+	//	*Communique_Today
+	//	*Communique_Maybe
+	//	*Communique_Delta_
+	//	*Communique_Msg
+	//	*Communique_Somegroup
+	Union            isCommunique_Union `protobuf_oneof:"union"`
+	XXX_unrecognized []byte             `json:"-"`
+}
+
+func (m *Communique) Reset()         { *m = Communique{} }
+func (m *Communique) String() string { return proto.CompactTextString(m) }
+func (*Communique) ProtoMessage()    {}
+
+type isCommunique_Union interface {
+	isCommunique_Union()
+}
+
+type Communique_Number struct {
+	Number int32 `protobuf:"varint,5,opt,name=number,oneof"`
+}
+type Communique_Name struct {
+	Name string `protobuf:"bytes,6,opt,name=name,oneof"`
+}
+type Communique_Data struct {
+	Data []byte `protobuf:"bytes,7,opt,name=data,oneof"`
+}
+type Communique_TempC struct {
+	TempC float64 `protobuf:"fixed64,8,opt,name=temp_c,json=tempC,oneof"`
+}
+type Communique_Height struct {
+	Height float32 `protobuf:"fixed32,9,opt,name=height,oneof"`
+}
+type Communique_Today struct {
+	Today Days `protobuf:"varint,10,opt,name=today,enum=my.test.Days,oneof"`
+}
+type Communique_Maybe struct {
+	Maybe bool `protobuf:"varint,11,opt,name=maybe,oneof"`
+}
+type Communique_Delta_ struct {
+	Delta int32 `protobuf:"zigzag32,12,opt,name=delta,oneof"`
+}
+type Communique_Msg struct {
+	Msg *Reply `protobuf:"bytes,13,opt,name=msg,oneof"`
+}
+type Communique_Somegroup struct {
+	Somegroup *Communique_SomeGroup `protobuf:"group,14,opt,name=SomeGroup,json=somegroup,oneof"`
+}
+
+func (*Communique_Number) isCommunique_Union()    {}
+func (*Communique_Name) isCommunique_Union()      {}
+func (*Communique_Data) isCommunique_Union()      {}
+func (*Communique_TempC) isCommunique_Union()     {}
+func (*Communique_Height) isCommunique_Union()    {}
+func (*Communique_Today) isCommunique_Union()     {}
+func (*Communique_Maybe) isCommunique_Union()     {}
+func (*Communique_Delta_) isCommunique_Union()    {}
+func (*Communique_Msg) isCommunique_Union()       {}
+func (*Communique_Somegroup) isCommunique_Union() {}
+
+func (m *Communique) GetUnion() isCommunique_Union {
+	if m != nil {
+		return m.Union
+	}
+	return nil
+}
+
+func (m *Communique) GetMakeMeCry() bool {
+	if m != nil && m.MakeMeCry != nil {
+		return *m.MakeMeCry
+	}
+	return false
+}
+
+func (m *Communique) GetNumber() int32 {
+	if x, ok := m.GetUnion().(*Communique_Number); ok {
+		return x.Number
+	}
+	return 0
+}
+
+func (m *Communique) GetName() string {
+	if x, ok := m.GetUnion().(*Communique_Name); ok {
+		return x.Name
+	}
+	return ""
+}
+
+func (m *Communique) GetData() []byte {
+	if x, ok := m.GetUnion().(*Communique_Data); ok {
+		return x.Data
+	}
+	return nil
+}
+
+func (m *Communique) GetTempC() float64 {
+	if x, ok := m.GetUnion().(*Communique_TempC); ok {
+		return x.TempC
+	}
+	return 0
+}
+
+func (m *Communique) GetHeight() float32 {
+	if x, ok := m.GetUnion().(*Communique_Height); ok {
+		return x.Height
+	}
+	return 0
+}
+
+func (m *Communique) GetToday() Days {
+	if x, ok := m.GetUnion().(*Communique_Today); ok {
+		return x.Today
+	}
+	return Days_MONDAY
+}
+
+func (m *Communique) GetMaybe() bool {
+	if x, ok := m.GetUnion().(*Communique_Maybe); ok {
+		return x.Maybe
+	}
+	return false
+}
+
+func (m *Communique) GetDelta() int32 {
+	if x, ok := m.GetUnion().(*Communique_Delta_); ok {
+		return x.Delta
+	}
+	return 0
+}
+
+func (m *Communique) GetMsg() *Reply {
+	if x, ok := m.GetUnion().(*Communique_Msg); ok {
+		return x.Msg
+	}
+	return nil
+}
+
+func (m *Communique) GetSomegroup() *Communique_SomeGroup {
+	if x, ok := m.GetUnion().(*Communique_Somegroup); ok {
+		return x.Somegroup
+	}
+	return nil
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*Communique) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _Communique_OneofMarshaler, _Communique_OneofUnmarshaler, _Communique_OneofSizer, []interface{}{
+		(*Communique_Number)(nil),
+		(*Communique_Name)(nil),
+		(*Communique_Data)(nil),
+		(*Communique_TempC)(nil),
+		(*Communique_Height)(nil),
+		(*Communique_Today)(nil),
+		(*Communique_Maybe)(nil),
+		(*Communique_Delta_)(nil),
+		(*Communique_Msg)(nil),
+		(*Communique_Somegroup)(nil),
+	}
+}
+
+func _Communique_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*Communique)
+	// union
+	switch x := m.Union.(type) {
+	case *Communique_Number:
+		b.EncodeVarint(5<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.Number))
+	case *Communique_Name:
+		b.EncodeVarint(6<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.Name)
+	case *Communique_Data:
+		b.EncodeVarint(7<<3 | proto.WireBytes)
+		b.EncodeRawBytes(x.Data)
+	case *Communique_TempC:
+		b.EncodeVarint(8<<3 | proto.WireFixed64)
+		b.EncodeFixed64(math.Float64bits(x.TempC))
+	case *Communique_Height:
+		b.EncodeVarint(9<<3 | proto.WireFixed32)
+		b.EncodeFixed32(uint64(math.Float32bits(x.Height)))
+	case *Communique_Today:
+		b.EncodeVarint(10<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.Today))
+	case *Communique_Maybe:
+		t := uint64(0)
+		if x.Maybe {
+			t = 1
+		}
+		b.EncodeVarint(11<<3 | proto.WireVarint)
+		b.EncodeVarint(t)
+	case *Communique_Delta_:
+		b.EncodeVarint(12<<3 | proto.WireVarint)
+		b.EncodeZigzag32(uint64(x.Delta))
+	case *Communique_Msg:
+		b.EncodeVarint(13<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.Msg); err != nil {
+			return err
+		}
+	case *Communique_Somegroup:
+		b.EncodeVarint(14<<3 | proto.WireStartGroup)
+		if err := b.Marshal(x.Somegroup); err != nil {
+			return err
+		}
+		b.EncodeVarint(14<<3 | proto.WireEndGroup)
+	case nil:
+	default:
+		return fmt.Errorf("Communique.Union has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _Communique_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*Communique)
+	switch tag {
+	case 5: // union.number
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Communique_Number{int32(x)}
+		return true, err
+	case 6: // union.name
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Union = &Communique_Name{x}
+		return true, err
+	case 7: // union.data
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeRawBytes(true)
+		m.Union = &Communique_Data{x}
+		return true, err
+	case 8: // union.temp_c
+		if wire != proto.WireFixed64 {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeFixed64()
+		m.Union = &Communique_TempC{math.Float64frombits(x)}
+		return true, err
+	case 9: // union.height
+		if wire != proto.WireFixed32 {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeFixed32()
+		m.Union = &Communique_Height{math.Float32frombits(uint32(x))}
+		return true, err
+	case 10: // union.today
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Communique_Today{Days(x)}
+		return true, err
+	case 11: // union.maybe
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Communique_Maybe{x != 0}
+		return true, err
+	case 12: // union.delta
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeZigzag32()
+		m.Union = &Communique_Delta_{int32(x)}
+		return true, err
+	case 13: // union.msg
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(Reply)
+		err := b.DecodeMessage(msg)
+		m.Union = &Communique_Msg{msg}
+		return true, err
+	case 14: // union.somegroup
+		if wire != proto.WireStartGroup {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(Communique_SomeGroup)
+		err := b.DecodeGroup(msg)
+		m.Union = &Communique_Somegroup{msg}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _Communique_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*Communique)
+	// union
+	switch x := m.Union.(type) {
+	case *Communique_Number:
+		n += proto.SizeVarint(5<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.Number))
+	case *Communique_Name:
+		n += proto.SizeVarint(6<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.Name)))
+		n += len(x.Name)
+	case *Communique_Data:
+		n += proto.SizeVarint(7<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.Data)))
+		n += len(x.Data)
+	case *Communique_TempC:
+		n += proto.SizeVarint(8<<3 | proto.WireFixed64)
+		n += 8
+	case *Communique_Height:
+		n += proto.SizeVarint(9<<3 | proto.WireFixed32)
+		n += 4
+	case *Communique_Today:
+		n += proto.SizeVarint(10<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.Today))
+	case *Communique_Maybe:
+		n += proto.SizeVarint(11<<3 | proto.WireVarint)
+		n += 1
+	case *Communique_Delta_:
+		n += proto.SizeVarint(12<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64((uint32(x.Delta) << 1) ^ uint32((int32(x.Delta) >> 31))))
+	case *Communique_Msg:
+		s := proto.Size(x.Msg)
+		n += proto.SizeVarint(13<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case *Communique_Somegroup:
+		n += proto.SizeVarint(14<<3 | proto.WireStartGroup)
+		n += proto.Size(x.Somegroup)
+		n += proto.SizeVarint(14<<3 | proto.WireEndGroup)
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+type Communique_SomeGroup struct {
+	Member           *string `protobuf:"bytes,15,opt,name=member" json:"member,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *Communique_SomeGroup) Reset()         { *m = Communique_SomeGroup{} }
+func (m *Communique_SomeGroup) String() string { return proto.CompactTextString(m) }
+func (*Communique_SomeGroup) ProtoMessage()    {}
+
+func (m *Communique_SomeGroup) GetMember() string {
+	if m != nil && m.Member != nil {
+		return *m.Member
+	}
+	return ""
+}
+
+type Communique_Delta struct {
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *Communique_Delta) Reset()         { *m = Communique_Delta{} }
+func (m *Communique_Delta) String() string { return proto.CompactTextString(m) }
+func (*Communique_Delta) ProtoMessage()    {}
+
+var E_Tag = &proto.ExtensionDesc{
+	ExtendedType:  (*Reply)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         103,
+	Name:          "my.test.tag",
+	Tag:           "bytes,103,opt,name=tag",
+}
+
+var E_Donut = &proto.ExtensionDesc{
+	ExtendedType:  (*Reply)(nil),
+	ExtensionType: (*OtherReplyExtensions)(nil),
+	Field:         106,
+	Name:          "my.test.donut",
+	Tag:           "bytes,106,opt,name=donut",
+}
+
+func init() {
+	proto.RegisterType((*Request)(nil), "my.test.Request")
+	proto.RegisterType((*Request_SomeGroup)(nil), "my.test.Request.SomeGroup")
+	proto.RegisterType((*Reply)(nil), "my.test.Reply")
+	proto.RegisterType((*Reply_Entry)(nil), "my.test.Reply.Entry")
+	proto.RegisterType((*OtherBase)(nil), "my.test.OtherBase")
+	proto.RegisterType((*ReplyExtensions)(nil), "my.test.ReplyExtensions")
+	proto.RegisterType((*OtherReplyExtensions)(nil), "my.test.OtherReplyExtensions")
+	proto.RegisterType((*OldReply)(nil), "my.test.OldReply")
+	proto.RegisterType((*Communique)(nil), "my.test.Communique")
+	proto.RegisterType((*Communique_SomeGroup)(nil), "my.test.Communique.SomeGroup")
+	proto.RegisterType((*Communique_Delta)(nil), "my.test.Communique.Delta")
+	proto.RegisterEnum("my.test.HatType", HatType_name, HatType_value)
+	proto.RegisterEnum("my.test.Days", Days_name, Days_value)
+	proto.RegisterEnum("my.test.Request_Color", Request_Color_name, Request_Color_value)
+	proto.RegisterEnum("my.test.Reply_Entry_Game", Reply_Entry_Game_name, Reply_Entry_Game_value)
+	proto.RegisterExtension(E_ReplyExtensions_Time)
+	proto.RegisterExtension(E_ReplyExtensions_Carrot)
+	proto.RegisterExtension(E_ReplyExtensions_Donut)
+	proto.RegisterExtension(E_Tag)
+	proto.RegisterExtension(E_Donut)
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/my_test/test.pb.go.golden b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/my_test/test.pb.go.golden
new file mode 100644
index 000000000..9ec3e1292
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/my_test/test.pb.go.golden
@@ -0,0 +1,866 @@
+// Code generated by protoc-gen-go.
+// source: my_test/test.proto
+// DO NOT EDIT!
+
+/*
+Package my_test is a generated protocol buffer package.
+
+This package holds interesting messages.
+
+It is generated from these files:
+	my_test/test.proto
+
+It has these top-level messages:
+	Request
+	Reply
+	OtherBase
+	ReplyExtensions
+	OtherReplyExtensions
+	OldReply
+	Communique
+*/
+package my_test
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+import _ "github.com/golang/protobuf/protoc-gen-go/testdata/multi"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+type HatType int32
+
+const (
+	// deliberately skipping 0
+	HatType_FEDORA HatType = 1
+	HatType_FEZ    HatType = 2
+)
+
+var HatType_name = map[int32]string{
+	1: "FEDORA",
+	2: "FEZ",
+}
+var HatType_value = map[string]int32{
+	"FEDORA": 1,
+	"FEZ":    2,
+}
+
+func (x HatType) Enum() *HatType {
+	p := new(HatType)
+	*p = x
+	return p
+}
+func (x HatType) String() string {
+	return proto.EnumName(HatType_name, int32(x))
+}
+func (x *HatType) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(HatType_value, data, "HatType")
+	if err != nil {
+		return err
+	}
+	*x = HatType(value)
+	return nil
+}
+
+// This enum represents days of the week.
+type Days int32
+
+const (
+	Days_MONDAY  Days = 1
+	Days_TUESDAY Days = 2
+	Days_LUNDI   Days = 1
+)
+
+var Days_name = map[int32]string{
+	1: "MONDAY",
+	2: "TUESDAY",
+	// Duplicate value: 1: "LUNDI",
+}
+var Days_value = map[string]int32{
+	"MONDAY":  1,
+	"TUESDAY": 2,
+	"LUNDI":   1,
+}
+
+func (x Days) Enum() *Days {
+	p := new(Days)
+	*p = x
+	return p
+}
+func (x Days) String() string {
+	return proto.EnumName(Days_name, int32(x))
+}
+func (x *Days) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(Days_value, data, "Days")
+	if err != nil {
+		return err
+	}
+	*x = Days(value)
+	return nil
+}
+
+type Request_Color int32
+
+const (
+	Request_RED   Request_Color = 0
+	Request_GREEN Request_Color = 1
+	Request_BLUE  Request_Color = 2
+)
+
+var Request_Color_name = map[int32]string{
+	0: "RED",
+	1: "GREEN",
+	2: "BLUE",
+}
+var Request_Color_value = map[string]int32{
+	"RED":   0,
+	"GREEN": 1,
+	"BLUE":  2,
+}
+
+func (x Request_Color) Enum() *Request_Color {
+	p := new(Request_Color)
+	*p = x
+	return p
+}
+func (x Request_Color) String() string {
+	return proto.EnumName(Request_Color_name, int32(x))
+}
+func (x *Request_Color) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(Request_Color_value, data, "Request_Color")
+	if err != nil {
+		return err
+	}
+	*x = Request_Color(value)
+	return nil
+}
+
+type Reply_Entry_Game int32
+
+const (
+	Reply_Entry_FOOTBALL Reply_Entry_Game = 1
+	Reply_Entry_TENNIS   Reply_Entry_Game = 2
+)
+
+var Reply_Entry_Game_name = map[int32]string{
+	1: "FOOTBALL",
+	2: "TENNIS",
+}
+var Reply_Entry_Game_value = map[string]int32{
+	"FOOTBALL": 1,
+	"TENNIS":   2,
+}
+
+func (x Reply_Entry_Game) Enum() *Reply_Entry_Game {
+	p := new(Reply_Entry_Game)
+	*p = x
+	return p
+}
+func (x Reply_Entry_Game) String() string {
+	return proto.EnumName(Reply_Entry_Game_name, int32(x))
+}
+func (x *Reply_Entry_Game) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(Reply_Entry_Game_value, data, "Reply_Entry_Game")
+	if err != nil {
+		return err
+	}
+	*x = Reply_Entry_Game(value)
+	return nil
+}
+
+// This is a message that might be sent somewhere.
+type Request struct {
+	Key []int64 `protobuf:"varint,1,rep,name=key" json:"key,omitempty"`
+	//  optional imp.ImportedMessage imported_message = 2;
+	Hue *Request_Color `protobuf:"varint,3,opt,name=hue,enum=my.test.Request_Color" json:"hue,omitempty"`
+	Hat *HatType       `protobuf:"varint,4,opt,name=hat,enum=my.test.HatType,def=1" json:"hat,omitempty"`
+	//  optional imp.ImportedMessage.Owner owner = 6;
+	Deadline  *float32           `protobuf:"fixed32,7,opt,name=deadline,def=inf" json:"deadline,omitempty"`
+	Somegroup *Request_SomeGroup `protobuf:"group,8,opt,name=SomeGroup,json=somegroup" json:"somegroup,omitempty"`
+	// This is a map field. It will generate map[int32]string.
+	NameMapping map[int32]string `protobuf:"bytes,14,rep,name=name_mapping,json=nameMapping" json:"name_mapping,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	// This is a map field whose value type is a message.
+	MsgMapping map[int64]*Reply `protobuf:"bytes,15,rep,name=msg_mapping,json=msgMapping" json:"msg_mapping,omitempty" protobuf_key:"zigzag64,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	Reset_     *int32           `protobuf:"varint,12,opt,name=reset" json:"reset,omitempty"`
+	// This field should not conflict with any getters.
+	GetKey_          *string `protobuf:"bytes,16,opt,name=get_key,json=getKey" json:"get_key,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *Request) Reset()         { *m = Request{} }
+func (m *Request) String() string { return proto.CompactTextString(m) }
+func (*Request) ProtoMessage()    {}
+
+const Default_Request_Hat HatType = HatType_FEDORA
+
+var Default_Request_Deadline float32 = float32(math.Inf(1))
+
+func (m *Request) GetKey() []int64 {
+	if m != nil {
+		return m.Key
+	}
+	return nil
+}
+
+func (m *Request) GetHue() Request_Color {
+	if m != nil && m.Hue != nil {
+		return *m.Hue
+	}
+	return Request_RED
+}
+
+func (m *Request) GetHat() HatType {
+	if m != nil && m.Hat != nil {
+		return *m.Hat
+	}
+	return Default_Request_Hat
+}
+
+func (m *Request) GetDeadline() float32 {
+	if m != nil && m.Deadline != nil {
+		return *m.Deadline
+	}
+	return Default_Request_Deadline
+}
+
+func (m *Request) GetSomegroup() *Request_SomeGroup {
+	if m != nil {
+		return m.Somegroup
+	}
+	return nil
+}
+
+func (m *Request) GetNameMapping() map[int32]string {
+	if m != nil {
+		return m.NameMapping
+	}
+	return nil
+}
+
+func (m *Request) GetMsgMapping() map[int64]*Reply {
+	if m != nil {
+		return m.MsgMapping
+	}
+	return nil
+}
+
+func (m *Request) GetReset_() int32 {
+	if m != nil && m.Reset_ != nil {
+		return *m.Reset_
+	}
+	return 0
+}
+
+func (m *Request) GetGetKey_() string {
+	if m != nil && m.GetKey_ != nil {
+		return *m.GetKey_
+	}
+	return ""
+}
+
+type Request_SomeGroup struct {
+	GroupField       *int32 `protobuf:"varint,9,opt,name=group_field,json=groupField" json:"group_field,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *Request_SomeGroup) Reset()         { *m = Request_SomeGroup{} }
+func (m *Request_SomeGroup) String() string { return proto.CompactTextString(m) }
+func (*Request_SomeGroup) ProtoMessage()    {}
+
+func (m *Request_SomeGroup) GetGroupField() int32 {
+	if m != nil && m.GroupField != nil {
+		return *m.GroupField
+	}
+	return 0
+}
+
+type Reply struct {
+	Found                        []*Reply_Entry `protobuf:"bytes,1,rep,name=found" json:"found,omitempty"`
+	CompactKeys                  []int32        `protobuf:"varint,2,rep,packed,name=compact_keys,json=compactKeys" json:"compact_keys,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *Reply) Reset()         { *m = Reply{} }
+func (m *Reply) String() string { return proto.CompactTextString(m) }
+func (*Reply) ProtoMessage()    {}
+
+var extRange_Reply = []proto.ExtensionRange{
+	{100, 536870911},
+}
+
+func (*Reply) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_Reply
+}
+
+func (m *Reply) GetFound() []*Reply_Entry {
+	if m != nil {
+		return m.Found
+	}
+	return nil
+}
+
+func (m *Reply) GetCompactKeys() []int32 {
+	if m != nil {
+		return m.CompactKeys
+	}
+	return nil
+}
+
+type Reply_Entry struct {
+	KeyThatNeeds_1234Camel_CasIng *int64 `protobuf:"varint,1,req,name=key_that_needs_1234camel_CasIng,json=keyThatNeeds1234camelCasIng" json:"key_that_needs_1234camel_CasIng,omitempty"`
+	Value                         *int64 `protobuf:"varint,2,opt,name=value,def=7" json:"value,omitempty"`
+	XMyFieldName_2                *int64 `protobuf:"varint,3,opt,name=_my_field_name_2,json=myFieldName2" json:"_my_field_name_2,omitempty"`
+	XXX_unrecognized              []byte `json:"-"`
+}
+
+func (m *Reply_Entry) Reset()         { *m = Reply_Entry{} }
+func (m *Reply_Entry) String() string { return proto.CompactTextString(m) }
+func (*Reply_Entry) ProtoMessage()    {}
+
+const Default_Reply_Entry_Value int64 = 7
+
+func (m *Reply_Entry) GetKeyThatNeeds_1234Camel_CasIng() int64 {
+	if m != nil && m.KeyThatNeeds_1234Camel_CasIng != nil {
+		return *m.KeyThatNeeds_1234Camel_CasIng
+	}
+	return 0
+}
+
+func (m *Reply_Entry) GetValue() int64 {
+	if m != nil && m.Value != nil {
+		return *m.Value
+	}
+	return Default_Reply_Entry_Value
+}
+
+func (m *Reply_Entry) GetXMyFieldName_2() int64 {
+	if m != nil && m.XMyFieldName_2 != nil {
+		return *m.XMyFieldName_2
+	}
+	return 0
+}
+
+type OtherBase struct {
+	Name                         *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *OtherBase) Reset()         { *m = OtherBase{} }
+func (m *OtherBase) String() string { return proto.CompactTextString(m) }
+func (*OtherBase) ProtoMessage()    {}
+
+var extRange_OtherBase = []proto.ExtensionRange{
+	{100, 536870911},
+}
+
+func (*OtherBase) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_OtherBase
+}
+
+func (m *OtherBase) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+type ReplyExtensions struct {
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *ReplyExtensions) Reset()         { *m = ReplyExtensions{} }
+func (m *ReplyExtensions) String() string { return proto.CompactTextString(m) }
+func (*ReplyExtensions) ProtoMessage()    {}
+
+var E_ReplyExtensions_Time = &proto.ExtensionDesc{
+	ExtendedType:  (*Reply)(nil),
+	ExtensionType: (*float64)(nil),
+	Field:         101,
+	Name:          "my.test.ReplyExtensions.time",
+	Tag:           "fixed64,101,opt,name=time",
+}
+
+var E_ReplyExtensions_Carrot = &proto.ExtensionDesc{
+	ExtendedType:  (*Reply)(nil),
+	ExtensionType: (*ReplyExtensions)(nil),
+	Field:         105,
+	Name:          "my.test.ReplyExtensions.carrot",
+	Tag:           "bytes,105,opt,name=carrot",
+}
+
+var E_ReplyExtensions_Donut = &proto.ExtensionDesc{
+	ExtendedType:  (*OtherBase)(nil),
+	ExtensionType: (*ReplyExtensions)(nil),
+	Field:         101,
+	Name:          "my.test.ReplyExtensions.donut",
+	Tag:           "bytes,101,opt,name=donut",
+}
+
+type OtherReplyExtensions struct {
+	Key              *int32 `protobuf:"varint,1,opt,name=key" json:"key,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *OtherReplyExtensions) Reset()         { *m = OtherReplyExtensions{} }
+func (m *OtherReplyExtensions) String() string { return proto.CompactTextString(m) }
+func (*OtherReplyExtensions) ProtoMessage()    {}
+
+func (m *OtherReplyExtensions) GetKey() int32 {
+	if m != nil && m.Key != nil {
+		return *m.Key
+	}
+	return 0
+}
+
+type OldReply struct {
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *OldReply) Reset()         { *m = OldReply{} }
+func (m *OldReply) String() string { return proto.CompactTextString(m) }
+func (*OldReply) ProtoMessage()    {}
+
+func (m *OldReply) Marshal() ([]byte, error) {
+	return proto.MarshalMessageSet(&m.XXX_InternalExtensions)
+}
+func (m *OldReply) Unmarshal(buf []byte) error {
+	return proto.UnmarshalMessageSet(buf, &m.XXX_InternalExtensions)
+}
+func (m *OldReply) MarshalJSON() ([]byte, error) {
+	return proto.MarshalMessageSetJSON(&m.XXX_InternalExtensions)
+}
+func (m *OldReply) UnmarshalJSON(buf []byte) error {
+	return proto.UnmarshalMessageSetJSON(buf, &m.XXX_InternalExtensions)
+}
+
+// ensure OldReply satisfies proto.Marshaler and proto.Unmarshaler
+var _ proto.Marshaler = (*OldReply)(nil)
+var _ proto.Unmarshaler = (*OldReply)(nil)
+
+var extRange_OldReply = []proto.ExtensionRange{
+	{100, 2147483646},
+}
+
+func (*OldReply) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_OldReply
+}
+
+type Communique struct {
+	MakeMeCry *bool `protobuf:"varint,1,opt,name=make_me_cry,json=makeMeCry" json:"make_me_cry,omitempty"`
+	// This is a oneof, called "union".
+	//
+	// Types that are valid to be assigned to Union:
+	//	*Communique_Number
+	//	*Communique_Name
+	//	*Communique_Data
+	//	*Communique_TempC
+	//	*Communique_Height
+	//	*Communique_Today
+	//	*Communique_Maybe
+	//	*Communique_Delta_
+	//	*Communique_Msg
+	//	*Communique_Somegroup
+	Union            isCommunique_Union `protobuf_oneof:"union"`
+	XXX_unrecognized []byte             `json:"-"`
+}
+
+func (m *Communique) Reset()         { *m = Communique{} }
+func (m *Communique) String() string { return proto.CompactTextString(m) }
+func (*Communique) ProtoMessage()    {}
+
+type isCommunique_Union interface {
+	isCommunique_Union()
+}
+
+type Communique_Number struct {
+	Number int32 `protobuf:"varint,5,opt,name=number,oneof"`
+}
+type Communique_Name struct {
+	Name string `protobuf:"bytes,6,opt,name=name,oneof"`
+}
+type Communique_Data struct {
+	Data []byte `protobuf:"bytes,7,opt,name=data,oneof"`
+}
+type Communique_TempC struct {
+	TempC float64 `protobuf:"fixed64,8,opt,name=temp_c,json=tempC,oneof"`
+}
+type Communique_Height struct {
+	Height float32 `protobuf:"fixed32,9,opt,name=height,oneof"`
+}
+type Communique_Today struct {
+	Today Days `protobuf:"varint,10,opt,name=today,enum=my.test.Days,oneof"`
+}
+type Communique_Maybe struct {
+	Maybe bool `protobuf:"varint,11,opt,name=maybe,oneof"`
+}
+type Communique_Delta_ struct {
+	Delta int32 `protobuf:"zigzag32,12,opt,name=delta,oneof"`
+}
+type Communique_Msg struct {
+	Msg *Reply `protobuf:"bytes,13,opt,name=msg,oneof"`
+}
+type Communique_Somegroup struct {
+	Somegroup *Communique_SomeGroup `protobuf:"group,14,opt,name=SomeGroup,json=somegroup,oneof"`
+}
+
+func (*Communique_Number) isCommunique_Union()    {}
+func (*Communique_Name) isCommunique_Union()      {}
+func (*Communique_Data) isCommunique_Union()      {}
+func (*Communique_TempC) isCommunique_Union()     {}
+func (*Communique_Height) isCommunique_Union()    {}
+func (*Communique_Today) isCommunique_Union()     {}
+func (*Communique_Maybe) isCommunique_Union()     {}
+func (*Communique_Delta_) isCommunique_Union()    {}
+func (*Communique_Msg) isCommunique_Union()       {}
+func (*Communique_Somegroup) isCommunique_Union() {}
+
+func (m *Communique) GetUnion() isCommunique_Union {
+	if m != nil {
+		return m.Union
+	}
+	return nil
+}
+
+func (m *Communique) GetMakeMeCry() bool {
+	if m != nil && m.MakeMeCry != nil {
+		return *m.MakeMeCry
+	}
+	return false
+}
+
+func (m *Communique) GetNumber() int32 {
+	if x, ok := m.GetUnion().(*Communique_Number); ok {
+		return x.Number
+	}
+	return 0
+}
+
+func (m *Communique) GetName() string {
+	if x, ok := m.GetUnion().(*Communique_Name); ok {
+		return x.Name
+	}
+	return ""
+}
+
+func (m *Communique) GetData() []byte {
+	if x, ok := m.GetUnion().(*Communique_Data); ok {
+		return x.Data
+	}
+	return nil
+}
+
+func (m *Communique) GetTempC() float64 {
+	if x, ok := m.GetUnion().(*Communique_TempC); ok {
+		return x.TempC
+	}
+	return 0
+}
+
+func (m *Communique) GetHeight() float32 {
+	if x, ok := m.GetUnion().(*Communique_Height); ok {
+		return x.Height
+	}
+	return 0
+}
+
+func (m *Communique) GetToday() Days {
+	if x, ok := m.GetUnion().(*Communique_Today); ok {
+		return x.Today
+	}
+	return Days_MONDAY
+}
+
+func (m *Communique) GetMaybe() bool {
+	if x, ok := m.GetUnion().(*Communique_Maybe); ok {
+		return x.Maybe
+	}
+	return false
+}
+
+func (m *Communique) GetDelta() int32 {
+	if x, ok := m.GetUnion().(*Communique_Delta_); ok {
+		return x.Delta
+	}
+	return 0
+}
+
+func (m *Communique) GetMsg() *Reply {
+	if x, ok := m.GetUnion().(*Communique_Msg); ok {
+		return x.Msg
+	}
+	return nil
+}
+
+func (m *Communique) GetSomegroup() *Communique_SomeGroup {
+	if x, ok := m.GetUnion().(*Communique_Somegroup); ok {
+		return x.Somegroup
+	}
+	return nil
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*Communique) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _Communique_OneofMarshaler, _Communique_OneofUnmarshaler, _Communique_OneofSizer, []interface{}{
+		(*Communique_Number)(nil),
+		(*Communique_Name)(nil),
+		(*Communique_Data)(nil),
+		(*Communique_TempC)(nil),
+		(*Communique_Height)(nil),
+		(*Communique_Today)(nil),
+		(*Communique_Maybe)(nil),
+		(*Communique_Delta_)(nil),
+		(*Communique_Msg)(nil),
+		(*Communique_Somegroup)(nil),
+	}
+}
+
+func _Communique_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*Communique)
+	// union
+	switch x := m.Union.(type) {
+	case *Communique_Number:
+		b.EncodeVarint(5<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.Number))
+	case *Communique_Name:
+		b.EncodeVarint(6<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.Name)
+	case *Communique_Data:
+		b.EncodeVarint(7<<3 | proto.WireBytes)
+		b.EncodeRawBytes(x.Data)
+	case *Communique_TempC:
+		b.EncodeVarint(8<<3 | proto.WireFixed64)
+		b.EncodeFixed64(math.Float64bits(x.TempC))
+	case *Communique_Height:
+		b.EncodeVarint(9<<3 | proto.WireFixed32)
+		b.EncodeFixed32(uint64(math.Float32bits(x.Height)))
+	case *Communique_Today:
+		b.EncodeVarint(10<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.Today))
+	case *Communique_Maybe:
+		t := uint64(0)
+		if x.Maybe {
+			t = 1
+		}
+		b.EncodeVarint(11<<3 | proto.WireVarint)
+		b.EncodeVarint(t)
+	case *Communique_Delta_:
+		b.EncodeVarint(12<<3 | proto.WireVarint)
+		b.EncodeZigzag32(uint64(x.Delta))
+	case *Communique_Msg:
+		b.EncodeVarint(13<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.Msg); err != nil {
+			return err
+		}
+	case *Communique_Somegroup:
+		b.EncodeVarint(14<<3 | proto.WireStartGroup)
+		if err := b.Marshal(x.Somegroup); err != nil {
+			return err
+		}
+		b.EncodeVarint(14<<3 | proto.WireEndGroup)
+	case nil:
+	default:
+		return fmt.Errorf("Communique.Union has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _Communique_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*Communique)
+	switch tag {
+	case 5: // union.number
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Communique_Number{int32(x)}
+		return true, err
+	case 6: // union.name
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Union = &Communique_Name{x}
+		return true, err
+	case 7: // union.data
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeRawBytes(true)
+		m.Union = &Communique_Data{x}
+		return true, err
+	case 8: // union.temp_c
+		if wire != proto.WireFixed64 {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeFixed64()
+		m.Union = &Communique_TempC{math.Float64frombits(x)}
+		return true, err
+	case 9: // union.height
+		if wire != proto.WireFixed32 {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeFixed32()
+		m.Union = &Communique_Height{math.Float32frombits(uint32(x))}
+		return true, err
+	case 10: // union.today
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Communique_Today{Days(x)}
+		return true, err
+	case 11: // union.maybe
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Union = &Communique_Maybe{x != 0}
+		return true, err
+	case 12: // union.delta
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeZigzag32()
+		m.Union = &Communique_Delta_{int32(x)}
+		return true, err
+	case 13: // union.msg
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(Reply)
+		err := b.DecodeMessage(msg)
+		m.Union = &Communique_Msg{msg}
+		return true, err
+	case 14: // union.somegroup
+		if wire != proto.WireStartGroup {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(Communique_SomeGroup)
+		err := b.DecodeGroup(msg)
+		m.Union = &Communique_Somegroup{msg}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _Communique_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*Communique)
+	// union
+	switch x := m.Union.(type) {
+	case *Communique_Number:
+		n += proto.SizeVarint(5<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.Number))
+	case *Communique_Name:
+		n += proto.SizeVarint(6<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.Name)))
+		n += len(x.Name)
+	case *Communique_Data:
+		n += proto.SizeVarint(7<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.Data)))
+		n += len(x.Data)
+	case *Communique_TempC:
+		n += proto.SizeVarint(8<<3 | proto.WireFixed64)
+		n += 8
+	case *Communique_Height:
+		n += proto.SizeVarint(9<<3 | proto.WireFixed32)
+		n += 4
+	case *Communique_Today:
+		n += proto.SizeVarint(10<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.Today))
+	case *Communique_Maybe:
+		n += proto.SizeVarint(11<<3 | proto.WireVarint)
+		n += 1
+	case *Communique_Delta_:
+		n += proto.SizeVarint(12<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64((uint32(x.Delta) << 1) ^ uint32((int32(x.Delta) >> 31))))
+	case *Communique_Msg:
+		s := proto.Size(x.Msg)
+		n += proto.SizeVarint(13<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case *Communique_Somegroup:
+		n += proto.SizeVarint(14<<3 | proto.WireStartGroup)
+		n += proto.Size(x.Somegroup)
+		n += proto.SizeVarint(14<<3 | proto.WireEndGroup)
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+type Communique_SomeGroup struct {
+	Member           *string `protobuf:"bytes,15,opt,name=member" json:"member,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *Communique_SomeGroup) Reset()         { *m = Communique_SomeGroup{} }
+func (m *Communique_SomeGroup) String() string { return proto.CompactTextString(m) }
+func (*Communique_SomeGroup) ProtoMessage()    {}
+
+func (m *Communique_SomeGroup) GetMember() string {
+	if m != nil && m.Member != nil {
+		return *m.Member
+	}
+	return ""
+}
+
+type Communique_Delta struct {
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *Communique_Delta) Reset()         { *m = Communique_Delta{} }
+func (m *Communique_Delta) String() string { return proto.CompactTextString(m) }
+func (*Communique_Delta) ProtoMessage()    {}
+
+var E_Tag = &proto.ExtensionDesc{
+	ExtendedType:  (*Reply)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         103,
+	Name:          "my.test.tag",
+	Tag:           "bytes,103,opt,name=tag",
+}
+
+var E_Donut = &proto.ExtensionDesc{
+	ExtendedType:  (*Reply)(nil),
+	ExtensionType: (*OtherReplyExtensions)(nil),
+	Field:         106,
+	Name:          "my.test.donut",
+	Tag:           "bytes,106,opt,name=donut",
+}
+
+func init() {
+	proto.RegisterType((*Request)(nil), "my.test.Request")
+	proto.RegisterType((*Request_SomeGroup)(nil), "my.test.Request.SomeGroup")
+	proto.RegisterType((*Reply)(nil), "my.test.Reply")
+	proto.RegisterType((*Reply_Entry)(nil), "my.test.Reply.Entry")
+	proto.RegisterType((*OtherBase)(nil), "my.test.OtherBase")
+	proto.RegisterType((*ReplyExtensions)(nil), "my.test.ReplyExtensions")
+	proto.RegisterType((*OtherReplyExtensions)(nil), "my.test.OtherReplyExtensions")
+	proto.RegisterType((*OldReply)(nil), "my.test.OldReply")
+	proto.RegisterType((*Communique)(nil), "my.test.Communique")
+	proto.RegisterType((*Communique_SomeGroup)(nil), "my.test.Communique.SomeGroup")
+	proto.RegisterType((*Communique_Delta)(nil), "my.test.Communique.Delta")
+	proto.RegisterEnum("my.test.HatType", HatType_name, HatType_value)
+	proto.RegisterEnum("my.test.Days", Days_name, Days_value)
+	proto.RegisterEnum("my.test.Request_Color", Request_Color_name, Request_Color_value)
+	proto.RegisterEnum("my.test.Reply_Entry_Game", Reply_Entry_Game_name, Reply_Entry_Game_value)
+	proto.RegisterExtension(E_ReplyExtensions_Time)
+	proto.RegisterExtension(E_ReplyExtensions_Carrot)
+	proto.RegisterExtension(E_ReplyExtensions_Donut)
+	proto.RegisterExtension(E_Tag)
+	proto.RegisterExtension(E_Donut)
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/my_test/test.proto b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/my_test/test.proto
new file mode 100644
index 000000000..8e7094632
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/my_test/test.proto
@@ -0,0 +1,156 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto2";
+
+// This package holds interesting messages.
+package my.test;  // dotted package name
+
+//import "imp.proto";
+import "multi/multi1.proto";  // unused import
+
+enum HatType {
+  // deliberately skipping 0
+  FEDORA = 1;
+  FEZ = 2;
+}
+
+// This enum represents days of the week.
+enum Days {
+  option allow_alias = true;
+
+  MONDAY = 1;
+  TUESDAY = 2;
+  LUNDI = 1;  // same value as MONDAY
+}
+
+// This is a message that might be sent somewhere.
+message Request {
+  enum Color {
+    RED = 0;
+    GREEN = 1;
+    BLUE = 2;
+  }
+  repeated int64 key = 1;
+//  optional imp.ImportedMessage imported_message = 2;
+  optional Color hue = 3; // no default
+  optional HatType hat = 4 [default=FEDORA];
+//  optional imp.ImportedMessage.Owner owner = 6;
+  optional float deadline = 7 [default=inf];
+  optional group SomeGroup = 8 {
+    optional int32 group_field = 9;
+  }
+
+  // These foreign types are in imp2.proto,
+  // which is publicly imported by imp.proto.
+//  optional imp.PubliclyImportedMessage pub = 10;
+//  optional imp.PubliclyImportedEnum pub_enum = 13 [default=HAIR];
+
+
+  // This is a map field. It will generate map[int32]string.
+  map<int32, string> name_mapping = 14;
+  // This is a map field whose value type is a message.
+  map<sint64, Reply> msg_mapping = 15;
+
+  optional int32 reset = 12;
+  // This field should not conflict with any getters.
+  optional string get_key = 16;
+}
+
+message Reply {
+  message Entry {
+    required int64 key_that_needs_1234camel_CasIng = 1;
+    optional int64 value = 2 [default=7];
+    optional int64 _my_field_name_2 = 3;
+    enum Game {
+      FOOTBALL = 1;
+      TENNIS = 2;
+    }
+  }
+  repeated Entry found = 1;
+  repeated int32 compact_keys = 2 [packed=true];
+  extensions 100 to max;
+}
+
+message OtherBase {
+  optional string name = 1;
+  extensions 100 to max;
+}
+
+message ReplyExtensions {
+  extend Reply {
+    optional double time = 101;
+    optional ReplyExtensions carrot = 105;
+  }
+  extend OtherBase {
+    optional ReplyExtensions donut = 101;
+  }
+}
+
+message OtherReplyExtensions {
+  optional int32 key = 1;
+}
+
+// top-level extension
+extend Reply {
+  optional string tag = 103;
+  optional OtherReplyExtensions donut = 106;
+//  optional imp.ImportedMessage elephant = 107;  // extend with message from another file.
+}
+
+message OldReply {
+  // Extensions will be encoded in MessageSet wire format.
+  option message_set_wire_format = true;
+  extensions 100 to max;
+}
+
+message Communique {
+  optional bool make_me_cry = 1;
+
+  // This is a oneof, called "union".
+  oneof union {
+    int32 number = 5;
+    string name = 6;
+    bytes data = 7;
+    double temp_c = 8;
+    float height = 9;
+    Days today = 10;
+    bool maybe = 11;
+    sint32 delta = 12;  // name will conflict with Delta below
+    Reply msg = 13;
+    group SomeGroup = 14 {
+      optional string member = 15;
+    }
+  }
+
+  message Delta {}
+}
+
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/proto3.proto b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/proto3.proto
new file mode 100644
index 000000000..869b9af5a
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/testdata/proto3.proto
@@ -0,0 +1,53 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2014 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto3";
+
+package proto3;
+
+message Request {
+  enum Flavour {
+    SWEET = 0;
+    SOUR = 1;
+    UMAMI = 2;
+    GOPHERLICIOUS = 3;
+  }
+  string name = 1;
+  repeated int64 key = 2;
+  Flavour taste = 3;
+  Book book = 4;
+  repeated int64 unpacked = 5 [packed=false];
+}
+
+message Book {
+  string title = 1;
+  bytes raw_data = 2;
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/any.go b/vendor/github.com/golang/protobuf/ptypes/any.go
new file mode 100644
index 000000000..89e07ae19
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/any.go
@@ -0,0 +1,136 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2016 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package ptypes
+
+// This file implements functions to marshal proto.Message to/from
+// google.protobuf.Any message.
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+
+	"github.com/golang/protobuf/proto"
+	"github.com/golang/protobuf/ptypes/any"
+)
+
+const googleApis = "type.googleapis.com/"
+
+// AnyMessageName returns the name of the message contained in a google.protobuf.Any message.
+//
+// Note that regular type assertions should be done using the Is
+// function. AnyMessageName is provided for less common use cases like filtering a
+// sequence of Any messages based on a set of allowed message type names.
+func AnyMessageName(any *any.Any) (string, error) {
+	slash := strings.LastIndex(any.TypeUrl, "/")
+	if slash < 0 {
+		return "", fmt.Errorf("message type url %q is invalid", any.TypeUrl)
+	}
+	return any.TypeUrl[slash+1:], nil
+}
+
+// MarshalAny takes the protocol buffer and encodes it into google.protobuf.Any.
+func MarshalAny(pb proto.Message) (*any.Any, error) {
+	value, err := proto.Marshal(pb)
+	if err != nil {
+		return nil, err
+	}
+	return &any.Any{TypeUrl: googleApis + proto.MessageName(pb), Value: value}, nil
+}
+
+// DynamicAny is a value that can be passed to UnmarshalAny to automatically
+// allocate a proto.Message for the type specified in a google.protobuf.Any
+// message. The allocated message is stored in the embedded proto.Message.
+//
+// Example:
+//
+//   var x ptypes.DynamicAny
+//   if err := ptypes.UnmarshalAny(a, &x); err != nil { ... }
+//   fmt.Printf("unmarshaled message: %v", x.Message)
+type DynamicAny struct {
+	proto.Message
+}
+
+// Empty returns a new proto.Message of the type specified in a
+// google.protobuf.Any message. It returns an error if corresponding message
+// type isn't linked in.
+func Empty(any *any.Any) (proto.Message, error) {
+	aname, err := AnyMessageName(any)
+	if err != nil {
+		return nil, err
+	}
+
+	t := proto.MessageType(aname)
+	if t == nil {
+		return nil, fmt.Errorf("any: message type %q isn't linked in", aname)
+	}
+	return reflect.New(t.Elem()).Interface().(proto.Message), nil
+}
+
+// UnmarshalAny parses the protocol buffer representation in a google.protobuf.Any
+// message and places the decoded result in pb. It returns an error if type of
+// contents of Any message does not match type of pb message.
+//
+// pb can be a proto.Message, or a *DynamicAny.
+func UnmarshalAny(any *any.Any, pb proto.Message) error {
+	if d, ok := pb.(*DynamicAny); ok {
+		if d.Message == nil {
+			var err error
+			d.Message, err = Empty(any)
+			if err != nil {
+				return err
+			}
+		}
+		return UnmarshalAny(any, d.Message)
+	}
+
+	aname, err := AnyMessageName(any)
+	if err != nil {
+		return err
+	}
+
+	mname := proto.MessageName(pb)
+	if aname != mname {
+		return fmt.Errorf("mismatched message type: got %q want %q", aname, mname)
+	}
+	return proto.Unmarshal(any.Value, pb)
+}
+
+// Is returns true if any value contains a given message type.
+func Is(any *any.Any, pb proto.Message) bool {
+	aname, err := AnyMessageName(any)
+	if err != nil {
+		return false
+	}
+
+	return aname == proto.MessageName(pb)
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/any/any.pb.go b/vendor/github.com/golang/protobuf/ptypes/any/any.pb.go
new file mode 100644
index 000000000..f2c6906b9
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/any/any.pb.go
@@ -0,0 +1,155 @@
+// Code generated by protoc-gen-go.
+// source: github.com/golang/protobuf/ptypes/any/any.proto
+// DO NOT EDIT!
+
+/*
+Package any is a generated protocol buffer package.
+
+It is generated from these files:
+	github.com/golang/protobuf/ptypes/any/any.proto
+
+It has these top-level messages:
+	Any
+*/
+package any
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+// `Any` contains an arbitrary serialized protocol buffer message along with a
+// URL that describes the type of the serialized message.
+//
+// Protobuf library provides support to pack/unpack Any values in the form
+// of utility functions or additional generated methods of the Any type.
+//
+// Example 1: Pack and unpack a message in C++.
+//
+//     Foo foo = ...;
+//     Any any;
+//     any.PackFrom(foo);
+//     ...
+//     if (any.UnpackTo(&foo)) {
+//       ...
+//     }
+//
+// Example 2: Pack and unpack a message in Java.
+//
+//     Foo foo = ...;
+//     Any any = Any.pack(foo);
+//     ...
+//     if (any.is(Foo.class)) {
+//       foo = any.unpack(Foo.class);
+//     }
+//
+//  Example 3: Pack and unpack a message in Python.
+//
+//     foo = Foo(...)
+//     any = Any()
+//     any.Pack(foo)
+//     ...
+//     if any.Is(Foo.DESCRIPTOR):
+//       any.Unpack(foo)
+//       ...
+//
+// The pack methods provided by protobuf library will by default use
+// 'type.googleapis.com/full.type.name' as the type URL and the unpack
+// methods only use the fully qualified type name after the last '/'
+// in the type URL, for example "foo.bar.com/x/y.z" will yield type
+// name "y.z".
+//
+//
+// JSON
+// ====
+// The JSON representation of an `Any` value uses the regular
+// representation of the deserialized, embedded message, with an
+// additional field `@type` which contains the type URL. Example:
+//
+//     package google.profile;
+//     message Person {
+//       string first_name = 1;
+//       string last_name = 2;
+//     }
+//
+//     {
+//       "@type": "type.googleapis.com/google.profile.Person",
+//       "firstName": <string>,
+//       "lastName": <string>
+//     }
+//
+// If the embedded message type is well-known and has a custom JSON
+// representation, that representation will be embedded adding a field
+// `value` which holds the custom JSON in addition to the `@type`
+// field. Example (for message [google.protobuf.Duration][]):
+//
+//     {
+//       "@type": "type.googleapis.com/google.protobuf.Duration",
+//       "value": "1.212s"
+//     }
+//
+type Any struct {
+	// A URL/resource name whose content describes the type of the
+	// serialized protocol buffer message.
+	//
+	// For URLs which use the scheme `http`, `https`, or no scheme, the
+	// following restrictions and interpretations apply:
+	//
+	// * If no scheme is provided, `https` is assumed.
+	// * The last segment of the URL's path must represent the fully
+	//   qualified name of the type (as in `path/google.protobuf.Duration`).
+	//   The name should be in a canonical form (e.g., leading "." is
+	//   not accepted).
+	// * An HTTP GET on the URL must yield a [google.protobuf.Type][]
+	//   value in binary format, or produce an error.
+	// * Applications are allowed to cache lookup results based on the
+	//   URL, or have them precompiled into a binary to avoid any
+	//   lookup. Therefore, binary compatibility needs to be preserved
+	//   on changes to types. (Use versioned type names to manage
+	//   breaking changes.)
+	//
+	// Schemes other than `http`, `https` (or the empty scheme) might be
+	// used with implementation specific semantics.
+	//
+	TypeUrl string `protobuf:"bytes,1,opt,name=type_url,json=typeUrl" json:"type_url,omitempty"`
+	// Must be a valid serialized protocol buffer of the above specified type.
+	Value []byte `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (m *Any) Reset()                    { *m = Any{} }
+func (m *Any) String() string            { return proto.CompactTextString(m) }
+func (*Any) ProtoMessage()               {}
+func (*Any) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+func (*Any) XXX_WellKnownType() string   { return "Any" }
+
+func init() {
+	proto.RegisterType((*Any)(nil), "google.protobuf.Any")
+}
+
+func init() { proto.RegisterFile("github.com/golang/protobuf/ptypes/any/any.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
+	// 187 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0xd2, 0x4f, 0xcf, 0x2c, 0xc9,
+	0x28, 0x4d, 0xd2, 0x4b, 0xce, 0xcf, 0xd5, 0x4f, 0xcf, 0xcf, 0x49, 0xcc, 0x4b, 0xd7, 0x2f, 0x28,
+	0xca, 0x2f, 0xc9, 0x4f, 0x2a, 0x4d, 0xd3, 0x2f, 0x28, 0xa9, 0x2c, 0x48, 0x2d, 0xd6, 0x4f, 0xcc,
+	0xab, 0x04, 0x61, 0x3d, 0xb0, 0xb8, 0x10, 0x7f, 0x7a, 0x7e, 0x7e, 0x7a, 0x4e, 0xaa, 0x1e, 0x4c,
+	0x95, 0x92, 0x19, 0x17, 0xb3, 0x63, 0x5e, 0xa5, 0x90, 0x24, 0x17, 0x07, 0x48, 0x79, 0x7c, 0x69,
+	0x51, 0x8e, 0x04, 0xa3, 0x02, 0xa3, 0x06, 0x67, 0x10, 0x3b, 0x88, 0x1f, 0x5a, 0x94, 0x23, 0x24,
+	0xc2, 0xc5, 0x5a, 0x96, 0x98, 0x53, 0x9a, 0x2a, 0xc1, 0xa4, 0xc0, 0xa8, 0xc1, 0x13, 0x04, 0xe1,
+	0x38, 0x15, 0x71, 0x09, 0x27, 0xe7, 0xe7, 0xea, 0xa1, 0x19, 0xe7, 0xc4, 0xe1, 0x98, 0x57, 0x19,
+	0x00, 0xe2, 0x04, 0x30, 0x46, 0xa9, 0x12, 0xe5, 0xb8, 0x05, 0x8c, 0x8c, 0x8b, 0x98, 0x98, 0xdd,
+	0x03, 0x9c, 0x56, 0x31, 0xc9, 0xb9, 0x43, 0x4c, 0x0b, 0x80, 0xaa, 0xd2, 0x0b, 0x4f, 0xcd, 0xc9,
+	0xf1, 0xce, 0xcb, 0x2f, 0xcf, 0x0b, 0x01, 0xa9, 0x4e, 0x62, 0x03, 0x6b, 0x37, 0x06, 0x04, 0x00,
+	0x00, 0xff, 0xff, 0xc6, 0x4d, 0x03, 0x23, 0xf6, 0x00, 0x00, 0x00,
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/any/any.proto b/vendor/github.com/golang/protobuf/ptypes/any/any.proto
new file mode 100644
index 000000000..81dcf46cc
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/any/any.proto
@@ -0,0 +1,140 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto3";
+
+package google.protobuf;
+
+option csharp_namespace = "Google.Protobuf.WellKnownTypes";
+option go_package = "github.com/golang/protobuf/ptypes/any";
+option java_package = "com.google.protobuf";
+option java_outer_classname = "AnyProto";
+option java_multiple_files = true;
+option java_generate_equals_and_hash = true;
+option objc_class_prefix = "GPB";
+
+// `Any` contains an arbitrary serialized protocol buffer message along with a
+// URL that describes the type of the serialized message.
+//
+// Protobuf library provides support to pack/unpack Any values in the form
+// of utility functions or additional generated methods of the Any type.
+//
+// Example 1: Pack and unpack a message in C++.
+//
+//     Foo foo = ...;
+//     Any any;
+//     any.PackFrom(foo);
+//     ...
+//     if (any.UnpackTo(&foo)) {
+//       ...
+//     }
+//
+// Example 2: Pack and unpack a message in Java.
+//
+//     Foo foo = ...;
+//     Any any = Any.pack(foo);
+//     ...
+//     if (any.is(Foo.class)) {
+//       foo = any.unpack(Foo.class);
+//     }
+//
+//  Example 3: Pack and unpack a message in Python.
+//
+//     foo = Foo(...)
+//     any = Any()
+//     any.Pack(foo)
+//     ...
+//     if any.Is(Foo.DESCRIPTOR):
+//       any.Unpack(foo)
+//       ...
+//
+// The pack methods provided by protobuf library will by default use
+// 'type.googleapis.com/full.type.name' as the type URL and the unpack
+// methods only use the fully qualified type name after the last '/'
+// in the type URL, for example "foo.bar.com/x/y.z" will yield type
+// name "y.z".
+//
+//
+// JSON
+// ====
+// The JSON representation of an `Any` value uses the regular
+// representation of the deserialized, embedded message, with an
+// additional field `@type` which contains the type URL. Example:
+//
+//     package google.profile;
+//     message Person {
+//       string first_name = 1;
+//       string last_name = 2;
+//     }
+//
+//     {
+//       "@type": "type.googleapis.com/google.profile.Person",
+//       "firstName": <string>,
+//       "lastName": <string>
+//     }
+//
+// If the embedded message type is well-known and has a custom JSON
+// representation, that representation will be embedded adding a field
+// `value` which holds the custom JSON in addition to the `@type`
+// field. Example (for message [google.protobuf.Duration][]):
+//
+//     {
+//       "@type": "type.googleapis.com/google.protobuf.Duration",
+//       "value": "1.212s"
+//     }
+//
+message Any {
+  // A URL/resource name whose content describes the type of the
+  // serialized protocol buffer message.
+  //
+  // For URLs which use the scheme `http`, `https`, or no scheme, the
+  // following restrictions and interpretations apply:
+  //
+  // * If no scheme is provided, `https` is assumed.
+  // * The last segment of the URL's path must represent the fully
+  //   qualified name of the type (as in `path/google.protobuf.Duration`).
+  //   The name should be in a canonical form (e.g., leading "." is
+  //   not accepted).
+  // * An HTTP GET on the URL must yield a [google.protobuf.Type][]
+  //   value in binary format, or produce an error.
+  // * Applications are allowed to cache lookup results based on the
+  //   URL, or have them precompiled into a binary to avoid any
+  //   lookup. Therefore, binary compatibility needs to be preserved
+  //   on changes to types. (Use versioned type names to manage
+  //   breaking changes.)
+  //
+  // Schemes other than `http`, `https` (or the empty scheme) might be
+  // used with implementation specific semantics.
+  //
+  string type_url = 1;
+
+  // Must be a valid serialized protocol buffer of the above specified type.
+  bytes value = 2;
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/any_test.go b/vendor/github.com/golang/protobuf/ptypes/any_test.go
new file mode 100644
index 000000000..ed675b489
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/any_test.go
@@ -0,0 +1,113 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2016 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package ptypes
+
+import (
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+	pb "github.com/golang/protobuf/protoc-gen-go/descriptor"
+	"github.com/golang/protobuf/ptypes/any"
+)
+
+func TestMarshalUnmarshal(t *testing.T) {
+	orig := &any.Any{Value: []byte("test")}
+
+	packed, err := MarshalAny(orig)
+	if err != nil {
+		t.Errorf("MarshalAny(%+v): got: _, %v exp: _, nil", orig, err)
+	}
+
+	unpacked := &any.Any{}
+	err = UnmarshalAny(packed, unpacked)
+	if err != nil || !proto.Equal(unpacked, orig) {
+		t.Errorf("got: %v, %+v; want nil, %+v", err, unpacked, orig)
+	}
+}
+
+func TestIs(t *testing.T) {
+	a, err := MarshalAny(&pb.FileDescriptorProto{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if Is(a, &pb.DescriptorProto{}) {
+		t.Error("FileDescriptorProto is not a DescriptorProto, but Is says it is")
+	}
+	if !Is(a, &pb.FileDescriptorProto{}) {
+		t.Error("FileDescriptorProto is indeed a FileDescriptorProto, but Is says it is not")
+	}
+}
+
+func TestIsDifferentUrlPrefixes(t *testing.T) {
+	m := &pb.FileDescriptorProto{}
+	a := &any.Any{TypeUrl: "foo/bar/" + proto.MessageName(m)}
+	if !Is(a, m) {
+		t.Errorf("message with type url %q didn't satisfy Is for type %q", a.TypeUrl, proto.MessageName(m))
+	}
+}
+
+func TestUnmarshalDynamic(t *testing.T) {
+	want := &pb.FileDescriptorProto{Name: proto.String("foo")}
+	a, err := MarshalAny(want)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var got DynamicAny
+	if err := UnmarshalAny(a, &got); err != nil {
+		t.Fatal(err)
+	}
+	if !proto.Equal(got.Message, want) {
+		t.Errorf("invalid result from UnmarshalAny, got %q want %q", got.Message, want)
+	}
+}
+
+func TestEmpty(t *testing.T) {
+	want := &pb.FileDescriptorProto{}
+	a, err := MarshalAny(want)
+	if err != nil {
+		t.Fatal(err)
+	}
+	got, err := Empty(a)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !proto.Equal(got, want) {
+		t.Errorf("unequal empty message, got %q, want %q", got, want)
+	}
+
+	// that's a valid type_url for a message which shouldn't be linked into this
+	// test binary. We want an error.
+	a.TypeUrl = "type.googleapis.com/google.protobuf.FieldMask"
+	if _, err := Empty(a); err == nil {
+		t.Errorf("got no error for an attempt to create a message of type %q, which shouldn't be linked in", a.TypeUrl)
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/doc.go b/vendor/github.com/golang/protobuf/ptypes/doc.go
new file mode 100644
index 000000000..c0d595da7
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/doc.go
@@ -0,0 +1,35 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2016 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/*
+Package ptypes contains code for interacting with well-known types.
+*/
+package ptypes
diff --git a/vendor/github.com/golang/protobuf/ptypes/duration.go b/vendor/github.com/golang/protobuf/ptypes/duration.go
new file mode 100644
index 000000000..65cb0f8eb
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/duration.go
@@ -0,0 +1,102 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2016 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package ptypes
+
+// This file implements conversions between google.protobuf.Duration
+// and time.Duration.
+
+import (
+	"errors"
+	"fmt"
+	"time"
+
+	durpb "github.com/golang/protobuf/ptypes/duration"
+)
+
+const (
+	// Range of a durpb.Duration in seconds, as specified in
+	// google/protobuf/duration.proto. This is about 10,000 years in seconds.
+	maxSeconds = int64(10000 * 365.25 * 24 * 60 * 60)
+	minSeconds = -maxSeconds
+)
+
+// validateDuration determines whether the durpb.Duration is valid according to the
+// definition in google/protobuf/duration.proto. A valid durpb.Duration
+// may still be too large to fit into a time.Duration (the range of durpb.Duration
+// is about 10,000 years, and the range of time.Duration is about 290).
+func validateDuration(d *durpb.Duration) error {
+	if d == nil {
+		return errors.New("duration: nil Duration")
+	}
+	if d.Seconds < minSeconds || d.Seconds > maxSeconds {
+		return fmt.Errorf("duration: %v: seconds out of range", d)
+	}
+	if d.Nanos <= -1e9 || d.Nanos >= 1e9 {
+		return fmt.Errorf("duration: %v: nanos out of range", d)
+	}
+	// Seconds and Nanos must have the same sign, unless d.Nanos is zero.
+	if (d.Seconds < 0 && d.Nanos > 0) || (d.Seconds > 0 && d.Nanos < 0) {
+		return fmt.Errorf("duration: %v: seconds and nanos have different signs", d)
+	}
+	return nil
+}
+
+// Duration converts a durpb.Duration to a time.Duration. Duration
+// returns an error if the durpb.Duration is invalid or is too large to be
+// represented in a time.Duration.
+func Duration(p *durpb.Duration) (time.Duration, error) {
+	if err := validateDuration(p); err != nil {
+		return 0, err
+	}
+	d := time.Duration(p.Seconds) * time.Second
+	if int64(d/time.Second) != p.Seconds {
+		return 0, fmt.Errorf("duration: %v is out of range for time.Duration", p)
+	}
+	if p.Nanos != 0 {
+		d += time.Duration(p.Nanos)
+		if (d < 0) != (p.Nanos < 0) {
+			return 0, fmt.Errorf("duration: %v is out of range for time.Duration", p)
+		}
+	}
+	return d, nil
+}
+
+// DurationProto converts a time.Duration to a durpb.Duration.
+func DurationProto(d time.Duration) *durpb.Duration {
+	nanos := d.Nanoseconds()
+	secs := nanos / 1e9
+	nanos -= secs * 1e9
+	return &durpb.Duration{
+		Seconds: secs,
+		Nanos:   int32(nanos),
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/duration/duration.pb.go b/vendor/github.com/golang/protobuf/ptypes/duration/duration.pb.go
new file mode 100644
index 000000000..569748346
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/duration/duration.pb.go
@@ -0,0 +1,114 @@
+// Code generated by protoc-gen-go.
+// source: github.com/golang/protobuf/ptypes/duration/duration.proto
+// DO NOT EDIT!
+
+/*
+Package duration is a generated protocol buffer package.
+
+It is generated from these files:
+	github.com/golang/protobuf/ptypes/duration/duration.proto
+
+It has these top-level messages:
+	Duration
+*/
+package duration
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+// A Duration represents a signed, fixed-length span of time represented
+// as a count of seconds and fractions of seconds at nanosecond
+// resolution. It is independent of any calendar and concepts like "day"
+// or "month". It is related to Timestamp in that the difference between
+// two Timestamp values is a Duration and it can be added or subtracted
+// from a Timestamp. Range is approximately +-10,000 years.
+//
+// Example 1: Compute Duration from two Timestamps in pseudo code.
+//
+//     Timestamp start = ...;
+//     Timestamp end = ...;
+//     Duration duration = ...;
+//
+//     duration.seconds = end.seconds - start.seconds;
+//     duration.nanos = end.nanos - start.nanos;
+//
+//     if (duration.seconds < 0 && duration.nanos > 0) {
+//       duration.seconds += 1;
+//       duration.nanos -= 1000000000;
+//     } else if (durations.seconds > 0 && duration.nanos < 0) {
+//       duration.seconds -= 1;
+//       duration.nanos += 1000000000;
+//     }
+//
+// Example 2: Compute Timestamp from Timestamp + Duration in pseudo code.
+//
+//     Timestamp start = ...;
+//     Duration duration = ...;
+//     Timestamp end = ...;
+//
+//     end.seconds = start.seconds + duration.seconds;
+//     end.nanos = start.nanos + duration.nanos;
+//
+//     if (end.nanos < 0) {
+//       end.seconds -= 1;
+//       end.nanos += 1000000000;
+//     } else if (end.nanos >= 1000000000) {
+//       end.seconds += 1;
+//       end.nanos -= 1000000000;
+//     }
+//
+//
+type Duration struct {
+	// Signed seconds of the span of time. Must be from -315,576,000,000
+	// to +315,576,000,000 inclusive.
+	Seconds int64 `protobuf:"varint,1,opt,name=seconds" json:"seconds,omitempty"`
+	// Signed fractions of a second at nanosecond resolution of the span
+	// of time. Durations less than one second are represented with a 0
+	// `seconds` field and a positive or negative `nanos` field. For durations
+	// of one second or more, a non-zero value for the `nanos` field must be
+	// of the same sign as the `seconds` field. Must be from -999,999,999
+	// to +999,999,999 inclusive.
+	Nanos int32 `protobuf:"varint,2,opt,name=nanos" json:"nanos,omitempty"`
+}
+
+func (m *Duration) Reset()                    { *m = Duration{} }
+func (m *Duration) String() string            { return proto.CompactTextString(m) }
+func (*Duration) ProtoMessage()               {}
+func (*Duration) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+func (*Duration) XXX_WellKnownType() string   { return "Duration" }
+
+func init() {
+	proto.RegisterType((*Duration)(nil), "google.protobuf.Duration")
+}
+
+func init() {
+	proto.RegisterFile("github.com/golang/protobuf/ptypes/duration/duration.proto", fileDescriptor0)
+}
+
+var fileDescriptor0 = []byte{
+	// 189 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0xb2, 0x4c, 0xcf, 0x2c, 0xc9,
+	0x28, 0x4d, 0xd2, 0x4b, 0xce, 0xcf, 0xd5, 0x4f, 0xcf, 0xcf, 0x49, 0xcc, 0x4b, 0xd7, 0x2f, 0x28,
+	0xca, 0x2f, 0xc9, 0x4f, 0x2a, 0x4d, 0xd3, 0x2f, 0x28, 0xa9, 0x2c, 0x48, 0x2d, 0xd6, 0x4f, 0x29,
+	0x2d, 0x4a, 0x2c, 0xc9, 0xcc, 0xcf, 0x83, 0x33, 0xf4, 0xc0, 0x2a, 0x84, 0xf8, 0xd3, 0xf3, 0xf3,
+	0xd3, 0x73, 0x52, 0xf5, 0x60, 0xea, 0x95, 0xac, 0xb8, 0x38, 0x5c, 0xa0, 0x4a, 0x84, 0x24, 0xb8,
+	0xd8, 0x8b, 0x53, 0x93, 0xf3, 0xf3, 0x52, 0x8a, 0x25, 0x18, 0x15, 0x18, 0x35, 0x98, 0x83, 0x60,
+	0x5c, 0x21, 0x11, 0x2e, 0xd6, 0xbc, 0xc4, 0xbc, 0xfc, 0x62, 0x09, 0x26, 0x05, 0x46, 0x0d, 0xd6,
+	0x20, 0x08, 0xc7, 0xa9, 0x86, 0x4b, 0x38, 0x39, 0x3f, 0x57, 0x0f, 0xcd, 0x48, 0x27, 0x5e, 0x98,
+	0x81, 0x01, 0x20, 0x91, 0x00, 0xc6, 0x28, 0x2d, 0xe2, 0xdd, 0xbb, 0x80, 0x91, 0x71, 0x11, 0x13,
+	0xb3, 0x7b, 0x80, 0xd3, 0x2a, 0x26, 0x39, 0x77, 0x88, 0xb9, 0x01, 0x50, 0xa5, 0x7a, 0xe1, 0xa9,
+	0x39, 0x39, 0xde, 0x79, 0xf9, 0xe5, 0x79, 0x21, 0x20, 0x2d, 0x49, 0x6c, 0x60, 0x33, 0x8c, 0x01,
+	0x01, 0x00, 0x00, 0xff, 0xff, 0x62, 0xfb, 0xb1, 0x51, 0x0e, 0x01, 0x00, 0x00,
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/duration/duration.proto b/vendor/github.com/golang/protobuf/ptypes/duration/duration.proto
new file mode 100644
index 000000000..96c1796d6
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/duration/duration.proto
@@ -0,0 +1,98 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto3";
+
+package google.protobuf;
+
+option csharp_namespace = "Google.Protobuf.WellKnownTypes";
+option go_package = "github.com/golang/protobuf/ptypes/duration";
+option java_package = "com.google.protobuf";
+option java_outer_classname = "DurationProto";
+option java_multiple_files = true;
+option java_generate_equals_and_hash = true;
+option objc_class_prefix = "GPB";
+
+// A Duration represents a signed, fixed-length span of time represented
+// as a count of seconds and fractions of seconds at nanosecond
+// resolution. It is independent of any calendar and concepts like "day"
+// or "month". It is related to Timestamp in that the difference between
+// two Timestamp values is a Duration and it can be added or subtracted
+// from a Timestamp. Range is approximately +-10,000 years.
+//
+// Example 1: Compute Duration from two Timestamps in pseudo code.
+//
+//     Timestamp start = ...;
+//     Timestamp end = ...;
+//     Duration duration = ...;
+//
+//     duration.seconds = end.seconds - start.seconds;
+//     duration.nanos = end.nanos - start.nanos;
+//
+//     if (duration.seconds < 0 && duration.nanos > 0) {
+//       duration.seconds += 1;
+//       duration.nanos -= 1000000000;
+//     } else if (durations.seconds > 0 && duration.nanos < 0) {
+//       duration.seconds -= 1;
+//       duration.nanos += 1000000000;
+//     }
+//
+// Example 2: Compute Timestamp from Timestamp + Duration in pseudo code.
+//
+//     Timestamp start = ...;
+//     Duration duration = ...;
+//     Timestamp end = ...;
+//
+//     end.seconds = start.seconds + duration.seconds;
+//     end.nanos = start.nanos + duration.nanos;
+//
+//     if (end.nanos < 0) {
+//       end.seconds -= 1;
+//       end.nanos += 1000000000;
+//     } else if (end.nanos >= 1000000000) {
+//       end.seconds += 1;
+//       end.nanos -= 1000000000;
+//     }
+//
+//
+message Duration {
+
+  // Signed seconds of the span of time. Must be from -315,576,000,000
+  // to +315,576,000,000 inclusive.
+  int64 seconds = 1;
+
+  // Signed fractions of a second at nanosecond resolution of the span
+  // of time. Durations less than one second are represented with a 0
+  // `seconds` field and a positive or negative `nanos` field. For durations
+  // of one second or more, a non-zero value for the `nanos` field must be
+  // of the same sign as the `seconds` field. Must be from -999,999,999
+  // to +999,999,999 inclusive.
+  int32 nanos = 2;
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/duration_test.go b/vendor/github.com/golang/protobuf/ptypes/duration_test.go
new file mode 100644
index 000000000..e761289f1
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/duration_test.go
@@ -0,0 +1,121 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2016 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package ptypes
+
+import (
+	"math"
+	"testing"
+	"time"
+
+	"github.com/golang/protobuf/proto"
+	durpb "github.com/golang/protobuf/ptypes/duration"
+)
+
+const (
+	minGoSeconds = math.MinInt64 / int64(1e9)
+	maxGoSeconds = math.MaxInt64 / int64(1e9)
+)
+
+var durationTests = []struct {
+	proto   *durpb.Duration
+	isValid bool
+	inRange bool
+	dur     time.Duration
+}{
+	// The zero duration.
+	{&durpb.Duration{0, 0}, true, true, 0},
+	// Some ordinary non-zero durations.
+	{&durpb.Duration{100, 0}, true, true, 100 * time.Second},
+	{&durpb.Duration{-100, 0}, true, true, -100 * time.Second},
+	{&durpb.Duration{100, 987}, true, true, 100*time.Second + 987},
+	{&durpb.Duration{-100, -987}, true, true, -(100*time.Second + 987)},
+	// The largest duration representable in Go.
+	{&durpb.Duration{maxGoSeconds, int32(math.MaxInt64 - 1e9*maxGoSeconds)}, true, true, math.MaxInt64},
+	// The smallest duration representable in Go.
+	{&durpb.Duration{minGoSeconds, int32(math.MinInt64 - 1e9*minGoSeconds)}, true, true, math.MinInt64},
+	{nil, false, false, 0},
+	{&durpb.Duration{-100, 987}, false, false, 0},
+	{&durpb.Duration{100, -987}, false, false, 0},
+	{&durpb.Duration{math.MinInt64, 0}, false, false, 0},
+	{&durpb.Duration{math.MaxInt64, 0}, false, false, 0},
+	// The largest valid duration.
+	{&durpb.Duration{maxSeconds, 1e9 - 1}, true, false, 0},
+	// The smallest valid duration.
+	{&durpb.Duration{minSeconds, -(1e9 - 1)}, true, false, 0},
+	// The smallest invalid duration above the valid range.
+	{&durpb.Duration{maxSeconds + 1, 0}, false, false, 0},
+	// The largest invalid duration below the valid range.
+	{&durpb.Duration{minSeconds - 1, -(1e9 - 1)}, false, false, 0},
+	// One nanosecond past the largest duration representable in Go.
+	{&durpb.Duration{maxGoSeconds, int32(math.MaxInt64-1e9*maxGoSeconds) + 1}, true, false, 0},
+	// One nanosecond past the smallest duration representable in Go.
+	{&durpb.Duration{minGoSeconds, int32(math.MinInt64-1e9*minGoSeconds) - 1}, true, false, 0},
+	// One second past the largest duration representable in Go.
+	{&durpb.Duration{maxGoSeconds + 1, int32(math.MaxInt64 - 1e9*maxGoSeconds)}, true, false, 0},
+	// One second past the smallest duration representable in Go.
+	{&durpb.Duration{minGoSeconds - 1, int32(math.MinInt64 - 1e9*minGoSeconds)}, true, false, 0},
+}
+
+func TestValidateDuration(t *testing.T) {
+	for _, test := range durationTests {
+		err := validateDuration(test.proto)
+		gotValid := (err == nil)
+		if gotValid != test.isValid {
+			t.Errorf("validateDuration(%v) = %t, want %t", test.proto, gotValid, test.isValid)
+		}
+	}
+}
+
+func TestDuration(t *testing.T) {
+	for _, test := range durationTests {
+		got, err := Duration(test.proto)
+		gotOK := (err == nil)
+		wantOK := test.isValid && test.inRange
+		if gotOK != wantOK {
+			t.Errorf("Duration(%v) ok = %t, want %t", test.proto, gotOK, wantOK)
+		}
+		if err == nil && got != test.dur {
+			t.Errorf("Duration(%v) = %v, want %v", test.proto, got, test.dur)
+		}
+	}
+}
+
+func TestDurationProto(t *testing.T) {
+	for _, test := range durationTests {
+		if test.isValid && test.inRange {
+			got := DurationProto(test.dur)
+			if !proto.Equal(got, test.proto) {
+				t.Errorf("DurationProto(%v) = %v, want %v", test.dur, got, test.proto)
+			}
+		}
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/empty/empty.pb.go b/vendor/github.com/golang/protobuf/ptypes/empty/empty.pb.go
new file mode 100644
index 000000000..46c765a96
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/empty/empty.pb.go
@@ -0,0 +1,69 @@
+// Code generated by protoc-gen-go.
+// source: github.com/golang/protobuf/ptypes/empty/empty.proto
+// DO NOT EDIT!
+
+/*
+Package empty is a generated protocol buffer package.
+
+It is generated from these files:
+	github.com/golang/protobuf/ptypes/empty/empty.proto
+
+It has these top-level messages:
+	Empty
+*/
+package empty
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+// A generic empty message that you can re-use to avoid defining duplicated
+// empty messages in your APIs. A typical example is to use it as the request
+// or the response type of an API method. For instance:
+//
+//     service Foo {
+//       rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty);
+//     }
+//
+// The JSON representation for `Empty` is empty JSON object `{}`.
+type Empty struct {
+}
+
+func (m *Empty) Reset()                    { *m = Empty{} }
+func (m *Empty) String() string            { return proto.CompactTextString(m) }
+func (*Empty) ProtoMessage()               {}
+func (*Empty) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+func (*Empty) XXX_WellKnownType() string   { return "Empty" }
+
+func init() {
+	proto.RegisterType((*Empty)(nil), "google.protobuf.Empty")
+}
+
+func init() {
+	proto.RegisterFile("github.com/golang/protobuf/ptypes/empty/empty.proto", fileDescriptor0)
+}
+
+var fileDescriptor0 = []byte{
+	// 150 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0x32, 0x4e, 0xcf, 0x2c, 0xc9,
+	0x28, 0x4d, 0xd2, 0x4b, 0xce, 0xcf, 0xd5, 0x4f, 0xcf, 0xcf, 0x49, 0xcc, 0x4b, 0xd7, 0x2f, 0x28,
+	0xca, 0x2f, 0xc9, 0x4f, 0x2a, 0x4d, 0xd3, 0x2f, 0x28, 0xa9, 0x2c, 0x48, 0x2d, 0xd6, 0x4f, 0xcd,
+	0x2d, 0x28, 0xa9, 0x84, 0x90, 0x7a, 0x60, 0x39, 0x21, 0xfe, 0xf4, 0xfc, 0xfc, 0xf4, 0x9c, 0x54,
+	0x3d, 0x98, 0x4a, 0x25, 0x76, 0x2e, 0x56, 0x57, 0x90, 0xbc, 0x53, 0x25, 0x97, 0x70, 0x72, 0x7e,
+	0xae, 0x1e, 0x9a, 0xbc, 0x13, 0x17, 0x58, 0x36, 0x00, 0xc4, 0x0d, 0x60, 0x8c, 0x52, 0x27, 0xd2,
+	0xce, 0x05, 0x8c, 0x8c, 0x3f, 0x18, 0x19, 0x17, 0x31, 0x31, 0xbb, 0x07, 0x38, 0xad, 0x62, 0x92,
+	0x73, 0x87, 0x18, 0x1a, 0x00, 0x55, 0xaa, 0x17, 0x9e, 0x9a, 0x93, 0xe3, 0x9d, 0x97, 0x5f, 0x9e,
+	0x17, 0x02, 0xd2, 0x92, 0xc4, 0x06, 0x36, 0xc3, 0x18, 0x10, 0x00, 0x00, 0xff, 0xff, 0x7f, 0xbb,
+	0xf4, 0x0e, 0xd2, 0x00, 0x00, 0x00,
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/empty/empty.proto b/vendor/github.com/golang/protobuf/ptypes/empty/empty.proto
new file mode 100644
index 000000000..37f4cd10e
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/empty/empty.proto
@@ -0,0 +1,53 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto3";
+
+package google.protobuf;
+
+option csharp_namespace = "Google.Protobuf.WellKnownTypes";
+option go_package = "github.com/golang/protobuf/ptypes/empty";
+option java_package = "com.google.protobuf";
+option java_outer_classname = "EmptyProto";
+option java_multiple_files = true;
+option java_generate_equals_and_hash = true;
+option objc_class_prefix = "GPB";
+option cc_enable_arenas = true;
+
+// A generic empty message that you can re-use to avoid defining duplicated
+// empty messages in your APIs. A typical example is to use it as the request
+// or the response type of an API method. For instance:
+//
+//     service Foo {
+//       rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty);
+//     }
+//
+// The JSON representation for `Empty` is empty JSON object `{}`.
+message Empty {}
diff --git a/vendor/github.com/golang/protobuf/ptypes/regen.sh b/vendor/github.com/golang/protobuf/ptypes/regen.sh
new file mode 100755
index 000000000..2a5b4e8bd
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/regen.sh
@@ -0,0 +1,66 @@
+#!/bin/bash -e
+#
+# This script fetches and rebuilds the "well-known types" protocol buffers.
+# To run this you will need protoc and goprotobuf installed;
+# see https://github.com/golang/protobuf for instructions.
+# You also need Go and Git installed.
+
+PKG=github.com/golang/protobuf/ptypes
+UPSTREAM=https://github.com/google/protobuf
+UPSTREAM_SUBDIR=src/google/protobuf
+PROTO_FILES='
+  any.proto
+  duration.proto
+  empty.proto
+  struct.proto
+  timestamp.proto
+  wrappers.proto
+'
+
+function die() {
+  echo 1>&2 $*
+  exit 1
+}
+
+# Sanity check that the right tools are accessible.
+for tool in go git protoc protoc-gen-go; do
+  q=$(which $tool) || die "didn't find $tool"
+  echo 1>&2 "$tool: $q"
+done
+
+tmpdir=$(mktemp -d -t regen-wkt.XXXXXX)
+trap 'rm -rf $tmpdir' EXIT
+
+echo -n 1>&2 "finding package dir... "
+pkgdir=$(go list -f '{{.Dir}}' $PKG)
+echo 1>&2 $pkgdir
+base=$(echo $pkgdir | sed "s,/$PKG\$,,")
+echo 1>&2 "base: $base"
+cd $base
+
+echo 1>&2 "fetching latest protos... "
+git clone -q $UPSTREAM $tmpdir
+# Pass 1: build mapping from upstream filename to our filename.
+declare -A filename_map
+for f in $(cd $PKG && find * -name '*.proto'); do
+  echo -n 1>&2 "looking for latest version of $f... "
+  up=$(cd $tmpdir/$UPSTREAM_SUBDIR && find * -name $(basename $f) | grep -v /testdata/)
+  echo 1>&2 $up
+  if [ $(echo $up | wc -w) != "1" ]; then
+    die "not exactly one match"
+  fi
+  filename_map[$up]=$f
+done
+# Pass 2: copy files
+for up in "${!filename_map[@]}"; do
+  f=${filename_map[$up]}
+  shortname=$(basename $f | sed 's,\.proto$,,')
+  cp $tmpdir/$UPSTREAM_SUBDIR/$up $PKG/$f
+done
+
+# Run protoc once per package.
+for dir in $(find $PKG -name '*.proto' | xargs dirname | sort | uniq); do
+  echo 1>&2 "* $dir"
+  protoc --go_out=. $dir/*.proto
+done
+echo 1>&2 "All OK"
diff --git a/vendor/github.com/golang/protobuf/ptypes/struct/struct.pb.go b/vendor/github.com/golang/protobuf/ptypes/struct/struct.pb.go
new file mode 100644
index 000000000..197042ed5
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/struct/struct.pb.go
@@ -0,0 +1,382 @@
+// Code generated by protoc-gen-go.
+// source: github.com/golang/protobuf/ptypes/struct/struct.proto
+// DO NOT EDIT!
+
+/*
+Package structpb is a generated protocol buffer package.
+
+It is generated from these files:
+	github.com/golang/protobuf/ptypes/struct/struct.proto
+
+It has these top-level messages:
+	Struct
+	Value
+	ListValue
+*/
+package structpb
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+// `NullValue` is a singleton enumeration to represent the null value for the
+// `Value` type union.
+//
+//  The JSON representation for `NullValue` is JSON `null`.
+type NullValue int32
+
+const (
+	// Null value.
+	NullValue_NULL_VALUE NullValue = 0
+)
+
+var NullValue_name = map[int32]string{
+	0: "NULL_VALUE",
+}
+var NullValue_value = map[string]int32{
+	"NULL_VALUE": 0,
+}
+
+func (x NullValue) String() string {
+	return proto.EnumName(NullValue_name, int32(x))
+}
+func (NullValue) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+func (NullValue) XXX_WellKnownType() string       { return "NullValue" }
+
+// `Struct` represents a structured data value, consisting of fields
+// which map to dynamically typed values. In some languages, `Struct`
+// might be supported by a native representation. For example, in
+// scripting languages like JS a struct is represented as an
+// object. The details of that representation are described together
+// with the proto support for the language.
+//
+// The JSON representation for `Struct` is JSON object.
+type Struct struct {
+	// Unordered map of dynamically typed values.
+	Fields map[string]*Value `protobuf:"bytes,1,rep,name=fields" json:"fields,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+}
+
+func (m *Struct) Reset()                    { *m = Struct{} }
+func (m *Struct) String() string            { return proto.CompactTextString(m) }
+func (*Struct) ProtoMessage()               {}
+func (*Struct) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+func (*Struct) XXX_WellKnownType() string   { return "Struct" }
+
+func (m *Struct) GetFields() map[string]*Value {
+	if m != nil {
+		return m.Fields
+	}
+	return nil
+}
+
+// `Value` represents a dynamically typed value which can be either
+// null, a number, a string, a boolean, a recursive struct value, or a
+// list of values. A producer of value is expected to set one of that
+// variants, absence of any variant indicates an error.
+//
+// The JSON representation for `Value` is JSON value.
+type Value struct {
+	// The kind of value.
+	//
+	// Types that are valid to be assigned to Kind:
+	//	*Value_NullValue
+	//	*Value_NumberValue
+	//	*Value_StringValue
+	//	*Value_BoolValue
+	//	*Value_StructValue
+	//	*Value_ListValue
+	Kind isValue_Kind `protobuf_oneof:"kind"`
+}
+
+func (m *Value) Reset()                    { *m = Value{} }
+func (m *Value) String() string            { return proto.CompactTextString(m) }
+func (*Value) ProtoMessage()               {}
+func (*Value) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+func (*Value) XXX_WellKnownType() string   { return "Value" }
+
+type isValue_Kind interface {
+	isValue_Kind()
+}
+
+type Value_NullValue struct {
+	NullValue NullValue `protobuf:"varint,1,opt,name=null_value,json=nullValue,enum=google.protobuf.NullValue,oneof"`
+}
+type Value_NumberValue struct {
+	NumberValue float64 `protobuf:"fixed64,2,opt,name=number_value,json=numberValue,oneof"`
+}
+type Value_StringValue struct {
+	StringValue string `protobuf:"bytes,3,opt,name=string_value,json=stringValue,oneof"`
+}
+type Value_BoolValue struct {
+	BoolValue bool `protobuf:"varint,4,opt,name=bool_value,json=boolValue,oneof"`
+}
+type Value_StructValue struct {
+	StructValue *Struct `protobuf:"bytes,5,opt,name=struct_value,json=structValue,oneof"`
+}
+type Value_ListValue struct {
+	ListValue *ListValue `protobuf:"bytes,6,opt,name=list_value,json=listValue,oneof"`
+}
+
+func (*Value_NullValue) isValue_Kind()   {}
+func (*Value_NumberValue) isValue_Kind() {}
+func (*Value_StringValue) isValue_Kind() {}
+func (*Value_BoolValue) isValue_Kind()   {}
+func (*Value_StructValue) isValue_Kind() {}
+func (*Value_ListValue) isValue_Kind()   {}
+
+func (m *Value) GetKind() isValue_Kind {
+	if m != nil {
+		return m.Kind
+	}
+	return nil
+}
+
+func (m *Value) GetNullValue() NullValue {
+	if x, ok := m.GetKind().(*Value_NullValue); ok {
+		return x.NullValue
+	}
+	return NullValue_NULL_VALUE
+}
+
+func (m *Value) GetNumberValue() float64 {
+	if x, ok := m.GetKind().(*Value_NumberValue); ok {
+		return x.NumberValue
+	}
+	return 0
+}
+
+func (m *Value) GetStringValue() string {
+	if x, ok := m.GetKind().(*Value_StringValue); ok {
+		return x.StringValue
+	}
+	return ""
+}
+
+func (m *Value) GetBoolValue() bool {
+	if x, ok := m.GetKind().(*Value_BoolValue); ok {
+		return x.BoolValue
+	}
+	return false
+}
+
+func (m *Value) GetStructValue() *Struct {
+	if x, ok := m.GetKind().(*Value_StructValue); ok {
+		return x.StructValue
+	}
+	return nil
+}
+
+func (m *Value) GetListValue() *ListValue {
+	if x, ok := m.GetKind().(*Value_ListValue); ok {
+		return x.ListValue
+	}
+	return nil
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*Value) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _Value_OneofMarshaler, _Value_OneofUnmarshaler, _Value_OneofSizer, []interface{}{
+		(*Value_NullValue)(nil),
+		(*Value_NumberValue)(nil),
+		(*Value_StringValue)(nil),
+		(*Value_BoolValue)(nil),
+		(*Value_StructValue)(nil),
+		(*Value_ListValue)(nil),
+	}
+}
+
+func _Value_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*Value)
+	// kind
+	switch x := m.Kind.(type) {
+	case *Value_NullValue:
+		b.EncodeVarint(1<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.NullValue))
+	case *Value_NumberValue:
+		b.EncodeVarint(2<<3 | proto.WireFixed64)
+		b.EncodeFixed64(math.Float64bits(x.NumberValue))
+	case *Value_StringValue:
+		b.EncodeVarint(3<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.StringValue)
+	case *Value_BoolValue:
+		t := uint64(0)
+		if x.BoolValue {
+			t = 1
+		}
+		b.EncodeVarint(4<<3 | proto.WireVarint)
+		b.EncodeVarint(t)
+	case *Value_StructValue:
+		b.EncodeVarint(5<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.StructValue); err != nil {
+			return err
+		}
+	case *Value_ListValue:
+		b.EncodeVarint(6<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.ListValue); err != nil {
+			return err
+		}
+	case nil:
+	default:
+		return fmt.Errorf("Value.Kind has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _Value_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*Value)
+	switch tag {
+	case 1: // kind.null_value
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Kind = &Value_NullValue{NullValue(x)}
+		return true, err
+	case 2: // kind.number_value
+		if wire != proto.WireFixed64 {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeFixed64()
+		m.Kind = &Value_NumberValue{math.Float64frombits(x)}
+		return true, err
+	case 3: // kind.string_value
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Kind = &Value_StringValue{x}
+		return true, err
+	case 4: // kind.bool_value
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.Kind = &Value_BoolValue{x != 0}
+		return true, err
+	case 5: // kind.struct_value
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(Struct)
+		err := b.DecodeMessage(msg)
+		m.Kind = &Value_StructValue{msg}
+		return true, err
+	case 6: // kind.list_value
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(ListValue)
+		err := b.DecodeMessage(msg)
+		m.Kind = &Value_ListValue{msg}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _Value_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*Value)
+	// kind
+	switch x := m.Kind.(type) {
+	case *Value_NullValue:
+		n += proto.SizeVarint(1<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.NullValue))
+	case *Value_NumberValue:
+		n += proto.SizeVarint(2<<3 | proto.WireFixed64)
+		n += 8
+	case *Value_StringValue:
+		n += proto.SizeVarint(3<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.StringValue)))
+		n += len(x.StringValue)
+	case *Value_BoolValue:
+		n += proto.SizeVarint(4<<3 | proto.WireVarint)
+		n += 1
+	case *Value_StructValue:
+		s := proto.Size(x.StructValue)
+		n += proto.SizeVarint(5<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case *Value_ListValue:
+		s := proto.Size(x.ListValue)
+		n += proto.SizeVarint(6<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+// `ListValue` is a wrapper around a repeated field of values.
+//
+// The JSON representation for `ListValue` is JSON array.
+type ListValue struct {
+	// Repeated field of dynamically typed values.
+	Values []*Value `protobuf:"bytes,1,rep,name=values" json:"values,omitempty"`
+}
+
+func (m *ListValue) Reset()                    { *m = ListValue{} }
+func (m *ListValue) String() string            { return proto.CompactTextString(m) }
+func (*ListValue) ProtoMessage()               {}
+func (*ListValue) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+func (*ListValue) XXX_WellKnownType() string   { return "ListValue" }
+
+func (m *ListValue) GetValues() []*Value {
+	if m != nil {
+		return m.Values
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterType((*Struct)(nil), "google.protobuf.Struct")
+	proto.RegisterType((*Value)(nil), "google.protobuf.Value")
+	proto.RegisterType((*ListValue)(nil), "google.protobuf.ListValue")
+	proto.RegisterEnum("google.protobuf.NullValue", NullValue_name, NullValue_value)
+}
+
+func init() {
+	proto.RegisterFile("github.com/golang/protobuf/ptypes/struct/struct.proto", fileDescriptor0)
+}
+
+var fileDescriptor0 = []byte{
+	// 416 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x8c, 0x92, 0x41, 0x8b, 0xd3, 0x40,
+	0x14, 0x80, 0x3b, 0xc9, 0x36, 0x98, 0x17, 0x59, 0x97, 0x11, 0xb4, 0xac, 0xa0, 0xa1, 0x7b, 0x09,
+	0x22, 0x09, 0x56, 0x04, 0x31, 0x5e, 0x0c, 0xac, 0xbb, 0x60, 0x58, 0x62, 0x74, 0x57, 0xf0, 0x52,
+	0x9a, 0x34, 0x8d, 0xa1, 0xd3, 0x99, 0x90, 0xcc, 0x28, 0x3d, 0xfa, 0x2f, 0x3c, 0x8a, 0x47, 0x8f,
+	0xfe, 0x42, 0x99, 0x99, 0x24, 0x4a, 0x4b, 0xc1, 0xd3, 0xf4, 0xbd, 0xf9, 0xde, 0x37, 0xef, 0xbd,
+	0x06, 0x9e, 0x97, 0x15, 0xff, 0x2c, 0x32, 0x3f, 0x67, 0x9b, 0xa0, 0x64, 0x64, 0x41, 0xcb, 0xa0,
+	0x6e, 0x18, 0x67, 0x99, 0x58, 0x05, 0x35, 0xdf, 0xd6, 0x45, 0x1b, 0xb4, 0xbc, 0x11, 0x39, 0xef,
+	0x0e, 0x5f, 0xdd, 0xe2, 0x3b, 0x25, 0x63, 0x25, 0x29, 0xfc, 0x9e, 0x9d, 0x7e, 0x47, 0x60, 0xbd,
+	0x57, 0x04, 0x0e, 0xc1, 0x5a, 0x55, 0x05, 0x59, 0xb6, 0x13, 0xe4, 0x9a, 0x9e, 0x33, 0x3b, 0xf3,
+	0x77, 0x60, 0x5f, 0x83, 0xfe, 0x1b, 0x45, 0x9d, 0x53, 0xde, 0x6c, 0xd3, 0xae, 0xe4, 0xf4, 0x1d,
+	0x38, 0xff, 0xa4, 0xf1, 0x09, 0x98, 0xeb, 0x62, 0x3b, 0x41, 0x2e, 0xf2, 0xec, 0x54, 0xfe, 0xc4,
+	0x4f, 0x60, 0xfc, 0x65, 0x41, 0x44, 0x31, 0x31, 0x5c, 0xe4, 0x39, 0xb3, 0x7b, 0x7b, 0xf2, 0x1b,
+	0x79, 0x9b, 0x6a, 0xe8, 0xa5, 0xf1, 0x02, 0x4d, 0x7f, 0x1b, 0x30, 0x56, 0x49, 0x1c, 0x02, 0x50,
+	0x41, 0xc8, 0x5c, 0x0b, 0xa4, 0xf4, 0x78, 0x76, 0xba, 0x27, 0xb8, 0x12, 0x84, 0x28, 0xfe, 0x72,
+	0x94, 0xda, 0xb4, 0x0f, 0xf0, 0x19, 0xdc, 0xa6, 0x62, 0x93, 0x15, 0xcd, 0xfc, 0xef, 0xfb, 0xe8,
+	0x72, 0x94, 0x3a, 0x3a, 0x3b, 0x40, 0x2d, 0x6f, 0x2a, 0x5a, 0x76, 0x90, 0x29, 0x1b, 0x97, 0x90,
+	0xce, 0x6a, 0xe8, 0x11, 0x40, 0xc6, 0x58, 0xdf, 0xc6, 0x91, 0x8b, 0xbc, 0x5b, 0xf2, 0x29, 0x99,
+	0xd3, 0xc0, 0x2b, 0x65, 0x11, 0x39, 0xef, 0x90, 0xb1, 0x1a, 0xf5, 0xfe, 0x81, 0x3d, 0x76, 0x7a,
+	0x91, 0xf3, 0x61, 0x4a, 0x52, 0xb5, 0x7d, 0xad, 0xa5, 0x6a, 0xf7, 0xa7, 0x8c, 0xab, 0x96, 0x0f,
+	0x53, 0x92, 0x3e, 0x88, 0x2c, 0x38, 0x5a, 0x57, 0x74, 0x39, 0x0d, 0xc1, 0x1e, 0x08, 0xec, 0x83,
+	0xa5, 0x64, 0xfd, 0x3f, 0x7a, 0x68, 0xe9, 0x1d, 0xf5, 0xf8, 0x01, 0xd8, 0xc3, 0x12, 0xf1, 0x31,
+	0xc0, 0xd5, 0x75, 0x1c, 0xcf, 0x6f, 0x5e, 0xc7, 0xd7, 0xe7, 0x27, 0xa3, 0xe8, 0x1b, 0x82, 0xbb,
+	0x39, 0xdb, 0xec, 0x2a, 0x22, 0x47, 0x4f, 0x93, 0xc8, 0x38, 0x41, 0x9f, 0x9e, 0xfe, 0xef, 0x87,
+	0x19, 0xea, 0xa3, 0xce, 0x7e, 0x20, 0xf4, 0xd3, 0x30, 0x2f, 0x92, 0xe8, 0x97, 0xf1, 0xf0, 0x42,
+	0xcb, 0x93, 0xbe, 0xbf, 0x8f, 0x05, 0x21, 0x6f, 0x29, 0xfb, 0x4a, 0x3f, 0xc8, 0xca, 0xcc, 0x52,
+	0xaa, 0x67, 0x7f, 0x02, 0x00, 0x00, 0xff, 0xff, 0xbc, 0xcf, 0x6d, 0x50, 0xfe, 0x02, 0x00, 0x00,
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/struct/struct.proto b/vendor/github.com/golang/protobuf/ptypes/struct/struct.proto
new file mode 100644
index 000000000..beeba8118
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/struct/struct.proto
@@ -0,0 +1,96 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto3";
+
+package google.protobuf;
+
+option csharp_namespace = "Google.Protobuf.WellKnownTypes";
+option go_package = "github.com/golang/protobuf/ptypes/struct;structpb";
+option java_package = "com.google.protobuf";
+option java_outer_classname = "StructProto";
+option java_multiple_files = true;
+option java_generate_equals_and_hash = true;
+option objc_class_prefix = "GPB";
+
+
+// `Struct` represents a structured data value, consisting of fields
+// which map to dynamically typed values. In some languages, `Struct`
+// might be supported by a native representation. For example, in
+// scripting languages like JS a struct is represented as an
+// object. The details of that representation are described together
+// with the proto support for the language.
+//
+// The JSON representation for `Struct` is JSON object.
+message Struct {
+  // Unordered map of dynamically typed values.
+  map<string, Value> fields = 1;
+}
+
+// `Value` represents a dynamically typed value which can be either
+// null, a number, a string, a boolean, a recursive struct value, or a
+// list of values. A producer of value is expected to set one of that
+// variants, absence of any variant indicates an error.
+//
+// The JSON representation for `Value` is JSON value.
+message Value {
+  // The kind of value.
+  oneof kind {
+    // Represents a null value.
+    NullValue null_value = 1;
+    // Represents a double value.
+    double number_value = 2;
+    // Represents a string value.
+    string string_value = 3;
+    // Represents a boolean value.
+    bool bool_value = 4;
+    // Represents a structured value.
+    Struct struct_value = 5;
+    // Represents a repeated `Value`.
+    ListValue list_value = 6;
+  }
+}
+
+// `NullValue` is a singleton enumeration to represent the null value for the
+// `Value` type union.
+//
+//  The JSON representation for `NullValue` is JSON `null`.
+enum NullValue {
+  // Null value.
+  NULL_VALUE = 0;
+}
+
+// `ListValue` is a wrapper around a repeated field of values.
+//
+// The JSON representation for `ListValue` is JSON array.
+message ListValue {
+  // Repeated field of dynamically typed values.
+  repeated Value values = 1;
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/timestamp.go b/vendor/github.com/golang/protobuf/ptypes/timestamp.go
new file mode 100644
index 000000000..1b3657622
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/timestamp.go
@@ -0,0 +1,125 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2016 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package ptypes
+
+// This file implements operations on google.protobuf.Timestamp.
+
+import (
+	"errors"
+	"fmt"
+	"time"
+
+	tspb "github.com/golang/protobuf/ptypes/timestamp"
+)
+
+const (
+	// Seconds field of the earliest valid Timestamp.
+	// This is time.Date(1, 1, 1, 0, 0, 0, 0, time.UTC).Unix().
+	minValidSeconds = -62135596800
+	// Seconds field just after the latest valid Timestamp.
+	// This is time.Date(10000, 1, 1, 0, 0, 0, 0, time.UTC).Unix().
+	maxValidSeconds = 253402300800
+)
+
+// validateTimestamp determines whether a Timestamp is valid.
+// A valid timestamp represents a time in the range
+// [0001-01-01, 10000-01-01) and has a Nanos field
+// in the range [0, 1e9).
+//
+// If the Timestamp is valid, validateTimestamp returns nil.
+// Otherwise, it returns an error that describes
+// the problem.
+//
+// Every valid Timestamp can be represented by a time.Time, but the converse is not true.
+func validateTimestamp(ts *tspb.Timestamp) error {
+	if ts == nil {
+		return errors.New("timestamp: nil Timestamp")
+	}
+	if ts.Seconds < minValidSeconds {
+		return fmt.Errorf("timestamp: %v before 0001-01-01", ts)
+	}
+	if ts.Seconds >= maxValidSeconds {
+		return fmt.Errorf("timestamp: %v after 10000-01-01", ts)
+	}
+	if ts.Nanos < 0 || ts.Nanos >= 1e9 {
+		return fmt.Errorf("timestamp: %v: nanos not in range [0, 1e9)", ts)
+	}
+	return nil
+}
+
+// Timestamp converts a google.protobuf.Timestamp proto to a time.Time.
+// It returns an error if the argument is invalid.
+//
+// Unlike most Go functions, if Timestamp returns an error, the first return value
+// is not the zero time.Time. Instead, it is the value obtained from the
+// time.Unix function when passed the contents of the Timestamp, in the UTC
+// locale. This may or may not be a meaningful time; many invalid Timestamps
+// do map to valid time.Times.
+//
+// A nil Timestamp returns an error. The first return value in that case is
+// undefined.
+func Timestamp(ts *tspb.Timestamp) (time.Time, error) {
+	// Don't return the zero value on error, because corresponds to a valid
+	// timestamp. Instead return whatever time.Unix gives us.
+	var t time.Time
+	if ts == nil {
+		t = time.Unix(0, 0).UTC() // treat nil like the empty Timestamp
+	} else {
+		t = time.Unix(ts.Seconds, int64(ts.Nanos)).UTC()
+	}
+	return t, validateTimestamp(ts)
+}
+
+// TimestampProto converts the time.Time to a google.protobuf.Timestamp proto.
+// It returns an error if the resulting Timestamp is invalid.
+func TimestampProto(t time.Time) (*tspb.Timestamp, error) {
+	seconds := t.Unix()
+	nanos := int32(t.Sub(time.Unix(seconds, 0)))
+	ts := &tspb.Timestamp{
+		Seconds: seconds,
+		Nanos:   nanos,
+	}
+	if err := validateTimestamp(ts); err != nil {
+		return nil, err
+	}
+	return ts, nil
+}
+
+// TimestampString returns the RFC 3339 string for valid Timestamps. For invalid
+// Timestamps, it returns an error message in parentheses.
+func TimestampString(ts *tspb.Timestamp) string {
+	t, err := Timestamp(ts)
+	if err != nil {
+		return fmt.Sprintf("(%v)", err)
+	}
+	return t.Format(time.RFC3339Nano)
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/timestamp/timestamp.pb.go b/vendor/github.com/golang/protobuf/ptypes/timestamp/timestamp.pb.go
new file mode 100644
index 000000000..ffcc51594
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/timestamp/timestamp.pb.go
@@ -0,0 +1,127 @@
+// Code generated by protoc-gen-go.
+// source: github.com/golang/protobuf/ptypes/timestamp/timestamp.proto
+// DO NOT EDIT!
+
+/*
+Package timestamp is a generated protocol buffer package.
+
+It is generated from these files:
+	github.com/golang/protobuf/ptypes/timestamp/timestamp.proto
+
+It has these top-level messages:
+	Timestamp
+*/
+package timestamp
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+// A Timestamp represents a point in time independent of any time zone
+// or calendar, represented as seconds and fractions of seconds at
+// nanosecond resolution in UTC Epoch time. It is encoded using the
+// Proleptic Gregorian Calendar which extends the Gregorian calendar
+// backwards to year one. It is encoded assuming all minutes are 60
+// seconds long, i.e. leap seconds are "smeared" so that no leap second
+// table is needed for interpretation. Range is from
+// 0001-01-01T00:00:00Z to 9999-12-31T23:59:59.999999999Z.
+// By restricting to that range, we ensure that we can convert to
+// and from  RFC 3339 date strings.
+// See [https://www.ietf.org/rfc/rfc3339.txt](https://www.ietf.org/rfc/rfc3339.txt).
+//
+// Example 1: Compute Timestamp from POSIX `time()`.
+//
+//     Timestamp timestamp;
+//     timestamp.set_seconds(time(NULL));
+//     timestamp.set_nanos(0);
+//
+// Example 2: Compute Timestamp from POSIX `gettimeofday()`.
+//
+//     struct timeval tv;
+//     gettimeofday(&tv, NULL);
+//
+//     Timestamp timestamp;
+//     timestamp.set_seconds(tv.tv_sec);
+//     timestamp.set_nanos(tv.tv_usec * 1000);
+//
+// Example 3: Compute Timestamp from Win32 `GetSystemTimeAsFileTime()`.
+//
+//     FILETIME ft;
+//     GetSystemTimeAsFileTime(&ft);
+//     UINT64 ticks = (((UINT64)ft.dwHighDateTime) << 32) | ft.dwLowDateTime;
+//
+//     // A Windows tick is 100 nanoseconds. Windows epoch 1601-01-01T00:00:00Z
+//     // is 11644473600 seconds before Unix epoch 1970-01-01T00:00:00Z.
+//     Timestamp timestamp;
+//     timestamp.set_seconds((INT64) ((ticks / 10000000) - 11644473600LL));
+//     timestamp.set_nanos((INT32) ((ticks % 10000000) * 100));
+//
+// Example 4: Compute Timestamp from Java `System.currentTimeMillis()`.
+//
+//     long millis = System.currentTimeMillis();
+//
+//     Timestamp timestamp = Timestamp.newBuilder().setSeconds(millis / 1000)
+//         .setNanos((int) ((millis % 1000) * 1000000)).build();
+//
+//
+// Example 5: Compute Timestamp from current time in Python.
+//
+//     now = time.time()
+//     seconds = int(now)
+//     nanos = int((now - seconds) * 10**9)
+//     timestamp = Timestamp(seconds=seconds, nanos=nanos)
+//
+//
+type Timestamp struct {
+	// Represents seconds of UTC time since Unix epoch
+	// 1970-01-01T00:00:00Z. Must be from from 0001-01-01T00:00:00Z to
+	// 9999-12-31T23:59:59Z inclusive.
+	Seconds int64 `protobuf:"varint,1,opt,name=seconds" json:"seconds,omitempty"`
+	// Non-negative fractions of a second at nanosecond resolution. Negative
+	// second values with fractions must still have non-negative nanos values
+	// that count forward in time. Must be from 0 to 999,999,999
+	// inclusive.
+	Nanos int32 `protobuf:"varint,2,opt,name=nanos" json:"nanos,omitempty"`
+}
+
+func (m *Timestamp) Reset()                    { *m = Timestamp{} }
+func (m *Timestamp) String() string            { return proto.CompactTextString(m) }
+func (*Timestamp) ProtoMessage()               {}
+func (*Timestamp) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+func (*Timestamp) XXX_WellKnownType() string   { return "Timestamp" }
+
+func init() {
+	proto.RegisterType((*Timestamp)(nil), "google.protobuf.Timestamp")
+}
+
+func init() {
+	proto.RegisterFile("github.com/golang/protobuf/ptypes/timestamp/timestamp.proto", fileDescriptor0)
+}
+
+var fileDescriptor0 = []byte{
+	// 194 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0xb2, 0x4e, 0xcf, 0x2c, 0xc9,
+	0x28, 0x4d, 0xd2, 0x4b, 0xce, 0xcf, 0xd5, 0x4f, 0xcf, 0xcf, 0x49, 0xcc, 0x4b, 0xd7, 0x2f, 0x28,
+	0xca, 0x2f, 0xc9, 0x4f, 0x2a, 0x4d, 0xd3, 0x2f, 0x28, 0xa9, 0x2c, 0x48, 0x2d, 0xd6, 0x2f, 0xc9,
+	0xcc, 0x4d, 0x2d, 0x2e, 0x49, 0xcc, 0x2d, 0x40, 0xb0, 0xf4, 0xc0, 0x6a, 0x84, 0xf8, 0xd3, 0xf3,
+	0xf3, 0xd3, 0x73, 0x52, 0xf5, 0x60, 0x3a, 0x94, 0xac, 0xb9, 0x38, 0x43, 0x60, 0x6a, 0x84, 0x24,
+	0xb8, 0xd8, 0x8b, 0x53, 0x93, 0xf3, 0xf3, 0x52, 0x8a, 0x25, 0x18, 0x15, 0x18, 0x35, 0x98, 0x83,
+	0x60, 0x5c, 0x21, 0x11, 0x2e, 0xd6, 0xbc, 0xc4, 0xbc, 0xfc, 0x62, 0x09, 0x26, 0x05, 0x46, 0x0d,
+	0xd6, 0x20, 0x08, 0xc7, 0xa9, 0x91, 0x91, 0x4b, 0x38, 0x39, 0x3f, 0x57, 0x0f, 0xcd, 0x50, 0x27,
+	0x3e, 0xb8, 0x91, 0x01, 0x20, 0xa1, 0x00, 0xc6, 0x28, 0x6d, 0x12, 0x1c, 0xbd, 0x80, 0x91, 0xf1,
+	0x07, 0x23, 0xe3, 0x22, 0x26, 0x66, 0xf7, 0x00, 0xa7, 0x55, 0x4c, 0x72, 0xee, 0x10, 0xc3, 0x03,
+	0xa0, 0xca, 0xf5, 0xc2, 0x53, 0x73, 0x72, 0xbc, 0xf3, 0xf2, 0xcb, 0xf3, 0x42, 0x40, 0xda, 0x92,
+	0xd8, 0xc0, 0xe6, 0x18, 0x03, 0x02, 0x00, 0x00, 0xff, 0xff, 0x17, 0x5f, 0xb7, 0xdc, 0x17, 0x01,
+	0x00, 0x00,
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/timestamp/timestamp.proto b/vendor/github.com/golang/protobuf/ptypes/timestamp/timestamp.proto
new file mode 100644
index 000000000..7992a8588
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/timestamp/timestamp.proto
@@ -0,0 +1,111 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto3";
+
+package google.protobuf;
+
+option csharp_namespace = "Google.Protobuf.WellKnownTypes";
+option cc_enable_arenas = true;
+option go_package = "github.com/golang/protobuf/ptypes/timestamp";
+option java_package = "com.google.protobuf";
+option java_outer_classname = "TimestampProto";
+option java_multiple_files = true;
+option java_generate_equals_and_hash = true;
+option objc_class_prefix = "GPB";
+
+// A Timestamp represents a point in time independent of any time zone
+// or calendar, represented as seconds and fractions of seconds at
+// nanosecond resolution in UTC Epoch time. It is encoded using the
+// Proleptic Gregorian Calendar which extends the Gregorian calendar
+// backwards to year one. It is encoded assuming all minutes are 60
+// seconds long, i.e. leap seconds are "smeared" so that no leap second
+// table is needed for interpretation. Range is from
+// 0001-01-01T00:00:00Z to 9999-12-31T23:59:59.999999999Z.
+// By restricting to that range, we ensure that we can convert to
+// and from  RFC 3339 date strings.
+// See [https://www.ietf.org/rfc/rfc3339.txt](https://www.ietf.org/rfc/rfc3339.txt).
+//
+// Example 1: Compute Timestamp from POSIX `time()`.
+//
+//     Timestamp timestamp;
+//     timestamp.set_seconds(time(NULL));
+//     timestamp.set_nanos(0);
+//
+// Example 2: Compute Timestamp from POSIX `gettimeofday()`.
+//
+//     struct timeval tv;
+//     gettimeofday(&tv, NULL);
+//
+//     Timestamp timestamp;
+//     timestamp.set_seconds(tv.tv_sec);
+//     timestamp.set_nanos(tv.tv_usec * 1000);
+//
+// Example 3: Compute Timestamp from Win32 `GetSystemTimeAsFileTime()`.
+//
+//     FILETIME ft;
+//     GetSystemTimeAsFileTime(&ft);
+//     UINT64 ticks = (((UINT64)ft.dwHighDateTime) << 32) | ft.dwLowDateTime;
+//
+//     // A Windows tick is 100 nanoseconds. Windows epoch 1601-01-01T00:00:00Z
+//     // is 11644473600 seconds before Unix epoch 1970-01-01T00:00:00Z.
+//     Timestamp timestamp;
+//     timestamp.set_seconds((INT64) ((ticks / 10000000) - 11644473600LL));
+//     timestamp.set_nanos((INT32) ((ticks % 10000000) * 100));
+//
+// Example 4: Compute Timestamp from Java `System.currentTimeMillis()`.
+//
+//     long millis = System.currentTimeMillis();
+//
+//     Timestamp timestamp = Timestamp.newBuilder().setSeconds(millis / 1000)
+//         .setNanos((int) ((millis % 1000) * 1000000)).build();
+//
+//
+// Example 5: Compute Timestamp from current time in Python.
+//
+//     now = time.time()
+//     seconds = int(now)
+//     nanos = int((now - seconds) * 10**9)
+//     timestamp = Timestamp(seconds=seconds, nanos=nanos)
+//
+//
+message Timestamp {
+
+  // Represents seconds of UTC time since Unix epoch
+  // 1970-01-01T00:00:00Z. Must be from from 0001-01-01T00:00:00Z to
+  // 9999-12-31T23:59:59Z inclusive.
+  int64 seconds = 1;
+
+  // Non-negative fractions of a second at nanosecond resolution. Negative
+  // second values with fractions must still have non-negative nanos values
+  // that count forward in time. Must be from 0 to 999,999,999
+  // inclusive.
+  int32 nanos = 2;
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/timestamp_test.go b/vendor/github.com/golang/protobuf/ptypes/timestamp_test.go
new file mode 100644
index 000000000..114a7f9fc
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/timestamp_test.go
@@ -0,0 +1,138 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2016 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package ptypes
+
+import (
+	"math"
+	"testing"
+	"time"
+
+	"github.com/golang/protobuf/proto"
+	tspb "github.com/golang/protobuf/ptypes/timestamp"
+)
+
+var tests = []struct {
+	ts    *tspb.Timestamp
+	valid bool
+	t     time.Time
+}{
+	// The timestamp representing the Unix epoch date.
+	{&tspb.Timestamp{0, 0}, true, utcDate(1970, 1, 1)},
+	// The smallest representable timestamp.
+	{&tspb.Timestamp{math.MinInt64, math.MinInt32}, false,
+		time.Unix(math.MinInt64, math.MinInt32).UTC()},
+	// The smallest representable timestamp with non-negative nanos.
+	{&tspb.Timestamp{math.MinInt64, 0}, false, time.Unix(math.MinInt64, 0).UTC()},
+	// The earliest valid timestamp.
+	{&tspb.Timestamp{minValidSeconds, 0}, true, utcDate(1, 1, 1)},
+	//"0001-01-01T00:00:00Z"},
+	// The largest representable timestamp.
+	{&tspb.Timestamp{math.MaxInt64, math.MaxInt32}, false,
+		time.Unix(math.MaxInt64, math.MaxInt32).UTC()},
+	// The largest representable timestamp with nanos in range.
+	{&tspb.Timestamp{math.MaxInt64, 1e9 - 1}, false,
+		time.Unix(math.MaxInt64, 1e9-1).UTC()},
+	// The largest valid timestamp.
+	{&tspb.Timestamp{maxValidSeconds - 1, 1e9 - 1}, true,
+		time.Date(9999, 12, 31, 23, 59, 59, 1e9-1, time.UTC)},
+	// The smallest invalid timestamp that is larger than the valid range.
+	{&tspb.Timestamp{maxValidSeconds, 0}, false, time.Unix(maxValidSeconds, 0).UTC()},
+	// A date before the epoch.
+	{&tspb.Timestamp{-281836800, 0}, true, utcDate(1961, 1, 26)},
+	// A date after the epoch.
+	{&tspb.Timestamp{1296000000, 0}, true, utcDate(2011, 1, 26)},
+	// A date after the epoch, in the middle of the day.
+	{&tspb.Timestamp{1296012345, 940483}, true,
+		time.Date(2011, 1, 26, 3, 25, 45, 940483, time.UTC)},
+}
+
+func TestValidateTimestamp(t *testing.T) {
+	for _, s := range tests {
+		got := validateTimestamp(s.ts)
+		if (got == nil) != s.valid {
+			t.Errorf("validateTimestamp(%v) = %v, want %v", s.ts, got, s.valid)
+		}
+	}
+}
+
+func TestTimestamp(t *testing.T) {
+	for _, s := range tests {
+		got, err := Timestamp(s.ts)
+		if (err == nil) != s.valid {
+			t.Errorf("Timestamp(%v) error = %v, but valid = %t", s.ts, err, s.valid)
+		} else if s.valid && got != s.t {
+			t.Errorf("Timestamp(%v) = %v, want %v", s.ts, got, s.t)
+		}
+	}
+	// Special case: a nil Timestamp is an error, but returns the 0 Unix time.
+	got, err := Timestamp(nil)
+	want := time.Unix(0, 0).UTC()
+	if got != want {
+		t.Errorf("Timestamp(nil) = %v, want %v", got, want)
+	}
+	if err == nil {
+		t.Errorf("Timestamp(nil) error = nil, expected error")
+	}
+}
+
+func TestTimestampProto(t *testing.T) {
+	for _, s := range tests {
+		got, err := TimestampProto(s.t)
+		if (err == nil) != s.valid {
+			t.Errorf("TimestampProto(%v) error = %v, but valid = %t", s.t, err, s.valid)
+		} else if s.valid && !proto.Equal(got, s.ts) {
+			t.Errorf("TimestampProto(%v) = %v, want %v", s.t, got, s.ts)
+		}
+	}
+	// No corresponding special case here: no time.Time results in a nil Timestamp.
+}
+
+func TestTimestampString(t *testing.T) {
+	for _, test := range []struct {
+		ts   *tspb.Timestamp
+		want string
+	}{
+		// Not much testing needed because presumably time.Format is
+		// well-tested.
+		{&tspb.Timestamp{0, 0}, "1970-01-01T00:00:00Z"},
+		{&tspb.Timestamp{minValidSeconds - 1, 0}, "(timestamp: seconds:-62135596801  before 0001-01-01)"},
+	} {
+		got := TimestampString(test.ts)
+		if got != test.want {
+			t.Errorf("TimestampString(%v) = %q, want %q", test.ts, got, test.want)
+		}
+	}
+}
+
+func utcDate(year, month, day int) time.Time {
+	return time.Date(year, time.Month(month), day, 0, 0, 0, 0, time.UTC)
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/wrappers/wrappers.pb.go b/vendor/github.com/golang/protobuf/ptypes/wrappers/wrappers.pb.go
new file mode 100644
index 000000000..5e52a81c7
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/wrappers/wrappers.pb.go
@@ -0,0 +1,200 @@
+// Code generated by protoc-gen-go.
+// source: github.com/golang/protobuf/ptypes/wrappers/wrappers.proto
+// DO NOT EDIT!
+
+/*
+Package wrappers is a generated protocol buffer package.
+
+It is generated from these files:
+	github.com/golang/protobuf/ptypes/wrappers/wrappers.proto
+
+It has these top-level messages:
+	DoubleValue
+	FloatValue
+	Int64Value
+	UInt64Value
+	Int32Value
+	UInt32Value
+	BoolValue
+	StringValue
+	BytesValue
+*/
+package wrappers
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+// Wrapper message for `double`.
+//
+// The JSON representation for `DoubleValue` is JSON number.
+type DoubleValue struct {
+	// The double value.
+	Value float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
+}
+
+func (m *DoubleValue) Reset()                    { *m = DoubleValue{} }
+func (m *DoubleValue) String() string            { return proto.CompactTextString(m) }
+func (*DoubleValue) ProtoMessage()               {}
+func (*DoubleValue) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+func (*DoubleValue) XXX_WellKnownType() string   { return "DoubleValue" }
+
+// Wrapper message for `float`.
+//
+// The JSON representation for `FloatValue` is JSON number.
+type FloatValue struct {
+	// The float value.
+	Value float32 `protobuf:"fixed32,1,opt,name=value" json:"value,omitempty"`
+}
+
+func (m *FloatValue) Reset()                    { *m = FloatValue{} }
+func (m *FloatValue) String() string            { return proto.CompactTextString(m) }
+func (*FloatValue) ProtoMessage()               {}
+func (*FloatValue) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+func (*FloatValue) XXX_WellKnownType() string   { return "FloatValue" }
+
+// Wrapper message for `int64`.
+//
+// The JSON representation for `Int64Value` is JSON string.
+type Int64Value struct {
+	// The int64 value.
+	Value int64 `protobuf:"varint,1,opt,name=value" json:"value,omitempty"`
+}
+
+func (m *Int64Value) Reset()                    { *m = Int64Value{} }
+func (m *Int64Value) String() string            { return proto.CompactTextString(m) }
+func (*Int64Value) ProtoMessage()               {}
+func (*Int64Value) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+func (*Int64Value) XXX_WellKnownType() string   { return "Int64Value" }
+
+// Wrapper message for `uint64`.
+//
+// The JSON representation for `UInt64Value` is JSON string.
+type UInt64Value struct {
+	// The uint64 value.
+	Value uint64 `protobuf:"varint,1,opt,name=value" json:"value,omitempty"`
+}
+
+func (m *UInt64Value) Reset()                    { *m = UInt64Value{} }
+func (m *UInt64Value) String() string            { return proto.CompactTextString(m) }
+func (*UInt64Value) ProtoMessage()               {}
+func (*UInt64Value) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
+func (*UInt64Value) XXX_WellKnownType() string   { return "UInt64Value" }
+
+// Wrapper message for `int32`.
+//
+// The JSON representation for `Int32Value` is JSON number.
+type Int32Value struct {
+	// The int32 value.
+	Value int32 `protobuf:"varint,1,opt,name=value" json:"value,omitempty"`
+}
+
+func (m *Int32Value) Reset()                    { *m = Int32Value{} }
+func (m *Int32Value) String() string            { return proto.CompactTextString(m) }
+func (*Int32Value) ProtoMessage()               {}
+func (*Int32Value) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
+func (*Int32Value) XXX_WellKnownType() string   { return "Int32Value" }
+
+// Wrapper message for `uint32`.
+//
+// The JSON representation for `UInt32Value` is JSON number.
+type UInt32Value struct {
+	// The uint32 value.
+	Value uint32 `protobuf:"varint,1,opt,name=value" json:"value,omitempty"`
+}
+
+func (m *UInt32Value) Reset()                    { *m = UInt32Value{} }
+func (m *UInt32Value) String() string            { return proto.CompactTextString(m) }
+func (*UInt32Value) ProtoMessage()               {}
+func (*UInt32Value) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} }
+func (*UInt32Value) XXX_WellKnownType() string   { return "UInt32Value" }
+
+// Wrapper message for `bool`.
+//
+// The JSON representation for `BoolValue` is JSON `true` and `false`.
+type BoolValue struct {
+	// The bool value.
+	Value bool `protobuf:"varint,1,opt,name=value" json:"value,omitempty"`
+}
+
+func (m *BoolValue) Reset()                    { *m = BoolValue{} }
+func (m *BoolValue) String() string            { return proto.CompactTextString(m) }
+func (*BoolValue) ProtoMessage()               {}
+func (*BoolValue) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{6} }
+func (*BoolValue) XXX_WellKnownType() string   { return "BoolValue" }
+
+// Wrapper message for `string`.
+//
+// The JSON representation for `StringValue` is JSON string.
+type StringValue struct {
+	// The string value.
+	Value string `protobuf:"bytes,1,opt,name=value" json:"value,omitempty"`
+}
+
+func (m *StringValue) Reset()                    { *m = StringValue{} }
+func (m *StringValue) String() string            { return proto.CompactTextString(m) }
+func (*StringValue) ProtoMessage()               {}
+func (*StringValue) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} }
+func (*StringValue) XXX_WellKnownType() string   { return "StringValue" }
+
+// Wrapper message for `bytes`.
+//
+// The JSON representation for `BytesValue` is JSON string.
+type BytesValue struct {
+	// The bytes value.
+	Value []byte `protobuf:"bytes,1,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (m *BytesValue) Reset()                    { *m = BytesValue{} }
+func (m *BytesValue) String() string            { return proto.CompactTextString(m) }
+func (*BytesValue) ProtoMessage()               {}
+func (*BytesValue) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{8} }
+func (*BytesValue) XXX_WellKnownType() string   { return "BytesValue" }
+
+func init() {
+	proto.RegisterType((*DoubleValue)(nil), "google.protobuf.DoubleValue")
+	proto.RegisterType((*FloatValue)(nil), "google.protobuf.FloatValue")
+	proto.RegisterType((*Int64Value)(nil), "google.protobuf.Int64Value")
+	proto.RegisterType((*UInt64Value)(nil), "google.protobuf.UInt64Value")
+	proto.RegisterType((*Int32Value)(nil), "google.protobuf.Int32Value")
+	proto.RegisterType((*UInt32Value)(nil), "google.protobuf.UInt32Value")
+	proto.RegisterType((*BoolValue)(nil), "google.protobuf.BoolValue")
+	proto.RegisterType((*StringValue)(nil), "google.protobuf.StringValue")
+	proto.RegisterType((*BytesValue)(nil), "google.protobuf.BytesValue")
+}
+
+func init() {
+	proto.RegisterFile("github.com/golang/protobuf/ptypes/wrappers/wrappers.proto", fileDescriptor0)
+}
+
+var fileDescriptor0 = []byte{
+	// 260 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0xb2, 0x4c, 0xcf, 0x2c, 0xc9,
+	0x28, 0x4d, 0xd2, 0x4b, 0xce, 0xcf, 0xd5, 0x4f, 0xcf, 0xcf, 0x49, 0xcc, 0x4b, 0xd7, 0x2f, 0x28,
+	0xca, 0x2f, 0xc9, 0x4f, 0x2a, 0x4d, 0xd3, 0x2f, 0x28, 0xa9, 0x2c, 0x48, 0x2d, 0xd6, 0x2f, 0x2f,
+	0x4a, 0x2c, 0x28, 0x48, 0x2d, 0x42, 0x30, 0xf4, 0xc0, 0x2a, 0x84, 0xf8, 0xd3, 0xf3, 0xf3, 0xd3,
+	0x73, 0x52, 0xf5, 0x60, 0xea, 0x95, 0x94, 0xb9, 0xb8, 0x5d, 0xf2, 0x4b, 0x93, 0x72, 0x52, 0xc3,
+	0x12, 0x73, 0x4a, 0x53, 0x85, 0x44, 0xb8, 0x58, 0xcb, 0x40, 0x0c, 0x09, 0x46, 0x05, 0x46, 0x0d,
+	0xc6, 0x20, 0x08, 0x47, 0x49, 0x89, 0x8b, 0xcb, 0x2d, 0x27, 0x3f, 0xb1, 0x04, 0x8b, 0x1a, 0x26,
+	0x24, 0x35, 0x9e, 0x79, 0x25, 0x66, 0x26, 0x58, 0xd4, 0x30, 0xc3, 0xd4, 0x28, 0x73, 0x71, 0x87,
+	0xe2, 0x52, 0xc4, 0x82, 0x6a, 0x90, 0xb1, 0x11, 0x16, 0x35, 0xac, 0x68, 0x06, 0x61, 0x55, 0xc4,
+	0x0b, 0x53, 0xa4, 0xc8, 0xc5, 0xe9, 0x94, 0x9f, 0x9f, 0x83, 0x45, 0x09, 0x07, 0x92, 0x39, 0xc1,
+	0x25, 0x45, 0x99, 0x79, 0xe9, 0x58, 0x14, 0x71, 0x22, 0x39, 0xc8, 0xa9, 0xb2, 0x24, 0xb5, 0x18,
+	0x8b, 0x1a, 0x1e, 0xa8, 0x1a, 0xa7, 0x7a, 0x2e, 0xe1, 0xe4, 0xfc, 0x5c, 0x3d, 0xb4, 0xd0, 0x75,
+	0xe2, 0x0d, 0x87, 0x06, 0x7f, 0x00, 0x48, 0x24, 0x80, 0x31, 0x4a, 0x8b, 0xf8, 0xa8, 0x5b, 0xc0,
+	0xc8, 0xf8, 0x83, 0x91, 0x71, 0x11, 0x13, 0xb3, 0x7b, 0x80, 0xd3, 0x2a, 0x26, 0x39, 0x77, 0x88,
+	0xd1, 0x01, 0x50, 0xd5, 0x7a, 0xe1, 0xa9, 0x39, 0x39, 0xde, 0x79, 0xf9, 0xe5, 0x79, 0x21, 0x20,
+	0x5d, 0x49, 0x6c, 0x60, 0x63, 0x8c, 0x01, 0x01, 0x00, 0x00, 0xff, 0xff, 0xa9, 0xdf, 0x64, 0x4b,
+	0x1c, 0x02, 0x00, 0x00,
+}
diff --git a/vendor/github.com/golang/protobuf/ptypes/wrappers/wrappers.proto b/vendor/github.com/golang/protobuf/ptypes/wrappers/wrappers.proto
new file mode 100644
index 000000000..4828ad9ae
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/ptypes/wrappers/wrappers.proto
@@ -0,0 +1,119 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Wrappers for primitive (non-message) types. These types are useful
+// for embedding primitives in the `google.protobuf.Any` type and for places
+// where we need to distinguish between the absence of a primitive
+// typed field and its default value.
+
+syntax = "proto3";
+
+package google.protobuf;
+
+option csharp_namespace = "Google.Protobuf.WellKnownTypes";
+option cc_enable_arenas = true;
+option go_package = "github.com/golang/protobuf/ptypes/wrappers";
+option java_package = "com.google.protobuf";
+option java_outer_classname = "WrappersProto";
+option java_multiple_files = true;
+option java_generate_equals_and_hash = true;
+option objc_class_prefix = "GPB";
+
+// Wrapper message for `double`.
+//
+// The JSON representation for `DoubleValue` is JSON number.
+message DoubleValue {
+  // The double value.
+  double value = 1;
+}
+
+// Wrapper message for `float`.
+//
+// The JSON representation for `FloatValue` is JSON number.
+message FloatValue {
+  // The float value.
+  float value = 1;
+}
+
+// Wrapper message for `int64`.
+//
+// The JSON representation for `Int64Value` is JSON string.
+message Int64Value {
+  // The int64 value.
+  int64 value = 1;
+}
+
+// Wrapper message for `uint64`.
+//
+// The JSON representation for `UInt64Value` is JSON string.
+message UInt64Value {
+  // The uint64 value.
+  uint64 value = 1;
+}
+
+// Wrapper message for `int32`.
+//
+// The JSON representation for `Int32Value` is JSON number.
+message Int32Value {
+  // The int32 value.
+  int32 value = 1;
+}
+
+// Wrapper message for `uint32`.
+//
+// The JSON representation for `UInt32Value` is JSON number.
+message UInt32Value {
+  // The uint32 value.
+  uint32 value = 1;
+}
+
+// Wrapper message for `bool`.
+//
+// The JSON representation for `BoolValue` is JSON `true` and `false`.
+message BoolValue {
+  // The bool value.
+  bool value = 1;
+}
+
+// Wrapper message for `string`.
+//
+// The JSON representation for `StringValue` is JSON string.
+message StringValue {
+  // The string value.
+  string value = 1;
+}
+
+// Wrapper message for `bytes`.
+//
+// The JSON representation for `BytesValue` is JSON string.
+message BytesValue {
+  // The bytes value.
+  bytes value = 1;
+}
diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/.travis.yml b/vendor/github.com/matttproud/golang_protobuf_extensions/.travis.yml
new file mode 100644
index 000000000..f1309c9f8
--- /dev/null
+++ b/vendor/github.com/matttproud/golang_protobuf_extensions/.travis.yml
@@ -0,0 +1,2 @@
+language: go
+
diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/LICENSE b/vendor/github.com/matttproud/golang_protobuf_extensions/LICENSE
new file mode 100644
index 000000000..8dada3eda
--- /dev/null
+++ b/vendor/github.com/matttproud/golang_protobuf_extensions/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright {yyyy} {name of copyright owner}
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/NOTICE b/vendor/github.com/matttproud/golang_protobuf_extensions/NOTICE
new file mode 100644
index 000000000..5d8cb5b72
--- /dev/null
+++ b/vendor/github.com/matttproud/golang_protobuf_extensions/NOTICE
@@ -0,0 +1 @@
+Copyright 2012 Matt T. Proud (matt.proud@gmail.com)
diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/README.md b/vendor/github.com/matttproud/golang_protobuf_extensions/README.md
new file mode 100644
index 000000000..751ee6967
--- /dev/null
+++ b/vendor/github.com/matttproud/golang_protobuf_extensions/README.md
@@ -0,0 +1,20 @@
+# Overview
+This repository provides various Protocol Buffer extensions for the Go
+language (golang), namely support for record length-delimited message
+streaming.
+
+| Java                           | Go                    |
+| ------------------------------ | --------------------- |
+| MessageLite#parseDelimitedFrom | pbutil.ReadDelimited  |
+| MessageLite#writeDelimitedTo   | pbutil.WriteDelimited |
+
+Because [Code Review 9102043](https://codereview.appspot.com/9102043/) is
+destined to never be merged into mainline (i.e., never be promoted to formal
+[goprotobuf features](https://github.com/golang/protobuf)), this repository
+will live here in the wild.
+
+# Documentation
+We have [generated Go Doc documentation](http://godoc.org/github.com/matttproud/golang_protobuf_extensions/pbutil) here.
+
+# Testing
+[![Build Status](https://travis-ci.org/matttproud/golang_protobuf_extensions.png?branch=master)](https://travis-ci.org/matttproud/golang_protobuf_extensions)
diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/ext/moved.go b/vendor/github.com/matttproud/golang_protobuf_extensions/ext/moved.go
new file mode 100644
index 000000000..f31a0f049
--- /dev/null
+++ b/vendor/github.com/matttproud/golang_protobuf_extensions/ext/moved.go
@@ -0,0 +1,2 @@
+// Package ext moved to a new location: github.com/matttproud/golang_protobuf_extensions/pbutil.
+package ext
diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/pbtest/deleted.go b/vendor/github.com/matttproud/golang_protobuf_extensions/pbtest/deleted.go
new file mode 100644
index 000000000..73efcb181
--- /dev/null
+++ b/vendor/github.com/matttproud/golang_protobuf_extensions/pbtest/deleted.go
@@ -0,0 +1,2 @@
+// Package pbtest is deleted for the time being, because upstream Protocol Buffer 3 may have rendered quick.Value-based blackbox generation impossible.
+package pbtest
diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/all_test.go b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/all_test.go
new file mode 100644
index 000000000..5c463722d
--- /dev/null
+++ b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/all_test.go
@@ -0,0 +1,177 @@
+// Copyright 2013 Matt T. Proud
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package pbutil
+
+import (
+	"bytes"
+	"testing"
+
+	. "github.com/golang/protobuf/proto"
+	. "github.com/golang/protobuf/proto/testdata"
+)
+
+func TestWriteDelimited(t *testing.T) {
+	t.Parallel()
+	for _, test := range []struct {
+		msg Message
+		buf []byte
+		n   int
+		err error
+	}{
+		{
+			msg: &Empty{},
+			n:   1,
+			buf: []byte{0},
+		},
+		{
+			msg: &GoEnum{Foo: FOO_FOO1.Enum()},
+			n:   3,
+			buf: []byte{2, 8, 1},
+		},
+		{
+			msg: &Strings{
+				StringField: String(`This is my gigantic, unhappy string.  It exceeds
+the encoding size of a single byte varint.  We are using it to fuzz test the
+correctness of the header decoding mechanisms, which may prove problematic.
+I expect it may.  Let's hope you enjoy testing as much as we do.`),
+			},
+			n: 271,
+			buf: []byte{141, 2, 10, 138, 2, 84, 104, 105, 115, 32, 105, 115, 32, 109,
+				121, 32, 103, 105, 103, 97, 110, 116, 105, 99, 44, 32, 117, 110, 104,
+				97, 112, 112, 121, 32, 115, 116, 114, 105, 110, 103, 46, 32, 32, 73,
+				116, 32, 101, 120, 99, 101, 101, 100, 115, 10, 116, 104, 101, 32, 101,
+				110, 99, 111, 100, 105, 110, 103, 32, 115, 105, 122, 101, 32, 111, 102,
+				32, 97, 32, 115, 105, 110, 103, 108, 101, 32, 98, 121, 116, 101, 32,
+				118, 97, 114, 105, 110, 116, 46, 32, 32, 87, 101, 32, 97, 114, 101, 32,
+				117, 115, 105, 110, 103, 32, 105, 116, 32, 116, 111, 32, 102, 117, 122,
+				122, 32, 116, 101, 115, 116, 32, 116, 104, 101, 10, 99, 111, 114, 114,
+				101, 99, 116, 110, 101, 115, 115, 32, 111, 102, 32, 116, 104, 101, 32,
+				104, 101, 97, 100, 101, 114, 32, 100, 101, 99, 111, 100, 105, 110, 103,
+				32, 109, 101, 99, 104, 97, 110, 105, 115, 109, 115, 44, 32, 119, 104,
+				105, 99, 104, 32, 109, 97, 121, 32, 112, 114, 111, 118, 101, 32, 112,
+				114, 111, 98, 108, 101, 109, 97, 116, 105, 99, 46, 10, 73, 32, 101, 120,
+				112, 101, 99, 116, 32, 105, 116, 32, 109, 97, 121, 46, 32, 32, 76, 101,
+				116, 39, 115, 32, 104, 111, 112, 101, 32, 121, 111, 117, 32, 101, 110,
+				106, 111, 121, 32, 116, 101, 115, 116, 105, 110, 103, 32, 97, 115, 32,
+				109, 117, 99, 104, 32, 97, 115, 32, 119, 101, 32, 100, 111, 46},
+		},
+	} {
+		var buf bytes.Buffer
+		if n, err := WriteDelimited(&buf, test.msg); n != test.n || err != test.err {
+			t.Fatalf("WriteDelimited(buf, %#v) = %v, %v; want %v, %v", test.msg, n, err, test.n, test.err)
+		}
+		if out := buf.Bytes(); !bytes.Equal(out, test.buf) {
+			t.Fatalf("WriteDelimited(buf, %#v); buf = %v; want %v", test.msg, out, test.buf)
+		}
+	}
+}
+
+func TestReadDelimited(t *testing.T) {
+	t.Parallel()
+	for _, test := range []struct {
+		buf []byte
+		msg Message
+		n   int
+		err error
+	}{
+		{
+			buf: []byte{0},
+			msg: &Empty{},
+			n:   1,
+		},
+		{
+			n:   3,
+			buf: []byte{2, 8, 1},
+			msg: &GoEnum{Foo: FOO_FOO1.Enum()},
+		},
+		{
+			buf: []byte{141, 2, 10, 138, 2, 84, 104, 105, 115, 32, 105, 115, 32, 109,
+				121, 32, 103, 105, 103, 97, 110, 116, 105, 99, 44, 32, 117, 110, 104,
+				97, 112, 112, 121, 32, 115, 116, 114, 105, 110, 103, 46, 32, 32, 73,
+				116, 32, 101, 120, 99, 101, 101, 100, 115, 10, 116, 104, 101, 32, 101,
+				110, 99, 111, 100, 105, 110, 103, 32, 115, 105, 122, 101, 32, 111, 102,
+				32, 97, 32, 115, 105, 110, 103, 108, 101, 32, 98, 121, 116, 101, 32,
+				118, 97, 114, 105, 110, 116, 46, 32, 32, 87, 101, 32, 97, 114, 101, 32,
+				117, 115, 105, 110, 103, 32, 105, 116, 32, 116, 111, 32, 102, 117, 122,
+				122, 32, 116, 101, 115, 116, 32, 116, 104, 101, 10, 99, 111, 114, 114,
+				101, 99, 116, 110, 101, 115, 115, 32, 111, 102, 32, 116, 104, 101, 32,
+				104, 101, 97, 100, 101, 114, 32, 100, 101, 99, 111, 100, 105, 110, 103,
+				32, 109, 101, 99, 104, 97, 110, 105, 115, 109, 115, 44, 32, 119, 104,
+				105, 99, 104, 32, 109, 97, 121, 32, 112, 114, 111, 118, 101, 32, 112,
+				114, 111, 98, 108, 101, 109, 97, 116, 105, 99, 46, 10, 73, 32, 101, 120,
+				112, 101, 99, 116, 32, 105, 116, 32, 109, 97, 121, 46, 32, 32, 76, 101,
+				116, 39, 115, 32, 104, 111, 112, 101, 32, 121, 111, 117, 32, 101, 110,
+				106, 111, 121, 32, 116, 101, 115, 116, 105, 110, 103, 32, 97, 115, 32,
+				109, 117, 99, 104, 32, 97, 115, 32, 119, 101, 32, 100, 111, 46},
+			msg: &Strings{
+				StringField: String(`This is my gigantic, unhappy string.  It exceeds
+the encoding size of a single byte varint.  We are using it to fuzz test the
+correctness of the header decoding mechanisms, which may prove problematic.
+I expect it may.  Let's hope you enjoy testing as much as we do.`),
+			},
+			n: 271,
+		},
+	} {
+		msg := Clone(test.msg)
+		msg.Reset()
+		if n, err := ReadDelimited(bytes.NewBuffer(test.buf), msg); n != test.n || err != test.err {
+			t.Fatalf("ReadDelimited(%v, msg) = %v, %v; want %v, %v", test.buf, n, err, test.n, test.err)
+		}
+		if !Equal(msg, test.msg) {
+			t.Fatalf("ReadDelimited(%v, msg); msg = %v; want %v", test.buf, msg, test.msg)
+		}
+	}
+}
+
+func TestEndToEndValid(t *testing.T) {
+	t.Parallel()
+	for _, test := range [][]Message{
+		{&Empty{}},
+		{&GoEnum{Foo: FOO_FOO1.Enum()}, &Empty{}, &GoEnum{Foo: FOO_FOO1.Enum()}},
+		{&GoEnum{Foo: FOO_FOO1.Enum()}},
+		{&Strings{
+			StringField: String(`This is my gigantic, unhappy string.  It exceeds
+the encoding size of a single byte varint.  We are using it to fuzz test the
+correctness of the header decoding mechanisms, which may prove problematic.
+I expect it may.  Let's hope you enjoy testing as much as we do.`),
+		}},
+	} {
+		var buf bytes.Buffer
+		var written int
+		for i, msg := range test {
+			n, err := WriteDelimited(&buf, msg)
+			if err != nil {
+				// Assumption: TestReadDelimited and TestWriteDelimited are sufficient
+				//             and inputs for this test are explicitly exercised there.
+				t.Fatalf("WriteDelimited(buf, %v[%d]) = ?, %v; wanted ?, nil", test, i, err)
+			}
+			written += n
+		}
+		var read int
+		for i, msg := range test {
+			out := Clone(msg)
+			out.Reset()
+			n, _ := ReadDelimited(&buf, out)
+			// Decide to do EOF checking?
+			read += n
+			if !Equal(out, msg) {
+				t.Fatalf("out = %v; want %v[%d] = %#v", out, test, i, msg)
+			}
+		}
+		if read != written {
+			t.Fatalf("%v read = %d; want %d", test, read, written)
+		}
+	}
+}
diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/decode.go b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/decode.go
new file mode 100644
index 000000000..258c0636a
--- /dev/null
+++ b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/decode.go
@@ -0,0 +1,75 @@
+// Copyright 2013 Matt T. Proud
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package pbutil
+
+import (
+	"encoding/binary"
+	"errors"
+	"io"
+
+	"github.com/golang/protobuf/proto"
+)
+
+var errInvalidVarint = errors.New("invalid varint32 encountered")
+
+// ReadDelimited decodes a message from the provided length-delimited stream,
+// where the length is encoded as 32-bit varint prefix to the message body.
+// It returns the total number of bytes read and any applicable error.  This is
+// roughly equivalent to the companion Java API's
+// MessageLite#parseDelimitedFrom.  As per the reader contract, this function
+// calls r.Read repeatedly as required until exactly one message including its
+// prefix is read and decoded (or an error has occurred).  The function never
+// reads more bytes from the stream than required.  The function never returns
+// an error if a message has been read and decoded correctly, even if the end
+// of the stream has been reached in doing so.  In that case, any subsequent
+// calls return (0, io.EOF).
+func ReadDelimited(r io.Reader, m proto.Message) (n int, err error) {
+	// Per AbstractParser#parsePartialDelimitedFrom with
+	// CodedInputStream#readRawVarint32.
+	var headerBuf [binary.MaxVarintLen32]byte
+	var bytesRead, varIntBytes int
+	var messageLength uint64
+	for varIntBytes == 0 { // i.e. no varint has been decoded yet.
+		if bytesRead >= len(headerBuf) {
+			return bytesRead, errInvalidVarint
+		}
+		// We have to read byte by byte here to avoid reading more bytes
+		// than required. Each read byte is appended to what we have
+		// read before.
+		newBytesRead, err := r.Read(headerBuf[bytesRead : bytesRead+1])
+		if newBytesRead == 0 {
+			if err != nil {
+				return bytesRead, err
+			}
+			// A Reader should not return (0, nil), but if it does,
+			// it should be treated as no-op (according to the
+			// Reader contract). So let's go on...
+			continue
+		}
+		bytesRead += newBytesRead
+		// Now present everything read so far to the varint decoder and
+		// see if a varint can be decoded already.
+		messageLength, varIntBytes = proto.DecodeVarint(headerBuf[:bytesRead])
+	}
+
+	messageBuf := make([]byte, messageLength)
+	newBytesRead, err := io.ReadFull(r, messageBuf)
+	bytesRead += newBytesRead
+	if err != nil {
+		return bytesRead, err
+	}
+
+	return bytesRead, proto.Unmarshal(messageBuf, m)
+}
diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/decode_test.go b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/decode_test.go
new file mode 100644
index 000000000..364a7b799
--- /dev/null
+++ b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/decode_test.go
@@ -0,0 +1,99 @@
+// Copyright 2016 Matt T. Proud
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package pbutil
+
+import (
+	"bytes"
+	"io"
+	"testing"
+	"testing/iotest"
+)
+
+func TestReadDelimitedIllegalVarint(t *testing.T) {
+	t.Parallel()
+	var tests = []struct {
+		in  []byte
+		n   int
+		err error
+	}{
+		{
+			in:  []byte{255, 255, 255, 255, 255},
+			n:   5,
+			err: errInvalidVarint,
+		},
+		{
+			in:  []byte{255, 255, 255, 255, 255, 255},
+			n:   5,
+			err: errInvalidVarint,
+		},
+	}
+	for _, test := range tests {
+		n, err := ReadDelimited(bytes.NewReader(test.in), nil)
+		if got, want := n, test.n; got != want {
+			t.Errorf("ReadDelimited(%#v, nil) = %#v, ?; want = %v#, ?", test.in, got, want)
+		}
+		if got, want := err, test.err; got != want {
+			t.Errorf("ReadDelimited(%#v, nil) = ?, %#v; want = ?, %#v", test.in, got, want)
+		}
+	}
+}
+
+func TestReadDelimitedPrematureHeader(t *testing.T) {
+	t.Parallel()
+	var data = []byte{128, 5} // 256 + 256 + 128
+	n, err := ReadDelimited(bytes.NewReader(data[0:1]), nil)
+	if got, want := n, 1; got != want {
+		t.Errorf("ReadDelimited(%#v, nil) = %#v, ?; want = %v#, ?", data[0:1], got, want)
+	}
+	if got, want := err, io.EOF; got != want {
+		t.Errorf("ReadDelimited(%#v, nil) = ?, %#v; want = ?, %#v", data[0:1], got, want)
+	}
+}
+
+func TestReadDelimitedPrematureBody(t *testing.T) {
+	t.Parallel()
+	var data = []byte{128, 5, 0, 0, 0} // 256 + 256 + 128
+	n, err := ReadDelimited(bytes.NewReader(data[:]), nil)
+	if got, want := n, 5; got != want {
+		t.Errorf("ReadDelimited(%#v, nil) = %#v, ?; want = %v#, ?", data, got, want)
+	}
+	if got, want := err, io.ErrUnexpectedEOF; got != want {
+		t.Errorf("ReadDelimited(%#v, nil) = ?, %#v; want = ?, %#v", data, got, want)
+	}
+}
+
+func TestReadDelimitedPrematureHeaderIncremental(t *testing.T) {
+	t.Parallel()
+	var data = []byte{128, 5} // 256 + 256 + 128
+	n, err := ReadDelimited(iotest.OneByteReader(bytes.NewReader(data[0:1])), nil)
+	if got, want := n, 1; got != want {
+		t.Errorf("ReadDelimited(%#v, nil) = %#v, ?; want = %v#, ?", data[0:1], got, want)
+	}
+	if got, want := err, io.EOF; got != want {
+		t.Errorf("ReadDelimited(%#v, nil) = ?, %#v; want = ?, %#v", data[0:1], got, want)
+	}
+}
+
+func TestReadDelimitedPrematureBodyIncremental(t *testing.T) {
+	t.Parallel()
+	var data = []byte{128, 5, 0, 0, 0} // 256 + 256 + 128
+	n, err := ReadDelimited(iotest.OneByteReader(bytes.NewReader(data[:])), nil)
+	if got, want := n, 5; got != want {
+		t.Errorf("ReadDelimited(%#v, nil) = %#v, ?; want = %v#, ?", data, got, want)
+	}
+	if got, want := err, io.ErrUnexpectedEOF; got != want {
+		t.Errorf("ReadDelimited(%#v, nil) = ?, %#v; want = ?, %#v", data, got, want)
+	}
+}
diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/doc.go b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/doc.go
new file mode 100644
index 000000000..c318385cb
--- /dev/null
+++ b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/doc.go
@@ -0,0 +1,16 @@
+// Copyright 2013 Matt T. Proud
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package pbutil provides record length-delimited Protocol Buffer streaming.
+package pbutil
diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/encode.go b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/encode.go
new file mode 100644
index 000000000..8fb59ad22
--- /dev/null
+++ b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/encode.go
@@ -0,0 +1,46 @@
+// Copyright 2013 Matt T. Proud
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package pbutil
+
+import (
+	"encoding/binary"
+	"io"
+
+	"github.com/golang/protobuf/proto"
+)
+
+// WriteDelimited encodes and dumps a message to the provided writer prefixed
+// with a 32-bit varint indicating the length of the encoded message, producing
+// a length-delimited record stream, which can be used to chain together
+// encoded messages of the same type together in a file.  It returns the total
+// number of bytes written and any applicable error.  This is roughly
+// equivalent to the companion Java API's MessageLite#writeDelimitedTo.
+func WriteDelimited(w io.Writer, m proto.Message) (n int, err error) {
+	buffer, err := proto.Marshal(m)
+	if err != nil {
+		return 0, err
+	}
+
+	var buf [binary.MaxVarintLen32]byte
+	encodedLength := binary.PutUvarint(buf[:], uint64(len(buffer)))
+
+	sync, err := w.Write(buf[:encodedLength])
+	if err != nil {
+		return sync, err
+	}
+
+	n, err = w.Write(buffer)
+	return n + sync, err
+}
diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/encode_test.go b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/encode_test.go
new file mode 100644
index 000000000..f92632b0b
--- /dev/null
+++ b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/encode_test.go
@@ -0,0 +1,67 @@
+// Copyright 2016 Matt T. Proud
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package pbutil
+
+import (
+	"bytes"
+	"errors"
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+)
+
+var errMarshal = errors.New("pbutil: can't marshal")
+
+type cantMarshal struct{ proto.Message }
+
+func (cantMarshal) Marshal() ([]byte, error) { return nil, errMarshal }
+
+var _ proto.Message = cantMarshal{}
+
+func TestWriteDelimitedMarshalErr(t *testing.T) {
+	t.Parallel()
+	var data cantMarshal
+	var buf bytes.Buffer
+	n, err := WriteDelimited(&buf, data)
+	if got, want := n, 0; got != want {
+		t.Errorf("WriteDelimited(buf, %#v) = %#v, ?; want = %v#, ?", data, got, want)
+	}
+	if got, want := err, errMarshal; got != want {
+		t.Errorf("WriteDelimited(buf, %#v) = ?, %#v; want = ?, %#v", data, got, want)
+	}
+}
+
+type canMarshal struct{ proto.Message }
+
+func (canMarshal) Marshal() ([]byte, error) { return []byte{0, 1, 2, 3, 4, 5}, nil }
+
+var errWrite = errors.New("pbutil: can't write")
+
+type cantWrite struct{}
+
+func (cantWrite) Write([]byte) (int, error) { return 0, errWrite }
+
+func TestWriteDelimitedWriteErr(t *testing.T) {
+	t.Parallel()
+	var data canMarshal
+	var buf cantWrite
+	n, err := WriteDelimited(buf, data)
+	if got, want := n, 0; got != want {
+		t.Errorf("WriteDelimited(buf, %#v) = %#v, ?; want = %v#, ?", data, got, want)
+	}
+	if got, want := err, errWrite; got != want {
+		t.Errorf("WriteDelimited(buf, %#v) = ?, %#v; want = ?, %#v", data, got, want)
+	}
+}
diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/fixtures_test.go b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/fixtures_test.go
new file mode 100644
index 000000000..d6d9b2559
--- /dev/null
+++ b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/fixtures_test.go
@@ -0,0 +1,103 @@
+// Copyright 2010 The Go Authors.  All rights reserved.
+// http://github.com/golang/protobuf/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package pbutil
+
+import (
+	. "github.com/golang/protobuf/proto"
+	. "github.com/golang/protobuf/proto/testdata"
+)
+
+// FROM https://github.com/golang/protobuf/blob/master/proto/all_test.go.
+
+func initGoTestField() *GoTestField {
+	f := new(GoTestField)
+	f.Label = String("label")
+	f.Type = String("type")
+	return f
+}
+
+// These are all structurally equivalent but the tag numbers differ.
+// (It's remarkable that required, optional, and repeated all have
+// 8 letters.)
+func initGoTest_RequiredGroup() *GoTest_RequiredGroup {
+	return &GoTest_RequiredGroup{
+		RequiredField: String("required"),
+	}
+}
+
+func initGoTest_OptionalGroup() *GoTest_OptionalGroup {
+	return &GoTest_OptionalGroup{
+		RequiredField: String("optional"),
+	}
+}
+
+func initGoTest_RepeatedGroup() *GoTest_RepeatedGroup {
+	return &GoTest_RepeatedGroup{
+		RequiredField: String("repeated"),
+	}
+}
+
+func initGoTest(setdefaults bool) *GoTest {
+	pb := new(GoTest)
+	if setdefaults {
+		pb.F_BoolDefaulted = Bool(Default_GoTest_F_BoolDefaulted)
+		pb.F_Int32Defaulted = Int32(Default_GoTest_F_Int32Defaulted)
+		pb.F_Int64Defaulted = Int64(Default_GoTest_F_Int64Defaulted)
+		pb.F_Fixed32Defaulted = Uint32(Default_GoTest_F_Fixed32Defaulted)
+		pb.F_Fixed64Defaulted = Uint64(Default_GoTest_F_Fixed64Defaulted)
+		pb.F_Uint32Defaulted = Uint32(Default_GoTest_F_Uint32Defaulted)
+		pb.F_Uint64Defaulted = Uint64(Default_GoTest_F_Uint64Defaulted)
+		pb.F_FloatDefaulted = Float32(Default_GoTest_F_FloatDefaulted)
+		pb.F_DoubleDefaulted = Float64(Default_GoTest_F_DoubleDefaulted)
+		pb.F_StringDefaulted = String(Default_GoTest_F_StringDefaulted)
+		pb.F_BytesDefaulted = Default_GoTest_F_BytesDefaulted
+		pb.F_Sint32Defaulted = Int32(Default_GoTest_F_Sint32Defaulted)
+		pb.F_Sint64Defaulted = Int64(Default_GoTest_F_Sint64Defaulted)
+	}
+
+	pb.Kind = GoTest_TIME.Enum()
+	pb.RequiredField = initGoTestField()
+	pb.F_BoolRequired = Bool(true)
+	pb.F_Int32Required = Int32(3)
+	pb.F_Int64Required = Int64(6)
+	pb.F_Fixed32Required = Uint32(32)
+	pb.F_Fixed64Required = Uint64(64)
+	pb.F_Uint32Required = Uint32(3232)
+	pb.F_Uint64Required = Uint64(6464)
+	pb.F_FloatRequired = Float32(3232)
+	pb.F_DoubleRequired = Float64(6464)
+	pb.F_StringRequired = String("string")
+	pb.F_BytesRequired = []byte("bytes")
+	pb.F_Sint32Required = Int32(-32)
+	pb.F_Sint64Required = Int64(-64)
+	pb.Requiredgroup = initGoTest_RequiredGroup()
+
+	return pb
+}
diff --git a/vendor/github.com/miekg/dns/edns.go b/vendor/github.com/miekg/dns/edns.go
index 0550aaa39..fc0b46925 100644
--- a/vendor/github.com/miekg/dns/edns.go
+++ b/vendor/github.com/miekg/dns/edns.go
@@ -4,25 +4,27 @@ import (
 	"encoding/binary"
 	"encoding/hex"
 	"errors"
+	"fmt"
 	"net"
 	"strconv"
 )
 
 // EDNS0 Option codes.
 const (
-	EDNS0LLQ         = 0x1     // long lived queries: http://tools.ietf.org/html/draft-sekar-dns-llq-01
-	EDNS0UL          = 0x2     // update lease draft: http://files.dns-sd.org/draft-sekar-dns-ul.txt
-	EDNS0NSID        = 0x3     // nsid (RFC5001)
-	EDNS0DAU         = 0x5     // DNSSEC Algorithm Understood
-	EDNS0DHU         = 0x6     // DS Hash Understood
-	EDNS0N3U         = 0x7     // NSEC3 Hash Understood
-	EDNS0SUBNET      = 0x8     // client-subnet (RFC6891)
-	EDNS0EXPIRE      = 0x9     // EDNS0 expire
-	EDNS0COOKIE      = 0xa     // EDNS0 Cookie
-	EDNS0SUBNETDRAFT = 0x50fa  // Don't use! Use EDNS0SUBNET
-	EDNS0LOCALSTART  = 0xFDE9  // Beginning of range reserved for local/experimental use (RFC6891)
-	EDNS0LOCALEND    = 0xFFFE  // End of range reserved for local/experimental use (RFC6891)
-	_DO              = 1 << 15 // dnssec ok
+	EDNS0LLQ          = 0x1     // long lived queries: http://tools.ietf.org/html/draft-sekar-dns-llq-01
+	EDNS0UL           = 0x2     // update lease draft: http://files.dns-sd.org/draft-sekar-dns-ul.txt
+	EDNS0NSID         = 0x3     // nsid (RFC5001)
+	EDNS0DAU          = 0x5     // DNSSEC Algorithm Understood
+	EDNS0DHU          = 0x6     // DS Hash Understood
+	EDNS0N3U          = 0x7     // NSEC3 Hash Understood
+	EDNS0SUBNET       = 0x8     // client-subnet (RFC6891)
+	EDNS0EXPIRE       = 0x9     // EDNS0 expire
+	EDNS0COOKIE       = 0xa     // EDNS0 Cookie
+	EDNS0TCPKEEPALIVE = 0xb     // EDNS0 tcp keep alive (RFC7828)
+	EDNS0SUBNETDRAFT  = 0x50fa  // Don't use! Use EDNS0SUBNET
+	EDNS0LOCALSTART   = 0xFDE9  // Beginning of range reserved for local/experimental use (RFC6891)
+	EDNS0LOCALEND     = 0xFFFE  // End of range reserved for local/experimental use (RFC6891)
+	_DO               = 1 << 15 // dnssec ok
 )
 
 // OPT is the EDNS0 RR appended to messages to convey extra (meta) information.
@@ -540,3 +542,56 @@ func (e *EDNS0_LOCAL) unpack(b []byte) error {
 	}
 	return nil
 }
+
+type EDNS0_TCP_KEEPALIVE struct {
+	Code    uint16 // Always EDNSTCPKEEPALIVE
+	Length  uint16 // the value 0 if the TIMEOUT is omitted, the value 2 if it is present;
+	Timeout uint16 // an idle timeout value for the TCP connection, specified in units of 100 milliseconds, encoded in network byte order.
+}
+
+func (e *EDNS0_TCP_KEEPALIVE) Option() uint16 {
+	return EDNS0TCPKEEPALIVE
+}
+
+func (e *EDNS0_TCP_KEEPALIVE) pack() ([]byte, error) {
+	if e.Timeout != 0 && e.Length != 2 {
+		return nil, errors.New("dns: timeout specified but length is not 2")
+	}
+	if e.Timeout == 0 && e.Length != 0 {
+		return nil, errors.New("dns: timeout not specified but length is not 0")
+	}
+	b := make([]byte, 4+e.Length)
+	binary.BigEndian.PutUint16(b[0:], e.Code)
+	binary.BigEndian.PutUint16(b[2:], e.Length)
+	if e.Length == 2 {
+		binary.BigEndian.PutUint16(b[4:], e.Timeout)
+	}
+	return b, nil
+}
+
+func (e *EDNS0_TCP_KEEPALIVE) unpack(b []byte) error {
+	if len(b) < 4 {
+		return ErrBuf
+	}
+	e.Length = binary.BigEndian.Uint16(b[2:4])
+	if e.Length != 0 && e.Length != 2 {
+		return errors.New("dns: length mismatch, want 0/2 but got " + strconv.FormatUint(uint64(e.Length), 10))
+	}
+	if e.Length == 2 {
+		if len(b) < 6 {
+			return ErrBuf
+		}
+		e.Timeout = binary.BigEndian.Uint16(b[4:6])
+	}
+	return nil
+}
+
+func (e *EDNS0_TCP_KEEPALIVE) String() (s string) {
+	s = "use tcp keep-alive"
+	if e.Length == 0 {
+		s += ", timeout omitted"
+	} else {
+		s += fmt.Sprintf(", timeout %dms", e.Timeout*100)
+	}
+	return
+}
diff --git a/vendor/github.com/miekg/dns/server.go b/vendor/github.com/miekg/dns/server.go
index c34801aef..1d40ee56d 100644
--- a/vendor/github.com/miekg/dns/server.go
+++ b/vendor/github.com/miekg/dns/server.go
@@ -389,7 +389,9 @@ func (srv *Server) ActivateAndServe() error {
 		if srv.UDPSize == 0 {
 			srv.UDPSize = MinMsgSize
 		}
-		if t, ok := pConn.(*net.UDPConn); ok {
+		// Check PacketConn interface's type is valid and value
+		// is not nil
+		if t, ok := pConn.(*net.UDPConn); ok && t != nil {
 			if e := setUDPSocketOptions(t); e != nil {
 				return e
 			}
diff --git a/vendor/github.com/prometheus/client_golang/.gitignore b/vendor/github.com/prometheus/client_golang/.gitignore
new file mode 100644
index 000000000..f6fc2e8eb
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/.gitignore
@@ -0,0 +1,26 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+
+*~
+*#
+.build
diff --git a/vendor/github.com/prometheus/client_golang/.travis.yml b/vendor/github.com/prometheus/client_golang/.travis.yml
new file mode 100644
index 000000000..d83f31a59
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/.travis.yml
@@ -0,0 +1,9 @@
+sudo: false
+language: go
+
+go:
+ - 1.5.4
+ - 1.6.2
+
+script:
+ - go test -short ./... 
diff --git a/vendor/github.com/prometheus/client_golang/AUTHORS.md b/vendor/github.com/prometheus/client_golang/AUTHORS.md
new file mode 100644
index 000000000..c5275d5ab
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/AUTHORS.md
@@ -0,0 +1,18 @@
+The Prometheus project was started by Matt T. Proud (emeritus) and
+Julius Volz in 2012.
+
+Maintainers of this repository:
+
+* Björn Rabenstein <beorn@soundcloud.com>
+
+The following individuals have contributed code to this repository
+(listed in alphabetical order):
+
+* Bernerd Schaefer <bj.schaefer@gmail.com>
+* Björn Rabenstein <beorn@soundcloud.com>
+* Daniel Bornkessel <daniel@soundcloud.com>
+* Jeff Younker <jeff@drinktomi.com>
+* Julius Volz <julius.volz@gmail.com>
+* Matt T. Proud <matt.proud@gmail.com>
+* Tobias Schmidt <ts@soundcloud.com>
+
diff --git a/vendor/github.com/prometheus/client_golang/CHANGELOG.md b/vendor/github.com/prometheus/client_golang/CHANGELOG.md
new file mode 100644
index 000000000..330788a4e
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/CHANGELOG.md
@@ -0,0 +1,109 @@
+## 0.8.0 / 2016-08-17
+* [CHANGE] Registry is doing more consistency checks. This might break
+  existing setups that used to export inconsistent metrics.
+* [CHANGE] Pushing to Pushgateway moved to package `push` and changed to allow
+  arbitrary grouping.
+* [CHANGE] Removed `SelfCollector`.
+* [CHANGE] Removed `PanicOnCollectError` and `EnableCollectChecks` methods.
+* [CHANGE] Moved packages to the prometheus/common repo: `text`, `model`,
+  `extraction`.
+* [CHANGE] Deprecated a number of functions.
+* [FEATURE] Allow custom registries. Added `Registerer` and `Gatherer`
+  interfaces.
+* [FEATURE] Separated HTTP exposition, allowing custom HTTP handlers (package
+  `promhttp`) and enabling the creation of other exposition mechanisms.
+* [FEATURE] `MustRegister` is variadic now, allowing registration of many
+  collectors in one call.
+* [FEATURE] Added HTTP API v1 package.
+* [ENHANCEMENT] Numerous documentation improvements.
+* [ENHANCEMENT] Improved metric sorting.
+* [ENHANCEMENT] Inlined fnv64a hashing for improved performance.
+* [ENHANCEMENT] Several test improvements.
+* [BUGFIX] Handle collisions in MetricVec.
+
+## 0.7.0 / 2015-07-27
+* [CHANGE] Rename ExporterLabelPrefix to ExportedLabelPrefix.
+* [BUGFIX] Closed gaps in metric consistency check.
+* [BUGFIX] Validate LabelName/LabelSet on JSON unmarshaling.
+* [ENHANCEMENT] Document the possibility to create "empty" metrics in
+  a metric vector.
+* [ENHANCEMENT] Fix and clarify various doc comments and the README.md.
+* [ENHANCEMENT] (Kind of) solve "The Proxy Problem" of http.InstrumentHandler.
+* [ENHANCEMENT] Change responseWriterDelegator.written to int64.
+
+## 0.6.0 / 2015-06-01
+* [CHANGE] Rename process_goroutines to go_goroutines.
+* [ENHANCEMENT] Validate label names during YAML decoding.
+* [ENHANCEMENT] Add LabelName regular expression.
+* [BUGFIX] Ensure alignment of struct members for 32-bit systems.
+
+## 0.5.0 / 2015-05-06
+* [BUGFIX] Removed a weakness in the fingerprinting aka signature code.
+  This makes fingerprinting slower and more allocation-heavy, but the
+  weakness was too severe to be tolerated.
+* [CHANGE] As a result of the above, Metric.Fingerprint is now returning
+  a different fingerprint. To keep the same fingerprint, the new method
+  Metric.FastFingerprint was introduced, which will be used by the
+  Prometheus server for storage purposes (implying that a collision
+  detection has to be added, too).
+* [ENHANCEMENT] The Metric.Equal and Metric.Before do not depend on
+  fingerprinting anymore, removing the possibility of an undetected
+  fingerprint collision.
+* [FEATURE] The Go collector in the exposition library includes garbage
+  collection stats.
+* [FEATURE] The exposition library allows to create constant "throw-away"
+  summaries and histograms.
+* [CHANGE] A number of new reserved labels and prefixes.
+
+## 0.4.0 / 2015-04-08
+* [CHANGE] Return NaN when Summaries have no observations yet.
+* [BUGFIX] Properly handle Summary decay upon Write().
+* [BUGFIX] Fix the documentation link to the consumption library.
+* [FEATURE] Allow the metric family injection hook to merge with existing
+  metric families.
+* [ENHANCEMENT] Removed cgo dependency and conditional compilation of procfs.
+* [MAINTENANCE] Adjusted to changes in matttproud/golang_protobuf_extensions.
+
+## 0.3.2 / 2015-03-11
+* [BUGFIX] Fixed the receiver type of COWMetric.Set(). This method is
+  only used by the Prometheus server internally.
+* [CLEANUP] Added licenses of vendored code left out by godep.
+
+## 0.3.1 / 2015-03-04
+* [ENHANCEMENT] Switched fingerprinting functions from own free list to
+  sync.Pool.
+* [CHANGE] Makefile uses Go 1.4.2 now (only relevant for examples and tests).
+
+## 0.3.0 / 2015-03-03
+* [CHANGE] Changed the fingerprinting for metrics. THIS WILL INVALIDATE ALL
+  PERSISTED FINGERPRINTS. IF YOU COMPILE THE PROMETHEUS SERVER WITH THIS
+  VERSION, YOU HAVE TO WIPE THE PREVIOUSLY CREATED STORAGE.
+* [CHANGE] LabelValuesToSignature removed. (Nobody had used it, and it was
+  arguably broken.)
+* [CHANGE] Vendored dependencies. Those are only used by the Makefile. If
+  client_golang is used as a library, the vendoring will stay out of your way.
+* [BUGFIX] Remove a weakness in the fingerprinting for metrics. (This made
+  the fingerprinting change above necessary.)
+* [FEATURE] Added new fingerprinting functions SignatureForLabels and
+  SignatureWithoutLabels to be used by the Prometheus server. These functions
+  require fewer allocations than the ones currently used by the server.
+
+## 0.2.0 / 2015-02-23
+* [FEATURE] Introduce new Histagram metric type.
+* [CHANGE] Ignore process collector errors for now (better error handling
+  pending).
+* [CHANGE] Use clear error interface for process pidFn.
+* [BUGFIX] Fix Go download links for several archs and OSes.
+* [ENHANCEMENT] Massively improve Gauge and Counter performance.
+* [ENHANCEMENT] Catch illegal label names for summaries in histograms.
+* [ENHANCEMENT] Reduce allocations during fingerprinting.
+* [ENHANCEMENT] Remove cgo dependency. procfs package will only be included if
+  both cgo is available and the build is for an OS with procfs.
+* [CLEANUP] Clean up code style issues.
+* [CLEANUP] Mark slow test as such and exclude them from travis.
+* [CLEANUP] Update protobuf library package name.
+* [CLEANUP] Updated vendoring of beorn7/perks.
+
+## 0.1.0 / 2015-02-02
+* [CLEANUP] Introduced semantic versioning and changelog. From now on,
+  changes will be reported in this file.
diff --git a/vendor/github.com/prometheus/client_golang/CONTRIBUTING.md b/vendor/github.com/prometheus/client_golang/CONTRIBUTING.md
new file mode 100644
index 000000000..5705f0fbe
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/CONTRIBUTING.md
@@ -0,0 +1,18 @@
+# Contributing
+
+Prometheus uses GitHub to manage reviews of pull requests.
+
+* If you have a trivial fix or improvement, go ahead and create a pull
+  request, addressing (with `@...`) one or more of the maintainers
+  (see [AUTHORS.md](AUTHORS.md)) in the description of the pull request.
+
+* If you plan to do something more involved, first discuss your ideas
+  on our [mailing list](https://groups.google.com/forum/?fromgroups#!forum/prometheus-developers).
+  This will avoid unnecessary work and surely give you and us a good deal
+  of inspiration.
+
+* Relevant coding style guidelines are the [Go Code Review
+  Comments](https://code.google.com/p/go-wiki/wiki/CodeReviewComments)
+  and the _Formatting and style_ section of Peter Bourgon's [Go: Best
+  Practices for Production
+  Environments](http://peter.bourgon.org/go-in-production/#formatting-and-style).
diff --git a/vendor/github.com/prometheus/client_golang/LICENSE b/vendor/github.com/prometheus/client_golang/LICENSE
new file mode 100644
index 000000000..261eeb9e9
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/github.com/prometheus/client_golang/NOTICE b/vendor/github.com/prometheus/client_golang/NOTICE
new file mode 100644
index 000000000..dd878a30e
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/NOTICE
@@ -0,0 +1,23 @@
+Prometheus instrumentation library for Go applications
+Copyright 2012-2015 The Prometheus Authors
+
+This product includes software developed at
+SoundCloud Ltd. (http://soundcloud.com/).
+
+
+The following components are included in this product:
+
+perks - a fork of https://github.com/bmizerany/perks
+https://github.com/beorn7/perks
+Copyright 2013-2015 Blake Mizerany, Björn Rabenstein
+See https://github.com/beorn7/perks/blob/master/README.md for license details.
+
+Go support for Protocol Buffers - Google's data interchange format
+http://github.com/golang/protobuf/
+Copyright 2010 The Go Authors
+See source code for license details.
+
+Support for streaming Protocol Buffer messages for the Go language (golang).
+https://github.com/matttproud/golang_protobuf_extensions
+Copyright 2013 Matt T. Proud
+Licensed under the Apache License, Version 2.0
diff --git a/vendor/github.com/prometheus/client_golang/README.md b/vendor/github.com/prometheus/client_golang/README.md
new file mode 100644
index 000000000..557eacf5a
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/README.md
@@ -0,0 +1,45 @@
+# Prometheus Go client library
+
+[![Build Status](https://travis-ci.org/prometheus/client_golang.svg?branch=master)](https://travis-ci.org/prometheus/client_golang)
+
+This is the [Go](http://golang.org) client library for
+[Prometheus](http://prometheus.io). It has two separate parts, one for
+instrumenting application code, and one for creating clients that talk to the
+Prometheus HTTP API.
+
+## Instrumenting applications
+
+[![code-coverage](http://gocover.io/_badge/github.com/prometheus/client_golang/prometheus)](http://gocover.io/github.com/prometheus/client_golang/prometheus) [![go-doc](https://godoc.org/github.com/prometheus/client_golang/prometheus?status.svg)](https://godoc.org/github.com/prometheus/client_golang/prometheus)
+
+The
+[`prometheus` directory](https://github.com/prometheus/client_golang/tree/master/prometheus)
+contains the instrumentation library. See the
+[best practices section](http://prometheus.io/docs/practices/naming/) of the
+Prometheus documentation to learn more about instrumenting applications.
+
+The
+[`examples` directory](https://github.com/prometheus/client_golang/tree/master/examples)
+contains simple examples of instrumented code.
+
+## Client for the Prometheus HTTP API
+
+[![code-coverage](http://gocover.io/_badge/github.com/prometheus/client_golang/api/prometheus)](http://gocover.io/github.com/prometheus/client_golang/api/prometheus) [![go-doc](https://godoc.org/github.com/prometheus/client_golang/api/prometheus?status.svg)](https://godoc.org/github.com/prometheus/client_golang/api/prometheus)
+
+The
+[`api/prometheus` directory](https://github.com/prometheus/client_golang/tree/master/api/prometheus)
+contains the client for the
+[Prometheus HTTP API](http://prometheus.io/docs/querying/api/). It allows you
+to write Go applications that query time series data from a Prometheus server.
+
+## Where is `model`, `extraction`, and `text`?
+
+The `model` packages has been moved to
+[`prometheus/common/model`](https://github.com/prometheus/common/tree/master/model).
+
+The `extraction` and `text` packages are now contained in
+[`prometheus/common/expfmt`](https://github.com/prometheus/common/tree/master/expfmt).
+
+## Contributing and community
+
+See the [contributing guidelines](CONTRIBUTING.md) and the
+[Community section](http://prometheus.io/community/) of the homepage.
diff --git a/vendor/github.com/prometheus/client_golang/VERSION b/vendor/github.com/prometheus/client_golang/VERSION
new file mode 100644
index 000000000..a3df0a695
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/VERSION
@@ -0,0 +1 @@
+0.8.0
diff --git a/vendor/github.com/prometheus/client_golang/api/prometheus/api.go b/vendor/github.com/prometheus/client_golang/api/prometheus/api.go
new file mode 100644
index 000000000..3028d741d
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/api/prometheus/api.go
@@ -0,0 +1,345 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package prometheus provides bindings to the Prometheus HTTP API:
+// http://prometheus.io/docs/querying/api/
+package prometheus
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"net/url"
+	"path"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/prometheus/common/model"
+	"golang.org/x/net/context"
+	"golang.org/x/net/context/ctxhttp"
+)
+
+const (
+	statusAPIError = 422
+	apiPrefix      = "/api/v1"
+
+	epQuery       = "/query"
+	epQueryRange  = "/query_range"
+	epLabelValues = "/label/:name/values"
+	epSeries      = "/series"
+)
+
+type ErrorType string
+
+const (
+	// The different API error types.
+	ErrBadData     ErrorType = "bad_data"
+	ErrTimeout               = "timeout"
+	ErrCanceled              = "canceled"
+	ErrExec                  = "execution"
+	ErrBadResponse           = "bad_response"
+)
+
+// Error is an error returned by the API.
+type Error struct {
+	Type ErrorType
+	Msg  string
+}
+
+func (e *Error) Error() string {
+	return fmt.Sprintf("%s: %s", e.Type, e.Msg)
+}
+
+// CancelableTransport is like net.Transport but provides
+// per-request cancelation functionality.
+type CancelableTransport interface {
+	http.RoundTripper
+	CancelRequest(req *http.Request)
+}
+
+var DefaultTransport CancelableTransport = &http.Transport{
+	Proxy: http.ProxyFromEnvironment,
+	Dial: (&net.Dialer{
+		Timeout:   30 * time.Second,
+		KeepAlive: 30 * time.Second,
+	}).Dial,
+	TLSHandshakeTimeout: 10 * time.Second,
+}
+
+// Config defines configuration parameters for a new client.
+type Config struct {
+	// The address of the Prometheus to connect to.
+	Address string
+
+	// Transport is used by the Client to drive HTTP requests. If not
+	// provided, DefaultTransport will be used.
+	Transport CancelableTransport
+}
+
+func (cfg *Config) transport() CancelableTransport {
+	if cfg.Transport == nil {
+		return DefaultTransport
+	}
+	return cfg.Transport
+}
+
+type Client interface {
+	url(ep string, args map[string]string) *url.URL
+	do(context.Context, *http.Request) (*http.Response, []byte, error)
+}
+
+// New returns a new Client.
+//
+// It is safe to use the returned Client from multiple goroutines.
+func New(cfg Config) (Client, error) {
+	u, err := url.Parse(cfg.Address)
+	if err != nil {
+		return nil, err
+	}
+	u.Path = strings.TrimRight(u.Path, "/") + apiPrefix
+
+	return &httpClient{
+		endpoint:  u,
+		transport: cfg.transport(),
+	}, nil
+}
+
+type httpClient struct {
+	endpoint  *url.URL
+	transport CancelableTransport
+}
+
+func (c *httpClient) url(ep string, args map[string]string) *url.URL {
+	p := path.Join(c.endpoint.Path, ep)
+
+	for arg, val := range args {
+		arg = ":" + arg
+		p = strings.Replace(p, arg, val, -1)
+	}
+
+	u := *c.endpoint
+	u.Path = p
+
+	return &u
+}
+
+func (c *httpClient) do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) {
+	resp, err := ctxhttp.Do(ctx, &http.Client{Transport: c.transport}, req)
+
+	defer func() {
+		if resp != nil {
+			resp.Body.Close()
+		}
+	}()
+
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var body []byte
+	done := make(chan struct{})
+	go func() {
+		body, err = ioutil.ReadAll(resp.Body)
+		close(done)
+	}()
+
+	select {
+	case <-ctx.Done():
+		err = resp.Body.Close()
+		<-done
+		if err == nil {
+			err = ctx.Err()
+		}
+	case <-done:
+	}
+
+	return resp, body, err
+}
+
+// apiClient wraps a regular client and processes successful API responses.
+// Successful also includes responses that errored at the API level.
+type apiClient struct {
+	Client
+}
+
+type apiResponse struct {
+	Status    string          `json:"status"`
+	Data      json.RawMessage `json:"data"`
+	ErrorType ErrorType       `json:"errorType"`
+	Error     string          `json:"error"`
+}
+
+func (c apiClient) do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) {
+	resp, body, err := c.Client.do(ctx, req)
+	if err != nil {
+		return resp, body, err
+	}
+
+	code := resp.StatusCode
+
+	if code/100 != 2 && code != statusAPIError {
+		return resp, body, &Error{
+			Type: ErrBadResponse,
+			Msg:  fmt.Sprintf("bad response code %d", resp.StatusCode),
+		}
+	}
+
+	var result apiResponse
+
+	if err = json.Unmarshal(body, &result); err != nil {
+		return resp, body, &Error{
+			Type: ErrBadResponse,
+			Msg:  err.Error(),
+		}
+	}
+
+	if (code == statusAPIError) != (result.Status == "error") {
+		err = &Error{
+			Type: ErrBadResponse,
+			Msg:  "inconsistent body for response code",
+		}
+	}
+
+	if code == statusAPIError && result.Status == "error" {
+		err = &Error{
+			Type: result.ErrorType,
+			Msg:  result.Error,
+		}
+	}
+
+	return resp, []byte(result.Data), err
+}
+
+// Range represents a sliced time range.
+type Range struct {
+	// The boundaries of the time range.
+	Start, End time.Time
+	// The maximum time between two slices within the boundaries.
+	Step time.Duration
+}
+
+// queryResult contains result data for a query.
+type queryResult struct {
+	Type   model.ValueType `json:"resultType"`
+	Result interface{}     `json:"result"`
+
+	// The decoded value.
+	v model.Value
+}
+
+func (qr *queryResult) UnmarshalJSON(b []byte) error {
+	v := struct {
+		Type   model.ValueType `json:"resultType"`
+		Result json.RawMessage `json:"result"`
+	}{}
+
+	err := json.Unmarshal(b, &v)
+	if err != nil {
+		return err
+	}
+
+	switch v.Type {
+	case model.ValScalar:
+		var sv model.Scalar
+		err = json.Unmarshal(v.Result, &sv)
+		qr.v = &sv
+
+	case model.ValVector:
+		var vv model.Vector
+		err = json.Unmarshal(v.Result, &vv)
+		qr.v = vv
+
+	case model.ValMatrix:
+		var mv model.Matrix
+		err = json.Unmarshal(v.Result, &mv)
+		qr.v = mv
+
+	default:
+		err = fmt.Errorf("unexpected value type %q", v.Type)
+	}
+	return err
+}
+
+// QueryAPI provides bindings the Prometheus's query API.
+type QueryAPI interface {
+	// Query performs a query for the given time.
+	Query(ctx context.Context, query string, ts time.Time) (model.Value, error)
+	// Query performs a query for the given range.
+	QueryRange(ctx context.Context, query string, r Range) (model.Value, error)
+}
+
+// NewQueryAPI returns a new QueryAPI for the client.
+//
+// It is safe to use the returned QueryAPI from multiple goroutines.
+func NewQueryAPI(c Client) QueryAPI {
+	return &httpQueryAPI{client: apiClient{c}}
+}
+
+type httpQueryAPI struct {
+	client Client
+}
+
+func (h *httpQueryAPI) Query(ctx context.Context, query string, ts time.Time) (model.Value, error) {
+	u := h.client.url(epQuery, nil)
+	q := u.Query()
+
+	q.Set("query", query)
+	q.Set("time", ts.Format(time.RFC3339Nano))
+
+	u.RawQuery = q.Encode()
+
+	req, _ := http.NewRequest("GET", u.String(), nil)
+
+	_, body, err := h.client.do(ctx, req)
+	if err != nil {
+		return nil, err
+	}
+
+	var qres queryResult
+	err = json.Unmarshal(body, &qres)
+
+	return model.Value(qres.v), err
+}
+
+func (h *httpQueryAPI) QueryRange(ctx context.Context, query string, r Range) (model.Value, error) {
+	u := h.client.url(epQueryRange, nil)
+	q := u.Query()
+
+	var (
+		start = r.Start.Format(time.RFC3339Nano)
+		end   = r.End.Format(time.RFC3339Nano)
+		step  = strconv.FormatFloat(r.Step.Seconds(), 'f', 3, 64)
+	)
+
+	q.Set("query", query)
+	q.Set("start", start)
+	q.Set("end", end)
+	q.Set("step", step)
+
+	u.RawQuery = q.Encode()
+
+	req, _ := http.NewRequest("GET", u.String(), nil)
+
+	_, body, err := h.client.do(ctx, req)
+	if err != nil {
+		return nil, err
+	}
+
+	var qres queryResult
+	err = json.Unmarshal(body, &qres)
+
+	return model.Value(qres.v), err
+}
diff --git a/vendor/github.com/prometheus/client_golang/api/prometheus/api_test.go b/vendor/github.com/prometheus/client_golang/api/prometheus/api_test.go
new file mode 100644
index 000000000..87d3e408e
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/api/prometheus/api_test.go
@@ -0,0 +1,453 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/url"
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/prometheus/common/model"
+	"golang.org/x/net/context"
+)
+
+func TestConfig(t *testing.T) {
+	c := Config{}
+	if c.transport() != DefaultTransport {
+		t.Fatalf("expected default transport for nil Transport field")
+	}
+}
+
+func TestClientURL(t *testing.T) {
+	tests := []struct {
+		address  string
+		endpoint string
+		args     map[string]string
+		expected string
+	}{
+		{
+			address:  "http://localhost:9090",
+			endpoint: "/test",
+			expected: "http://localhost:9090/test",
+		},
+		{
+			address:  "http://localhost",
+			endpoint: "/test",
+			expected: "http://localhost/test",
+		},
+		{
+			address:  "http://localhost:9090",
+			endpoint: "test",
+			expected: "http://localhost:9090/test",
+		},
+		{
+			address:  "http://localhost:9090/prefix",
+			endpoint: "/test",
+			expected: "http://localhost:9090/prefix/test",
+		},
+		{
+			address:  "https://localhost:9090/",
+			endpoint: "/test/",
+			expected: "https://localhost:9090/test",
+		},
+		{
+			address:  "http://localhost:9090",
+			endpoint: "/test/:param",
+			args: map[string]string{
+				"param": "content",
+			},
+			expected: "http://localhost:9090/test/content",
+		},
+		{
+			address:  "http://localhost:9090",
+			endpoint: "/test/:param/more/:param",
+			args: map[string]string{
+				"param": "content",
+			},
+			expected: "http://localhost:9090/test/content/more/content",
+		},
+		{
+			address:  "http://localhost:9090",
+			endpoint: "/test/:param/more/:foo",
+			args: map[string]string{
+				"param": "content",
+				"foo":   "bar",
+			},
+			expected: "http://localhost:9090/test/content/more/bar",
+		},
+		{
+			address:  "http://localhost:9090",
+			endpoint: "/test/:param",
+			args: map[string]string{
+				"nonexistant": "content",
+			},
+			expected: "http://localhost:9090/test/:param",
+		},
+	}
+
+	for _, test := range tests {
+		ep, err := url.Parse(test.address)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		hclient := &httpClient{
+			endpoint:  ep,
+			transport: DefaultTransport,
+		}
+
+		u := hclient.url(test.endpoint, test.args)
+		if u.String() != test.expected {
+			t.Errorf("unexpected result: got %s, want %s", u, test.expected)
+			continue
+		}
+
+		// The apiClient must return exactly the same result as the httpClient.
+		aclient := &apiClient{hclient}
+
+		u = aclient.url(test.endpoint, test.args)
+		if u.String() != test.expected {
+			t.Errorf("unexpected result: got %s, want %s", u, test.expected)
+		}
+	}
+}
+
+type testClient struct {
+	*testing.T
+
+	ch  chan apiClientTest
+	req *http.Request
+}
+
+type apiClientTest struct {
+	code     int
+	response interface{}
+	expected string
+	err      *Error
+}
+
+func (c *testClient) url(ep string, args map[string]string) *url.URL {
+	return nil
+}
+
+func (c *testClient) do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) {
+	if ctx == nil {
+		c.Fatalf("context was not passed down")
+	}
+	if req != c.req {
+		c.Fatalf("request was not passed down")
+	}
+
+	test := <-c.ch
+
+	var b []byte
+	var err error
+
+	switch v := test.response.(type) {
+	case string:
+		b = []byte(v)
+	default:
+		b, err = json.Marshal(v)
+		if err != nil {
+			c.Fatal(err)
+		}
+	}
+
+	resp := &http.Response{
+		StatusCode: test.code,
+	}
+
+	return resp, b, nil
+}
+
+func TestAPIClientDo(t *testing.T) {
+	tests := []apiClientTest{
+		{
+			response: &apiResponse{
+				Status:    "error",
+				Data:      json.RawMessage(`null`),
+				ErrorType: ErrBadData,
+				Error:     "failed",
+			},
+			err: &Error{
+				Type: ErrBadData,
+				Msg:  "failed",
+			},
+			code:     statusAPIError,
+			expected: `null`,
+		},
+		{
+			response: &apiResponse{
+				Status:    "error",
+				Data:      json.RawMessage(`"test"`),
+				ErrorType: ErrTimeout,
+				Error:     "timed out",
+			},
+			err: &Error{
+				Type: ErrTimeout,
+				Msg:  "timed out",
+			},
+			code:     statusAPIError,
+			expected: `test`,
+		},
+		{
+			response: "bad json",
+			err: &Error{
+				Type: ErrBadResponse,
+				Msg:  "bad response code 400",
+			},
+			code: http.StatusBadRequest,
+		},
+		{
+			response: "bad json",
+			err: &Error{
+				Type: ErrBadResponse,
+				Msg:  "invalid character 'b' looking for beginning of value",
+			},
+			code: statusAPIError,
+		},
+		{
+			response: &apiResponse{
+				Status: "success",
+				Data:   json.RawMessage(`"test"`),
+			},
+			err: &Error{
+				Type: ErrBadResponse,
+				Msg:  "inconsistent body for response code",
+			},
+			code: statusAPIError,
+		},
+		{
+			response: &apiResponse{
+				Status:    "success",
+				Data:      json.RawMessage(`"test"`),
+				ErrorType: ErrTimeout,
+				Error:     "timed out",
+			},
+			err: &Error{
+				Type: ErrBadResponse,
+				Msg:  "inconsistent body for response code",
+			},
+			code: statusAPIError,
+		},
+		{
+			response: &apiResponse{
+				Status:    "error",
+				Data:      json.RawMessage(`"test"`),
+				ErrorType: ErrTimeout,
+				Error:     "timed out",
+			},
+			err: &Error{
+				Type: ErrBadResponse,
+				Msg:  "inconsistent body for response code",
+			},
+			code: http.StatusOK,
+		},
+	}
+
+	tc := &testClient{
+		T:   t,
+		ch:  make(chan apiClientTest, 1),
+		req: &http.Request{},
+	}
+	client := &apiClient{tc}
+
+	for _, test := range tests {
+
+		tc.ch <- test
+
+		_, body, err := client.do(context.Background(), tc.req)
+
+		if test.err != nil {
+			if err == nil {
+				t.Errorf("expected error %q but got none", test.err)
+				continue
+			}
+			if test.err.Error() != err.Error() {
+				t.Errorf("unexpected error: want %q, got %q", test.err, err)
+			}
+			continue
+		}
+		if err != nil {
+			t.Errorf("unexpeceted error %s", err)
+			continue
+		}
+
+		want, got := test.expected, string(body)
+		if want != got {
+			t.Errorf("unexpected body: want %q, got %q", want, got)
+		}
+	}
+}
+
+type apiTestClient struct {
+	*testing.T
+	curTest apiTest
+}
+
+type apiTest struct {
+	do    func() (interface{}, error)
+	inErr error
+	inRes interface{}
+
+	reqPath   string
+	reqParam  url.Values
+	reqMethod string
+	res       interface{}
+	err       error
+}
+
+func (c *apiTestClient) url(ep string, args map[string]string) *url.URL {
+	u := &url.URL{
+		Host: "test:9090",
+		Path: apiPrefix + ep,
+	}
+	return u
+}
+
+func (c *apiTestClient) do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) {
+
+	test := c.curTest
+
+	if req.URL.Path != test.reqPath {
+		c.Errorf("unexpected request path: want %s, got %s", test.reqPath, req.URL.Path)
+	}
+	if req.Method != test.reqMethod {
+		c.Errorf("unexpected request method: want %s, got %s", test.reqMethod, req.Method)
+	}
+
+	b, err := json.Marshal(test.inRes)
+	if err != nil {
+		c.Fatal(err)
+	}
+
+	resp := &http.Response{}
+	if test.inErr != nil {
+		resp.StatusCode = statusAPIError
+	} else {
+		resp.StatusCode = http.StatusOK
+	}
+
+	return resp, b, test.inErr
+}
+
+func TestAPIs(t *testing.T) {
+
+	testTime := time.Now()
+
+	client := &apiTestClient{T: t}
+
+	queryApi := &httpQueryAPI{
+		client: client,
+	}
+
+	doQuery := func(q string, ts time.Time) func() (interface{}, error) {
+		return func() (interface{}, error) {
+			return queryApi.Query(context.Background(), q, ts)
+		}
+	}
+
+	doQueryRange := func(q string, rng Range) func() (interface{}, error) {
+		return func() (interface{}, error) {
+			return queryApi.QueryRange(context.Background(), q, rng)
+		}
+	}
+
+	queryTests := []apiTest{
+		{
+			do: doQuery("2", testTime),
+			inRes: &queryResult{
+				Type: model.ValScalar,
+				Result: &model.Scalar{
+					Value:     2,
+					Timestamp: model.TimeFromUnix(testTime.Unix()),
+				},
+			},
+
+			reqMethod: "GET",
+			reqPath:   "/api/v1/query",
+			reqParam: url.Values{
+				"query": []string{"2"},
+				"time":  []string{testTime.Format(time.RFC3339Nano)},
+			},
+			res: &model.Scalar{
+				Value:     2,
+				Timestamp: model.TimeFromUnix(testTime.Unix()),
+			},
+		},
+		{
+			do:    doQuery("2", testTime),
+			inErr: fmt.Errorf("some error"),
+
+			reqMethod: "GET",
+			reqPath:   "/api/v1/query",
+			reqParam: url.Values{
+				"query": []string{"2"},
+				"time":  []string{testTime.Format(time.RFC3339Nano)},
+			},
+			err: fmt.Errorf("some error"),
+		},
+
+		{
+			do: doQueryRange("2", Range{
+				Start: testTime.Add(-time.Minute),
+				End:   testTime,
+				Step:  time.Minute,
+			}),
+			inErr: fmt.Errorf("some error"),
+
+			reqMethod: "GET",
+			reqPath:   "/api/v1/query_range",
+			reqParam: url.Values{
+				"query": []string{"2"},
+				"start": []string{testTime.Add(-time.Minute).Format(time.RFC3339Nano)},
+				"end":   []string{testTime.Format(time.RFC3339Nano)},
+				"step":  []string{time.Minute.String()},
+			},
+			err: fmt.Errorf("some error"),
+		},
+	}
+
+	var tests []apiTest
+	tests = append(tests, queryTests...)
+
+	for _, test := range tests {
+		client.curTest = test
+
+		res, err := test.do()
+
+		if test.err != nil {
+			if err == nil {
+				t.Errorf("expected error %q but got none", test.err)
+				continue
+			}
+			if err.Error() != test.err.Error() {
+				t.Errorf("unexpected error: want %s, got %s", test.err, err)
+			}
+			continue
+		}
+		if err != nil {
+			t.Errorf("unexpected error: %s", err)
+			continue
+		}
+
+		if !reflect.DeepEqual(res, test.res) {
+			t.Errorf("unexpected result: want %v, got %v", test.res, res)
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/examples/random/main.go b/vendor/github.com/prometheus/client_golang/examples/random/main.go
new file mode 100644
index 000000000..563957193
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/examples/random/main.go
@@ -0,0 +1,103 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// A simple example exposing fictional RPC latencies with different types of
+// random distributions (uniform, normal, and exponential) as Prometheus
+// metrics.
+package main
+
+import (
+	"flag"
+	"math"
+	"math/rand"
+	"net/http"
+	"time"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+var (
+	addr              = flag.String("listen-address", ":8080", "The address to listen on for HTTP requests.")
+	uniformDomain     = flag.Float64("uniform.domain", 200, "The domain for the uniform distribution.")
+	normDomain        = flag.Float64("normal.domain", 200, "The domain for the normal distribution.")
+	normMean          = flag.Float64("normal.mean", 10, "The mean for the normal distribution.")
+	oscillationPeriod = flag.Duration("oscillation-period", 10*time.Minute, "The duration of the rate oscillation period.")
+)
+
+var (
+	// Create a summary to track fictional interservice RPC latencies for three
+	// distinct services with different latency distributions. These services are
+	// differentiated via a "service" label.
+	rpcDurations = prometheus.NewSummaryVec(
+		prometheus.SummaryOpts{
+			Name: "rpc_durations_microseconds",
+			Help: "RPC latency distributions.",
+		},
+		[]string{"service"},
+	)
+	// The same as above, but now as a histogram, and only for the normal
+	// distribution. The buckets are targeted to the parameters of the
+	// normal distribution, with 20 buckets centered on the mean, each
+	// half-sigma wide.
+	rpcDurationsHistogram = prometheus.NewHistogram(prometheus.HistogramOpts{
+		Name:    "rpc_durations_histogram_microseconds",
+		Help:    "RPC latency distributions.",
+		Buckets: prometheus.LinearBuckets(*normMean-5**normDomain, .5**normDomain, 20),
+	})
+)
+
+func init() {
+	// Register the summary and the histogram with Prometheus's default registry.
+	prometheus.MustRegister(rpcDurations)
+	prometheus.MustRegister(rpcDurationsHistogram)
+}
+
+func main() {
+	flag.Parse()
+
+	start := time.Now()
+
+	oscillationFactor := func() float64 {
+		return 2 + math.Sin(math.Sin(2*math.Pi*float64(time.Since(start))/float64(*oscillationPeriod)))
+	}
+
+	// Periodically record some sample latencies for the three services.
+	go func() {
+		for {
+			v := rand.Float64() * *uniformDomain
+			rpcDurations.WithLabelValues("uniform").Observe(v)
+			time.Sleep(time.Duration(100*oscillationFactor()) * time.Millisecond)
+		}
+	}()
+
+	go func() {
+		for {
+			v := (rand.NormFloat64() * *normDomain) + *normMean
+			rpcDurations.WithLabelValues("normal").Observe(v)
+			rpcDurationsHistogram.Observe(v)
+			time.Sleep(time.Duration(75*oscillationFactor()) * time.Millisecond)
+		}
+	}()
+
+	go func() {
+		for {
+			v := rand.ExpFloat64()
+			rpcDurations.WithLabelValues("exponential").Observe(v)
+			time.Sleep(time.Duration(50*oscillationFactor()) * time.Millisecond)
+		}
+	}()
+
+	// Expose the registered metrics via HTTP.
+	http.Handle("/metrics", prometheus.Handler())
+	http.ListenAndServe(*addr, nil)
+}
diff --git a/vendor/github.com/prometheus/client_golang/examples/simple/main.go b/vendor/github.com/prometheus/client_golang/examples/simple/main.go
new file mode 100644
index 000000000..19620d2b3
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/examples/simple/main.go
@@ -0,0 +1,30 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// A minimal example of how to include Prometheus instrumentation.
+package main
+
+import (
+	"flag"
+	"net/http"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+var addr = flag.String("listen-address", ":8080", "The address to listen on for HTTP requests.")
+
+func main() {
+	flag.Parse()
+	http.Handle("/metrics", prometheus.Handler())
+	http.ListenAndServe(*addr, nil)
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/.gitignore b/vendor/github.com/prometheus/client_golang/prometheus/.gitignore
new file mode 100644
index 000000000..3460f0346
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/.gitignore
@@ -0,0 +1 @@
+command-line-arguments.test
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/README.md b/vendor/github.com/prometheus/client_golang/prometheus/README.md
new file mode 100644
index 000000000..44986bff0
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/README.md
@@ -0,0 +1 @@
+See [![go-doc](https://godoc.org/github.com/prometheus/client_golang/prometheus?status.svg)](https://godoc.org/github.com/prometheus/client_golang/prometheus).
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/benchmark_test.go b/vendor/github.com/prometheus/client_golang/prometheus/benchmark_test.go
new file mode 100644
index 000000000..a3d86698b
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/benchmark_test.go
@@ -0,0 +1,183 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"sync"
+	"testing"
+)
+
+func BenchmarkCounterWithLabelValues(b *testing.B) {
+	m := NewCounterVec(
+		CounterOpts{
+			Name: "benchmark_counter",
+			Help: "A counter to benchmark it.",
+		},
+		[]string{"one", "two", "three"},
+	)
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.WithLabelValues("eins", "zwei", "drei").Inc()
+	}
+}
+
+func BenchmarkCounterWithLabelValuesConcurrent(b *testing.B) {
+	m := NewCounterVec(
+		CounterOpts{
+			Name: "benchmark_counter",
+			Help: "A counter to benchmark it.",
+		},
+		[]string{"one", "two", "three"},
+	)
+	b.ReportAllocs()
+	b.ResetTimer()
+	wg := sync.WaitGroup{}
+	for i := 0; i < 10; i++ {
+		wg.Add(1)
+		go func() {
+			for j := 0; j < b.N/10; j++ {
+				m.WithLabelValues("eins", "zwei", "drei").Inc()
+			}
+			wg.Done()
+		}()
+	}
+	wg.Wait()
+}
+
+func BenchmarkCounterWithMappedLabels(b *testing.B) {
+	m := NewCounterVec(
+		CounterOpts{
+			Name: "benchmark_counter",
+			Help: "A counter to benchmark it.",
+		},
+		[]string{"one", "two", "three"},
+	)
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.With(Labels{"two": "zwei", "one": "eins", "three": "drei"}).Inc()
+	}
+}
+
+func BenchmarkCounterWithPreparedMappedLabels(b *testing.B) {
+	m := NewCounterVec(
+		CounterOpts{
+			Name: "benchmark_counter",
+			Help: "A counter to benchmark it.",
+		},
+		[]string{"one", "two", "three"},
+	)
+	b.ReportAllocs()
+	b.ResetTimer()
+	labels := Labels{"two": "zwei", "one": "eins", "three": "drei"}
+	for i := 0; i < b.N; i++ {
+		m.With(labels).Inc()
+	}
+}
+
+func BenchmarkCounterNoLabels(b *testing.B) {
+	m := NewCounter(CounterOpts{
+		Name: "benchmark_counter",
+		Help: "A counter to benchmark it.",
+	})
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.Inc()
+	}
+}
+
+func BenchmarkGaugeWithLabelValues(b *testing.B) {
+	m := NewGaugeVec(
+		GaugeOpts{
+			Name: "benchmark_gauge",
+			Help: "A gauge to benchmark it.",
+		},
+		[]string{"one", "two", "three"},
+	)
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.WithLabelValues("eins", "zwei", "drei").Set(3.1415)
+	}
+}
+
+func BenchmarkGaugeNoLabels(b *testing.B) {
+	m := NewGauge(GaugeOpts{
+		Name: "benchmark_gauge",
+		Help: "A gauge to benchmark it.",
+	})
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.Set(3.1415)
+	}
+}
+
+func BenchmarkSummaryWithLabelValues(b *testing.B) {
+	m := NewSummaryVec(
+		SummaryOpts{
+			Name: "benchmark_summary",
+			Help: "A summary to benchmark it.",
+		},
+		[]string{"one", "two", "three"},
+	)
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.WithLabelValues("eins", "zwei", "drei").Observe(3.1415)
+	}
+}
+
+func BenchmarkSummaryNoLabels(b *testing.B) {
+	m := NewSummary(SummaryOpts{
+		Name: "benchmark_summary",
+		Help: "A summary to benchmark it.",
+	},
+	)
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.Observe(3.1415)
+	}
+}
+
+func BenchmarkHistogramWithLabelValues(b *testing.B) {
+	m := NewHistogramVec(
+		HistogramOpts{
+			Name: "benchmark_histogram",
+			Help: "A histogram to benchmark it.",
+		},
+		[]string{"one", "two", "three"},
+	)
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.WithLabelValues("eins", "zwei", "drei").Observe(3.1415)
+	}
+}
+
+func BenchmarkHistogramNoLabels(b *testing.B) {
+	m := NewHistogram(HistogramOpts{
+		Name: "benchmark_histogram",
+		Help: "A histogram to benchmark it.",
+	},
+	)
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.Observe(3.1415)
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/collector.go b/vendor/github.com/prometheus/client_golang/prometheus/collector.go
new file mode 100644
index 000000000..623d3d83f
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/collector.go
@@ -0,0 +1,75 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+// Collector is the interface implemented by anything that can be used by
+// Prometheus to collect metrics. A Collector has to be registered for
+// collection. See Registerer.Register.
+//
+// The stock metrics provided by this package (Gauge, Counter, Summary,
+// Histogram, Untyped) are also Collectors (which only ever collect one metric,
+// namely itself). An implementer of Collector may, however, collect multiple
+// metrics in a coordinated fashion and/or create metrics on the fly. Examples
+// for collectors already implemented in this library are the metric vectors
+// (i.e. collection of multiple instances of the same Metric but with different
+// label values) like GaugeVec or SummaryVec, and the ExpvarCollector.
+type Collector interface {
+	// Describe sends the super-set of all possible descriptors of metrics
+	// collected by this Collector to the provided channel and returns once
+	// the last descriptor has been sent. The sent descriptors fulfill the
+	// consistency and uniqueness requirements described in the Desc
+	// documentation. (It is valid if one and the same Collector sends
+	// duplicate descriptors. Those duplicates are simply ignored. However,
+	// two different Collectors must not send duplicate descriptors.) This
+	// method idempotently sends the same descriptors throughout the
+	// lifetime of the Collector. If a Collector encounters an error while
+	// executing this method, it must send an invalid descriptor (created
+	// with NewInvalidDesc) to signal the error to the registry.
+	Describe(chan<- *Desc)
+	// Collect is called by the Prometheus registry when collecting
+	// metrics. The implementation sends each collected metric via the
+	// provided channel and returns once the last metric has been sent. The
+	// descriptor of each sent metric is one of those returned by
+	// Describe. Returned metrics that share the same descriptor must differ
+	// in their variable label values. This method may be called
+	// concurrently and must therefore be implemented in a concurrency safe
+	// way. Blocking occurs at the expense of total performance of rendering
+	// all registered metrics. Ideally, Collector implementations support
+	// concurrent readers.
+	Collect(chan<- Metric)
+}
+
+// selfCollector implements Collector for a single Metric so that the Metric
+// collects itself. Add it as an anonymous field to a struct that implements
+// Metric, and call init with the Metric itself as an argument.
+type selfCollector struct {
+	self Metric
+}
+
+// init provides the selfCollector with a reference to the metric it is supposed
+// to collect. It is usually called within the factory function to create a
+// metric. See example.
+func (c *selfCollector) init(self Metric) {
+	c.self = self
+}
+
+// Describe implements Collector.
+func (c *selfCollector) Describe(ch chan<- *Desc) {
+	ch <- c.self.Desc()
+}
+
+// Collect implements Collector.
+func (c *selfCollector) Collect(ch chan<- Metric) {
+	ch <- c.self
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/counter.go b/vendor/github.com/prometheus/client_golang/prometheus/counter.go
new file mode 100644
index 000000000..ee37949ad
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/counter.go
@@ -0,0 +1,172 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"errors"
+)
+
+// Counter is a Metric that represents a single numerical value that only ever
+// goes up. That implies that it cannot be used to count items whose number can
+// also go down, e.g. the number of currently running goroutines. Those
+// "counters" are represented by Gauges.
+//
+// A Counter is typically used to count requests served, tasks completed, errors
+// occurred, etc.
+//
+// To create Counter instances, use NewCounter.
+type Counter interface {
+	Metric
+	Collector
+
+	// Set is used to set the Counter to an arbitrary value. It is only used
+	// if you have to transfer a value from an external counter into this
+	// Prometheus metric. Do not use it for regular handling of a
+	// Prometheus counter (as it can be used to break the contract of
+	// monotonically increasing values).
+	//
+	// Deprecated: Use NewConstMetric to create a counter for an external
+	// value. A Counter should never be set.
+	Set(float64)
+	// Inc increments the counter by 1.
+	Inc()
+	// Add adds the given value to the counter. It panics if the value is <
+	// 0.
+	Add(float64)
+}
+
+// CounterOpts is an alias for Opts. See there for doc comments.
+type CounterOpts Opts
+
+// NewCounter creates a new Counter based on the provided CounterOpts.
+func NewCounter(opts CounterOpts) Counter {
+	desc := NewDesc(
+		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		opts.Help,
+		nil,
+		opts.ConstLabels,
+	)
+	result := &counter{value: value{desc: desc, valType: CounterValue, labelPairs: desc.constLabelPairs}}
+	result.init(result) // Init self-collection.
+	return result
+}
+
+type counter struct {
+	value
+}
+
+func (c *counter) Add(v float64) {
+	if v < 0 {
+		panic(errors.New("counter cannot decrease in value"))
+	}
+	c.value.Add(v)
+}
+
+// CounterVec is a Collector that bundles a set of Counters that all share the
+// same Desc, but have different values for their variable labels. This is used
+// if you want to count the same thing partitioned by various dimensions
+// (e.g. number of HTTP requests, partitioned by response code and
+// method). Create instances with NewCounterVec.
+//
+// CounterVec embeds MetricVec. See there for a full list of methods with
+// detailed documentation.
+type CounterVec struct {
+	*MetricVec
+}
+
+// NewCounterVec creates a new CounterVec based on the provided CounterOpts and
+// partitioned by the given label names. At least one label name must be
+// provided.
+func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec {
+	desc := NewDesc(
+		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		opts.Help,
+		labelNames,
+		opts.ConstLabels,
+	)
+	return &CounterVec{
+		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
+			result := &counter{value: value{
+				desc:       desc,
+				valType:    CounterValue,
+				labelPairs: makeLabelPairs(desc, lvs),
+			}}
+			result.init(result) // Init self-collection.
+			return result
+		}),
+	}
+}
+
+// GetMetricWithLabelValues replaces the method of the same name in
+// MetricVec. The difference is that this method returns a Counter and not a
+// Metric so that no type conversion is required.
+func (m *CounterVec) GetMetricWithLabelValues(lvs ...string) (Counter, error) {
+	metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...)
+	if metric != nil {
+		return metric.(Counter), err
+	}
+	return nil, err
+}
+
+// GetMetricWith replaces the method of the same name in MetricVec. The
+// difference is that this method returns a Counter and not a Metric so that no
+// type conversion is required.
+func (m *CounterVec) GetMetricWith(labels Labels) (Counter, error) {
+	metric, err := m.MetricVec.GetMetricWith(labels)
+	if metric != nil {
+		return metric.(Counter), err
+	}
+	return nil, err
+}
+
+// WithLabelValues works as GetMetricWithLabelValues, but panics where
+// GetMetricWithLabelValues would have returned an error. By not returning an
+// error, WithLabelValues allows shortcuts like
+//     myVec.WithLabelValues("404", "GET").Add(42)
+func (m *CounterVec) WithLabelValues(lvs ...string) Counter {
+	return m.MetricVec.WithLabelValues(lvs...).(Counter)
+}
+
+// With works as GetMetricWith, but panics where GetMetricWithLabels would have
+// returned an error. By not returning an error, With allows shortcuts like
+//     myVec.With(Labels{"code": "404", "method": "GET"}).Add(42)
+func (m *CounterVec) With(labels Labels) Counter {
+	return m.MetricVec.With(labels).(Counter)
+}
+
+// CounterFunc is a Counter whose value is determined at collect time by calling a
+// provided function.
+//
+// To create CounterFunc instances, use NewCounterFunc.
+type CounterFunc interface {
+	Metric
+	Collector
+}
+
+// NewCounterFunc creates a new CounterFunc based on the provided
+// CounterOpts. The value reported is determined by calling the given function
+// from within the Write method. Take into account that metric collection may
+// happen concurrently. If that results in concurrent calls to Write, like in
+// the case where a CounterFunc is directly registered with Prometheus, the
+// provided function must be concurrency-safe. The function should also honor
+// the contract for a Counter (values only go up, not down), but compliance will
+// not be checked.
+func NewCounterFunc(opts CounterOpts, function func() float64) CounterFunc {
+	return newValueFunc(NewDesc(
+		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		opts.Help,
+		nil,
+		opts.ConstLabels,
+	), CounterValue, function)
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/counter_test.go b/vendor/github.com/prometheus/client_golang/prometheus/counter_test.go
new file mode 100644
index 000000000..67391a23a
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/counter_test.go
@@ -0,0 +1,58 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"math"
+	"testing"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+func TestCounterAdd(t *testing.T) {
+	counter := NewCounter(CounterOpts{
+		Name:        "test",
+		Help:        "test help",
+		ConstLabels: Labels{"a": "1", "b": "2"},
+	}).(*counter)
+	counter.Inc()
+	if expected, got := 1., math.Float64frombits(counter.valBits); expected != got {
+		t.Errorf("Expected %f, got %f.", expected, got)
+	}
+	counter.Add(42)
+	if expected, got := 43., math.Float64frombits(counter.valBits); expected != got {
+		t.Errorf("Expected %f, got %f.", expected, got)
+	}
+
+	if expected, got := "counter cannot decrease in value", decreaseCounter(counter).Error(); expected != got {
+		t.Errorf("Expected error %q, got %q.", expected, got)
+	}
+
+	m := &dto.Metric{}
+	counter.Write(m)
+
+	if expected, got := `label:<name:"a" value:"1" > label:<name:"b" value:"2" > counter:<value:43 > `, m.String(); expected != got {
+		t.Errorf("expected %q, got %q", expected, got)
+	}
+}
+
+func decreaseCounter(c *counter) (err error) {
+	defer func() {
+		if e := recover(); e != nil {
+			err = e.(error)
+		}
+	}()
+	c.Add(-1)
+	return nil
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/desc.go b/vendor/github.com/prometheus/client_golang/prometheus/desc.go
new file mode 100644
index 000000000..77f4b30e8
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/desc.go
@@ -0,0 +1,205 @@
+// Copyright 2016 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"errors"
+	"fmt"
+	"regexp"
+	"sort"
+	"strings"
+
+	"github.com/golang/protobuf/proto"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+var (
+	metricNameRE = regexp.MustCompile(`^[a-zA-Z_][a-zA-Z0-9_:]*$`)
+	labelNameRE  = regexp.MustCompile("^[a-zA-Z_][a-zA-Z0-9_]*$")
+)
+
+// reservedLabelPrefix is a prefix which is not legal in user-supplied
+// label names.
+const reservedLabelPrefix = "__"
+
+// Labels represents a collection of label name -> value mappings. This type is
+// commonly used with the With(Labels) and GetMetricWith(Labels) methods of
+// metric vector Collectors, e.g.:
+//     myVec.With(Labels{"code": "404", "method": "GET"}).Add(42)
+//
+// The other use-case is the specification of constant label pairs in Opts or to
+// create a Desc.
+type Labels map[string]string
+
+// Desc is the descriptor used by every Prometheus Metric. It is essentially
+// the immutable meta-data of a Metric. The normal Metric implementations
+// included in this package manage their Desc under the hood. Users only have to
+// deal with Desc if they use advanced features like the ExpvarCollector or
+// custom Collectors and Metrics.
+//
+// Descriptors registered with the same registry have to fulfill certain
+// consistency and uniqueness criteria if they share the same fully-qualified
+// name: They must have the same help string and the same label names (aka label
+// dimensions) in each, constLabels and variableLabels, but they must differ in
+// the values of the constLabels.
+//
+// Descriptors that share the same fully-qualified names and the same label
+// values of their constLabels are considered equal.
+//
+// Use NewDesc to create new Desc instances.
+type Desc struct {
+	// fqName has been built from Namespace, Subsystem, and Name.
+	fqName string
+	// help provides some helpful information about this metric.
+	help string
+	// constLabelPairs contains precalculated DTO label pairs based on
+	// the constant labels.
+	constLabelPairs []*dto.LabelPair
+	// VariableLabels contains names of labels for which the metric
+	// maintains variable values.
+	variableLabels []string
+	// id is a hash of the values of the ConstLabels and fqName. This
+	// must be unique among all registered descriptors and can therefore be
+	// used as an identifier of the descriptor.
+	id uint64
+	// dimHash is a hash of the label names (preset and variable) and the
+	// Help string. Each Desc with the same fqName must have the same
+	// dimHash.
+	dimHash uint64
+	// err is an error that occured during construction. It is reported on
+	// registration time.
+	err error
+}
+
+// NewDesc allocates and initializes a new Desc. Errors are recorded in the Desc
+// and will be reported on registration time. variableLabels and constLabels can
+// be nil if no such labels should be set. fqName and help must not be empty.
+//
+// variableLabels only contain the label names. Their label values are variable
+// and therefore not part of the Desc. (They are managed within the Metric.)
+//
+// For constLabels, the label values are constant. Therefore, they are fully
+// specified in the Desc. See the Opts documentation for the implications of
+// constant labels.
+func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) *Desc {
+	d := &Desc{
+		fqName:         fqName,
+		help:           help,
+		variableLabels: variableLabels,
+	}
+	if help == "" {
+		d.err = errors.New("empty help string")
+		return d
+	}
+	if !metricNameRE.MatchString(fqName) {
+		d.err = fmt.Errorf("%q is not a valid metric name", fqName)
+		return d
+	}
+	// labelValues contains the label values of const labels (in order of
+	// their sorted label names) plus the fqName (at position 0).
+	labelValues := make([]string, 1, len(constLabels)+1)
+	labelValues[0] = fqName
+	labelNames := make([]string, 0, len(constLabels)+len(variableLabels))
+	labelNameSet := map[string]struct{}{}
+	// First add only the const label names and sort them...
+	for labelName := range constLabels {
+		if !checkLabelName(labelName) {
+			d.err = fmt.Errorf("%q is not a valid label name", labelName)
+			return d
+		}
+		labelNames = append(labelNames, labelName)
+		labelNameSet[labelName] = struct{}{}
+	}
+	sort.Strings(labelNames)
+	// ... so that we can now add const label values in the order of their names.
+	for _, labelName := range labelNames {
+		labelValues = append(labelValues, constLabels[labelName])
+	}
+	// Now add the variable label names, but prefix them with something that
+	// cannot be in a regular label name. That prevents matching the label
+	// dimension with a different mix between preset and variable labels.
+	for _, labelName := range variableLabels {
+		if !checkLabelName(labelName) {
+			d.err = fmt.Errorf("%q is not a valid label name", labelName)
+			return d
+		}
+		labelNames = append(labelNames, "$"+labelName)
+		labelNameSet[labelName] = struct{}{}
+	}
+	if len(labelNames) != len(labelNameSet) {
+		d.err = errors.New("duplicate label names")
+		return d
+	}
+	vh := hashNew()
+	for _, val := range labelValues {
+		vh = hashAdd(vh, val)
+		vh = hashAddByte(vh, separatorByte)
+	}
+	d.id = vh
+	// Sort labelNames so that order doesn't matter for the hash.
+	sort.Strings(labelNames)
+	// Now hash together (in this order) the help string and the sorted
+	// label names.
+	lh := hashNew()
+	lh = hashAdd(lh, help)
+	lh = hashAddByte(lh, separatorByte)
+	for _, labelName := range labelNames {
+		lh = hashAdd(lh, labelName)
+		lh = hashAddByte(lh, separatorByte)
+	}
+	d.dimHash = lh
+
+	d.constLabelPairs = make([]*dto.LabelPair, 0, len(constLabels))
+	for n, v := range constLabels {
+		d.constLabelPairs = append(d.constLabelPairs, &dto.LabelPair{
+			Name:  proto.String(n),
+			Value: proto.String(v),
+		})
+	}
+	sort.Sort(LabelPairSorter(d.constLabelPairs))
+	return d
+}
+
+// NewInvalidDesc returns an invalid descriptor, i.e. a descriptor with the
+// provided error set. If a collector returning such a descriptor is registered,
+// registration will fail with the provided error. NewInvalidDesc can be used by
+// a Collector to signal inability to describe itself.
+func NewInvalidDesc(err error) *Desc {
+	return &Desc{
+		err: err,
+	}
+}
+
+func (d *Desc) String() string {
+	lpStrings := make([]string, 0, len(d.constLabelPairs))
+	for _, lp := range d.constLabelPairs {
+		lpStrings = append(
+			lpStrings,
+			fmt.Sprintf("%s=%q", lp.GetName(), lp.GetValue()),
+		)
+	}
+	return fmt.Sprintf(
+		"Desc{fqName: %q, help: %q, constLabels: {%s}, variableLabels: %v}",
+		d.fqName,
+		d.help,
+		strings.Join(lpStrings, ","),
+		d.variableLabels,
+	)
+}
+
+func checkLabelName(l string) bool {
+	return labelNameRE.MatchString(l) &&
+		!strings.HasPrefix(l, reservedLabelPrefix)
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/doc.go b/vendor/github.com/prometheus/client_golang/prometheus/doc.go
new file mode 100644
index 000000000..b15a2d3b9
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/doc.go
@@ -0,0 +1,181 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package prometheus provides metrics primitives to instrument code for
+// monitoring. It also offers a registry for metrics. Sub-packages allow to
+// expose the registered metrics via HTTP (package promhttp) or push them to a
+// Pushgateway (package push).
+//
+// All exported functions and methods are safe to be used concurrently unless
+//specified otherwise.
+//
+// A Basic Example
+//
+// As a starting point, a very basic usage example:
+//
+//    package main
+//
+//    import (
+//    	"net/http"
+//
+//    	"github.com/prometheus/client_golang/prometheus"
+//    	"github.com/prometheus/client_golang/prometheus/promhttp"
+//    )
+//
+//    var (
+//    	cpuTemp = prometheus.NewGauge(prometheus.GaugeOpts{
+//    		Name: "cpu_temperature_celsius",
+//    		Help: "Current temperature of the CPU.",
+//    	})
+//    	hdFailures = prometheus.NewCounterVec(
+//    		prometheus.CounterOpts{
+//    			Name: "hd_errors_total",
+//    			Help: "Number of hard-disk errors.",
+//    		},
+//    		[]string{"device"},
+//    	)
+//    )
+//
+//    func init() {
+//    	// Metrics have to be registered to be exposed:
+//    	prometheus.MustRegister(cpuTemp)
+//    	prometheus.MustRegister(hdFailures)
+//    }
+//
+//    func main() {
+//    	cpuTemp.Set(65.3)
+//    	hdFailures.With(prometheus.Labels{"device":"/dev/sda"}).Inc()
+//
+//    	// The Handler function provides a default handler to expose metrics
+//    	// via an HTTP server. "/metrics" is the usual endpoint for that.
+//    	http.Handle("/metrics", promhttp.Handler())
+//    	http.ListenAndServe(":8080", nil)
+//    }
+//
+//
+// This is a complete program that exports two metrics, a Gauge and a Counter,
+// the latter with a label attached to turn it into a (one-dimensional) vector.
+//
+// Metrics
+//
+// The number of exported identifiers in this package might appear a bit
+// overwhelming. Hovever, in addition to the basic plumbing shown in the example
+// above, you only need to understand the different metric types and their
+// vector versions for basic usage.
+//
+// Above, you have already touched the Counter and the Gauge. There are two more
+// advanced metric types: the Summary and Histogram. A more thorough description
+// of those four metric types can be found in the Prometheus docs:
+// https://prometheus.io/docs/concepts/metric_types/
+//
+// A fifth "type" of metric is Untyped. It behaves like a Gauge, but signals the
+// Prometheus server not to assume anything about its type.
+//
+// In addition to the fundamental metric types Gauge, Counter, Summary,
+// Histogram, and Untyped, a very important part of the Prometheus data model is
+// the partitioning of samples along dimensions called labels, which results in
+// metric vectors. The fundamental types are GaugeVec, CounterVec, SummaryVec,
+// HistogramVec, and UntypedVec.
+//
+// While only the fundamental metric types implement the Metric interface, both
+// the metrics and their vector versions implement the Collector interface. A
+// Collector manages the collection of a number of Metrics, but for convenience,
+// a Metric can also “collect itself”. Note that Gauge, Counter, Summary,
+// Histogram, and Untyped are interfaces themselves while GaugeVec, CounterVec,
+// SummaryVec, HistogramVec, and UntypedVec are not.
+//
+// To create instances of Metrics and their vector versions, you need a suitable
+// …Opts struct, i.e. GaugeOpts, CounterOpts, SummaryOpts,
+// HistogramOpts, or UntypedOpts.
+//
+// Custom Collectors and constant Metrics
+//
+// While you could create your own implementations of Metric, most likely you
+// will only ever implement the Collector interface on your own. At a first
+// glance, a custom Collector seems handy to bundle Metrics for common
+// registration (with the prime example of the different metric vectors above,
+// which bundle all the metrics of the same name but with different labels).
+//
+// There is a more involved use case, too: If you already have metrics
+// available, created outside of the Prometheus context, you don't need the
+// interface of the various Metric types. You essentially want to mirror the
+// existing numbers into Prometheus Metrics during collection. An own
+// implementation of the Collector interface is perfect for that. You can create
+// Metric instances “on the fly” using NewConstMetric, NewConstHistogram, and
+// NewConstSummary (and their respective Must… versions). That will happen in
+// the Collect method. The Describe method has to return separate Desc
+// instances, representative of the “throw-away” metrics to be created
+// later. NewDesc comes in handy to create those Desc instances.
+//
+// The Collector example illustrates the use case. You can also look at the
+// source code of the processCollector (mirroring process metrics), the
+// goCollector (mirroring Go metrics), or the expvarCollector (mirroring expvar
+// metrics) as examples that are used in this package itself.
+//
+// If you just need to call a function to get a single float value to collect as
+// a metric, GaugeFunc, CounterFunc, or UntypedFunc might be interesting
+// shortcuts.
+//
+// Advanced Uses of the Registry
+//
+// While MustRegister is the by far most common way of registering a Collector,
+// sometimes you might want to handle the errors the registration might
+// cause. As suggested by the name, MustRegister panics if an error occurs. With
+// the Register function, the error is returned and can be handled.
+//
+// An error is returned if the registered Collector is incompatible or
+// inconsistent with already registered metrics. The registry aims for
+// consistency of the collected metrics according to the Prometheus data
+// model. Inconsistencies are ideally detected at registration time, not at
+// collect time. The former will usually be detected at start-up time of a
+// program, while the latter will only happen at scrape time, possibly not even
+// on the first scrape if the inconsistency only becomes relevant later. That is
+// the main reason why a Collector and a Metric have to describe themselves to
+// the registry.
+//
+// So far, everything we did operated on the so-called default registry, as it
+// can be found in the global DefaultRegistry variable. With NewRegistry, you
+// can create a custom registry, or you can even implement the Registerer or
+// Gatherer interfaces yourself. The methods Register and Unregister work in
+// the same way on a custom registry as the global functions Register and
+// Unregister on the default registry.
+//
+// There are a number of uses for custom registries: You can use registries
+// with special properties, see NewPedanticRegistry. You can avoid global state,
+// as it is imposed by the DefaultRegistry. You can use multiple registries at
+// the same time to expose different metrics in different ways. You can use
+// separate registries for testing purposes.
+//
+// Also note that the DefaultRegistry comes registered with a Collector for Go
+// runtime metrics (via NewGoCollector) and a Collector for process metrics (via
+// NewProcessCollector). With a custom registry, you are in control and decide
+// yourself about the Collectors to register.
+//
+// HTTP Exposition
+//
+// The Registry implements the Gatherer interface. The caller of the Gather
+// method can then expose the gathered metrics in some way. Usually, the metrics
+// are served via HTTP on the /metrics endpoint. That's happening in the example
+// above. The tools to expose metrics via HTTP are in the promhttp
+// sub-package. (The top-level functions in the prometheus package are
+// deprecated.)
+//
+// Pushing to the Pushgateway
+//
+// Function for pushing to the Pushgateway can be found in the push sub-package.
+//
+// Other Means of Exposition
+//
+// More ways of exposing metrics can easily be added. Sending metrics to
+// Graphite would be an example that will soon be implemented.
+package prometheus
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/example_clustermanager_test.go b/vendor/github.com/prometheus/client_golang/prometheus/example_clustermanager_test.go
new file mode 100644
index 000000000..260c1b52d
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/example_clustermanager_test.go
@@ -0,0 +1,118 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus_test
+
+import "github.com/prometheus/client_golang/prometheus"
+
+// ClusterManager is an example for a system that might have been built without
+// Prometheus in mind. It models a central manager of jobs running in a
+// cluster. To turn it into something that collects Prometheus metrics, we
+// simply add the two methods required for the Collector interface.
+//
+// An additional challenge is that multiple instances of the ClusterManager are
+// run within the same binary, each in charge of a different zone. We need to
+// make use of ConstLabels to be able to register each ClusterManager instance
+// with Prometheus.
+type ClusterManager struct {
+	Zone         string
+	OOMCountDesc *prometheus.Desc
+	RAMUsageDesc *prometheus.Desc
+	// ... many more fields
+}
+
+// ReallyExpensiveAssessmentOfTheSystemState is a mock for the data gathering a
+// real cluster manager would have to do. Since it may actually be really
+// expensive, it must only be called once per collection. This implementation,
+// obviously, only returns some made-up data.
+func (c *ClusterManager) ReallyExpensiveAssessmentOfTheSystemState() (
+	oomCountByHost map[string]int, ramUsageByHost map[string]float64,
+) {
+	// Just example fake data.
+	oomCountByHost = map[string]int{
+		"foo.example.org": 42,
+		"bar.example.org": 2001,
+	}
+	ramUsageByHost = map[string]float64{
+		"foo.example.org": 6.023e23,
+		"bar.example.org": 3.14,
+	}
+	return
+}
+
+// Describe simply sends the two Descs in the struct to the channel.
+func (c *ClusterManager) Describe(ch chan<- *prometheus.Desc) {
+	ch <- c.OOMCountDesc
+	ch <- c.RAMUsageDesc
+}
+
+// Collect first triggers the ReallyExpensiveAssessmentOfTheSystemState. Then it
+// creates constant metrics for each host on the fly based on the returned data.
+//
+// Note that Collect could be called concurrently, so we depend on
+// ReallyExpensiveAssessmentOfTheSystemState to be concurrency-safe.
+func (c *ClusterManager) Collect(ch chan<- prometheus.Metric) {
+	oomCountByHost, ramUsageByHost := c.ReallyExpensiveAssessmentOfTheSystemState()
+	for host, oomCount := range oomCountByHost {
+		ch <- prometheus.MustNewConstMetric(
+			c.OOMCountDesc,
+			prometheus.CounterValue,
+			float64(oomCount),
+			host,
+		)
+	}
+	for host, ramUsage := range ramUsageByHost {
+		ch <- prometheus.MustNewConstMetric(
+			c.RAMUsageDesc,
+			prometheus.GaugeValue,
+			ramUsage,
+			host,
+		)
+	}
+}
+
+// NewClusterManager creates the two Descs OOMCountDesc and RAMUsageDesc. Note
+// that the zone is set as a ConstLabel. (It's different in each instance of the
+// ClusterManager, but constant over the lifetime of an instance.) Then there is
+// a variable label "host", since we want to partition the collected metrics by
+// host. Since all Descs created in this way are consistent across instances,
+// with a guaranteed distinction by the "zone" label, we can register different
+// ClusterManager instances with the same registry.
+func NewClusterManager(zone string) *ClusterManager {
+	return &ClusterManager{
+		Zone: zone,
+		OOMCountDesc: prometheus.NewDesc(
+			"clustermanager_oom_crashes_total",
+			"Number of OOM crashes.",
+			[]string{"host"},
+			prometheus.Labels{"zone": zone},
+		),
+		RAMUsageDesc: prometheus.NewDesc(
+			"clustermanager_ram_usage_bytes",
+			"RAM usage as reported to the cluster manager.",
+			[]string{"host"},
+			prometheus.Labels{"zone": zone},
+		),
+	}
+}
+
+func ExampleCollector() {
+	workerDB := NewClusterManager("db")
+	workerCA := NewClusterManager("ca")
+
+	// Since we are dealing with custom Collector implementations, it might
+	// be a good idea to try it out with a pedantic registry.
+	reg := prometheus.NewPedanticRegistry()
+	reg.MustRegister(workerDB)
+	reg.MustRegister(workerCA)
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/examples_test.go b/vendor/github.com/prometheus/client_golang/prometheus/examples_test.go
new file mode 100644
index 000000000..f87f21a8f
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/examples_test.go
@@ -0,0 +1,751 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus_test
+
+import (
+	"bytes"
+	"fmt"
+	"math"
+	"net/http"
+	"runtime"
+	"sort"
+	"strings"
+
+	dto "github.com/prometheus/client_model/go"
+	"github.com/prometheus/common/expfmt"
+
+	"github.com/golang/protobuf/proto"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+func ExampleGauge() {
+	opsQueued := prometheus.NewGauge(prometheus.GaugeOpts{
+		Namespace: "our_company",
+		Subsystem: "blob_storage",
+		Name:      "ops_queued",
+		Help:      "Number of blob storage operations waiting to be processed.",
+	})
+	prometheus.MustRegister(opsQueued)
+
+	// 10 operations queued by the goroutine managing incoming requests.
+	opsQueued.Add(10)
+	// A worker goroutine has picked up a waiting operation.
+	opsQueued.Dec()
+	// And once more...
+	opsQueued.Dec()
+}
+
+func ExampleGaugeVec() {
+	opsQueued := prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Namespace: "our_company",
+			Subsystem: "blob_storage",
+			Name:      "ops_queued",
+			Help:      "Number of blob storage operations waiting to be processed, partitioned by user and type.",
+		},
+		[]string{
+			// Which user has requested the operation?
+			"user",
+			// Of what type is the operation?
+			"type",
+		},
+	)
+	prometheus.MustRegister(opsQueued)
+
+	// Increase a value using compact (but order-sensitive!) WithLabelValues().
+	opsQueued.WithLabelValues("bob", "put").Add(4)
+	// Increase a value with a map using WithLabels. More verbose, but order
+	// doesn't matter anymore.
+	opsQueued.With(prometheus.Labels{"type": "delete", "user": "alice"}).Inc()
+}
+
+func ExampleGaugeFunc() {
+	if err := prometheus.Register(prometheus.NewGaugeFunc(
+		prometheus.GaugeOpts{
+			Subsystem: "runtime",
+			Name:      "goroutines_count",
+			Help:      "Number of goroutines that currently exist.",
+		},
+		func() float64 { return float64(runtime.NumGoroutine()) },
+	)); err == nil {
+		fmt.Println("GaugeFunc 'goroutines_count' registered.")
+	}
+	// Note that the count of goroutines is a gauge (and not a counter) as
+	// it can go up and down.
+
+	// Output:
+	// GaugeFunc 'goroutines_count' registered.
+}
+
+func ExampleCounter() {
+	pushCounter := prometheus.NewCounter(prometheus.CounterOpts{
+		Name: "repository_pushes", // Note: No help string...
+	})
+	err := prometheus.Register(pushCounter) // ... so this will return an error.
+	if err != nil {
+		fmt.Println("Push counter couldn't be registered, no counting will happen:", err)
+		return
+	}
+
+	// Try it once more, this time with a help string.
+	pushCounter = prometheus.NewCounter(prometheus.CounterOpts{
+		Name: "repository_pushes",
+		Help: "Number of pushes to external repository.",
+	})
+	err = prometheus.Register(pushCounter)
+	if err != nil {
+		fmt.Println("Push counter couldn't be registered AGAIN, no counting will happen:", err)
+		return
+	}
+
+	pushComplete := make(chan struct{})
+	// TODO: Start a goroutine that performs repository pushes and reports
+	// each completion via the channel.
+	for _ = range pushComplete {
+		pushCounter.Inc()
+	}
+	// Output:
+	// Push counter couldn't be registered, no counting will happen: descriptor Desc{fqName: "repository_pushes", help: "", constLabels: {}, variableLabels: []} is invalid: empty help string
+}
+
+func ExampleCounterVec() {
+	httpReqs := prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "http_requests_total",
+			Help: "How many HTTP requests processed, partitioned by status code and HTTP method.",
+		},
+		[]string{"code", "method"},
+	)
+	prometheus.MustRegister(httpReqs)
+
+	httpReqs.WithLabelValues("404", "POST").Add(42)
+
+	// If you have to access the same set of labels very frequently, it
+	// might be good to retrieve the metric only once and keep a handle to
+	// it. But beware of deletion of that metric, see below!
+	m := httpReqs.WithLabelValues("200", "GET")
+	for i := 0; i < 1000000; i++ {
+		m.Inc()
+	}
+	// Delete a metric from the vector. If you have previously kept a handle
+	// to that metric (as above), future updates via that handle will go
+	// unseen (even if you re-create a metric with the same label set
+	// later).
+	httpReqs.DeleteLabelValues("200", "GET")
+	// Same thing with the more verbose Labels syntax.
+	httpReqs.Delete(prometheus.Labels{"method": "GET", "code": "200"})
+}
+
+func ExampleInstrumentHandler() {
+	// Handle the "/doc" endpoint with the standard http.FileServer handler.
+	// By wrapping the handler with InstrumentHandler, request count,
+	// request and response sizes, and request latency are automatically
+	// exported to Prometheus, partitioned by HTTP status code and method
+	// and by the handler name (here "fileserver").
+	http.Handle("/doc", prometheus.InstrumentHandler(
+		"fileserver", http.FileServer(http.Dir("/usr/share/doc")),
+	))
+	// The Prometheus handler still has to be registered to handle the
+	// "/metrics" endpoint. The handler returned by prometheus.Handler() is
+	// already instrumented - with "prometheus" as the handler name. In this
+	// example, we want the handler name to be "metrics", so we instrument
+	// the uninstrumented Prometheus handler ourselves.
+	http.Handle("/metrics", prometheus.InstrumentHandler(
+		"metrics", prometheus.UninstrumentedHandler(),
+	))
+}
+
+func ExampleLabelPairSorter() {
+	labelPairs := []*dto.LabelPair{
+		&dto.LabelPair{Name: proto.String("status"), Value: proto.String("404")},
+		&dto.LabelPair{Name: proto.String("method"), Value: proto.String("get")},
+	}
+
+	sort.Sort(prometheus.LabelPairSorter(labelPairs))
+
+	fmt.Println(labelPairs)
+	// Output:
+	// [name:"method" value:"get"  name:"status" value:"404" ]
+}
+
+func ExampleRegister() {
+	// Imagine you have a worker pool and want to count the tasks completed.
+	taskCounter := prometheus.NewCounter(prometheus.CounterOpts{
+		Subsystem: "worker_pool",
+		Name:      "completed_tasks_total",
+		Help:      "Total number of tasks completed.",
+	})
+	// This will register fine.
+	if err := prometheus.Register(taskCounter); err != nil {
+		fmt.Println(err)
+	} else {
+		fmt.Println("taskCounter registered.")
+	}
+	// Don't forget to tell the HTTP server about the Prometheus handler.
+	// (In a real program, you still need to start the HTTP server...)
+	http.Handle("/metrics", prometheus.Handler())
+
+	// Now you can start workers and give every one of them a pointer to
+	// taskCounter and let it increment it whenever it completes a task.
+	taskCounter.Inc() // This has to happen somewhere in the worker code.
+
+	// But wait, you want to see how individual workers perform. So you need
+	// a vector of counters, with one element for each worker.
+	taskCounterVec := prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Subsystem: "worker_pool",
+			Name:      "completed_tasks_total",
+			Help:      "Total number of tasks completed.",
+		},
+		[]string{"worker_id"},
+	)
+
+	// Registering will fail because we already have a metric of that name.
+	if err := prometheus.Register(taskCounterVec); err != nil {
+		fmt.Println("taskCounterVec not registered:", err)
+	} else {
+		fmt.Println("taskCounterVec registered.")
+	}
+
+	// To fix, first unregister the old taskCounter.
+	if prometheus.Unregister(taskCounter) {
+		fmt.Println("taskCounter unregistered.")
+	}
+
+	// Try registering taskCounterVec again.
+	if err := prometheus.Register(taskCounterVec); err != nil {
+		fmt.Println("taskCounterVec not registered:", err)
+	} else {
+		fmt.Println("taskCounterVec registered.")
+	}
+	// Bummer! Still doesn't work.
+
+	// Prometheus will not allow you to ever export metrics with
+	// inconsistent help strings or label names. After unregistering, the
+	// unregistered metrics will cease to show up in the /metrics HTTP
+	// response, but the registry still remembers that those metrics had
+	// been exported before. For this example, we will now choose a
+	// different name. (In a real program, you would obviously not export
+	// the obsolete metric in the first place.)
+	taskCounterVec = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Subsystem: "worker_pool",
+			Name:      "completed_tasks_by_id",
+			Help:      "Total number of tasks completed.",
+		},
+		[]string{"worker_id"},
+	)
+	if err := prometheus.Register(taskCounterVec); err != nil {
+		fmt.Println("taskCounterVec not registered:", err)
+	} else {
+		fmt.Println("taskCounterVec registered.")
+	}
+	// Finally it worked!
+
+	// The workers have to tell taskCounterVec their id to increment the
+	// right element in the metric vector.
+	taskCounterVec.WithLabelValues("42").Inc() // Code from worker 42.
+
+	// Each worker could also keep a reference to their own counter element
+	// around. Pick the counter at initialization time of the worker.
+	myCounter := taskCounterVec.WithLabelValues("42") // From worker 42 initialization code.
+	myCounter.Inc()                                   // Somewhere in the code of that worker.
+
+	// Note that something like WithLabelValues("42", "spurious arg") would
+	// panic (because you have provided too many label values). If you want
+	// to get an error instead, use GetMetricWithLabelValues(...) instead.
+	notMyCounter, err := taskCounterVec.GetMetricWithLabelValues("42", "spurious arg")
+	if err != nil {
+		fmt.Println("Worker initialization failed:", err)
+	}
+	if notMyCounter == nil {
+		fmt.Println("notMyCounter is nil.")
+	}
+
+	// A different (and somewhat tricky) approach is to use
+	// ConstLabels. ConstLabels are pairs of label names and label values
+	// that never change. You might ask what those labels are good for (and
+	// rightfully so - if they never change, they could as well be part of
+	// the metric name). There are essentially two use-cases: The first is
+	// if labels are constant throughout the lifetime of a binary execution,
+	// but they vary over time or between different instances of a running
+	// binary. The second is what we have here: Each worker creates and
+	// registers an own Counter instance where the only difference is in the
+	// value of the ConstLabels. Those Counters can all be registered
+	// because the different ConstLabel values guarantee that each worker
+	// will increment a different Counter metric.
+	counterOpts := prometheus.CounterOpts{
+		Subsystem:   "worker_pool",
+		Name:        "completed_tasks",
+		Help:        "Total number of tasks completed.",
+		ConstLabels: prometheus.Labels{"worker_id": "42"},
+	}
+	taskCounterForWorker42 := prometheus.NewCounter(counterOpts)
+	if err := prometheus.Register(taskCounterForWorker42); err != nil {
+		fmt.Println("taskCounterVForWorker42 not registered:", err)
+	} else {
+		fmt.Println("taskCounterForWorker42 registered.")
+	}
+	// Obviously, in real code, taskCounterForWorker42 would be a member
+	// variable of a worker struct, and the "42" would be retrieved with a
+	// GetId() method or something. The Counter would be created and
+	// registered in the initialization code of the worker.
+
+	// For the creation of the next Counter, we can recycle
+	// counterOpts. Just change the ConstLabels.
+	counterOpts.ConstLabels = prometheus.Labels{"worker_id": "2001"}
+	taskCounterForWorker2001 := prometheus.NewCounter(counterOpts)
+	if err := prometheus.Register(taskCounterForWorker2001); err != nil {
+		fmt.Println("taskCounterVForWorker2001 not registered:", err)
+	} else {
+		fmt.Println("taskCounterForWorker2001 registered.")
+	}
+
+	taskCounterForWorker2001.Inc()
+	taskCounterForWorker42.Inc()
+	taskCounterForWorker2001.Inc()
+
+	// Yet another approach would be to turn the workers themselves into
+	// Collectors and register them. See the Collector example for details.
+
+	// Output:
+	// taskCounter registered.
+	// taskCounterVec not registered: a previously registered descriptor with the same fully-qualified name as Desc{fqName: "worker_pool_completed_tasks_total", help: "Total number of tasks completed.", constLabels: {}, variableLabels: [worker_id]} has different label names or a different help string
+	// taskCounter unregistered.
+	// taskCounterVec not registered: a previously registered descriptor with the same fully-qualified name as Desc{fqName: "worker_pool_completed_tasks_total", help: "Total number of tasks completed.", constLabels: {}, variableLabels: [worker_id]} has different label names or a different help string
+	// taskCounterVec registered.
+	// Worker initialization failed: inconsistent label cardinality
+	// notMyCounter is nil.
+	// taskCounterForWorker42 registered.
+	// taskCounterForWorker2001 registered.
+}
+
+func ExampleSummary() {
+	temps := prometheus.NewSummary(prometheus.SummaryOpts{
+		Name: "pond_temperature_celsius",
+		Help: "The temperature of the frog pond.", // Sorry, we can't measure how badly it smells.
+	})
+
+	// Simulate some observations.
+	for i := 0; i < 1000; i++ {
+		temps.Observe(30 + math.Floor(120*math.Sin(float64(i)*0.1))/10)
+	}
+
+	// Just for demonstration, let's check the state of the summary by
+	// (ab)using its Write method (which is usually only used by Prometheus
+	// internally).
+	metric := &dto.Metric{}
+	temps.Write(metric)
+	fmt.Println(proto.MarshalTextString(metric))
+
+	// Output:
+	// summary: <
+	//   sample_count: 1000
+	//   sample_sum: 29969.50000000001
+	//   quantile: <
+	//     quantile: 0.5
+	//     value: 31.1
+	//   >
+	//   quantile: <
+	//     quantile: 0.9
+	//     value: 41.3
+	//   >
+	//   quantile: <
+	//     quantile: 0.99
+	//     value: 41.9
+	//   >
+	// >
+}
+
+func ExampleSummaryVec() {
+	temps := prometheus.NewSummaryVec(
+		prometheus.SummaryOpts{
+			Name: "pond_temperature_celsius",
+			Help: "The temperature of the frog pond.", // Sorry, we can't measure how badly it smells.
+		},
+		[]string{"species"},
+	)
+
+	// Simulate some observations.
+	for i := 0; i < 1000; i++ {
+		temps.WithLabelValues("litoria-caerulea").Observe(30 + math.Floor(120*math.Sin(float64(i)*0.1))/10)
+		temps.WithLabelValues("lithobates-catesbeianus").Observe(32 + math.Floor(100*math.Cos(float64(i)*0.11))/10)
+	}
+
+	// Create a Summary without any observations.
+	temps.WithLabelValues("leiopelma-hochstetteri")
+
+	// Just for demonstration, let's check the state of the summary vector
+	// by registering it with a custom registry and then let it collect the
+	// metrics.
+	reg := prometheus.NewRegistry()
+	reg.MustRegister(temps)
+
+	metricFamilies, err := reg.Gather()
+	if err != nil || len(metricFamilies) != 1 {
+		panic("unexpected behavior of custom test registry")
+	}
+	fmt.Println(proto.MarshalTextString(metricFamilies[0]))
+
+	// Output:
+	// name: "pond_temperature_celsius"
+	// help: "The temperature of the frog pond."
+	// type: SUMMARY
+	// metric: <
+	//   label: <
+	//     name: "species"
+	//     value: "leiopelma-hochstetteri"
+	//   >
+	//   summary: <
+	//     sample_count: 0
+	//     sample_sum: 0
+	//     quantile: <
+	//       quantile: 0.5
+	//       value: nan
+	//     >
+	//     quantile: <
+	//       quantile: 0.9
+	//       value: nan
+	//     >
+	//     quantile: <
+	//       quantile: 0.99
+	//       value: nan
+	//     >
+	//   >
+	// >
+	// metric: <
+	//   label: <
+	//     name: "species"
+	//     value: "lithobates-catesbeianus"
+	//   >
+	//   summary: <
+	//     sample_count: 1000
+	//     sample_sum: 31956.100000000017
+	//     quantile: <
+	//       quantile: 0.5
+	//       value: 32.4
+	//     >
+	//     quantile: <
+	//       quantile: 0.9
+	//       value: 41.4
+	//     >
+	//     quantile: <
+	//       quantile: 0.99
+	//       value: 41.9
+	//     >
+	//   >
+	// >
+	// metric: <
+	//   label: <
+	//     name: "species"
+	//     value: "litoria-caerulea"
+	//   >
+	//   summary: <
+	//     sample_count: 1000
+	//     sample_sum: 29969.50000000001
+	//     quantile: <
+	//       quantile: 0.5
+	//       value: 31.1
+	//     >
+	//     quantile: <
+	//       quantile: 0.9
+	//       value: 41.3
+	//     >
+	//     quantile: <
+	//       quantile: 0.99
+	//       value: 41.9
+	//     >
+	//   >
+	// >
+}
+
+func ExampleNewConstSummary() {
+	desc := prometheus.NewDesc(
+		"http_request_duration_seconds",
+		"A summary of the HTTP request durations.",
+		[]string{"code", "method"},
+		prometheus.Labels{"owner": "example"},
+	)
+
+	// Create a constant summary from values we got from a 3rd party telemetry system.
+	s := prometheus.MustNewConstSummary(
+		desc,
+		4711, 403.34,
+		map[float64]float64{0.5: 42.3, 0.9: 323.3},
+		"200", "get",
+	)
+
+	// Just for demonstration, let's check the state of the summary by
+	// (ab)using its Write method (which is usually only used by Prometheus
+	// internally).
+	metric := &dto.Metric{}
+	s.Write(metric)
+	fmt.Println(proto.MarshalTextString(metric))
+
+	// Output:
+	// label: <
+	//   name: "code"
+	//   value: "200"
+	// >
+	// label: <
+	//   name: "method"
+	//   value: "get"
+	// >
+	// label: <
+	//   name: "owner"
+	//   value: "example"
+	// >
+	// summary: <
+	//   sample_count: 4711
+	//   sample_sum: 403.34
+	//   quantile: <
+	//     quantile: 0.5
+	//     value: 42.3
+	//   >
+	//   quantile: <
+	//     quantile: 0.9
+	//     value: 323.3
+	//   >
+	// >
+}
+
+func ExampleHistogram() {
+	temps := prometheus.NewHistogram(prometheus.HistogramOpts{
+		Name:    "pond_temperature_celsius",
+		Help:    "The temperature of the frog pond.", // Sorry, we can't measure how badly it smells.
+		Buckets: prometheus.LinearBuckets(20, 5, 5),  // 5 buckets, each 5 centigrade wide.
+	})
+
+	// Simulate some observations.
+	for i := 0; i < 1000; i++ {
+		temps.Observe(30 + math.Floor(120*math.Sin(float64(i)*0.1))/10)
+	}
+
+	// Just for demonstration, let's check the state of the histogram by
+	// (ab)using its Write method (which is usually only used by Prometheus
+	// internally).
+	metric := &dto.Metric{}
+	temps.Write(metric)
+	fmt.Println(proto.MarshalTextString(metric))
+
+	// Output:
+	// histogram: <
+	//   sample_count: 1000
+	//   sample_sum: 29969.50000000001
+	//   bucket: <
+	//     cumulative_count: 192
+	//     upper_bound: 20
+	//   >
+	//   bucket: <
+	//     cumulative_count: 366
+	//     upper_bound: 25
+	//   >
+	//   bucket: <
+	//     cumulative_count: 501
+	//     upper_bound: 30
+	//   >
+	//   bucket: <
+	//     cumulative_count: 638
+	//     upper_bound: 35
+	//   >
+	//   bucket: <
+	//     cumulative_count: 816
+	//     upper_bound: 40
+	//   >
+	// >
+}
+
+func ExampleNewConstHistogram() {
+	desc := prometheus.NewDesc(
+		"http_request_duration_seconds",
+		"A histogram of the HTTP request durations.",
+		[]string{"code", "method"},
+		prometheus.Labels{"owner": "example"},
+	)
+
+	// Create a constant histogram from values we got from a 3rd party telemetry system.
+	h := prometheus.MustNewConstHistogram(
+		desc,
+		4711, 403.34,
+		map[float64]uint64{25: 121, 50: 2403, 100: 3221, 200: 4233},
+		"200", "get",
+	)
+
+	// Just for demonstration, let's check the state of the histogram by
+	// (ab)using its Write method (which is usually only used by Prometheus
+	// internally).
+	metric := &dto.Metric{}
+	h.Write(metric)
+	fmt.Println(proto.MarshalTextString(metric))
+
+	// Output:
+	// label: <
+	//   name: "code"
+	//   value: "200"
+	// >
+	// label: <
+	//   name: "method"
+	//   value: "get"
+	// >
+	// label: <
+	//   name: "owner"
+	//   value: "example"
+	// >
+	// histogram: <
+	//   sample_count: 4711
+	//   sample_sum: 403.34
+	//   bucket: <
+	//     cumulative_count: 121
+	//     upper_bound: 25
+	//   >
+	//   bucket: <
+	//     cumulative_count: 2403
+	//     upper_bound: 50
+	//   >
+	//   bucket: <
+	//     cumulative_count: 3221
+	//     upper_bound: 100
+	//   >
+	//   bucket: <
+	//     cumulative_count: 4233
+	//     upper_bound: 200
+	//   >
+	// >
+}
+
+func ExampleAlreadyRegisteredError() {
+	reqCounter := prometheus.NewCounter(prometheus.CounterOpts{
+		Name: "requests_total",
+		Help: "The total number of requests served.",
+	})
+	if err := prometheus.Register(reqCounter); err != nil {
+		if are, ok := err.(prometheus.AlreadyRegisteredError); ok {
+			// A counter for that metric has been registered before.
+			// Use the old counter from now on.
+			reqCounter = are.ExistingCollector.(prometheus.Counter)
+		} else {
+			// Something else went wrong!
+			panic(err)
+		}
+	}
+}
+
+func ExampleGatherers() {
+	reg := prometheus.NewRegistry()
+	temp := prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Name: "temperature_kelvin",
+			Help: "Temperature in Kelvin.",
+		},
+		[]string{"location"},
+	)
+	reg.MustRegister(temp)
+	temp.WithLabelValues("outside").Set(273.14)
+	temp.WithLabelValues("inside").Set(298.44)
+
+	var parser expfmt.TextParser
+
+	text := `
+# TYPE humidity_percent gauge
+# HELP humidity_percent Humidity in %.
+humidity_percent{location="outside"} 45.4
+humidity_percent{location="inside"} 33.2
+# TYPE temperature_kelvin gauge
+# HELP temperature_kelvin Temperature in Kelvin.
+temperature_kelvin{location="somewhere else"} 4.5
+`
+
+	parseText := func() ([]*dto.MetricFamily, error) {
+		parsed, err := parser.TextToMetricFamilies(strings.NewReader(text))
+		if err != nil {
+			return nil, err
+		}
+		var result []*dto.MetricFamily
+		for _, mf := range parsed {
+			result = append(result, mf)
+		}
+		return result, nil
+	}
+
+	gatherers := prometheus.Gatherers{
+		reg,
+		prometheus.GathererFunc(parseText),
+	}
+
+	gathering, err := gatherers.Gather()
+	if err != nil {
+		fmt.Println(err)
+	}
+
+	out := &bytes.Buffer{}
+	for _, mf := range gathering {
+		if _, err := expfmt.MetricFamilyToText(out, mf); err != nil {
+			panic(err)
+		}
+	}
+	fmt.Print(out.String())
+	fmt.Println("----------")
+
+	// Note how the temperature_kelvin metric family has been merged from
+	// different sources. Now try
+	text = `
+# TYPE humidity_percent gauge
+# HELP humidity_percent Humidity in %.
+humidity_percent{location="outside"} 45.4
+humidity_percent{location="inside"} 33.2
+# TYPE temperature_kelvin gauge
+# HELP temperature_kelvin Temperature in Kelvin.
+# Duplicate metric:
+temperature_kelvin{location="outside"} 265.3
+ # Wrong labels:
+temperature_kelvin 4.5
+`
+
+	gathering, err = gatherers.Gather()
+	if err != nil {
+		fmt.Println(err)
+	}
+	// Note that still as many metrics as possible are returned:
+	out.Reset()
+	for _, mf := range gathering {
+		if _, err := expfmt.MetricFamilyToText(out, mf); err != nil {
+			panic(err)
+		}
+	}
+	fmt.Print(out.String())
+
+	// Output:
+	// # HELP humidity_percent Humidity in %.
+	// # TYPE humidity_percent gauge
+	// humidity_percent{location="inside"} 33.2
+	// humidity_percent{location="outside"} 45.4
+	// # HELP temperature_kelvin Temperature in Kelvin.
+	// # TYPE temperature_kelvin gauge
+	// temperature_kelvin{location="inside"} 298.44
+	// temperature_kelvin{location="outside"} 273.14
+	// temperature_kelvin{location="somewhere else"} 4.5
+	// ----------
+	// 2 error(s) occurred:
+	// * collected metric temperature_kelvin label:<name:"location" value:"outside" > gauge:<value:265.3 >  was collected before with the same name and label values
+	// * collected metric temperature_kelvin gauge:<value:4.5 >  has label dimensions inconsistent with previously collected metrics in the same metric family
+	// # HELP humidity_percent Humidity in %.
+	// # TYPE humidity_percent gauge
+	// humidity_percent{location="inside"} 33.2
+	// humidity_percent{location="outside"} 45.4
+	// # HELP temperature_kelvin Temperature in Kelvin.
+	// # TYPE temperature_kelvin gauge
+	// temperature_kelvin{location="inside"} 298.44
+	// temperature_kelvin{location="outside"} 273.14
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/expvar_collector.go b/vendor/github.com/prometheus/client_golang/prometheus/expvar_collector.go
new file mode 100644
index 000000000..18a99d5fa
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/expvar_collector.go
@@ -0,0 +1,119 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"encoding/json"
+	"expvar"
+)
+
+type expvarCollector struct {
+	exports map[string]*Desc
+}
+
+// NewExpvarCollector returns a newly allocated expvar Collector that still has
+// to be registered with a Prometheus registry.
+//
+// An expvar Collector collects metrics from the expvar interface. It provides a
+// quick way to expose numeric values that are already exported via expvar as
+// Prometheus metrics. Note that the data models of expvar and Prometheus are
+// fundamentally different, and that the expvar Collector is inherently slower
+// than native Prometheus metrics. Thus, the expvar Collector is probably great
+// for experiments and prototying, but you should seriously consider a more
+// direct implementation of Prometheus metrics for monitoring production
+// systems.
+//
+// The exports map has the following meaning:
+//
+// The keys in the map correspond to expvar keys, i.e. for every expvar key you
+// want to export as Prometheus metric, you need an entry in the exports
+// map. The descriptor mapped to each key describes how to export the expvar
+// value. It defines the name and the help string of the Prometheus metric
+// proxying the expvar value. The type will always be Untyped.
+//
+// For descriptors without variable labels, the expvar value must be a number or
+// a bool. The number is then directly exported as the Prometheus sample
+// value. (For a bool, 'false' translates to 0 and 'true' to 1). Expvar values
+// that are not numbers or bools are silently ignored.
+//
+// If the descriptor has one variable label, the expvar value must be an expvar
+// map. The keys in the expvar map become the various values of the one
+// Prometheus label. The values in the expvar map must be numbers or bools again
+// as above.
+//
+// For descriptors with more than one variable label, the expvar must be a
+// nested expvar map, i.e. where the values of the topmost map are maps again
+// etc. until a depth is reached that corresponds to the number of labels. The
+// leaves of that structure must be numbers or bools as above to serve as the
+// sample values.
+//
+// Anything that does not fit into the scheme above is silently ignored.
+func NewExpvarCollector(exports map[string]*Desc) Collector {
+	return &expvarCollector{
+		exports: exports,
+	}
+}
+
+// Describe implements Collector.
+func (e *expvarCollector) Describe(ch chan<- *Desc) {
+	for _, desc := range e.exports {
+		ch <- desc
+	}
+}
+
+// Collect implements Collector.
+func (e *expvarCollector) Collect(ch chan<- Metric) {
+	for name, desc := range e.exports {
+		var m Metric
+		expVar := expvar.Get(name)
+		if expVar == nil {
+			continue
+		}
+		var v interface{}
+		labels := make([]string, len(desc.variableLabels))
+		if err := json.Unmarshal([]byte(expVar.String()), &v); err != nil {
+			ch <- NewInvalidMetric(desc, err)
+			continue
+		}
+		var processValue func(v interface{}, i int)
+		processValue = func(v interface{}, i int) {
+			if i >= len(labels) {
+				copiedLabels := append(make([]string, 0, len(labels)), labels...)
+				switch v := v.(type) {
+				case float64:
+					m = MustNewConstMetric(desc, UntypedValue, v, copiedLabels...)
+				case bool:
+					if v {
+						m = MustNewConstMetric(desc, UntypedValue, 1, copiedLabels...)
+					} else {
+						m = MustNewConstMetric(desc, UntypedValue, 0, copiedLabels...)
+					}
+				default:
+					return
+				}
+				ch <- m
+				return
+			}
+			vm, ok := v.(map[string]interface{})
+			if !ok {
+				return
+			}
+			for lv, val := range vm {
+				labels[i] = lv
+				processValue(val, i+1)
+			}
+		}
+		processValue(v, 0)
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/expvar_collector_test.go b/vendor/github.com/prometheus/client_golang/prometheus/expvar_collector_test.go
new file mode 100644
index 000000000..5d3128fae
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/expvar_collector_test.go
@@ -0,0 +1,97 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus_test
+
+import (
+	"expvar"
+	"fmt"
+	"sort"
+	"strings"
+
+	dto "github.com/prometheus/client_model/go"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+func ExampleExpvarCollector() {
+	expvarCollector := prometheus.NewExpvarCollector(map[string]*prometheus.Desc{
+		"memstats": prometheus.NewDesc(
+			"expvar_memstats",
+			"All numeric memstats as one metric family. Not a good role-model, actually... ;-)",
+			[]string{"type"}, nil,
+		),
+		"lone-int": prometheus.NewDesc(
+			"expvar_lone_int",
+			"Just an expvar int as an example.",
+			nil, nil,
+		),
+		"http-request-map": prometheus.NewDesc(
+			"expvar_http_request_total",
+			"How many http requests processed, partitioned by status code and http method.",
+			[]string{"code", "method"}, nil,
+		),
+	})
+	prometheus.MustRegister(expvarCollector)
+
+	// The Prometheus part is done here. But to show that this example is
+	// doing anything, we have to manually export something via expvar.  In
+	// real-life use-cases, some library would already have exported via
+	// expvar what we want to re-export as Prometheus metrics.
+	expvar.NewInt("lone-int").Set(42)
+	expvarMap := expvar.NewMap("http-request-map")
+	var (
+		expvarMap1, expvarMap2                             expvar.Map
+		expvarInt11, expvarInt12, expvarInt21, expvarInt22 expvar.Int
+	)
+	expvarMap1.Init()
+	expvarMap2.Init()
+	expvarInt11.Set(3)
+	expvarInt12.Set(13)
+	expvarInt21.Set(11)
+	expvarInt22.Set(212)
+	expvarMap1.Set("POST", &expvarInt11)
+	expvarMap1.Set("GET", &expvarInt12)
+	expvarMap2.Set("POST", &expvarInt21)
+	expvarMap2.Set("GET", &expvarInt22)
+	expvarMap.Set("404", &expvarMap1)
+	expvarMap.Set("200", &expvarMap2)
+	// Results in the following expvar map:
+	// "http-request-count": {"200": {"POST": 11, "GET": 212}, "404": {"POST": 3, "GET": 13}}
+
+	// Let's see what the scrape would yield, but exclude the memstats metrics.
+	metricStrings := []string{}
+	metric := dto.Metric{}
+	metricChan := make(chan prometheus.Metric)
+	go func() {
+		expvarCollector.Collect(metricChan)
+		close(metricChan)
+	}()
+	for m := range metricChan {
+		if strings.Index(m.Desc().String(), "expvar_memstats") == -1 {
+			metric.Reset()
+			m.Write(&metric)
+			metricStrings = append(metricStrings, metric.String())
+		}
+	}
+	sort.Strings(metricStrings)
+	for _, s := range metricStrings {
+		fmt.Println(strings.TrimRight(s, " "))
+	}
+	// Output:
+	// label:<name:"code" value:"200" > label:<name:"method" value:"GET" > untyped:<value:212 >
+	// label:<name:"code" value:"200" > label:<name:"method" value:"POST" > untyped:<value:11 >
+	// label:<name:"code" value:"404" > label:<name:"method" value:"GET" > untyped:<value:13 >
+	// label:<name:"code" value:"404" > label:<name:"method" value:"POST" > untyped:<value:3 >
+	// untyped:<value:42 >
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/fnv.go b/vendor/github.com/prometheus/client_golang/prometheus/fnv.go
new file mode 100644
index 000000000..e3b67df8a
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/fnv.go
@@ -0,0 +1,29 @@
+package prometheus
+
+// Inline and byte-free variant of hash/fnv's fnv64a.
+
+const (
+	offset64 = 14695981039346656037
+	prime64  = 1099511628211
+)
+
+// hashNew initializies a new fnv64a hash value.
+func hashNew() uint64 {
+	return offset64
+}
+
+// hashAdd adds a string to a fnv64a hash value, returning the updated hash.
+func hashAdd(h uint64, s string) uint64 {
+	for i := 0; i < len(s); i++ {
+		h ^= uint64(s[i])
+		h *= prime64
+	}
+	return h
+}
+
+// hashAddByte adds a byte to a fnv64a hash value, returning the updated hash.
+func hashAddByte(h uint64, b byte) uint64 {
+	h ^= uint64(b)
+	h *= prime64
+	return h
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/gauge.go b/vendor/github.com/prometheus/client_golang/prometheus/gauge.go
new file mode 100644
index 000000000..8b70e5141
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/gauge.go
@@ -0,0 +1,140 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+// Gauge is a Metric that represents a single numerical value that can
+// arbitrarily go up and down.
+//
+// A Gauge is typically used for measured values like temperatures or current
+// memory usage, but also "counts" that can go up and down, like the number of
+// running goroutines.
+//
+// To create Gauge instances, use NewGauge.
+type Gauge interface {
+	Metric
+	Collector
+
+	// Set sets the Gauge to an arbitrary value.
+	Set(float64)
+	// Inc increments the Gauge by 1.
+	Inc()
+	// Dec decrements the Gauge by 1.
+	Dec()
+	// Add adds the given value to the Gauge. (The value can be
+	// negative, resulting in a decrease of the Gauge.)
+	Add(float64)
+	// Sub subtracts the given value from the Gauge. (The value can be
+	// negative, resulting in an increase of the Gauge.)
+	Sub(float64)
+}
+
+// GaugeOpts is an alias for Opts. See there for doc comments.
+type GaugeOpts Opts
+
+// NewGauge creates a new Gauge based on the provided GaugeOpts.
+func NewGauge(opts GaugeOpts) Gauge {
+	return newValue(NewDesc(
+		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		opts.Help,
+		nil,
+		opts.ConstLabels,
+	), GaugeValue, 0)
+}
+
+// GaugeVec is a Collector that bundles a set of Gauges that all share the same
+// Desc, but have different values for their variable labels. This is used if
+// you want to count the same thing partitioned by various dimensions
+// (e.g. number of operations queued, partitioned by user and operation
+// type). Create instances with NewGaugeVec.
+type GaugeVec struct {
+	*MetricVec
+}
+
+// NewGaugeVec creates a new GaugeVec based on the provided GaugeOpts and
+// partitioned by the given label names. At least one label name must be
+// provided.
+func NewGaugeVec(opts GaugeOpts, labelNames []string) *GaugeVec {
+	desc := NewDesc(
+		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		opts.Help,
+		labelNames,
+		opts.ConstLabels,
+	)
+	return &GaugeVec{
+		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
+			return newValue(desc, GaugeValue, 0, lvs...)
+		}),
+	}
+}
+
+// GetMetricWithLabelValues replaces the method of the same name in
+// MetricVec. The difference is that this method returns a Gauge and not a
+// Metric so that no type conversion is required.
+func (m *GaugeVec) GetMetricWithLabelValues(lvs ...string) (Gauge, error) {
+	metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...)
+	if metric != nil {
+		return metric.(Gauge), err
+	}
+	return nil, err
+}
+
+// GetMetricWith replaces the method of the same name in MetricVec. The
+// difference is that this method returns a Gauge and not a Metric so that no
+// type conversion is required.
+func (m *GaugeVec) GetMetricWith(labels Labels) (Gauge, error) {
+	metric, err := m.MetricVec.GetMetricWith(labels)
+	if metric != nil {
+		return metric.(Gauge), err
+	}
+	return nil, err
+}
+
+// WithLabelValues works as GetMetricWithLabelValues, but panics where
+// GetMetricWithLabelValues would have returned an error. By not returning an
+// error, WithLabelValues allows shortcuts like
+//     myVec.WithLabelValues("404", "GET").Add(42)
+func (m *GaugeVec) WithLabelValues(lvs ...string) Gauge {
+	return m.MetricVec.WithLabelValues(lvs...).(Gauge)
+}
+
+// With works as GetMetricWith, but panics where GetMetricWithLabels would have
+// returned an error. By not returning an error, With allows shortcuts like
+//     myVec.With(Labels{"code": "404", "method": "GET"}).Add(42)
+func (m *GaugeVec) With(labels Labels) Gauge {
+	return m.MetricVec.With(labels).(Gauge)
+}
+
+// GaugeFunc is a Gauge whose value is determined at collect time by calling a
+// provided function.
+//
+// To create GaugeFunc instances, use NewGaugeFunc.
+type GaugeFunc interface {
+	Metric
+	Collector
+}
+
+// NewGaugeFunc creates a new GaugeFunc based on the provided GaugeOpts. The
+// value reported is determined by calling the given function from within the
+// Write method. Take into account that metric collection may happen
+// concurrently. If that results in concurrent calls to Write, like in the case
+// where a GaugeFunc is directly registered with Prometheus, the provided
+// function must be concurrency-safe.
+func NewGaugeFunc(opts GaugeOpts, function func() float64) GaugeFunc {
+	return newValueFunc(NewDesc(
+		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		opts.Help,
+		nil,
+		opts.ConstLabels,
+	), GaugeValue, function)
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/gauge_test.go b/vendor/github.com/prometheus/client_golang/prometheus/gauge_test.go
new file mode 100644
index 000000000..48cab4636
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/gauge_test.go
@@ -0,0 +1,182 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"math"
+	"math/rand"
+	"sync"
+	"testing"
+	"testing/quick"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+func listenGaugeStream(vals, result chan float64, done chan struct{}) {
+	var sum float64
+outer:
+	for {
+		select {
+		case <-done:
+			close(vals)
+			for v := range vals {
+				sum += v
+			}
+			break outer
+		case v := <-vals:
+			sum += v
+		}
+	}
+	result <- sum
+	close(result)
+}
+
+func TestGaugeConcurrency(t *testing.T) {
+	it := func(n uint32) bool {
+		mutations := int(n % 10000)
+		concLevel := int(n%15 + 1)
+
+		var start, end sync.WaitGroup
+		start.Add(1)
+		end.Add(concLevel)
+
+		sStream := make(chan float64, mutations*concLevel)
+		result := make(chan float64)
+		done := make(chan struct{})
+
+		go listenGaugeStream(sStream, result, done)
+		go func() {
+			end.Wait()
+			close(done)
+		}()
+
+		gge := NewGauge(GaugeOpts{
+			Name: "test_gauge",
+			Help: "no help can be found here",
+		})
+		for i := 0; i < concLevel; i++ {
+			vals := make([]float64, mutations)
+			for j := 0; j < mutations; j++ {
+				vals[j] = rand.Float64() - 0.5
+			}
+
+			go func(vals []float64) {
+				start.Wait()
+				for _, v := range vals {
+					sStream <- v
+					gge.Add(v)
+				}
+				end.Done()
+			}(vals)
+		}
+		start.Done()
+
+		if expected, got := <-result, math.Float64frombits(gge.(*value).valBits); math.Abs(expected-got) > 0.000001 {
+			t.Fatalf("expected approx. %f, got %f", expected, got)
+			return false
+		}
+		return true
+	}
+
+	if err := quick.Check(it, nil); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestGaugeVecConcurrency(t *testing.T) {
+	it := func(n uint32) bool {
+		mutations := int(n % 10000)
+		concLevel := int(n%15 + 1)
+		vecLength := int(n%5 + 1)
+
+		var start, end sync.WaitGroup
+		start.Add(1)
+		end.Add(concLevel)
+
+		sStreams := make([]chan float64, vecLength)
+		results := make([]chan float64, vecLength)
+		done := make(chan struct{})
+
+		for i := 0; i < vecLength; i++ {
+			sStreams[i] = make(chan float64, mutations*concLevel)
+			results[i] = make(chan float64)
+			go listenGaugeStream(sStreams[i], results[i], done)
+		}
+
+		go func() {
+			end.Wait()
+			close(done)
+		}()
+
+		gge := NewGaugeVec(
+			GaugeOpts{
+				Name: "test_gauge",
+				Help: "no help can be found here",
+			},
+			[]string{"label"},
+		)
+		for i := 0; i < concLevel; i++ {
+			vals := make([]float64, mutations)
+			pick := make([]int, mutations)
+			for j := 0; j < mutations; j++ {
+				vals[j] = rand.Float64() - 0.5
+				pick[j] = rand.Intn(vecLength)
+			}
+
+			go func(vals []float64) {
+				start.Wait()
+				for i, v := range vals {
+					sStreams[pick[i]] <- v
+					gge.WithLabelValues(string('A' + pick[i])).Add(v)
+				}
+				end.Done()
+			}(vals)
+		}
+		start.Done()
+
+		for i := range sStreams {
+			if expected, got := <-results[i], math.Float64frombits(gge.WithLabelValues(string('A'+i)).(*value).valBits); math.Abs(expected-got) > 0.000001 {
+				t.Fatalf("expected approx. %f, got %f", expected, got)
+				return false
+			}
+		}
+		return true
+	}
+
+	if err := quick.Check(it, nil); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestGaugeFunc(t *testing.T) {
+	gf := NewGaugeFunc(
+		GaugeOpts{
+			Name:        "test_name",
+			Help:        "test help",
+			ConstLabels: Labels{"a": "1", "b": "2"},
+		},
+		func() float64 { return 3.1415 },
+	)
+
+	if expected, got := `Desc{fqName: "test_name", help: "test help", constLabels: {a="1",b="2"}, variableLabels: []}`, gf.Desc().String(); expected != got {
+		t.Errorf("expected %q, got %q", expected, got)
+	}
+
+	m := &dto.Metric{}
+	gf.Write(m)
+
+	if expected, got := `label:<name:"a" value:"1" > label:<name:"b" value:"2" > gauge:<value:3.1415 > `, m.String(); expected != got {
+		t.Errorf("expected %q, got %q", expected, got)
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go b/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go
new file mode 100644
index 000000000..abc9d4ec4
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go
@@ -0,0 +1,263 @@
+package prometheus
+
+import (
+	"fmt"
+	"runtime"
+	"runtime/debug"
+	"time"
+)
+
+type goCollector struct {
+	goroutines Gauge
+	gcDesc     *Desc
+
+	// metrics to describe and collect
+	metrics memStatsMetrics
+}
+
+// NewGoCollector returns a collector which exports metrics about the current
+// go process.
+func NewGoCollector() Collector {
+	return &goCollector{
+		goroutines: NewGauge(GaugeOpts{
+			Namespace: "go",
+			Name:      "goroutines",
+			Help:      "Number of goroutines that currently exist.",
+		}),
+		gcDesc: NewDesc(
+			"go_gc_duration_seconds",
+			"A summary of the GC invocation durations.",
+			nil, nil),
+		metrics: memStatsMetrics{
+			{
+				desc: NewDesc(
+					memstatNamespace("alloc_bytes"),
+					"Number of bytes allocated and still in use.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.Alloc) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("alloc_bytes_total"),
+					"Total number of bytes allocated, even if freed.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.TotalAlloc) },
+				valType: CounterValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("sys_bytes"),
+					"Number of bytes obtained by system. Sum of all system allocations.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.Sys) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("lookups_total"),
+					"Total number of pointer lookups.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.Lookups) },
+				valType: CounterValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("mallocs_total"),
+					"Total number of mallocs.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.Mallocs) },
+				valType: CounterValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("frees_total"),
+					"Total number of frees.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.Frees) },
+				valType: CounterValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("heap_alloc_bytes"),
+					"Number of heap bytes allocated and still in use.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.HeapAlloc) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("heap_sys_bytes"),
+					"Number of heap bytes obtained from system.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.HeapSys) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("heap_idle_bytes"),
+					"Number of heap bytes waiting to be used.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.HeapIdle) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("heap_inuse_bytes"),
+					"Number of heap bytes that are in use.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.HeapInuse) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("heap_released_bytes_total"),
+					"Total number of heap bytes released to OS.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.HeapReleased) },
+				valType: CounterValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("heap_objects"),
+					"Number of allocated objects.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.HeapObjects) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("stack_inuse_bytes"),
+					"Number of bytes in use by the stack allocator.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.StackInuse) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("stack_sys_bytes"),
+					"Number of bytes obtained from system for stack allocator.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.StackSys) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("mspan_inuse_bytes"),
+					"Number of bytes in use by mspan structures.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.MSpanInuse) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("mspan_sys_bytes"),
+					"Number of bytes used for mspan structures obtained from system.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.MSpanSys) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("mcache_inuse_bytes"),
+					"Number of bytes in use by mcache structures.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.MCacheInuse) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("mcache_sys_bytes"),
+					"Number of bytes used for mcache structures obtained from system.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.MCacheSys) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("buck_hash_sys_bytes"),
+					"Number of bytes used by the profiling bucket hash table.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.BuckHashSys) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("gc_sys_bytes"),
+					"Number of bytes used for garbage collection system metadata.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.GCSys) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("other_sys_bytes"),
+					"Number of bytes used for other system allocations.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.OtherSys) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("next_gc_bytes"),
+					"Number of heap bytes when next garbage collection will take place.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.NextGC) },
+				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("last_gc_time_seconds"),
+					"Number of seconds since 1970 of last garbage collection.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.LastGC) / 1e9 },
+				valType: GaugeValue,
+			},
+		},
+	}
+}
+
+func memstatNamespace(s string) string {
+	return fmt.Sprintf("go_memstats_%s", s)
+}
+
+// Describe returns all descriptions of the collector.
+func (c *goCollector) Describe(ch chan<- *Desc) {
+	ch <- c.goroutines.Desc()
+	ch <- c.gcDesc
+
+	for _, i := range c.metrics {
+		ch <- i.desc
+	}
+}
+
+// Collect returns the current state of all metrics of the collector.
+func (c *goCollector) Collect(ch chan<- Metric) {
+	c.goroutines.Set(float64(runtime.NumGoroutine()))
+	ch <- c.goroutines
+
+	var stats debug.GCStats
+	stats.PauseQuantiles = make([]time.Duration, 5)
+	debug.ReadGCStats(&stats)
+
+	quantiles := make(map[float64]float64)
+	for idx, pq := range stats.PauseQuantiles[1:] {
+		quantiles[float64(idx+1)/float64(len(stats.PauseQuantiles)-1)] = pq.Seconds()
+	}
+	quantiles[0.0] = stats.PauseQuantiles[0].Seconds()
+	ch <- MustNewConstSummary(c.gcDesc, uint64(stats.NumGC), float64(stats.PauseTotal.Seconds()), quantiles)
+
+	ms := &runtime.MemStats{}
+	runtime.ReadMemStats(ms)
+	for _, i := range c.metrics {
+		ch <- MustNewConstMetric(i.desc, i.valType, i.eval(ms))
+	}
+}
+
+// memStatsMetrics provide description, value, and value type for memstat metrics.
+type memStatsMetrics []struct {
+	desc    *Desc
+	eval    func(*runtime.MemStats) float64
+	valType ValueType
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/go_collector_test.go b/vendor/github.com/prometheus/client_golang/prometheus/go_collector_test.go
new file mode 100644
index 000000000..9a8858cbd
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/go_collector_test.go
@@ -0,0 +1,123 @@
+package prometheus
+
+import (
+	"runtime"
+	"testing"
+	"time"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+func TestGoCollector(t *testing.T) {
+	var (
+		c      = NewGoCollector()
+		ch     = make(chan Metric)
+		waitc  = make(chan struct{})
+		closec = make(chan struct{})
+		old    = -1
+	)
+	defer close(closec)
+
+	go func() {
+		c.Collect(ch)
+		go func(c <-chan struct{}) {
+			<-c
+		}(closec)
+		<-waitc
+		c.Collect(ch)
+	}()
+
+	for {
+		select {
+		case metric := <-ch:
+			switch m := metric.(type) {
+			// Attention, this also catches Counter...
+			case Gauge:
+				pb := &dto.Metric{}
+				m.Write(pb)
+				if pb.GetGauge() == nil {
+					continue
+				}
+
+				if old == -1 {
+					old = int(pb.GetGauge().GetValue())
+					close(waitc)
+					continue
+				}
+
+				if diff := int(pb.GetGauge().GetValue()) - old; diff != 1 {
+					// TODO: This is flaky in highly concurrent situations.
+					t.Errorf("want 1 new goroutine, got %d", diff)
+				}
+
+				// GoCollector performs two sends per call.
+				// On line 27 we need to receive the second send
+				// to shut down cleanly.
+				<-ch
+				return
+			}
+		case <-time.After(1 * time.Second):
+			t.Fatalf("expected collect timed out")
+		}
+	}
+}
+
+func TestGCCollector(t *testing.T) {
+	var (
+		c        = NewGoCollector()
+		ch       = make(chan Metric)
+		waitc    = make(chan struct{})
+		closec   = make(chan struct{})
+		oldGC    uint64
+		oldPause float64
+	)
+	defer close(closec)
+
+	go func() {
+		c.Collect(ch)
+		// force GC
+		runtime.GC()
+		<-waitc
+		c.Collect(ch)
+	}()
+
+	first := true
+	for {
+		select {
+		case metric := <-ch:
+			switch m := metric.(type) {
+			case *constSummary, *value:
+				pb := &dto.Metric{}
+				m.Write(pb)
+				if pb.GetSummary() == nil {
+					continue
+				}
+
+				if len(pb.GetSummary().Quantile) != 5 {
+					t.Errorf("expected 4 buckets, got %d", len(pb.GetSummary().Quantile))
+				}
+				for idx, want := range []float64{0.0, 0.25, 0.5, 0.75, 1.0} {
+					if *pb.GetSummary().Quantile[idx].Quantile != want {
+						t.Errorf("bucket #%d is off, got %f, want %f", idx, *pb.GetSummary().Quantile[idx].Quantile, want)
+					}
+				}
+				if first {
+					first = false
+					oldGC = *pb.GetSummary().SampleCount
+					oldPause = *pb.GetSummary().SampleSum
+					close(waitc)
+					continue
+				}
+				if diff := *pb.GetSummary().SampleCount - oldGC; diff != 1 {
+					t.Errorf("want 1 new garbage collection run, got %d", diff)
+				}
+				if diff := *pb.GetSummary().SampleSum - oldPause; diff <= 0 {
+					t.Errorf("want moar pause, got %f", diff)
+				}
+				return
+			}
+		case <-time.After(1 * time.Second):
+			t.Fatalf("expected collect timed out")
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/histogram.go b/vendor/github.com/prometheus/client_golang/prometheus/histogram.go
new file mode 100644
index 000000000..9719e8fac
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/histogram.go
@@ -0,0 +1,444 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"fmt"
+	"math"
+	"sort"
+	"sync/atomic"
+
+	"github.com/golang/protobuf/proto"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+// A Histogram counts individual observations from an event or sample stream in
+// configurable buckets. Similar to a summary, it also provides a sum of
+// observations and an observation count.
+//
+// On the Prometheus server, quantiles can be calculated from a Histogram using
+// the histogram_quantile function in the query language.
+//
+// Note that Histograms, in contrast to Summaries, can be aggregated with the
+// Prometheus query language (see the documentation for detailed
+// procedures). However, Histograms require the user to pre-define suitable
+// buckets, and they are in general less accurate. The Observe method of a
+// Histogram has a very low performance overhead in comparison with the Observe
+// method of a Summary.
+//
+// To create Histogram instances, use NewHistogram.
+type Histogram interface {
+	Metric
+	Collector
+
+	// Observe adds a single observation to the histogram.
+	Observe(float64)
+}
+
+// bucketLabel is used for the label that defines the upper bound of a
+// bucket of a histogram ("le" -> "less or equal").
+const bucketLabel = "le"
+
+// DefBuckets are the default Histogram buckets. The default buckets are
+// tailored to broadly measure the response time (in seconds) of a network
+// service. Most likely, however, you will be required to define buckets
+// customized to your use case.
+var (
+	DefBuckets = []float64{.005, .01, .025, .05, .1, .25, .5, 1, 2.5, 5, 10}
+
+	errBucketLabelNotAllowed = fmt.Errorf(
+		"%q is not allowed as label name in histograms", bucketLabel,
+	)
+)
+
+// LinearBuckets creates 'count' buckets, each 'width' wide, where the lowest
+// bucket has an upper bound of 'start'. The final +Inf bucket is not counted
+// and not included in the returned slice. The returned slice is meant to be
+// used for the Buckets field of HistogramOpts.
+//
+// The function panics if 'count' is zero or negative.
+func LinearBuckets(start, width float64, count int) []float64 {
+	if count < 1 {
+		panic("LinearBuckets needs a positive count")
+	}
+	buckets := make([]float64, count)
+	for i := range buckets {
+		buckets[i] = start
+		start += width
+	}
+	return buckets
+}
+
+// ExponentialBuckets creates 'count' buckets, where the lowest bucket has an
+// upper bound of 'start' and each following bucket's upper bound is 'factor'
+// times the previous bucket's upper bound. The final +Inf bucket is not counted
+// and not included in the returned slice. The returned slice is meant to be
+// used for the Buckets field of HistogramOpts.
+//
+// The function panics if 'count' is 0 or negative, if 'start' is 0 or negative,
+// or if 'factor' is less than or equal 1.
+func ExponentialBuckets(start, factor float64, count int) []float64 {
+	if count < 1 {
+		panic("ExponentialBuckets needs a positive count")
+	}
+	if start <= 0 {
+		panic("ExponentialBuckets needs a positive start value")
+	}
+	if factor <= 1 {
+		panic("ExponentialBuckets needs a factor greater than 1")
+	}
+	buckets := make([]float64, count)
+	for i := range buckets {
+		buckets[i] = start
+		start *= factor
+	}
+	return buckets
+}
+
+// HistogramOpts bundles the options for creating a Histogram metric. It is
+// mandatory to set Name and Help to a non-empty string. All other fields are
+// optional and can safely be left at their zero value.
+type HistogramOpts struct {
+	// Namespace, Subsystem, and Name are components of the fully-qualified
+	// name of the Histogram (created by joining these components with
+	// "_"). Only Name is mandatory, the others merely help structuring the
+	// name. Note that the fully-qualified name of the Histogram must be a
+	// valid Prometheus metric name.
+	Namespace string
+	Subsystem string
+	Name      string
+
+	// Help provides information about this Histogram. Mandatory!
+	//
+	// Metrics with the same fully-qualified name must have the same Help
+	// string.
+	Help string
+
+	// ConstLabels are used to attach fixed labels to this
+	// Histogram. Histograms with the same fully-qualified name must have the
+	// same label names in their ConstLabels.
+	//
+	// Note that in most cases, labels have a value that varies during the
+	// lifetime of a process. Those labels are usually managed with a
+	// HistogramVec. ConstLabels serve only special purposes. One is for the
+	// special case where the value of a label does not change during the
+	// lifetime of a process, e.g. if the revision of the running binary is
+	// put into a label. Another, more advanced purpose is if more than one
+	// Collector needs to collect Histograms with the same fully-qualified
+	// name. In that case, those Summaries must differ in the values of
+	// their ConstLabels. See the Collector examples.
+	//
+	// If the value of a label never changes (not even between binaries),
+	// that label most likely should not be a label at all (but part of the
+	// metric name).
+	ConstLabels Labels
+
+	// Buckets defines the buckets into which observations are counted. Each
+	// element in the slice is the upper inclusive bound of a bucket. The
+	// values must be sorted in strictly increasing order. There is no need
+	// to add a highest bucket with +Inf bound, it will be added
+	// implicitly. The default value is DefBuckets.
+	Buckets []float64
+}
+
+// NewHistogram creates a new Histogram based on the provided HistogramOpts. It
+// panics if the buckets in HistogramOpts are not in strictly increasing order.
+func NewHistogram(opts HistogramOpts) Histogram {
+	return newHistogram(
+		NewDesc(
+			BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+			opts.Help,
+			nil,
+			opts.ConstLabels,
+		),
+		opts,
+	)
+}
+
+func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogram {
+	if len(desc.variableLabels) != len(labelValues) {
+		panic(errInconsistentCardinality)
+	}
+
+	for _, n := range desc.variableLabels {
+		if n == bucketLabel {
+			panic(errBucketLabelNotAllowed)
+		}
+	}
+	for _, lp := range desc.constLabelPairs {
+		if lp.GetName() == bucketLabel {
+			panic(errBucketLabelNotAllowed)
+		}
+	}
+
+	if len(opts.Buckets) == 0 {
+		opts.Buckets = DefBuckets
+	}
+
+	h := &histogram{
+		desc:        desc,
+		upperBounds: opts.Buckets,
+		labelPairs:  makeLabelPairs(desc, labelValues),
+	}
+	for i, upperBound := range h.upperBounds {
+		if i < len(h.upperBounds)-1 {
+			if upperBound >= h.upperBounds[i+1] {
+				panic(fmt.Errorf(
+					"histogram buckets must be in increasing order: %f >= %f",
+					upperBound, h.upperBounds[i+1],
+				))
+			}
+		} else {
+			if math.IsInf(upperBound, +1) {
+				// The +Inf bucket is implicit. Remove it here.
+				h.upperBounds = h.upperBounds[:i]
+			}
+		}
+	}
+	// Finally we know the final length of h.upperBounds and can make counts.
+	h.counts = make([]uint64, len(h.upperBounds))
+
+	h.init(h) // Init self-collection.
+	return h
+}
+
+type histogram struct {
+	// sumBits contains the bits of the float64 representing the sum of all
+	// observations. sumBits and count have to go first in the struct to
+	// guarantee alignment for atomic operations.
+	// http://golang.org/pkg/sync/atomic/#pkg-note-BUG
+	sumBits uint64
+	count   uint64
+
+	selfCollector
+	// Note that there is no mutex required.
+
+	desc *Desc
+
+	upperBounds []float64
+	counts      []uint64
+
+	labelPairs []*dto.LabelPair
+}
+
+func (h *histogram) Desc() *Desc {
+	return h.desc
+}
+
+func (h *histogram) Observe(v float64) {
+	// TODO(beorn7): For small numbers of buckets (<30), a linear search is
+	// slightly faster than the binary search. If we really care, we could
+	// switch from one search strategy to the other depending on the number
+	// of buckets.
+	//
+	// Microbenchmarks (BenchmarkHistogramNoLabels):
+	// 11 buckets: 38.3 ns/op linear - binary 48.7 ns/op
+	// 100 buckets: 78.1 ns/op linear - binary 54.9 ns/op
+	// 300 buckets: 154 ns/op linear - binary 61.6 ns/op
+	i := sort.SearchFloat64s(h.upperBounds, v)
+	if i < len(h.counts) {
+		atomic.AddUint64(&h.counts[i], 1)
+	}
+	atomic.AddUint64(&h.count, 1)
+	for {
+		oldBits := atomic.LoadUint64(&h.sumBits)
+		newBits := math.Float64bits(math.Float64frombits(oldBits) + v)
+		if atomic.CompareAndSwapUint64(&h.sumBits, oldBits, newBits) {
+			break
+		}
+	}
+}
+
+func (h *histogram) Write(out *dto.Metric) error {
+	his := &dto.Histogram{}
+	buckets := make([]*dto.Bucket, len(h.upperBounds))
+
+	his.SampleSum = proto.Float64(math.Float64frombits(atomic.LoadUint64(&h.sumBits)))
+	his.SampleCount = proto.Uint64(atomic.LoadUint64(&h.count))
+	var count uint64
+	for i, upperBound := range h.upperBounds {
+		count += atomic.LoadUint64(&h.counts[i])
+		buckets[i] = &dto.Bucket{
+			CumulativeCount: proto.Uint64(count),
+			UpperBound:      proto.Float64(upperBound),
+		}
+	}
+	his.Bucket = buckets
+	out.Histogram = his
+	out.Label = h.labelPairs
+	return nil
+}
+
+// HistogramVec is a Collector that bundles a set of Histograms that all share the
+// same Desc, but have different values for their variable labels. This is used
+// if you want to count the same thing partitioned by various dimensions
+// (e.g. HTTP request latencies, partitioned by status code and method). Create
+// instances with NewHistogramVec.
+type HistogramVec struct {
+	*MetricVec
+}
+
+// NewHistogramVec creates a new HistogramVec based on the provided HistogramOpts and
+// partitioned by the given label names. At least one label name must be
+// provided.
+func NewHistogramVec(opts HistogramOpts, labelNames []string) *HistogramVec {
+	desc := NewDesc(
+		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		opts.Help,
+		labelNames,
+		opts.ConstLabels,
+	)
+	return &HistogramVec{
+		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
+			return newHistogram(desc, opts, lvs...)
+		}),
+	}
+}
+
+// GetMetricWithLabelValues replaces the method of the same name in
+// MetricVec. The difference is that this method returns a Histogram and not a
+// Metric so that no type conversion is required.
+func (m *HistogramVec) GetMetricWithLabelValues(lvs ...string) (Histogram, error) {
+	metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...)
+	if metric != nil {
+		return metric.(Histogram), err
+	}
+	return nil, err
+}
+
+// GetMetricWith replaces the method of the same name in MetricVec. The
+// difference is that this method returns a Histogram and not a Metric so that no
+// type conversion is required.
+func (m *HistogramVec) GetMetricWith(labels Labels) (Histogram, error) {
+	metric, err := m.MetricVec.GetMetricWith(labels)
+	if metric != nil {
+		return metric.(Histogram), err
+	}
+	return nil, err
+}
+
+// WithLabelValues works as GetMetricWithLabelValues, but panics where
+// GetMetricWithLabelValues would have returned an error. By not returning an
+// error, WithLabelValues allows shortcuts like
+//     myVec.WithLabelValues("404", "GET").Observe(42.21)
+func (m *HistogramVec) WithLabelValues(lvs ...string) Histogram {
+	return m.MetricVec.WithLabelValues(lvs...).(Histogram)
+}
+
+// With works as GetMetricWith, but panics where GetMetricWithLabels would have
+// returned an error. By not returning an error, With allows shortcuts like
+//     myVec.With(Labels{"code": "404", "method": "GET"}).Observe(42.21)
+func (m *HistogramVec) With(labels Labels) Histogram {
+	return m.MetricVec.With(labels).(Histogram)
+}
+
+type constHistogram struct {
+	desc       *Desc
+	count      uint64
+	sum        float64
+	buckets    map[float64]uint64
+	labelPairs []*dto.LabelPair
+}
+
+func (h *constHistogram) Desc() *Desc {
+	return h.desc
+}
+
+func (h *constHistogram) Write(out *dto.Metric) error {
+	his := &dto.Histogram{}
+	buckets := make([]*dto.Bucket, 0, len(h.buckets))
+
+	his.SampleCount = proto.Uint64(h.count)
+	his.SampleSum = proto.Float64(h.sum)
+
+	for upperBound, count := range h.buckets {
+		buckets = append(buckets, &dto.Bucket{
+			CumulativeCount: proto.Uint64(count),
+			UpperBound:      proto.Float64(upperBound),
+		})
+	}
+
+	if len(buckets) > 0 {
+		sort.Sort(buckSort(buckets))
+	}
+	his.Bucket = buckets
+
+	out.Histogram = his
+	out.Label = h.labelPairs
+
+	return nil
+}
+
+// NewConstHistogram returns a metric representing a Prometheus histogram with
+// fixed values for the count, sum, and bucket counts. As those parameters
+// cannot be changed, the returned value does not implement the Histogram
+// interface (but only the Metric interface). Users of this package will not
+// have much use for it in regular operations. However, when implementing custom
+// Collectors, it is useful as a throw-away metric that is generated on the fly
+// to send it to Prometheus in the Collect method.
+//
+// buckets is a map of upper bounds to cumulative counts, excluding the +Inf
+// bucket.
+//
+// NewConstHistogram returns an error if the length of labelValues is not
+// consistent with the variable labels in Desc.
+func NewConstHistogram(
+	desc *Desc,
+	count uint64,
+	sum float64,
+	buckets map[float64]uint64,
+	labelValues ...string,
+) (Metric, error) {
+	if len(desc.variableLabels) != len(labelValues) {
+		return nil, errInconsistentCardinality
+	}
+	return &constHistogram{
+		desc:       desc,
+		count:      count,
+		sum:        sum,
+		buckets:    buckets,
+		labelPairs: makeLabelPairs(desc, labelValues),
+	}, nil
+}
+
+// MustNewConstHistogram is a version of NewConstHistogram that panics where
+// NewConstMetric would have returned an error.
+func MustNewConstHistogram(
+	desc *Desc,
+	count uint64,
+	sum float64,
+	buckets map[float64]uint64,
+	labelValues ...string,
+) Metric {
+	m, err := NewConstHistogram(desc, count, sum, buckets, labelValues...)
+	if err != nil {
+		panic(err)
+	}
+	return m
+}
+
+type buckSort []*dto.Bucket
+
+func (s buckSort) Len() int {
+	return len(s)
+}
+
+func (s buckSort) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+
+func (s buckSort) Less(i, j int) bool {
+	return s[i].GetUpperBound() < s[j].GetUpperBound()
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/histogram_test.go b/vendor/github.com/prometheus/client_golang/prometheus/histogram_test.go
new file mode 100644
index 000000000..d1242e08d
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/histogram_test.go
@@ -0,0 +1,326 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"math"
+	"math/rand"
+	"reflect"
+	"sort"
+	"sync"
+	"testing"
+	"testing/quick"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+func benchmarkHistogramObserve(w int, b *testing.B) {
+	b.StopTimer()
+
+	wg := new(sync.WaitGroup)
+	wg.Add(w)
+
+	g := new(sync.WaitGroup)
+	g.Add(1)
+
+	s := NewHistogram(HistogramOpts{})
+
+	for i := 0; i < w; i++ {
+		go func() {
+			g.Wait()
+
+			for i := 0; i < b.N; i++ {
+				s.Observe(float64(i))
+			}
+
+			wg.Done()
+		}()
+	}
+
+	b.StartTimer()
+	g.Done()
+	wg.Wait()
+}
+
+func BenchmarkHistogramObserve1(b *testing.B) {
+	benchmarkHistogramObserve(1, b)
+}
+
+func BenchmarkHistogramObserve2(b *testing.B) {
+	benchmarkHistogramObserve(2, b)
+}
+
+func BenchmarkHistogramObserve4(b *testing.B) {
+	benchmarkHistogramObserve(4, b)
+}
+
+func BenchmarkHistogramObserve8(b *testing.B) {
+	benchmarkHistogramObserve(8, b)
+}
+
+func benchmarkHistogramWrite(w int, b *testing.B) {
+	b.StopTimer()
+
+	wg := new(sync.WaitGroup)
+	wg.Add(w)
+
+	g := new(sync.WaitGroup)
+	g.Add(1)
+
+	s := NewHistogram(HistogramOpts{})
+
+	for i := 0; i < 1000000; i++ {
+		s.Observe(float64(i))
+	}
+
+	for j := 0; j < w; j++ {
+		outs := make([]dto.Metric, b.N)
+
+		go func(o []dto.Metric) {
+			g.Wait()
+
+			for i := 0; i < b.N; i++ {
+				s.Write(&o[i])
+			}
+
+			wg.Done()
+		}(outs)
+	}
+
+	b.StartTimer()
+	g.Done()
+	wg.Wait()
+}
+
+func BenchmarkHistogramWrite1(b *testing.B) {
+	benchmarkHistogramWrite(1, b)
+}
+
+func BenchmarkHistogramWrite2(b *testing.B) {
+	benchmarkHistogramWrite(2, b)
+}
+
+func BenchmarkHistogramWrite4(b *testing.B) {
+	benchmarkHistogramWrite(4, b)
+}
+
+func BenchmarkHistogramWrite8(b *testing.B) {
+	benchmarkHistogramWrite(8, b)
+}
+
+// Intentionally adding +Inf here to test if that case is handled correctly.
+// Also, getCumulativeCounts depends on it.
+var testBuckets = []float64{-2, -1, -0.5, 0, 0.5, 1, 2, math.Inf(+1)}
+
+func TestHistogramConcurrency(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping test in short mode.")
+	}
+
+	rand.Seed(42)
+
+	it := func(n uint32) bool {
+		mutations := int(n%1e4 + 1e4)
+		concLevel := int(n%5 + 1)
+		total := mutations * concLevel
+
+		var start, end sync.WaitGroup
+		start.Add(1)
+		end.Add(concLevel)
+
+		sum := NewHistogram(HistogramOpts{
+			Name:    "test_histogram",
+			Help:    "helpless",
+			Buckets: testBuckets,
+		})
+
+		allVars := make([]float64, total)
+		var sampleSum float64
+		for i := 0; i < concLevel; i++ {
+			vals := make([]float64, mutations)
+			for j := 0; j < mutations; j++ {
+				v := rand.NormFloat64()
+				vals[j] = v
+				allVars[i*mutations+j] = v
+				sampleSum += v
+			}
+
+			go func(vals []float64) {
+				start.Wait()
+				for _, v := range vals {
+					sum.Observe(v)
+				}
+				end.Done()
+			}(vals)
+		}
+		sort.Float64s(allVars)
+		start.Done()
+		end.Wait()
+
+		m := &dto.Metric{}
+		sum.Write(m)
+		if got, want := int(*m.Histogram.SampleCount), total; got != want {
+			t.Errorf("got sample count %d, want %d", got, want)
+		}
+		if got, want := *m.Histogram.SampleSum, sampleSum; math.Abs((got-want)/want) > 0.001 {
+			t.Errorf("got sample sum %f, want %f", got, want)
+		}
+
+		wantCounts := getCumulativeCounts(allVars)
+
+		if got, want := len(m.Histogram.Bucket), len(testBuckets)-1; got != want {
+			t.Errorf("got %d buckets in protobuf, want %d", got, want)
+		}
+		for i, wantBound := range testBuckets {
+			if i == len(testBuckets)-1 {
+				break // No +Inf bucket in protobuf.
+			}
+			if gotBound := *m.Histogram.Bucket[i].UpperBound; gotBound != wantBound {
+				t.Errorf("got bound %f, want %f", gotBound, wantBound)
+			}
+			if gotCount, wantCount := *m.Histogram.Bucket[i].CumulativeCount, wantCounts[i]; gotCount != wantCount {
+				t.Errorf("got count %d, want %d", gotCount, wantCount)
+			}
+		}
+		return true
+	}
+
+	if err := quick.Check(it, nil); err != nil {
+		t.Error(err)
+	}
+}
+
+func TestHistogramVecConcurrency(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping test in short mode.")
+	}
+
+	rand.Seed(42)
+
+	objectives := make([]float64, 0, len(DefObjectives))
+	for qu := range DefObjectives {
+
+		objectives = append(objectives, qu)
+	}
+	sort.Float64s(objectives)
+
+	it := func(n uint32) bool {
+		mutations := int(n%1e4 + 1e4)
+		concLevel := int(n%7 + 1)
+		vecLength := int(n%3 + 1)
+
+		var start, end sync.WaitGroup
+		start.Add(1)
+		end.Add(concLevel)
+
+		his := NewHistogramVec(
+			HistogramOpts{
+				Name:    "test_histogram",
+				Help:    "helpless",
+				Buckets: []float64{-2, -1, -0.5, 0, 0.5, 1, 2, math.Inf(+1)},
+			},
+			[]string{"label"},
+		)
+
+		allVars := make([][]float64, vecLength)
+		sampleSums := make([]float64, vecLength)
+		for i := 0; i < concLevel; i++ {
+			vals := make([]float64, mutations)
+			picks := make([]int, mutations)
+			for j := 0; j < mutations; j++ {
+				v := rand.NormFloat64()
+				vals[j] = v
+				pick := rand.Intn(vecLength)
+				picks[j] = pick
+				allVars[pick] = append(allVars[pick], v)
+				sampleSums[pick] += v
+			}
+
+			go func(vals []float64) {
+				start.Wait()
+				for i, v := range vals {
+					his.WithLabelValues(string('A' + picks[i])).Observe(v)
+				}
+				end.Done()
+			}(vals)
+		}
+		for _, vars := range allVars {
+			sort.Float64s(vars)
+		}
+		start.Done()
+		end.Wait()
+
+		for i := 0; i < vecLength; i++ {
+			m := &dto.Metric{}
+			s := his.WithLabelValues(string('A' + i))
+			s.Write(m)
+
+			if got, want := len(m.Histogram.Bucket), len(testBuckets)-1; got != want {
+				t.Errorf("got %d buckets in protobuf, want %d", got, want)
+			}
+			if got, want := int(*m.Histogram.SampleCount), len(allVars[i]); got != want {
+				t.Errorf("got sample count %d, want %d", got, want)
+			}
+			if got, want := *m.Histogram.SampleSum, sampleSums[i]; math.Abs((got-want)/want) > 0.001 {
+				t.Errorf("got sample sum %f, want %f", got, want)
+			}
+
+			wantCounts := getCumulativeCounts(allVars[i])
+
+			for j, wantBound := range testBuckets {
+				if j == len(testBuckets)-1 {
+					break // No +Inf bucket in protobuf.
+				}
+				if gotBound := *m.Histogram.Bucket[j].UpperBound; gotBound != wantBound {
+					t.Errorf("got bound %f, want %f", gotBound, wantBound)
+				}
+				if gotCount, wantCount := *m.Histogram.Bucket[j].CumulativeCount, wantCounts[j]; gotCount != wantCount {
+					t.Errorf("got count %d, want %d", gotCount, wantCount)
+				}
+			}
+		}
+		return true
+	}
+
+	if err := quick.Check(it, nil); err != nil {
+		t.Error(err)
+	}
+}
+
+func getCumulativeCounts(vars []float64) []uint64 {
+	counts := make([]uint64, len(testBuckets))
+	for _, v := range vars {
+		for i := len(testBuckets) - 1; i >= 0; i-- {
+			if v > testBuckets[i] {
+				break
+			}
+			counts[i]++
+		}
+	}
+	return counts
+}
+
+func TestBuckets(t *testing.T) {
+	got := LinearBuckets(-15, 5, 6)
+	want := []float64{-15, -10, -5, 0, 5, 10}
+	if !reflect.DeepEqual(got, want) {
+		t.Errorf("linear buckets: got %v, want %v", got, want)
+	}
+
+	got = ExponentialBuckets(100, 1.2, 3)
+	want = []float64{100, 120, 144}
+	if !reflect.DeepEqual(got, want) {
+		t.Errorf("linear buckets: got %v, want %v", got, want)
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/http.go b/vendor/github.com/prometheus/client_golang/prometheus/http.go
new file mode 100644
index 000000000..67ee5ac79
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/http.go
@@ -0,0 +1,490 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"bufio"
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/prometheus/common/expfmt"
+)
+
+// TODO(beorn7): Remove this whole file. It is a partial mirror of
+// promhttp/http.go (to avoid circular import chains) where everything HTTP
+// related should live. The functions here are just for avoiding
+// breakage. Everything is deprecated.
+
+const (
+	contentTypeHeader     = "Content-Type"
+	contentLengthHeader   = "Content-Length"
+	contentEncodingHeader = "Content-Encoding"
+	acceptEncodingHeader  = "Accept-Encoding"
+)
+
+var bufPool sync.Pool
+
+func getBuf() *bytes.Buffer {
+	buf := bufPool.Get()
+	if buf == nil {
+		return &bytes.Buffer{}
+	}
+	return buf.(*bytes.Buffer)
+}
+
+func giveBuf(buf *bytes.Buffer) {
+	buf.Reset()
+	bufPool.Put(buf)
+}
+
+// Handler returns an HTTP handler for the DefaultGatherer. It is
+// already instrumented with InstrumentHandler (using "prometheus" as handler
+// name).
+//
+// Deprecated: Please note the issues described in the doc comment of
+// InstrumentHandler. You might want to consider using promhttp.Handler instead
+// (which is non instrumented).
+func Handler() http.Handler {
+	return InstrumentHandler("prometheus", UninstrumentedHandler())
+}
+
+// UninstrumentedHandler returns an HTTP handler for the DefaultGatherer.
+//
+// Deprecated: Use promhttp.Handler instead. See there for further documentation.
+func UninstrumentedHandler() http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+		mfs, err := DefaultGatherer.Gather()
+		if err != nil {
+			http.Error(w, "An error has occurred during metrics collection:\n\n"+err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		contentType := expfmt.Negotiate(req.Header)
+		buf := getBuf()
+		defer giveBuf(buf)
+		writer, encoding := decorateWriter(req, buf)
+		enc := expfmt.NewEncoder(writer, contentType)
+		var lastErr error
+		for _, mf := range mfs {
+			if err := enc.Encode(mf); err != nil {
+				lastErr = err
+				http.Error(w, "An error has occurred during metrics encoding:\n\n"+err.Error(), http.StatusInternalServerError)
+				return
+			}
+		}
+		if closer, ok := writer.(io.Closer); ok {
+			closer.Close()
+		}
+		if lastErr != nil && buf.Len() == 0 {
+			http.Error(w, "No metrics encoded, last error:\n\n"+err.Error(), http.StatusInternalServerError)
+			return
+		}
+		header := w.Header()
+		header.Set(contentTypeHeader, string(contentType))
+		header.Set(contentLengthHeader, fmt.Sprint(buf.Len()))
+		if encoding != "" {
+			header.Set(contentEncodingHeader, encoding)
+		}
+		w.Write(buf.Bytes())
+	})
+}
+
+// decorateWriter wraps a writer to handle gzip compression if requested.  It
+// returns the decorated writer and the appropriate "Content-Encoding" header
+// (which is empty if no compression is enabled).
+func decorateWriter(request *http.Request, writer io.Writer) (io.Writer, string) {
+	header := request.Header.Get(acceptEncodingHeader)
+	parts := strings.Split(header, ",")
+	for _, part := range parts {
+		part := strings.TrimSpace(part)
+		if part == "gzip" || strings.HasPrefix(part, "gzip;") {
+			return gzip.NewWriter(writer), "gzip"
+		}
+	}
+	return writer, ""
+}
+
+var instLabels = []string{"method", "code"}
+
+type nower interface {
+	Now() time.Time
+}
+
+type nowFunc func() time.Time
+
+func (n nowFunc) Now() time.Time {
+	return n()
+}
+
+var now nower = nowFunc(func() time.Time {
+	return time.Now()
+})
+
+func nowSeries(t ...time.Time) nower {
+	return nowFunc(func() time.Time {
+		defer func() {
+			t = t[1:]
+		}()
+
+		return t[0]
+	})
+}
+
+// InstrumentHandler wraps the given HTTP handler for instrumentation. It
+// registers four metric collectors (if not already done) and reports HTTP
+// metrics to the (newly or already) registered collectors: http_requests_total
+// (CounterVec), http_request_duration_microseconds (Summary),
+// http_request_size_bytes (Summary), http_response_size_bytes (Summary). Each
+// has a constant label named "handler" with the provided handlerName as
+// value. http_requests_total is a metric vector partitioned by HTTP method
+// (label name "method") and HTTP status code (label name "code").
+//
+// Deprecated: InstrumentHandler has several issues:
+//
+// - It uses Summaries rather than Histograms. Summaries are not useful if
+// aggregation across multiple instances is required.
+//
+// - It uses microseconds as unit, which is deprecated and should be replaced by
+// seconds.
+//
+// - The size of the request is calculated in a separate goroutine. Since this
+// calculator requires access to the request header, it creates a race with
+// any writes to the header performed during request handling.
+// httputil.ReverseProxy is a prominent example for a handler
+// performing such writes.
+//
+// Upcoming versions of this package will provide ways of instrumenting HTTP
+// handlers that are more flexible and have fewer issues. Please prefer direct
+// instrumentation in the meantime.
+func InstrumentHandler(handlerName string, handler http.Handler) http.HandlerFunc {
+	return InstrumentHandlerFunc(handlerName, handler.ServeHTTP)
+}
+
+// InstrumentHandlerFunc wraps the given function for instrumentation. It
+// otherwise works in the same way as InstrumentHandler (and shares the same
+// issues).
+//
+// Deprecated: InstrumentHandlerFunc is deprecated for the same reasons as
+// InstrumentHandler is.
+func InstrumentHandlerFunc(handlerName string, handlerFunc func(http.ResponseWriter, *http.Request)) http.HandlerFunc {
+	return InstrumentHandlerFuncWithOpts(
+		SummaryOpts{
+			Subsystem:   "http",
+			ConstLabels: Labels{"handler": handlerName},
+		},
+		handlerFunc,
+	)
+}
+
+// InstrumentHandlerWithOpts works like InstrumentHandler (and shares the same
+// issues) but provides more flexibility (at the cost of a more complex call
+// syntax). As InstrumentHandler, this function registers four metric
+// collectors, but it uses the provided SummaryOpts to create them. However, the
+// fields "Name" and "Help" in the SummaryOpts are ignored. "Name" is replaced
+// by "requests_total", "request_duration_microseconds", "request_size_bytes",
+// and "response_size_bytes", respectively. "Help" is replaced by an appropriate
+// help string. The names of the variable labels of the http_requests_total
+// CounterVec are "method" (get, post, etc.), and "code" (HTTP status code).
+//
+// If InstrumentHandlerWithOpts is called as follows, it mimics exactly the
+// behavior of InstrumentHandler:
+//
+//     prometheus.InstrumentHandlerWithOpts(
+//         prometheus.SummaryOpts{
+//              Subsystem:   "http",
+//              ConstLabels: prometheus.Labels{"handler": handlerName},
+//         },
+//         handler,
+//     )
+//
+// Technical detail: "requests_total" is a CounterVec, not a SummaryVec, so it
+// cannot use SummaryOpts. Instead, a CounterOpts struct is created internally,
+// and all its fields are set to the equally named fields in the provided
+// SummaryOpts.
+//
+// Deprecated: InstrumentHandlerWithOpts is deprecated for the same reasons as
+// InstrumentHandler is.
+func InstrumentHandlerWithOpts(opts SummaryOpts, handler http.Handler) http.HandlerFunc {
+	return InstrumentHandlerFuncWithOpts(opts, handler.ServeHTTP)
+}
+
+// InstrumentHandlerFuncWithOpts works like InstrumentHandlerFunc (and shares
+// the same issues) but provides more flexibility (at the cost of a more complex
+// call syntax). See InstrumentHandlerWithOpts for details how the provided
+// SummaryOpts are used.
+//
+// Deprecated: InstrumentHandlerFuncWithOpts is deprecated for the same reasons
+// as InstrumentHandler is.
+func InstrumentHandlerFuncWithOpts(opts SummaryOpts, handlerFunc func(http.ResponseWriter, *http.Request)) http.HandlerFunc {
+	reqCnt := NewCounterVec(
+		CounterOpts{
+			Namespace:   opts.Namespace,
+			Subsystem:   opts.Subsystem,
+			Name:        "requests_total",
+			Help:        "Total number of HTTP requests made.",
+			ConstLabels: opts.ConstLabels,
+		},
+		instLabels,
+	)
+
+	opts.Name = "request_duration_microseconds"
+	opts.Help = "The HTTP request latencies in microseconds."
+	reqDur := NewSummary(opts)
+
+	opts.Name = "request_size_bytes"
+	opts.Help = "The HTTP request sizes in bytes."
+	reqSz := NewSummary(opts)
+
+	opts.Name = "response_size_bytes"
+	opts.Help = "The HTTP response sizes in bytes."
+	resSz := NewSummary(opts)
+
+	regReqCnt := MustRegisterOrGet(reqCnt).(*CounterVec)
+	regReqDur := MustRegisterOrGet(reqDur).(Summary)
+	regReqSz := MustRegisterOrGet(reqSz).(Summary)
+	regResSz := MustRegisterOrGet(resSz).(Summary)
+
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		now := time.Now()
+
+		delegate := &responseWriterDelegator{ResponseWriter: w}
+		out := make(chan int)
+		urlLen := 0
+		if r.URL != nil {
+			urlLen = len(r.URL.String())
+		}
+		go computeApproximateRequestSize(r, out, urlLen)
+
+		_, cn := w.(http.CloseNotifier)
+		_, fl := w.(http.Flusher)
+		_, hj := w.(http.Hijacker)
+		_, rf := w.(io.ReaderFrom)
+		var rw http.ResponseWriter
+		if cn && fl && hj && rf {
+			rw = &fancyResponseWriterDelegator{delegate}
+		} else {
+			rw = delegate
+		}
+		handlerFunc(rw, r)
+
+		elapsed := float64(time.Since(now)) / float64(time.Microsecond)
+
+		method := sanitizeMethod(r.Method)
+		code := sanitizeCode(delegate.status)
+		regReqCnt.WithLabelValues(method, code).Inc()
+		regReqDur.Observe(elapsed)
+		regResSz.Observe(float64(delegate.written))
+		regReqSz.Observe(float64(<-out))
+	})
+}
+
+func computeApproximateRequestSize(r *http.Request, out chan int, s int) {
+	s += len(r.Method)
+	s += len(r.Proto)
+	for name, values := range r.Header {
+		s += len(name)
+		for _, value := range values {
+			s += len(value)
+		}
+	}
+	s += len(r.Host)
+
+	// N.B. r.Form and r.MultipartForm are assumed to be included in r.URL.
+
+	if r.ContentLength != -1 {
+		s += int(r.ContentLength)
+	}
+	out <- s
+}
+
+type responseWriterDelegator struct {
+	http.ResponseWriter
+
+	handler, method string
+	status          int
+	written         int64
+	wroteHeader     bool
+}
+
+func (r *responseWriterDelegator) WriteHeader(code int) {
+	r.status = code
+	r.wroteHeader = true
+	r.ResponseWriter.WriteHeader(code)
+}
+
+func (r *responseWriterDelegator) Write(b []byte) (int, error) {
+	if !r.wroteHeader {
+		r.WriteHeader(http.StatusOK)
+	}
+	n, err := r.ResponseWriter.Write(b)
+	r.written += int64(n)
+	return n, err
+}
+
+type fancyResponseWriterDelegator struct {
+	*responseWriterDelegator
+}
+
+func (f *fancyResponseWriterDelegator) CloseNotify() <-chan bool {
+	return f.ResponseWriter.(http.CloseNotifier).CloseNotify()
+}
+
+func (f *fancyResponseWriterDelegator) Flush() {
+	f.ResponseWriter.(http.Flusher).Flush()
+}
+
+func (f *fancyResponseWriterDelegator) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+	return f.ResponseWriter.(http.Hijacker).Hijack()
+}
+
+func (f *fancyResponseWriterDelegator) ReadFrom(r io.Reader) (int64, error) {
+	if !f.wroteHeader {
+		f.WriteHeader(http.StatusOK)
+	}
+	n, err := f.ResponseWriter.(io.ReaderFrom).ReadFrom(r)
+	f.written += n
+	return n, err
+}
+
+func sanitizeMethod(m string) string {
+	switch m {
+	case "GET", "get":
+		return "get"
+	case "PUT", "put":
+		return "put"
+	case "HEAD", "head":
+		return "head"
+	case "POST", "post":
+		return "post"
+	case "DELETE", "delete":
+		return "delete"
+	case "CONNECT", "connect":
+		return "connect"
+	case "OPTIONS", "options":
+		return "options"
+	case "NOTIFY", "notify":
+		return "notify"
+	default:
+		return strings.ToLower(m)
+	}
+}
+
+func sanitizeCode(s int) string {
+	switch s {
+	case 100:
+		return "100"
+	case 101:
+		return "101"
+
+	case 200:
+		return "200"
+	case 201:
+		return "201"
+	case 202:
+		return "202"
+	case 203:
+		return "203"
+	case 204:
+		return "204"
+	case 205:
+		return "205"
+	case 206:
+		return "206"
+
+	case 300:
+		return "300"
+	case 301:
+		return "301"
+	case 302:
+		return "302"
+	case 304:
+		return "304"
+	case 305:
+		return "305"
+	case 307:
+		return "307"
+
+	case 400:
+		return "400"
+	case 401:
+		return "401"
+	case 402:
+		return "402"
+	case 403:
+		return "403"
+	case 404:
+		return "404"
+	case 405:
+		return "405"
+	case 406:
+		return "406"
+	case 407:
+		return "407"
+	case 408:
+		return "408"
+	case 409:
+		return "409"
+	case 410:
+		return "410"
+	case 411:
+		return "411"
+	case 412:
+		return "412"
+	case 413:
+		return "413"
+	case 414:
+		return "414"
+	case 415:
+		return "415"
+	case 416:
+		return "416"
+	case 417:
+		return "417"
+	case 418:
+		return "418"
+
+	case 500:
+		return "500"
+	case 501:
+		return "501"
+	case 502:
+		return "502"
+	case 503:
+		return "503"
+	case 504:
+		return "504"
+	case 505:
+		return "505"
+
+	case 428:
+		return "428"
+	case 429:
+		return "429"
+	case 431:
+		return "431"
+	case 511:
+		return "511"
+
+	default:
+		return strconv.Itoa(s)
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/http_test.go b/vendor/github.com/prometheus/client_golang/prometheus/http_test.go
new file mode 100644
index 000000000..ffe0418cf
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/http_test.go
@@ -0,0 +1,121 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+type respBody string
+
+func (b respBody) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(http.StatusTeapot)
+	w.Write([]byte(b))
+}
+
+func TestInstrumentHandler(t *testing.T) {
+	defer func(n nower) {
+		now = n.(nower)
+	}(now)
+
+	instant := time.Now()
+	end := instant.Add(30 * time.Second)
+	now = nowSeries(instant, end)
+	respBody := respBody("Howdy there!")
+
+	hndlr := InstrumentHandler("test-handler", respBody)
+
+	opts := SummaryOpts{
+		Subsystem:   "http",
+		ConstLabels: Labels{"handler": "test-handler"},
+	}
+
+	reqCnt := MustRegisterOrGet(NewCounterVec(
+		CounterOpts{
+			Namespace:   opts.Namespace,
+			Subsystem:   opts.Subsystem,
+			Name:        "requests_total",
+			Help:        "Total number of HTTP requests made.",
+			ConstLabels: opts.ConstLabels,
+		},
+		instLabels,
+	)).(*CounterVec)
+
+	opts.Name = "request_duration_microseconds"
+	opts.Help = "The HTTP request latencies in microseconds."
+	reqDur := MustRegisterOrGet(NewSummary(opts)).(Summary)
+
+	opts.Name = "request_size_bytes"
+	opts.Help = "The HTTP request sizes in bytes."
+	MustRegisterOrGet(NewSummary(opts))
+
+	opts.Name = "response_size_bytes"
+	opts.Help = "The HTTP response sizes in bytes."
+	MustRegisterOrGet(NewSummary(opts))
+
+	reqCnt.Reset()
+
+	resp := httptest.NewRecorder()
+	req := &http.Request{
+		Method: "GET",
+	}
+
+	hndlr.ServeHTTP(resp, req)
+
+	if resp.Code != http.StatusTeapot {
+		t.Fatalf("expected status %d, got %d", http.StatusTeapot, resp.Code)
+	}
+	if string(resp.Body.Bytes()) != "Howdy there!" {
+		t.Fatalf("expected body %s, got %s", "Howdy there!", string(resp.Body.Bytes()))
+	}
+
+	out := &dto.Metric{}
+	reqDur.Write(out)
+	if want, got := "test-handler", out.Label[0].GetValue(); want != got {
+		t.Errorf("want label value %q in reqDur, got %q", want, got)
+	}
+	if want, got := uint64(1), out.Summary.GetSampleCount(); want != got {
+		t.Errorf("want sample count %d in reqDur, got %d", want, got)
+	}
+
+	out.Reset()
+	if want, got := 1, len(reqCnt.children); want != got {
+		t.Errorf("want %d children in reqCnt, got %d", want, got)
+	}
+	cnt, err := reqCnt.GetMetricWithLabelValues("get", "418")
+	if err != nil {
+		t.Fatal(err)
+	}
+	cnt.Write(out)
+	if want, got := "418", out.Label[0].GetValue(); want != got {
+		t.Errorf("want label value %q in reqCnt, got %q", want, got)
+	}
+	if want, got := "test-handler", out.Label[1].GetValue(); want != got {
+		t.Errorf("want label value %q in reqCnt, got %q", want, got)
+	}
+	if want, got := "get", out.Label[2].GetValue(); want != got {
+		t.Errorf("want label value %q in reqCnt, got %q", want, got)
+	}
+	if out.Counter == nil {
+		t.Fatal("expected non-nil counter in reqCnt")
+	}
+	if want, got := 1., out.Counter.GetValue(); want != got {
+		t.Errorf("want reqCnt of %f, got %f", want, got)
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/metric.go b/vendor/github.com/prometheus/client_golang/prometheus/metric.go
new file mode 100644
index 000000000..d4063d98f
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/metric.go
@@ -0,0 +1,166 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"strings"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+const separatorByte byte = 255
+
+// A Metric models a single sample value with its meta data being exported to
+// Prometheus. Implementations of Metric in this package are Gauge, Counter,
+// Histogram, Summary, and Untyped.
+type Metric interface {
+	// Desc returns the descriptor for the Metric. This method idempotently
+	// returns the same descriptor throughout the lifetime of the
+	// Metric. The returned descriptor is immutable by contract. A Metric
+	// unable to describe itself must return an invalid descriptor (created
+	// with NewInvalidDesc).
+	Desc() *Desc
+	// Write encodes the Metric into a "Metric" Protocol Buffer data
+	// transmission object.
+	//
+	// Metric implementations must observe concurrency safety as reads of
+	// this metric may occur at any time, and any blocking occurs at the
+	// expense of total performance of rendering all registered
+	// metrics. Ideally, Metric implementations should support concurrent
+	// readers.
+	//
+	// While populating dto.Metric, it is the responsibility of the
+	// implementation to ensure validity of the Metric protobuf (like valid
+	// UTF-8 strings or syntactically valid metric and label names). It is
+	// recommended to sort labels lexicographically. (Implementers may find
+	// LabelPairSorter useful for that.) Callers of Write should still make
+	// sure of sorting if they depend on it.
+	Write(*dto.Metric) error
+	// TODO(beorn7): The original rationale of passing in a pre-allocated
+	// dto.Metric protobuf to save allocations has disappeared. The
+	// signature of this method should be changed to "Write() (*dto.Metric,
+	// error)".
+}
+
+// Opts bundles the options for creating most Metric types. Each metric
+// implementation XXX has its own XXXOpts type, but in most cases, it is just be
+// an alias of this type (which might change when the requirement arises.)
+//
+// It is mandatory to set Name and Help to a non-empty string. All other fields
+// are optional and can safely be left at their zero value.
+type Opts struct {
+	// Namespace, Subsystem, and Name are components of the fully-qualified
+	// name of the Metric (created by joining these components with
+	// "_"). Only Name is mandatory, the others merely help structuring the
+	// name. Note that the fully-qualified name of the metric must be a
+	// valid Prometheus metric name.
+	Namespace string
+	Subsystem string
+	Name      string
+
+	// Help provides information about this metric. Mandatory!
+	//
+	// Metrics with the same fully-qualified name must have the same Help
+	// string.
+	Help string
+
+	// ConstLabels are used to attach fixed labels to this metric. Metrics
+	// with the same fully-qualified name must have the same label names in
+	// their ConstLabels.
+	//
+	// Note that in most cases, labels have a value that varies during the
+	// lifetime of a process. Those labels are usually managed with a metric
+	// vector collector (like CounterVec, GaugeVec, UntypedVec). ConstLabels
+	// serve only special purposes. One is for the special case where the
+	// value of a label does not change during the lifetime of a process,
+	// e.g. if the revision of the running binary is put into a
+	// label. Another, more advanced purpose is if more than one Collector
+	// needs to collect Metrics with the same fully-qualified name. In that
+	// case, those Metrics must differ in the values of their
+	// ConstLabels. See the Collector examples.
+	//
+	// If the value of a label never changes (not even between binaries),
+	// that label most likely should not be a label at all (but part of the
+	// metric name).
+	ConstLabels Labels
+}
+
+// BuildFQName joins the given three name components by "_". Empty name
+// components are ignored. If the name parameter itself is empty, an empty
+// string is returned, no matter what. Metric implementations included in this
+// library use this function internally to generate the fully-qualified metric
+// name from the name component in their Opts. Users of the library will only
+// need this function if they implement their own Metric or instantiate a Desc
+// (with NewDesc) directly.
+func BuildFQName(namespace, subsystem, name string) string {
+	if name == "" {
+		return ""
+	}
+	switch {
+	case namespace != "" && subsystem != "":
+		return strings.Join([]string{namespace, subsystem, name}, "_")
+	case namespace != "":
+		return strings.Join([]string{namespace, name}, "_")
+	case subsystem != "":
+		return strings.Join([]string{subsystem, name}, "_")
+	}
+	return name
+}
+
+// LabelPairSorter implements sort.Interface. It is used to sort a slice of
+// dto.LabelPair pointers. This is useful for implementing the Write method of
+// custom metrics.
+type LabelPairSorter []*dto.LabelPair
+
+func (s LabelPairSorter) Len() int {
+	return len(s)
+}
+
+func (s LabelPairSorter) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+
+func (s LabelPairSorter) Less(i, j int) bool {
+	return s[i].GetName() < s[j].GetName()
+}
+
+type hashSorter []uint64
+
+func (s hashSorter) Len() int {
+	return len(s)
+}
+
+func (s hashSorter) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+
+func (s hashSorter) Less(i, j int) bool {
+	return s[i] < s[j]
+}
+
+type invalidMetric struct {
+	desc *Desc
+	err  error
+}
+
+// NewInvalidMetric returns a metric whose Write method always returns the
+// provided error. It is useful if a Collector finds itself unable to collect
+// a metric and wishes to report an error to the registry.
+func NewInvalidMetric(desc *Desc, err error) Metric {
+	return &invalidMetric{desc, err}
+}
+
+func (m *invalidMetric) Desc() *Desc { return m.desc }
+
+func (m *invalidMetric) Write(*dto.Metric) error { return m.err }
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/metric_test.go b/vendor/github.com/prometheus/client_golang/prometheus/metric_test.go
new file mode 100644
index 000000000..7145f5e53
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/metric_test.go
@@ -0,0 +1,35 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import "testing"
+
+func TestBuildFQName(t *testing.T) {
+	scenarios := []struct{ namespace, subsystem, name, result string }{
+		{"a", "b", "c", "a_b_c"},
+		{"", "b", "c", "b_c"},
+		{"a", "", "c", "a_c"},
+		{"", "", "c", "c"},
+		{"a", "b", "", ""},
+		{"a", "", "", ""},
+		{"", "b", "", ""},
+		{" ", "", "", ""},
+	}
+
+	for i, s := range scenarios {
+		if want, got := s.result, BuildFQName(s.namespace, s.subsystem, s.name); want != got {
+			t.Errorf("%d. want %s, got %s", i, want, got)
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go b/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go
new file mode 100644
index 000000000..e31e62e78
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go
@@ -0,0 +1,142 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import "github.com/prometheus/procfs"
+
+type processCollector struct {
+	pid             int
+	collectFn       func(chan<- Metric)
+	pidFn           func() (int, error)
+	cpuTotal        Counter
+	openFDs, maxFDs Gauge
+	vsize, rss      Gauge
+	startTime       Gauge
+}
+
+// NewProcessCollector returns a collector which exports the current state of
+// process metrics including cpu, memory and file descriptor usage as well as
+// the process start time for the given process id under the given namespace.
+func NewProcessCollector(pid int, namespace string) Collector {
+	return NewProcessCollectorPIDFn(
+		func() (int, error) { return pid, nil },
+		namespace,
+	)
+}
+
+// NewProcessCollectorPIDFn returns a collector which exports the current state
+// of process metrics including cpu, memory and file descriptor usage as well
+// as the process start time under the given namespace. The given pidFn is
+// called on each collect and is used to determine the process to export
+// metrics for.
+func NewProcessCollectorPIDFn(
+	pidFn func() (int, error),
+	namespace string,
+) Collector {
+	c := processCollector{
+		pidFn:     pidFn,
+		collectFn: func(chan<- Metric) {},
+
+		cpuTotal: NewCounter(CounterOpts{
+			Namespace: namespace,
+			Name:      "process_cpu_seconds_total",
+			Help:      "Total user and system CPU time spent in seconds.",
+		}),
+		openFDs: NewGauge(GaugeOpts{
+			Namespace: namespace,
+			Name:      "process_open_fds",
+			Help:      "Number of open file descriptors.",
+		}),
+		maxFDs: NewGauge(GaugeOpts{
+			Namespace: namespace,
+			Name:      "process_max_fds",
+			Help:      "Maximum number of open file descriptors.",
+		}),
+		vsize: NewGauge(GaugeOpts{
+			Namespace: namespace,
+			Name:      "process_virtual_memory_bytes",
+			Help:      "Virtual memory size in bytes.",
+		}),
+		rss: NewGauge(GaugeOpts{
+			Namespace: namespace,
+			Name:      "process_resident_memory_bytes",
+			Help:      "Resident memory size in bytes.",
+		}),
+		startTime: NewGauge(GaugeOpts{
+			Namespace: namespace,
+			Name:      "process_start_time_seconds",
+			Help:      "Start time of the process since unix epoch in seconds.",
+		}),
+	}
+
+	// Set up process metric collection if supported by the runtime.
+	if _, err := procfs.NewStat(); err == nil {
+		c.collectFn = c.processCollect
+	}
+
+	return &c
+}
+
+// Describe returns all descriptions of the collector.
+func (c *processCollector) Describe(ch chan<- *Desc) {
+	ch <- c.cpuTotal.Desc()
+	ch <- c.openFDs.Desc()
+	ch <- c.maxFDs.Desc()
+	ch <- c.vsize.Desc()
+	ch <- c.rss.Desc()
+	ch <- c.startTime.Desc()
+}
+
+// Collect returns the current state of all metrics of the collector.
+func (c *processCollector) Collect(ch chan<- Metric) {
+	c.collectFn(ch)
+}
+
+// TODO(ts): Bring back error reporting by reverting 7faf9e7 as soon as the
+// client allows users to configure the error behavior.
+func (c *processCollector) processCollect(ch chan<- Metric) {
+	pid, err := c.pidFn()
+	if err != nil {
+		return
+	}
+
+	p, err := procfs.NewProc(pid)
+	if err != nil {
+		return
+	}
+
+	if stat, err := p.NewStat(); err == nil {
+		c.cpuTotal.Set(stat.CPUTime())
+		ch <- c.cpuTotal
+		c.vsize.Set(float64(stat.VirtualMemory()))
+		ch <- c.vsize
+		c.rss.Set(float64(stat.ResidentMemory()))
+		ch <- c.rss
+
+		if startTime, err := stat.StartTime(); err == nil {
+			c.startTime.Set(startTime)
+			ch <- c.startTime
+		}
+	}
+
+	if fds, err := p.FileDescriptorsLen(); err == nil {
+		c.openFDs.Set(float64(fds))
+		ch <- c.openFDs
+	}
+
+	if limits, err := p.NewLimits(); err == nil {
+		c.maxFDs.Set(float64(limits.OpenFiles))
+		ch <- c.maxFDs
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/process_collector_test.go b/vendor/github.com/prometheus/client_golang/prometheus/process_collector_test.go
new file mode 100644
index 000000000..d3362dae7
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/process_collector_test.go
@@ -0,0 +1,58 @@
+package prometheus
+
+import (
+	"bytes"
+	"os"
+	"regexp"
+	"testing"
+
+	"github.com/prometheus/common/expfmt"
+	"github.com/prometheus/procfs"
+)
+
+func TestProcessCollector(t *testing.T) {
+	if _, err := procfs.Self(); err != nil {
+		t.Skipf("skipping TestProcessCollector, procfs not available: %s", err)
+	}
+
+	registry := NewRegistry()
+	if err := registry.Register(NewProcessCollector(os.Getpid(), "")); err != nil {
+		t.Fatal(err)
+	}
+	if err := registry.Register(NewProcessCollectorPIDFn(
+		func() (int, error) { return os.Getpid(), nil }, "foobar"),
+	); err != nil {
+		t.Fatal(err)
+	}
+
+	mfs, err := registry.Gather()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	var buf bytes.Buffer
+	for _, mf := range mfs {
+		if _, err := expfmt.MetricFamilyToText(&buf, mf); err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	for _, re := range []*regexp.Regexp{
+		regexp.MustCompile("process_cpu_seconds_total [0-9]"),
+		regexp.MustCompile("process_max_fds [1-9]"),
+		regexp.MustCompile("process_open_fds [1-9]"),
+		regexp.MustCompile("process_virtual_memory_bytes [1-9]"),
+		regexp.MustCompile("process_resident_memory_bytes [1-9]"),
+		regexp.MustCompile("process_start_time_seconds [0-9.]{10,}"),
+		regexp.MustCompile("foobar_process_cpu_seconds_total [0-9]"),
+		regexp.MustCompile("foobar_process_max_fds [1-9]"),
+		regexp.MustCompile("foobar_process_open_fds [1-9]"),
+		regexp.MustCompile("foobar_process_virtual_memory_bytes [1-9]"),
+		regexp.MustCompile("foobar_process_resident_memory_bytes [1-9]"),
+		regexp.MustCompile("foobar_process_start_time_seconds [0-9.]{10,}"),
+	} {
+		if !re.Match(buf.Bytes()) {
+			t.Errorf("want body to match %s\n%s", re, buf.String())
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go
new file mode 100644
index 000000000..b6dd5a266
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go
@@ -0,0 +1,201 @@
+// Copyright 2016 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Copyright (c) 2013, The Prometheus Authors
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be found
+// in the LICENSE file.
+
+// Package promhttp contains functions to create http.Handler instances to
+// expose Prometheus metrics via HTTP. In later versions of this package, it
+// will also contain tooling to instrument instances of http.Handler and
+// http.RoundTripper.
+//
+// promhttp.Handler acts on the prometheus.DefaultGatherer. With HandlerFor,
+// you can create a handler for a custom registry or anything that implements
+// the Gatherer interface. It also allows to create handlers that act
+// differently on errors or allow to log errors.
+package promhttp
+
+import (
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"sync"
+
+	"github.com/prometheus/common/expfmt"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+const (
+	contentTypeHeader     = "Content-Type"
+	contentLengthHeader   = "Content-Length"
+	contentEncodingHeader = "Content-Encoding"
+	acceptEncodingHeader  = "Accept-Encoding"
+)
+
+var bufPool sync.Pool
+
+func getBuf() *bytes.Buffer {
+	buf := bufPool.Get()
+	if buf == nil {
+		return &bytes.Buffer{}
+	}
+	return buf.(*bytes.Buffer)
+}
+
+func giveBuf(buf *bytes.Buffer) {
+	buf.Reset()
+	bufPool.Put(buf)
+}
+
+// Handler returns an HTTP handler for the prometheus.DefaultGatherer. The
+// Handler uses the default HandlerOpts, i.e. report the first error as an HTTP
+// error, no error logging, and compression if requested by the client.
+//
+// If you want to create a Handler for the DefaultGatherer with different
+// HandlerOpts, create it with HandlerFor with prometheus.DefaultGatherer and
+// your desired HandlerOpts.
+func Handler() http.Handler {
+	return HandlerFor(prometheus.DefaultGatherer, HandlerOpts{})
+}
+
+// HandlerFor returns an http.Handler for the provided Gatherer. The behavior
+// of the Handler is defined by the provided HandlerOpts.
+func HandlerFor(reg prometheus.Gatherer, opts HandlerOpts) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+		mfs, err := reg.Gather()
+		if err != nil {
+			if opts.ErrorLog != nil {
+				opts.ErrorLog.Println("error gathering metrics:", err)
+			}
+			switch opts.ErrorHandling {
+			case PanicOnError:
+				panic(err)
+			case ContinueOnError:
+				if len(mfs) == 0 {
+					http.Error(w, "No metrics gathered, last error:\n\n"+err.Error(), http.StatusInternalServerError)
+					return
+				}
+			case HTTPErrorOnError:
+				http.Error(w, "An error has occurred during metrics gathering:\n\n"+err.Error(), http.StatusInternalServerError)
+				return
+			}
+		}
+
+		contentType := expfmt.Negotiate(req.Header)
+		buf := getBuf()
+		defer giveBuf(buf)
+		writer, encoding := decorateWriter(req, buf, opts.DisableCompression)
+		enc := expfmt.NewEncoder(writer, contentType)
+		var lastErr error
+		for _, mf := range mfs {
+			if err := enc.Encode(mf); err != nil {
+				lastErr = err
+				if opts.ErrorLog != nil {
+					opts.ErrorLog.Println("error encoding metric family:", err)
+				}
+				switch opts.ErrorHandling {
+				case PanicOnError:
+					panic(err)
+				case ContinueOnError:
+					// Handled later.
+				case HTTPErrorOnError:
+					http.Error(w, "An error has occurred during metrics encoding:\n\n"+err.Error(), http.StatusInternalServerError)
+					return
+				}
+			}
+		}
+		if closer, ok := writer.(io.Closer); ok {
+			closer.Close()
+		}
+		if lastErr != nil && buf.Len() == 0 {
+			http.Error(w, "No metrics encoded, last error:\n\n"+err.Error(), http.StatusInternalServerError)
+			return
+		}
+		header := w.Header()
+		header.Set(contentTypeHeader, string(contentType))
+		header.Set(contentLengthHeader, fmt.Sprint(buf.Len()))
+		if encoding != "" {
+			header.Set(contentEncodingHeader, encoding)
+		}
+		w.Write(buf.Bytes())
+		// TODO(beorn7): Consider streaming serving of metrics.
+	})
+}
+
+// HandlerErrorHandling defines how a Handler serving metrics will handle
+// errors.
+type HandlerErrorHandling int
+
+// These constants cause handlers serving metrics to behave as described if
+// errors are encountered.
+const (
+	// Serve an HTTP status code 500 upon the first error
+	// encountered. Report the error message in the body.
+	HTTPErrorOnError HandlerErrorHandling = iota
+	// Ignore errors and try to serve as many metrics as possible.  However,
+	// if no metrics can be served, serve an HTTP status code 500 and the
+	// last error message in the body. Only use this in deliberate "best
+	// effort" metrics collection scenarios. It is recommended to at least
+	// log errors (by providing an ErrorLog in HandlerOpts) to not mask
+	// errors completely.
+	ContinueOnError
+	// Panic upon the first error encountered (useful for "crash only" apps).
+	PanicOnError
+)
+
+// Logger is the minimal interface HandlerOpts needs for logging. Note that
+// log.Logger from the standard library implements this interface, and it is
+// easy to implement by custom loggers, if they don't do so already anyway.
+type Logger interface {
+	Println(v ...interface{})
+}
+
+// HandlerOpts specifies options how to serve metrics via an http.Handler. The
+// zero value of HandlerOpts is a reasonable default.
+type HandlerOpts struct {
+	// ErrorLog specifies an optional logger for errors collecting and
+	// serving metrics. If nil, errors are not logged at all.
+	ErrorLog Logger
+	// ErrorHandling defines how errors are handled. Note that errors are
+	// logged regardless of the configured ErrorHandling provided ErrorLog
+	// is not nil.
+	ErrorHandling HandlerErrorHandling
+	// If DisableCompression is true, the handler will never compress the
+	// response, even if requested by the client.
+	DisableCompression bool
+}
+
+// decorateWriter wraps a writer to handle gzip compression if requested.  It
+// returns the decorated writer and the appropriate "Content-Encoding" header
+// (which is empty if no compression is enabled).
+func decorateWriter(request *http.Request, writer io.Writer, compressionDisabled bool) (io.Writer, string) {
+	if compressionDisabled {
+		return writer, ""
+	}
+	header := request.Header.Get(acceptEncodingHeader)
+	parts := strings.Split(header, ",")
+	for _, part := range parts {
+		part := strings.TrimSpace(part)
+		if part == "gzip" || strings.HasPrefix(part, "gzip;") {
+			return gzip.NewWriter(writer), "gzip"
+		}
+	}
+	return writer, ""
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http_test.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http_test.go
new file mode 100644
index 000000000..d4a7d4a7b
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http_test.go
@@ -0,0 +1,137 @@
+// Copyright 2016 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Copyright (c) 2013, The Prometheus Authors
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be found
+// in the LICENSE file.
+
+package promhttp
+
+import (
+	"bytes"
+	"errors"
+	"log"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+type errorCollector struct{}
+
+func (e errorCollector) Describe(ch chan<- *prometheus.Desc) {
+	ch <- prometheus.NewDesc("invalid_metric", "not helpful", nil, nil)
+}
+
+func (e errorCollector) Collect(ch chan<- prometheus.Metric) {
+	ch <- prometheus.NewInvalidMetric(
+		prometheus.NewDesc("invalid_metric", "not helpful", nil, nil),
+		errors.New("collect error"),
+	)
+}
+
+func TestHandlerErrorHandling(t *testing.T) {
+
+	// Create a registry that collects a MetricFamily with two elements,
+	// another with one, and reports an error.
+	reg := prometheus.NewRegistry()
+
+	cnt := prometheus.NewCounter(prometheus.CounterOpts{
+		Name: "the_count",
+		Help: "Ah-ah-ah! Thunder and lightning!",
+	})
+	reg.MustRegister(cnt)
+
+	cntVec := prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name:        "name",
+			Help:        "docstring",
+			ConstLabels: prometheus.Labels{"constname": "constvalue"},
+		},
+		[]string{"labelname"},
+	)
+	cntVec.WithLabelValues("val1").Inc()
+	cntVec.WithLabelValues("val2").Inc()
+	reg.MustRegister(cntVec)
+
+	reg.MustRegister(errorCollector{})
+
+	logBuf := &bytes.Buffer{}
+	logger := log.New(logBuf, "", 0)
+
+	writer := httptest.NewRecorder()
+	request, _ := http.NewRequest("GET", "/", nil)
+	request.Header.Add("Accept", "test/plain")
+
+	errorHandler := HandlerFor(reg, HandlerOpts{
+		ErrorLog:      logger,
+		ErrorHandling: HTTPErrorOnError,
+	})
+	continueHandler := HandlerFor(reg, HandlerOpts{
+		ErrorLog:      logger,
+		ErrorHandling: ContinueOnError,
+	})
+	panicHandler := HandlerFor(reg, HandlerOpts{
+		ErrorLog:      logger,
+		ErrorHandling: PanicOnError,
+	})
+	wantMsg := `error gathering metrics: error collecting metric Desc{fqName: "invalid_metric", help: "not helpful", constLabels: {}, variableLabels: []}: collect error
+`
+	wantErrorBody := `An error has occurred during metrics gathering:
+
+error collecting metric Desc{fqName: "invalid_metric", help: "not helpful", constLabels: {}, variableLabels: []}: collect error
+`
+	wantOKBody := `# HELP name docstring
+# TYPE name counter
+name{constname="constvalue",labelname="val1"} 1
+name{constname="constvalue",labelname="val2"} 1
+# HELP the_count Ah-ah-ah! Thunder and lightning!
+# TYPE the_count counter
+the_count 0
+`
+
+	errorHandler.ServeHTTP(writer, request)
+	if got, want := writer.Code, http.StatusInternalServerError; got != want {
+		t.Errorf("got HTTP status code %d, want %d", got, want)
+	}
+	if got := logBuf.String(); got != wantMsg {
+		t.Errorf("got log message:\n%s\nwant log mesage:\n%s\n", got, wantMsg)
+	}
+	if got := writer.Body.String(); got != wantErrorBody {
+		t.Errorf("got body:\n%s\nwant body:\n%s\n", got, wantErrorBody)
+	}
+	logBuf.Reset()
+	writer.Body.Reset()
+	writer.Code = http.StatusOK
+
+	continueHandler.ServeHTTP(writer, request)
+	if got, want := writer.Code, http.StatusOK; got != want {
+		t.Errorf("got HTTP status code %d, want %d", got, want)
+	}
+	if got := logBuf.String(); got != wantMsg {
+		t.Errorf("got log message %q, want %q", got, wantMsg)
+	}
+	if got := writer.Body.String(); got != wantOKBody {
+		t.Errorf("got body %q, want %q", got, wantOKBody)
+	}
+
+	defer func() {
+		if err := recover(); err == nil {
+			t.Error("expected panic from panicHandler")
+		}
+	}()
+	panicHandler.ServeHTTP(writer, request)
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/push/examples_test.go b/vendor/github.com/prometheus/client_golang/prometheus/push/examples_test.go
new file mode 100644
index 000000000..7f17ca291
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/push/examples_test.go
@@ -0,0 +1,56 @@
+// Copyright 2016 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package push_test
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/push"
+)
+
+func ExampleCollectors() {
+	completionTime := prometheus.NewGauge(prometheus.GaugeOpts{
+		Name: "db_backup_last_completion_timestamp_seconds",
+		Help: "The timestamp of the last succesful completion of a DB backup.",
+	})
+	completionTime.Set(float64(time.Now().Unix()))
+	if err := push.Collectors(
+		"db_backup", push.HostnameGroupingKey(),
+		"http://pushgateway:9091",
+		completionTime,
+	); err != nil {
+		fmt.Println("Could not push completion time to Pushgateway:", err)
+	}
+}
+
+func ExampleRegistry() {
+	registry := prometheus.NewRegistry()
+
+	completionTime := prometheus.NewGauge(prometheus.GaugeOpts{
+		Name: "db_backup_last_completion_timestamp_seconds",
+		Help: "The timestamp of the last succesful completion of a DB backup.",
+	})
+	registry.MustRegister(completionTime)
+
+	completionTime.Set(float64(time.Now().Unix()))
+	if err := push.FromGatherer(
+		"db_backup", push.HostnameGroupingKey(),
+		"http://pushgateway:9091",
+		registry,
+	); err != nil {
+		fmt.Println("Could not push completion time to Pushgateway:", err)
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/push/push.go b/vendor/github.com/prometheus/client_golang/prometheus/push/push.go
new file mode 100644
index 000000000..ae40402f8
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/push/push.go
@@ -0,0 +1,172 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Copyright (c) 2013, The Prometheus Authors
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be found
+// in the LICENSE file.
+
+// Package push provides functions to push metrics to a Pushgateway. The metrics
+// to push are either collected from a provided registry, or from explicitly
+// listed collectors.
+//
+// See the documentation of the Pushgateway to understand the meaning of the
+// grouping parameters and the differences between push.Registry and
+// push.Collectors on the one hand and push.AddRegistry and push.AddCollectors
+// on the other hand: https://github.com/prometheus/pushgateway
+package push
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"os"
+	"strings"
+
+	"github.com/prometheus/common/expfmt"
+	"github.com/prometheus/common/model"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+const contentTypeHeader = "Content-Type"
+
+// FromGatherer triggers a metric collection by the provided Gatherer (which is
+// usually implemented by a prometheus.Registry) and pushes all gathered metrics
+// to the Pushgateway specified by url, using the provided job name and the
+// (optional) further grouping labels (the grouping map may be nil). See the
+// Pushgateway documentation for detailed implications of the job and other
+// grouping labels. Neither the job name nor any grouping label value may
+// contain a "/". The metrics pushed must not contain a job label of their own
+// nor any of the grouping labels.
+//
+// You can use just host:port or ip:port as url, in which case 'http://' is
+// added automatically. You can also include the schema in the URL. However, do
+// not include the '/metrics/jobs/...' part.
+//
+// Note that all previously pushed metrics with the same job and other grouping
+// labels will be replaced with the metrics pushed by this call. (It uses HTTP
+// method 'PUT' to push to the Pushgateway.)
+func FromGatherer(job string, grouping map[string]string, url string, g prometheus.Gatherer) error {
+	return push(job, grouping, url, g, "PUT")
+}
+
+// AddFromGatherer works like FromGatherer, but only previously pushed metrics
+// with the same name (and the same job and other grouping labels) will be
+// replaced. (It uses HTTP method 'POST' to push to the Pushgateway.)
+func AddFromGatherer(job string, grouping map[string]string, url string, g prometheus.Gatherer) error {
+	return push(job, grouping, url, g, "POST")
+}
+
+func push(job string, grouping map[string]string, pushURL string, g prometheus.Gatherer, method string) error {
+	if !strings.Contains(pushURL, "://") {
+		pushURL = "http://" + pushURL
+	}
+	if strings.HasSuffix(pushURL, "/") {
+		pushURL = pushURL[:len(pushURL)-1]
+	}
+
+	if strings.Contains(job, "/") {
+		return fmt.Errorf("job contains '/': %s", job)
+	}
+	urlComponents := []string{url.QueryEscape(job)}
+	for ln, lv := range grouping {
+		if !model.LabelNameRE.MatchString(ln) {
+			return fmt.Errorf("grouping label has invalid name: %s", ln)
+		}
+		if strings.Contains(lv, "/") {
+			return fmt.Errorf("value of grouping label %s contains '/': %s", ln, lv)
+		}
+		urlComponents = append(urlComponents, ln, lv)
+	}
+	pushURL = fmt.Sprintf("%s/metrics/job/%s", pushURL, strings.Join(urlComponents, "/"))
+
+	mfs, err := g.Gather()
+	if err != nil {
+		return err
+	}
+	buf := &bytes.Buffer{}
+	enc := expfmt.NewEncoder(buf, expfmt.FmtProtoDelim)
+	// Check for pre-existing grouping labels:
+	for _, mf := range mfs {
+		for _, m := range mf.GetMetric() {
+			for _, l := range m.GetLabel() {
+				if l.GetName() == "job" {
+					return fmt.Errorf("pushed metric %s (%s) already contains a job label", mf.GetName(), m)
+				}
+				if _, ok := grouping[l.GetName()]; ok {
+					return fmt.Errorf(
+						"pushed metric %s (%s) already contains grouping label %s",
+						mf.GetName(), m, l.GetName(),
+					)
+				}
+			}
+		}
+		enc.Encode(mf)
+	}
+	req, err := http.NewRequest(method, pushURL, buf)
+	if err != nil {
+		return err
+	}
+	req.Header.Set(contentTypeHeader, string(expfmt.FmtProtoDelim))
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != 202 {
+		body, _ := ioutil.ReadAll(resp.Body) // Ignore any further error as this is for an error message only.
+		return fmt.Errorf("unexpected status code %d while pushing to %s: %s", resp.StatusCode, pushURL, body)
+	}
+	return nil
+}
+
+// Collectors works like FromGatherer, but it does not use a Gatherer. Instead,
+// it collects from the provided collectors directly. It is a convenient way to
+// push only a few metrics.
+func Collectors(job string, grouping map[string]string, url string, collectors ...prometheus.Collector) error {
+	return pushCollectors(job, grouping, url, "PUT", collectors...)
+}
+
+// AddCollectors works like AddFromGatherer, but it does not use a Gatherer.
+// Instead, it collects from the provided collectors directly. It is a
+// convenient way to push only a few metrics.
+func AddCollectors(job string, grouping map[string]string, url string, collectors ...prometheus.Collector) error {
+	return pushCollectors(job, grouping, url, "POST", collectors...)
+}
+
+func pushCollectors(job string, grouping map[string]string, url, method string, collectors ...prometheus.Collector) error {
+	r := prometheus.NewRegistry()
+	for _, collector := range collectors {
+		if err := r.Register(collector); err != nil {
+			return err
+		}
+	}
+	return push(job, grouping, url, r, method)
+}
+
+// HostnameGroupingKey returns a label map with the only entry
+// {instance="<hostname>"}. This can be conveniently used as the grouping
+// parameter if metrics should be pushed with the hostname as label. The
+// returned map is created upon each call so that the caller is free to add more
+// labels to the map.
+func HostnameGroupingKey() map[string]string {
+	hostname, err := os.Hostname()
+	if err != nil {
+		return map[string]string{"instance": "unknown"}
+	}
+	return map[string]string{"instance": hostname}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/push/push_test.go b/vendor/github.com/prometheus/client_golang/prometheus/push/push_test.go
new file mode 100644
index 000000000..28ed9b74b
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/push/push_test.go
@@ -0,0 +1,176 @@
+// Copyright 2016 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Copyright (c) 2013, The Prometheus Authors
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be found
+// in the LICENSE file.
+
+package push
+
+import (
+	"bytes"
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"testing"
+
+	"github.com/prometheus/common/expfmt"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+func TestPush(t *testing.T) {
+
+	var (
+		lastMethod string
+		lastBody   []byte
+		lastPath   string
+	)
+
+	host, err := os.Hostname()
+	if err != nil {
+		t.Error(err)
+	}
+
+	// Fake a Pushgateway that always responds with 202.
+	pgwOK := httptest.NewServer(
+		http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			lastMethod = r.Method
+			var err error
+			lastBody, err = ioutil.ReadAll(r.Body)
+			if err != nil {
+				t.Fatal(err)
+			}
+			lastPath = r.URL.EscapedPath()
+			w.Header().Set("Content-Type", `text/plain; charset=utf-8`)
+			w.WriteHeader(http.StatusAccepted)
+		}),
+	)
+	defer pgwOK.Close()
+
+	// Fake a Pushgateway that always responds with 500.
+	pgwErr := httptest.NewServer(
+		http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			http.Error(w, "fake error", http.StatusInternalServerError)
+		}),
+	)
+	defer pgwErr.Close()
+
+	metric1 := prometheus.NewCounter(prometheus.CounterOpts{
+		Name: "testname1",
+		Help: "testhelp1",
+	})
+	metric2 := prometheus.NewGauge(prometheus.GaugeOpts{
+		Name:        "testname2",
+		Help:        "testhelp2",
+		ConstLabels: prometheus.Labels{"foo": "bar", "dings": "bums"},
+	})
+
+	reg := prometheus.NewRegistry()
+	reg.MustRegister(metric1)
+	reg.MustRegister(metric2)
+
+	mfs, err := reg.Gather()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	buf := &bytes.Buffer{}
+	enc := expfmt.NewEncoder(buf, expfmt.FmtProtoDelim)
+
+	for _, mf := range mfs {
+		if err := enc.Encode(mf); err != nil {
+			t.Fatal(err)
+		}
+	}
+	wantBody := buf.Bytes()
+
+	// PushCollectors, all good.
+	if err := Collectors("testjob", HostnameGroupingKey(), pgwOK.URL, metric1, metric2); err != nil {
+		t.Fatal(err)
+	}
+	if lastMethod != "PUT" {
+		t.Error("want method PUT for PushCollectors, got", lastMethod)
+	}
+	if bytes.Compare(lastBody, wantBody) != 0 {
+		t.Errorf("got body %v, want %v", lastBody, wantBody)
+	}
+	if lastPath != "/metrics/job/testjob/instance/"+host {
+		t.Error("unexpected path:", lastPath)
+	}
+
+	// PushAddCollectors, with nil grouping, all good.
+	if err := AddCollectors("testjob", nil, pgwOK.URL, metric1, metric2); err != nil {
+		t.Fatal(err)
+	}
+	if lastMethod != "POST" {
+		t.Error("want method POST for PushAddCollectors, got", lastMethod)
+	}
+	if bytes.Compare(lastBody, wantBody) != 0 {
+		t.Errorf("got body %v, want %v", lastBody, wantBody)
+	}
+	if lastPath != "/metrics/job/testjob" {
+		t.Error("unexpected path:", lastPath)
+	}
+
+	// PushCollectors with a broken PGW.
+	if err := Collectors("testjob", nil, pgwErr.URL, metric1, metric2); err == nil {
+		t.Error("push to broken Pushgateway succeeded")
+	} else {
+		if got, want := err.Error(), "unexpected status code 500 while pushing to "+pgwErr.URL+"/metrics/job/testjob: fake error\n"; got != want {
+			t.Errorf("got error %q, want %q", got, want)
+		}
+	}
+
+	// PushCollectors with invalid grouping or job.
+	if err := Collectors("testjob", map[string]string{"foo": "bums"}, pgwErr.URL, metric1, metric2); err == nil {
+		t.Error("push with grouping contained in metrics succeeded")
+	}
+	if err := Collectors("test/job", nil, pgwErr.URL, metric1, metric2); err == nil {
+		t.Error("push with invalid job value succeeded")
+	}
+	if err := Collectors("testjob", map[string]string{"foo/bar": "bums"}, pgwErr.URL, metric1, metric2); err == nil {
+		t.Error("push with invalid grouping succeeded")
+	}
+	if err := Collectors("testjob", map[string]string{"foo-bar": "bums"}, pgwErr.URL, metric1, metric2); err == nil {
+		t.Error("push with invalid grouping succeeded")
+	}
+
+	// Push registry, all good.
+	if err := FromGatherer("testjob", HostnameGroupingKey(), pgwOK.URL, reg); err != nil {
+		t.Fatal(err)
+	}
+	if lastMethod != "PUT" {
+		t.Error("want method PUT for Push, got", lastMethod)
+	}
+	if bytes.Compare(lastBody, wantBody) != 0 {
+		t.Errorf("got body %v, want %v", lastBody, wantBody)
+	}
+
+	// PushAdd registry, all good.
+	if err := AddFromGatherer("testjob", map[string]string{"a": "x", "b": "y"}, pgwOK.URL, reg); err != nil {
+		t.Fatal(err)
+	}
+	if lastMethod != "POST" {
+		t.Error("want method POSTT for PushAdd, got", lastMethod)
+	}
+	if bytes.Compare(lastBody, wantBody) != 0 {
+		t.Errorf("got body %v, want %v", lastBody, wantBody)
+	}
+	if lastPath != "/metrics/job/testjob/a/x/b/y" && lastPath != "/metrics/job/testjob/b/y/a/x" {
+		t.Error("unexpected path:", lastPath)
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/registry.go b/vendor/github.com/prometheus/client_golang/prometheus/registry.go
new file mode 100644
index 000000000..32a3986b0
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/registry.go
@@ -0,0 +1,806 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"os"
+	"sort"
+	"sync"
+
+	"github.com/golang/protobuf/proto"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+const (
+	// Capacity for the channel to collect metrics and descriptors.
+	capMetricChan = 1000
+	capDescChan   = 10
+)
+
+// DefaultRegisterer and DefaultGatherer are the implementations of the
+// Registerer and Gatherer interface a number of convenience functions in this
+// package act on. Initially, both variables point to the same Registry, which
+// has a process collector (see NewProcessCollector) and a Go collector (see
+// NewGoCollector) already registered. This approach to keep default instances
+// as global state mirrors the approach of other packages in the Go standard
+// library. Note that there are caveats. Change the variables with caution and
+// only if you understand the consequences. Users who want to avoid global state
+// altogether should not use the convenience function and act on custom
+// instances instead.
+var (
+	defaultRegistry              = NewRegistry()
+	DefaultRegisterer Registerer = defaultRegistry
+	DefaultGatherer   Gatherer   = defaultRegistry
+)
+
+func init() {
+	MustRegister(NewProcessCollector(os.Getpid(), ""))
+	MustRegister(NewGoCollector())
+}
+
+// NewRegistry creates a new vanilla Registry without any Collectors
+// pre-registered.
+func NewRegistry() *Registry {
+	return &Registry{
+		collectorsByID:  map[uint64]Collector{},
+		descIDs:         map[uint64]struct{}{},
+		dimHashesByName: map[string]uint64{},
+	}
+}
+
+// NewPedanticRegistry returns a registry that checks during collection if each
+// collected Metric is consistent with its reported Desc, and if the Desc has
+// actually been registered with the registry.
+//
+// Usually, a Registry will be happy as long as the union of all collected
+// Metrics is consistent and valid even if some metrics are not consistent with
+// their own Desc or a Desc provided by their registered Collector. Well-behaved
+// Collectors and Metrics will only provide consistent Descs. This Registry is
+// useful to test the implementation of Collectors and Metrics.
+func NewPedanticRegistry() *Registry {
+	r := NewRegistry()
+	r.pedanticChecksEnabled = true
+	return r
+}
+
+// Registerer is the interface for the part of a registry in charge of
+// registering and unregistering. Users of custom registries should use
+// Registerer as type for registration purposes (rather then the Registry type
+// directly). In that way, they are free to use custom Registerer implementation
+// (e.g. for testing purposes).
+type Registerer interface {
+	// Register registers a new Collector to be included in metrics
+	// collection. It returns an error if the descriptors provided by the
+	// Collector are invalid or if they — in combination with descriptors of
+	// already registered Collectors — do not fulfill the consistency and
+	// uniqueness criteria described in the documentation of metric.Desc.
+	//
+	// If the provided Collector is equal to a Collector already registered
+	// (which includes the case of re-registering the same Collector), the
+	// returned error is an instance of AlreadyRegisteredError, which
+	// contains the previously registered Collector.
+	//
+	// It is in general not safe to register the same Collector multiple
+	// times concurrently.
+	Register(Collector) error
+	// MustRegister works like Register but registers any number of
+	// Collectors and panics upon the first registration that causes an
+	// error.
+	MustRegister(...Collector)
+	// Unregister unregisters the Collector that equals the Collector passed
+	// in as an argument.  (Two Collectors are considered equal if their
+	// Describe method yields the same set of descriptors.) The function
+	// returns whether a Collector was unregistered.
+	//
+	// Note that even after unregistering, it will not be possible to
+	// register a new Collector that is inconsistent with the unregistered
+	// Collector, e.g. a Collector collecting metrics with the same name but
+	// a different help string. The rationale here is that the same registry
+	// instance must only collect consistent metrics throughout its
+	// lifetime.
+	Unregister(Collector) bool
+}
+
+// Gatherer is the interface for the part of a registry in charge of gathering
+// the collected metrics into a number of MetricFamilies. The Gatherer interface
+// comes with the same general implication as described for the Registerer
+// interface.
+type Gatherer interface {
+	// Gather calls the Collect method of the registered Collectors and then
+	// gathers the collected metrics into a lexicographically sorted slice
+	// of MetricFamily protobufs. Even if an error occurs, Gather attempts
+	// to gather as many metrics as possible. Hence, if a non-nil error is
+	// returned, the returned MetricFamily slice could be nil (in case of a
+	// fatal error that prevented any meaningful metric collection) or
+	// contain a number of MetricFamily protobufs, some of which might be
+	// incomplete, and some might be missing altogether. The returned error
+	// (which might be a MultiError) explains the details. In scenarios
+	// where complete collection is critical, the returned MetricFamily
+	// protobufs should be disregarded if the returned error is non-nil.
+	Gather() ([]*dto.MetricFamily, error)
+}
+
+// Register registers the provided Collector with the DefaultRegisterer.
+//
+// Register is a shortcut for DefaultRegisterer.Register(c). See there for more
+// details.
+func Register(c Collector) error {
+	return DefaultRegisterer.Register(c)
+}
+
+// MustRegister registers the provided Collectors with the DefaultRegisterer and
+// panics if any error occurs.
+//
+// MustRegister is a shortcut for DefaultRegisterer.MustRegister(cs...). See
+// there for more details.
+func MustRegister(cs ...Collector) {
+	DefaultRegisterer.MustRegister(cs...)
+}
+
+// RegisterOrGet registers the provided Collector with the DefaultRegisterer and
+// returns the Collector, unless an equal Collector was registered before, in
+// which case that Collector is returned.
+//
+// Deprecated: RegisterOrGet is merely a convenience function for the
+// implementation as described in the documentation for
+// AlreadyRegisteredError. As the use case is relatively rare, this function
+// will be removed in a future version of this package to clean up the
+// namespace.
+func RegisterOrGet(c Collector) (Collector, error) {
+	if err := Register(c); err != nil {
+		if are, ok := err.(AlreadyRegisteredError); ok {
+			return are.ExistingCollector, nil
+		}
+		return nil, err
+	}
+	return c, nil
+}
+
+// MustRegisterOrGet behaves like RegisterOrGet but panics instead of returning
+// an error.
+//
+// Deprecated: This is deprecated for the same reason RegisterOrGet is. See
+// there for details.
+func MustRegisterOrGet(c Collector) Collector {
+	c, err := RegisterOrGet(c)
+	if err != nil {
+		panic(err)
+	}
+	return c
+}
+
+// Unregister removes the registration of the provided Collector from the
+// DefaultRegisterer.
+//
+// Unregister is a shortcut for DefaultRegisterer.Unregister(c). See there for
+// more details.
+func Unregister(c Collector) bool {
+	return DefaultRegisterer.Unregister(c)
+}
+
+// GathererFunc turns a function into a Gatherer.
+type GathererFunc func() ([]*dto.MetricFamily, error)
+
+// Gather implements Gatherer.
+func (gf GathererFunc) Gather() ([]*dto.MetricFamily, error) {
+	return gf()
+}
+
+// SetMetricFamilyInjectionHook replaces the DefaultGatherer with one that
+// gathers from the previous DefaultGatherers but then merges the MetricFamily
+// protobufs returned from the provided hook function with the MetricFamily
+// protobufs returned from the original DefaultGatherer.
+//
+// Deprecated: This function manipulates the DefaultGatherer variable. Consider
+// the implications, i.e. don't do this concurrently with any uses of the
+// DefaultGatherer. In the rare cases where you need to inject MetricFamily
+// protobufs directly, it is recommended to use a custom Registry and combine it
+// with a custom Gatherer using the Gatherers type (see
+// there). SetMetricFamilyInjectionHook only exists for compatibility reasons
+// with previous versions of this package.
+func SetMetricFamilyInjectionHook(hook func() []*dto.MetricFamily) {
+	DefaultGatherer = Gatherers{
+		DefaultGatherer,
+		GathererFunc(func() ([]*dto.MetricFamily, error) { return hook(), nil }),
+	}
+}
+
+// AlreadyRegisteredError is returned by the Register method if the Collector to
+// be registered has already been registered before, or a different Collector
+// that collects the same metrics has been registered before. Registration fails
+// in that case, but you can detect from the kind of error what has
+// happened. The error contains fields for the existing Collector and the
+// (rejected) new Collector that equals the existing one. This can be used to
+// find out if an equal Collector has been registered before and switch over to
+// using the old one, as demonstrated in the example.
+type AlreadyRegisteredError struct {
+	ExistingCollector, NewCollector Collector
+}
+
+func (err AlreadyRegisteredError) Error() string {
+	return "duplicate metrics collector registration attempted"
+}
+
+// MultiError is a slice of errors implementing the error interface. It is used
+// by a Gatherer to report multiple errors during MetricFamily gathering.
+type MultiError []error
+
+func (errs MultiError) Error() string {
+	if len(errs) == 0 {
+		return ""
+	}
+	buf := &bytes.Buffer{}
+	fmt.Fprintf(buf, "%d error(s) occurred:", len(errs))
+	for _, err := range errs {
+		fmt.Fprintf(buf, "\n* %s", err)
+	}
+	return buf.String()
+}
+
+// MaybeUnwrap returns nil if len(errs) is 0. It returns the first and only
+// contained error as error if len(errs is 1). In all other cases, it returns
+// the MultiError directly. This is helpful for returning a MultiError in a way
+// that only uses the MultiError if needed.
+func (errs MultiError) MaybeUnwrap() error {
+	switch len(errs) {
+	case 0:
+		return nil
+	case 1:
+		return errs[0]
+	default:
+		return errs
+	}
+}
+
+// Registry registers Prometheus collectors, collects their metrics, and gathers
+// them into MetricFamilies for exposition. It implements both Registerer and
+// Gatherer. The zero value is not usable. Create instances with NewRegistry or
+// NewPedanticRegistry.
+type Registry struct {
+	mtx                   sync.RWMutex
+	collectorsByID        map[uint64]Collector // ID is a hash of the descIDs.
+	descIDs               map[uint64]struct{}
+	dimHashesByName       map[string]uint64
+	pedanticChecksEnabled bool
+}
+
+// Register implements Registerer.
+func (r *Registry) Register(c Collector) error {
+	var (
+		descChan           = make(chan *Desc, capDescChan)
+		newDescIDs         = map[uint64]struct{}{}
+		newDimHashesByName = map[string]uint64{}
+		collectorID        uint64 // Just a sum of all desc IDs.
+		duplicateDescErr   error
+	)
+	go func() {
+		c.Describe(descChan)
+		close(descChan)
+	}()
+	r.mtx.Lock()
+	defer r.mtx.Unlock()
+	// Coduct various tests...
+	for desc := range descChan {
+
+		// Is the descriptor valid at all?
+		if desc.err != nil {
+			return fmt.Errorf("descriptor %s is invalid: %s", desc, desc.err)
+		}
+
+		// Is the descID unique?
+		// (In other words: Is the fqName + constLabel combination unique?)
+		if _, exists := r.descIDs[desc.id]; exists {
+			duplicateDescErr = fmt.Errorf("descriptor %s already exists with the same fully-qualified name and const label values", desc)
+		}
+		// If it is not a duplicate desc in this collector, add it to
+		// the collectorID.  (We allow duplicate descs within the same
+		// collector, but their existence must be a no-op.)
+		if _, exists := newDescIDs[desc.id]; !exists {
+			newDescIDs[desc.id] = struct{}{}
+			collectorID += desc.id
+		}
+
+		// Are all the label names and the help string consistent with
+		// previous descriptors of the same name?
+		// First check existing descriptors...
+		if dimHash, exists := r.dimHashesByName[desc.fqName]; exists {
+			if dimHash != desc.dimHash {
+				return fmt.Errorf("a previously registered descriptor with the same fully-qualified name as %s has different label names or a different help string", desc)
+			}
+		} else {
+			// ...then check the new descriptors already seen.
+			if dimHash, exists := newDimHashesByName[desc.fqName]; exists {
+				if dimHash != desc.dimHash {
+					return fmt.Errorf("descriptors reported by collector have inconsistent label names or help strings for the same fully-qualified name, offender is %s", desc)
+				}
+			} else {
+				newDimHashesByName[desc.fqName] = desc.dimHash
+			}
+		}
+	}
+	// Did anything happen at all?
+	if len(newDescIDs) == 0 {
+		return errors.New("collector has no descriptors")
+	}
+	if existing, exists := r.collectorsByID[collectorID]; exists {
+		return AlreadyRegisteredError{
+			ExistingCollector: existing,
+			NewCollector:      c,
+		}
+	}
+	// If the collectorID is new, but at least one of the descs existed
+	// before, we are in trouble.
+	if duplicateDescErr != nil {
+		return duplicateDescErr
+	}
+
+	// Only after all tests have passed, actually register.
+	r.collectorsByID[collectorID] = c
+	for hash := range newDescIDs {
+		r.descIDs[hash] = struct{}{}
+	}
+	for name, dimHash := range newDimHashesByName {
+		r.dimHashesByName[name] = dimHash
+	}
+	return nil
+}
+
+// Unregister implements Registerer.
+func (r *Registry) Unregister(c Collector) bool {
+	var (
+		descChan    = make(chan *Desc, capDescChan)
+		descIDs     = map[uint64]struct{}{}
+		collectorID uint64 // Just a sum of the desc IDs.
+	)
+	go func() {
+		c.Describe(descChan)
+		close(descChan)
+	}()
+	for desc := range descChan {
+		if _, exists := descIDs[desc.id]; !exists {
+			collectorID += desc.id
+			descIDs[desc.id] = struct{}{}
+		}
+	}
+
+	r.mtx.RLock()
+	if _, exists := r.collectorsByID[collectorID]; !exists {
+		r.mtx.RUnlock()
+		return false
+	}
+	r.mtx.RUnlock()
+
+	r.mtx.Lock()
+	defer r.mtx.Unlock()
+
+	delete(r.collectorsByID, collectorID)
+	for id := range descIDs {
+		delete(r.descIDs, id)
+	}
+	// dimHashesByName is left untouched as those must be consistent
+	// throughout the lifetime of a program.
+	return true
+}
+
+// MustRegister implements Registerer.
+func (r *Registry) MustRegister(cs ...Collector) {
+	for _, c := range cs {
+		if err := r.Register(c); err != nil {
+			panic(err)
+		}
+	}
+}
+
+// Gather implements Gatherer.
+func (r *Registry) Gather() ([]*dto.MetricFamily, error) {
+	var (
+		metricChan        = make(chan Metric, capMetricChan)
+		metricHashes      = map[uint64]struct{}{}
+		dimHashes         = map[string]uint64{}
+		wg                sync.WaitGroup
+		errs              MultiError          // The collected errors to return in the end.
+		registeredDescIDs map[uint64]struct{} // Only used for pedantic checks
+	)
+
+	r.mtx.RLock()
+	metricFamiliesByName := make(map[string]*dto.MetricFamily, len(r.dimHashesByName))
+
+	// Scatter.
+	// (Collectors could be complex and slow, so we call them all at once.)
+	wg.Add(len(r.collectorsByID))
+	go func() {
+		wg.Wait()
+		close(metricChan)
+	}()
+	for _, collector := range r.collectorsByID {
+		go func(collector Collector) {
+			defer wg.Done()
+			collector.Collect(metricChan)
+		}(collector)
+	}
+
+	// In case pedantic checks are enabled, we have to copy the map before
+	// giving up the RLock.
+	if r.pedanticChecksEnabled {
+		registeredDescIDs = make(map[uint64]struct{}, len(r.descIDs))
+		for id := range r.descIDs {
+			registeredDescIDs[id] = struct{}{}
+		}
+	}
+
+	r.mtx.RUnlock()
+
+	// Drain metricChan in case of premature return.
+	defer func() {
+		for _ = range metricChan {
+		}
+	}()
+
+	// Gather.
+	for metric := range metricChan {
+		// This could be done concurrently, too, but it required locking
+		// of metricFamiliesByName (and of metricHashes if checks are
+		// enabled). Most likely not worth it.
+		desc := metric.Desc()
+		dtoMetric := &dto.Metric{}
+		if err := metric.Write(dtoMetric); err != nil {
+			errs = append(errs, fmt.Errorf(
+				"error collecting metric %v: %s", desc, err,
+			))
+			continue
+		}
+		metricFamily, ok := metricFamiliesByName[desc.fqName]
+		if ok {
+			if metricFamily.GetHelp() != desc.help {
+				errs = append(errs, fmt.Errorf(
+					"collected metric %s %s has help %q but should have %q",
+					desc.fqName, dtoMetric, desc.help, metricFamily.GetHelp(),
+				))
+				continue
+			}
+			// TODO(beorn7): Simplify switch once Desc has type.
+			switch metricFamily.GetType() {
+			case dto.MetricType_COUNTER:
+				if dtoMetric.Counter == nil {
+					errs = append(errs, fmt.Errorf(
+						"collected metric %s %s should be a Counter",
+						desc.fqName, dtoMetric,
+					))
+					continue
+				}
+			case dto.MetricType_GAUGE:
+				if dtoMetric.Gauge == nil {
+					errs = append(errs, fmt.Errorf(
+						"collected metric %s %s should be a Gauge",
+						desc.fqName, dtoMetric,
+					))
+					continue
+				}
+			case dto.MetricType_SUMMARY:
+				if dtoMetric.Summary == nil {
+					errs = append(errs, fmt.Errorf(
+						"collected metric %s %s should be a Summary",
+						desc.fqName, dtoMetric,
+					))
+					continue
+				}
+			case dto.MetricType_UNTYPED:
+				if dtoMetric.Untyped == nil {
+					errs = append(errs, fmt.Errorf(
+						"collected metric %s %s should be Untyped",
+						desc.fqName, dtoMetric,
+					))
+					continue
+				}
+			case dto.MetricType_HISTOGRAM:
+				if dtoMetric.Histogram == nil {
+					errs = append(errs, fmt.Errorf(
+						"collected metric %s %s should be a Histogram",
+						desc.fqName, dtoMetric,
+					))
+					continue
+				}
+			default:
+				panic("encountered MetricFamily with invalid type")
+			}
+		} else {
+			metricFamily = &dto.MetricFamily{}
+			metricFamily.Name = proto.String(desc.fqName)
+			metricFamily.Help = proto.String(desc.help)
+			// TODO(beorn7): Simplify switch once Desc has type.
+			switch {
+			case dtoMetric.Gauge != nil:
+				metricFamily.Type = dto.MetricType_GAUGE.Enum()
+			case dtoMetric.Counter != nil:
+				metricFamily.Type = dto.MetricType_COUNTER.Enum()
+			case dtoMetric.Summary != nil:
+				metricFamily.Type = dto.MetricType_SUMMARY.Enum()
+			case dtoMetric.Untyped != nil:
+				metricFamily.Type = dto.MetricType_UNTYPED.Enum()
+			case dtoMetric.Histogram != nil:
+				metricFamily.Type = dto.MetricType_HISTOGRAM.Enum()
+			default:
+				errs = append(errs, fmt.Errorf(
+					"empty metric collected: %s", dtoMetric,
+				))
+				continue
+			}
+			metricFamiliesByName[desc.fqName] = metricFamily
+		}
+		if err := checkMetricConsistency(metricFamily, dtoMetric, metricHashes, dimHashes); err != nil {
+			errs = append(errs, err)
+			continue
+		}
+		if r.pedanticChecksEnabled {
+			// Is the desc registered at all?
+			if _, exist := registeredDescIDs[desc.id]; !exist {
+				errs = append(errs, fmt.Errorf(
+					"collected metric %s %s with unregistered descriptor %s",
+					metricFamily.GetName(), dtoMetric, desc,
+				))
+				continue
+			}
+			if err := checkDescConsistency(metricFamily, dtoMetric, desc); err != nil {
+				errs = append(errs, err)
+				continue
+			}
+		}
+		metricFamily.Metric = append(metricFamily.Metric, dtoMetric)
+	}
+	return normalizeMetricFamilies(metricFamiliesByName), errs.MaybeUnwrap()
+}
+
+// Gatherers is a slice of Gatherer instances that implements the Gatherer
+// interface itself. Its Gather method calls Gather on all Gatherers in the
+// slice in order and returns the merged results. Errors returned from the
+// Gather calles are all returned in a flattened MultiError. Duplicate and
+// inconsistent Metrics are skipped (first occurrence in slice order wins) and
+// reported in the returned error.
+//
+// Gatherers can be used to merge the Gather results from multiple
+// Registries. It also provides a way to directly inject existing MetricFamily
+// protobufs into the gathering by creating a custom Gatherer with a Gather
+// method that simply returns the existing MetricFamily protobufs. Note that no
+// registration is involved (in contrast to Collector registration), so
+// obviously registration-time checks cannot happen. Any inconsistencies between
+// the gathered MetricFamilies are reported as errors by the Gather method, and
+// inconsistent Metrics are dropped. Invalid parts of the MetricFamilies
+// (e.g. syntactically invalid metric or label names) will go undetected.
+type Gatherers []Gatherer
+
+// Gather implements Gatherer.
+func (gs Gatherers) Gather() ([]*dto.MetricFamily, error) {
+	var (
+		metricFamiliesByName = map[string]*dto.MetricFamily{}
+		metricHashes         = map[uint64]struct{}{}
+		dimHashes            = map[string]uint64{}
+		errs                 MultiError // The collected errors to return in the end.
+	)
+
+	for i, g := range gs {
+		mfs, err := g.Gather()
+		if err != nil {
+			if multiErr, ok := err.(MultiError); ok {
+				for _, err := range multiErr {
+					errs = append(errs, fmt.Errorf("[from Gatherer #%d] %s", i+1, err))
+				}
+			} else {
+				errs = append(errs, fmt.Errorf("[from Gatherer #%d] %s", i+1, err))
+			}
+		}
+		for _, mf := range mfs {
+			existingMF, exists := metricFamiliesByName[mf.GetName()]
+			if exists {
+				if existingMF.GetHelp() != mf.GetHelp() {
+					errs = append(errs, fmt.Errorf(
+						"gathered metric family %s has help %q but should have %q",
+						mf.GetName(), mf.GetHelp(), existingMF.GetHelp(),
+					))
+					continue
+				}
+				if existingMF.GetType() != mf.GetType() {
+					errs = append(errs, fmt.Errorf(
+						"gathered metric family %s has type %s but should have %s",
+						mf.GetName(), mf.GetType(), existingMF.GetType(),
+					))
+					continue
+				}
+			} else {
+				existingMF = &dto.MetricFamily{}
+				existingMF.Name = mf.Name
+				existingMF.Help = mf.Help
+				existingMF.Type = mf.Type
+				metricFamiliesByName[mf.GetName()] = existingMF
+			}
+			for _, m := range mf.Metric {
+				if err := checkMetricConsistency(existingMF, m, metricHashes, dimHashes); err != nil {
+					errs = append(errs, err)
+					continue
+				}
+				existingMF.Metric = append(existingMF.Metric, m)
+			}
+		}
+	}
+	return normalizeMetricFamilies(metricFamiliesByName), errs.MaybeUnwrap()
+}
+
+// metricSorter is a sortable slice of *dto.Metric.
+type metricSorter []*dto.Metric
+
+func (s metricSorter) Len() int {
+	return len(s)
+}
+
+func (s metricSorter) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+
+func (s metricSorter) Less(i, j int) bool {
+	if len(s[i].Label) != len(s[j].Label) {
+		// This should not happen. The metrics are
+		// inconsistent. However, we have to deal with the fact, as
+		// people might use custom collectors or metric family injection
+		// to create inconsistent metrics. So let's simply compare the
+		// number of labels in this case. That will still yield
+		// reproducible sorting.
+		return len(s[i].Label) < len(s[j].Label)
+	}
+	for n, lp := range s[i].Label {
+		vi := lp.GetValue()
+		vj := s[j].Label[n].GetValue()
+		if vi != vj {
+			return vi < vj
+		}
+	}
+
+	// We should never arrive here. Multiple metrics with the same
+	// label set in the same scrape will lead to undefined ingestion
+	// behavior. However, as above, we have to provide stable sorting
+	// here, even for inconsistent metrics. So sort equal metrics
+	// by their timestamp, with missing timestamps (implying "now")
+	// coming last.
+	if s[i].TimestampMs == nil {
+		return false
+	}
+	if s[j].TimestampMs == nil {
+		return true
+	}
+	return s[i].GetTimestampMs() < s[j].GetTimestampMs()
+}
+
+// normalizeMetricFamilies returns a MetricFamily slice whith empty
+// MetricFamilies pruned and the remaining MetricFamilies sorted by name within
+// the slice, with the contained Metrics sorted within each MetricFamily.
+func normalizeMetricFamilies(metricFamiliesByName map[string]*dto.MetricFamily) []*dto.MetricFamily {
+	for _, mf := range metricFamiliesByName {
+		sort.Sort(metricSorter(mf.Metric))
+	}
+	names := make([]string, 0, len(metricFamiliesByName))
+	for name, mf := range metricFamiliesByName {
+		if len(mf.Metric) > 0 {
+			names = append(names, name)
+		}
+	}
+	sort.Strings(names)
+	result := make([]*dto.MetricFamily, 0, len(names))
+	for _, name := range names {
+		result = append(result, metricFamiliesByName[name])
+	}
+	return result
+}
+
+// checkMetricConsistency checks if the provided Metric is consistent with the
+// provided MetricFamily. It also hashed the Metric labels and the MetricFamily
+// name. If the resulting hash is alread in the provided metricHashes, an error
+// is returned. If not, it is added to metricHashes. The provided dimHashes maps
+// MetricFamily names to their dimHash (hashed sorted label names). If dimHashes
+// doesn't yet contain a hash for the provided MetricFamily, it is
+// added. Otherwise, an error is returned if the existing dimHashes in not equal
+// the calculated dimHash.
+func checkMetricConsistency(
+	metricFamily *dto.MetricFamily,
+	dtoMetric *dto.Metric,
+	metricHashes map[uint64]struct{},
+	dimHashes map[string]uint64,
+) error {
+	// Type consistency with metric family.
+	if metricFamily.GetType() == dto.MetricType_GAUGE && dtoMetric.Gauge == nil ||
+		metricFamily.GetType() == dto.MetricType_COUNTER && dtoMetric.Counter == nil ||
+		metricFamily.GetType() == dto.MetricType_SUMMARY && dtoMetric.Summary == nil ||
+		metricFamily.GetType() == dto.MetricType_HISTOGRAM && dtoMetric.Histogram == nil ||
+		metricFamily.GetType() == dto.MetricType_UNTYPED && dtoMetric.Untyped == nil {
+		return fmt.Errorf(
+			"collected metric %s %s is not a %s",
+			metricFamily.GetName(), dtoMetric, metricFamily.GetType(),
+		)
+	}
+
+	// Is the metric unique (i.e. no other metric with the same name and the same label values)?
+	h := hashNew()
+	h = hashAdd(h, metricFamily.GetName())
+	h = hashAddByte(h, separatorByte)
+	dh := hashNew()
+	// Make sure label pairs are sorted. We depend on it for the consistency
+	// check.
+	sort.Sort(LabelPairSorter(dtoMetric.Label))
+	for _, lp := range dtoMetric.Label {
+		h = hashAdd(h, lp.GetValue())
+		h = hashAddByte(h, separatorByte)
+		dh = hashAdd(dh, lp.GetName())
+		dh = hashAddByte(dh, separatorByte)
+	}
+	if _, exists := metricHashes[h]; exists {
+		return fmt.Errorf(
+			"collected metric %s %s was collected before with the same name and label values",
+			metricFamily.GetName(), dtoMetric,
+		)
+	}
+	if dimHash, ok := dimHashes[metricFamily.GetName()]; ok {
+		if dimHash != dh {
+			return fmt.Errorf(
+				"collected metric %s %s has label dimensions inconsistent with previously collected metrics in the same metric family",
+				metricFamily.GetName(), dtoMetric,
+			)
+		}
+	} else {
+		dimHashes[metricFamily.GetName()] = dh
+	}
+	metricHashes[h] = struct{}{}
+	return nil
+}
+
+func checkDescConsistency(
+	metricFamily *dto.MetricFamily,
+	dtoMetric *dto.Metric,
+	desc *Desc,
+) error {
+	// Desc help consistency with metric family help.
+	if metricFamily.GetHelp() != desc.help {
+		return fmt.Errorf(
+			"collected metric %s %s has help %q but should have %q",
+			metricFamily.GetName(), dtoMetric, metricFamily.GetHelp(), desc.help,
+		)
+	}
+
+	// Is the desc consistent with the content of the metric?
+	lpsFromDesc := make([]*dto.LabelPair, 0, len(dtoMetric.Label))
+	lpsFromDesc = append(lpsFromDesc, desc.constLabelPairs...)
+	for _, l := range desc.variableLabels {
+		lpsFromDesc = append(lpsFromDesc, &dto.LabelPair{
+			Name: proto.String(l),
+		})
+	}
+	if len(lpsFromDesc) != len(dtoMetric.Label) {
+		return fmt.Errorf(
+			"labels in collected metric %s %s are inconsistent with descriptor %s",
+			metricFamily.GetName(), dtoMetric, desc,
+		)
+	}
+	sort.Sort(LabelPairSorter(lpsFromDesc))
+	for i, lpFromDesc := range lpsFromDesc {
+		lpFromMetric := dtoMetric.Label[i]
+		if lpFromDesc.GetName() != lpFromMetric.GetName() ||
+			lpFromDesc.Value != nil && lpFromDesc.GetValue() != lpFromMetric.GetValue() {
+			return fmt.Errorf(
+				"labels in collected metric %s %s are inconsistent with descriptor %s",
+				metricFamily.GetName(), dtoMetric, desc,
+			)
+		}
+	}
+	return nil
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/registry_test.go b/vendor/github.com/prometheus/client_golang/prometheus/registry_test.go
new file mode 100644
index 000000000..9dacb6256
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/registry_test.go
@@ -0,0 +1,545 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Copyright (c) 2013, The Prometheus Authors
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be found
+// in the LICENSE file.
+
+package prometheus_test
+
+import (
+	"bytes"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	dto "github.com/prometheus/client_model/go"
+
+	"github.com/golang/protobuf/proto"
+	"github.com/prometheus/common/expfmt"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+)
+
+func testHandler(t testing.TB) {
+
+	metricVec := prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name:        "name",
+			Help:        "docstring",
+			ConstLabels: prometheus.Labels{"constname": "constvalue"},
+		},
+		[]string{"labelname"},
+	)
+
+	metricVec.WithLabelValues("val1").Inc()
+	metricVec.WithLabelValues("val2").Inc()
+
+	externalMetricFamily := &dto.MetricFamily{
+		Name: proto.String("externalname"),
+		Help: proto.String("externaldocstring"),
+		Type: dto.MetricType_COUNTER.Enum(),
+		Metric: []*dto.Metric{
+			{
+				Label: []*dto.LabelPair{
+					{
+						Name:  proto.String("externalconstname"),
+						Value: proto.String("externalconstvalue"),
+					},
+					{
+						Name:  proto.String("externallabelname"),
+						Value: proto.String("externalval1"),
+					},
+				},
+				Counter: &dto.Counter{
+					Value: proto.Float64(1),
+				},
+			},
+		},
+	}
+	externalBuf := &bytes.Buffer{}
+	enc := expfmt.NewEncoder(externalBuf, expfmt.FmtProtoDelim)
+	if err := enc.Encode(externalMetricFamily); err != nil {
+		t.Fatal(err)
+	}
+	externalMetricFamilyAsBytes := externalBuf.Bytes()
+	externalMetricFamilyAsText := []byte(`# HELP externalname externaldocstring
+# TYPE externalname counter
+externalname{externalconstname="externalconstvalue",externallabelname="externalval1"} 1
+`)
+	externalMetricFamilyAsProtoText := []byte(`name: "externalname"
+help: "externaldocstring"
+type: COUNTER
+metric: <
+  label: <
+    name: "externalconstname"
+    value: "externalconstvalue"
+  >
+  label: <
+    name: "externallabelname"
+    value: "externalval1"
+  >
+  counter: <
+    value: 1
+  >
+>
+
+`)
+	externalMetricFamilyAsProtoCompactText := []byte(`name:"externalname" help:"externaldocstring" type:COUNTER metric:<label:<name:"externalconstname" value:"externalconstvalue" > label:<name:"externallabelname" value:"externalval1" > counter:<value:1 > > 
+`)
+
+	expectedMetricFamily := &dto.MetricFamily{
+		Name: proto.String("name"),
+		Help: proto.String("docstring"),
+		Type: dto.MetricType_COUNTER.Enum(),
+		Metric: []*dto.Metric{
+			{
+				Label: []*dto.LabelPair{
+					{
+						Name:  proto.String("constname"),
+						Value: proto.String("constvalue"),
+					},
+					{
+						Name:  proto.String("labelname"),
+						Value: proto.String("val1"),
+					},
+				},
+				Counter: &dto.Counter{
+					Value: proto.Float64(1),
+				},
+			},
+			{
+				Label: []*dto.LabelPair{
+					{
+						Name:  proto.String("constname"),
+						Value: proto.String("constvalue"),
+					},
+					{
+						Name:  proto.String("labelname"),
+						Value: proto.String("val2"),
+					},
+				},
+				Counter: &dto.Counter{
+					Value: proto.Float64(1),
+				},
+			},
+		},
+	}
+	buf := &bytes.Buffer{}
+	enc = expfmt.NewEncoder(buf, expfmt.FmtProtoDelim)
+	if err := enc.Encode(expectedMetricFamily); err != nil {
+		t.Fatal(err)
+	}
+	expectedMetricFamilyAsBytes := buf.Bytes()
+	expectedMetricFamilyAsText := []byte(`# HELP name docstring
+# TYPE name counter
+name{constname="constvalue",labelname="val1"} 1
+name{constname="constvalue",labelname="val2"} 1
+`)
+	expectedMetricFamilyAsProtoText := []byte(`name: "name"
+help: "docstring"
+type: COUNTER
+metric: <
+  label: <
+    name: "constname"
+    value: "constvalue"
+  >
+  label: <
+    name: "labelname"
+    value: "val1"
+  >
+  counter: <
+    value: 1
+  >
+>
+metric: <
+  label: <
+    name: "constname"
+    value: "constvalue"
+  >
+  label: <
+    name: "labelname"
+    value: "val2"
+  >
+  counter: <
+    value: 1
+  >
+>
+
+`)
+	expectedMetricFamilyAsProtoCompactText := []byte(`name:"name" help:"docstring" type:COUNTER metric:<label:<name:"constname" value:"constvalue" > label:<name:"labelname" value:"val1" > counter:<value:1 > > metric:<label:<name:"constname" value:"constvalue" > label:<name:"labelname" value:"val2" > counter:<value:1 > > 
+`)
+
+	externalMetricFamilyWithSameName := &dto.MetricFamily{
+		Name: proto.String("name"),
+		Help: proto.String("docstring"),
+		Type: dto.MetricType_COUNTER.Enum(),
+		Metric: []*dto.Metric{
+			{
+				Label: []*dto.LabelPair{
+					{
+						Name:  proto.String("constname"),
+						Value: proto.String("constvalue"),
+					},
+					{
+						Name:  proto.String("labelname"),
+						Value: proto.String("different_val"),
+					},
+				},
+				Counter: &dto.Counter{
+					Value: proto.Float64(42),
+				},
+			},
+		},
+	}
+
+	expectedMetricFamilyMergedWithExternalAsProtoCompactText := []byte(`name:"name" help:"docstring" type:COUNTER metric:<label:<name:"constname" value:"constvalue" > label:<name:"labelname" value:"different_val" > counter:<value:42 > > metric:<label:<name:"constname" value:"constvalue" > label:<name:"labelname" value:"val1" > counter:<value:1 > > metric:<label:<name:"constname" value:"constvalue" > label:<name:"labelname" value:"val2" > counter:<value:1 > > 
+`)
+
+	type output struct {
+		headers map[string]string
+		body    []byte
+	}
+
+	var scenarios = []struct {
+		headers    map[string]string
+		out        output
+		collector  prometheus.Collector
+		externalMF []*dto.MetricFamily
+	}{
+		{ // 0
+			headers: map[string]string{
+				"Accept": "foo/bar;q=0.2, dings/bums;q=0.8",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `text/plain; version=0.0.4`,
+				},
+				body: []byte{},
+			},
+		},
+		{ // 1
+			headers: map[string]string{
+				"Accept": "foo/bar;q=0.2, application/quark;q=0.8",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `text/plain; version=0.0.4`,
+				},
+				body: []byte{},
+			},
+		},
+		{ // 2
+			headers: map[string]string{
+				"Accept": "foo/bar;q=0.2, application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=bla;q=0.8",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `text/plain; version=0.0.4`,
+				},
+				body: []byte{},
+			},
+		},
+		{ // 3
+			headers: map[string]string{
+				"Accept": "text/plain;q=0.2, application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=delimited;q=0.8",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `application/vnd.google.protobuf; proto=io.prometheus.client.MetricFamily; encoding=delimited`,
+				},
+				body: []byte{},
+			},
+		},
+		{ // 4
+			headers: map[string]string{
+				"Accept": "application/json",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `text/plain; version=0.0.4`,
+				},
+				body: expectedMetricFamilyAsText,
+			},
+			collector: metricVec,
+		},
+		{ // 5
+			headers: map[string]string{
+				"Accept": "application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=delimited",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `application/vnd.google.protobuf; proto=io.prometheus.client.MetricFamily; encoding=delimited`,
+				},
+				body: expectedMetricFamilyAsBytes,
+			},
+			collector: metricVec,
+		},
+		{ // 6
+			headers: map[string]string{
+				"Accept": "application/json",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `text/plain; version=0.0.4`,
+				},
+				body: externalMetricFamilyAsText,
+			},
+			externalMF: []*dto.MetricFamily{externalMetricFamily},
+		},
+		{ // 7
+			headers: map[string]string{
+				"Accept": "application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=delimited",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `application/vnd.google.protobuf; proto=io.prometheus.client.MetricFamily; encoding=delimited`,
+				},
+				body: externalMetricFamilyAsBytes,
+			},
+			externalMF: []*dto.MetricFamily{externalMetricFamily},
+		},
+		{ // 8
+			headers: map[string]string{
+				"Accept": "application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=delimited",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `application/vnd.google.protobuf; proto=io.prometheus.client.MetricFamily; encoding=delimited`,
+				},
+				body: bytes.Join(
+					[][]byte{
+						externalMetricFamilyAsBytes,
+						expectedMetricFamilyAsBytes,
+					},
+					[]byte{},
+				),
+			},
+			collector:  metricVec,
+			externalMF: []*dto.MetricFamily{externalMetricFamily},
+		},
+		{ // 9
+			headers: map[string]string{
+				"Accept": "text/plain",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `text/plain; version=0.0.4`,
+				},
+				body: []byte{},
+			},
+		},
+		{ // 10
+			headers: map[string]string{
+				"Accept": "application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=bla;q=0.2, text/plain;q=0.5",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `text/plain; version=0.0.4`,
+				},
+				body: expectedMetricFamilyAsText,
+			},
+			collector: metricVec,
+		},
+		{ // 11
+			headers: map[string]string{
+				"Accept": "application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=bla;q=0.2, text/plain;q=0.5;version=0.0.4",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `text/plain; version=0.0.4`,
+				},
+				body: bytes.Join(
+					[][]byte{
+						externalMetricFamilyAsText,
+						expectedMetricFamilyAsText,
+					},
+					[]byte{},
+				),
+			},
+			collector:  metricVec,
+			externalMF: []*dto.MetricFamily{externalMetricFamily},
+		},
+		{ // 12
+			headers: map[string]string{
+				"Accept": "application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=delimited;q=0.2, text/plain;q=0.5;version=0.0.2",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `application/vnd.google.protobuf; proto=io.prometheus.client.MetricFamily; encoding=delimited`,
+				},
+				body: bytes.Join(
+					[][]byte{
+						externalMetricFamilyAsBytes,
+						expectedMetricFamilyAsBytes,
+					},
+					[]byte{},
+				),
+			},
+			collector:  metricVec,
+			externalMF: []*dto.MetricFamily{externalMetricFamily},
+		},
+		{ // 13
+			headers: map[string]string{
+				"Accept": "application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=text;q=0.5, application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=delimited;q=0.4",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `application/vnd.google.protobuf; proto=io.prometheus.client.MetricFamily; encoding=text`,
+				},
+				body: bytes.Join(
+					[][]byte{
+						externalMetricFamilyAsProtoText,
+						expectedMetricFamilyAsProtoText,
+					},
+					[]byte{},
+				),
+			},
+			collector:  metricVec,
+			externalMF: []*dto.MetricFamily{externalMetricFamily},
+		},
+		{ // 14
+			headers: map[string]string{
+				"Accept": "application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=compact-text",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `application/vnd.google.protobuf; proto=io.prometheus.client.MetricFamily; encoding=compact-text`,
+				},
+				body: bytes.Join(
+					[][]byte{
+						externalMetricFamilyAsProtoCompactText,
+						expectedMetricFamilyAsProtoCompactText,
+					},
+					[]byte{},
+				),
+			},
+			collector:  metricVec,
+			externalMF: []*dto.MetricFamily{externalMetricFamily},
+		},
+		{ // 15
+			headers: map[string]string{
+				"Accept": "application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=compact-text",
+			},
+			out: output{
+				headers: map[string]string{
+					"Content-Type": `application/vnd.google.protobuf; proto=io.prometheus.client.MetricFamily; encoding=compact-text`,
+				},
+				body: bytes.Join(
+					[][]byte{
+						externalMetricFamilyAsProtoCompactText,
+						expectedMetricFamilyMergedWithExternalAsProtoCompactText,
+					},
+					[]byte{},
+				),
+			},
+			collector: metricVec,
+			externalMF: []*dto.MetricFamily{
+				externalMetricFamily,
+				externalMetricFamilyWithSameName,
+			},
+		},
+	}
+	for i, scenario := range scenarios {
+		registry := prometheus.NewPedanticRegistry()
+		gatherer := prometheus.Gatherer(registry)
+		if scenario.externalMF != nil {
+			gatherer = prometheus.Gatherers{
+				registry,
+				prometheus.GathererFunc(func() ([]*dto.MetricFamily, error) {
+					return scenario.externalMF, nil
+				}),
+			}
+		}
+
+		if scenario.collector != nil {
+			registry.Register(scenario.collector)
+		}
+		writer := httptest.NewRecorder()
+		handler := prometheus.InstrumentHandler("prometheus", promhttp.HandlerFor(gatherer, promhttp.HandlerOpts{}))
+		request, _ := http.NewRequest("GET", "/", nil)
+		for key, value := range scenario.headers {
+			request.Header.Add(key, value)
+		}
+		handler(writer, request)
+
+		for key, value := range scenario.out.headers {
+			if writer.HeaderMap.Get(key) != value {
+				t.Errorf(
+					"%d. expected %q for header %q, got %q",
+					i, value, key, writer.Header().Get(key),
+				)
+			}
+		}
+
+		if !bytes.Equal(scenario.out.body, writer.Body.Bytes()) {
+			t.Errorf(
+				"%d. expected body:\n%s\ngot body:\n%s\n",
+				i, scenario.out.body, writer.Body.Bytes(),
+			)
+		}
+	}
+}
+
+func TestHandler(t *testing.T) {
+	testHandler(t)
+}
+
+func BenchmarkHandler(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		testHandler(b)
+	}
+}
+
+func TestRegisterWithOrGet(t *testing.T) {
+	// Replace the default registerer just to be sure. This is bad, but this
+	// whole test will go away once RegisterOrGet is removed.
+	oldRegisterer := prometheus.DefaultRegisterer
+	defer func() {
+		prometheus.DefaultRegisterer = oldRegisterer
+	}()
+	prometheus.DefaultRegisterer = prometheus.NewRegistry()
+	original := prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "test",
+			Help: "help",
+		},
+		[]string{"foo", "bar"},
+	)
+	equalButNotSame := prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "test",
+			Help: "help",
+		},
+		[]string{"foo", "bar"},
+	)
+	if err := prometheus.Register(original); err != nil {
+		t.Fatal(err)
+	}
+	if err := prometheus.Register(equalButNotSame); err == nil {
+		t.Fatal("expected error when registringe equal collector")
+	}
+	existing, err := prometheus.RegisterOrGet(equalButNotSame)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if existing != original {
+		t.Error("expected original collector but got something else")
+	}
+	if existing == equalButNotSame {
+		t.Error("expected original callector but got new one")
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/summary.go b/vendor/github.com/prometheus/client_golang/prometheus/summary.go
new file mode 100644
index 000000000..bce05bf9a
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/summary.go
@@ -0,0 +1,534 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"fmt"
+	"math"
+	"sort"
+	"sync"
+	"time"
+
+	"github.com/beorn7/perks/quantile"
+	"github.com/golang/protobuf/proto"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+// quantileLabel is used for the label that defines the quantile in a
+// summary.
+const quantileLabel = "quantile"
+
+// A Summary captures individual observations from an event or sample stream and
+// summarizes them in a manner similar to traditional summary statistics: 1. sum
+// of observations, 2. observation count, 3. rank estimations.
+//
+// A typical use-case is the observation of request latencies. By default, a
+// Summary provides the median, the 90th and the 99th percentile of the latency
+// as rank estimations.
+//
+// Note that the rank estimations cannot be aggregated in a meaningful way with
+// the Prometheus query language (i.e. you cannot average or add them). If you
+// need aggregatable quantiles (e.g. you want the 99th percentile latency of all
+// queries served across all instances of a service), consider the Histogram
+// metric type. See the Prometheus documentation for more details.
+//
+// To create Summary instances, use NewSummary.
+type Summary interface {
+	Metric
+	Collector
+
+	// Observe adds a single observation to the summary.
+	Observe(float64)
+}
+
+// DefObjectives are the default Summary quantile values.
+var (
+	DefObjectives = map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001}
+
+	errQuantileLabelNotAllowed = fmt.Errorf(
+		"%q is not allowed as label name in summaries", quantileLabel,
+	)
+)
+
+// Default values for SummaryOpts.
+const (
+	// DefMaxAge is the default duration for which observations stay
+	// relevant.
+	DefMaxAge time.Duration = 10 * time.Minute
+	// DefAgeBuckets is the default number of buckets used to calculate the
+	// age of observations.
+	DefAgeBuckets = 5
+	// DefBufCap is the standard buffer size for collecting Summary observations.
+	DefBufCap = 500
+)
+
+// SummaryOpts bundles the options for creating a Summary metric. It is
+// mandatory to set Name and Help to a non-empty string. All other fields are
+// optional and can safely be left at their zero value.
+type SummaryOpts struct {
+	// Namespace, Subsystem, and Name are components of the fully-qualified
+	// name of the Summary (created by joining these components with
+	// "_"). Only Name is mandatory, the others merely help structuring the
+	// name. Note that the fully-qualified name of the Summary must be a
+	// valid Prometheus metric name.
+	Namespace string
+	Subsystem string
+	Name      string
+
+	// Help provides information about this Summary. Mandatory!
+	//
+	// Metrics with the same fully-qualified name must have the same Help
+	// string.
+	Help string
+
+	// ConstLabels are used to attach fixed labels to this
+	// Summary. Summaries with the same fully-qualified name must have the
+	// same label names in their ConstLabels.
+	//
+	// Note that in most cases, labels have a value that varies during the
+	// lifetime of a process. Those labels are usually managed with a
+	// SummaryVec. ConstLabels serve only special purposes. One is for the
+	// special case where the value of a label does not change during the
+	// lifetime of a process, e.g. if the revision of the running binary is
+	// put into a label. Another, more advanced purpose is if more than one
+	// Collector needs to collect Summaries with the same fully-qualified
+	// name. In that case, those Summaries must differ in the values of
+	// their ConstLabels. See the Collector examples.
+	//
+	// If the value of a label never changes (not even between binaries),
+	// that label most likely should not be a label at all (but part of the
+	// metric name).
+	ConstLabels Labels
+
+	// Objectives defines the quantile rank estimates with their respective
+	// absolute error. If Objectives[q] = e, then the value reported
+	// for q will be the φ-quantile value for some φ between q-e and q+e.
+	// The default value is DefObjectives.
+	Objectives map[float64]float64
+
+	// MaxAge defines the duration for which an observation stays relevant
+	// for the summary. Must be positive. The default value is DefMaxAge.
+	MaxAge time.Duration
+
+	// AgeBuckets is the number of buckets used to exclude observations that
+	// are older than MaxAge from the summary. A higher number has a
+	// resource penalty, so only increase it if the higher resolution is
+	// really required. For very high observation rates, you might want to
+	// reduce the number of age buckets. With only one age bucket, you will
+	// effectively see a complete reset of the summary each time MaxAge has
+	// passed. The default value is DefAgeBuckets.
+	AgeBuckets uint32
+
+	// BufCap defines the default sample stream buffer size.  The default
+	// value of DefBufCap should suffice for most uses. If there is a need
+	// to increase the value, a multiple of 500 is recommended (because that
+	// is the internal buffer size of the underlying package
+	// "github.com/bmizerany/perks/quantile").
+	BufCap uint32
+}
+
+// Great fuck-up with the sliding-window decay algorithm... The Merge method of
+// perk/quantile is actually not working as advertised - and it might be
+// unfixable, as the underlying algorithm is apparently not capable of merging
+// summaries in the first place. To avoid using Merge, we are currently adding
+// observations to _each_ age bucket, i.e. the effort to add a sample is
+// essentially multiplied by the number of age buckets. When rotating age
+// buckets, we empty the previous head stream. On scrape time, we simply take
+// the quantiles from the head stream (no merging required). Result: More effort
+// on observation time, less effort on scrape time, which is exactly the
+// opposite of what we try to accomplish, but at least the results are correct.
+//
+// The quite elegant previous contraption to merge the age buckets efficiently
+// on scrape time (see code up commit 6b9530d72ea715f0ba612c0120e6e09fbf1d49d0)
+// can't be used anymore.
+
+// NewSummary creates a new Summary based on the provided SummaryOpts.
+func NewSummary(opts SummaryOpts) Summary {
+	return newSummary(
+		NewDesc(
+			BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+			opts.Help,
+			nil,
+			opts.ConstLabels,
+		),
+		opts,
+	)
+}
+
+func newSummary(desc *Desc, opts SummaryOpts, labelValues ...string) Summary {
+	if len(desc.variableLabels) != len(labelValues) {
+		panic(errInconsistentCardinality)
+	}
+
+	for _, n := range desc.variableLabels {
+		if n == quantileLabel {
+			panic(errQuantileLabelNotAllowed)
+		}
+	}
+	for _, lp := range desc.constLabelPairs {
+		if lp.GetName() == quantileLabel {
+			panic(errQuantileLabelNotAllowed)
+		}
+	}
+
+	if len(opts.Objectives) == 0 {
+		opts.Objectives = DefObjectives
+	}
+
+	if opts.MaxAge < 0 {
+		panic(fmt.Errorf("illegal max age MaxAge=%v", opts.MaxAge))
+	}
+	if opts.MaxAge == 0 {
+		opts.MaxAge = DefMaxAge
+	}
+
+	if opts.AgeBuckets == 0 {
+		opts.AgeBuckets = DefAgeBuckets
+	}
+
+	if opts.BufCap == 0 {
+		opts.BufCap = DefBufCap
+	}
+
+	s := &summary{
+		desc: desc,
+
+		objectives:       opts.Objectives,
+		sortedObjectives: make([]float64, 0, len(opts.Objectives)),
+
+		labelPairs: makeLabelPairs(desc, labelValues),
+
+		hotBuf:         make([]float64, 0, opts.BufCap),
+		coldBuf:        make([]float64, 0, opts.BufCap),
+		streamDuration: opts.MaxAge / time.Duration(opts.AgeBuckets),
+	}
+	s.headStreamExpTime = time.Now().Add(s.streamDuration)
+	s.hotBufExpTime = s.headStreamExpTime
+
+	for i := uint32(0); i < opts.AgeBuckets; i++ {
+		s.streams = append(s.streams, s.newStream())
+	}
+	s.headStream = s.streams[0]
+
+	for qu := range s.objectives {
+		s.sortedObjectives = append(s.sortedObjectives, qu)
+	}
+	sort.Float64s(s.sortedObjectives)
+
+	s.init(s) // Init self-collection.
+	return s
+}
+
+type summary struct {
+	selfCollector
+
+	bufMtx sync.Mutex // Protects hotBuf and hotBufExpTime.
+	mtx    sync.Mutex // Protects every other moving part.
+	// Lock bufMtx before mtx if both are needed.
+
+	desc *Desc
+
+	objectives       map[float64]float64
+	sortedObjectives []float64
+
+	labelPairs []*dto.LabelPair
+
+	sum float64
+	cnt uint64
+
+	hotBuf, coldBuf []float64
+
+	streams                          []*quantile.Stream
+	streamDuration                   time.Duration
+	headStream                       *quantile.Stream
+	headStreamIdx                    int
+	headStreamExpTime, hotBufExpTime time.Time
+}
+
+func (s *summary) Desc() *Desc {
+	return s.desc
+}
+
+func (s *summary) Observe(v float64) {
+	s.bufMtx.Lock()
+	defer s.bufMtx.Unlock()
+
+	now := time.Now()
+	if now.After(s.hotBufExpTime) {
+		s.asyncFlush(now)
+	}
+	s.hotBuf = append(s.hotBuf, v)
+	if len(s.hotBuf) == cap(s.hotBuf) {
+		s.asyncFlush(now)
+	}
+}
+
+func (s *summary) Write(out *dto.Metric) error {
+	sum := &dto.Summary{}
+	qs := make([]*dto.Quantile, 0, len(s.objectives))
+
+	s.bufMtx.Lock()
+	s.mtx.Lock()
+	// Swap bufs even if hotBuf is empty to set new hotBufExpTime.
+	s.swapBufs(time.Now())
+	s.bufMtx.Unlock()
+
+	s.flushColdBuf()
+	sum.SampleCount = proto.Uint64(s.cnt)
+	sum.SampleSum = proto.Float64(s.sum)
+
+	for _, rank := range s.sortedObjectives {
+		var q float64
+		if s.headStream.Count() == 0 {
+			q = math.NaN()
+		} else {
+			q = s.headStream.Query(rank)
+		}
+		qs = append(qs, &dto.Quantile{
+			Quantile: proto.Float64(rank),
+			Value:    proto.Float64(q),
+		})
+	}
+
+	s.mtx.Unlock()
+
+	if len(qs) > 0 {
+		sort.Sort(quantSort(qs))
+	}
+	sum.Quantile = qs
+
+	out.Summary = sum
+	out.Label = s.labelPairs
+	return nil
+}
+
+func (s *summary) newStream() *quantile.Stream {
+	return quantile.NewTargeted(s.objectives)
+}
+
+// asyncFlush needs bufMtx locked.
+func (s *summary) asyncFlush(now time.Time) {
+	s.mtx.Lock()
+	s.swapBufs(now)
+
+	// Unblock the original goroutine that was responsible for the mutation
+	// that triggered the compaction.  But hold onto the global non-buffer
+	// state mutex until the operation finishes.
+	go func() {
+		s.flushColdBuf()
+		s.mtx.Unlock()
+	}()
+}
+
+// rotateStreams needs mtx AND bufMtx locked.
+func (s *summary) maybeRotateStreams() {
+	for !s.hotBufExpTime.Equal(s.headStreamExpTime) {
+		s.headStream.Reset()
+		s.headStreamIdx++
+		if s.headStreamIdx >= len(s.streams) {
+			s.headStreamIdx = 0
+		}
+		s.headStream = s.streams[s.headStreamIdx]
+		s.headStreamExpTime = s.headStreamExpTime.Add(s.streamDuration)
+	}
+}
+
+// flushColdBuf needs mtx locked.
+func (s *summary) flushColdBuf() {
+	for _, v := range s.coldBuf {
+		for _, stream := range s.streams {
+			stream.Insert(v)
+		}
+		s.cnt++
+		s.sum += v
+	}
+	s.coldBuf = s.coldBuf[0:0]
+	s.maybeRotateStreams()
+}
+
+// swapBufs needs mtx AND bufMtx locked, coldBuf must be empty.
+func (s *summary) swapBufs(now time.Time) {
+	if len(s.coldBuf) != 0 {
+		panic("coldBuf is not empty")
+	}
+	s.hotBuf, s.coldBuf = s.coldBuf, s.hotBuf
+	// hotBuf is now empty and gets new expiration set.
+	for now.After(s.hotBufExpTime) {
+		s.hotBufExpTime = s.hotBufExpTime.Add(s.streamDuration)
+	}
+}
+
+type quantSort []*dto.Quantile
+
+func (s quantSort) Len() int {
+	return len(s)
+}
+
+func (s quantSort) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+
+func (s quantSort) Less(i, j int) bool {
+	return s[i].GetQuantile() < s[j].GetQuantile()
+}
+
+// SummaryVec is a Collector that bundles a set of Summaries that all share the
+// same Desc, but have different values for their variable labels. This is used
+// if you want to count the same thing partitioned by various dimensions
+// (e.g. HTTP request latencies, partitioned by status code and method). Create
+// instances with NewSummaryVec.
+type SummaryVec struct {
+	*MetricVec
+}
+
+// NewSummaryVec creates a new SummaryVec based on the provided SummaryOpts and
+// partitioned by the given label names. At least one label name must be
+// provided.
+func NewSummaryVec(opts SummaryOpts, labelNames []string) *SummaryVec {
+	desc := NewDesc(
+		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		opts.Help,
+		labelNames,
+		opts.ConstLabels,
+	)
+	return &SummaryVec{
+		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
+			return newSummary(desc, opts, lvs...)
+		}),
+	}
+}
+
+// GetMetricWithLabelValues replaces the method of the same name in
+// MetricVec. The difference is that this method returns a Summary and not a
+// Metric so that no type conversion is required.
+func (m *SummaryVec) GetMetricWithLabelValues(lvs ...string) (Summary, error) {
+	metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...)
+	if metric != nil {
+		return metric.(Summary), err
+	}
+	return nil, err
+}
+
+// GetMetricWith replaces the method of the same name in MetricVec. The
+// difference is that this method returns a Summary and not a Metric so that no
+// type conversion is required.
+func (m *SummaryVec) GetMetricWith(labels Labels) (Summary, error) {
+	metric, err := m.MetricVec.GetMetricWith(labels)
+	if metric != nil {
+		return metric.(Summary), err
+	}
+	return nil, err
+}
+
+// WithLabelValues works as GetMetricWithLabelValues, but panics where
+// GetMetricWithLabelValues would have returned an error. By not returning an
+// error, WithLabelValues allows shortcuts like
+//     myVec.WithLabelValues("404", "GET").Observe(42.21)
+func (m *SummaryVec) WithLabelValues(lvs ...string) Summary {
+	return m.MetricVec.WithLabelValues(lvs...).(Summary)
+}
+
+// With works as GetMetricWith, but panics where GetMetricWithLabels would have
+// returned an error. By not returning an error, With allows shortcuts like
+//     myVec.With(Labels{"code": "404", "method": "GET"}).Observe(42.21)
+func (m *SummaryVec) With(labels Labels) Summary {
+	return m.MetricVec.With(labels).(Summary)
+}
+
+type constSummary struct {
+	desc       *Desc
+	count      uint64
+	sum        float64
+	quantiles  map[float64]float64
+	labelPairs []*dto.LabelPair
+}
+
+func (s *constSummary) Desc() *Desc {
+	return s.desc
+}
+
+func (s *constSummary) Write(out *dto.Metric) error {
+	sum := &dto.Summary{}
+	qs := make([]*dto.Quantile, 0, len(s.quantiles))
+
+	sum.SampleCount = proto.Uint64(s.count)
+	sum.SampleSum = proto.Float64(s.sum)
+
+	for rank, q := range s.quantiles {
+		qs = append(qs, &dto.Quantile{
+			Quantile: proto.Float64(rank),
+			Value:    proto.Float64(q),
+		})
+	}
+
+	if len(qs) > 0 {
+		sort.Sort(quantSort(qs))
+	}
+	sum.Quantile = qs
+
+	out.Summary = sum
+	out.Label = s.labelPairs
+
+	return nil
+}
+
+// NewConstSummary returns a metric representing a Prometheus summary with fixed
+// values for the count, sum, and quantiles. As those parameters cannot be
+// changed, the returned value does not implement the Summary interface (but
+// only the Metric interface). Users of this package will not have much use for
+// it in regular operations. However, when implementing custom Collectors, it is
+// useful as a throw-away metric that is generated on the fly to send it to
+// Prometheus in the Collect method.
+//
+// quantiles maps ranks to quantile values. For example, a median latency of
+// 0.23s and a 99th percentile latency of 0.56s would be expressed as:
+//     map[float64]float64{0.5: 0.23, 0.99: 0.56}
+//
+// NewConstSummary returns an error if the length of labelValues is not
+// consistent with the variable labels in Desc.
+func NewConstSummary(
+	desc *Desc,
+	count uint64,
+	sum float64,
+	quantiles map[float64]float64,
+	labelValues ...string,
+) (Metric, error) {
+	if len(desc.variableLabels) != len(labelValues) {
+		return nil, errInconsistentCardinality
+	}
+	return &constSummary{
+		desc:       desc,
+		count:      count,
+		sum:        sum,
+		quantiles:  quantiles,
+		labelPairs: makeLabelPairs(desc, labelValues),
+	}, nil
+}
+
+// MustNewConstSummary is a version of NewConstSummary that panics where
+// NewConstMetric would have returned an error.
+func MustNewConstSummary(
+	desc *Desc,
+	count uint64,
+	sum float64,
+	quantiles map[float64]float64,
+	labelValues ...string,
+) Metric {
+	m, err := NewConstSummary(desc, count, sum, quantiles, labelValues...)
+	if err != nil {
+		panic(err)
+	}
+	return m
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/summary_test.go b/vendor/github.com/prometheus/client_golang/prometheus/summary_test.go
new file mode 100644
index 000000000..c4575ffbd
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/summary_test.go
@@ -0,0 +1,347 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"math"
+	"math/rand"
+	"sort"
+	"sync"
+	"testing"
+	"testing/quick"
+	"time"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+func benchmarkSummaryObserve(w int, b *testing.B) {
+	b.StopTimer()
+
+	wg := new(sync.WaitGroup)
+	wg.Add(w)
+
+	g := new(sync.WaitGroup)
+	g.Add(1)
+
+	s := NewSummary(SummaryOpts{})
+
+	for i := 0; i < w; i++ {
+		go func() {
+			g.Wait()
+
+			for i := 0; i < b.N; i++ {
+				s.Observe(float64(i))
+			}
+
+			wg.Done()
+		}()
+	}
+
+	b.StartTimer()
+	g.Done()
+	wg.Wait()
+}
+
+func BenchmarkSummaryObserve1(b *testing.B) {
+	benchmarkSummaryObserve(1, b)
+}
+
+func BenchmarkSummaryObserve2(b *testing.B) {
+	benchmarkSummaryObserve(2, b)
+}
+
+func BenchmarkSummaryObserve4(b *testing.B) {
+	benchmarkSummaryObserve(4, b)
+}
+
+func BenchmarkSummaryObserve8(b *testing.B) {
+	benchmarkSummaryObserve(8, b)
+}
+
+func benchmarkSummaryWrite(w int, b *testing.B) {
+	b.StopTimer()
+
+	wg := new(sync.WaitGroup)
+	wg.Add(w)
+
+	g := new(sync.WaitGroup)
+	g.Add(1)
+
+	s := NewSummary(SummaryOpts{})
+
+	for i := 0; i < 1000000; i++ {
+		s.Observe(float64(i))
+	}
+
+	for j := 0; j < w; j++ {
+		outs := make([]dto.Metric, b.N)
+
+		go func(o []dto.Metric) {
+			g.Wait()
+
+			for i := 0; i < b.N; i++ {
+				s.Write(&o[i])
+			}
+
+			wg.Done()
+		}(outs)
+	}
+
+	b.StartTimer()
+	g.Done()
+	wg.Wait()
+}
+
+func BenchmarkSummaryWrite1(b *testing.B) {
+	benchmarkSummaryWrite(1, b)
+}
+
+func BenchmarkSummaryWrite2(b *testing.B) {
+	benchmarkSummaryWrite(2, b)
+}
+
+func BenchmarkSummaryWrite4(b *testing.B) {
+	benchmarkSummaryWrite(4, b)
+}
+
+func BenchmarkSummaryWrite8(b *testing.B) {
+	benchmarkSummaryWrite(8, b)
+}
+
+func TestSummaryConcurrency(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping test in short mode.")
+	}
+
+	rand.Seed(42)
+
+	it := func(n uint32) bool {
+		mutations := int(n%1e4 + 1e4)
+		concLevel := int(n%5 + 1)
+		total := mutations * concLevel
+
+		var start, end sync.WaitGroup
+		start.Add(1)
+		end.Add(concLevel)
+
+		sum := NewSummary(SummaryOpts{
+			Name: "test_summary",
+			Help: "helpless",
+		})
+
+		allVars := make([]float64, total)
+		var sampleSum float64
+		for i := 0; i < concLevel; i++ {
+			vals := make([]float64, mutations)
+			for j := 0; j < mutations; j++ {
+				v := rand.NormFloat64()
+				vals[j] = v
+				allVars[i*mutations+j] = v
+				sampleSum += v
+			}
+
+			go func(vals []float64) {
+				start.Wait()
+				for _, v := range vals {
+					sum.Observe(v)
+				}
+				end.Done()
+			}(vals)
+		}
+		sort.Float64s(allVars)
+		start.Done()
+		end.Wait()
+
+		m := &dto.Metric{}
+		sum.Write(m)
+		if got, want := int(*m.Summary.SampleCount), total; got != want {
+			t.Errorf("got sample count %d, want %d", got, want)
+		}
+		if got, want := *m.Summary.SampleSum, sampleSum; math.Abs((got-want)/want) > 0.001 {
+			t.Errorf("got sample sum %f, want %f", got, want)
+		}
+
+		objectives := make([]float64, 0, len(DefObjectives))
+		for qu := range DefObjectives {
+			objectives = append(objectives, qu)
+		}
+		sort.Float64s(objectives)
+
+		for i, wantQ := range objectives {
+			ε := DefObjectives[wantQ]
+			gotQ := *m.Summary.Quantile[i].Quantile
+			gotV := *m.Summary.Quantile[i].Value
+			min, max := getBounds(allVars, wantQ, ε)
+			if gotQ != wantQ {
+				t.Errorf("got quantile %f, want %f", gotQ, wantQ)
+			}
+			if gotV < min || gotV > max {
+				t.Errorf("got %f for quantile %f, want [%f,%f]", gotV, gotQ, min, max)
+			}
+		}
+		return true
+	}
+
+	if err := quick.Check(it, nil); err != nil {
+		t.Error(err)
+	}
+}
+
+func TestSummaryVecConcurrency(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping test in short mode.")
+	}
+
+	rand.Seed(42)
+
+	objectives := make([]float64, 0, len(DefObjectives))
+	for qu := range DefObjectives {
+
+		objectives = append(objectives, qu)
+	}
+	sort.Float64s(objectives)
+
+	it := func(n uint32) bool {
+		mutations := int(n%1e4 + 1e4)
+		concLevel := int(n%7 + 1)
+		vecLength := int(n%3 + 1)
+
+		var start, end sync.WaitGroup
+		start.Add(1)
+		end.Add(concLevel)
+
+		sum := NewSummaryVec(
+			SummaryOpts{
+				Name: "test_summary",
+				Help: "helpless",
+			},
+			[]string{"label"},
+		)
+
+		allVars := make([][]float64, vecLength)
+		sampleSums := make([]float64, vecLength)
+		for i := 0; i < concLevel; i++ {
+			vals := make([]float64, mutations)
+			picks := make([]int, mutations)
+			for j := 0; j < mutations; j++ {
+				v := rand.NormFloat64()
+				vals[j] = v
+				pick := rand.Intn(vecLength)
+				picks[j] = pick
+				allVars[pick] = append(allVars[pick], v)
+				sampleSums[pick] += v
+			}
+
+			go func(vals []float64) {
+				start.Wait()
+				for i, v := range vals {
+					sum.WithLabelValues(string('A' + picks[i])).Observe(v)
+				}
+				end.Done()
+			}(vals)
+		}
+		for _, vars := range allVars {
+			sort.Float64s(vars)
+		}
+		start.Done()
+		end.Wait()
+
+		for i := 0; i < vecLength; i++ {
+			m := &dto.Metric{}
+			s := sum.WithLabelValues(string('A' + i))
+			s.Write(m)
+			if got, want := int(*m.Summary.SampleCount), len(allVars[i]); got != want {
+				t.Errorf("got sample count %d for label %c, want %d", got, 'A'+i, want)
+			}
+			if got, want := *m.Summary.SampleSum, sampleSums[i]; math.Abs((got-want)/want) > 0.001 {
+				t.Errorf("got sample sum %f for label %c, want %f", got, 'A'+i, want)
+			}
+			for j, wantQ := range objectives {
+				ε := DefObjectives[wantQ]
+				gotQ := *m.Summary.Quantile[j].Quantile
+				gotV := *m.Summary.Quantile[j].Value
+				min, max := getBounds(allVars[i], wantQ, ε)
+				if gotQ != wantQ {
+					t.Errorf("got quantile %f for label %c, want %f", gotQ, 'A'+i, wantQ)
+				}
+				if gotV < min || gotV > max {
+					t.Errorf("got %f for quantile %f for label %c, want [%f,%f]", gotV, gotQ, 'A'+i, min, max)
+				}
+			}
+		}
+		return true
+	}
+
+	if err := quick.Check(it, nil); err != nil {
+		t.Error(err)
+	}
+}
+
+func TestSummaryDecay(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping test in short mode.")
+		// More because it depends on timing than because it is particularly long...
+	}
+
+	sum := NewSummary(SummaryOpts{
+		Name:       "test_summary",
+		Help:       "helpless",
+		MaxAge:     100 * time.Millisecond,
+		Objectives: map[float64]float64{0.1: 0.001},
+		AgeBuckets: 10,
+	})
+
+	m := &dto.Metric{}
+	i := 0
+	tick := time.NewTicker(time.Millisecond)
+	for _ = range tick.C {
+		i++
+		sum.Observe(float64(i))
+		if i%10 == 0 {
+			sum.Write(m)
+			if got, want := *m.Summary.Quantile[0].Value, math.Max(float64(i)/10, float64(i-90)); math.Abs(got-want) > 20 {
+				t.Errorf("%d. got %f, want %f", i, got, want)
+			}
+			m.Reset()
+		}
+		if i >= 1000 {
+			break
+		}
+	}
+	tick.Stop()
+	// Wait for MaxAge without observations and make sure quantiles are NaN.
+	time.Sleep(100 * time.Millisecond)
+	sum.Write(m)
+	if got := *m.Summary.Quantile[0].Value; !math.IsNaN(got) {
+		t.Errorf("got %f, want NaN after expiration", got)
+	}
+}
+
+func getBounds(vars []float64, q, ε float64) (min, max float64) {
+	// TODO(beorn7): This currently tolerates an error of up to 2*ε. The
+	// error must be at most ε, but for some reason, it's sometimes slightly
+	// higher. That's a bug.
+	n := float64(len(vars))
+	lower := int((q - 2*ε) * n)
+	upper := int(math.Ceil((q + 2*ε) * n))
+	min = vars[0]
+	if lower > 1 {
+		min = vars[lower-1]
+	}
+	max = vars[len(vars)-1]
+	if upper < len(vars) {
+		max = vars[upper-1]
+	}
+	return
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/untyped.go b/vendor/github.com/prometheus/client_golang/prometheus/untyped.go
new file mode 100644
index 000000000..5faf7e6e3
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/untyped.go
@@ -0,0 +1,138 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+// Untyped is a Metric that represents a single numerical value that can
+// arbitrarily go up and down.
+//
+// An Untyped metric works the same as a Gauge. The only difference is that to
+// no type information is implied.
+//
+// To create Untyped instances, use NewUntyped.
+type Untyped interface {
+	Metric
+	Collector
+
+	// Set sets the Untyped metric to an arbitrary value.
+	Set(float64)
+	// Inc increments the Untyped metric by 1.
+	Inc()
+	// Dec decrements the Untyped metric by 1.
+	Dec()
+	// Add adds the given value to the Untyped metric. (The value can be
+	// negative, resulting in a decrease.)
+	Add(float64)
+	// Sub subtracts the given value from the Untyped metric. (The value can
+	// be negative, resulting in an increase.)
+	Sub(float64)
+}
+
+// UntypedOpts is an alias for Opts. See there for doc comments.
+type UntypedOpts Opts
+
+// NewUntyped creates a new Untyped metric from the provided UntypedOpts.
+func NewUntyped(opts UntypedOpts) Untyped {
+	return newValue(NewDesc(
+		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		opts.Help,
+		nil,
+		opts.ConstLabels,
+	), UntypedValue, 0)
+}
+
+// UntypedVec is a Collector that bundles a set of Untyped metrics that all
+// share the same Desc, but have different values for their variable
+// labels. This is used if you want to count the same thing partitioned by
+// various dimensions. Create instances with NewUntypedVec.
+type UntypedVec struct {
+	*MetricVec
+}
+
+// NewUntypedVec creates a new UntypedVec based on the provided UntypedOpts and
+// partitioned by the given label names. At least one label name must be
+// provided.
+func NewUntypedVec(opts UntypedOpts, labelNames []string) *UntypedVec {
+	desc := NewDesc(
+		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		opts.Help,
+		labelNames,
+		opts.ConstLabels,
+	)
+	return &UntypedVec{
+		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
+			return newValue(desc, UntypedValue, 0, lvs...)
+		}),
+	}
+}
+
+// GetMetricWithLabelValues replaces the method of the same name in
+// MetricVec. The difference is that this method returns an Untyped and not a
+// Metric so that no type conversion is required.
+func (m *UntypedVec) GetMetricWithLabelValues(lvs ...string) (Untyped, error) {
+	metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...)
+	if metric != nil {
+		return metric.(Untyped), err
+	}
+	return nil, err
+}
+
+// GetMetricWith replaces the method of the same name in MetricVec. The
+// difference is that this method returns an Untyped and not a Metric so that no
+// type conversion is required.
+func (m *UntypedVec) GetMetricWith(labels Labels) (Untyped, error) {
+	metric, err := m.MetricVec.GetMetricWith(labels)
+	if metric != nil {
+		return metric.(Untyped), err
+	}
+	return nil, err
+}
+
+// WithLabelValues works as GetMetricWithLabelValues, but panics where
+// GetMetricWithLabelValues would have returned an error. By not returning an
+// error, WithLabelValues allows shortcuts like
+//     myVec.WithLabelValues("404", "GET").Add(42)
+func (m *UntypedVec) WithLabelValues(lvs ...string) Untyped {
+	return m.MetricVec.WithLabelValues(lvs...).(Untyped)
+}
+
+// With works as GetMetricWith, but panics where GetMetricWithLabels would have
+// returned an error. By not returning an error, With allows shortcuts like
+//     myVec.With(Labels{"code": "404", "method": "GET"}).Add(42)
+func (m *UntypedVec) With(labels Labels) Untyped {
+	return m.MetricVec.With(labels).(Untyped)
+}
+
+// UntypedFunc is an Untyped whose value is determined at collect time by
+// calling a provided function.
+//
+// To create UntypedFunc instances, use NewUntypedFunc.
+type UntypedFunc interface {
+	Metric
+	Collector
+}
+
+// NewUntypedFunc creates a new UntypedFunc based on the provided
+// UntypedOpts. The value reported is determined by calling the given function
+// from within the Write method. Take into account that metric collection may
+// happen concurrently. If that results in concurrent calls to Write, like in
+// the case where an UntypedFunc is directly registered with Prometheus, the
+// provided function must be concurrency-safe.
+func NewUntypedFunc(opts UntypedOpts, function func() float64) UntypedFunc {
+	return newValueFunc(NewDesc(
+		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		opts.Help,
+		nil,
+		opts.ConstLabels,
+	), UntypedValue, function)
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/value.go b/vendor/github.com/prometheus/client_golang/prometheus/value.go
new file mode 100644
index 000000000..a944c3775
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/value.go
@@ -0,0 +1,234 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"errors"
+	"fmt"
+	"math"
+	"sort"
+	"sync/atomic"
+
+	dto "github.com/prometheus/client_model/go"
+
+	"github.com/golang/protobuf/proto"
+)
+
+// ValueType is an enumeration of metric types that represent a simple value.
+type ValueType int
+
+// Possible values for the ValueType enum.
+const (
+	_ ValueType = iota
+	CounterValue
+	GaugeValue
+	UntypedValue
+)
+
+var errInconsistentCardinality = errors.New("inconsistent label cardinality")
+
+// value is a generic metric for simple values. It implements Metric, Collector,
+// Counter, Gauge, and Untyped. Its effective type is determined by
+// ValueType. This is a low-level building block used by the library to back the
+// implementations of Counter, Gauge, and Untyped.
+type value struct {
+	// valBits containst the bits of the represented float64 value. It has
+	// to go first in the struct to guarantee alignment for atomic
+	// operations.  http://golang.org/pkg/sync/atomic/#pkg-note-BUG
+	valBits uint64
+
+	selfCollector
+
+	desc       *Desc
+	valType    ValueType
+	labelPairs []*dto.LabelPair
+}
+
+// newValue returns a newly allocated value with the given Desc, ValueType,
+// sample value and label values. It panics if the number of label
+// values is different from the number of variable labels in Desc.
+func newValue(desc *Desc, valueType ValueType, val float64, labelValues ...string) *value {
+	if len(labelValues) != len(desc.variableLabels) {
+		panic(errInconsistentCardinality)
+	}
+	result := &value{
+		desc:       desc,
+		valType:    valueType,
+		valBits:    math.Float64bits(val),
+		labelPairs: makeLabelPairs(desc, labelValues),
+	}
+	result.init(result)
+	return result
+}
+
+func (v *value) Desc() *Desc {
+	return v.desc
+}
+
+func (v *value) Set(val float64) {
+	atomic.StoreUint64(&v.valBits, math.Float64bits(val))
+}
+
+func (v *value) Inc() {
+	v.Add(1)
+}
+
+func (v *value) Dec() {
+	v.Add(-1)
+}
+
+func (v *value) Add(val float64) {
+	for {
+		oldBits := atomic.LoadUint64(&v.valBits)
+		newBits := math.Float64bits(math.Float64frombits(oldBits) + val)
+		if atomic.CompareAndSwapUint64(&v.valBits, oldBits, newBits) {
+			return
+		}
+	}
+}
+
+func (v *value) Sub(val float64) {
+	v.Add(val * -1)
+}
+
+func (v *value) Write(out *dto.Metric) error {
+	val := math.Float64frombits(atomic.LoadUint64(&v.valBits))
+	return populateMetric(v.valType, val, v.labelPairs, out)
+}
+
+// valueFunc is a generic metric for simple values retrieved on collect time
+// from a function. It implements Metric and Collector. Its effective type is
+// determined by ValueType. This is a low-level building block used by the
+// library to back the implementations of CounterFunc, GaugeFunc, and
+// UntypedFunc.
+type valueFunc struct {
+	selfCollector
+
+	desc       *Desc
+	valType    ValueType
+	function   func() float64
+	labelPairs []*dto.LabelPair
+}
+
+// newValueFunc returns a newly allocated valueFunc with the given Desc and
+// ValueType. The value reported is determined by calling the given function
+// from within the Write method. Take into account that metric collection may
+// happen concurrently. If that results in concurrent calls to Write, like in
+// the case where a valueFunc is directly registered with Prometheus, the
+// provided function must be concurrency-safe.
+func newValueFunc(desc *Desc, valueType ValueType, function func() float64) *valueFunc {
+	result := &valueFunc{
+		desc:       desc,
+		valType:    valueType,
+		function:   function,
+		labelPairs: makeLabelPairs(desc, nil),
+	}
+	result.init(result)
+	return result
+}
+
+func (v *valueFunc) Desc() *Desc {
+	return v.desc
+}
+
+func (v *valueFunc) Write(out *dto.Metric) error {
+	return populateMetric(v.valType, v.function(), v.labelPairs, out)
+}
+
+// NewConstMetric returns a metric with one fixed value that cannot be
+// changed. Users of this package will not have much use for it in regular
+// operations. However, when implementing custom Collectors, it is useful as a
+// throw-away metric that is generated on the fly to send it to Prometheus in
+// the Collect method. NewConstMetric returns an error if the length of
+// labelValues is not consistent with the variable labels in Desc.
+func NewConstMetric(desc *Desc, valueType ValueType, value float64, labelValues ...string) (Metric, error) {
+	if len(desc.variableLabels) != len(labelValues) {
+		return nil, errInconsistentCardinality
+	}
+	return &constMetric{
+		desc:       desc,
+		valType:    valueType,
+		val:        value,
+		labelPairs: makeLabelPairs(desc, labelValues),
+	}, nil
+}
+
+// MustNewConstMetric is a version of NewConstMetric that panics where
+// NewConstMetric would have returned an error.
+func MustNewConstMetric(desc *Desc, valueType ValueType, value float64, labelValues ...string) Metric {
+	m, err := NewConstMetric(desc, valueType, value, labelValues...)
+	if err != nil {
+		panic(err)
+	}
+	return m
+}
+
+type constMetric struct {
+	desc       *Desc
+	valType    ValueType
+	val        float64
+	labelPairs []*dto.LabelPair
+}
+
+func (m *constMetric) Desc() *Desc {
+	return m.desc
+}
+
+func (m *constMetric) Write(out *dto.Metric) error {
+	return populateMetric(m.valType, m.val, m.labelPairs, out)
+}
+
+func populateMetric(
+	t ValueType,
+	v float64,
+	labelPairs []*dto.LabelPair,
+	m *dto.Metric,
+) error {
+	m.Label = labelPairs
+	switch t {
+	case CounterValue:
+		m.Counter = &dto.Counter{Value: proto.Float64(v)}
+	case GaugeValue:
+		m.Gauge = &dto.Gauge{Value: proto.Float64(v)}
+	case UntypedValue:
+		m.Untyped = &dto.Untyped{Value: proto.Float64(v)}
+	default:
+		return fmt.Errorf("encountered unknown type %v", t)
+	}
+	return nil
+}
+
+func makeLabelPairs(desc *Desc, labelValues []string) []*dto.LabelPair {
+	totalLen := len(desc.variableLabels) + len(desc.constLabelPairs)
+	if totalLen == 0 {
+		// Super fast path.
+		return nil
+	}
+	if len(desc.variableLabels) == 0 {
+		// Moderately fast path.
+		return desc.constLabelPairs
+	}
+	labelPairs := make([]*dto.LabelPair, 0, totalLen)
+	for i, n := range desc.variableLabels {
+		labelPairs = append(labelPairs, &dto.LabelPair{
+			Name:  proto.String(n),
+			Value: proto.String(labelValues[i]),
+		})
+	}
+	for _, lp := range desc.constLabelPairs {
+		labelPairs = append(labelPairs, lp)
+	}
+	sort.Sort(LabelPairSorter(labelPairs))
+	return labelPairs
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/vec.go b/vendor/github.com/prometheus/client_golang/prometheus/vec.go
new file mode 100644
index 000000000..7f3eef9a4
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/vec.go
@@ -0,0 +1,404 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"fmt"
+	"sync"
+
+	"github.com/prometheus/common/model"
+)
+
+// MetricVec is a Collector to bundle metrics of the same name that
+// differ in their label values. MetricVec is usually not used directly but as a
+// building block for implementations of vectors of a given metric
+// type. GaugeVec, CounterVec, SummaryVec, and UntypedVec are examples already
+// provided in this package.
+type MetricVec struct {
+	mtx      sync.RWMutex // Protects the children.
+	children map[uint64][]metricWithLabelValues
+	desc     *Desc
+
+	newMetric   func(labelValues ...string) Metric
+	hashAdd     func(h uint64, s string) uint64 // replace hash function for testing collision handling
+	hashAddByte func(h uint64, b byte) uint64
+}
+
+// newMetricVec returns an initialized MetricVec. The concrete value is
+// returned for embedding into another struct.
+func newMetricVec(desc *Desc, newMetric func(lvs ...string) Metric) *MetricVec {
+	return &MetricVec{
+		children:    map[uint64][]metricWithLabelValues{},
+		desc:        desc,
+		newMetric:   newMetric,
+		hashAdd:     hashAdd,
+		hashAddByte: hashAddByte,
+	}
+}
+
+// metricWithLabelValues provides the metric and its label values for
+// disambiguation on hash collision.
+type metricWithLabelValues struct {
+	values []string
+	metric Metric
+}
+
+// Describe implements Collector. The length of the returned slice
+// is always one.
+func (m *MetricVec) Describe(ch chan<- *Desc) {
+	ch <- m.desc
+}
+
+// Collect implements Collector.
+func (m *MetricVec) Collect(ch chan<- Metric) {
+	m.mtx.RLock()
+	defer m.mtx.RUnlock()
+
+	for _, metrics := range m.children {
+		for _, metric := range metrics {
+			ch <- metric.metric
+		}
+	}
+}
+
+// GetMetricWithLabelValues returns the Metric for the given slice of label
+// values (same order as the VariableLabels in Desc). If that combination of
+// label values is accessed for the first time, a new Metric is created.
+//
+// It is possible to call this method without using the returned Metric to only
+// create the new Metric but leave it at its start value (e.g. a Summary or
+// Histogram without any observations). See also the SummaryVec example.
+//
+// Keeping the Metric for later use is possible (and should be considered if
+// performance is critical), but keep in mind that Reset, DeleteLabelValues and
+// Delete can be used to delete the Metric from the MetricVec. In that case, the
+// Metric will still exist, but it will not be exported anymore, even if a
+// Metric with the same label values is created later. See also the CounterVec
+// example.
+//
+// An error is returned if the number of label values is not the same as the
+// number of VariableLabels in Desc.
+//
+// Note that for more than one label value, this method is prone to mistakes
+// caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as
+// an alternative to avoid that type of mistake. For higher label numbers, the
+// latter has a much more readable (albeit more verbose) syntax, but it comes
+// with a performance overhead (for creating and processing the Labels map).
+// See also the GaugeVec example.
+func (m *MetricVec) GetMetricWithLabelValues(lvs ...string) (Metric, error) {
+	h, err := m.hashLabelValues(lvs)
+	if err != nil {
+		return nil, err
+	}
+
+	return m.getOrCreateMetricWithLabelValues(h, lvs), nil
+}
+
+// GetMetricWith returns the Metric for the given Labels map (the label names
+// must match those of the VariableLabels in Desc). If that label map is
+// accessed for the first time, a new Metric is created. Implications of
+// creating a Metric without using it and keeping the Metric for later use are
+// the same as for GetMetricWithLabelValues.
+//
+// An error is returned if the number and names of the Labels are inconsistent
+// with those of the VariableLabels in Desc.
+//
+// This method is used for the same purpose as
+// GetMetricWithLabelValues(...string). See there for pros and cons of the two
+// methods.
+func (m *MetricVec) GetMetricWith(labels Labels) (Metric, error) {
+	h, err := m.hashLabels(labels)
+	if err != nil {
+		return nil, err
+	}
+
+	return m.getOrCreateMetricWithLabels(h, labels), nil
+}
+
+// WithLabelValues works as GetMetricWithLabelValues, but panics if an error
+// occurs. The method allows neat syntax like:
+//     httpReqs.WithLabelValues("404", "POST").Inc()
+func (m *MetricVec) WithLabelValues(lvs ...string) Metric {
+	metric, err := m.GetMetricWithLabelValues(lvs...)
+	if err != nil {
+		panic(err)
+	}
+	return metric
+}
+
+// With works as GetMetricWith, but panics if an error occurs. The method allows
+// neat syntax like:
+//     httpReqs.With(Labels{"status":"404", "method":"POST"}).Inc()
+func (m *MetricVec) With(labels Labels) Metric {
+	metric, err := m.GetMetricWith(labels)
+	if err != nil {
+		panic(err)
+	}
+	return metric
+}
+
+// DeleteLabelValues removes the metric where the variable labels are the same
+// as those passed in as labels (same order as the VariableLabels in Desc). It
+// returns true if a metric was deleted.
+//
+// It is not an error if the number of label values is not the same as the
+// number of VariableLabels in Desc.  However, such inconsistent label count can
+// never match an actual Metric, so the method will always return false in that
+// case.
+//
+// Note that for more than one label value, this method is prone to mistakes
+// caused by an incorrect order of arguments. Consider Delete(Labels) as an
+// alternative to avoid that type of mistake. For higher label numbers, the
+// latter has a much more readable (albeit more verbose) syntax, but it comes
+// with a performance overhead (for creating and processing the Labels map).
+// See also the CounterVec example.
+func (m *MetricVec) DeleteLabelValues(lvs ...string) bool {
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+
+	h, err := m.hashLabelValues(lvs)
+	if err != nil {
+		return false
+	}
+	return m.deleteByHashWithLabelValues(h, lvs)
+}
+
+// Delete deletes the metric where the variable labels are the same as those
+// passed in as labels. It returns true if a metric was deleted.
+//
+// It is not an error if the number and names of the Labels are inconsistent
+// with those of the VariableLabels in the Desc of the MetricVec. However, such
+// inconsistent Labels can never match an actual Metric, so the method will
+// always return false in that case.
+//
+// This method is used for the same purpose as DeleteLabelValues(...string). See
+// there for pros and cons of the two methods.
+func (m *MetricVec) Delete(labels Labels) bool {
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+
+	h, err := m.hashLabels(labels)
+	if err != nil {
+		return false
+	}
+
+	return m.deleteByHashWithLabels(h, labels)
+}
+
+// deleteByHashWithLabelValues removes the metric from the hash bucket h. If
+// there are multiple matches in the bucket, use lvs to select a metric and
+// remove only that metric.
+func (m *MetricVec) deleteByHashWithLabelValues(h uint64, lvs []string) bool {
+	metrics, ok := m.children[h]
+	if !ok {
+		return false
+	}
+
+	i := m.findMetricWithLabelValues(metrics, lvs)
+	if i >= len(metrics) {
+		return false
+	}
+
+	if len(metrics) > 1 {
+		m.children[h] = append(metrics[:i], metrics[i+1:]...)
+	} else {
+		delete(m.children, h)
+	}
+	return true
+}
+
+// deleteByHashWithLabels removes the metric from the hash bucket h. If there
+// are multiple matches in the bucket, use lvs to select a metric and remove
+// only that metric.
+func (m *MetricVec) deleteByHashWithLabels(h uint64, labels Labels) bool {
+	metrics, ok := m.children[h]
+	if !ok {
+		return false
+	}
+	i := m.findMetricWithLabels(metrics, labels)
+	if i >= len(metrics) {
+		return false
+	}
+
+	if len(metrics) > 1 {
+		m.children[h] = append(metrics[:i], metrics[i+1:]...)
+	} else {
+		delete(m.children, h)
+	}
+	return true
+}
+
+// Reset deletes all metrics in this vector.
+func (m *MetricVec) Reset() {
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+
+	for h := range m.children {
+		delete(m.children, h)
+	}
+}
+
+func (m *MetricVec) hashLabelValues(vals []string) (uint64, error) {
+	if len(vals) != len(m.desc.variableLabels) {
+		return 0, errInconsistentCardinality
+	}
+	h := hashNew()
+	for _, val := range vals {
+		h = m.hashAdd(h, val)
+		h = m.hashAddByte(h, model.SeparatorByte)
+	}
+	return h, nil
+}
+
+func (m *MetricVec) hashLabels(labels Labels) (uint64, error) {
+	if len(labels) != len(m.desc.variableLabels) {
+		return 0, errInconsistentCardinality
+	}
+	h := hashNew()
+	for _, label := range m.desc.variableLabels {
+		val, ok := labels[label]
+		if !ok {
+			return 0, fmt.Errorf("label name %q missing in label map", label)
+		}
+		h = m.hashAdd(h, val)
+		h = m.hashAddByte(h, model.SeparatorByte)
+	}
+	return h, nil
+}
+
+// getOrCreateMetricWithLabelValues retrieves the metric by hash and label value
+// or creates it and returns the new one.
+//
+// This function holds the mutex.
+func (m *MetricVec) getOrCreateMetricWithLabelValues(hash uint64, lvs []string) Metric {
+	m.mtx.RLock()
+	metric, ok := m.getMetricWithLabelValues(hash, lvs)
+	m.mtx.RUnlock()
+	if ok {
+		return metric
+	}
+
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	metric, ok = m.getMetricWithLabelValues(hash, lvs)
+	if !ok {
+		// Copy to avoid allocation in case wo don't go down this code path.
+		copiedLVs := make([]string, len(lvs))
+		copy(copiedLVs, lvs)
+		metric = m.newMetric(copiedLVs...)
+		m.children[hash] = append(m.children[hash], metricWithLabelValues{values: copiedLVs, metric: metric})
+	}
+	return metric
+}
+
+// getOrCreateMetricWithLabelValues retrieves the metric by hash and label value
+// or creates it and returns the new one.
+//
+// This function holds the mutex.
+func (m *MetricVec) getOrCreateMetricWithLabels(hash uint64, labels Labels) Metric {
+	m.mtx.RLock()
+	metric, ok := m.getMetricWithLabels(hash, labels)
+	m.mtx.RUnlock()
+	if ok {
+		return metric
+	}
+
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	metric, ok = m.getMetricWithLabels(hash, labels)
+	if !ok {
+		lvs := m.extractLabelValues(labels)
+		metric = m.newMetric(lvs...)
+		m.children[hash] = append(m.children[hash], metricWithLabelValues{values: lvs, metric: metric})
+	}
+	return metric
+}
+
+// getMetricWithLabelValues gets a metric while handling possible collisions in
+// the hash space. Must be called while holding read mutex.
+func (m *MetricVec) getMetricWithLabelValues(h uint64, lvs []string) (Metric, bool) {
+	metrics, ok := m.children[h]
+	if ok {
+		if i := m.findMetricWithLabelValues(metrics, lvs); i < len(metrics) {
+			return metrics[i].metric, true
+		}
+	}
+	return nil, false
+}
+
+// getMetricWithLabels gets a metric while handling possible collisions in
+// the hash space. Must be called while holding read mutex.
+func (m *MetricVec) getMetricWithLabels(h uint64, labels Labels) (Metric, bool) {
+	metrics, ok := m.children[h]
+	if ok {
+		if i := m.findMetricWithLabels(metrics, labels); i < len(metrics) {
+			return metrics[i].metric, true
+		}
+	}
+	return nil, false
+}
+
+// findMetricWithLabelValues returns the index of the matching metric or
+// len(metrics) if not found.
+func (m *MetricVec) findMetricWithLabelValues(metrics []metricWithLabelValues, lvs []string) int {
+	for i, metric := range metrics {
+		if m.matchLabelValues(metric.values, lvs) {
+			return i
+		}
+	}
+	return len(metrics)
+}
+
+// findMetricWithLabels returns the index of the matching metric or len(metrics)
+// if not found.
+func (m *MetricVec) findMetricWithLabels(metrics []metricWithLabelValues, labels Labels) int {
+	for i, metric := range metrics {
+		if m.matchLabels(metric.values, labels) {
+			return i
+		}
+	}
+	return len(metrics)
+}
+
+func (m *MetricVec) matchLabelValues(values []string, lvs []string) bool {
+	if len(values) != len(lvs) {
+		return false
+	}
+	for i, v := range values {
+		if v != lvs[i] {
+			return false
+		}
+	}
+	return true
+}
+
+func (m *MetricVec) matchLabels(values []string, labels Labels) bool {
+	if len(labels) != len(values) {
+		return false
+	}
+	for i, k := range m.desc.variableLabels {
+		if values[i] != labels[k] {
+			return false
+		}
+	}
+	return true
+}
+
+func (m *MetricVec) extractLabelValues(labels Labels) []string {
+	labelValues := make([]string, len(labels))
+	for i, k := range m.desc.variableLabels {
+		labelValues[i] = labels[k]
+	}
+	return labelValues
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/vec_test.go b/vendor/github.com/prometheus/client_golang/prometheus/vec_test.go
new file mode 100644
index 000000000..445a6b39f
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/vec_test.go
@@ -0,0 +1,312 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"fmt"
+	"testing"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+func TestDelete(t *testing.T) {
+	vec := NewUntypedVec(
+		UntypedOpts{
+			Name: "test",
+			Help: "helpless",
+		},
+		[]string{"l1", "l2"},
+	)
+	testDelete(t, vec)
+}
+
+func TestDeleteWithCollisions(t *testing.T) {
+	vec := NewUntypedVec(
+		UntypedOpts{
+			Name: "test",
+			Help: "helpless",
+		},
+		[]string{"l1", "l2"},
+	)
+	vec.hashAdd = func(h uint64, s string) uint64 { return 1 }
+	vec.hashAddByte = func(h uint64, b byte) uint64 { return 1 }
+	testDelete(t, vec)
+}
+
+func testDelete(t *testing.T, vec *UntypedVec) {
+	if got, want := vec.Delete(Labels{"l1": "v1", "l2": "v2"}), false; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+
+	vec.With(Labels{"l1": "v1", "l2": "v2"}).(Untyped).Set(42)
+	if got, want := vec.Delete(Labels{"l1": "v1", "l2": "v2"}), true; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+	if got, want := vec.Delete(Labels{"l1": "v1", "l2": "v2"}), false; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+
+	vec.With(Labels{"l1": "v1", "l2": "v2"}).(Untyped).Set(42)
+	if got, want := vec.Delete(Labels{"l2": "v2", "l1": "v1"}), true; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+	if got, want := vec.Delete(Labels{"l2": "v2", "l1": "v1"}), false; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+
+	vec.With(Labels{"l1": "v1", "l2": "v2"}).(Untyped).Set(42)
+	if got, want := vec.Delete(Labels{"l2": "v1", "l1": "v2"}), false; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+	if got, want := vec.Delete(Labels{"l1": "v1"}), false; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+}
+
+func TestDeleteLabelValues(t *testing.T) {
+	vec := NewUntypedVec(
+		UntypedOpts{
+			Name: "test",
+			Help: "helpless",
+		},
+		[]string{"l1", "l2"},
+	)
+	testDeleteLabelValues(t, vec)
+}
+
+func TestDeleteLabelValuesWithCollisions(t *testing.T) {
+	vec := NewUntypedVec(
+		UntypedOpts{
+			Name: "test",
+			Help: "helpless",
+		},
+		[]string{"l1", "l2"},
+	)
+	vec.hashAdd = func(h uint64, s string) uint64 { return 1 }
+	vec.hashAddByte = func(h uint64, b byte) uint64 { return 1 }
+	testDeleteLabelValues(t, vec)
+}
+
+func testDeleteLabelValues(t *testing.T, vec *UntypedVec) {
+	if got, want := vec.DeleteLabelValues("v1", "v2"), false; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+
+	vec.With(Labels{"l1": "v1", "l2": "v2"}).(Untyped).Set(42)
+	vec.With(Labels{"l1": "v1", "l2": "v3"}).(Untyped).Set(42) // Add junk data for collision.
+	if got, want := vec.DeleteLabelValues("v1", "v2"), true; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+	if got, want := vec.DeleteLabelValues("v1", "v2"), false; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+	if got, want := vec.DeleteLabelValues("v1", "v3"), true; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+
+	vec.With(Labels{"l1": "v1", "l2": "v2"}).(Untyped).Set(42)
+	// Delete out of order.
+	if got, want := vec.DeleteLabelValues("v2", "v1"), false; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+	if got, want := vec.DeleteLabelValues("v1"), false; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+}
+
+func TestMetricVec(t *testing.T) {
+	vec := NewUntypedVec(
+		UntypedOpts{
+			Name: "test",
+			Help: "helpless",
+		},
+		[]string{"l1", "l2"},
+	)
+	testMetricVec(t, vec)
+}
+
+func TestMetricVecWithCollisions(t *testing.T) {
+	vec := NewUntypedVec(
+		UntypedOpts{
+			Name: "test",
+			Help: "helpless",
+		},
+		[]string{"l1", "l2"},
+	)
+	vec.hashAdd = func(h uint64, s string) uint64 { return 1 }
+	vec.hashAddByte = func(h uint64, b byte) uint64 { return 1 }
+	testMetricVec(t, vec)
+}
+
+func testMetricVec(t *testing.T, vec *UntypedVec) {
+	vec.Reset() // Actually test Reset now!
+
+	var pair [2]string
+	// Keep track of metrics.
+	expected := map[[2]string]int{}
+
+	for i := 0; i < 1000; i++ {
+		pair[0], pair[1] = fmt.Sprint(i%4), fmt.Sprint(i%5) // Varying combinations multiples.
+		expected[pair]++
+		vec.WithLabelValues(pair[0], pair[1]).Inc()
+
+		expected[[2]string{"v1", "v2"}]++
+		vec.WithLabelValues("v1", "v2").(Untyped).Inc()
+	}
+
+	var total int
+	for _, metrics := range vec.children {
+		for _, metric := range metrics {
+			total++
+			copy(pair[:], metric.values)
+
+			var metricOut dto.Metric
+			if err := metric.metric.Write(&metricOut); err != nil {
+				t.Fatal(err)
+			}
+			actual := *metricOut.Untyped.Value
+
+			var actualPair [2]string
+			for i, label := range metricOut.Label {
+				actualPair[i] = *label.Value
+			}
+
+			// Test output pair against metric.values to ensure we've selected
+			// the right one. We check this to ensure the below check means
+			// anything at all.
+			if actualPair != pair {
+				t.Fatalf("unexpected pair association in metric map: %v != %v", actualPair, pair)
+			}
+
+			if actual != float64(expected[pair]) {
+				t.Fatalf("incorrect counter value for %v: %v != %v", pair, actual, expected[pair])
+			}
+		}
+	}
+
+	if total != len(expected) {
+		t.Fatalf("unexpected number of metrics: %v != %v", total, len(expected))
+	}
+
+	vec.Reset()
+
+	if len(vec.children) > 0 {
+		t.Fatalf("reset failed")
+	}
+}
+
+func TestCounterVecEndToEndWithCollision(t *testing.T) {
+	vec := NewCounterVec(
+		CounterOpts{
+			Name: "test",
+			Help: "helpless",
+		},
+		[]string{"labelname"},
+	)
+	vec.WithLabelValues("77kepQFQ8Kl").Inc()
+	vec.WithLabelValues("!0IC=VloaY").Add(2)
+
+	m := &dto.Metric{}
+	if err := vec.WithLabelValues("77kepQFQ8Kl").Write(m); err != nil {
+		t.Fatal(err)
+	}
+	if got, want := m.GetLabel()[0].GetValue(), "77kepQFQ8Kl"; got != want {
+		t.Errorf("got label value %q, want %q", got, want)
+	}
+	if got, want := m.GetCounter().GetValue(), 1.; got != want {
+		t.Errorf("got value %f, want %f", got, want)
+	}
+	m.Reset()
+	if err := vec.WithLabelValues("!0IC=VloaY").Write(m); err != nil {
+		t.Fatal(err)
+	}
+	if got, want := m.GetLabel()[0].GetValue(), "!0IC=VloaY"; got != want {
+		t.Errorf("got label value %q, want %q", got, want)
+	}
+	if got, want := m.GetCounter().GetValue(), 2.; got != want {
+		t.Errorf("got value %f, want %f", got, want)
+	}
+}
+
+func BenchmarkMetricVecWithLabelValuesBasic(b *testing.B) {
+	benchmarkMetricVecWithLabelValues(b, map[string][]string{
+		"l1": []string{"onevalue"},
+		"l2": []string{"twovalue"},
+	})
+}
+
+func BenchmarkMetricVecWithLabelValues2Keys10ValueCardinality(b *testing.B) {
+	benchmarkMetricVecWithLabelValuesCardinality(b, 2, 10)
+}
+
+func BenchmarkMetricVecWithLabelValues4Keys10ValueCardinality(b *testing.B) {
+	benchmarkMetricVecWithLabelValuesCardinality(b, 4, 10)
+}
+
+func BenchmarkMetricVecWithLabelValues2Keys100ValueCardinality(b *testing.B) {
+	benchmarkMetricVecWithLabelValuesCardinality(b, 2, 100)
+}
+
+func BenchmarkMetricVecWithLabelValues10Keys100ValueCardinality(b *testing.B) {
+	benchmarkMetricVecWithLabelValuesCardinality(b, 10, 100)
+}
+
+func BenchmarkMetricVecWithLabelValues10Keys1000ValueCardinality(b *testing.B) {
+	benchmarkMetricVecWithLabelValuesCardinality(b, 10, 1000)
+}
+
+func benchmarkMetricVecWithLabelValuesCardinality(b *testing.B, nkeys, nvalues int) {
+	labels := map[string][]string{}
+
+	for i := 0; i < nkeys; i++ {
+		var (
+			k  = fmt.Sprintf("key-%v", i)
+			vs = make([]string, 0, nvalues)
+		)
+		for j := 0; j < nvalues; j++ {
+			vs = append(vs, fmt.Sprintf("value-%v", j))
+		}
+		labels[k] = vs
+	}
+
+	benchmarkMetricVecWithLabelValues(b, labels)
+}
+
+func benchmarkMetricVecWithLabelValues(b *testing.B, labels map[string][]string) {
+	var keys []string
+	for k := range labels { // Map order dependent, who cares though.
+		keys = append(keys, k)
+	}
+
+	values := make([]string, len(labels)) // Value cache for permutations.
+	vec := NewUntypedVec(
+		UntypedOpts{
+			Name: "test",
+			Help: "helpless",
+		},
+		keys,
+	)
+
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		// Varies input across provide map entries based on key size.
+		for j, k := range keys {
+			candidates := labels[k]
+			values[j] = candidates[i%len(candidates)]
+		}
+
+		vec.WithLabelValues(values...)
+	}
+}
diff --git a/vendor/github.com/prometheus/client_model/.gitignore b/vendor/github.com/prometheus/client_model/.gitignore
new file mode 100644
index 000000000..2f7896d1d
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/.gitignore
@@ -0,0 +1 @@
+target/
diff --git a/vendor/github.com/prometheus/client_model/AUTHORS.md b/vendor/github.com/prometheus/client_model/AUTHORS.md
new file mode 100644
index 000000000..e8b3efa6a
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/AUTHORS.md
@@ -0,0 +1,13 @@
+The Prometheus project was started by Matt T. Proud (emeritus) and
+Julius Volz in 2012.
+
+Maintainers of this repository:
+
+* Björn Rabenstein <beorn@soundcloud.com>
+
+The following individuals have contributed code to this repository
+(listed in alphabetical order):
+
+* Björn Rabenstein <beorn@soundcloud.com>
+* Matt T. Proud <matt.proud@gmail.com>
+* Tobias Schmidt <ts@soundcloud.com>
diff --git a/vendor/github.com/prometheus/client_model/CONTRIBUTING.md b/vendor/github.com/prometheus/client_model/CONTRIBUTING.md
new file mode 100644
index 000000000..573d58741
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/CONTRIBUTING.md
@@ -0,0 +1,18 @@
+# Contributing
+
+Prometheus uses GitHub to manage reviews of pull requests.
+
+* If you have a trivial fix or improvement, go ahead and create a pull
+  request, addressing (with `@...`) one or more of the maintainers
+  (see [AUTHORS.md](AUTHORS.md)) in the description of the pull request.
+
+* If you plan to do something more involved, first discuss your ideas
+  on our [mailing list](https://groups.google.com/forum/?fromgroups#!forum/prometheus-developers).
+  This will avoid unnecessary work and surely give you and us a good deal
+  of inspiration.
+
+* Relevant coding style guidelines for the Go parts are the [Go Code Review
+  Comments](https://code.google.com/p/go-wiki/wiki/CodeReviewComments)
+  and the _Formatting and style_ section of Peter Bourgon's [Go: Best
+  Practices for Production
+  Environments](http://peter.bourgon.org/go-in-production/#formatting-and-style).
diff --git a/vendor/github.com/prometheus/client_model/LICENSE b/vendor/github.com/prometheus/client_model/LICENSE
new file mode 100644
index 000000000..261eeb9e9
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/github.com/prometheus/client_model/Makefile b/vendor/github.com/prometheus/client_model/Makefile
new file mode 100644
index 000000000..9cc23b340
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/Makefile
@@ -0,0 +1,61 @@
+# Copyright 2013 Prometheus Team
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+# http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+KEY_ID ?= _DEFINE_ME_
+
+all: cpp go java python ruby
+
+SUFFIXES:
+
+cpp: cpp/metrics.pb.cc cpp/metrics.pb.h
+
+cpp/metrics.pb.cc: metrics.proto
+	protoc $< --cpp_out=cpp/
+
+cpp/metrics.pb.h: metrics.proto
+	protoc $< --cpp_out=cpp/
+
+go: go/metrics.pb.go
+
+go/metrics.pb.go: metrics.proto
+	protoc $< --go_out=go/
+
+java: src/main/java/io/prometheus/client/Metrics.java pom.xml
+	mvn clean compile package
+
+src/main/java/io/prometheus/client/Metrics.java: metrics.proto
+	protoc $< --java_out=src/main/java
+
+python: python/prometheus/client/model/metrics_pb2.py
+
+python/prometheus/client/model/metrics_pb2.py: metrics.proto
+	protoc $< --python_out=python/prometheus/client/model
+
+ruby:
+	$(MAKE) -C ruby build
+
+clean:
+	-rm -rf cpp/*
+	-rm -rf go/*
+	-rm -rf java/*
+	-rm -rf python/*
+	-$(MAKE) -C ruby clean
+	-mvn clean
+
+maven-deploy-snapshot: java
+	mvn clean deploy -Dgpg.keyname=$(KEY_ID) -DperformRelease=true
+
+maven-deploy-release: java
+	mvn clean release:clean release:prepare release:perform -Dgpg.keyname=$(KEY_ID) -DperformRelease=true
+
+.PHONY: all clean cpp go java maven-deploy-snapshot maven-deploy-release python ruby
diff --git a/vendor/github.com/prometheus/client_model/NOTICE b/vendor/github.com/prometheus/client_model/NOTICE
new file mode 100644
index 000000000..20110e410
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/NOTICE
@@ -0,0 +1,5 @@
+Data model artifacts for Prometheus.
+Copyright 2012-2015 The Prometheus Authors
+
+This product includes software developed at
+SoundCloud Ltd. (http://soundcloud.com/).
diff --git a/vendor/github.com/prometheus/client_model/README.md b/vendor/github.com/prometheus/client_model/README.md
new file mode 100644
index 000000000..a710042db
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/README.md
@@ -0,0 +1,26 @@
+# Background
+Under most circumstances, manually downloading this repository should never
+be required.
+
+# Prerequisites
+# Base
+* [Google Protocol Buffers](https://developers.google.com/protocol-buffers)
+
+## Java
+* [Apache Maven](http://maven.apache.org)
+* [Prometheus Maven Repository](https://github.com/prometheus/io.prometheus-maven-repository) checked out into ../io.prometheus-maven-repository
+
+## Go
+*  [Go](http://golang.org)
+*  [goprotobuf](https://code.google.com/p/goprotobuf)
+
+## Ruby
+*  [Ruby](https://www.ruby-lang.org)
+*  [bundler](https://rubygems.org/gems/bundler)
+
+# Building
+    $ make
+
+# Getting Started
+  * The Go source code is periodically indexed: [Go Protocol Buffer Model](http://godoc.org/github.com/prometheus/client_model/go).
+  * All of the core developers are accessible via the [Prometheus Developers Mailinglist](https://groups.google.com/forum/?fromgroups#!forum/prometheus-developers).
diff --git a/vendor/github.com/prometheus/client_model/cpp/metrics.pb.cc b/vendor/github.com/prometheus/client_model/cpp/metrics.pb.cc
new file mode 100644
index 000000000..1ff893b83
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/cpp/metrics.pb.cc
@@ -0,0 +1,3380 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: metrics.proto
+
+#define INTERNAL_SUPPRESS_PROTOBUF_FIELD_DEPRECATION
+#include "metrics.pb.h"
+
+#include <algorithm>
+
+#include <google/protobuf/stubs/common.h>
+#include <google/protobuf/stubs/once.h>
+#include <google/protobuf/io/coded_stream.h>
+#include <google/protobuf/wire_format_lite_inl.h>
+#include <google/protobuf/descriptor.h>
+#include <google/protobuf/generated_message_reflection.h>
+#include <google/protobuf/reflection_ops.h>
+#include <google/protobuf/wire_format.h>
+// @@protoc_insertion_point(includes)
+
+namespace io {
+namespace prometheus {
+namespace client {
+
+namespace {
+
+const ::google::protobuf::Descriptor* LabelPair_descriptor_ = NULL;
+const ::google::protobuf::internal::GeneratedMessageReflection*
+  LabelPair_reflection_ = NULL;
+const ::google::protobuf::Descriptor* Gauge_descriptor_ = NULL;
+const ::google::protobuf::internal::GeneratedMessageReflection*
+  Gauge_reflection_ = NULL;
+const ::google::protobuf::Descriptor* Counter_descriptor_ = NULL;
+const ::google::protobuf::internal::GeneratedMessageReflection*
+  Counter_reflection_ = NULL;
+const ::google::protobuf::Descriptor* Quantile_descriptor_ = NULL;
+const ::google::protobuf::internal::GeneratedMessageReflection*
+  Quantile_reflection_ = NULL;
+const ::google::protobuf::Descriptor* Summary_descriptor_ = NULL;
+const ::google::protobuf::internal::GeneratedMessageReflection*
+  Summary_reflection_ = NULL;
+const ::google::protobuf::Descriptor* Untyped_descriptor_ = NULL;
+const ::google::protobuf::internal::GeneratedMessageReflection*
+  Untyped_reflection_ = NULL;
+const ::google::protobuf::Descriptor* Histogram_descriptor_ = NULL;
+const ::google::protobuf::internal::GeneratedMessageReflection*
+  Histogram_reflection_ = NULL;
+const ::google::protobuf::Descriptor* Bucket_descriptor_ = NULL;
+const ::google::protobuf::internal::GeneratedMessageReflection*
+  Bucket_reflection_ = NULL;
+const ::google::protobuf::Descriptor* Metric_descriptor_ = NULL;
+const ::google::protobuf::internal::GeneratedMessageReflection*
+  Metric_reflection_ = NULL;
+const ::google::protobuf::Descriptor* MetricFamily_descriptor_ = NULL;
+const ::google::protobuf::internal::GeneratedMessageReflection*
+  MetricFamily_reflection_ = NULL;
+const ::google::protobuf::EnumDescriptor* MetricType_descriptor_ = NULL;
+
+}  // namespace
+
+
+void protobuf_AssignDesc_metrics_2eproto() {
+  protobuf_AddDesc_metrics_2eproto();
+  const ::google::protobuf::FileDescriptor* file =
+    ::google::protobuf::DescriptorPool::generated_pool()->FindFileByName(
+      "metrics.proto");
+  GOOGLE_CHECK(file != NULL);
+  LabelPair_descriptor_ = file->message_type(0);
+  static const int LabelPair_offsets_[2] = {
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(LabelPair, name_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(LabelPair, value_),
+  };
+  LabelPair_reflection_ =
+    new ::google::protobuf::internal::GeneratedMessageReflection(
+      LabelPair_descriptor_,
+      LabelPair::default_instance_,
+      LabelPair_offsets_,
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(LabelPair, _has_bits_[0]),
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(LabelPair, _unknown_fields_),
+      -1,
+      ::google::protobuf::DescriptorPool::generated_pool(),
+      ::google::protobuf::MessageFactory::generated_factory(),
+      sizeof(LabelPair));
+  Gauge_descriptor_ = file->message_type(1);
+  static const int Gauge_offsets_[1] = {
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Gauge, value_),
+  };
+  Gauge_reflection_ =
+    new ::google::protobuf::internal::GeneratedMessageReflection(
+      Gauge_descriptor_,
+      Gauge::default_instance_,
+      Gauge_offsets_,
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Gauge, _has_bits_[0]),
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Gauge, _unknown_fields_),
+      -1,
+      ::google::protobuf::DescriptorPool::generated_pool(),
+      ::google::protobuf::MessageFactory::generated_factory(),
+      sizeof(Gauge));
+  Counter_descriptor_ = file->message_type(2);
+  static const int Counter_offsets_[1] = {
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Counter, value_),
+  };
+  Counter_reflection_ =
+    new ::google::protobuf::internal::GeneratedMessageReflection(
+      Counter_descriptor_,
+      Counter::default_instance_,
+      Counter_offsets_,
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Counter, _has_bits_[0]),
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Counter, _unknown_fields_),
+      -1,
+      ::google::protobuf::DescriptorPool::generated_pool(),
+      ::google::protobuf::MessageFactory::generated_factory(),
+      sizeof(Counter));
+  Quantile_descriptor_ = file->message_type(3);
+  static const int Quantile_offsets_[2] = {
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Quantile, quantile_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Quantile, value_),
+  };
+  Quantile_reflection_ =
+    new ::google::protobuf::internal::GeneratedMessageReflection(
+      Quantile_descriptor_,
+      Quantile::default_instance_,
+      Quantile_offsets_,
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Quantile, _has_bits_[0]),
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Quantile, _unknown_fields_),
+      -1,
+      ::google::protobuf::DescriptorPool::generated_pool(),
+      ::google::protobuf::MessageFactory::generated_factory(),
+      sizeof(Quantile));
+  Summary_descriptor_ = file->message_type(4);
+  static const int Summary_offsets_[3] = {
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Summary, sample_count_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Summary, sample_sum_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Summary, quantile_),
+  };
+  Summary_reflection_ =
+    new ::google::protobuf::internal::GeneratedMessageReflection(
+      Summary_descriptor_,
+      Summary::default_instance_,
+      Summary_offsets_,
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Summary, _has_bits_[0]),
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Summary, _unknown_fields_),
+      -1,
+      ::google::protobuf::DescriptorPool::generated_pool(),
+      ::google::protobuf::MessageFactory::generated_factory(),
+      sizeof(Summary));
+  Untyped_descriptor_ = file->message_type(5);
+  static const int Untyped_offsets_[1] = {
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Untyped, value_),
+  };
+  Untyped_reflection_ =
+    new ::google::protobuf::internal::GeneratedMessageReflection(
+      Untyped_descriptor_,
+      Untyped::default_instance_,
+      Untyped_offsets_,
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Untyped, _has_bits_[0]),
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Untyped, _unknown_fields_),
+      -1,
+      ::google::protobuf::DescriptorPool::generated_pool(),
+      ::google::protobuf::MessageFactory::generated_factory(),
+      sizeof(Untyped));
+  Histogram_descriptor_ = file->message_type(6);
+  static const int Histogram_offsets_[3] = {
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Histogram, sample_count_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Histogram, sample_sum_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Histogram, bucket_),
+  };
+  Histogram_reflection_ =
+    new ::google::protobuf::internal::GeneratedMessageReflection(
+      Histogram_descriptor_,
+      Histogram::default_instance_,
+      Histogram_offsets_,
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Histogram, _has_bits_[0]),
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Histogram, _unknown_fields_),
+      -1,
+      ::google::protobuf::DescriptorPool::generated_pool(),
+      ::google::protobuf::MessageFactory::generated_factory(),
+      sizeof(Histogram));
+  Bucket_descriptor_ = file->message_type(7);
+  static const int Bucket_offsets_[2] = {
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Bucket, cumulative_count_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Bucket, upper_bound_),
+  };
+  Bucket_reflection_ =
+    new ::google::protobuf::internal::GeneratedMessageReflection(
+      Bucket_descriptor_,
+      Bucket::default_instance_,
+      Bucket_offsets_,
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Bucket, _has_bits_[0]),
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Bucket, _unknown_fields_),
+      -1,
+      ::google::protobuf::DescriptorPool::generated_pool(),
+      ::google::protobuf::MessageFactory::generated_factory(),
+      sizeof(Bucket));
+  Metric_descriptor_ = file->message_type(8);
+  static const int Metric_offsets_[7] = {
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Metric, label_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Metric, gauge_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Metric, counter_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Metric, summary_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Metric, untyped_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Metric, histogram_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Metric, timestamp_ms_),
+  };
+  Metric_reflection_ =
+    new ::google::protobuf::internal::GeneratedMessageReflection(
+      Metric_descriptor_,
+      Metric::default_instance_,
+      Metric_offsets_,
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Metric, _has_bits_[0]),
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Metric, _unknown_fields_),
+      -1,
+      ::google::protobuf::DescriptorPool::generated_pool(),
+      ::google::protobuf::MessageFactory::generated_factory(),
+      sizeof(Metric));
+  MetricFamily_descriptor_ = file->message_type(9);
+  static const int MetricFamily_offsets_[4] = {
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MetricFamily, name_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MetricFamily, help_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MetricFamily, type_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MetricFamily, metric_),
+  };
+  MetricFamily_reflection_ =
+    new ::google::protobuf::internal::GeneratedMessageReflection(
+      MetricFamily_descriptor_,
+      MetricFamily::default_instance_,
+      MetricFamily_offsets_,
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MetricFamily, _has_bits_[0]),
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MetricFamily, _unknown_fields_),
+      -1,
+      ::google::protobuf::DescriptorPool::generated_pool(),
+      ::google::protobuf::MessageFactory::generated_factory(),
+      sizeof(MetricFamily));
+  MetricType_descriptor_ = file->enum_type(0);
+}
+
+namespace {
+
+GOOGLE_PROTOBUF_DECLARE_ONCE(protobuf_AssignDescriptors_once_);
+inline void protobuf_AssignDescriptorsOnce() {
+  ::google::protobuf::GoogleOnceInit(&protobuf_AssignDescriptors_once_,
+                 &protobuf_AssignDesc_metrics_2eproto);
+}
+
+void protobuf_RegisterTypes(const ::std::string&) {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedMessage(
+    LabelPair_descriptor_, &LabelPair::default_instance());
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedMessage(
+    Gauge_descriptor_, &Gauge::default_instance());
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedMessage(
+    Counter_descriptor_, &Counter::default_instance());
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedMessage(
+    Quantile_descriptor_, &Quantile::default_instance());
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedMessage(
+    Summary_descriptor_, &Summary::default_instance());
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedMessage(
+    Untyped_descriptor_, &Untyped::default_instance());
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedMessage(
+    Histogram_descriptor_, &Histogram::default_instance());
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedMessage(
+    Bucket_descriptor_, &Bucket::default_instance());
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedMessage(
+    Metric_descriptor_, &Metric::default_instance());
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedMessage(
+    MetricFamily_descriptor_, &MetricFamily::default_instance());
+}
+
+}  // namespace
+
+void protobuf_ShutdownFile_metrics_2eproto() {
+  delete LabelPair::default_instance_;
+  delete LabelPair_reflection_;
+  delete Gauge::default_instance_;
+  delete Gauge_reflection_;
+  delete Counter::default_instance_;
+  delete Counter_reflection_;
+  delete Quantile::default_instance_;
+  delete Quantile_reflection_;
+  delete Summary::default_instance_;
+  delete Summary_reflection_;
+  delete Untyped::default_instance_;
+  delete Untyped_reflection_;
+  delete Histogram::default_instance_;
+  delete Histogram_reflection_;
+  delete Bucket::default_instance_;
+  delete Bucket_reflection_;
+  delete Metric::default_instance_;
+  delete Metric_reflection_;
+  delete MetricFamily::default_instance_;
+  delete MetricFamily_reflection_;
+}
+
+void protobuf_AddDesc_metrics_2eproto() {
+  static bool already_here = false;
+  if (already_here) return;
+  already_here = true;
+  GOOGLE_PROTOBUF_VERIFY_VERSION;
+
+  ::google::protobuf::DescriptorPool::InternalAddGeneratedFile(
+    "\n\rmetrics.proto\022\024io.prometheus.client\"(\n"
+    "\tLabelPair\022\014\n\004name\030\001 \001(\t\022\r\n\005value\030\002 \001(\t\""
+    "\026\n\005Gauge\022\r\n\005value\030\001 \001(\001\"\030\n\007Counter\022\r\n\005va"
+    "lue\030\001 \001(\001\"+\n\010Quantile\022\020\n\010quantile\030\001 \001(\001\022"
+    "\r\n\005value\030\002 \001(\001\"e\n\007Summary\022\024\n\014sample_coun"
+    "t\030\001 \001(\004\022\022\n\nsample_sum\030\002 \001(\001\0220\n\010quantile\030"
+    "\003 \003(\0132\036.io.prometheus.client.Quantile\"\030\n"
+    "\007Untyped\022\r\n\005value\030\001 \001(\001\"c\n\tHistogram\022\024\n\014"
+    "sample_count\030\001 \001(\004\022\022\n\nsample_sum\030\002 \001(\001\022,"
+    "\n\006bucket\030\003 \003(\0132\034.io.prometheus.client.Bu"
+    "cket\"7\n\006Bucket\022\030\n\020cumulative_count\030\001 \001(\004"
+    "\022\023\n\013upper_bound\030\002 \001(\001\"\276\002\n\006Metric\022.\n\005labe"
+    "l\030\001 \003(\0132\037.io.prometheus.client.LabelPair"
+    "\022*\n\005gauge\030\002 \001(\0132\033.io.prometheus.client.G"
+    "auge\022.\n\007counter\030\003 \001(\0132\035.io.prometheus.cl"
+    "ient.Counter\022.\n\007summary\030\004 \001(\0132\035.io.prome"
+    "theus.client.Summary\022.\n\007untyped\030\005 \001(\0132\035."
+    "io.prometheus.client.Untyped\0222\n\thistogra"
+    "m\030\007 \001(\0132\037.io.prometheus.client.Histogram"
+    "\022\024\n\014timestamp_ms\030\006 \001(\003\"\210\001\n\014MetricFamily\022"
+    "\014\n\004name\030\001 \001(\t\022\014\n\004help\030\002 \001(\t\022.\n\004type\030\003 \001("
+    "\0162 .io.prometheus.client.MetricType\022,\n\006m"
+    "etric\030\004 \003(\0132\034.io.prometheus.client.Metri"
+    "c*M\n\nMetricType\022\013\n\007COUNTER\020\000\022\t\n\005GAUGE\020\001\022"
+    "\013\n\007SUMMARY\020\002\022\013\n\007UNTYPED\020\003\022\r\n\tHISTOGRAM\020\004"
+    "B\026\n\024io.prometheus.client", 1024);
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedFile(
+    "metrics.proto", &protobuf_RegisterTypes);
+  LabelPair::default_instance_ = new LabelPair();
+  Gauge::default_instance_ = new Gauge();
+  Counter::default_instance_ = new Counter();
+  Quantile::default_instance_ = new Quantile();
+  Summary::default_instance_ = new Summary();
+  Untyped::default_instance_ = new Untyped();
+  Histogram::default_instance_ = new Histogram();
+  Bucket::default_instance_ = new Bucket();
+  Metric::default_instance_ = new Metric();
+  MetricFamily::default_instance_ = new MetricFamily();
+  LabelPair::default_instance_->InitAsDefaultInstance();
+  Gauge::default_instance_->InitAsDefaultInstance();
+  Counter::default_instance_->InitAsDefaultInstance();
+  Quantile::default_instance_->InitAsDefaultInstance();
+  Summary::default_instance_->InitAsDefaultInstance();
+  Untyped::default_instance_->InitAsDefaultInstance();
+  Histogram::default_instance_->InitAsDefaultInstance();
+  Bucket::default_instance_->InitAsDefaultInstance();
+  Metric::default_instance_->InitAsDefaultInstance();
+  MetricFamily::default_instance_->InitAsDefaultInstance();
+  ::google::protobuf::internal::OnShutdown(&protobuf_ShutdownFile_metrics_2eproto);
+}
+
+// Force AddDescriptors() to be called at static initialization time.
+struct StaticDescriptorInitializer_metrics_2eproto {
+  StaticDescriptorInitializer_metrics_2eproto() {
+    protobuf_AddDesc_metrics_2eproto();
+  }
+} static_descriptor_initializer_metrics_2eproto_;
+const ::google::protobuf::EnumDescriptor* MetricType_descriptor() {
+  protobuf_AssignDescriptorsOnce();
+  return MetricType_descriptor_;
+}
+bool MetricType_IsValid(int value) {
+  switch(value) {
+    case 0:
+    case 1:
+    case 2:
+    case 3:
+    case 4:
+      return true;
+    default:
+      return false;
+  }
+}
+
+
+// ===================================================================
+
+#ifndef _MSC_VER
+const int LabelPair::kNameFieldNumber;
+const int LabelPair::kValueFieldNumber;
+#endif  // !_MSC_VER
+
+LabelPair::LabelPair()
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:io.prometheus.client.LabelPair)
+}
+
+void LabelPair::InitAsDefaultInstance() {
+}
+
+LabelPair::LabelPair(const LabelPair& from)
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  MergeFrom(from);
+  // @@protoc_insertion_point(copy_constructor:io.prometheus.client.LabelPair)
+}
+
+void LabelPair::SharedCtor() {
+  ::google::protobuf::internal::GetEmptyString();
+  _cached_size_ = 0;
+  name_ = const_cast< ::std::string*>(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+  value_ = const_cast< ::std::string*>(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+}
+
+LabelPair::~LabelPair() {
+  // @@protoc_insertion_point(destructor:io.prometheus.client.LabelPair)
+  SharedDtor();
+}
+
+void LabelPair::SharedDtor() {
+  if (name_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    delete name_;
+  }
+  if (value_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    delete value_;
+  }
+  if (this != default_instance_) {
+  }
+}
+
+void LabelPair::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* LabelPair::descriptor() {
+  protobuf_AssignDescriptorsOnce();
+  return LabelPair_descriptor_;
+}
+
+const LabelPair& LabelPair::default_instance() {
+  if (default_instance_ == NULL) protobuf_AddDesc_metrics_2eproto();
+  return *default_instance_;
+}
+
+LabelPair* LabelPair::default_instance_ = NULL;
+
+LabelPair* LabelPair::New() const {
+  return new LabelPair;
+}
+
+void LabelPair::Clear() {
+  if (_has_bits_[0 / 32] & 3) {
+    if (has_name()) {
+      if (name_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+        name_->clear();
+      }
+    }
+    if (has_value()) {
+      if (value_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+        value_->clear();
+      }
+    }
+  }
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+  mutable_unknown_fields()->Clear();
+}
+
+bool LabelPair::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:io.prometheus.client.LabelPair)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoff(127);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // optional string name = 1;
+      case 1: {
+        if (tag == 10) {
+          DO_(::google::protobuf::internal::WireFormatLite::ReadString(
+                input, this->mutable_name()));
+          ::google::protobuf::internal::WireFormat::VerifyUTF8StringNamedField(
+            this->name().data(), this->name().length(),
+            ::google::protobuf::internal::WireFormat::PARSE,
+            "name");
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(18)) goto parse_value;
+        break;
+      }
+
+      // optional string value = 2;
+      case 2: {
+        if (tag == 18) {
+         parse_value:
+          DO_(::google::protobuf::internal::WireFormatLite::ReadString(
+                input, this->mutable_value()));
+          ::google::protobuf::internal::WireFormat::VerifyUTF8StringNamedField(
+            this->value().data(), this->value().length(),
+            ::google::protobuf::internal::WireFormat::PARSE,
+            "value");
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectAtEnd()) goto success;
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0 ||
+            ::google::protobuf::internal::WireFormatLite::GetTagWireType(tag) ==
+            ::google::protobuf::internal::WireFormatLite::WIRETYPE_END_GROUP) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:io.prometheus.client.LabelPair)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:io.prometheus.client.LabelPair)
+  return false;
+#undef DO_
+}
+
+void LabelPair::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:io.prometheus.client.LabelPair)
+  // optional string name = 1;
+  if (has_name()) {
+    ::google::protobuf::internal::WireFormat::VerifyUTF8StringNamedField(
+      this->name().data(), this->name().length(),
+      ::google::protobuf::internal::WireFormat::SERIALIZE,
+      "name");
+    ::google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(
+      1, this->name(), output);
+  }
+
+  // optional string value = 2;
+  if (has_value()) {
+    ::google::protobuf::internal::WireFormat::VerifyUTF8StringNamedField(
+      this->value().data(), this->value().length(),
+      ::google::protobuf::internal::WireFormat::SERIALIZE,
+      "value");
+    ::google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(
+      2, this->value(), output);
+  }
+
+  if (!unknown_fields().empty()) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        unknown_fields(), output);
+  }
+  // @@protoc_insertion_point(serialize_end:io.prometheus.client.LabelPair)
+}
+
+::google::protobuf::uint8* LabelPair::SerializeWithCachedSizesToArray(
+    ::google::protobuf::uint8* target) const {
+  // @@protoc_insertion_point(serialize_to_array_start:io.prometheus.client.LabelPair)
+  // optional string name = 1;
+  if (has_name()) {
+    ::google::protobuf::internal::WireFormat::VerifyUTF8StringNamedField(
+      this->name().data(), this->name().length(),
+      ::google::protobuf::internal::WireFormat::SERIALIZE,
+      "name");
+    target =
+      ::google::protobuf::internal::WireFormatLite::WriteStringToArray(
+        1, this->name(), target);
+  }
+
+  // optional string value = 2;
+  if (has_value()) {
+    ::google::protobuf::internal::WireFormat::VerifyUTF8StringNamedField(
+      this->value().data(), this->value().length(),
+      ::google::protobuf::internal::WireFormat::SERIALIZE,
+      "value");
+    target =
+      ::google::protobuf::internal::WireFormatLite::WriteStringToArray(
+        2, this->value(), target);
+  }
+
+  if (!unknown_fields().empty()) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        unknown_fields(), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:io.prometheus.client.LabelPair)
+  return target;
+}
+
+int LabelPair::ByteSize() const {
+  int total_size = 0;
+
+  if (_has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    // optional string name = 1;
+    if (has_name()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::StringSize(
+          this->name());
+    }
+
+    // optional string value = 2;
+    if (has_value()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::StringSize(
+          this->value());
+    }
+
+  }
+  if (!unknown_fields().empty()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        unknown_fields());
+  }
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = total_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void LabelPair::MergeFrom(const ::google::protobuf::Message& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  const LabelPair* source =
+    ::google::protobuf::internal::dynamic_cast_if_available<const LabelPair*>(
+      &from);
+  if (source == NULL) {
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+    MergeFrom(*source);
+  }
+}
+
+void LabelPair::MergeFrom(const LabelPair& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  if (from._has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    if (from.has_name()) {
+      set_name(from.name());
+    }
+    if (from.has_value()) {
+      set_value(from.value());
+    }
+  }
+  mutable_unknown_fields()->MergeFrom(from.unknown_fields());
+}
+
+void LabelPair::CopyFrom(const ::google::protobuf::Message& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void LabelPair::CopyFrom(const LabelPair& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool LabelPair::IsInitialized() const {
+
+  return true;
+}
+
+void LabelPair::Swap(LabelPair* other) {
+  if (other != this) {
+    std::swap(name_, other->name_);
+    std::swap(value_, other->value_);
+    std::swap(_has_bits_[0], other->_has_bits_[0]);
+    _unknown_fields_.Swap(&other->_unknown_fields_);
+    std::swap(_cached_size_, other->_cached_size_);
+  }
+}
+
+::google::protobuf::Metadata LabelPair::GetMetadata() const {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::Metadata metadata;
+  metadata.descriptor = LabelPair_descriptor_;
+  metadata.reflection = LabelPair_reflection_;
+  return metadata;
+}
+
+
+// ===================================================================
+
+#ifndef _MSC_VER
+const int Gauge::kValueFieldNumber;
+#endif  // !_MSC_VER
+
+Gauge::Gauge()
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:io.prometheus.client.Gauge)
+}
+
+void Gauge::InitAsDefaultInstance() {
+}
+
+Gauge::Gauge(const Gauge& from)
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  MergeFrom(from);
+  // @@protoc_insertion_point(copy_constructor:io.prometheus.client.Gauge)
+}
+
+void Gauge::SharedCtor() {
+  _cached_size_ = 0;
+  value_ = 0;
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+}
+
+Gauge::~Gauge() {
+  // @@protoc_insertion_point(destructor:io.prometheus.client.Gauge)
+  SharedDtor();
+}
+
+void Gauge::SharedDtor() {
+  if (this != default_instance_) {
+  }
+}
+
+void Gauge::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* Gauge::descriptor() {
+  protobuf_AssignDescriptorsOnce();
+  return Gauge_descriptor_;
+}
+
+const Gauge& Gauge::default_instance() {
+  if (default_instance_ == NULL) protobuf_AddDesc_metrics_2eproto();
+  return *default_instance_;
+}
+
+Gauge* Gauge::default_instance_ = NULL;
+
+Gauge* Gauge::New() const {
+  return new Gauge;
+}
+
+void Gauge::Clear() {
+  value_ = 0;
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+  mutable_unknown_fields()->Clear();
+}
+
+bool Gauge::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:io.prometheus.client.Gauge)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoff(127);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // optional double value = 1;
+      case 1: {
+        if (tag == 9) {
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   double, ::google::protobuf::internal::WireFormatLite::TYPE_DOUBLE>(
+                 input, &value_)));
+          set_has_value();
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectAtEnd()) goto success;
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0 ||
+            ::google::protobuf::internal::WireFormatLite::GetTagWireType(tag) ==
+            ::google::protobuf::internal::WireFormatLite::WIRETYPE_END_GROUP) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:io.prometheus.client.Gauge)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:io.prometheus.client.Gauge)
+  return false;
+#undef DO_
+}
+
+void Gauge::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:io.prometheus.client.Gauge)
+  // optional double value = 1;
+  if (has_value()) {
+    ::google::protobuf::internal::WireFormatLite::WriteDouble(1, this->value(), output);
+  }
+
+  if (!unknown_fields().empty()) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        unknown_fields(), output);
+  }
+  // @@protoc_insertion_point(serialize_end:io.prometheus.client.Gauge)
+}
+
+::google::protobuf::uint8* Gauge::SerializeWithCachedSizesToArray(
+    ::google::protobuf::uint8* target) const {
+  // @@protoc_insertion_point(serialize_to_array_start:io.prometheus.client.Gauge)
+  // optional double value = 1;
+  if (has_value()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteDoubleToArray(1, this->value(), target);
+  }
+
+  if (!unknown_fields().empty()) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        unknown_fields(), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:io.prometheus.client.Gauge)
+  return target;
+}
+
+int Gauge::ByteSize() const {
+  int total_size = 0;
+
+  if (_has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    // optional double value = 1;
+    if (has_value()) {
+      total_size += 1 + 8;
+    }
+
+  }
+  if (!unknown_fields().empty()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        unknown_fields());
+  }
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = total_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void Gauge::MergeFrom(const ::google::protobuf::Message& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  const Gauge* source =
+    ::google::protobuf::internal::dynamic_cast_if_available<const Gauge*>(
+      &from);
+  if (source == NULL) {
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+    MergeFrom(*source);
+  }
+}
+
+void Gauge::MergeFrom(const Gauge& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  if (from._has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    if (from.has_value()) {
+      set_value(from.value());
+    }
+  }
+  mutable_unknown_fields()->MergeFrom(from.unknown_fields());
+}
+
+void Gauge::CopyFrom(const ::google::protobuf::Message& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void Gauge::CopyFrom(const Gauge& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool Gauge::IsInitialized() const {
+
+  return true;
+}
+
+void Gauge::Swap(Gauge* other) {
+  if (other != this) {
+    std::swap(value_, other->value_);
+    std::swap(_has_bits_[0], other->_has_bits_[0]);
+    _unknown_fields_.Swap(&other->_unknown_fields_);
+    std::swap(_cached_size_, other->_cached_size_);
+  }
+}
+
+::google::protobuf::Metadata Gauge::GetMetadata() const {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::Metadata metadata;
+  metadata.descriptor = Gauge_descriptor_;
+  metadata.reflection = Gauge_reflection_;
+  return metadata;
+}
+
+
+// ===================================================================
+
+#ifndef _MSC_VER
+const int Counter::kValueFieldNumber;
+#endif  // !_MSC_VER
+
+Counter::Counter()
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:io.prometheus.client.Counter)
+}
+
+void Counter::InitAsDefaultInstance() {
+}
+
+Counter::Counter(const Counter& from)
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  MergeFrom(from);
+  // @@protoc_insertion_point(copy_constructor:io.prometheus.client.Counter)
+}
+
+void Counter::SharedCtor() {
+  _cached_size_ = 0;
+  value_ = 0;
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+}
+
+Counter::~Counter() {
+  // @@protoc_insertion_point(destructor:io.prometheus.client.Counter)
+  SharedDtor();
+}
+
+void Counter::SharedDtor() {
+  if (this != default_instance_) {
+  }
+}
+
+void Counter::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* Counter::descriptor() {
+  protobuf_AssignDescriptorsOnce();
+  return Counter_descriptor_;
+}
+
+const Counter& Counter::default_instance() {
+  if (default_instance_ == NULL) protobuf_AddDesc_metrics_2eproto();
+  return *default_instance_;
+}
+
+Counter* Counter::default_instance_ = NULL;
+
+Counter* Counter::New() const {
+  return new Counter;
+}
+
+void Counter::Clear() {
+  value_ = 0;
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+  mutable_unknown_fields()->Clear();
+}
+
+bool Counter::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:io.prometheus.client.Counter)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoff(127);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // optional double value = 1;
+      case 1: {
+        if (tag == 9) {
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   double, ::google::protobuf::internal::WireFormatLite::TYPE_DOUBLE>(
+                 input, &value_)));
+          set_has_value();
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectAtEnd()) goto success;
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0 ||
+            ::google::protobuf::internal::WireFormatLite::GetTagWireType(tag) ==
+            ::google::protobuf::internal::WireFormatLite::WIRETYPE_END_GROUP) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:io.prometheus.client.Counter)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:io.prometheus.client.Counter)
+  return false;
+#undef DO_
+}
+
+void Counter::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:io.prometheus.client.Counter)
+  // optional double value = 1;
+  if (has_value()) {
+    ::google::protobuf::internal::WireFormatLite::WriteDouble(1, this->value(), output);
+  }
+
+  if (!unknown_fields().empty()) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        unknown_fields(), output);
+  }
+  // @@protoc_insertion_point(serialize_end:io.prometheus.client.Counter)
+}
+
+::google::protobuf::uint8* Counter::SerializeWithCachedSizesToArray(
+    ::google::protobuf::uint8* target) const {
+  // @@protoc_insertion_point(serialize_to_array_start:io.prometheus.client.Counter)
+  // optional double value = 1;
+  if (has_value()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteDoubleToArray(1, this->value(), target);
+  }
+
+  if (!unknown_fields().empty()) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        unknown_fields(), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:io.prometheus.client.Counter)
+  return target;
+}
+
+int Counter::ByteSize() const {
+  int total_size = 0;
+
+  if (_has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    // optional double value = 1;
+    if (has_value()) {
+      total_size += 1 + 8;
+    }
+
+  }
+  if (!unknown_fields().empty()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        unknown_fields());
+  }
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = total_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void Counter::MergeFrom(const ::google::protobuf::Message& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  const Counter* source =
+    ::google::protobuf::internal::dynamic_cast_if_available<const Counter*>(
+      &from);
+  if (source == NULL) {
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+    MergeFrom(*source);
+  }
+}
+
+void Counter::MergeFrom(const Counter& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  if (from._has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    if (from.has_value()) {
+      set_value(from.value());
+    }
+  }
+  mutable_unknown_fields()->MergeFrom(from.unknown_fields());
+}
+
+void Counter::CopyFrom(const ::google::protobuf::Message& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void Counter::CopyFrom(const Counter& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool Counter::IsInitialized() const {
+
+  return true;
+}
+
+void Counter::Swap(Counter* other) {
+  if (other != this) {
+    std::swap(value_, other->value_);
+    std::swap(_has_bits_[0], other->_has_bits_[0]);
+    _unknown_fields_.Swap(&other->_unknown_fields_);
+    std::swap(_cached_size_, other->_cached_size_);
+  }
+}
+
+::google::protobuf::Metadata Counter::GetMetadata() const {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::Metadata metadata;
+  metadata.descriptor = Counter_descriptor_;
+  metadata.reflection = Counter_reflection_;
+  return metadata;
+}
+
+
+// ===================================================================
+
+#ifndef _MSC_VER
+const int Quantile::kQuantileFieldNumber;
+const int Quantile::kValueFieldNumber;
+#endif  // !_MSC_VER
+
+Quantile::Quantile()
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:io.prometheus.client.Quantile)
+}
+
+void Quantile::InitAsDefaultInstance() {
+}
+
+Quantile::Quantile(const Quantile& from)
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  MergeFrom(from);
+  // @@protoc_insertion_point(copy_constructor:io.prometheus.client.Quantile)
+}
+
+void Quantile::SharedCtor() {
+  _cached_size_ = 0;
+  quantile_ = 0;
+  value_ = 0;
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+}
+
+Quantile::~Quantile() {
+  // @@protoc_insertion_point(destructor:io.prometheus.client.Quantile)
+  SharedDtor();
+}
+
+void Quantile::SharedDtor() {
+  if (this != default_instance_) {
+  }
+}
+
+void Quantile::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* Quantile::descriptor() {
+  protobuf_AssignDescriptorsOnce();
+  return Quantile_descriptor_;
+}
+
+const Quantile& Quantile::default_instance() {
+  if (default_instance_ == NULL) protobuf_AddDesc_metrics_2eproto();
+  return *default_instance_;
+}
+
+Quantile* Quantile::default_instance_ = NULL;
+
+Quantile* Quantile::New() const {
+  return new Quantile;
+}
+
+void Quantile::Clear() {
+#define OFFSET_OF_FIELD_(f) (reinterpret_cast<char*>(      \
+  &reinterpret_cast<Quantile*>(16)->f) - \
+   reinterpret_cast<char*>(16))
+
+#define ZR_(first, last) do {                              \
+    size_t f = OFFSET_OF_FIELD_(first);                    \
+    size_t n = OFFSET_OF_FIELD_(last) - f + sizeof(last);  \
+    ::memset(&first, 0, n);                                \
+  } while (0)
+
+  ZR_(quantile_, value_);
+
+#undef OFFSET_OF_FIELD_
+#undef ZR_
+
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+  mutable_unknown_fields()->Clear();
+}
+
+bool Quantile::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:io.prometheus.client.Quantile)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoff(127);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // optional double quantile = 1;
+      case 1: {
+        if (tag == 9) {
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   double, ::google::protobuf::internal::WireFormatLite::TYPE_DOUBLE>(
+                 input, &quantile_)));
+          set_has_quantile();
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(17)) goto parse_value;
+        break;
+      }
+
+      // optional double value = 2;
+      case 2: {
+        if (tag == 17) {
+         parse_value:
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   double, ::google::protobuf::internal::WireFormatLite::TYPE_DOUBLE>(
+                 input, &value_)));
+          set_has_value();
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectAtEnd()) goto success;
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0 ||
+            ::google::protobuf::internal::WireFormatLite::GetTagWireType(tag) ==
+            ::google::protobuf::internal::WireFormatLite::WIRETYPE_END_GROUP) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:io.prometheus.client.Quantile)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:io.prometheus.client.Quantile)
+  return false;
+#undef DO_
+}
+
+void Quantile::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:io.prometheus.client.Quantile)
+  // optional double quantile = 1;
+  if (has_quantile()) {
+    ::google::protobuf::internal::WireFormatLite::WriteDouble(1, this->quantile(), output);
+  }
+
+  // optional double value = 2;
+  if (has_value()) {
+    ::google::protobuf::internal::WireFormatLite::WriteDouble(2, this->value(), output);
+  }
+
+  if (!unknown_fields().empty()) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        unknown_fields(), output);
+  }
+  // @@protoc_insertion_point(serialize_end:io.prometheus.client.Quantile)
+}
+
+::google::protobuf::uint8* Quantile::SerializeWithCachedSizesToArray(
+    ::google::protobuf::uint8* target) const {
+  // @@protoc_insertion_point(serialize_to_array_start:io.prometheus.client.Quantile)
+  // optional double quantile = 1;
+  if (has_quantile()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteDoubleToArray(1, this->quantile(), target);
+  }
+
+  // optional double value = 2;
+  if (has_value()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteDoubleToArray(2, this->value(), target);
+  }
+
+  if (!unknown_fields().empty()) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        unknown_fields(), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:io.prometheus.client.Quantile)
+  return target;
+}
+
+int Quantile::ByteSize() const {
+  int total_size = 0;
+
+  if (_has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    // optional double quantile = 1;
+    if (has_quantile()) {
+      total_size += 1 + 8;
+    }
+
+    // optional double value = 2;
+    if (has_value()) {
+      total_size += 1 + 8;
+    }
+
+  }
+  if (!unknown_fields().empty()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        unknown_fields());
+  }
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = total_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void Quantile::MergeFrom(const ::google::protobuf::Message& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  const Quantile* source =
+    ::google::protobuf::internal::dynamic_cast_if_available<const Quantile*>(
+      &from);
+  if (source == NULL) {
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+    MergeFrom(*source);
+  }
+}
+
+void Quantile::MergeFrom(const Quantile& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  if (from._has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    if (from.has_quantile()) {
+      set_quantile(from.quantile());
+    }
+    if (from.has_value()) {
+      set_value(from.value());
+    }
+  }
+  mutable_unknown_fields()->MergeFrom(from.unknown_fields());
+}
+
+void Quantile::CopyFrom(const ::google::protobuf::Message& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void Quantile::CopyFrom(const Quantile& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool Quantile::IsInitialized() const {
+
+  return true;
+}
+
+void Quantile::Swap(Quantile* other) {
+  if (other != this) {
+    std::swap(quantile_, other->quantile_);
+    std::swap(value_, other->value_);
+    std::swap(_has_bits_[0], other->_has_bits_[0]);
+    _unknown_fields_.Swap(&other->_unknown_fields_);
+    std::swap(_cached_size_, other->_cached_size_);
+  }
+}
+
+::google::protobuf::Metadata Quantile::GetMetadata() const {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::Metadata metadata;
+  metadata.descriptor = Quantile_descriptor_;
+  metadata.reflection = Quantile_reflection_;
+  return metadata;
+}
+
+
+// ===================================================================
+
+#ifndef _MSC_VER
+const int Summary::kSampleCountFieldNumber;
+const int Summary::kSampleSumFieldNumber;
+const int Summary::kQuantileFieldNumber;
+#endif  // !_MSC_VER
+
+Summary::Summary()
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:io.prometheus.client.Summary)
+}
+
+void Summary::InitAsDefaultInstance() {
+}
+
+Summary::Summary(const Summary& from)
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  MergeFrom(from);
+  // @@protoc_insertion_point(copy_constructor:io.prometheus.client.Summary)
+}
+
+void Summary::SharedCtor() {
+  _cached_size_ = 0;
+  sample_count_ = GOOGLE_ULONGLONG(0);
+  sample_sum_ = 0;
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+}
+
+Summary::~Summary() {
+  // @@protoc_insertion_point(destructor:io.prometheus.client.Summary)
+  SharedDtor();
+}
+
+void Summary::SharedDtor() {
+  if (this != default_instance_) {
+  }
+}
+
+void Summary::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* Summary::descriptor() {
+  protobuf_AssignDescriptorsOnce();
+  return Summary_descriptor_;
+}
+
+const Summary& Summary::default_instance() {
+  if (default_instance_ == NULL) protobuf_AddDesc_metrics_2eproto();
+  return *default_instance_;
+}
+
+Summary* Summary::default_instance_ = NULL;
+
+Summary* Summary::New() const {
+  return new Summary;
+}
+
+void Summary::Clear() {
+#define OFFSET_OF_FIELD_(f) (reinterpret_cast<char*>(      \
+  &reinterpret_cast<Summary*>(16)->f) - \
+   reinterpret_cast<char*>(16))
+
+#define ZR_(first, last) do {                              \
+    size_t f = OFFSET_OF_FIELD_(first);                    \
+    size_t n = OFFSET_OF_FIELD_(last) - f + sizeof(last);  \
+    ::memset(&first, 0, n);                                \
+  } while (0)
+
+  ZR_(sample_count_, sample_sum_);
+
+#undef OFFSET_OF_FIELD_
+#undef ZR_
+
+  quantile_.Clear();
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+  mutable_unknown_fields()->Clear();
+}
+
+bool Summary::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:io.prometheus.client.Summary)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoff(127);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // optional uint64 sample_count = 1;
+      case 1: {
+        if (tag == 8) {
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   ::google::protobuf::uint64, ::google::protobuf::internal::WireFormatLite::TYPE_UINT64>(
+                 input, &sample_count_)));
+          set_has_sample_count();
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(17)) goto parse_sample_sum;
+        break;
+      }
+
+      // optional double sample_sum = 2;
+      case 2: {
+        if (tag == 17) {
+         parse_sample_sum:
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   double, ::google::protobuf::internal::WireFormatLite::TYPE_DOUBLE>(
+                 input, &sample_sum_)));
+          set_has_sample_sum();
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(26)) goto parse_quantile;
+        break;
+      }
+
+      // repeated .io.prometheus.client.Quantile quantile = 3;
+      case 3: {
+        if (tag == 26) {
+         parse_quantile:
+          DO_(::google::protobuf::internal::WireFormatLite::ReadMessageNoVirtual(
+                input, add_quantile()));
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(26)) goto parse_quantile;
+        if (input->ExpectAtEnd()) goto success;
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0 ||
+            ::google::protobuf::internal::WireFormatLite::GetTagWireType(tag) ==
+            ::google::protobuf::internal::WireFormatLite::WIRETYPE_END_GROUP) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:io.prometheus.client.Summary)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:io.prometheus.client.Summary)
+  return false;
+#undef DO_
+}
+
+void Summary::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:io.prometheus.client.Summary)
+  // optional uint64 sample_count = 1;
+  if (has_sample_count()) {
+    ::google::protobuf::internal::WireFormatLite::WriteUInt64(1, this->sample_count(), output);
+  }
+
+  // optional double sample_sum = 2;
+  if (has_sample_sum()) {
+    ::google::protobuf::internal::WireFormatLite::WriteDouble(2, this->sample_sum(), output);
+  }
+
+  // repeated .io.prometheus.client.Quantile quantile = 3;
+  for (int i = 0; i < this->quantile_size(); i++) {
+    ::google::protobuf::internal::WireFormatLite::WriteMessageMaybeToArray(
+      3, this->quantile(i), output);
+  }
+
+  if (!unknown_fields().empty()) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        unknown_fields(), output);
+  }
+  // @@protoc_insertion_point(serialize_end:io.prometheus.client.Summary)
+}
+
+::google::protobuf::uint8* Summary::SerializeWithCachedSizesToArray(
+    ::google::protobuf::uint8* target) const {
+  // @@protoc_insertion_point(serialize_to_array_start:io.prometheus.client.Summary)
+  // optional uint64 sample_count = 1;
+  if (has_sample_count()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteUInt64ToArray(1, this->sample_count(), target);
+  }
+
+  // optional double sample_sum = 2;
+  if (has_sample_sum()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteDoubleToArray(2, this->sample_sum(), target);
+  }
+
+  // repeated .io.prometheus.client.Quantile quantile = 3;
+  for (int i = 0; i < this->quantile_size(); i++) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      WriteMessageNoVirtualToArray(
+        3, this->quantile(i), target);
+  }
+
+  if (!unknown_fields().empty()) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        unknown_fields(), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:io.prometheus.client.Summary)
+  return target;
+}
+
+int Summary::ByteSize() const {
+  int total_size = 0;
+
+  if (_has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    // optional uint64 sample_count = 1;
+    if (has_sample_count()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::UInt64Size(
+          this->sample_count());
+    }
+
+    // optional double sample_sum = 2;
+    if (has_sample_sum()) {
+      total_size += 1 + 8;
+    }
+
+  }
+  // repeated .io.prometheus.client.Quantile quantile = 3;
+  total_size += 1 * this->quantile_size();
+  for (int i = 0; i < this->quantile_size(); i++) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSizeNoVirtual(
+        this->quantile(i));
+  }
+
+  if (!unknown_fields().empty()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        unknown_fields());
+  }
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = total_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void Summary::MergeFrom(const ::google::protobuf::Message& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  const Summary* source =
+    ::google::protobuf::internal::dynamic_cast_if_available<const Summary*>(
+      &from);
+  if (source == NULL) {
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+    MergeFrom(*source);
+  }
+}
+
+void Summary::MergeFrom(const Summary& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  quantile_.MergeFrom(from.quantile_);
+  if (from._has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    if (from.has_sample_count()) {
+      set_sample_count(from.sample_count());
+    }
+    if (from.has_sample_sum()) {
+      set_sample_sum(from.sample_sum());
+    }
+  }
+  mutable_unknown_fields()->MergeFrom(from.unknown_fields());
+}
+
+void Summary::CopyFrom(const ::google::protobuf::Message& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void Summary::CopyFrom(const Summary& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool Summary::IsInitialized() const {
+
+  return true;
+}
+
+void Summary::Swap(Summary* other) {
+  if (other != this) {
+    std::swap(sample_count_, other->sample_count_);
+    std::swap(sample_sum_, other->sample_sum_);
+    quantile_.Swap(&other->quantile_);
+    std::swap(_has_bits_[0], other->_has_bits_[0]);
+    _unknown_fields_.Swap(&other->_unknown_fields_);
+    std::swap(_cached_size_, other->_cached_size_);
+  }
+}
+
+::google::protobuf::Metadata Summary::GetMetadata() const {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::Metadata metadata;
+  metadata.descriptor = Summary_descriptor_;
+  metadata.reflection = Summary_reflection_;
+  return metadata;
+}
+
+
+// ===================================================================
+
+#ifndef _MSC_VER
+const int Untyped::kValueFieldNumber;
+#endif  // !_MSC_VER
+
+Untyped::Untyped()
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:io.prometheus.client.Untyped)
+}
+
+void Untyped::InitAsDefaultInstance() {
+}
+
+Untyped::Untyped(const Untyped& from)
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  MergeFrom(from);
+  // @@protoc_insertion_point(copy_constructor:io.prometheus.client.Untyped)
+}
+
+void Untyped::SharedCtor() {
+  _cached_size_ = 0;
+  value_ = 0;
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+}
+
+Untyped::~Untyped() {
+  // @@protoc_insertion_point(destructor:io.prometheus.client.Untyped)
+  SharedDtor();
+}
+
+void Untyped::SharedDtor() {
+  if (this != default_instance_) {
+  }
+}
+
+void Untyped::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* Untyped::descriptor() {
+  protobuf_AssignDescriptorsOnce();
+  return Untyped_descriptor_;
+}
+
+const Untyped& Untyped::default_instance() {
+  if (default_instance_ == NULL) protobuf_AddDesc_metrics_2eproto();
+  return *default_instance_;
+}
+
+Untyped* Untyped::default_instance_ = NULL;
+
+Untyped* Untyped::New() const {
+  return new Untyped;
+}
+
+void Untyped::Clear() {
+  value_ = 0;
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+  mutable_unknown_fields()->Clear();
+}
+
+bool Untyped::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:io.prometheus.client.Untyped)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoff(127);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // optional double value = 1;
+      case 1: {
+        if (tag == 9) {
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   double, ::google::protobuf::internal::WireFormatLite::TYPE_DOUBLE>(
+                 input, &value_)));
+          set_has_value();
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectAtEnd()) goto success;
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0 ||
+            ::google::protobuf::internal::WireFormatLite::GetTagWireType(tag) ==
+            ::google::protobuf::internal::WireFormatLite::WIRETYPE_END_GROUP) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:io.prometheus.client.Untyped)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:io.prometheus.client.Untyped)
+  return false;
+#undef DO_
+}
+
+void Untyped::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:io.prometheus.client.Untyped)
+  // optional double value = 1;
+  if (has_value()) {
+    ::google::protobuf::internal::WireFormatLite::WriteDouble(1, this->value(), output);
+  }
+
+  if (!unknown_fields().empty()) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        unknown_fields(), output);
+  }
+  // @@protoc_insertion_point(serialize_end:io.prometheus.client.Untyped)
+}
+
+::google::protobuf::uint8* Untyped::SerializeWithCachedSizesToArray(
+    ::google::protobuf::uint8* target) const {
+  // @@protoc_insertion_point(serialize_to_array_start:io.prometheus.client.Untyped)
+  // optional double value = 1;
+  if (has_value()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteDoubleToArray(1, this->value(), target);
+  }
+
+  if (!unknown_fields().empty()) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        unknown_fields(), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:io.prometheus.client.Untyped)
+  return target;
+}
+
+int Untyped::ByteSize() const {
+  int total_size = 0;
+
+  if (_has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    // optional double value = 1;
+    if (has_value()) {
+      total_size += 1 + 8;
+    }
+
+  }
+  if (!unknown_fields().empty()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        unknown_fields());
+  }
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = total_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void Untyped::MergeFrom(const ::google::protobuf::Message& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  const Untyped* source =
+    ::google::protobuf::internal::dynamic_cast_if_available<const Untyped*>(
+      &from);
+  if (source == NULL) {
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+    MergeFrom(*source);
+  }
+}
+
+void Untyped::MergeFrom(const Untyped& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  if (from._has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    if (from.has_value()) {
+      set_value(from.value());
+    }
+  }
+  mutable_unknown_fields()->MergeFrom(from.unknown_fields());
+}
+
+void Untyped::CopyFrom(const ::google::protobuf::Message& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void Untyped::CopyFrom(const Untyped& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool Untyped::IsInitialized() const {
+
+  return true;
+}
+
+void Untyped::Swap(Untyped* other) {
+  if (other != this) {
+    std::swap(value_, other->value_);
+    std::swap(_has_bits_[0], other->_has_bits_[0]);
+    _unknown_fields_.Swap(&other->_unknown_fields_);
+    std::swap(_cached_size_, other->_cached_size_);
+  }
+}
+
+::google::protobuf::Metadata Untyped::GetMetadata() const {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::Metadata metadata;
+  metadata.descriptor = Untyped_descriptor_;
+  metadata.reflection = Untyped_reflection_;
+  return metadata;
+}
+
+
+// ===================================================================
+
+#ifndef _MSC_VER
+const int Histogram::kSampleCountFieldNumber;
+const int Histogram::kSampleSumFieldNumber;
+const int Histogram::kBucketFieldNumber;
+#endif  // !_MSC_VER
+
+Histogram::Histogram()
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:io.prometheus.client.Histogram)
+}
+
+void Histogram::InitAsDefaultInstance() {
+}
+
+Histogram::Histogram(const Histogram& from)
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  MergeFrom(from);
+  // @@protoc_insertion_point(copy_constructor:io.prometheus.client.Histogram)
+}
+
+void Histogram::SharedCtor() {
+  _cached_size_ = 0;
+  sample_count_ = GOOGLE_ULONGLONG(0);
+  sample_sum_ = 0;
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+}
+
+Histogram::~Histogram() {
+  // @@protoc_insertion_point(destructor:io.prometheus.client.Histogram)
+  SharedDtor();
+}
+
+void Histogram::SharedDtor() {
+  if (this != default_instance_) {
+  }
+}
+
+void Histogram::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* Histogram::descriptor() {
+  protobuf_AssignDescriptorsOnce();
+  return Histogram_descriptor_;
+}
+
+const Histogram& Histogram::default_instance() {
+  if (default_instance_ == NULL) protobuf_AddDesc_metrics_2eproto();
+  return *default_instance_;
+}
+
+Histogram* Histogram::default_instance_ = NULL;
+
+Histogram* Histogram::New() const {
+  return new Histogram;
+}
+
+void Histogram::Clear() {
+#define OFFSET_OF_FIELD_(f) (reinterpret_cast<char*>(      \
+  &reinterpret_cast<Histogram*>(16)->f) - \
+   reinterpret_cast<char*>(16))
+
+#define ZR_(first, last) do {                              \
+    size_t f = OFFSET_OF_FIELD_(first);                    \
+    size_t n = OFFSET_OF_FIELD_(last) - f + sizeof(last);  \
+    ::memset(&first, 0, n);                                \
+  } while (0)
+
+  ZR_(sample_count_, sample_sum_);
+
+#undef OFFSET_OF_FIELD_
+#undef ZR_
+
+  bucket_.Clear();
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+  mutable_unknown_fields()->Clear();
+}
+
+bool Histogram::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:io.prometheus.client.Histogram)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoff(127);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // optional uint64 sample_count = 1;
+      case 1: {
+        if (tag == 8) {
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   ::google::protobuf::uint64, ::google::protobuf::internal::WireFormatLite::TYPE_UINT64>(
+                 input, &sample_count_)));
+          set_has_sample_count();
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(17)) goto parse_sample_sum;
+        break;
+      }
+
+      // optional double sample_sum = 2;
+      case 2: {
+        if (tag == 17) {
+         parse_sample_sum:
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   double, ::google::protobuf::internal::WireFormatLite::TYPE_DOUBLE>(
+                 input, &sample_sum_)));
+          set_has_sample_sum();
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(26)) goto parse_bucket;
+        break;
+      }
+
+      // repeated .io.prometheus.client.Bucket bucket = 3;
+      case 3: {
+        if (tag == 26) {
+         parse_bucket:
+          DO_(::google::protobuf::internal::WireFormatLite::ReadMessageNoVirtual(
+                input, add_bucket()));
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(26)) goto parse_bucket;
+        if (input->ExpectAtEnd()) goto success;
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0 ||
+            ::google::protobuf::internal::WireFormatLite::GetTagWireType(tag) ==
+            ::google::protobuf::internal::WireFormatLite::WIRETYPE_END_GROUP) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:io.prometheus.client.Histogram)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:io.prometheus.client.Histogram)
+  return false;
+#undef DO_
+}
+
+void Histogram::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:io.prometheus.client.Histogram)
+  // optional uint64 sample_count = 1;
+  if (has_sample_count()) {
+    ::google::protobuf::internal::WireFormatLite::WriteUInt64(1, this->sample_count(), output);
+  }
+
+  // optional double sample_sum = 2;
+  if (has_sample_sum()) {
+    ::google::protobuf::internal::WireFormatLite::WriteDouble(2, this->sample_sum(), output);
+  }
+
+  // repeated .io.prometheus.client.Bucket bucket = 3;
+  for (int i = 0; i < this->bucket_size(); i++) {
+    ::google::protobuf::internal::WireFormatLite::WriteMessageMaybeToArray(
+      3, this->bucket(i), output);
+  }
+
+  if (!unknown_fields().empty()) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        unknown_fields(), output);
+  }
+  // @@protoc_insertion_point(serialize_end:io.prometheus.client.Histogram)
+}
+
+::google::protobuf::uint8* Histogram::SerializeWithCachedSizesToArray(
+    ::google::protobuf::uint8* target) const {
+  // @@protoc_insertion_point(serialize_to_array_start:io.prometheus.client.Histogram)
+  // optional uint64 sample_count = 1;
+  if (has_sample_count()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteUInt64ToArray(1, this->sample_count(), target);
+  }
+
+  // optional double sample_sum = 2;
+  if (has_sample_sum()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteDoubleToArray(2, this->sample_sum(), target);
+  }
+
+  // repeated .io.prometheus.client.Bucket bucket = 3;
+  for (int i = 0; i < this->bucket_size(); i++) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      WriteMessageNoVirtualToArray(
+        3, this->bucket(i), target);
+  }
+
+  if (!unknown_fields().empty()) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        unknown_fields(), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:io.prometheus.client.Histogram)
+  return target;
+}
+
+int Histogram::ByteSize() const {
+  int total_size = 0;
+
+  if (_has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    // optional uint64 sample_count = 1;
+    if (has_sample_count()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::UInt64Size(
+          this->sample_count());
+    }
+
+    // optional double sample_sum = 2;
+    if (has_sample_sum()) {
+      total_size += 1 + 8;
+    }
+
+  }
+  // repeated .io.prometheus.client.Bucket bucket = 3;
+  total_size += 1 * this->bucket_size();
+  for (int i = 0; i < this->bucket_size(); i++) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSizeNoVirtual(
+        this->bucket(i));
+  }
+
+  if (!unknown_fields().empty()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        unknown_fields());
+  }
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = total_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void Histogram::MergeFrom(const ::google::protobuf::Message& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  const Histogram* source =
+    ::google::protobuf::internal::dynamic_cast_if_available<const Histogram*>(
+      &from);
+  if (source == NULL) {
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+    MergeFrom(*source);
+  }
+}
+
+void Histogram::MergeFrom(const Histogram& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  bucket_.MergeFrom(from.bucket_);
+  if (from._has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    if (from.has_sample_count()) {
+      set_sample_count(from.sample_count());
+    }
+    if (from.has_sample_sum()) {
+      set_sample_sum(from.sample_sum());
+    }
+  }
+  mutable_unknown_fields()->MergeFrom(from.unknown_fields());
+}
+
+void Histogram::CopyFrom(const ::google::protobuf::Message& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void Histogram::CopyFrom(const Histogram& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool Histogram::IsInitialized() const {
+
+  return true;
+}
+
+void Histogram::Swap(Histogram* other) {
+  if (other != this) {
+    std::swap(sample_count_, other->sample_count_);
+    std::swap(sample_sum_, other->sample_sum_);
+    bucket_.Swap(&other->bucket_);
+    std::swap(_has_bits_[0], other->_has_bits_[0]);
+    _unknown_fields_.Swap(&other->_unknown_fields_);
+    std::swap(_cached_size_, other->_cached_size_);
+  }
+}
+
+::google::protobuf::Metadata Histogram::GetMetadata() const {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::Metadata metadata;
+  metadata.descriptor = Histogram_descriptor_;
+  metadata.reflection = Histogram_reflection_;
+  return metadata;
+}
+
+
+// ===================================================================
+
+#ifndef _MSC_VER
+const int Bucket::kCumulativeCountFieldNumber;
+const int Bucket::kUpperBoundFieldNumber;
+#endif  // !_MSC_VER
+
+Bucket::Bucket()
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:io.prometheus.client.Bucket)
+}
+
+void Bucket::InitAsDefaultInstance() {
+}
+
+Bucket::Bucket(const Bucket& from)
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  MergeFrom(from);
+  // @@protoc_insertion_point(copy_constructor:io.prometheus.client.Bucket)
+}
+
+void Bucket::SharedCtor() {
+  _cached_size_ = 0;
+  cumulative_count_ = GOOGLE_ULONGLONG(0);
+  upper_bound_ = 0;
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+}
+
+Bucket::~Bucket() {
+  // @@protoc_insertion_point(destructor:io.prometheus.client.Bucket)
+  SharedDtor();
+}
+
+void Bucket::SharedDtor() {
+  if (this != default_instance_) {
+  }
+}
+
+void Bucket::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* Bucket::descriptor() {
+  protobuf_AssignDescriptorsOnce();
+  return Bucket_descriptor_;
+}
+
+const Bucket& Bucket::default_instance() {
+  if (default_instance_ == NULL) protobuf_AddDesc_metrics_2eproto();
+  return *default_instance_;
+}
+
+Bucket* Bucket::default_instance_ = NULL;
+
+Bucket* Bucket::New() const {
+  return new Bucket;
+}
+
+void Bucket::Clear() {
+#define OFFSET_OF_FIELD_(f) (reinterpret_cast<char*>(      \
+  &reinterpret_cast<Bucket*>(16)->f) - \
+   reinterpret_cast<char*>(16))
+
+#define ZR_(first, last) do {                              \
+    size_t f = OFFSET_OF_FIELD_(first);                    \
+    size_t n = OFFSET_OF_FIELD_(last) - f + sizeof(last);  \
+    ::memset(&first, 0, n);                                \
+  } while (0)
+
+  ZR_(cumulative_count_, upper_bound_);
+
+#undef OFFSET_OF_FIELD_
+#undef ZR_
+
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+  mutable_unknown_fields()->Clear();
+}
+
+bool Bucket::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:io.prometheus.client.Bucket)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoff(127);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // optional uint64 cumulative_count = 1;
+      case 1: {
+        if (tag == 8) {
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   ::google::protobuf::uint64, ::google::protobuf::internal::WireFormatLite::TYPE_UINT64>(
+                 input, &cumulative_count_)));
+          set_has_cumulative_count();
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(17)) goto parse_upper_bound;
+        break;
+      }
+
+      // optional double upper_bound = 2;
+      case 2: {
+        if (tag == 17) {
+         parse_upper_bound:
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   double, ::google::protobuf::internal::WireFormatLite::TYPE_DOUBLE>(
+                 input, &upper_bound_)));
+          set_has_upper_bound();
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectAtEnd()) goto success;
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0 ||
+            ::google::protobuf::internal::WireFormatLite::GetTagWireType(tag) ==
+            ::google::protobuf::internal::WireFormatLite::WIRETYPE_END_GROUP) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:io.prometheus.client.Bucket)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:io.prometheus.client.Bucket)
+  return false;
+#undef DO_
+}
+
+void Bucket::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:io.prometheus.client.Bucket)
+  // optional uint64 cumulative_count = 1;
+  if (has_cumulative_count()) {
+    ::google::protobuf::internal::WireFormatLite::WriteUInt64(1, this->cumulative_count(), output);
+  }
+
+  // optional double upper_bound = 2;
+  if (has_upper_bound()) {
+    ::google::protobuf::internal::WireFormatLite::WriteDouble(2, this->upper_bound(), output);
+  }
+
+  if (!unknown_fields().empty()) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        unknown_fields(), output);
+  }
+  // @@protoc_insertion_point(serialize_end:io.prometheus.client.Bucket)
+}
+
+::google::protobuf::uint8* Bucket::SerializeWithCachedSizesToArray(
+    ::google::protobuf::uint8* target) const {
+  // @@protoc_insertion_point(serialize_to_array_start:io.prometheus.client.Bucket)
+  // optional uint64 cumulative_count = 1;
+  if (has_cumulative_count()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteUInt64ToArray(1, this->cumulative_count(), target);
+  }
+
+  // optional double upper_bound = 2;
+  if (has_upper_bound()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteDoubleToArray(2, this->upper_bound(), target);
+  }
+
+  if (!unknown_fields().empty()) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        unknown_fields(), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:io.prometheus.client.Bucket)
+  return target;
+}
+
+int Bucket::ByteSize() const {
+  int total_size = 0;
+
+  if (_has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    // optional uint64 cumulative_count = 1;
+    if (has_cumulative_count()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::UInt64Size(
+          this->cumulative_count());
+    }
+
+    // optional double upper_bound = 2;
+    if (has_upper_bound()) {
+      total_size += 1 + 8;
+    }
+
+  }
+  if (!unknown_fields().empty()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        unknown_fields());
+  }
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = total_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void Bucket::MergeFrom(const ::google::protobuf::Message& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  const Bucket* source =
+    ::google::protobuf::internal::dynamic_cast_if_available<const Bucket*>(
+      &from);
+  if (source == NULL) {
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+    MergeFrom(*source);
+  }
+}
+
+void Bucket::MergeFrom(const Bucket& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  if (from._has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    if (from.has_cumulative_count()) {
+      set_cumulative_count(from.cumulative_count());
+    }
+    if (from.has_upper_bound()) {
+      set_upper_bound(from.upper_bound());
+    }
+  }
+  mutable_unknown_fields()->MergeFrom(from.unknown_fields());
+}
+
+void Bucket::CopyFrom(const ::google::protobuf::Message& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void Bucket::CopyFrom(const Bucket& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool Bucket::IsInitialized() const {
+
+  return true;
+}
+
+void Bucket::Swap(Bucket* other) {
+  if (other != this) {
+    std::swap(cumulative_count_, other->cumulative_count_);
+    std::swap(upper_bound_, other->upper_bound_);
+    std::swap(_has_bits_[0], other->_has_bits_[0]);
+    _unknown_fields_.Swap(&other->_unknown_fields_);
+    std::swap(_cached_size_, other->_cached_size_);
+  }
+}
+
+::google::protobuf::Metadata Bucket::GetMetadata() const {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::Metadata metadata;
+  metadata.descriptor = Bucket_descriptor_;
+  metadata.reflection = Bucket_reflection_;
+  return metadata;
+}
+
+
+// ===================================================================
+
+#ifndef _MSC_VER
+const int Metric::kLabelFieldNumber;
+const int Metric::kGaugeFieldNumber;
+const int Metric::kCounterFieldNumber;
+const int Metric::kSummaryFieldNumber;
+const int Metric::kUntypedFieldNumber;
+const int Metric::kHistogramFieldNumber;
+const int Metric::kTimestampMsFieldNumber;
+#endif  // !_MSC_VER
+
+Metric::Metric()
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:io.prometheus.client.Metric)
+}
+
+void Metric::InitAsDefaultInstance() {
+  gauge_ = const_cast< ::io::prometheus::client::Gauge*>(&::io::prometheus::client::Gauge::default_instance());
+  counter_ = const_cast< ::io::prometheus::client::Counter*>(&::io::prometheus::client::Counter::default_instance());
+  summary_ = const_cast< ::io::prometheus::client::Summary*>(&::io::prometheus::client::Summary::default_instance());
+  untyped_ = const_cast< ::io::prometheus::client::Untyped*>(&::io::prometheus::client::Untyped::default_instance());
+  histogram_ = const_cast< ::io::prometheus::client::Histogram*>(&::io::prometheus::client::Histogram::default_instance());
+}
+
+Metric::Metric(const Metric& from)
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  MergeFrom(from);
+  // @@protoc_insertion_point(copy_constructor:io.prometheus.client.Metric)
+}
+
+void Metric::SharedCtor() {
+  _cached_size_ = 0;
+  gauge_ = NULL;
+  counter_ = NULL;
+  summary_ = NULL;
+  untyped_ = NULL;
+  histogram_ = NULL;
+  timestamp_ms_ = GOOGLE_LONGLONG(0);
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+}
+
+Metric::~Metric() {
+  // @@protoc_insertion_point(destructor:io.prometheus.client.Metric)
+  SharedDtor();
+}
+
+void Metric::SharedDtor() {
+  if (this != default_instance_) {
+    delete gauge_;
+    delete counter_;
+    delete summary_;
+    delete untyped_;
+    delete histogram_;
+  }
+}
+
+void Metric::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* Metric::descriptor() {
+  protobuf_AssignDescriptorsOnce();
+  return Metric_descriptor_;
+}
+
+const Metric& Metric::default_instance() {
+  if (default_instance_ == NULL) protobuf_AddDesc_metrics_2eproto();
+  return *default_instance_;
+}
+
+Metric* Metric::default_instance_ = NULL;
+
+Metric* Metric::New() const {
+  return new Metric;
+}
+
+void Metric::Clear() {
+  if (_has_bits_[0 / 32] & 126) {
+    if (has_gauge()) {
+      if (gauge_ != NULL) gauge_->::io::prometheus::client::Gauge::Clear();
+    }
+    if (has_counter()) {
+      if (counter_ != NULL) counter_->::io::prometheus::client::Counter::Clear();
+    }
+    if (has_summary()) {
+      if (summary_ != NULL) summary_->::io::prometheus::client::Summary::Clear();
+    }
+    if (has_untyped()) {
+      if (untyped_ != NULL) untyped_->::io::prometheus::client::Untyped::Clear();
+    }
+    if (has_histogram()) {
+      if (histogram_ != NULL) histogram_->::io::prometheus::client::Histogram::Clear();
+    }
+    timestamp_ms_ = GOOGLE_LONGLONG(0);
+  }
+  label_.Clear();
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+  mutable_unknown_fields()->Clear();
+}
+
+bool Metric::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:io.prometheus.client.Metric)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoff(127);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // repeated .io.prometheus.client.LabelPair label = 1;
+      case 1: {
+        if (tag == 10) {
+         parse_label:
+          DO_(::google::protobuf::internal::WireFormatLite::ReadMessageNoVirtual(
+                input, add_label()));
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(10)) goto parse_label;
+        if (input->ExpectTag(18)) goto parse_gauge;
+        break;
+      }
+
+      // optional .io.prometheus.client.Gauge gauge = 2;
+      case 2: {
+        if (tag == 18) {
+         parse_gauge:
+          DO_(::google::protobuf::internal::WireFormatLite::ReadMessageNoVirtual(
+               input, mutable_gauge()));
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(26)) goto parse_counter;
+        break;
+      }
+
+      // optional .io.prometheus.client.Counter counter = 3;
+      case 3: {
+        if (tag == 26) {
+         parse_counter:
+          DO_(::google::protobuf::internal::WireFormatLite::ReadMessageNoVirtual(
+               input, mutable_counter()));
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(34)) goto parse_summary;
+        break;
+      }
+
+      // optional .io.prometheus.client.Summary summary = 4;
+      case 4: {
+        if (tag == 34) {
+         parse_summary:
+          DO_(::google::protobuf::internal::WireFormatLite::ReadMessageNoVirtual(
+               input, mutable_summary()));
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(42)) goto parse_untyped;
+        break;
+      }
+
+      // optional .io.prometheus.client.Untyped untyped = 5;
+      case 5: {
+        if (tag == 42) {
+         parse_untyped:
+          DO_(::google::protobuf::internal::WireFormatLite::ReadMessageNoVirtual(
+               input, mutable_untyped()));
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(48)) goto parse_timestamp_ms;
+        break;
+      }
+
+      // optional int64 timestamp_ms = 6;
+      case 6: {
+        if (tag == 48) {
+         parse_timestamp_ms:
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   ::google::protobuf::int64, ::google::protobuf::internal::WireFormatLite::TYPE_INT64>(
+                 input, &timestamp_ms_)));
+          set_has_timestamp_ms();
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(58)) goto parse_histogram;
+        break;
+      }
+
+      // optional .io.prometheus.client.Histogram histogram = 7;
+      case 7: {
+        if (tag == 58) {
+         parse_histogram:
+          DO_(::google::protobuf::internal::WireFormatLite::ReadMessageNoVirtual(
+               input, mutable_histogram()));
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectAtEnd()) goto success;
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0 ||
+            ::google::protobuf::internal::WireFormatLite::GetTagWireType(tag) ==
+            ::google::protobuf::internal::WireFormatLite::WIRETYPE_END_GROUP) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:io.prometheus.client.Metric)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:io.prometheus.client.Metric)
+  return false;
+#undef DO_
+}
+
+void Metric::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:io.prometheus.client.Metric)
+  // repeated .io.prometheus.client.LabelPair label = 1;
+  for (int i = 0; i < this->label_size(); i++) {
+    ::google::protobuf::internal::WireFormatLite::WriteMessageMaybeToArray(
+      1, this->label(i), output);
+  }
+
+  // optional .io.prometheus.client.Gauge gauge = 2;
+  if (has_gauge()) {
+    ::google::protobuf::internal::WireFormatLite::WriteMessageMaybeToArray(
+      2, this->gauge(), output);
+  }
+
+  // optional .io.prometheus.client.Counter counter = 3;
+  if (has_counter()) {
+    ::google::protobuf::internal::WireFormatLite::WriteMessageMaybeToArray(
+      3, this->counter(), output);
+  }
+
+  // optional .io.prometheus.client.Summary summary = 4;
+  if (has_summary()) {
+    ::google::protobuf::internal::WireFormatLite::WriteMessageMaybeToArray(
+      4, this->summary(), output);
+  }
+
+  // optional .io.prometheus.client.Untyped untyped = 5;
+  if (has_untyped()) {
+    ::google::protobuf::internal::WireFormatLite::WriteMessageMaybeToArray(
+      5, this->untyped(), output);
+  }
+
+  // optional int64 timestamp_ms = 6;
+  if (has_timestamp_ms()) {
+    ::google::protobuf::internal::WireFormatLite::WriteInt64(6, this->timestamp_ms(), output);
+  }
+
+  // optional .io.prometheus.client.Histogram histogram = 7;
+  if (has_histogram()) {
+    ::google::protobuf::internal::WireFormatLite::WriteMessageMaybeToArray(
+      7, this->histogram(), output);
+  }
+
+  if (!unknown_fields().empty()) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        unknown_fields(), output);
+  }
+  // @@protoc_insertion_point(serialize_end:io.prometheus.client.Metric)
+}
+
+::google::protobuf::uint8* Metric::SerializeWithCachedSizesToArray(
+    ::google::protobuf::uint8* target) const {
+  // @@protoc_insertion_point(serialize_to_array_start:io.prometheus.client.Metric)
+  // repeated .io.prometheus.client.LabelPair label = 1;
+  for (int i = 0; i < this->label_size(); i++) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      WriteMessageNoVirtualToArray(
+        1, this->label(i), target);
+  }
+
+  // optional .io.prometheus.client.Gauge gauge = 2;
+  if (has_gauge()) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      WriteMessageNoVirtualToArray(
+        2, this->gauge(), target);
+  }
+
+  // optional .io.prometheus.client.Counter counter = 3;
+  if (has_counter()) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      WriteMessageNoVirtualToArray(
+        3, this->counter(), target);
+  }
+
+  // optional .io.prometheus.client.Summary summary = 4;
+  if (has_summary()) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      WriteMessageNoVirtualToArray(
+        4, this->summary(), target);
+  }
+
+  // optional .io.prometheus.client.Untyped untyped = 5;
+  if (has_untyped()) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      WriteMessageNoVirtualToArray(
+        5, this->untyped(), target);
+  }
+
+  // optional int64 timestamp_ms = 6;
+  if (has_timestamp_ms()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteInt64ToArray(6, this->timestamp_ms(), target);
+  }
+
+  // optional .io.prometheus.client.Histogram histogram = 7;
+  if (has_histogram()) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      WriteMessageNoVirtualToArray(
+        7, this->histogram(), target);
+  }
+
+  if (!unknown_fields().empty()) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        unknown_fields(), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:io.prometheus.client.Metric)
+  return target;
+}
+
+int Metric::ByteSize() const {
+  int total_size = 0;
+
+  if (_has_bits_[1 / 32] & (0xffu << (1 % 32))) {
+    // optional .io.prometheus.client.Gauge gauge = 2;
+    if (has_gauge()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSizeNoVirtual(
+          this->gauge());
+    }
+
+    // optional .io.prometheus.client.Counter counter = 3;
+    if (has_counter()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSizeNoVirtual(
+          this->counter());
+    }
+
+    // optional .io.prometheus.client.Summary summary = 4;
+    if (has_summary()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSizeNoVirtual(
+          this->summary());
+    }
+
+    // optional .io.prometheus.client.Untyped untyped = 5;
+    if (has_untyped()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSizeNoVirtual(
+          this->untyped());
+    }
+
+    // optional .io.prometheus.client.Histogram histogram = 7;
+    if (has_histogram()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSizeNoVirtual(
+          this->histogram());
+    }
+
+    // optional int64 timestamp_ms = 6;
+    if (has_timestamp_ms()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::Int64Size(
+          this->timestamp_ms());
+    }
+
+  }
+  // repeated .io.prometheus.client.LabelPair label = 1;
+  total_size += 1 * this->label_size();
+  for (int i = 0; i < this->label_size(); i++) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSizeNoVirtual(
+        this->label(i));
+  }
+
+  if (!unknown_fields().empty()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        unknown_fields());
+  }
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = total_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void Metric::MergeFrom(const ::google::protobuf::Message& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  const Metric* source =
+    ::google::protobuf::internal::dynamic_cast_if_available<const Metric*>(
+      &from);
+  if (source == NULL) {
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+    MergeFrom(*source);
+  }
+}
+
+void Metric::MergeFrom(const Metric& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  label_.MergeFrom(from.label_);
+  if (from._has_bits_[1 / 32] & (0xffu << (1 % 32))) {
+    if (from.has_gauge()) {
+      mutable_gauge()->::io::prometheus::client::Gauge::MergeFrom(from.gauge());
+    }
+    if (from.has_counter()) {
+      mutable_counter()->::io::prometheus::client::Counter::MergeFrom(from.counter());
+    }
+    if (from.has_summary()) {
+      mutable_summary()->::io::prometheus::client::Summary::MergeFrom(from.summary());
+    }
+    if (from.has_untyped()) {
+      mutable_untyped()->::io::prometheus::client::Untyped::MergeFrom(from.untyped());
+    }
+    if (from.has_histogram()) {
+      mutable_histogram()->::io::prometheus::client::Histogram::MergeFrom(from.histogram());
+    }
+    if (from.has_timestamp_ms()) {
+      set_timestamp_ms(from.timestamp_ms());
+    }
+  }
+  mutable_unknown_fields()->MergeFrom(from.unknown_fields());
+}
+
+void Metric::CopyFrom(const ::google::protobuf::Message& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void Metric::CopyFrom(const Metric& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool Metric::IsInitialized() const {
+
+  return true;
+}
+
+void Metric::Swap(Metric* other) {
+  if (other != this) {
+    label_.Swap(&other->label_);
+    std::swap(gauge_, other->gauge_);
+    std::swap(counter_, other->counter_);
+    std::swap(summary_, other->summary_);
+    std::swap(untyped_, other->untyped_);
+    std::swap(histogram_, other->histogram_);
+    std::swap(timestamp_ms_, other->timestamp_ms_);
+    std::swap(_has_bits_[0], other->_has_bits_[0]);
+    _unknown_fields_.Swap(&other->_unknown_fields_);
+    std::swap(_cached_size_, other->_cached_size_);
+  }
+}
+
+::google::protobuf::Metadata Metric::GetMetadata() const {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::Metadata metadata;
+  metadata.descriptor = Metric_descriptor_;
+  metadata.reflection = Metric_reflection_;
+  return metadata;
+}
+
+
+// ===================================================================
+
+#ifndef _MSC_VER
+const int MetricFamily::kNameFieldNumber;
+const int MetricFamily::kHelpFieldNumber;
+const int MetricFamily::kTypeFieldNumber;
+const int MetricFamily::kMetricFieldNumber;
+#endif  // !_MSC_VER
+
+MetricFamily::MetricFamily()
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  // @@protoc_insertion_point(constructor:io.prometheus.client.MetricFamily)
+}
+
+void MetricFamily::InitAsDefaultInstance() {
+}
+
+MetricFamily::MetricFamily(const MetricFamily& from)
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  MergeFrom(from);
+  // @@protoc_insertion_point(copy_constructor:io.prometheus.client.MetricFamily)
+}
+
+void MetricFamily::SharedCtor() {
+  ::google::protobuf::internal::GetEmptyString();
+  _cached_size_ = 0;
+  name_ = const_cast< ::std::string*>(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+  help_ = const_cast< ::std::string*>(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+  type_ = 0;
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+}
+
+MetricFamily::~MetricFamily() {
+  // @@protoc_insertion_point(destructor:io.prometheus.client.MetricFamily)
+  SharedDtor();
+}
+
+void MetricFamily::SharedDtor() {
+  if (name_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    delete name_;
+  }
+  if (help_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    delete help_;
+  }
+  if (this != default_instance_) {
+  }
+}
+
+void MetricFamily::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* MetricFamily::descriptor() {
+  protobuf_AssignDescriptorsOnce();
+  return MetricFamily_descriptor_;
+}
+
+const MetricFamily& MetricFamily::default_instance() {
+  if (default_instance_ == NULL) protobuf_AddDesc_metrics_2eproto();
+  return *default_instance_;
+}
+
+MetricFamily* MetricFamily::default_instance_ = NULL;
+
+MetricFamily* MetricFamily::New() const {
+  return new MetricFamily;
+}
+
+void MetricFamily::Clear() {
+  if (_has_bits_[0 / 32] & 7) {
+    if (has_name()) {
+      if (name_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+        name_->clear();
+      }
+    }
+    if (has_help()) {
+      if (help_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+        help_->clear();
+      }
+    }
+    type_ = 0;
+  }
+  metric_.Clear();
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+  mutable_unknown_fields()->Clear();
+}
+
+bool MetricFamily::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!(EXPRESSION)) goto failure
+  ::google::protobuf::uint32 tag;
+  // @@protoc_insertion_point(parse_start:io.prometheus.client.MetricFamily)
+  for (;;) {
+    ::std::pair< ::google::protobuf::uint32, bool> p = input->ReadTagWithCutoff(127);
+    tag = p.first;
+    if (!p.second) goto handle_unusual;
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // optional string name = 1;
+      case 1: {
+        if (tag == 10) {
+          DO_(::google::protobuf::internal::WireFormatLite::ReadString(
+                input, this->mutable_name()));
+          ::google::protobuf::internal::WireFormat::VerifyUTF8StringNamedField(
+            this->name().data(), this->name().length(),
+            ::google::protobuf::internal::WireFormat::PARSE,
+            "name");
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(18)) goto parse_help;
+        break;
+      }
+
+      // optional string help = 2;
+      case 2: {
+        if (tag == 18) {
+         parse_help:
+          DO_(::google::protobuf::internal::WireFormatLite::ReadString(
+                input, this->mutable_help()));
+          ::google::protobuf::internal::WireFormat::VerifyUTF8StringNamedField(
+            this->help().data(), this->help().length(),
+            ::google::protobuf::internal::WireFormat::PARSE,
+            "help");
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(24)) goto parse_type;
+        break;
+      }
+
+      // optional .io.prometheus.client.MetricType type = 3;
+      case 3: {
+        if (tag == 24) {
+         parse_type:
+          int value;
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   int, ::google::protobuf::internal::WireFormatLite::TYPE_ENUM>(
+                 input, &value)));
+          if (::io::prometheus::client::MetricType_IsValid(value)) {
+            set_type(static_cast< ::io::prometheus::client::MetricType >(value));
+          } else {
+            mutable_unknown_fields()->AddVarint(3, value);
+          }
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(34)) goto parse_metric;
+        break;
+      }
+
+      // repeated .io.prometheus.client.Metric metric = 4;
+      case 4: {
+        if (tag == 34) {
+         parse_metric:
+          DO_(::google::protobuf::internal::WireFormatLite::ReadMessageNoVirtual(
+                input, add_metric()));
+        } else {
+          goto handle_unusual;
+        }
+        if (input->ExpectTag(34)) goto parse_metric;
+        if (input->ExpectAtEnd()) goto success;
+        break;
+      }
+
+      default: {
+      handle_unusual:
+        if (tag == 0 ||
+            ::google::protobuf::internal::WireFormatLite::GetTagWireType(tag) ==
+            ::google::protobuf::internal::WireFormatLite::WIRETYPE_END_GROUP) {
+          goto success;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+success:
+  // @@protoc_insertion_point(parse_success:io.prometheus.client.MetricFamily)
+  return true;
+failure:
+  // @@protoc_insertion_point(parse_failure:io.prometheus.client.MetricFamily)
+  return false;
+#undef DO_
+}
+
+void MetricFamily::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // @@protoc_insertion_point(serialize_start:io.prometheus.client.MetricFamily)
+  // optional string name = 1;
+  if (has_name()) {
+    ::google::protobuf::internal::WireFormat::VerifyUTF8StringNamedField(
+      this->name().data(), this->name().length(),
+      ::google::protobuf::internal::WireFormat::SERIALIZE,
+      "name");
+    ::google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(
+      1, this->name(), output);
+  }
+
+  // optional string help = 2;
+  if (has_help()) {
+    ::google::protobuf::internal::WireFormat::VerifyUTF8StringNamedField(
+      this->help().data(), this->help().length(),
+      ::google::protobuf::internal::WireFormat::SERIALIZE,
+      "help");
+    ::google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(
+      2, this->help(), output);
+  }
+
+  // optional .io.prometheus.client.MetricType type = 3;
+  if (has_type()) {
+    ::google::protobuf::internal::WireFormatLite::WriteEnum(
+      3, this->type(), output);
+  }
+
+  // repeated .io.prometheus.client.Metric metric = 4;
+  for (int i = 0; i < this->metric_size(); i++) {
+    ::google::protobuf::internal::WireFormatLite::WriteMessageMaybeToArray(
+      4, this->metric(i), output);
+  }
+
+  if (!unknown_fields().empty()) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        unknown_fields(), output);
+  }
+  // @@protoc_insertion_point(serialize_end:io.prometheus.client.MetricFamily)
+}
+
+::google::protobuf::uint8* MetricFamily::SerializeWithCachedSizesToArray(
+    ::google::protobuf::uint8* target) const {
+  // @@protoc_insertion_point(serialize_to_array_start:io.prometheus.client.MetricFamily)
+  // optional string name = 1;
+  if (has_name()) {
+    ::google::protobuf::internal::WireFormat::VerifyUTF8StringNamedField(
+      this->name().data(), this->name().length(),
+      ::google::protobuf::internal::WireFormat::SERIALIZE,
+      "name");
+    target =
+      ::google::protobuf::internal::WireFormatLite::WriteStringToArray(
+        1, this->name(), target);
+  }
+
+  // optional string help = 2;
+  if (has_help()) {
+    ::google::protobuf::internal::WireFormat::VerifyUTF8StringNamedField(
+      this->help().data(), this->help().length(),
+      ::google::protobuf::internal::WireFormat::SERIALIZE,
+      "help");
+    target =
+      ::google::protobuf::internal::WireFormatLite::WriteStringToArray(
+        2, this->help(), target);
+  }
+
+  // optional .io.prometheus.client.MetricType type = 3;
+  if (has_type()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteEnumToArray(
+      3, this->type(), target);
+  }
+
+  // repeated .io.prometheus.client.Metric metric = 4;
+  for (int i = 0; i < this->metric_size(); i++) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      WriteMessageNoVirtualToArray(
+        4, this->metric(i), target);
+  }
+
+  if (!unknown_fields().empty()) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        unknown_fields(), target);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:io.prometheus.client.MetricFamily)
+  return target;
+}
+
+int MetricFamily::ByteSize() const {
+  int total_size = 0;
+
+  if (_has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    // optional string name = 1;
+    if (has_name()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::StringSize(
+          this->name());
+    }
+
+    // optional string help = 2;
+    if (has_help()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::StringSize(
+          this->help());
+    }
+
+    // optional .io.prometheus.client.MetricType type = 3;
+    if (has_type()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::EnumSize(this->type());
+    }
+
+  }
+  // repeated .io.prometheus.client.Metric metric = 4;
+  total_size += 1 * this->metric_size();
+  for (int i = 0; i < this->metric_size(); i++) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSizeNoVirtual(
+        this->metric(i));
+  }
+
+  if (!unknown_fields().empty()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        unknown_fields());
+  }
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = total_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void MetricFamily::MergeFrom(const ::google::protobuf::Message& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  const MetricFamily* source =
+    ::google::protobuf::internal::dynamic_cast_if_available<const MetricFamily*>(
+      &from);
+  if (source == NULL) {
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+    MergeFrom(*source);
+  }
+}
+
+void MetricFamily::MergeFrom(const MetricFamily& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  metric_.MergeFrom(from.metric_);
+  if (from._has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    if (from.has_name()) {
+      set_name(from.name());
+    }
+    if (from.has_help()) {
+      set_help(from.help());
+    }
+    if (from.has_type()) {
+      set_type(from.type());
+    }
+  }
+  mutable_unknown_fields()->MergeFrom(from.unknown_fields());
+}
+
+void MetricFamily::CopyFrom(const ::google::protobuf::Message& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void MetricFamily::CopyFrom(const MetricFamily& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool MetricFamily::IsInitialized() const {
+
+  return true;
+}
+
+void MetricFamily::Swap(MetricFamily* other) {
+  if (other != this) {
+    std::swap(name_, other->name_);
+    std::swap(help_, other->help_);
+    std::swap(type_, other->type_);
+    metric_.Swap(&other->metric_);
+    std::swap(_has_bits_[0], other->_has_bits_[0]);
+    _unknown_fields_.Swap(&other->_unknown_fields_);
+    std::swap(_cached_size_, other->_cached_size_);
+  }
+}
+
+::google::protobuf::Metadata MetricFamily::GetMetadata() const {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::Metadata metadata;
+  metadata.descriptor = MetricFamily_descriptor_;
+  metadata.reflection = MetricFamily_reflection_;
+  return metadata;
+}
+
+
+// @@protoc_insertion_point(namespace_scope)
+
+}  // namespace client
+}  // namespace prometheus
+}  // namespace io
+
+// @@protoc_insertion_point(global_scope)
diff --git a/vendor/github.com/prometheus/client_model/cpp/metrics.pb.h b/vendor/github.com/prometheus/client_model/cpp/metrics.pb.h
new file mode 100644
index 000000000..206ba3704
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/cpp/metrics.pb.h
@@ -0,0 +1,2072 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: metrics.proto
+
+#ifndef PROTOBUF_metrics_2eproto__INCLUDED
+#define PROTOBUF_metrics_2eproto__INCLUDED
+
+#include <string>
+
+#include <google/protobuf/stubs/common.h>
+
+#if GOOGLE_PROTOBUF_VERSION < 2006000
+#error This file was generated by a newer version of protoc which is
+#error incompatible with your Protocol Buffer headers.  Please update
+#error your headers.
+#endif
+#if 2006001 < GOOGLE_PROTOBUF_MIN_PROTOC_VERSION
+#error This file was generated by an older version of protoc which is
+#error incompatible with your Protocol Buffer headers.  Please
+#error regenerate this file with a newer version of protoc.
+#endif
+
+#include <google/protobuf/generated_message_util.h>
+#include <google/protobuf/message.h>
+#include <google/protobuf/repeated_field.h>
+#include <google/protobuf/extension_set.h>
+#include <google/protobuf/generated_enum_reflection.h>
+#include <google/protobuf/unknown_field_set.h>
+// @@protoc_insertion_point(includes)
+
+namespace io {
+namespace prometheus {
+namespace client {
+
+// Internal implementation detail -- do not call these.
+void  protobuf_AddDesc_metrics_2eproto();
+void protobuf_AssignDesc_metrics_2eproto();
+void protobuf_ShutdownFile_metrics_2eproto();
+
+class LabelPair;
+class Gauge;
+class Counter;
+class Quantile;
+class Summary;
+class Untyped;
+class Histogram;
+class Bucket;
+class Metric;
+class MetricFamily;
+
+enum MetricType {
+  COUNTER = 0,
+  GAUGE = 1,
+  SUMMARY = 2,
+  UNTYPED = 3,
+  HISTOGRAM = 4
+};
+bool MetricType_IsValid(int value);
+const MetricType MetricType_MIN = COUNTER;
+const MetricType MetricType_MAX = HISTOGRAM;
+const int MetricType_ARRAYSIZE = MetricType_MAX + 1;
+
+const ::google::protobuf::EnumDescriptor* MetricType_descriptor();
+inline const ::std::string& MetricType_Name(MetricType value) {
+  return ::google::protobuf::internal::NameOfEnum(
+    MetricType_descriptor(), value);
+}
+inline bool MetricType_Parse(
+    const ::std::string& name, MetricType* value) {
+  return ::google::protobuf::internal::ParseNamedEnum<MetricType>(
+    MetricType_descriptor(), name, value);
+}
+// ===================================================================
+
+class LabelPair : public ::google::protobuf::Message {
+ public:
+  LabelPair();
+  virtual ~LabelPair();
+
+  LabelPair(const LabelPair& from);
+
+  inline LabelPair& operator=(const LabelPair& from) {
+    CopyFrom(from);
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _unknown_fields_;
+  }
+
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return &_unknown_fields_;
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor();
+  static const LabelPair& default_instance();
+
+  void Swap(LabelPair* other);
+
+  // implements Message ----------------------------------------------
+
+  LabelPair* New() const;
+  void CopyFrom(const ::google::protobuf::Message& from);
+  void MergeFrom(const ::google::protobuf::Message& from);
+  void CopyFrom(const LabelPair& from);
+  void MergeFrom(const LabelPair& from);
+  void Clear();
+  bool IsInitialized() const;
+
+  int ByteSize() const;
+  bool MergePartialFromCodedStream(
+      ::google::protobuf::io::CodedInputStream* input);
+  void SerializeWithCachedSizes(
+      ::google::protobuf::io::CodedOutputStream* output) const;
+  ::google::protobuf::uint8* SerializeWithCachedSizesToArray(::google::protobuf::uint8* output) const;
+  int GetCachedSize() const { return _cached_size_; }
+  private:
+  void SharedCtor();
+  void SharedDtor();
+  void SetCachedSize(int size) const;
+  public:
+  ::google::protobuf::Metadata GetMetadata() const;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // optional string name = 1;
+  inline bool has_name() const;
+  inline void clear_name();
+  static const int kNameFieldNumber = 1;
+  inline const ::std::string& name() const;
+  inline void set_name(const ::std::string& value);
+  inline void set_name(const char* value);
+  inline void set_name(const char* value, size_t size);
+  inline ::std::string* mutable_name();
+  inline ::std::string* release_name();
+  inline void set_allocated_name(::std::string* name);
+
+  // optional string value = 2;
+  inline bool has_value() const;
+  inline void clear_value();
+  static const int kValueFieldNumber = 2;
+  inline const ::std::string& value() const;
+  inline void set_value(const ::std::string& value);
+  inline void set_value(const char* value);
+  inline void set_value(const char* value, size_t size);
+  inline ::std::string* mutable_value();
+  inline ::std::string* release_value();
+  inline void set_allocated_value(::std::string* value);
+
+  // @@protoc_insertion_point(class_scope:io.prometheus.client.LabelPair)
+ private:
+  inline void set_has_name();
+  inline void clear_has_name();
+  inline void set_has_value();
+  inline void clear_has_value();
+
+  ::google::protobuf::UnknownFieldSet _unknown_fields_;
+
+  ::google::protobuf::uint32 _has_bits_[1];
+  mutable int _cached_size_;
+  ::std::string* name_;
+  ::std::string* value_;
+  friend void  protobuf_AddDesc_metrics_2eproto();
+  friend void protobuf_AssignDesc_metrics_2eproto();
+  friend void protobuf_ShutdownFile_metrics_2eproto();
+
+  void InitAsDefaultInstance();
+  static LabelPair* default_instance_;
+};
+// -------------------------------------------------------------------
+
+class Gauge : public ::google::protobuf::Message {
+ public:
+  Gauge();
+  virtual ~Gauge();
+
+  Gauge(const Gauge& from);
+
+  inline Gauge& operator=(const Gauge& from) {
+    CopyFrom(from);
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _unknown_fields_;
+  }
+
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return &_unknown_fields_;
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor();
+  static const Gauge& default_instance();
+
+  void Swap(Gauge* other);
+
+  // implements Message ----------------------------------------------
+
+  Gauge* New() const;
+  void CopyFrom(const ::google::protobuf::Message& from);
+  void MergeFrom(const ::google::protobuf::Message& from);
+  void CopyFrom(const Gauge& from);
+  void MergeFrom(const Gauge& from);
+  void Clear();
+  bool IsInitialized() const;
+
+  int ByteSize() const;
+  bool MergePartialFromCodedStream(
+      ::google::protobuf::io::CodedInputStream* input);
+  void SerializeWithCachedSizes(
+      ::google::protobuf::io::CodedOutputStream* output) const;
+  ::google::protobuf::uint8* SerializeWithCachedSizesToArray(::google::protobuf::uint8* output) const;
+  int GetCachedSize() const { return _cached_size_; }
+  private:
+  void SharedCtor();
+  void SharedDtor();
+  void SetCachedSize(int size) const;
+  public:
+  ::google::protobuf::Metadata GetMetadata() const;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // optional double value = 1;
+  inline bool has_value() const;
+  inline void clear_value();
+  static const int kValueFieldNumber = 1;
+  inline double value() const;
+  inline void set_value(double value);
+
+  // @@protoc_insertion_point(class_scope:io.prometheus.client.Gauge)
+ private:
+  inline void set_has_value();
+  inline void clear_has_value();
+
+  ::google::protobuf::UnknownFieldSet _unknown_fields_;
+
+  ::google::protobuf::uint32 _has_bits_[1];
+  mutable int _cached_size_;
+  double value_;
+  friend void  protobuf_AddDesc_metrics_2eproto();
+  friend void protobuf_AssignDesc_metrics_2eproto();
+  friend void protobuf_ShutdownFile_metrics_2eproto();
+
+  void InitAsDefaultInstance();
+  static Gauge* default_instance_;
+};
+// -------------------------------------------------------------------
+
+class Counter : public ::google::protobuf::Message {
+ public:
+  Counter();
+  virtual ~Counter();
+
+  Counter(const Counter& from);
+
+  inline Counter& operator=(const Counter& from) {
+    CopyFrom(from);
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _unknown_fields_;
+  }
+
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return &_unknown_fields_;
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor();
+  static const Counter& default_instance();
+
+  void Swap(Counter* other);
+
+  // implements Message ----------------------------------------------
+
+  Counter* New() const;
+  void CopyFrom(const ::google::protobuf::Message& from);
+  void MergeFrom(const ::google::protobuf::Message& from);
+  void CopyFrom(const Counter& from);
+  void MergeFrom(const Counter& from);
+  void Clear();
+  bool IsInitialized() const;
+
+  int ByteSize() const;
+  bool MergePartialFromCodedStream(
+      ::google::protobuf::io::CodedInputStream* input);
+  void SerializeWithCachedSizes(
+      ::google::protobuf::io::CodedOutputStream* output) const;
+  ::google::protobuf::uint8* SerializeWithCachedSizesToArray(::google::protobuf::uint8* output) const;
+  int GetCachedSize() const { return _cached_size_; }
+  private:
+  void SharedCtor();
+  void SharedDtor();
+  void SetCachedSize(int size) const;
+  public:
+  ::google::protobuf::Metadata GetMetadata() const;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // optional double value = 1;
+  inline bool has_value() const;
+  inline void clear_value();
+  static const int kValueFieldNumber = 1;
+  inline double value() const;
+  inline void set_value(double value);
+
+  // @@protoc_insertion_point(class_scope:io.prometheus.client.Counter)
+ private:
+  inline void set_has_value();
+  inline void clear_has_value();
+
+  ::google::protobuf::UnknownFieldSet _unknown_fields_;
+
+  ::google::protobuf::uint32 _has_bits_[1];
+  mutable int _cached_size_;
+  double value_;
+  friend void  protobuf_AddDesc_metrics_2eproto();
+  friend void protobuf_AssignDesc_metrics_2eproto();
+  friend void protobuf_ShutdownFile_metrics_2eproto();
+
+  void InitAsDefaultInstance();
+  static Counter* default_instance_;
+};
+// -------------------------------------------------------------------
+
+class Quantile : public ::google::protobuf::Message {
+ public:
+  Quantile();
+  virtual ~Quantile();
+
+  Quantile(const Quantile& from);
+
+  inline Quantile& operator=(const Quantile& from) {
+    CopyFrom(from);
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _unknown_fields_;
+  }
+
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return &_unknown_fields_;
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor();
+  static const Quantile& default_instance();
+
+  void Swap(Quantile* other);
+
+  // implements Message ----------------------------------------------
+
+  Quantile* New() const;
+  void CopyFrom(const ::google::protobuf::Message& from);
+  void MergeFrom(const ::google::protobuf::Message& from);
+  void CopyFrom(const Quantile& from);
+  void MergeFrom(const Quantile& from);
+  void Clear();
+  bool IsInitialized() const;
+
+  int ByteSize() const;
+  bool MergePartialFromCodedStream(
+      ::google::protobuf::io::CodedInputStream* input);
+  void SerializeWithCachedSizes(
+      ::google::protobuf::io::CodedOutputStream* output) const;
+  ::google::protobuf::uint8* SerializeWithCachedSizesToArray(::google::protobuf::uint8* output) const;
+  int GetCachedSize() const { return _cached_size_; }
+  private:
+  void SharedCtor();
+  void SharedDtor();
+  void SetCachedSize(int size) const;
+  public:
+  ::google::protobuf::Metadata GetMetadata() const;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // optional double quantile = 1;
+  inline bool has_quantile() const;
+  inline void clear_quantile();
+  static const int kQuantileFieldNumber = 1;
+  inline double quantile() const;
+  inline void set_quantile(double value);
+
+  // optional double value = 2;
+  inline bool has_value() const;
+  inline void clear_value();
+  static const int kValueFieldNumber = 2;
+  inline double value() const;
+  inline void set_value(double value);
+
+  // @@protoc_insertion_point(class_scope:io.prometheus.client.Quantile)
+ private:
+  inline void set_has_quantile();
+  inline void clear_has_quantile();
+  inline void set_has_value();
+  inline void clear_has_value();
+
+  ::google::protobuf::UnknownFieldSet _unknown_fields_;
+
+  ::google::protobuf::uint32 _has_bits_[1];
+  mutable int _cached_size_;
+  double quantile_;
+  double value_;
+  friend void  protobuf_AddDesc_metrics_2eproto();
+  friend void protobuf_AssignDesc_metrics_2eproto();
+  friend void protobuf_ShutdownFile_metrics_2eproto();
+
+  void InitAsDefaultInstance();
+  static Quantile* default_instance_;
+};
+// -------------------------------------------------------------------
+
+class Summary : public ::google::protobuf::Message {
+ public:
+  Summary();
+  virtual ~Summary();
+
+  Summary(const Summary& from);
+
+  inline Summary& operator=(const Summary& from) {
+    CopyFrom(from);
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _unknown_fields_;
+  }
+
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return &_unknown_fields_;
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor();
+  static const Summary& default_instance();
+
+  void Swap(Summary* other);
+
+  // implements Message ----------------------------------------------
+
+  Summary* New() const;
+  void CopyFrom(const ::google::protobuf::Message& from);
+  void MergeFrom(const ::google::protobuf::Message& from);
+  void CopyFrom(const Summary& from);
+  void MergeFrom(const Summary& from);
+  void Clear();
+  bool IsInitialized() const;
+
+  int ByteSize() const;
+  bool MergePartialFromCodedStream(
+      ::google::protobuf::io::CodedInputStream* input);
+  void SerializeWithCachedSizes(
+      ::google::protobuf::io::CodedOutputStream* output) const;
+  ::google::protobuf::uint8* SerializeWithCachedSizesToArray(::google::protobuf::uint8* output) const;
+  int GetCachedSize() const { return _cached_size_; }
+  private:
+  void SharedCtor();
+  void SharedDtor();
+  void SetCachedSize(int size) const;
+  public:
+  ::google::protobuf::Metadata GetMetadata() const;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // optional uint64 sample_count = 1;
+  inline bool has_sample_count() const;
+  inline void clear_sample_count();
+  static const int kSampleCountFieldNumber = 1;
+  inline ::google::protobuf::uint64 sample_count() const;
+  inline void set_sample_count(::google::protobuf::uint64 value);
+
+  // optional double sample_sum = 2;
+  inline bool has_sample_sum() const;
+  inline void clear_sample_sum();
+  static const int kSampleSumFieldNumber = 2;
+  inline double sample_sum() const;
+  inline void set_sample_sum(double value);
+
+  // repeated .io.prometheus.client.Quantile quantile = 3;
+  inline int quantile_size() const;
+  inline void clear_quantile();
+  static const int kQuantileFieldNumber = 3;
+  inline const ::io::prometheus::client::Quantile& quantile(int index) const;
+  inline ::io::prometheus::client::Quantile* mutable_quantile(int index);
+  inline ::io::prometheus::client::Quantile* add_quantile();
+  inline const ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Quantile >&
+      quantile() const;
+  inline ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Quantile >*
+      mutable_quantile();
+
+  // @@protoc_insertion_point(class_scope:io.prometheus.client.Summary)
+ private:
+  inline void set_has_sample_count();
+  inline void clear_has_sample_count();
+  inline void set_has_sample_sum();
+  inline void clear_has_sample_sum();
+
+  ::google::protobuf::UnknownFieldSet _unknown_fields_;
+
+  ::google::protobuf::uint32 _has_bits_[1];
+  mutable int _cached_size_;
+  ::google::protobuf::uint64 sample_count_;
+  double sample_sum_;
+  ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Quantile > quantile_;
+  friend void  protobuf_AddDesc_metrics_2eproto();
+  friend void protobuf_AssignDesc_metrics_2eproto();
+  friend void protobuf_ShutdownFile_metrics_2eproto();
+
+  void InitAsDefaultInstance();
+  static Summary* default_instance_;
+};
+// -------------------------------------------------------------------
+
+class Untyped : public ::google::protobuf::Message {
+ public:
+  Untyped();
+  virtual ~Untyped();
+
+  Untyped(const Untyped& from);
+
+  inline Untyped& operator=(const Untyped& from) {
+    CopyFrom(from);
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _unknown_fields_;
+  }
+
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return &_unknown_fields_;
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor();
+  static const Untyped& default_instance();
+
+  void Swap(Untyped* other);
+
+  // implements Message ----------------------------------------------
+
+  Untyped* New() const;
+  void CopyFrom(const ::google::protobuf::Message& from);
+  void MergeFrom(const ::google::protobuf::Message& from);
+  void CopyFrom(const Untyped& from);
+  void MergeFrom(const Untyped& from);
+  void Clear();
+  bool IsInitialized() const;
+
+  int ByteSize() const;
+  bool MergePartialFromCodedStream(
+      ::google::protobuf::io::CodedInputStream* input);
+  void SerializeWithCachedSizes(
+      ::google::protobuf::io::CodedOutputStream* output) const;
+  ::google::protobuf::uint8* SerializeWithCachedSizesToArray(::google::protobuf::uint8* output) const;
+  int GetCachedSize() const { return _cached_size_; }
+  private:
+  void SharedCtor();
+  void SharedDtor();
+  void SetCachedSize(int size) const;
+  public:
+  ::google::protobuf::Metadata GetMetadata() const;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // optional double value = 1;
+  inline bool has_value() const;
+  inline void clear_value();
+  static const int kValueFieldNumber = 1;
+  inline double value() const;
+  inline void set_value(double value);
+
+  // @@protoc_insertion_point(class_scope:io.prometheus.client.Untyped)
+ private:
+  inline void set_has_value();
+  inline void clear_has_value();
+
+  ::google::protobuf::UnknownFieldSet _unknown_fields_;
+
+  ::google::protobuf::uint32 _has_bits_[1];
+  mutable int _cached_size_;
+  double value_;
+  friend void  protobuf_AddDesc_metrics_2eproto();
+  friend void protobuf_AssignDesc_metrics_2eproto();
+  friend void protobuf_ShutdownFile_metrics_2eproto();
+
+  void InitAsDefaultInstance();
+  static Untyped* default_instance_;
+};
+// -------------------------------------------------------------------
+
+class Histogram : public ::google::protobuf::Message {
+ public:
+  Histogram();
+  virtual ~Histogram();
+
+  Histogram(const Histogram& from);
+
+  inline Histogram& operator=(const Histogram& from) {
+    CopyFrom(from);
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _unknown_fields_;
+  }
+
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return &_unknown_fields_;
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor();
+  static const Histogram& default_instance();
+
+  void Swap(Histogram* other);
+
+  // implements Message ----------------------------------------------
+
+  Histogram* New() const;
+  void CopyFrom(const ::google::protobuf::Message& from);
+  void MergeFrom(const ::google::protobuf::Message& from);
+  void CopyFrom(const Histogram& from);
+  void MergeFrom(const Histogram& from);
+  void Clear();
+  bool IsInitialized() const;
+
+  int ByteSize() const;
+  bool MergePartialFromCodedStream(
+      ::google::protobuf::io::CodedInputStream* input);
+  void SerializeWithCachedSizes(
+      ::google::protobuf::io::CodedOutputStream* output) const;
+  ::google::protobuf::uint8* SerializeWithCachedSizesToArray(::google::protobuf::uint8* output) const;
+  int GetCachedSize() const { return _cached_size_; }
+  private:
+  void SharedCtor();
+  void SharedDtor();
+  void SetCachedSize(int size) const;
+  public:
+  ::google::protobuf::Metadata GetMetadata() const;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // optional uint64 sample_count = 1;
+  inline bool has_sample_count() const;
+  inline void clear_sample_count();
+  static const int kSampleCountFieldNumber = 1;
+  inline ::google::protobuf::uint64 sample_count() const;
+  inline void set_sample_count(::google::protobuf::uint64 value);
+
+  // optional double sample_sum = 2;
+  inline bool has_sample_sum() const;
+  inline void clear_sample_sum();
+  static const int kSampleSumFieldNumber = 2;
+  inline double sample_sum() const;
+  inline void set_sample_sum(double value);
+
+  // repeated .io.prometheus.client.Bucket bucket = 3;
+  inline int bucket_size() const;
+  inline void clear_bucket();
+  static const int kBucketFieldNumber = 3;
+  inline const ::io::prometheus::client::Bucket& bucket(int index) const;
+  inline ::io::prometheus::client::Bucket* mutable_bucket(int index);
+  inline ::io::prometheus::client::Bucket* add_bucket();
+  inline const ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Bucket >&
+      bucket() const;
+  inline ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Bucket >*
+      mutable_bucket();
+
+  // @@protoc_insertion_point(class_scope:io.prometheus.client.Histogram)
+ private:
+  inline void set_has_sample_count();
+  inline void clear_has_sample_count();
+  inline void set_has_sample_sum();
+  inline void clear_has_sample_sum();
+
+  ::google::protobuf::UnknownFieldSet _unknown_fields_;
+
+  ::google::protobuf::uint32 _has_bits_[1];
+  mutable int _cached_size_;
+  ::google::protobuf::uint64 sample_count_;
+  double sample_sum_;
+  ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Bucket > bucket_;
+  friend void  protobuf_AddDesc_metrics_2eproto();
+  friend void protobuf_AssignDesc_metrics_2eproto();
+  friend void protobuf_ShutdownFile_metrics_2eproto();
+
+  void InitAsDefaultInstance();
+  static Histogram* default_instance_;
+};
+// -------------------------------------------------------------------
+
+class Bucket : public ::google::protobuf::Message {
+ public:
+  Bucket();
+  virtual ~Bucket();
+
+  Bucket(const Bucket& from);
+
+  inline Bucket& operator=(const Bucket& from) {
+    CopyFrom(from);
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _unknown_fields_;
+  }
+
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return &_unknown_fields_;
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor();
+  static const Bucket& default_instance();
+
+  void Swap(Bucket* other);
+
+  // implements Message ----------------------------------------------
+
+  Bucket* New() const;
+  void CopyFrom(const ::google::protobuf::Message& from);
+  void MergeFrom(const ::google::protobuf::Message& from);
+  void CopyFrom(const Bucket& from);
+  void MergeFrom(const Bucket& from);
+  void Clear();
+  bool IsInitialized() const;
+
+  int ByteSize() const;
+  bool MergePartialFromCodedStream(
+      ::google::protobuf::io::CodedInputStream* input);
+  void SerializeWithCachedSizes(
+      ::google::protobuf::io::CodedOutputStream* output) const;
+  ::google::protobuf::uint8* SerializeWithCachedSizesToArray(::google::protobuf::uint8* output) const;
+  int GetCachedSize() const { return _cached_size_; }
+  private:
+  void SharedCtor();
+  void SharedDtor();
+  void SetCachedSize(int size) const;
+  public:
+  ::google::protobuf::Metadata GetMetadata() const;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // optional uint64 cumulative_count = 1;
+  inline bool has_cumulative_count() const;
+  inline void clear_cumulative_count();
+  static const int kCumulativeCountFieldNumber = 1;
+  inline ::google::protobuf::uint64 cumulative_count() const;
+  inline void set_cumulative_count(::google::protobuf::uint64 value);
+
+  // optional double upper_bound = 2;
+  inline bool has_upper_bound() const;
+  inline void clear_upper_bound();
+  static const int kUpperBoundFieldNumber = 2;
+  inline double upper_bound() const;
+  inline void set_upper_bound(double value);
+
+  // @@protoc_insertion_point(class_scope:io.prometheus.client.Bucket)
+ private:
+  inline void set_has_cumulative_count();
+  inline void clear_has_cumulative_count();
+  inline void set_has_upper_bound();
+  inline void clear_has_upper_bound();
+
+  ::google::protobuf::UnknownFieldSet _unknown_fields_;
+
+  ::google::protobuf::uint32 _has_bits_[1];
+  mutable int _cached_size_;
+  ::google::protobuf::uint64 cumulative_count_;
+  double upper_bound_;
+  friend void  protobuf_AddDesc_metrics_2eproto();
+  friend void protobuf_AssignDesc_metrics_2eproto();
+  friend void protobuf_ShutdownFile_metrics_2eproto();
+
+  void InitAsDefaultInstance();
+  static Bucket* default_instance_;
+};
+// -------------------------------------------------------------------
+
+class Metric : public ::google::protobuf::Message {
+ public:
+  Metric();
+  virtual ~Metric();
+
+  Metric(const Metric& from);
+
+  inline Metric& operator=(const Metric& from) {
+    CopyFrom(from);
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _unknown_fields_;
+  }
+
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return &_unknown_fields_;
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor();
+  static const Metric& default_instance();
+
+  void Swap(Metric* other);
+
+  // implements Message ----------------------------------------------
+
+  Metric* New() const;
+  void CopyFrom(const ::google::protobuf::Message& from);
+  void MergeFrom(const ::google::protobuf::Message& from);
+  void CopyFrom(const Metric& from);
+  void MergeFrom(const Metric& from);
+  void Clear();
+  bool IsInitialized() const;
+
+  int ByteSize() const;
+  bool MergePartialFromCodedStream(
+      ::google::protobuf::io::CodedInputStream* input);
+  void SerializeWithCachedSizes(
+      ::google::protobuf::io::CodedOutputStream* output) const;
+  ::google::protobuf::uint8* SerializeWithCachedSizesToArray(::google::protobuf::uint8* output) const;
+  int GetCachedSize() const { return _cached_size_; }
+  private:
+  void SharedCtor();
+  void SharedDtor();
+  void SetCachedSize(int size) const;
+  public:
+  ::google::protobuf::Metadata GetMetadata() const;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // repeated .io.prometheus.client.LabelPair label = 1;
+  inline int label_size() const;
+  inline void clear_label();
+  static const int kLabelFieldNumber = 1;
+  inline const ::io::prometheus::client::LabelPair& label(int index) const;
+  inline ::io::prometheus::client::LabelPair* mutable_label(int index);
+  inline ::io::prometheus::client::LabelPair* add_label();
+  inline const ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::LabelPair >&
+      label() const;
+  inline ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::LabelPair >*
+      mutable_label();
+
+  // optional .io.prometheus.client.Gauge gauge = 2;
+  inline bool has_gauge() const;
+  inline void clear_gauge();
+  static const int kGaugeFieldNumber = 2;
+  inline const ::io::prometheus::client::Gauge& gauge() const;
+  inline ::io::prometheus::client::Gauge* mutable_gauge();
+  inline ::io::prometheus::client::Gauge* release_gauge();
+  inline void set_allocated_gauge(::io::prometheus::client::Gauge* gauge);
+
+  // optional .io.prometheus.client.Counter counter = 3;
+  inline bool has_counter() const;
+  inline void clear_counter();
+  static const int kCounterFieldNumber = 3;
+  inline const ::io::prometheus::client::Counter& counter() const;
+  inline ::io::prometheus::client::Counter* mutable_counter();
+  inline ::io::prometheus::client::Counter* release_counter();
+  inline void set_allocated_counter(::io::prometheus::client::Counter* counter);
+
+  // optional .io.prometheus.client.Summary summary = 4;
+  inline bool has_summary() const;
+  inline void clear_summary();
+  static const int kSummaryFieldNumber = 4;
+  inline const ::io::prometheus::client::Summary& summary() const;
+  inline ::io::prometheus::client::Summary* mutable_summary();
+  inline ::io::prometheus::client::Summary* release_summary();
+  inline void set_allocated_summary(::io::prometheus::client::Summary* summary);
+
+  // optional .io.prometheus.client.Untyped untyped = 5;
+  inline bool has_untyped() const;
+  inline void clear_untyped();
+  static const int kUntypedFieldNumber = 5;
+  inline const ::io::prometheus::client::Untyped& untyped() const;
+  inline ::io::prometheus::client::Untyped* mutable_untyped();
+  inline ::io::prometheus::client::Untyped* release_untyped();
+  inline void set_allocated_untyped(::io::prometheus::client::Untyped* untyped);
+
+  // optional .io.prometheus.client.Histogram histogram = 7;
+  inline bool has_histogram() const;
+  inline void clear_histogram();
+  static const int kHistogramFieldNumber = 7;
+  inline const ::io::prometheus::client::Histogram& histogram() const;
+  inline ::io::prometheus::client::Histogram* mutable_histogram();
+  inline ::io::prometheus::client::Histogram* release_histogram();
+  inline void set_allocated_histogram(::io::prometheus::client::Histogram* histogram);
+
+  // optional int64 timestamp_ms = 6;
+  inline bool has_timestamp_ms() const;
+  inline void clear_timestamp_ms();
+  static const int kTimestampMsFieldNumber = 6;
+  inline ::google::protobuf::int64 timestamp_ms() const;
+  inline void set_timestamp_ms(::google::protobuf::int64 value);
+
+  // @@protoc_insertion_point(class_scope:io.prometheus.client.Metric)
+ private:
+  inline void set_has_gauge();
+  inline void clear_has_gauge();
+  inline void set_has_counter();
+  inline void clear_has_counter();
+  inline void set_has_summary();
+  inline void clear_has_summary();
+  inline void set_has_untyped();
+  inline void clear_has_untyped();
+  inline void set_has_histogram();
+  inline void clear_has_histogram();
+  inline void set_has_timestamp_ms();
+  inline void clear_has_timestamp_ms();
+
+  ::google::protobuf::UnknownFieldSet _unknown_fields_;
+
+  ::google::protobuf::uint32 _has_bits_[1];
+  mutable int _cached_size_;
+  ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::LabelPair > label_;
+  ::io::prometheus::client::Gauge* gauge_;
+  ::io::prometheus::client::Counter* counter_;
+  ::io::prometheus::client::Summary* summary_;
+  ::io::prometheus::client::Untyped* untyped_;
+  ::io::prometheus::client::Histogram* histogram_;
+  ::google::protobuf::int64 timestamp_ms_;
+  friend void  protobuf_AddDesc_metrics_2eproto();
+  friend void protobuf_AssignDesc_metrics_2eproto();
+  friend void protobuf_ShutdownFile_metrics_2eproto();
+
+  void InitAsDefaultInstance();
+  static Metric* default_instance_;
+};
+// -------------------------------------------------------------------
+
+class MetricFamily : public ::google::protobuf::Message {
+ public:
+  MetricFamily();
+  virtual ~MetricFamily();
+
+  MetricFamily(const MetricFamily& from);
+
+  inline MetricFamily& operator=(const MetricFamily& from) {
+    CopyFrom(from);
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _unknown_fields_;
+  }
+
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return &_unknown_fields_;
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor();
+  static const MetricFamily& default_instance();
+
+  void Swap(MetricFamily* other);
+
+  // implements Message ----------------------------------------------
+
+  MetricFamily* New() const;
+  void CopyFrom(const ::google::protobuf::Message& from);
+  void MergeFrom(const ::google::protobuf::Message& from);
+  void CopyFrom(const MetricFamily& from);
+  void MergeFrom(const MetricFamily& from);
+  void Clear();
+  bool IsInitialized() const;
+
+  int ByteSize() const;
+  bool MergePartialFromCodedStream(
+      ::google::protobuf::io::CodedInputStream* input);
+  void SerializeWithCachedSizes(
+      ::google::protobuf::io::CodedOutputStream* output) const;
+  ::google::protobuf::uint8* SerializeWithCachedSizesToArray(::google::protobuf::uint8* output) const;
+  int GetCachedSize() const { return _cached_size_; }
+  private:
+  void SharedCtor();
+  void SharedDtor();
+  void SetCachedSize(int size) const;
+  public:
+  ::google::protobuf::Metadata GetMetadata() const;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // optional string name = 1;
+  inline bool has_name() const;
+  inline void clear_name();
+  static const int kNameFieldNumber = 1;
+  inline const ::std::string& name() const;
+  inline void set_name(const ::std::string& value);
+  inline void set_name(const char* value);
+  inline void set_name(const char* value, size_t size);
+  inline ::std::string* mutable_name();
+  inline ::std::string* release_name();
+  inline void set_allocated_name(::std::string* name);
+
+  // optional string help = 2;
+  inline bool has_help() const;
+  inline void clear_help();
+  static const int kHelpFieldNumber = 2;
+  inline const ::std::string& help() const;
+  inline void set_help(const ::std::string& value);
+  inline void set_help(const char* value);
+  inline void set_help(const char* value, size_t size);
+  inline ::std::string* mutable_help();
+  inline ::std::string* release_help();
+  inline void set_allocated_help(::std::string* help);
+
+  // optional .io.prometheus.client.MetricType type = 3;
+  inline bool has_type() const;
+  inline void clear_type();
+  static const int kTypeFieldNumber = 3;
+  inline ::io::prometheus::client::MetricType type() const;
+  inline void set_type(::io::prometheus::client::MetricType value);
+
+  // repeated .io.prometheus.client.Metric metric = 4;
+  inline int metric_size() const;
+  inline void clear_metric();
+  static const int kMetricFieldNumber = 4;
+  inline const ::io::prometheus::client::Metric& metric(int index) const;
+  inline ::io::prometheus::client::Metric* mutable_metric(int index);
+  inline ::io::prometheus::client::Metric* add_metric();
+  inline const ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Metric >&
+      metric() const;
+  inline ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Metric >*
+      mutable_metric();
+
+  // @@protoc_insertion_point(class_scope:io.prometheus.client.MetricFamily)
+ private:
+  inline void set_has_name();
+  inline void clear_has_name();
+  inline void set_has_help();
+  inline void clear_has_help();
+  inline void set_has_type();
+  inline void clear_has_type();
+
+  ::google::protobuf::UnknownFieldSet _unknown_fields_;
+
+  ::google::protobuf::uint32 _has_bits_[1];
+  mutable int _cached_size_;
+  ::std::string* name_;
+  ::std::string* help_;
+  ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Metric > metric_;
+  int type_;
+  friend void  protobuf_AddDesc_metrics_2eproto();
+  friend void protobuf_AssignDesc_metrics_2eproto();
+  friend void protobuf_ShutdownFile_metrics_2eproto();
+
+  void InitAsDefaultInstance();
+  static MetricFamily* default_instance_;
+};
+// ===================================================================
+
+
+// ===================================================================
+
+// LabelPair
+
+// optional string name = 1;
+inline bool LabelPair::has_name() const {
+  return (_has_bits_[0] & 0x00000001u) != 0;
+}
+inline void LabelPair::set_has_name() {
+  _has_bits_[0] |= 0x00000001u;
+}
+inline void LabelPair::clear_has_name() {
+  _has_bits_[0] &= ~0x00000001u;
+}
+inline void LabelPair::clear_name() {
+  if (name_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    name_->clear();
+  }
+  clear_has_name();
+}
+inline const ::std::string& LabelPair::name() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.LabelPair.name)
+  return *name_;
+}
+inline void LabelPair::set_name(const ::std::string& value) {
+  set_has_name();
+  if (name_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    name_ = new ::std::string;
+  }
+  name_->assign(value);
+  // @@protoc_insertion_point(field_set:io.prometheus.client.LabelPair.name)
+}
+inline void LabelPair::set_name(const char* value) {
+  set_has_name();
+  if (name_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    name_ = new ::std::string;
+  }
+  name_->assign(value);
+  // @@protoc_insertion_point(field_set_char:io.prometheus.client.LabelPair.name)
+}
+inline void LabelPair::set_name(const char* value, size_t size) {
+  set_has_name();
+  if (name_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    name_ = new ::std::string;
+  }
+  name_->assign(reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_set_pointer:io.prometheus.client.LabelPair.name)
+}
+inline ::std::string* LabelPair::mutable_name() {
+  set_has_name();
+  if (name_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    name_ = new ::std::string;
+  }
+  // @@protoc_insertion_point(field_mutable:io.prometheus.client.LabelPair.name)
+  return name_;
+}
+inline ::std::string* LabelPair::release_name() {
+  clear_has_name();
+  if (name_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    return NULL;
+  } else {
+    ::std::string* temp = name_;
+    name_ = const_cast< ::std::string*>(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+    return temp;
+  }
+}
+inline void LabelPair::set_allocated_name(::std::string* name) {
+  if (name_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    delete name_;
+  }
+  if (name) {
+    set_has_name();
+    name_ = name;
+  } else {
+    clear_has_name();
+    name_ = const_cast< ::std::string*>(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+  }
+  // @@protoc_insertion_point(field_set_allocated:io.prometheus.client.LabelPair.name)
+}
+
+// optional string value = 2;
+inline bool LabelPair::has_value() const {
+  return (_has_bits_[0] & 0x00000002u) != 0;
+}
+inline void LabelPair::set_has_value() {
+  _has_bits_[0] |= 0x00000002u;
+}
+inline void LabelPair::clear_has_value() {
+  _has_bits_[0] &= ~0x00000002u;
+}
+inline void LabelPair::clear_value() {
+  if (value_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    value_->clear();
+  }
+  clear_has_value();
+}
+inline const ::std::string& LabelPair::value() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.LabelPair.value)
+  return *value_;
+}
+inline void LabelPair::set_value(const ::std::string& value) {
+  set_has_value();
+  if (value_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    value_ = new ::std::string;
+  }
+  value_->assign(value);
+  // @@protoc_insertion_point(field_set:io.prometheus.client.LabelPair.value)
+}
+inline void LabelPair::set_value(const char* value) {
+  set_has_value();
+  if (value_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    value_ = new ::std::string;
+  }
+  value_->assign(value);
+  // @@protoc_insertion_point(field_set_char:io.prometheus.client.LabelPair.value)
+}
+inline void LabelPair::set_value(const char* value, size_t size) {
+  set_has_value();
+  if (value_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    value_ = new ::std::string;
+  }
+  value_->assign(reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_set_pointer:io.prometheus.client.LabelPair.value)
+}
+inline ::std::string* LabelPair::mutable_value() {
+  set_has_value();
+  if (value_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    value_ = new ::std::string;
+  }
+  // @@protoc_insertion_point(field_mutable:io.prometheus.client.LabelPair.value)
+  return value_;
+}
+inline ::std::string* LabelPair::release_value() {
+  clear_has_value();
+  if (value_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    return NULL;
+  } else {
+    ::std::string* temp = value_;
+    value_ = const_cast< ::std::string*>(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+    return temp;
+  }
+}
+inline void LabelPair::set_allocated_value(::std::string* value) {
+  if (value_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    delete value_;
+  }
+  if (value) {
+    set_has_value();
+    value_ = value;
+  } else {
+    clear_has_value();
+    value_ = const_cast< ::std::string*>(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+  }
+  // @@protoc_insertion_point(field_set_allocated:io.prometheus.client.LabelPair.value)
+}
+
+// -------------------------------------------------------------------
+
+// Gauge
+
+// optional double value = 1;
+inline bool Gauge::has_value() const {
+  return (_has_bits_[0] & 0x00000001u) != 0;
+}
+inline void Gauge::set_has_value() {
+  _has_bits_[0] |= 0x00000001u;
+}
+inline void Gauge::clear_has_value() {
+  _has_bits_[0] &= ~0x00000001u;
+}
+inline void Gauge::clear_value() {
+  value_ = 0;
+  clear_has_value();
+}
+inline double Gauge::value() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Gauge.value)
+  return value_;
+}
+inline void Gauge::set_value(double value) {
+  set_has_value();
+  value_ = value;
+  // @@protoc_insertion_point(field_set:io.prometheus.client.Gauge.value)
+}
+
+// -------------------------------------------------------------------
+
+// Counter
+
+// optional double value = 1;
+inline bool Counter::has_value() const {
+  return (_has_bits_[0] & 0x00000001u) != 0;
+}
+inline void Counter::set_has_value() {
+  _has_bits_[0] |= 0x00000001u;
+}
+inline void Counter::clear_has_value() {
+  _has_bits_[0] &= ~0x00000001u;
+}
+inline void Counter::clear_value() {
+  value_ = 0;
+  clear_has_value();
+}
+inline double Counter::value() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Counter.value)
+  return value_;
+}
+inline void Counter::set_value(double value) {
+  set_has_value();
+  value_ = value;
+  // @@protoc_insertion_point(field_set:io.prometheus.client.Counter.value)
+}
+
+// -------------------------------------------------------------------
+
+// Quantile
+
+// optional double quantile = 1;
+inline bool Quantile::has_quantile() const {
+  return (_has_bits_[0] & 0x00000001u) != 0;
+}
+inline void Quantile::set_has_quantile() {
+  _has_bits_[0] |= 0x00000001u;
+}
+inline void Quantile::clear_has_quantile() {
+  _has_bits_[0] &= ~0x00000001u;
+}
+inline void Quantile::clear_quantile() {
+  quantile_ = 0;
+  clear_has_quantile();
+}
+inline double Quantile::quantile() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Quantile.quantile)
+  return quantile_;
+}
+inline void Quantile::set_quantile(double value) {
+  set_has_quantile();
+  quantile_ = value;
+  // @@protoc_insertion_point(field_set:io.prometheus.client.Quantile.quantile)
+}
+
+// optional double value = 2;
+inline bool Quantile::has_value() const {
+  return (_has_bits_[0] & 0x00000002u) != 0;
+}
+inline void Quantile::set_has_value() {
+  _has_bits_[0] |= 0x00000002u;
+}
+inline void Quantile::clear_has_value() {
+  _has_bits_[0] &= ~0x00000002u;
+}
+inline void Quantile::clear_value() {
+  value_ = 0;
+  clear_has_value();
+}
+inline double Quantile::value() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Quantile.value)
+  return value_;
+}
+inline void Quantile::set_value(double value) {
+  set_has_value();
+  value_ = value;
+  // @@protoc_insertion_point(field_set:io.prometheus.client.Quantile.value)
+}
+
+// -------------------------------------------------------------------
+
+// Summary
+
+// optional uint64 sample_count = 1;
+inline bool Summary::has_sample_count() const {
+  return (_has_bits_[0] & 0x00000001u) != 0;
+}
+inline void Summary::set_has_sample_count() {
+  _has_bits_[0] |= 0x00000001u;
+}
+inline void Summary::clear_has_sample_count() {
+  _has_bits_[0] &= ~0x00000001u;
+}
+inline void Summary::clear_sample_count() {
+  sample_count_ = GOOGLE_ULONGLONG(0);
+  clear_has_sample_count();
+}
+inline ::google::protobuf::uint64 Summary::sample_count() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Summary.sample_count)
+  return sample_count_;
+}
+inline void Summary::set_sample_count(::google::protobuf::uint64 value) {
+  set_has_sample_count();
+  sample_count_ = value;
+  // @@protoc_insertion_point(field_set:io.prometheus.client.Summary.sample_count)
+}
+
+// optional double sample_sum = 2;
+inline bool Summary::has_sample_sum() const {
+  return (_has_bits_[0] & 0x00000002u) != 0;
+}
+inline void Summary::set_has_sample_sum() {
+  _has_bits_[0] |= 0x00000002u;
+}
+inline void Summary::clear_has_sample_sum() {
+  _has_bits_[0] &= ~0x00000002u;
+}
+inline void Summary::clear_sample_sum() {
+  sample_sum_ = 0;
+  clear_has_sample_sum();
+}
+inline double Summary::sample_sum() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Summary.sample_sum)
+  return sample_sum_;
+}
+inline void Summary::set_sample_sum(double value) {
+  set_has_sample_sum();
+  sample_sum_ = value;
+  // @@protoc_insertion_point(field_set:io.prometheus.client.Summary.sample_sum)
+}
+
+// repeated .io.prometheus.client.Quantile quantile = 3;
+inline int Summary::quantile_size() const {
+  return quantile_.size();
+}
+inline void Summary::clear_quantile() {
+  quantile_.Clear();
+}
+inline const ::io::prometheus::client::Quantile& Summary::quantile(int index) const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Summary.quantile)
+  return quantile_.Get(index);
+}
+inline ::io::prometheus::client::Quantile* Summary::mutable_quantile(int index) {
+  // @@protoc_insertion_point(field_mutable:io.prometheus.client.Summary.quantile)
+  return quantile_.Mutable(index);
+}
+inline ::io::prometheus::client::Quantile* Summary::add_quantile() {
+  // @@protoc_insertion_point(field_add:io.prometheus.client.Summary.quantile)
+  return quantile_.Add();
+}
+inline const ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Quantile >&
+Summary::quantile() const {
+  // @@protoc_insertion_point(field_list:io.prometheus.client.Summary.quantile)
+  return quantile_;
+}
+inline ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Quantile >*
+Summary::mutable_quantile() {
+  // @@protoc_insertion_point(field_mutable_list:io.prometheus.client.Summary.quantile)
+  return &quantile_;
+}
+
+// -------------------------------------------------------------------
+
+// Untyped
+
+// optional double value = 1;
+inline bool Untyped::has_value() const {
+  return (_has_bits_[0] & 0x00000001u) != 0;
+}
+inline void Untyped::set_has_value() {
+  _has_bits_[0] |= 0x00000001u;
+}
+inline void Untyped::clear_has_value() {
+  _has_bits_[0] &= ~0x00000001u;
+}
+inline void Untyped::clear_value() {
+  value_ = 0;
+  clear_has_value();
+}
+inline double Untyped::value() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Untyped.value)
+  return value_;
+}
+inline void Untyped::set_value(double value) {
+  set_has_value();
+  value_ = value;
+  // @@protoc_insertion_point(field_set:io.prometheus.client.Untyped.value)
+}
+
+// -------------------------------------------------------------------
+
+// Histogram
+
+// optional uint64 sample_count = 1;
+inline bool Histogram::has_sample_count() const {
+  return (_has_bits_[0] & 0x00000001u) != 0;
+}
+inline void Histogram::set_has_sample_count() {
+  _has_bits_[0] |= 0x00000001u;
+}
+inline void Histogram::clear_has_sample_count() {
+  _has_bits_[0] &= ~0x00000001u;
+}
+inline void Histogram::clear_sample_count() {
+  sample_count_ = GOOGLE_ULONGLONG(0);
+  clear_has_sample_count();
+}
+inline ::google::protobuf::uint64 Histogram::sample_count() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Histogram.sample_count)
+  return sample_count_;
+}
+inline void Histogram::set_sample_count(::google::protobuf::uint64 value) {
+  set_has_sample_count();
+  sample_count_ = value;
+  // @@protoc_insertion_point(field_set:io.prometheus.client.Histogram.sample_count)
+}
+
+// optional double sample_sum = 2;
+inline bool Histogram::has_sample_sum() const {
+  return (_has_bits_[0] & 0x00000002u) != 0;
+}
+inline void Histogram::set_has_sample_sum() {
+  _has_bits_[0] |= 0x00000002u;
+}
+inline void Histogram::clear_has_sample_sum() {
+  _has_bits_[0] &= ~0x00000002u;
+}
+inline void Histogram::clear_sample_sum() {
+  sample_sum_ = 0;
+  clear_has_sample_sum();
+}
+inline double Histogram::sample_sum() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Histogram.sample_sum)
+  return sample_sum_;
+}
+inline void Histogram::set_sample_sum(double value) {
+  set_has_sample_sum();
+  sample_sum_ = value;
+  // @@protoc_insertion_point(field_set:io.prometheus.client.Histogram.sample_sum)
+}
+
+// repeated .io.prometheus.client.Bucket bucket = 3;
+inline int Histogram::bucket_size() const {
+  return bucket_.size();
+}
+inline void Histogram::clear_bucket() {
+  bucket_.Clear();
+}
+inline const ::io::prometheus::client::Bucket& Histogram::bucket(int index) const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Histogram.bucket)
+  return bucket_.Get(index);
+}
+inline ::io::prometheus::client::Bucket* Histogram::mutable_bucket(int index) {
+  // @@protoc_insertion_point(field_mutable:io.prometheus.client.Histogram.bucket)
+  return bucket_.Mutable(index);
+}
+inline ::io::prometheus::client::Bucket* Histogram::add_bucket() {
+  // @@protoc_insertion_point(field_add:io.prometheus.client.Histogram.bucket)
+  return bucket_.Add();
+}
+inline const ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Bucket >&
+Histogram::bucket() const {
+  // @@protoc_insertion_point(field_list:io.prometheus.client.Histogram.bucket)
+  return bucket_;
+}
+inline ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Bucket >*
+Histogram::mutable_bucket() {
+  // @@protoc_insertion_point(field_mutable_list:io.prometheus.client.Histogram.bucket)
+  return &bucket_;
+}
+
+// -------------------------------------------------------------------
+
+// Bucket
+
+// optional uint64 cumulative_count = 1;
+inline bool Bucket::has_cumulative_count() const {
+  return (_has_bits_[0] & 0x00000001u) != 0;
+}
+inline void Bucket::set_has_cumulative_count() {
+  _has_bits_[0] |= 0x00000001u;
+}
+inline void Bucket::clear_has_cumulative_count() {
+  _has_bits_[0] &= ~0x00000001u;
+}
+inline void Bucket::clear_cumulative_count() {
+  cumulative_count_ = GOOGLE_ULONGLONG(0);
+  clear_has_cumulative_count();
+}
+inline ::google::protobuf::uint64 Bucket::cumulative_count() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Bucket.cumulative_count)
+  return cumulative_count_;
+}
+inline void Bucket::set_cumulative_count(::google::protobuf::uint64 value) {
+  set_has_cumulative_count();
+  cumulative_count_ = value;
+  // @@protoc_insertion_point(field_set:io.prometheus.client.Bucket.cumulative_count)
+}
+
+// optional double upper_bound = 2;
+inline bool Bucket::has_upper_bound() const {
+  return (_has_bits_[0] & 0x00000002u) != 0;
+}
+inline void Bucket::set_has_upper_bound() {
+  _has_bits_[0] |= 0x00000002u;
+}
+inline void Bucket::clear_has_upper_bound() {
+  _has_bits_[0] &= ~0x00000002u;
+}
+inline void Bucket::clear_upper_bound() {
+  upper_bound_ = 0;
+  clear_has_upper_bound();
+}
+inline double Bucket::upper_bound() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Bucket.upper_bound)
+  return upper_bound_;
+}
+inline void Bucket::set_upper_bound(double value) {
+  set_has_upper_bound();
+  upper_bound_ = value;
+  // @@protoc_insertion_point(field_set:io.prometheus.client.Bucket.upper_bound)
+}
+
+// -------------------------------------------------------------------
+
+// Metric
+
+// repeated .io.prometheus.client.LabelPair label = 1;
+inline int Metric::label_size() const {
+  return label_.size();
+}
+inline void Metric::clear_label() {
+  label_.Clear();
+}
+inline const ::io::prometheus::client::LabelPair& Metric::label(int index) const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Metric.label)
+  return label_.Get(index);
+}
+inline ::io::prometheus::client::LabelPair* Metric::mutable_label(int index) {
+  // @@protoc_insertion_point(field_mutable:io.prometheus.client.Metric.label)
+  return label_.Mutable(index);
+}
+inline ::io::prometheus::client::LabelPair* Metric::add_label() {
+  // @@protoc_insertion_point(field_add:io.prometheus.client.Metric.label)
+  return label_.Add();
+}
+inline const ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::LabelPair >&
+Metric::label() const {
+  // @@protoc_insertion_point(field_list:io.prometheus.client.Metric.label)
+  return label_;
+}
+inline ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::LabelPair >*
+Metric::mutable_label() {
+  // @@protoc_insertion_point(field_mutable_list:io.prometheus.client.Metric.label)
+  return &label_;
+}
+
+// optional .io.prometheus.client.Gauge gauge = 2;
+inline bool Metric::has_gauge() const {
+  return (_has_bits_[0] & 0x00000002u) != 0;
+}
+inline void Metric::set_has_gauge() {
+  _has_bits_[0] |= 0x00000002u;
+}
+inline void Metric::clear_has_gauge() {
+  _has_bits_[0] &= ~0x00000002u;
+}
+inline void Metric::clear_gauge() {
+  if (gauge_ != NULL) gauge_->::io::prometheus::client::Gauge::Clear();
+  clear_has_gauge();
+}
+inline const ::io::prometheus::client::Gauge& Metric::gauge() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Metric.gauge)
+  return gauge_ != NULL ? *gauge_ : *default_instance_->gauge_;
+}
+inline ::io::prometheus::client::Gauge* Metric::mutable_gauge() {
+  set_has_gauge();
+  if (gauge_ == NULL) gauge_ = new ::io::prometheus::client::Gauge;
+  // @@protoc_insertion_point(field_mutable:io.prometheus.client.Metric.gauge)
+  return gauge_;
+}
+inline ::io::prometheus::client::Gauge* Metric::release_gauge() {
+  clear_has_gauge();
+  ::io::prometheus::client::Gauge* temp = gauge_;
+  gauge_ = NULL;
+  return temp;
+}
+inline void Metric::set_allocated_gauge(::io::prometheus::client::Gauge* gauge) {
+  delete gauge_;
+  gauge_ = gauge;
+  if (gauge) {
+    set_has_gauge();
+  } else {
+    clear_has_gauge();
+  }
+  // @@protoc_insertion_point(field_set_allocated:io.prometheus.client.Metric.gauge)
+}
+
+// optional .io.prometheus.client.Counter counter = 3;
+inline bool Metric::has_counter() const {
+  return (_has_bits_[0] & 0x00000004u) != 0;
+}
+inline void Metric::set_has_counter() {
+  _has_bits_[0] |= 0x00000004u;
+}
+inline void Metric::clear_has_counter() {
+  _has_bits_[0] &= ~0x00000004u;
+}
+inline void Metric::clear_counter() {
+  if (counter_ != NULL) counter_->::io::prometheus::client::Counter::Clear();
+  clear_has_counter();
+}
+inline const ::io::prometheus::client::Counter& Metric::counter() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Metric.counter)
+  return counter_ != NULL ? *counter_ : *default_instance_->counter_;
+}
+inline ::io::prometheus::client::Counter* Metric::mutable_counter() {
+  set_has_counter();
+  if (counter_ == NULL) counter_ = new ::io::prometheus::client::Counter;
+  // @@protoc_insertion_point(field_mutable:io.prometheus.client.Metric.counter)
+  return counter_;
+}
+inline ::io::prometheus::client::Counter* Metric::release_counter() {
+  clear_has_counter();
+  ::io::prometheus::client::Counter* temp = counter_;
+  counter_ = NULL;
+  return temp;
+}
+inline void Metric::set_allocated_counter(::io::prometheus::client::Counter* counter) {
+  delete counter_;
+  counter_ = counter;
+  if (counter) {
+    set_has_counter();
+  } else {
+    clear_has_counter();
+  }
+  // @@protoc_insertion_point(field_set_allocated:io.prometheus.client.Metric.counter)
+}
+
+// optional .io.prometheus.client.Summary summary = 4;
+inline bool Metric::has_summary() const {
+  return (_has_bits_[0] & 0x00000008u) != 0;
+}
+inline void Metric::set_has_summary() {
+  _has_bits_[0] |= 0x00000008u;
+}
+inline void Metric::clear_has_summary() {
+  _has_bits_[0] &= ~0x00000008u;
+}
+inline void Metric::clear_summary() {
+  if (summary_ != NULL) summary_->::io::prometheus::client::Summary::Clear();
+  clear_has_summary();
+}
+inline const ::io::prometheus::client::Summary& Metric::summary() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Metric.summary)
+  return summary_ != NULL ? *summary_ : *default_instance_->summary_;
+}
+inline ::io::prometheus::client::Summary* Metric::mutable_summary() {
+  set_has_summary();
+  if (summary_ == NULL) summary_ = new ::io::prometheus::client::Summary;
+  // @@protoc_insertion_point(field_mutable:io.prometheus.client.Metric.summary)
+  return summary_;
+}
+inline ::io::prometheus::client::Summary* Metric::release_summary() {
+  clear_has_summary();
+  ::io::prometheus::client::Summary* temp = summary_;
+  summary_ = NULL;
+  return temp;
+}
+inline void Metric::set_allocated_summary(::io::prometheus::client::Summary* summary) {
+  delete summary_;
+  summary_ = summary;
+  if (summary) {
+    set_has_summary();
+  } else {
+    clear_has_summary();
+  }
+  // @@protoc_insertion_point(field_set_allocated:io.prometheus.client.Metric.summary)
+}
+
+// optional .io.prometheus.client.Untyped untyped = 5;
+inline bool Metric::has_untyped() const {
+  return (_has_bits_[0] & 0x00000010u) != 0;
+}
+inline void Metric::set_has_untyped() {
+  _has_bits_[0] |= 0x00000010u;
+}
+inline void Metric::clear_has_untyped() {
+  _has_bits_[0] &= ~0x00000010u;
+}
+inline void Metric::clear_untyped() {
+  if (untyped_ != NULL) untyped_->::io::prometheus::client::Untyped::Clear();
+  clear_has_untyped();
+}
+inline const ::io::prometheus::client::Untyped& Metric::untyped() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Metric.untyped)
+  return untyped_ != NULL ? *untyped_ : *default_instance_->untyped_;
+}
+inline ::io::prometheus::client::Untyped* Metric::mutable_untyped() {
+  set_has_untyped();
+  if (untyped_ == NULL) untyped_ = new ::io::prometheus::client::Untyped;
+  // @@protoc_insertion_point(field_mutable:io.prometheus.client.Metric.untyped)
+  return untyped_;
+}
+inline ::io::prometheus::client::Untyped* Metric::release_untyped() {
+  clear_has_untyped();
+  ::io::prometheus::client::Untyped* temp = untyped_;
+  untyped_ = NULL;
+  return temp;
+}
+inline void Metric::set_allocated_untyped(::io::prometheus::client::Untyped* untyped) {
+  delete untyped_;
+  untyped_ = untyped;
+  if (untyped) {
+    set_has_untyped();
+  } else {
+    clear_has_untyped();
+  }
+  // @@protoc_insertion_point(field_set_allocated:io.prometheus.client.Metric.untyped)
+}
+
+// optional .io.prometheus.client.Histogram histogram = 7;
+inline bool Metric::has_histogram() const {
+  return (_has_bits_[0] & 0x00000020u) != 0;
+}
+inline void Metric::set_has_histogram() {
+  _has_bits_[0] |= 0x00000020u;
+}
+inline void Metric::clear_has_histogram() {
+  _has_bits_[0] &= ~0x00000020u;
+}
+inline void Metric::clear_histogram() {
+  if (histogram_ != NULL) histogram_->::io::prometheus::client::Histogram::Clear();
+  clear_has_histogram();
+}
+inline const ::io::prometheus::client::Histogram& Metric::histogram() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Metric.histogram)
+  return histogram_ != NULL ? *histogram_ : *default_instance_->histogram_;
+}
+inline ::io::prometheus::client::Histogram* Metric::mutable_histogram() {
+  set_has_histogram();
+  if (histogram_ == NULL) histogram_ = new ::io::prometheus::client::Histogram;
+  // @@protoc_insertion_point(field_mutable:io.prometheus.client.Metric.histogram)
+  return histogram_;
+}
+inline ::io::prometheus::client::Histogram* Metric::release_histogram() {
+  clear_has_histogram();
+  ::io::prometheus::client::Histogram* temp = histogram_;
+  histogram_ = NULL;
+  return temp;
+}
+inline void Metric::set_allocated_histogram(::io::prometheus::client::Histogram* histogram) {
+  delete histogram_;
+  histogram_ = histogram;
+  if (histogram) {
+    set_has_histogram();
+  } else {
+    clear_has_histogram();
+  }
+  // @@protoc_insertion_point(field_set_allocated:io.prometheus.client.Metric.histogram)
+}
+
+// optional int64 timestamp_ms = 6;
+inline bool Metric::has_timestamp_ms() const {
+  return (_has_bits_[0] & 0x00000040u) != 0;
+}
+inline void Metric::set_has_timestamp_ms() {
+  _has_bits_[0] |= 0x00000040u;
+}
+inline void Metric::clear_has_timestamp_ms() {
+  _has_bits_[0] &= ~0x00000040u;
+}
+inline void Metric::clear_timestamp_ms() {
+  timestamp_ms_ = GOOGLE_LONGLONG(0);
+  clear_has_timestamp_ms();
+}
+inline ::google::protobuf::int64 Metric::timestamp_ms() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.Metric.timestamp_ms)
+  return timestamp_ms_;
+}
+inline void Metric::set_timestamp_ms(::google::protobuf::int64 value) {
+  set_has_timestamp_ms();
+  timestamp_ms_ = value;
+  // @@protoc_insertion_point(field_set:io.prometheus.client.Metric.timestamp_ms)
+}
+
+// -------------------------------------------------------------------
+
+// MetricFamily
+
+// optional string name = 1;
+inline bool MetricFamily::has_name() const {
+  return (_has_bits_[0] & 0x00000001u) != 0;
+}
+inline void MetricFamily::set_has_name() {
+  _has_bits_[0] |= 0x00000001u;
+}
+inline void MetricFamily::clear_has_name() {
+  _has_bits_[0] &= ~0x00000001u;
+}
+inline void MetricFamily::clear_name() {
+  if (name_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    name_->clear();
+  }
+  clear_has_name();
+}
+inline const ::std::string& MetricFamily::name() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.MetricFamily.name)
+  return *name_;
+}
+inline void MetricFamily::set_name(const ::std::string& value) {
+  set_has_name();
+  if (name_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    name_ = new ::std::string;
+  }
+  name_->assign(value);
+  // @@protoc_insertion_point(field_set:io.prometheus.client.MetricFamily.name)
+}
+inline void MetricFamily::set_name(const char* value) {
+  set_has_name();
+  if (name_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    name_ = new ::std::string;
+  }
+  name_->assign(value);
+  // @@protoc_insertion_point(field_set_char:io.prometheus.client.MetricFamily.name)
+}
+inline void MetricFamily::set_name(const char* value, size_t size) {
+  set_has_name();
+  if (name_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    name_ = new ::std::string;
+  }
+  name_->assign(reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_set_pointer:io.prometheus.client.MetricFamily.name)
+}
+inline ::std::string* MetricFamily::mutable_name() {
+  set_has_name();
+  if (name_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    name_ = new ::std::string;
+  }
+  // @@protoc_insertion_point(field_mutable:io.prometheus.client.MetricFamily.name)
+  return name_;
+}
+inline ::std::string* MetricFamily::release_name() {
+  clear_has_name();
+  if (name_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    return NULL;
+  } else {
+    ::std::string* temp = name_;
+    name_ = const_cast< ::std::string*>(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+    return temp;
+  }
+}
+inline void MetricFamily::set_allocated_name(::std::string* name) {
+  if (name_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    delete name_;
+  }
+  if (name) {
+    set_has_name();
+    name_ = name;
+  } else {
+    clear_has_name();
+    name_ = const_cast< ::std::string*>(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+  }
+  // @@protoc_insertion_point(field_set_allocated:io.prometheus.client.MetricFamily.name)
+}
+
+// optional string help = 2;
+inline bool MetricFamily::has_help() const {
+  return (_has_bits_[0] & 0x00000002u) != 0;
+}
+inline void MetricFamily::set_has_help() {
+  _has_bits_[0] |= 0x00000002u;
+}
+inline void MetricFamily::clear_has_help() {
+  _has_bits_[0] &= ~0x00000002u;
+}
+inline void MetricFamily::clear_help() {
+  if (help_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    help_->clear();
+  }
+  clear_has_help();
+}
+inline const ::std::string& MetricFamily::help() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.MetricFamily.help)
+  return *help_;
+}
+inline void MetricFamily::set_help(const ::std::string& value) {
+  set_has_help();
+  if (help_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    help_ = new ::std::string;
+  }
+  help_->assign(value);
+  // @@protoc_insertion_point(field_set:io.prometheus.client.MetricFamily.help)
+}
+inline void MetricFamily::set_help(const char* value) {
+  set_has_help();
+  if (help_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    help_ = new ::std::string;
+  }
+  help_->assign(value);
+  // @@protoc_insertion_point(field_set_char:io.prometheus.client.MetricFamily.help)
+}
+inline void MetricFamily::set_help(const char* value, size_t size) {
+  set_has_help();
+  if (help_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    help_ = new ::std::string;
+  }
+  help_->assign(reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_set_pointer:io.prometheus.client.MetricFamily.help)
+}
+inline ::std::string* MetricFamily::mutable_help() {
+  set_has_help();
+  if (help_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    help_ = new ::std::string;
+  }
+  // @@protoc_insertion_point(field_mutable:io.prometheus.client.MetricFamily.help)
+  return help_;
+}
+inline ::std::string* MetricFamily::release_help() {
+  clear_has_help();
+  if (help_ == &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    return NULL;
+  } else {
+    ::std::string* temp = help_;
+    help_ = const_cast< ::std::string*>(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+    return temp;
+  }
+}
+inline void MetricFamily::set_allocated_help(::std::string* help) {
+  if (help_ != &::google::protobuf::internal::GetEmptyStringAlreadyInited()) {
+    delete help_;
+  }
+  if (help) {
+    set_has_help();
+    help_ = help;
+  } else {
+    clear_has_help();
+    help_ = const_cast< ::std::string*>(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
+  }
+  // @@protoc_insertion_point(field_set_allocated:io.prometheus.client.MetricFamily.help)
+}
+
+// optional .io.prometheus.client.MetricType type = 3;
+inline bool MetricFamily::has_type() const {
+  return (_has_bits_[0] & 0x00000004u) != 0;
+}
+inline void MetricFamily::set_has_type() {
+  _has_bits_[0] |= 0x00000004u;
+}
+inline void MetricFamily::clear_has_type() {
+  _has_bits_[0] &= ~0x00000004u;
+}
+inline void MetricFamily::clear_type() {
+  type_ = 0;
+  clear_has_type();
+}
+inline ::io::prometheus::client::MetricType MetricFamily::type() const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.MetricFamily.type)
+  return static_cast< ::io::prometheus::client::MetricType >(type_);
+}
+inline void MetricFamily::set_type(::io::prometheus::client::MetricType value) {
+  assert(::io::prometheus::client::MetricType_IsValid(value));
+  set_has_type();
+  type_ = value;
+  // @@protoc_insertion_point(field_set:io.prometheus.client.MetricFamily.type)
+}
+
+// repeated .io.prometheus.client.Metric metric = 4;
+inline int MetricFamily::metric_size() const {
+  return metric_.size();
+}
+inline void MetricFamily::clear_metric() {
+  metric_.Clear();
+}
+inline const ::io::prometheus::client::Metric& MetricFamily::metric(int index) const {
+  // @@protoc_insertion_point(field_get:io.prometheus.client.MetricFamily.metric)
+  return metric_.Get(index);
+}
+inline ::io::prometheus::client::Metric* MetricFamily::mutable_metric(int index) {
+  // @@protoc_insertion_point(field_mutable:io.prometheus.client.MetricFamily.metric)
+  return metric_.Mutable(index);
+}
+inline ::io::prometheus::client::Metric* MetricFamily::add_metric() {
+  // @@protoc_insertion_point(field_add:io.prometheus.client.MetricFamily.metric)
+  return metric_.Add();
+}
+inline const ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Metric >&
+MetricFamily::metric() const {
+  // @@protoc_insertion_point(field_list:io.prometheus.client.MetricFamily.metric)
+  return metric_;
+}
+inline ::google::protobuf::RepeatedPtrField< ::io::prometheus::client::Metric >*
+MetricFamily::mutable_metric() {
+  // @@protoc_insertion_point(field_mutable_list:io.prometheus.client.MetricFamily.metric)
+  return &metric_;
+}
+
+
+// @@protoc_insertion_point(namespace_scope)
+
+}  // namespace client
+}  // namespace prometheus
+}  // namespace io
+
+#ifndef SWIG
+namespace google {
+namespace protobuf {
+
+template <> struct is_proto_enum< ::io::prometheus::client::MetricType> : ::google::protobuf::internal::true_type {};
+template <>
+inline const EnumDescriptor* GetEnumDescriptor< ::io::prometheus::client::MetricType>() {
+  return ::io::prometheus::client::MetricType_descriptor();
+}
+
+}  // namespace google
+}  // namespace protobuf
+#endif  // SWIG
+
+// @@protoc_insertion_point(global_scope)
+
+#endif  // PROTOBUF_metrics_2eproto__INCLUDED
diff --git a/vendor/github.com/prometheus/client_model/go/metrics.pb.go b/vendor/github.com/prometheus/client_model/go/metrics.pb.go
new file mode 100644
index 000000000..b065f8683
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/go/metrics.pb.go
@@ -0,0 +1,364 @@
+// Code generated by protoc-gen-go.
+// source: metrics.proto
+// DO NOT EDIT!
+
+/*
+Package io_prometheus_client is a generated protocol buffer package.
+
+It is generated from these files:
+	metrics.proto
+
+It has these top-level messages:
+	LabelPair
+	Gauge
+	Counter
+	Quantile
+	Summary
+	Untyped
+	Histogram
+	Bucket
+	Metric
+	MetricFamily
+*/
+package io_prometheus_client
+
+import proto "github.com/golang/protobuf/proto"
+import math "math"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = math.Inf
+
+type MetricType int32
+
+const (
+	MetricType_COUNTER   MetricType = 0
+	MetricType_GAUGE     MetricType = 1
+	MetricType_SUMMARY   MetricType = 2
+	MetricType_UNTYPED   MetricType = 3
+	MetricType_HISTOGRAM MetricType = 4
+)
+
+var MetricType_name = map[int32]string{
+	0: "COUNTER",
+	1: "GAUGE",
+	2: "SUMMARY",
+	3: "UNTYPED",
+	4: "HISTOGRAM",
+}
+var MetricType_value = map[string]int32{
+	"COUNTER":   0,
+	"GAUGE":     1,
+	"SUMMARY":   2,
+	"UNTYPED":   3,
+	"HISTOGRAM": 4,
+}
+
+func (x MetricType) Enum() *MetricType {
+	p := new(MetricType)
+	*p = x
+	return p
+}
+func (x MetricType) String() string {
+	return proto.EnumName(MetricType_name, int32(x))
+}
+func (x *MetricType) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(MetricType_value, data, "MetricType")
+	if err != nil {
+		return err
+	}
+	*x = MetricType(value)
+	return nil
+}
+
+type LabelPair struct {
+	Name             *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Value            *string `protobuf:"bytes,2,opt,name=value" json:"value,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *LabelPair) Reset()         { *m = LabelPair{} }
+func (m *LabelPair) String() string { return proto.CompactTextString(m) }
+func (*LabelPair) ProtoMessage()    {}
+
+func (m *LabelPair) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *LabelPair) GetValue() string {
+	if m != nil && m.Value != nil {
+		return *m.Value
+	}
+	return ""
+}
+
+type Gauge struct {
+	Value            *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
+	XXX_unrecognized []byte   `json:"-"`
+}
+
+func (m *Gauge) Reset()         { *m = Gauge{} }
+func (m *Gauge) String() string { return proto.CompactTextString(m) }
+func (*Gauge) ProtoMessage()    {}
+
+func (m *Gauge) GetValue() float64 {
+	if m != nil && m.Value != nil {
+		return *m.Value
+	}
+	return 0
+}
+
+type Counter struct {
+	Value            *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
+	XXX_unrecognized []byte   `json:"-"`
+}
+
+func (m *Counter) Reset()         { *m = Counter{} }
+func (m *Counter) String() string { return proto.CompactTextString(m) }
+func (*Counter) ProtoMessage()    {}
+
+func (m *Counter) GetValue() float64 {
+	if m != nil && m.Value != nil {
+		return *m.Value
+	}
+	return 0
+}
+
+type Quantile struct {
+	Quantile         *float64 `protobuf:"fixed64,1,opt,name=quantile" json:"quantile,omitempty"`
+	Value            *float64 `protobuf:"fixed64,2,opt,name=value" json:"value,omitempty"`
+	XXX_unrecognized []byte   `json:"-"`
+}
+
+func (m *Quantile) Reset()         { *m = Quantile{} }
+func (m *Quantile) String() string { return proto.CompactTextString(m) }
+func (*Quantile) ProtoMessage()    {}
+
+func (m *Quantile) GetQuantile() float64 {
+	if m != nil && m.Quantile != nil {
+		return *m.Quantile
+	}
+	return 0
+}
+
+func (m *Quantile) GetValue() float64 {
+	if m != nil && m.Value != nil {
+		return *m.Value
+	}
+	return 0
+}
+
+type Summary struct {
+	SampleCount      *uint64     `protobuf:"varint,1,opt,name=sample_count" json:"sample_count,omitempty"`
+	SampleSum        *float64    `protobuf:"fixed64,2,opt,name=sample_sum" json:"sample_sum,omitempty"`
+	Quantile         []*Quantile `protobuf:"bytes,3,rep,name=quantile" json:"quantile,omitempty"`
+	XXX_unrecognized []byte      `json:"-"`
+}
+
+func (m *Summary) Reset()         { *m = Summary{} }
+func (m *Summary) String() string { return proto.CompactTextString(m) }
+func (*Summary) ProtoMessage()    {}
+
+func (m *Summary) GetSampleCount() uint64 {
+	if m != nil && m.SampleCount != nil {
+		return *m.SampleCount
+	}
+	return 0
+}
+
+func (m *Summary) GetSampleSum() float64 {
+	if m != nil && m.SampleSum != nil {
+		return *m.SampleSum
+	}
+	return 0
+}
+
+func (m *Summary) GetQuantile() []*Quantile {
+	if m != nil {
+		return m.Quantile
+	}
+	return nil
+}
+
+type Untyped struct {
+	Value            *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
+	XXX_unrecognized []byte   `json:"-"`
+}
+
+func (m *Untyped) Reset()         { *m = Untyped{} }
+func (m *Untyped) String() string { return proto.CompactTextString(m) }
+func (*Untyped) ProtoMessage()    {}
+
+func (m *Untyped) GetValue() float64 {
+	if m != nil && m.Value != nil {
+		return *m.Value
+	}
+	return 0
+}
+
+type Histogram struct {
+	SampleCount      *uint64   `protobuf:"varint,1,opt,name=sample_count" json:"sample_count,omitempty"`
+	SampleSum        *float64  `protobuf:"fixed64,2,opt,name=sample_sum" json:"sample_sum,omitempty"`
+	Bucket           []*Bucket `protobuf:"bytes,3,rep,name=bucket" json:"bucket,omitempty"`
+	XXX_unrecognized []byte    `json:"-"`
+}
+
+func (m *Histogram) Reset()         { *m = Histogram{} }
+func (m *Histogram) String() string { return proto.CompactTextString(m) }
+func (*Histogram) ProtoMessage()    {}
+
+func (m *Histogram) GetSampleCount() uint64 {
+	if m != nil && m.SampleCount != nil {
+		return *m.SampleCount
+	}
+	return 0
+}
+
+func (m *Histogram) GetSampleSum() float64 {
+	if m != nil && m.SampleSum != nil {
+		return *m.SampleSum
+	}
+	return 0
+}
+
+func (m *Histogram) GetBucket() []*Bucket {
+	if m != nil {
+		return m.Bucket
+	}
+	return nil
+}
+
+type Bucket struct {
+	CumulativeCount  *uint64  `protobuf:"varint,1,opt,name=cumulative_count" json:"cumulative_count,omitempty"`
+	UpperBound       *float64 `protobuf:"fixed64,2,opt,name=upper_bound" json:"upper_bound,omitempty"`
+	XXX_unrecognized []byte   `json:"-"`
+}
+
+func (m *Bucket) Reset()         { *m = Bucket{} }
+func (m *Bucket) String() string { return proto.CompactTextString(m) }
+func (*Bucket) ProtoMessage()    {}
+
+func (m *Bucket) GetCumulativeCount() uint64 {
+	if m != nil && m.CumulativeCount != nil {
+		return *m.CumulativeCount
+	}
+	return 0
+}
+
+func (m *Bucket) GetUpperBound() float64 {
+	if m != nil && m.UpperBound != nil {
+		return *m.UpperBound
+	}
+	return 0
+}
+
+type Metric struct {
+	Label            []*LabelPair `protobuf:"bytes,1,rep,name=label" json:"label,omitempty"`
+	Gauge            *Gauge       `protobuf:"bytes,2,opt,name=gauge" json:"gauge,omitempty"`
+	Counter          *Counter     `protobuf:"bytes,3,opt,name=counter" json:"counter,omitempty"`
+	Summary          *Summary     `protobuf:"bytes,4,opt,name=summary" json:"summary,omitempty"`
+	Untyped          *Untyped     `protobuf:"bytes,5,opt,name=untyped" json:"untyped,omitempty"`
+	Histogram        *Histogram   `protobuf:"bytes,7,opt,name=histogram" json:"histogram,omitempty"`
+	TimestampMs      *int64       `protobuf:"varint,6,opt,name=timestamp_ms" json:"timestamp_ms,omitempty"`
+	XXX_unrecognized []byte       `json:"-"`
+}
+
+func (m *Metric) Reset()         { *m = Metric{} }
+func (m *Metric) String() string { return proto.CompactTextString(m) }
+func (*Metric) ProtoMessage()    {}
+
+func (m *Metric) GetLabel() []*LabelPair {
+	if m != nil {
+		return m.Label
+	}
+	return nil
+}
+
+func (m *Metric) GetGauge() *Gauge {
+	if m != nil {
+		return m.Gauge
+	}
+	return nil
+}
+
+func (m *Metric) GetCounter() *Counter {
+	if m != nil {
+		return m.Counter
+	}
+	return nil
+}
+
+func (m *Metric) GetSummary() *Summary {
+	if m != nil {
+		return m.Summary
+	}
+	return nil
+}
+
+func (m *Metric) GetUntyped() *Untyped {
+	if m != nil {
+		return m.Untyped
+	}
+	return nil
+}
+
+func (m *Metric) GetHistogram() *Histogram {
+	if m != nil {
+		return m.Histogram
+	}
+	return nil
+}
+
+func (m *Metric) GetTimestampMs() int64 {
+	if m != nil && m.TimestampMs != nil {
+		return *m.TimestampMs
+	}
+	return 0
+}
+
+type MetricFamily struct {
+	Name             *string     `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Help             *string     `protobuf:"bytes,2,opt,name=help" json:"help,omitempty"`
+	Type             *MetricType `protobuf:"varint,3,opt,name=type,enum=io.prometheus.client.MetricType" json:"type,omitempty"`
+	Metric           []*Metric   `protobuf:"bytes,4,rep,name=metric" json:"metric,omitempty"`
+	XXX_unrecognized []byte      `json:"-"`
+}
+
+func (m *MetricFamily) Reset()         { *m = MetricFamily{} }
+func (m *MetricFamily) String() string { return proto.CompactTextString(m) }
+func (*MetricFamily) ProtoMessage()    {}
+
+func (m *MetricFamily) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *MetricFamily) GetHelp() string {
+	if m != nil && m.Help != nil {
+		return *m.Help
+	}
+	return ""
+}
+
+func (m *MetricFamily) GetType() MetricType {
+	if m != nil && m.Type != nil {
+		return *m.Type
+	}
+	return MetricType_COUNTER
+}
+
+func (m *MetricFamily) GetMetric() []*Metric {
+	if m != nil {
+		return m.Metric
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterEnum("io.prometheus.client.MetricType", MetricType_name, MetricType_value)
+}
diff --git a/vendor/github.com/prometheus/client_model/metrics.proto b/vendor/github.com/prometheus/client_model/metrics.proto
new file mode 100644
index 000000000..0b84af920
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/metrics.proto
@@ -0,0 +1,81 @@
+// Copyright 2013 Prometheus Team
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto2";
+
+package io.prometheus.client;
+option java_package = "io.prometheus.client";
+
+message LabelPair {
+  optional string name  = 1;
+  optional string value = 2;
+}
+
+enum MetricType {
+  COUNTER    = 0;
+  GAUGE      = 1;
+  SUMMARY    = 2;
+  UNTYPED    = 3;
+  HISTOGRAM  = 4;
+}
+
+message Gauge {
+  optional double value = 1;
+}
+
+message Counter {
+  optional double value = 1;
+}
+
+message Quantile {
+  optional double quantile = 1;
+  optional double value    = 2;
+}
+
+message Summary {
+  optional uint64   sample_count = 1;
+  optional double   sample_sum   = 2;
+  repeated Quantile quantile     = 3;
+}
+
+message Untyped {
+  optional double value = 1;
+}
+
+message Histogram {
+  optional uint64 sample_count = 1;
+  optional double sample_sum   = 2;
+  repeated Bucket bucket       = 3; // Ordered in increasing order of upper_bound, +Inf bucket is optional.
+}
+
+message Bucket {
+  optional uint64 cumulative_count = 1; // Cumulative in increasing order.
+  optional double upper_bound = 2;      // Inclusive.
+}
+
+message Metric {
+  repeated LabelPair label        = 1;
+  optional Gauge     gauge        = 2;
+  optional Counter   counter      = 3;
+  optional Summary   summary      = 4;
+  optional Untyped   untyped      = 5;
+  optional Histogram histogram    = 7;
+  optional int64     timestamp_ms = 6;
+}
+
+message MetricFamily {
+  optional string     name   = 1;
+  optional string     help   = 2;
+  optional MetricType type   = 3;
+  repeated Metric     metric = 4;
+}
diff --git a/vendor/github.com/prometheus/client_model/pom.xml b/vendor/github.com/prometheus/client_model/pom.xml
new file mode 100644
index 000000000..4d34c9015
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/pom.xml
@@ -0,0 +1,130 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>io.prometheus.client</groupId>
+    <artifactId>model</artifactId>
+    <version>0.0.3-SNAPSHOT</version>
+
+    <parent>
+        <groupId>org.sonatype.oss</groupId>
+        <artifactId>oss-parent</artifactId>
+        <version>7</version>
+    </parent>
+
+    <name>Prometheus Client Data Model</name>
+    <url>http://github.com/prometheus/client_model</url>
+    <description>
+      Prometheus Client Data Model: Generated Protocol Buffer Assets
+    </description>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+            <distribution>repo</distribution>
+        </license>
+    </licenses>
+
+    <scm>
+        <connection>scm:git:git@github.com:prometheus/client_model.git</connection>
+        <developerConnection>scm:git:git@github.com:prometheus/client_model.git</developerConnection>
+        <url>git@github.com:prometheus/client_model.git</url>
+    </scm>
+
+    <developers>
+        <developer>
+            <id>mtp</id>
+            <name>Matt T. Proud</name>
+            <email>matt.proud@gmail.com</email>
+        </developer>
+    </developers>
+
+    <dependencies>
+      <dependency>
+        <groupId>com.google.protobuf</groupId>
+        <artifactId>protobuf-java</artifactId>
+        <version>2.5.0</version>
+      </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <version>2.8</version>
+                <configuration>
+                    <encoding>UTF-8</encoding>
+                    <docencoding>UTF-8</docencoding>
+                    <linksource>true</linksource>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>generate-javadoc-site-report</id>
+                        <phase>site</phase>
+                        <goals>
+                            <goal>javadoc</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                      <id>attach-javadocs</id>
+                      <goals>
+                        <goal>jar</goal>
+                      </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>1.6</source>
+                    <target>1.6</target>
+                </configuration>
+                <version>3.1</version>
+            </plugin>
+            <plugin>
+              <groupId>org.apache.maven.plugins</groupId>
+              <artifactId>maven-source-plugin</artifactId>
+              <version>2.2.1</version>
+              <executions>
+                <execution>
+                  <id>attach-sources</id>
+                  <goals>
+                    <goal>jar</goal>
+                  </goals>
+                </execution>
+              </executions>
+            </plugin>
+        </plugins>
+    </build>
+    <profiles>
+        <profile>
+            <id>release-sign-artifacts</id>
+            <activation>
+                <property>
+                    <name>performRelease</name>
+                    <value>true</value>
+                </property>
+            </activation>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-gpg-plugin</artifactId>
+                        <version>1.4</version>
+                        <executions>
+                            <execution>
+                                <id>sign-artifacts</id>
+                                <phase>verify</phase>
+                                <goals>
+                                    <goal>sign</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+</project>
diff --git a/vendor/github.com/prometheus/client_model/python/prometheus/__init__.py b/vendor/github.com/prometheus/client_model/python/prometheus/__init__.py
new file mode 100644
index 000000000..617c0ced0
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/python/prometheus/__init__.py
@@ -0,0 +1,12 @@
+ # Copyright 2013 Prometheus Team
+ # Licensed under the Apache License, Version 2.0 (the "License");
+ # you may not use this file except in compliance with the License.
+ # You may obtain a copy of the License at
+
+ # http://www.apache.org/licenses/LICENSE-2.0
+
+ # Unless required by applicable law or agreed to in writing, software
+ # distributed under the License is distributed on an "AS IS" BASIS,
+ # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ # See the License for the specific language governing permissions and
+ # limitations under the License.
diff --git a/vendor/github.com/prometheus/client_model/python/prometheus/client/__init__.py b/vendor/github.com/prometheus/client_model/python/prometheus/client/__init__.py
new file mode 100644
index 000000000..617c0ced0
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/python/prometheus/client/__init__.py
@@ -0,0 +1,12 @@
+ # Copyright 2013 Prometheus Team
+ # Licensed under the Apache License, Version 2.0 (the "License");
+ # you may not use this file except in compliance with the License.
+ # You may obtain a copy of the License at
+
+ # http://www.apache.org/licenses/LICENSE-2.0
+
+ # Unless required by applicable law or agreed to in writing, software
+ # distributed under the License is distributed on an "AS IS" BASIS,
+ # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ # See the License for the specific language governing permissions and
+ # limitations under the License.
diff --git a/vendor/github.com/prometheus/client_model/python/prometheus/client/model/__init__.py b/vendor/github.com/prometheus/client_model/python/prometheus/client/model/__init__.py
new file mode 100644
index 000000000..d40327c32
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/python/prometheus/client/model/__init__.py
@@ -0,0 +1,14 @@
+ # Copyright 2013 Prometheus Team
+ # Licensed under the Apache License, Version 2.0 (the "License");
+ # you may not use this file except in compliance with the License.
+ # You may obtain a copy of the License at
+
+ # http://www.apache.org/licenses/LICENSE-2.0
+
+ # Unless required by applicable law or agreed to in writing, software
+ # distributed under the License is distributed on an "AS IS" BASIS,
+ # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ # See the License for the specific language governing permissions and
+ # limitations under the License.
+
+__all__ = ['metrics_pb2']
diff --git a/vendor/github.com/prometheus/client_model/python/prometheus/client/model/metrics_pb2.py b/vendor/github.com/prometheus/client_model/python/prometheus/client/model/metrics_pb2.py
new file mode 100644
index 000000000..8c239ac06
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/python/prometheus/client/model/metrics_pb2.py
@@ -0,0 +1,575 @@
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: metrics.proto
+
+import sys
+_b=sys.version_info[0]<3 and (lambda x:x) or (lambda x:x.encode('latin1'))
+from google.protobuf.internal import enum_type_wrapper
+from google.protobuf import descriptor as _descriptor
+from google.protobuf import message as _message
+from google.protobuf import reflection as _reflection
+from google.protobuf import symbol_database as _symbol_database
+from google.protobuf import descriptor_pb2
+# @@protoc_insertion_point(imports)
+
+_sym_db = _symbol_database.Default()
+
+
+
+
+DESCRIPTOR = _descriptor.FileDescriptor(
+  name='metrics.proto',
+  package='io.prometheus.client',
+  serialized_pb=_b('\n\rmetrics.proto\x12\x14io.prometheus.client\"(\n\tLabelPair\x12\x0c\n\x04name\x18\x01 \x01(\t\x12\r\n\x05value\x18\x02 \x01(\t\"\x16\n\x05Gauge\x12\r\n\x05value\x18\x01 \x01(\x01\"\x18\n\x07\x43ounter\x12\r\n\x05value\x18\x01 \x01(\x01\"+\n\x08Quantile\x12\x10\n\x08quantile\x18\x01 \x01(\x01\x12\r\n\x05value\x18\x02 \x01(\x01\"e\n\x07Summary\x12\x14\n\x0csample_count\x18\x01 \x01(\x04\x12\x12\n\nsample_sum\x18\x02 \x01(\x01\x12\x30\n\x08quantile\x18\x03 \x03(\x0b\x32\x1e.io.prometheus.client.Quantile\"\x18\n\x07Untyped\x12\r\n\x05value\x18\x01 \x01(\x01\"c\n\tHistogram\x12\x14\n\x0csample_count\x18\x01 \x01(\x04\x12\x12\n\nsample_sum\x18\x02 \x01(\x01\x12,\n\x06\x62ucket\x18\x03 \x03(\x0b\x32\x1c.io.prometheus.client.Bucket\"7\n\x06\x42ucket\x12\x18\n\x10\x63umulative_count\x18\x01 \x01(\x04\x12\x13\n\x0bupper_bound\x18\x02 \x01(\x01\"\xbe\x02\n\x06Metric\x12.\n\x05label\x18\x01 \x03(\x0b\x32\x1f.io.prometheus.client.LabelPair\x12*\n\x05gauge\x18\x02 \x01(\x0b\x32\x1b.io.prometheus.client.Gauge\x12.\n\x07\x63ounter\x18\x03 \x01(\x0b\x32\x1d.io.prometheus.client.Counter\x12.\n\x07summary\x18\x04 \x01(\x0b\x32\x1d.io.prometheus.client.Summary\x12.\n\x07untyped\x18\x05 \x01(\x0b\x32\x1d.io.prometheus.client.Untyped\x12\x32\n\thistogram\x18\x07 \x01(\x0b\x32\x1f.io.prometheus.client.Histogram\x12\x14\n\x0ctimestamp_ms\x18\x06 \x01(\x03\"\x88\x01\n\x0cMetricFamily\x12\x0c\n\x04name\x18\x01 \x01(\t\x12\x0c\n\x04help\x18\x02 \x01(\t\x12.\n\x04type\x18\x03 \x01(\x0e\x32 .io.prometheus.client.MetricType\x12,\n\x06metric\x18\x04 \x03(\x0b\x32\x1c.io.prometheus.client.Metric*M\n\nMetricType\x12\x0b\n\x07\x43OUNTER\x10\x00\x12\t\n\x05GAUGE\x10\x01\x12\x0b\n\x07SUMMARY\x10\x02\x12\x0b\n\x07UNTYPED\x10\x03\x12\r\n\tHISTOGRAM\x10\x04\x42\x16\n\x14io.prometheus.client')
+)
+_sym_db.RegisterFileDescriptor(DESCRIPTOR)
+
+_METRICTYPE = _descriptor.EnumDescriptor(
+  name='MetricType',
+  full_name='io.prometheus.client.MetricType',
+  filename=None,
+  file=DESCRIPTOR,
+  values=[
+    _descriptor.EnumValueDescriptor(
+      name='COUNTER', index=0, number=0,
+      options=None,
+      type=None),
+    _descriptor.EnumValueDescriptor(
+      name='GAUGE', index=1, number=1,
+      options=None,
+      type=None),
+    _descriptor.EnumValueDescriptor(
+      name='SUMMARY', index=2, number=2,
+      options=None,
+      type=None),
+    _descriptor.EnumValueDescriptor(
+      name='UNTYPED', index=3, number=3,
+      options=None,
+      type=None),
+    _descriptor.EnumValueDescriptor(
+      name='HISTOGRAM', index=4, number=4,
+      options=None,
+      type=None),
+  ],
+  containing_type=None,
+  options=None,
+  serialized_start=923,
+  serialized_end=1000,
+)
+_sym_db.RegisterEnumDescriptor(_METRICTYPE)
+
+MetricType = enum_type_wrapper.EnumTypeWrapper(_METRICTYPE)
+COUNTER = 0
+GAUGE = 1
+SUMMARY = 2
+UNTYPED = 3
+HISTOGRAM = 4
+
+
+
+_LABELPAIR = _descriptor.Descriptor(
+  name='LabelPair',
+  full_name='io.prometheus.client.LabelPair',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='name', full_name='io.prometheus.client.LabelPair.name', index=0,
+      number=1, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b("").decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='value', full_name='io.prometheus.client.LabelPair.value', index=1,
+      number=2, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b("").decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=39,
+  serialized_end=79,
+)
+
+
+_GAUGE = _descriptor.Descriptor(
+  name='Gauge',
+  full_name='io.prometheus.client.Gauge',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='value', full_name='io.prometheus.client.Gauge.value', index=0,
+      number=1, type=1, cpp_type=5, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=81,
+  serialized_end=103,
+)
+
+
+_COUNTER = _descriptor.Descriptor(
+  name='Counter',
+  full_name='io.prometheus.client.Counter',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='value', full_name='io.prometheus.client.Counter.value', index=0,
+      number=1, type=1, cpp_type=5, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=105,
+  serialized_end=129,
+)
+
+
+_QUANTILE = _descriptor.Descriptor(
+  name='Quantile',
+  full_name='io.prometheus.client.Quantile',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='quantile', full_name='io.prometheus.client.Quantile.quantile', index=0,
+      number=1, type=1, cpp_type=5, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='value', full_name='io.prometheus.client.Quantile.value', index=1,
+      number=2, type=1, cpp_type=5, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=131,
+  serialized_end=174,
+)
+
+
+_SUMMARY = _descriptor.Descriptor(
+  name='Summary',
+  full_name='io.prometheus.client.Summary',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='sample_count', full_name='io.prometheus.client.Summary.sample_count', index=0,
+      number=1, type=4, cpp_type=4, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='sample_sum', full_name='io.prometheus.client.Summary.sample_sum', index=1,
+      number=2, type=1, cpp_type=5, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='quantile', full_name='io.prometheus.client.Summary.quantile', index=2,
+      number=3, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=176,
+  serialized_end=277,
+)
+
+
+_UNTYPED = _descriptor.Descriptor(
+  name='Untyped',
+  full_name='io.prometheus.client.Untyped',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='value', full_name='io.prometheus.client.Untyped.value', index=0,
+      number=1, type=1, cpp_type=5, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=279,
+  serialized_end=303,
+)
+
+
+_HISTOGRAM = _descriptor.Descriptor(
+  name='Histogram',
+  full_name='io.prometheus.client.Histogram',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='sample_count', full_name='io.prometheus.client.Histogram.sample_count', index=0,
+      number=1, type=4, cpp_type=4, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='sample_sum', full_name='io.prometheus.client.Histogram.sample_sum', index=1,
+      number=2, type=1, cpp_type=5, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='bucket', full_name='io.prometheus.client.Histogram.bucket', index=2,
+      number=3, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=305,
+  serialized_end=404,
+)
+
+
+_BUCKET = _descriptor.Descriptor(
+  name='Bucket',
+  full_name='io.prometheus.client.Bucket',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='cumulative_count', full_name='io.prometheus.client.Bucket.cumulative_count', index=0,
+      number=1, type=4, cpp_type=4, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='upper_bound', full_name='io.prometheus.client.Bucket.upper_bound', index=1,
+      number=2, type=1, cpp_type=5, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=406,
+  serialized_end=461,
+)
+
+
+_METRIC = _descriptor.Descriptor(
+  name='Metric',
+  full_name='io.prometheus.client.Metric',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='label', full_name='io.prometheus.client.Metric.label', index=0,
+      number=1, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='gauge', full_name='io.prometheus.client.Metric.gauge', index=1,
+      number=2, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='counter', full_name='io.prometheus.client.Metric.counter', index=2,
+      number=3, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='summary', full_name='io.prometheus.client.Metric.summary', index=3,
+      number=4, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='untyped', full_name='io.prometheus.client.Metric.untyped', index=4,
+      number=5, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='histogram', full_name='io.prometheus.client.Metric.histogram', index=5,
+      number=7, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='timestamp_ms', full_name='io.prometheus.client.Metric.timestamp_ms', index=6,
+      number=6, type=3, cpp_type=2, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=464,
+  serialized_end=782,
+)
+
+
+_METRICFAMILY = _descriptor.Descriptor(
+  name='MetricFamily',
+  full_name='io.prometheus.client.MetricFamily',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='name', full_name='io.prometheus.client.MetricFamily.name', index=0,
+      number=1, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b("").decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='help', full_name='io.prometheus.client.MetricFamily.help', index=1,
+      number=2, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b("").decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='type', full_name='io.prometheus.client.MetricFamily.type', index=2,
+      number=3, type=14, cpp_type=8, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='metric', full_name='io.prometheus.client.MetricFamily.metric', index=3,
+      number=4, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=785,
+  serialized_end=921,
+)
+
+_SUMMARY.fields_by_name['quantile'].message_type = _QUANTILE
+_HISTOGRAM.fields_by_name['bucket'].message_type = _BUCKET
+_METRIC.fields_by_name['label'].message_type = _LABELPAIR
+_METRIC.fields_by_name['gauge'].message_type = _GAUGE
+_METRIC.fields_by_name['counter'].message_type = _COUNTER
+_METRIC.fields_by_name['summary'].message_type = _SUMMARY
+_METRIC.fields_by_name['untyped'].message_type = _UNTYPED
+_METRIC.fields_by_name['histogram'].message_type = _HISTOGRAM
+_METRICFAMILY.fields_by_name['type'].enum_type = _METRICTYPE
+_METRICFAMILY.fields_by_name['metric'].message_type = _METRIC
+DESCRIPTOR.message_types_by_name['LabelPair'] = _LABELPAIR
+DESCRIPTOR.message_types_by_name['Gauge'] = _GAUGE
+DESCRIPTOR.message_types_by_name['Counter'] = _COUNTER
+DESCRIPTOR.message_types_by_name['Quantile'] = _QUANTILE
+DESCRIPTOR.message_types_by_name['Summary'] = _SUMMARY
+DESCRIPTOR.message_types_by_name['Untyped'] = _UNTYPED
+DESCRIPTOR.message_types_by_name['Histogram'] = _HISTOGRAM
+DESCRIPTOR.message_types_by_name['Bucket'] = _BUCKET
+DESCRIPTOR.message_types_by_name['Metric'] = _METRIC
+DESCRIPTOR.message_types_by_name['MetricFamily'] = _METRICFAMILY
+DESCRIPTOR.enum_types_by_name['MetricType'] = _METRICTYPE
+
+LabelPair = _reflection.GeneratedProtocolMessageType('LabelPair', (_message.Message,), dict(
+  DESCRIPTOR = _LABELPAIR,
+  __module__ = 'metrics_pb2'
+  # @@protoc_insertion_point(class_scope:io.prometheus.client.LabelPair)
+  ))
+_sym_db.RegisterMessage(LabelPair)
+
+Gauge = _reflection.GeneratedProtocolMessageType('Gauge', (_message.Message,), dict(
+  DESCRIPTOR = _GAUGE,
+  __module__ = 'metrics_pb2'
+  # @@protoc_insertion_point(class_scope:io.prometheus.client.Gauge)
+  ))
+_sym_db.RegisterMessage(Gauge)
+
+Counter = _reflection.GeneratedProtocolMessageType('Counter', (_message.Message,), dict(
+  DESCRIPTOR = _COUNTER,
+  __module__ = 'metrics_pb2'
+  # @@protoc_insertion_point(class_scope:io.prometheus.client.Counter)
+  ))
+_sym_db.RegisterMessage(Counter)
+
+Quantile = _reflection.GeneratedProtocolMessageType('Quantile', (_message.Message,), dict(
+  DESCRIPTOR = _QUANTILE,
+  __module__ = 'metrics_pb2'
+  # @@protoc_insertion_point(class_scope:io.prometheus.client.Quantile)
+  ))
+_sym_db.RegisterMessage(Quantile)
+
+Summary = _reflection.GeneratedProtocolMessageType('Summary', (_message.Message,), dict(
+  DESCRIPTOR = _SUMMARY,
+  __module__ = 'metrics_pb2'
+  # @@protoc_insertion_point(class_scope:io.prometheus.client.Summary)
+  ))
+_sym_db.RegisterMessage(Summary)
+
+Untyped = _reflection.GeneratedProtocolMessageType('Untyped', (_message.Message,), dict(
+  DESCRIPTOR = _UNTYPED,
+  __module__ = 'metrics_pb2'
+  # @@protoc_insertion_point(class_scope:io.prometheus.client.Untyped)
+  ))
+_sym_db.RegisterMessage(Untyped)
+
+Histogram = _reflection.GeneratedProtocolMessageType('Histogram', (_message.Message,), dict(
+  DESCRIPTOR = _HISTOGRAM,
+  __module__ = 'metrics_pb2'
+  # @@protoc_insertion_point(class_scope:io.prometheus.client.Histogram)
+  ))
+_sym_db.RegisterMessage(Histogram)
+
+Bucket = _reflection.GeneratedProtocolMessageType('Bucket', (_message.Message,), dict(
+  DESCRIPTOR = _BUCKET,
+  __module__ = 'metrics_pb2'
+  # @@protoc_insertion_point(class_scope:io.prometheus.client.Bucket)
+  ))
+_sym_db.RegisterMessage(Bucket)
+
+Metric = _reflection.GeneratedProtocolMessageType('Metric', (_message.Message,), dict(
+  DESCRIPTOR = _METRIC,
+  __module__ = 'metrics_pb2'
+  # @@protoc_insertion_point(class_scope:io.prometheus.client.Metric)
+  ))
+_sym_db.RegisterMessage(Metric)
+
+MetricFamily = _reflection.GeneratedProtocolMessageType('MetricFamily', (_message.Message,), dict(
+  DESCRIPTOR = _METRICFAMILY,
+  __module__ = 'metrics_pb2'
+  # @@protoc_insertion_point(class_scope:io.prometheus.client.MetricFamily)
+  ))
+_sym_db.RegisterMessage(MetricFamily)
+
+
+DESCRIPTOR.has_options = True
+DESCRIPTOR._options = _descriptor._ParseOptions(descriptor_pb2.FileOptions(), _b('\n\024io.prometheus.client'))
+# @@protoc_insertion_point(module_scope)
diff --git a/vendor/github.com/prometheus/client_model/ruby/.gitignore b/vendor/github.com/prometheus/client_model/ruby/.gitignore
new file mode 100644
index 000000000..8442a4709
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/ruby/.gitignore
@@ -0,0 +1,5 @@
+*.gem
+.bundle
+Gemfile.lock
+pkg
+vendor/bundle
diff --git a/vendor/github.com/prometheus/client_model/ruby/Gemfile b/vendor/github.com/prometheus/client_model/ruby/Gemfile
new file mode 100644
index 000000000..1ff638cdc
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/ruby/Gemfile
@@ -0,0 +1,4 @@
+source 'https://rubygems.org'
+
+# Specify your gem's dependencies in prometheus-client-model.gemspec
+gemspec
diff --git a/vendor/github.com/prometheus/client_model/ruby/LICENSE b/vendor/github.com/prometheus/client_model/ruby/LICENSE
new file mode 100644
index 000000000..11069edd7
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/ruby/LICENSE
@@ -0,0 +1,201 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
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+   "You" (or "Your") shall mean an individual or Legal Entity
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+   "Work" shall mean the work of authorship, whether in Source or
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+   "Contribution" shall mean any work of authorship, including
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+   "Contributor" shall mean Licensor and any individual or Legal Entity
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+3. Grant of Patent License. Subject to the terms and conditions of
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+   You may add Your own copyright statement to Your modifications and
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+   the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
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+6. Trademarks. This License does not grant permission to use the trade
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+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
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+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
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+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
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+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
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+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+   To apply the Apache License to your work, attach the following
+   boilerplate notice, with the fields enclosed by brackets "[]"
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+Copyright [yyyy] [name of copyright owner]
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+Licensed under the Apache License, Version 2.0 (the "License");
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+You may obtain a copy of the License at
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+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
diff --git a/vendor/github.com/prometheus/client_model/ruby/Makefile b/vendor/github.com/prometheus/client_model/ruby/Makefile
new file mode 100644
index 000000000..09d544bf0
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/ruby/Makefile
@@ -0,0 +1,17 @@
+VENDOR_BUNDLE = vendor/bundle
+
+build: $(VENDOR_BUNDLE)/.bundled
+	BEEFCAKE_NAMESPACE=Prometheus::Client protoc --beefcake_out lib/prometheus/client/model -I .. ../metrics.proto
+
+$(VENDOR_BUNDLE):
+	mkdir -p $@
+
+$(VENDOR_BUNDLE)/.bundled: $(VENDOR_BUNDLE) Gemfile
+	bundle install --quiet --path $<
+	@touch $@
+
+clean:
+	-rm -f lib/prometheus/client/model/metrics.pb.rb
+	-rm -rf $(VENDOR_BUNDLE)
+
+.PHONY: build clean
diff --git a/vendor/github.com/prometheus/client_model/ruby/README.md b/vendor/github.com/prometheus/client_model/ruby/README.md
new file mode 100644
index 000000000..c45fcc7a9
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/ruby/README.md
@@ -0,0 +1,31 @@
+# Prometheus Ruby client model
+
+Data model artifacts for the [Prometheus Ruby client][1].
+
+## Installation
+
+    gem install prometheus-client-model
+
+## Usage
+
+Build the artifacts from the protobuf specification:
+
+    make build
+
+While this Gem's main purpose is to define the Prometheus data types for the
+[client][1], it's possible to use it without the client to decode a stream of
+delimited protobuf messages:
+
+```ruby
+require 'open-uri'
+require 'prometheus/client/model'
+
+CONTENT_TYPE = 'application/vnd.google.protobuf; proto=io.prometheus.client.MetricFamily; encoding=delimited'
+
+stream = open('http://localhost:9090/metrics', 'Accept' => CONTENT_TYPE).read
+while family = Prometheus::Client::MetricFamily.read_delimited(stream)
+  puts family
+end
+```
+
+[1]: https://github.com/prometheus/client_ruby
diff --git a/vendor/github.com/prometheus/client_model/ruby/Rakefile b/vendor/github.com/prometheus/client_model/ruby/Rakefile
new file mode 100644
index 000000000..29955274e
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/ruby/Rakefile
@@ -0,0 +1 @@
+require "bundler/gem_tasks"
diff --git a/vendor/github.com/prometheus/client_model/ruby/lib/prometheus/client/model.rb b/vendor/github.com/prometheus/client_model/ruby/lib/prometheus/client/model.rb
new file mode 100644
index 000000000..b5303bf1e
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/ruby/lib/prometheus/client/model.rb
@@ -0,0 +1,2 @@
+require 'prometheus/client/model/metrics.pb'
+require 'prometheus/client/model/version'
diff --git a/vendor/github.com/prometheus/client_model/ruby/lib/prometheus/client/model/metrics.pb.rb b/vendor/github.com/prometheus/client_model/ruby/lib/prometheus/client/model/metrics.pb.rb
new file mode 100644
index 000000000..a72114b8f
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/ruby/lib/prometheus/client/model/metrics.pb.rb
@@ -0,0 +1,111 @@
+## Generated from metrics.proto for io.prometheus.client
+require "beefcake"
+
+module Prometheus
+  module Client
+
+    module MetricType
+      COUNTER = 0
+      GAUGE = 1
+      SUMMARY = 2
+      UNTYPED = 3
+      HISTOGRAM = 4
+    end
+
+    class LabelPair
+      include Beefcake::Message
+    end
+
+    class Gauge
+      include Beefcake::Message
+    end
+
+    class Counter
+      include Beefcake::Message
+    end
+
+    class Quantile
+      include Beefcake::Message
+    end
+
+    class Summary
+      include Beefcake::Message
+    end
+
+    class Untyped
+      include Beefcake::Message
+    end
+
+    class Histogram
+      include Beefcake::Message
+    end
+
+    class Bucket
+      include Beefcake::Message
+    end
+
+    class Metric
+      include Beefcake::Message
+    end
+
+    class MetricFamily
+      include Beefcake::Message
+    end
+
+    class LabelPair
+      optional :name, :string, 1
+      optional :value, :string, 2
+    end
+
+    class Gauge
+      optional :value, :double, 1
+    end
+
+    class Counter
+      optional :value, :double, 1
+    end
+
+    class Quantile
+      optional :quantile, :double, 1
+      optional :value, :double, 2
+    end
+
+    class Summary
+      optional :sample_count, :uint64, 1
+      optional :sample_sum, :double, 2
+      repeated :quantile, Quantile, 3
+    end
+
+    class Untyped
+      optional :value, :double, 1
+    end
+
+    class Histogram
+      optional :sample_count, :uint64, 1
+      optional :sample_sum, :double, 2
+      repeated :bucket, Bucket, 3
+    end
+
+    class Bucket
+      optional :cumulative_count, :uint64, 1
+      optional :upper_bound, :double, 2
+    end
+
+    class Metric
+      repeated :label, LabelPair, 1
+      optional :gauge, Gauge, 2
+      optional :counter, Counter, 3
+      optional :summary, Summary, 4
+      optional :untyped, Untyped, 5
+      optional :histogram, Histogram, 7
+      optional :timestamp_ms, :int64, 6
+    end
+
+    class MetricFamily
+      optional :name, :string, 1
+      optional :help, :string, 2
+      optional :type, MetricType, 3
+      repeated :metric, Metric, 4
+    end
+  end
+end
diff --git a/vendor/github.com/prometheus/client_model/ruby/lib/prometheus/client/model/version.rb b/vendor/github.com/prometheus/client_model/ruby/lib/prometheus/client/model/version.rb
new file mode 100644
index 000000000..00b5e863e
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/ruby/lib/prometheus/client/model/version.rb
@@ -0,0 +1,7 @@
+module Prometheus
+  module Client
+    module Model
+      VERSION = '0.1.0'
+    end
+  end
+end
diff --git a/vendor/github.com/prometheus/client_model/ruby/prometheus-client-model.gemspec b/vendor/github.com/prometheus/client_model/ruby/prometheus-client-model.gemspec
new file mode 100644
index 000000000..438ba127e
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/ruby/prometheus-client-model.gemspec
@@ -0,0 +1,22 @@
+# coding: utf-8
+lib = File.expand_path('../lib', __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+require 'prometheus/client/model/version'
+
+Gem::Specification.new do |spec|
+  spec.name          = 'prometheus-client-model'
+  spec.version       = Prometheus::Client::Model::VERSION
+  spec.authors       = ['Tobias Schmidt']
+  spec.email         = ['tobidt@gmail.com']
+  spec.summary       = 'Data model artifacts for the Prometheus Ruby client'
+  spec.homepage      = 'https://github.com/prometheus/client_model/tree/master/ruby'
+  spec.license       = 'Apache 2.0'
+
+  spec.files         = %w[README.md LICENSE] + Dir.glob('{lib/**/*}')
+  spec.require_paths = ['lib']
+
+  spec.add_dependency 'beefcake', '>= 0.4.0'
+
+  spec.add_development_dependency 'bundler', '~> 1.3'
+  spec.add_development_dependency 'rake'
+end
diff --git a/vendor/github.com/prometheus/client_model/setup.py b/vendor/github.com/prometheus/client_model/setup.py
new file mode 100644
index 000000000..67b9f20e3
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/setup.py
@@ -0,0 +1,23 @@
+#!/usr/bin/python
+
+from setuptools import setup
+
+setup(
+    name = 'prometheus_client_model',
+    version = '0.0.1',
+    author = 'Matt T. Proud',
+    author_email = 'matt.proud@gmail.com',
+    description = 'Data model artifacts for the Prometheus client.',
+    license = 'Apache License 2.0',
+    url = 'http://github.com/prometheus/client_model',
+    packages = ['prometheus', 'prometheus/client', 'prometheus/client/model'],
+    package_dir = {'': 'python'},
+    requires = ['protobuf(==2.4.1)'],
+    platforms = 'Platform Independent',
+    classifiers = ['Development Status :: 3 - Alpha',
+                   'Intended Audience :: Developers',
+                   'Intended Audience :: System Administrators',
+                   'License :: OSI Approved :: Apache Software License',
+                   'Operating System :: OS Independent',
+                   'Topic :: Software Development :: Testing',
+                   'Topic :: System :: Monitoring'])
diff --git a/vendor/github.com/prometheus/client_model/src/main/java/io/prometheus/client/Metrics.java b/vendor/github.com/prometheus/client_model/src/main/java/io/prometheus/client/Metrics.java
new file mode 100644
index 000000000..fb6218e1e
--- /dev/null
+++ b/vendor/github.com/prometheus/client_model/src/main/java/io/prometheus/client/Metrics.java
@@ -0,0 +1,7683 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: metrics.proto
+
+package io.prometheus.client;
+
+public final class Metrics {
+  private Metrics() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+  }
+  /**
+   * Protobuf enum {@code io.prometheus.client.MetricType}
+   */
+  public enum MetricType
+      implements com.google.protobuf.ProtocolMessageEnum {
+    /**
+     * <code>COUNTER = 0;</code>
+     */
+    COUNTER(0, 0),
+    /**
+     * <code>GAUGE = 1;</code>
+     */
+    GAUGE(1, 1),
+    /**
+     * <code>SUMMARY = 2;</code>
+     */
+    SUMMARY(2, 2),
+    /**
+     * <code>UNTYPED = 3;</code>
+     */
+    UNTYPED(3, 3),
+    /**
+     * <code>HISTOGRAM = 4;</code>
+     */
+    HISTOGRAM(4, 4),
+    ;
+
+    /**
+     * <code>COUNTER = 0;</code>
+     */
+    public static final int COUNTER_VALUE = 0;
+    /**
+     * <code>GAUGE = 1;</code>
+     */
+    public static final int GAUGE_VALUE = 1;
+    /**
+     * <code>SUMMARY = 2;</code>
+     */
+    public static final int SUMMARY_VALUE = 2;
+    /**
+     * <code>UNTYPED = 3;</code>
+     */
+    public static final int UNTYPED_VALUE = 3;
+    /**
+     * <code>HISTOGRAM = 4;</code>
+     */
+    public static final int HISTOGRAM_VALUE = 4;
+
+
+    public final int getNumber() { return value; }
+
+    public static MetricType valueOf(int value) {
+      switch (value) {
+        case 0: return COUNTER;
+        case 1: return GAUGE;
+        case 2: return SUMMARY;
+        case 3: return UNTYPED;
+        case 4: return HISTOGRAM;
+        default: return null;
+      }
+    }
+
+    public static com.google.protobuf.Internal.EnumLiteMap<MetricType>
+        internalGetValueMap() {
+      return internalValueMap;
+    }
+    private static com.google.protobuf.Internal.EnumLiteMap<MetricType>
+        internalValueMap =
+          new com.google.protobuf.Internal.EnumLiteMap<MetricType>() {
+            public MetricType findValueByNumber(int number) {
+              return MetricType.valueOf(number);
+            }
+          };
+
+    public final com.google.protobuf.Descriptors.EnumValueDescriptor
+        getValueDescriptor() {
+      return getDescriptor().getValues().get(index);
+    }
+    public final com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptorForType() {
+      return getDescriptor();
+    }
+    public static final com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptor() {
+      return io.prometheus.client.Metrics.getDescriptor().getEnumTypes().get(0);
+    }
+
+    private static final MetricType[] VALUES = values();
+
+    public static MetricType valueOf(
+        com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
+      if (desc.getType() != getDescriptor()) {
+        throw new java.lang.IllegalArgumentException(
+          "EnumValueDescriptor is not for this type.");
+      }
+      return VALUES[desc.getIndex()];
+    }
+
+    private final int index;
+    private final int value;
+
+    private MetricType(int index, int value) {
+      this.index = index;
+      this.value = value;
+    }
+
+    // @@protoc_insertion_point(enum_scope:io.prometheus.client.MetricType)
+  }
+
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+
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+     * <code>optional string value = 2;</code>
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+     */
+    com.google.protobuf.ByteString
+        getValueBytes();
+  }
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+   * Protobuf type {@code io.prometheus.client.LabelPair}
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+  public static final class LabelPair extends
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+        // @@protoc_insertion_point(builder_implements:io.prometheus.client.LabelPair)
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+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
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+    /**
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+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:io.prometheus.client.Counter)
+        io.prometheus.client.Metrics.CounterOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Counter_descriptor;
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+      private Builder() {
+        maybeForceBuilderInitialization();
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+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
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+      private void maybeForceBuilderInitialization() {
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+      public Builder clear() {
+        super.clear();
+        value_ = 0D;
+        bitField0_ = (bitField0_ & ~0x00000001);
+        return this;
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+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
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+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
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+        if (!result.isInitialized()) {
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+        return result;
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+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof io.prometheus.client.Metrics.Counter) {
+          return mergeFrom((io.prometheus.client.Metrics.Counter)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
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+      public Builder mergeFrom(io.prometheus.client.Metrics.Counter other) {
+        if (other == io.prometheus.client.Metrics.Counter.getDefaultInstance()) return this;
+        if (other.hasValue()) {
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+        this.mergeUnknownFields(other.getUnknownFields());
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+      public Builder mergeFrom(
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+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        io.prometheus.client.Metrics.Counter parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (io.prometheus.client.Metrics.Counter) e.getUnfinishedMessage();
+          throw e;
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+      private double value_ ;
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+      /**
+       * <code>optional double value = 1;</code>
+       */
+      public Builder setValue(double value) {
+        bitField0_ |= 0x00000001;
+        value_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional double value = 1;</code>
+       */
+      public Builder clearValue() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        value_ = 0D;
+        onChanged();
+        return this;
+      }
+
+      // @@protoc_insertion_point(builder_scope:io.prometheus.client.Counter)
+    }
+
+    static {
+      defaultInstance = new Counter(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:io.prometheus.client.Counter)
+  }
+
+  public interface QuantileOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:io.prometheus.client.Quantile)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>optional double quantile = 1;</code>
+     */
+    boolean hasQuantile();
+    /**
+     * <code>optional double quantile = 1;</code>
+     */
+    double getQuantile();
+
+    /**
+     * <code>optional double value = 2;</code>
+     */
+    boolean hasValue();
+    /**
+     * <code>optional double value = 2;</code>
+     */
+    double getValue();
+  }
+  /**
+   * Protobuf type {@code io.prometheus.client.Quantile}
+   */
+  public static final class Quantile extends
+      com.google.protobuf.GeneratedMessage implements
+      // @@protoc_insertion_point(message_implements:io.prometheus.client.Quantile)
+      QuantileOrBuilder {
+    // Use Quantile.newBuilder() to construct.
+    private Quantile(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
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+    private Quantile(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
+
+    private static final Quantile defaultInstance;
+    public static Quantile getDefaultInstance() {
+      return defaultInstance;
+    }
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+    public Quantile getDefaultInstanceForType() {
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+    }
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+    private final com.google.protobuf.UnknownFieldSet unknownFields;
+    @java.lang.Override
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+        getUnknownFields() {
+      return this.unknownFields;
+    }
+    private Quantile(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      initFields();
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
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+      try {
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+        while (!done) {
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+          switch (tag) {
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+              done = true;
+              break;
+            default: {
+              if (!parseUnknownField(input, unknownFields,
+                                     extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+            case 9: {
+              bitField0_ |= 0x00000001;
+              quantile_ = input.readDouble();
+              break;
+            }
+            case 17: {
+              bitField0_ |= 0x00000002;
+              value_ = input.readDouble();
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e.getMessage()).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Quantile_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Quantile_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              io.prometheus.client.Metrics.Quantile.class, io.prometheus.client.Metrics.Quantile.Builder.class);
+    }
+
+    public static com.google.protobuf.Parser<Quantile> PARSER =
+        new com.google.protobuf.AbstractParser<Quantile>() {
+      public Quantile parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Quantile(input, extensionRegistry);
+      }
+    };
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Quantile> getParserForType() {
+      return PARSER;
+    }
+
+    private int bitField0_;
+    public static final int QUANTILE_FIELD_NUMBER = 1;
+    private double quantile_;
+    /**
+     * <code>optional double quantile = 1;</code>
+     */
+    public boolean hasQuantile() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>optional double quantile = 1;</code>
+     */
+    public double getQuantile() {
+      return quantile_;
+    }
+
+    public static final int VALUE_FIELD_NUMBER = 2;
+    private double value_;
+    /**
+     * <code>optional double value = 2;</code>
+     */
+    public boolean hasValue() {
+      return ((bitField0_ & 0x00000002) == 0x00000002);
+    }
+    /**
+     * <code>optional double value = 2;</code>
+     */
+    public double getValue() {
+      return value_;
+    }
+
+    private void initFields() {
+      quantile_ = 0D;
+      value_ = 0D;
+    }
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeDouble(1, quantile_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        output.writeDouble(2, value_);
+      }
+      getUnknownFields().writeTo(output);
+    }
+
+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
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+
+      size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
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+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
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+          .computeDoubleSize(2, value_);
+      }
+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    public static io.prometheus.client.Metrics.Quantile parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.prometheus.client.Metrics.Quantile parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Quantile parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.prometheus.client.Metrics.Quantile parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Quantile parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Quantile parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Quantile parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Quantile parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Quantile parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Quantile parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(io.prometheus.client.Metrics.Quantile prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code io.prometheus.client.Quantile}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:io.prometheus.client.Quantile)
+        io.prometheus.client.Metrics.QuantileOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Quantile_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Quantile_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                io.prometheus.client.Metrics.Quantile.class, io.prometheus.client.Metrics.Quantile.Builder.class);
+      }
+
+      // Construct using io.prometheus.client.Metrics.Quantile.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        quantile_ = 0D;
+        bitField0_ = (bitField0_ & ~0x00000001);
+        value_ = 0D;
+        bitField0_ = (bitField0_ & ~0x00000002);
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Quantile_descriptor;
+      }
+
+      public io.prometheus.client.Metrics.Quantile getDefaultInstanceForType() {
+        return io.prometheus.client.Metrics.Quantile.getDefaultInstance();
+      }
+
+      public io.prometheus.client.Metrics.Quantile build() {
+        io.prometheus.client.Metrics.Quantile result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public io.prometheus.client.Metrics.Quantile buildPartial() {
+        io.prometheus.client.Metrics.Quantile result = new io.prometheus.client.Metrics.Quantile(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
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+        result.quantile_ = quantile_;
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+          to_bitField0_ |= 0x00000002;
+        }
+        result.value_ = value_;
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof io.prometheus.client.Metrics.Quantile) {
+          return mergeFrom((io.prometheus.client.Metrics.Quantile)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(io.prometheus.client.Metrics.Quantile other) {
+        if (other == io.prometheus.client.Metrics.Quantile.getDefaultInstance()) return this;
+        if (other.hasQuantile()) {
+          setQuantile(other.getQuantile());
+        }
+        if (other.hasValue()) {
+          setValue(other.getValue());
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        io.prometheus.client.Metrics.Quantile parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (io.prometheus.client.Metrics.Quantile) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      private double quantile_ ;
+      /**
+       * <code>optional double quantile = 1;</code>
+       */
+      public boolean hasQuantile() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional double quantile = 1;</code>
+       */
+      public double getQuantile() {
+        return quantile_;
+      }
+      /**
+       * <code>optional double quantile = 1;</code>
+       */
+      public Builder setQuantile(double value) {
+        bitField0_ |= 0x00000001;
+        quantile_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional double quantile = 1;</code>
+       */
+      public Builder clearQuantile() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        quantile_ = 0D;
+        onChanged();
+        return this;
+      }
+
+      private double value_ ;
+      /**
+       * <code>optional double value = 2;</code>
+       */
+      public boolean hasValue() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      /**
+       * <code>optional double value = 2;</code>
+       */
+      public double getValue() {
+        return value_;
+      }
+      /**
+       * <code>optional double value = 2;</code>
+       */
+      public Builder setValue(double value) {
+        bitField0_ |= 0x00000002;
+        value_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional double value = 2;</code>
+       */
+      public Builder clearValue() {
+        bitField0_ = (bitField0_ & ~0x00000002);
+        value_ = 0D;
+        onChanged();
+        return this;
+      }
+
+      // @@protoc_insertion_point(builder_scope:io.prometheus.client.Quantile)
+    }
+
+    static {
+      defaultInstance = new Quantile(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:io.prometheus.client.Quantile)
+  }
+
+  public interface SummaryOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:io.prometheus.client.Summary)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>optional uint64 sample_count = 1;</code>
+     */
+    boolean hasSampleCount();
+    /**
+     * <code>optional uint64 sample_count = 1;</code>
+     */
+    long getSampleCount();
+
+    /**
+     * <code>optional double sample_sum = 2;</code>
+     */
+    boolean hasSampleSum();
+    /**
+     * <code>optional double sample_sum = 2;</code>
+     */
+    double getSampleSum();
+
+    /**
+     * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+     */
+    java.util.List<io.prometheus.client.Metrics.Quantile> 
+        getQuantileList();
+    /**
+     * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+     */
+    io.prometheus.client.Metrics.Quantile getQuantile(int index);
+    /**
+     * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+     */
+    int getQuantileCount();
+    /**
+     * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+     */
+    java.util.List<? extends io.prometheus.client.Metrics.QuantileOrBuilder> 
+        getQuantileOrBuilderList();
+    /**
+     * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+     */
+    io.prometheus.client.Metrics.QuantileOrBuilder getQuantileOrBuilder(
+        int index);
+  }
+  /**
+   * Protobuf type {@code io.prometheus.client.Summary}
+   */
+  public static final class Summary extends
+      com.google.protobuf.GeneratedMessage implements
+      // @@protoc_insertion_point(message_implements:io.prometheus.client.Summary)
+      SummaryOrBuilder {
+    // Use Summary.newBuilder() to construct.
+    private Summary(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
+    }
+    private Summary(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
+
+    private static final Summary defaultInstance;
+    public static Summary getDefaultInstance() {
+      return defaultInstance;
+    }
+
+    public Summary getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+
+    private final com.google.protobuf.UnknownFieldSet unknownFields;
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+        getUnknownFields() {
+      return this.unknownFields;
+    }
+    private Summary(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      initFields();
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
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+      try {
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+        while (!done) {
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+          switch (tag) {
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+              break;
+            default: {
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+                                     extensionRegistry, tag)) {
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+     */
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+    /**
+     * <code>optional double sample_sum = 2;</code>
+     */
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+    }
+
+    public static final int QUANTILE_FIELD_NUMBER = 3;
+    private java.util.List<io.prometheus.client.Metrics.Quantile> quantile_;
+    /**
+     * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+     */
+    public java.util.List<io.prometheus.client.Metrics.Quantile> getQuantileList() {
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+    /**
+     * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+     */
+    public java.util.List<? extends io.prometheus.client.Metrics.QuantileOrBuilder> 
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+      return quantile_;
+    }
+    /**
+     * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+     */
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+    /**
+     * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+     */
+    public io.prometheus.client.Metrics.Quantile getQuantile(int index) {
+      return quantile_.get(index);
+    }
+    /**
+     * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+     */
+    public io.prometheus.client.Metrics.QuantileOrBuilder getQuantileOrBuilder(
+        int index) {
+      return quantile_.get(index);
+    }
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+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    public static io.prometheus.client.Metrics.Summary parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.prometheus.client.Metrics.Summary parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Summary parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.prometheus.client.Metrics.Summary parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Summary parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Summary parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Summary parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Summary parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Summary parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Summary parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(io.prometheus.client.Metrics.Summary prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code io.prometheus.client.Summary}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:io.prometheus.client.Summary)
+        io.prometheus.client.Metrics.SummaryOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Summary_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Summary_fieldAccessorTable
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+                io.prometheus.client.Metrics.Summary.class, io.prometheus.client.Metrics.Summary.Builder.class);
+      }
+
+      // Construct using io.prometheus.client.Metrics.Summary.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+          getQuantileFieldBuilder();
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        sampleCount_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000001);
+        sampleSum_ = 0D;
+        bitField0_ = (bitField0_ & ~0x00000002);
+        if (quantileBuilder_ == null) {
+          quantile_ = java.util.Collections.emptyList();
+          bitField0_ = (bitField0_ & ~0x00000004);
+        } else {
+          quantileBuilder_.clear();
+        }
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Summary_descriptor;
+      }
+
+      public io.prometheus.client.Metrics.Summary getDefaultInstanceForType() {
+        return io.prometheus.client.Metrics.Summary.getDefaultInstance();
+      }
+
+      public io.prometheus.client.Metrics.Summary build() {
+        io.prometheus.client.Metrics.Summary result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public io.prometheus.client.Metrics.Summary buildPartial() {
+        io.prometheus.client.Metrics.Summary result = new io.prometheus.client.Metrics.Summary(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
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+        result.sampleCount_ = sampleCount_;
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
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+        result.sampleSum_ = sampleSum_;
+        if (quantileBuilder_ == null) {
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+            bitField0_ = (bitField0_ & ~0x00000004);
+          }
+          result.quantile_ = quantile_;
+        } else {
+          result.quantile_ = quantileBuilder_.build();
+        }
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof io.prometheus.client.Metrics.Summary) {
+          return mergeFrom((io.prometheus.client.Metrics.Summary)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(io.prometheus.client.Metrics.Summary other) {
+        if (other == io.prometheus.client.Metrics.Summary.getDefaultInstance()) return this;
+        if (other.hasSampleCount()) {
+          setSampleCount(other.getSampleCount());
+        }
+        if (other.hasSampleSum()) {
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+              bitField0_ = (bitField0_ & ~0x00000004);
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+              quantile_.addAll(other.quantile_);
+            }
+            onChanged();
+          }
+        } else {
+          if (!other.quantile_.isEmpty()) {
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+              quantile_ = other.quantile_;
+              bitField0_ = (bitField0_ & ~0x00000004);
+              quantileBuilder_ = 
+                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
+                   getQuantileFieldBuilder() : null;
+            } else {
+              quantileBuilder_.addAllMessages(other.quantile_);
+            }
+          }
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        io.prometheus.client.Metrics.Summary parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (io.prometheus.client.Metrics.Summary) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      private long sampleCount_ ;
+      /**
+       * <code>optional uint64 sample_count = 1;</code>
+       */
+      public boolean hasSampleCount() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional uint64 sample_count = 1;</code>
+       */
+      public long getSampleCount() {
+        return sampleCount_;
+      }
+      /**
+       * <code>optional uint64 sample_count = 1;</code>
+       */
+      public Builder setSampleCount(long value) {
+        bitField0_ |= 0x00000001;
+        sampleCount_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional uint64 sample_count = 1;</code>
+       */
+      public Builder clearSampleCount() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        sampleCount_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      private double sampleSum_ ;
+      /**
+       * <code>optional double sample_sum = 2;</code>
+       */
+      public boolean hasSampleSum() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      /**
+       * <code>optional double sample_sum = 2;</code>
+       */
+      public double getSampleSum() {
+        return sampleSum_;
+      }
+      /**
+       * <code>optional double sample_sum = 2;</code>
+       */
+      public Builder setSampleSum(double value) {
+        bitField0_ |= 0x00000002;
+        sampleSum_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional double sample_sum = 2;</code>
+       */
+      public Builder clearSampleSum() {
+        bitField0_ = (bitField0_ & ~0x00000002);
+        sampleSum_ = 0D;
+        onChanged();
+        return this;
+      }
+
+      private java.util.List<io.prometheus.client.Metrics.Quantile> quantile_ =
+        java.util.Collections.emptyList();
+      private void ensureQuantileIsMutable() {
+        if (!((bitField0_ & 0x00000004) == 0x00000004)) {
+          quantile_ = new java.util.ArrayList<io.prometheus.client.Metrics.Quantile>(quantile_);
+          bitField0_ |= 0x00000004;
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+          io.prometheus.client.Metrics.Quantile, io.prometheus.client.Metrics.Quantile.Builder, io.prometheus.client.Metrics.QuantileOrBuilder> quantileBuilder_;
+
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public java.util.List<io.prometheus.client.Metrics.Quantile> getQuantileList() {
+        if (quantileBuilder_ == null) {
+          return java.util.Collections.unmodifiableList(quantile_);
+        } else {
+          return quantileBuilder_.getMessageList();
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public int getQuantileCount() {
+        if (quantileBuilder_ == null) {
+          return quantile_.size();
+        } else {
+          return quantileBuilder_.getCount();
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public io.prometheus.client.Metrics.Quantile getQuantile(int index) {
+        if (quantileBuilder_ == null) {
+          return quantile_.get(index);
+        } else {
+          return quantileBuilder_.getMessage(index);
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public Builder setQuantile(
+          int index, io.prometheus.client.Metrics.Quantile value) {
+        if (quantileBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureQuantileIsMutable();
+          quantile_.set(index, value);
+          onChanged();
+        } else {
+          quantileBuilder_.setMessage(index, value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public Builder setQuantile(
+          int index, io.prometheus.client.Metrics.Quantile.Builder builderForValue) {
+        if (quantileBuilder_ == null) {
+          ensureQuantileIsMutable();
+          quantile_.set(index, builderForValue.build());
+          onChanged();
+        } else {
+          quantileBuilder_.setMessage(index, builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public Builder addQuantile(io.prometheus.client.Metrics.Quantile value) {
+        if (quantileBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureQuantileIsMutable();
+          quantile_.add(value);
+          onChanged();
+        } else {
+          quantileBuilder_.addMessage(value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public Builder addQuantile(
+          int index, io.prometheus.client.Metrics.Quantile value) {
+        if (quantileBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureQuantileIsMutable();
+          quantile_.add(index, value);
+          onChanged();
+        } else {
+          quantileBuilder_.addMessage(index, value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public Builder addQuantile(
+          io.prometheus.client.Metrics.Quantile.Builder builderForValue) {
+        if (quantileBuilder_ == null) {
+          ensureQuantileIsMutable();
+          quantile_.add(builderForValue.build());
+          onChanged();
+        } else {
+          quantileBuilder_.addMessage(builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public Builder addQuantile(
+          int index, io.prometheus.client.Metrics.Quantile.Builder builderForValue) {
+        if (quantileBuilder_ == null) {
+          ensureQuantileIsMutable();
+          quantile_.add(index, builderForValue.build());
+          onChanged();
+        } else {
+          quantileBuilder_.addMessage(index, builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public Builder addAllQuantile(
+          java.lang.Iterable<? extends io.prometheus.client.Metrics.Quantile> values) {
+        if (quantileBuilder_ == null) {
+          ensureQuantileIsMutable();
+          com.google.protobuf.AbstractMessageLite.Builder.addAll(
+              values, quantile_);
+          onChanged();
+        } else {
+          quantileBuilder_.addAllMessages(values);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public Builder clearQuantile() {
+        if (quantileBuilder_ == null) {
+          quantile_ = java.util.Collections.emptyList();
+          bitField0_ = (bitField0_ & ~0x00000004);
+          onChanged();
+        } else {
+          quantileBuilder_.clear();
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public Builder removeQuantile(int index) {
+        if (quantileBuilder_ == null) {
+          ensureQuantileIsMutable();
+          quantile_.remove(index);
+          onChanged();
+        } else {
+          quantileBuilder_.remove(index);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public io.prometheus.client.Metrics.Quantile.Builder getQuantileBuilder(
+          int index) {
+        return getQuantileFieldBuilder().getBuilder(index);
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public io.prometheus.client.Metrics.QuantileOrBuilder getQuantileOrBuilder(
+          int index) {
+        if (quantileBuilder_ == null) {
+          return quantile_.get(index);  } else {
+          return quantileBuilder_.getMessageOrBuilder(index);
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public java.util.List<? extends io.prometheus.client.Metrics.QuantileOrBuilder> 
+           getQuantileOrBuilderList() {
+        if (quantileBuilder_ != null) {
+          return quantileBuilder_.getMessageOrBuilderList();
+        } else {
+          return java.util.Collections.unmodifiableList(quantile_);
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
+       */
+      public io.prometheus.client.Metrics.Quantile.Builder addQuantileBuilder() {
+        return getQuantileFieldBuilder().addBuilder(
+            io.prometheus.client.Metrics.Quantile.getDefaultInstance());
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Quantile quantile = 3;</code>
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+      // @@protoc_insertion_point(interface_extends:io.prometheus.client.Histogram)
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+    /**
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+
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+     *
+     * <pre>
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+        getBucketList();
+    /**
+     * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+     *
+     * <pre>
+     * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+     * </pre>
+     */
+    io.prometheus.client.Metrics.Bucket getBucket(int index);
+    /**
+     * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+     *
+     * <pre>
+     * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+     * </pre>
+     */
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+    /**
+     * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+     *
+     * <pre>
+     * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+     * </pre>
+     */
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+        getBucketOrBuilderList();
+    /**
+     * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+     *
+     * <pre>
+     * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+     * </pre>
+     */
+    io.prometheus.client.Metrics.BucketOrBuilder getBucketOrBuilder(
+        int index);
+  }
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+      // @@protoc_insertion_point(message_implements:io.prometheus.client.Histogram)
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+    /**
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+     * <pre>
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+    }
+    /**
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+     * <pre>
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+     */
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+    }
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+     *
+     * <pre>
+     * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+     * </pre>
+     */
+    public io.prometheus.client.Metrics.Bucket getBucket(int index) {
+      return bucket_.get(index);
+    }
+    /**
+     * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+     *
+     * <pre>
+     * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+     * </pre>
+     */
+    public io.prometheus.client.Metrics.BucketOrBuilder getBucketOrBuilder(
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+    }
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+      if (isInitialized == 0) return false;
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+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeUInt64(1, sampleCount_);
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+      for (int i = 0; i < bucket_.size(); i++) {
+        output.writeMessage(3, bucket_.get(i));
+      }
+      getUnknownFields().writeTo(output);
+    }
+
+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
+      int size = memoizedSerializedSize;
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+
+      size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
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+          .computeUInt64Size(1, sampleCount_);
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+          .computeDoubleSize(2, sampleSum_);
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+      for (int i = 0; i < bucket_.size(); i++) {
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+          .computeMessageSize(3, bucket_.get(i));
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+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    public static io.prometheus.client.Metrics.Histogram parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.prometheus.client.Metrics.Histogram parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Histogram parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.prometheus.client.Metrics.Histogram parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Histogram parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Histogram parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Histogram parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Histogram parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Histogram parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Histogram parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(io.prometheus.client.Metrics.Histogram prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code io.prometheus.client.Histogram}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:io.prometheus.client.Histogram)
+        io.prometheus.client.Metrics.HistogramOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Histogram_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Histogram_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                io.prometheus.client.Metrics.Histogram.class, io.prometheus.client.Metrics.Histogram.Builder.class);
+      }
+
+      // Construct using io.prometheus.client.Metrics.Histogram.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+          getBucketFieldBuilder();
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        sampleCount_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000001);
+        sampleSum_ = 0D;
+        bitField0_ = (bitField0_ & ~0x00000002);
+        if (bucketBuilder_ == null) {
+          bucket_ = java.util.Collections.emptyList();
+          bitField0_ = (bitField0_ & ~0x00000004);
+        } else {
+          bucketBuilder_.clear();
+        }
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Histogram_descriptor;
+      }
+
+      public io.prometheus.client.Metrics.Histogram getDefaultInstanceForType() {
+        return io.prometheus.client.Metrics.Histogram.getDefaultInstance();
+      }
+
+      public io.prometheus.client.Metrics.Histogram build() {
+        io.prometheus.client.Metrics.Histogram result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public io.prometheus.client.Metrics.Histogram buildPartial() {
+        io.prometheus.client.Metrics.Histogram result = new io.prometheus.client.Metrics.Histogram(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        result.sampleCount_ = sampleCount_;
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+          to_bitField0_ |= 0x00000002;
+        }
+        result.sampleSum_ = sampleSum_;
+        if (bucketBuilder_ == null) {
+          if (((bitField0_ & 0x00000004) == 0x00000004)) {
+            bucket_ = java.util.Collections.unmodifiableList(bucket_);
+            bitField0_ = (bitField0_ & ~0x00000004);
+          }
+          result.bucket_ = bucket_;
+        } else {
+          result.bucket_ = bucketBuilder_.build();
+        }
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof io.prometheus.client.Metrics.Histogram) {
+          return mergeFrom((io.prometheus.client.Metrics.Histogram)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(io.prometheus.client.Metrics.Histogram other) {
+        if (other == io.prometheus.client.Metrics.Histogram.getDefaultInstance()) return this;
+        if (other.hasSampleCount()) {
+          setSampleCount(other.getSampleCount());
+        }
+        if (other.hasSampleSum()) {
+          setSampleSum(other.getSampleSum());
+        }
+        if (bucketBuilder_ == null) {
+          if (!other.bucket_.isEmpty()) {
+            if (bucket_.isEmpty()) {
+              bucket_ = other.bucket_;
+              bitField0_ = (bitField0_ & ~0x00000004);
+            } else {
+              ensureBucketIsMutable();
+              bucket_.addAll(other.bucket_);
+            }
+            onChanged();
+          }
+        } else {
+          if (!other.bucket_.isEmpty()) {
+            if (bucketBuilder_.isEmpty()) {
+              bucketBuilder_.dispose();
+              bucketBuilder_ = null;
+              bucket_ = other.bucket_;
+              bitField0_ = (bitField0_ & ~0x00000004);
+              bucketBuilder_ = 
+                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
+                   getBucketFieldBuilder() : null;
+            } else {
+              bucketBuilder_.addAllMessages(other.bucket_);
+            }
+          }
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        io.prometheus.client.Metrics.Histogram parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (io.prometheus.client.Metrics.Histogram) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      private long sampleCount_ ;
+      /**
+       * <code>optional uint64 sample_count = 1;</code>
+       */
+      public boolean hasSampleCount() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional uint64 sample_count = 1;</code>
+       */
+      public long getSampleCount() {
+        return sampleCount_;
+      }
+      /**
+       * <code>optional uint64 sample_count = 1;</code>
+       */
+      public Builder setSampleCount(long value) {
+        bitField0_ |= 0x00000001;
+        sampleCount_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional uint64 sample_count = 1;</code>
+       */
+      public Builder clearSampleCount() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        sampleCount_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      private double sampleSum_ ;
+      /**
+       * <code>optional double sample_sum = 2;</code>
+       */
+      public boolean hasSampleSum() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      /**
+       * <code>optional double sample_sum = 2;</code>
+       */
+      public double getSampleSum() {
+        return sampleSum_;
+      }
+      /**
+       * <code>optional double sample_sum = 2;</code>
+       */
+      public Builder setSampleSum(double value) {
+        bitField0_ |= 0x00000002;
+        sampleSum_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional double sample_sum = 2;</code>
+       */
+      public Builder clearSampleSum() {
+        bitField0_ = (bitField0_ & ~0x00000002);
+        sampleSum_ = 0D;
+        onChanged();
+        return this;
+      }
+
+      private java.util.List<io.prometheus.client.Metrics.Bucket> bucket_ =
+        java.util.Collections.emptyList();
+      private void ensureBucketIsMutable() {
+        if (!((bitField0_ & 0x00000004) == 0x00000004)) {
+          bucket_ = new java.util.ArrayList<io.prometheus.client.Metrics.Bucket>(bucket_);
+          bitField0_ |= 0x00000004;
+         }
+      }
+
+      private com.google.protobuf.RepeatedFieldBuilder<
+          io.prometheus.client.Metrics.Bucket, io.prometheus.client.Metrics.Bucket.Builder, io.prometheus.client.Metrics.BucketOrBuilder> bucketBuilder_;
+
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public java.util.List<io.prometheus.client.Metrics.Bucket> getBucketList() {
+        if (bucketBuilder_ == null) {
+          return java.util.Collections.unmodifiableList(bucket_);
+        } else {
+          return bucketBuilder_.getMessageList();
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public int getBucketCount() {
+        if (bucketBuilder_ == null) {
+          return bucket_.size();
+        } else {
+          return bucketBuilder_.getCount();
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public io.prometheus.client.Metrics.Bucket getBucket(int index) {
+        if (bucketBuilder_ == null) {
+          return bucket_.get(index);
+        } else {
+          return bucketBuilder_.getMessage(index);
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public Builder setBucket(
+          int index, io.prometheus.client.Metrics.Bucket value) {
+        if (bucketBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureBucketIsMutable();
+          bucket_.set(index, value);
+          onChanged();
+        } else {
+          bucketBuilder_.setMessage(index, value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public Builder setBucket(
+          int index, io.prometheus.client.Metrics.Bucket.Builder builderForValue) {
+        if (bucketBuilder_ == null) {
+          ensureBucketIsMutable();
+          bucket_.set(index, builderForValue.build());
+          onChanged();
+        } else {
+          bucketBuilder_.setMessage(index, builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public Builder addBucket(io.prometheus.client.Metrics.Bucket value) {
+        if (bucketBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureBucketIsMutable();
+          bucket_.add(value);
+          onChanged();
+        } else {
+          bucketBuilder_.addMessage(value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public Builder addBucket(
+          int index, io.prometheus.client.Metrics.Bucket value) {
+        if (bucketBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureBucketIsMutable();
+          bucket_.add(index, value);
+          onChanged();
+        } else {
+          bucketBuilder_.addMessage(index, value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public Builder addBucket(
+          io.prometheus.client.Metrics.Bucket.Builder builderForValue) {
+        if (bucketBuilder_ == null) {
+          ensureBucketIsMutable();
+          bucket_.add(builderForValue.build());
+          onChanged();
+        } else {
+          bucketBuilder_.addMessage(builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public Builder addBucket(
+          int index, io.prometheus.client.Metrics.Bucket.Builder builderForValue) {
+        if (bucketBuilder_ == null) {
+          ensureBucketIsMutable();
+          bucket_.add(index, builderForValue.build());
+          onChanged();
+        } else {
+          bucketBuilder_.addMessage(index, builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public Builder addAllBucket(
+          java.lang.Iterable<? extends io.prometheus.client.Metrics.Bucket> values) {
+        if (bucketBuilder_ == null) {
+          ensureBucketIsMutable();
+          com.google.protobuf.AbstractMessageLite.Builder.addAll(
+              values, bucket_);
+          onChanged();
+        } else {
+          bucketBuilder_.addAllMessages(values);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public Builder clearBucket() {
+        if (bucketBuilder_ == null) {
+          bucket_ = java.util.Collections.emptyList();
+          bitField0_ = (bitField0_ & ~0x00000004);
+          onChanged();
+        } else {
+          bucketBuilder_.clear();
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public Builder removeBucket(int index) {
+        if (bucketBuilder_ == null) {
+          ensureBucketIsMutable();
+          bucket_.remove(index);
+          onChanged();
+        } else {
+          bucketBuilder_.remove(index);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public io.prometheus.client.Metrics.Bucket.Builder getBucketBuilder(
+          int index) {
+        return getBucketFieldBuilder().getBuilder(index);
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public io.prometheus.client.Metrics.BucketOrBuilder getBucketOrBuilder(
+          int index) {
+        if (bucketBuilder_ == null) {
+          return bucket_.get(index);  } else {
+          return bucketBuilder_.getMessageOrBuilder(index);
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public java.util.List<? extends io.prometheus.client.Metrics.BucketOrBuilder> 
+           getBucketOrBuilderList() {
+        if (bucketBuilder_ != null) {
+          return bucketBuilder_.getMessageOrBuilderList();
+        } else {
+          return java.util.Collections.unmodifiableList(bucket_);
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public io.prometheus.client.Metrics.Bucket.Builder addBucketBuilder() {
+        return getBucketFieldBuilder().addBuilder(
+            io.prometheus.client.Metrics.Bucket.getDefaultInstance());
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public io.prometheus.client.Metrics.Bucket.Builder addBucketBuilder(
+          int index) {
+        return getBucketFieldBuilder().addBuilder(
+            index, io.prometheus.client.Metrics.Bucket.getDefaultInstance());
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Bucket bucket = 3;</code>
+       *
+       * <pre>
+       * Ordered in increasing order of upper_bound, +Inf bucket is optional.
+       * </pre>
+       */
+      public java.util.List<io.prometheus.client.Metrics.Bucket.Builder> 
+           getBucketBuilderList() {
+        return getBucketFieldBuilder().getBuilderList();
+      }
+      private com.google.protobuf.RepeatedFieldBuilder<
+          io.prometheus.client.Metrics.Bucket, io.prometheus.client.Metrics.Bucket.Builder, io.prometheus.client.Metrics.BucketOrBuilder> 
+          getBucketFieldBuilder() {
+        if (bucketBuilder_ == null) {
+          bucketBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
+              io.prometheus.client.Metrics.Bucket, io.prometheus.client.Metrics.Bucket.Builder, io.prometheus.client.Metrics.BucketOrBuilder>(
+                  bucket_,
+                  ((bitField0_ & 0x00000004) == 0x00000004),
+                  getParentForChildren(),
+                  isClean());
+          bucket_ = null;
+        }
+        return bucketBuilder_;
+      }
+
+      // @@protoc_insertion_point(builder_scope:io.prometheus.client.Histogram)
+    }
+
+    static {
+      defaultInstance = new Histogram(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:io.prometheus.client.Histogram)
+  }
+
+  public interface BucketOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:io.prometheus.client.Bucket)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>optional uint64 cumulative_count = 1;</code>
+     *
+     * <pre>
+     * Cumulative in increasing order.
+     * </pre>
+     */
+    boolean hasCumulativeCount();
+    /**
+     * <code>optional uint64 cumulative_count = 1;</code>
+     *
+     * <pre>
+     * Cumulative in increasing order.
+     * </pre>
+     */
+    long getCumulativeCount();
+
+    /**
+     * <code>optional double upper_bound = 2;</code>
+     *
+     * <pre>
+     * Inclusive.
+     * </pre>
+     */
+    boolean hasUpperBound();
+    /**
+     * <code>optional double upper_bound = 2;</code>
+     *
+     * <pre>
+     * Inclusive.
+     * </pre>
+     */
+    double getUpperBound();
+  }
+  /**
+   * Protobuf type {@code io.prometheus.client.Bucket}
+   */
+  public static final class Bucket extends
+      com.google.protobuf.GeneratedMessage implements
+      // @@protoc_insertion_point(message_implements:io.prometheus.client.Bucket)
+      BucketOrBuilder {
+    // Use Bucket.newBuilder() to construct.
+    private Bucket(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
+    }
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+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      initFields();
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+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e.getMessage()).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Bucket_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
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+        new com.google.protobuf.AbstractParser<Bucket>() {
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+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
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+    @java.lang.Override
+    public com.google.protobuf.Parser<Bucket> getParserForType() {
+      return PARSER;
+    }
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+    private int bitField0_;
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+    private long cumulativeCount_;
+    /**
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+     *
+     * <pre>
+     * Cumulative in increasing order.
+     * </pre>
+     */
+    public boolean hasCumulativeCount() {
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+    /**
+     * <code>optional uint64 cumulative_count = 1;</code>
+     *
+     * <pre>
+     * Cumulative in increasing order.
+     * </pre>
+     */
+    public long getCumulativeCount() {
+      return cumulativeCount_;
+    }
+
+    public static final int UPPER_BOUND_FIELD_NUMBER = 2;
+    private double upperBound_;
+    /**
+     * <code>optional double upper_bound = 2;</code>
+     *
+     * <pre>
+     * Inclusive.
+     * </pre>
+     */
+    public boolean hasUpperBound() {
+      return ((bitField0_ & 0x00000002) == 0x00000002);
+    }
+    /**
+     * <code>optional double upper_bound = 2;</code>
+     *
+     * <pre>
+     * Inclusive.
+     * </pre>
+     */
+    public double getUpperBound() {
+      return upperBound_;
+    }
+
+    private void initFields() {
+      cumulativeCount_ = 0L;
+      upperBound_ = 0D;
+    }
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
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+    public int getSerializedSize() {
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+      memoizedSerializedSize = size;
+      return size;
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+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    public static io.prometheus.client.Metrics.Bucket parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.prometheus.client.Metrics.Bucket parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Bucket parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.prometheus.client.Metrics.Bucket parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Bucket parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Bucket parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Bucket parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Bucket parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Bucket parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Bucket parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(io.prometheus.client.Metrics.Bucket prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code io.prometheus.client.Bucket}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:io.prometheus.client.Bucket)
+        io.prometheus.client.Metrics.BucketOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Bucket_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Bucket_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                io.prometheus.client.Metrics.Bucket.class, io.prometheus.client.Metrics.Bucket.Builder.class);
+      }
+
+      // Construct using io.prometheus.client.Metrics.Bucket.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        cumulativeCount_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000001);
+        upperBound_ = 0D;
+        bitField0_ = (bitField0_ & ~0x00000002);
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Bucket_descriptor;
+      }
+
+      public io.prometheus.client.Metrics.Bucket getDefaultInstanceForType() {
+        return io.prometheus.client.Metrics.Bucket.getDefaultInstance();
+      }
+
+      public io.prometheus.client.Metrics.Bucket build() {
+        io.prometheus.client.Metrics.Bucket result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public io.prometheus.client.Metrics.Bucket buildPartial() {
+        io.prometheus.client.Metrics.Bucket result = new io.prometheus.client.Metrics.Bucket(this);
+        int from_bitField0_ = bitField0_;
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+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
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+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
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+        }
+        result.upperBound_ = upperBound_;
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof io.prometheus.client.Metrics.Bucket) {
+          return mergeFrom((io.prometheus.client.Metrics.Bucket)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(io.prometheus.client.Metrics.Bucket other) {
+        if (other == io.prometheus.client.Metrics.Bucket.getDefaultInstance()) return this;
+        if (other.hasCumulativeCount()) {
+          setCumulativeCount(other.getCumulativeCount());
+        }
+        if (other.hasUpperBound()) {
+          setUpperBound(other.getUpperBound());
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        io.prometheus.client.Metrics.Bucket parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (io.prometheus.client.Metrics.Bucket) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
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+        }
+        return this;
+      }
+      private int bitField0_;
+
+      private long cumulativeCount_ ;
+      /**
+       * <code>optional uint64 cumulative_count = 1;</code>
+       *
+       * <pre>
+       * Cumulative in increasing order.
+       * </pre>
+       */
+      public boolean hasCumulativeCount() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional uint64 cumulative_count = 1;</code>
+       *
+       * <pre>
+       * Cumulative in increasing order.
+       * </pre>
+       */
+      public long getCumulativeCount() {
+        return cumulativeCount_;
+      }
+      /**
+       * <code>optional uint64 cumulative_count = 1;</code>
+       *
+       * <pre>
+       * Cumulative in increasing order.
+       * </pre>
+       */
+      public Builder setCumulativeCount(long value) {
+        bitField0_ |= 0x00000001;
+        cumulativeCount_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional uint64 cumulative_count = 1;</code>
+       *
+       * <pre>
+       * Cumulative in increasing order.
+       * </pre>
+       */
+      public Builder clearCumulativeCount() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        cumulativeCount_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      private double upperBound_ ;
+      /**
+       * <code>optional double upper_bound = 2;</code>
+       *
+       * <pre>
+       * Inclusive.
+       * </pre>
+       */
+      public boolean hasUpperBound() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      /**
+       * <code>optional double upper_bound = 2;</code>
+       *
+       * <pre>
+       * Inclusive.
+       * </pre>
+       */
+      public double getUpperBound() {
+        return upperBound_;
+      }
+      /**
+       * <code>optional double upper_bound = 2;</code>
+       *
+       * <pre>
+       * Inclusive.
+       * </pre>
+       */
+      public Builder setUpperBound(double value) {
+        bitField0_ |= 0x00000002;
+        upperBound_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional double upper_bound = 2;</code>
+       *
+       * <pre>
+       * Inclusive.
+       * </pre>
+       */
+      public Builder clearUpperBound() {
+        bitField0_ = (bitField0_ & ~0x00000002);
+        upperBound_ = 0D;
+        onChanged();
+        return this;
+      }
+
+      // @@protoc_insertion_point(builder_scope:io.prometheus.client.Bucket)
+    }
+
+    static {
+      defaultInstance = new Bucket(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:io.prometheus.client.Bucket)
+  }
+
+  public interface MetricOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:io.prometheus.client.Metric)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+     */
+    java.util.List<io.prometheus.client.Metrics.LabelPair> 
+        getLabelList();
+    /**
+     * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+     */
+    io.prometheus.client.Metrics.LabelPair getLabel(int index);
+    /**
+     * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+     */
+    int getLabelCount();
+    /**
+     * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+     */
+    java.util.List<? extends io.prometheus.client.Metrics.LabelPairOrBuilder> 
+        getLabelOrBuilderList();
+    /**
+     * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+     */
+    io.prometheus.client.Metrics.LabelPairOrBuilder getLabelOrBuilder(
+        int index);
+
+    /**
+     * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+     */
+    boolean hasGauge();
+    /**
+     * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+     */
+    io.prometheus.client.Metrics.Gauge getGauge();
+    /**
+     * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+     */
+    io.prometheus.client.Metrics.GaugeOrBuilder getGaugeOrBuilder();
+
+    /**
+     * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+     */
+    boolean hasCounter();
+    /**
+     * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+     */
+    io.prometheus.client.Metrics.Counter getCounter();
+    /**
+     * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+     */
+    io.prometheus.client.Metrics.CounterOrBuilder getCounterOrBuilder();
+
+    /**
+     * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+     */
+    boolean hasSummary();
+    /**
+     * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+     */
+    io.prometheus.client.Metrics.Summary getSummary();
+    /**
+     * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+     */
+    io.prometheus.client.Metrics.SummaryOrBuilder getSummaryOrBuilder();
+
+    /**
+     * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+     */
+    boolean hasUntyped();
+    /**
+     * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+     */
+    io.prometheus.client.Metrics.Untyped getUntyped();
+    /**
+     * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+     */
+    io.prometheus.client.Metrics.UntypedOrBuilder getUntypedOrBuilder();
+
+    /**
+     * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+     */
+    boolean hasHistogram();
+    /**
+     * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+     */
+    io.prometheus.client.Metrics.Histogram getHistogram();
+    /**
+     * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+     */
+    io.prometheus.client.Metrics.HistogramOrBuilder getHistogramOrBuilder();
+
+    /**
+     * <code>optional int64 timestamp_ms = 6;</code>
+     */
+    boolean hasTimestampMs();
+    /**
+     * <code>optional int64 timestamp_ms = 6;</code>
+     */
+    long getTimestampMs();
+  }
+  /**
+   * Protobuf type {@code io.prometheus.client.Metric}
+   */
+  public static final class Metric extends
+      com.google.protobuf.GeneratedMessage implements
+      // @@protoc_insertion_point(message_implements:io.prometheus.client.Metric)
+      MetricOrBuilder {
+    // Use Metric.newBuilder() to construct.
+    private Metric(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
+    }
+    private Metric(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
+
+    private static final Metric defaultInstance;
+    public static Metric getDefaultInstance() {
+      return defaultInstance;
+    }
+
+    public Metric getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+
+    private final com.google.protobuf.UnknownFieldSet unknownFields;
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+        getUnknownFields() {
+      return this.unknownFields;
+    }
+    private Metric(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      initFields();
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
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+        while (!done) {
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+          switch (tag) {
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+              break;
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+                                     extensionRegistry, tag)) {
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+              }
+              break;
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+                mutable_bitField0_ |= 0x00000001;
+              }
+              label_.add(input.readMessage(io.prometheus.client.Metrics.LabelPair.PARSER, extensionRegistry));
+              break;
+            }
+            case 18: {
+              io.prometheus.client.Metrics.Gauge.Builder subBuilder = null;
+              if (((bitField0_ & 0x00000001) == 0x00000001)) {
+                subBuilder = gauge_.toBuilder();
+              }
+              gauge_ = input.readMessage(io.prometheus.client.Metrics.Gauge.PARSER, extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(gauge_);
+                gauge_ = subBuilder.buildPartial();
+              }
+              bitField0_ |= 0x00000001;
+              break;
+            }
+            case 26: {
+              io.prometheus.client.Metrics.Counter.Builder subBuilder = null;
+              if (((bitField0_ & 0x00000002) == 0x00000002)) {
+                subBuilder = counter_.toBuilder();
+              }
+              counter_ = input.readMessage(io.prometheus.client.Metrics.Counter.PARSER, extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(counter_);
+                counter_ = subBuilder.buildPartial();
+              }
+              bitField0_ |= 0x00000002;
+              break;
+            }
+            case 34: {
+              io.prometheus.client.Metrics.Summary.Builder subBuilder = null;
+              if (((bitField0_ & 0x00000004) == 0x00000004)) {
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+              }
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+              if (subBuilder != null) {
+                subBuilder.mergeFrom(summary_);
+                summary_ = subBuilder.buildPartial();
+              }
+              bitField0_ |= 0x00000004;
+              break;
+            }
+            case 42: {
+              io.prometheus.client.Metrics.Untyped.Builder subBuilder = null;
+              if (((bitField0_ & 0x00000008) == 0x00000008)) {
+                subBuilder = untyped_.toBuilder();
+              }
+              untyped_ = input.readMessage(io.prometheus.client.Metrics.Untyped.PARSER, extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(untyped_);
+                untyped_ = subBuilder.buildPartial();
+              }
+              bitField0_ |= 0x00000008;
+              break;
+            }
+            case 48: {
+              bitField0_ |= 0x00000020;
+              timestampMs_ = input.readInt64();
+              break;
+            }
+            case 58: {
+              io.prometheus.client.Metrics.Histogram.Builder subBuilder = null;
+              if (((bitField0_ & 0x00000010) == 0x00000010)) {
+                subBuilder = histogram_.toBuilder();
+              }
+              histogram_ = input.readMessage(io.prometheus.client.Metrics.Histogram.PARSER, extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(histogram_);
+                histogram_ = subBuilder.buildPartial();
+              }
+              bitField0_ |= 0x00000010;
+              break;
+            }
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+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Metric_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
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+    }
+
+    public static com.google.protobuf.Parser<Metric> PARSER =
+        new com.google.protobuf.AbstractParser<Metric>() {
+      public Metric parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Metric(input, extensionRegistry);
+      }
+    };
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Metric> getParserForType() {
+      return PARSER;
+    }
+
+    private int bitField0_;
+    public static final int LABEL_FIELD_NUMBER = 1;
+    private java.util.List<io.prometheus.client.Metrics.LabelPair> label_;
+    /**
+     * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+     */
+    public java.util.List<io.prometheus.client.Metrics.LabelPair> getLabelList() {
+      return label_;
+    }
+    /**
+     * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+     */
+    public java.util.List<? extends io.prometheus.client.Metrics.LabelPairOrBuilder> 
+        getLabelOrBuilderList() {
+      return label_;
+    }
+    /**
+     * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+     */
+    public int getLabelCount() {
+      return label_.size();
+    }
+    /**
+     * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+     */
+    public io.prometheus.client.Metrics.LabelPair getLabel(int index) {
+      return label_.get(index);
+    }
+    /**
+     * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+     */
+    public io.prometheus.client.Metrics.LabelPairOrBuilder getLabelOrBuilder(
+        int index) {
+      return label_.get(index);
+    }
+
+    public static final int GAUGE_FIELD_NUMBER = 2;
+    private io.prometheus.client.Metrics.Gauge gauge_;
+    /**
+     * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+     */
+    public boolean hasGauge() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+     */
+    public io.prometheus.client.Metrics.Gauge getGauge() {
+      return gauge_;
+    }
+    /**
+     * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+     */
+    public io.prometheus.client.Metrics.GaugeOrBuilder getGaugeOrBuilder() {
+      return gauge_;
+    }
+
+    public static final int COUNTER_FIELD_NUMBER = 3;
+    private io.prometheus.client.Metrics.Counter counter_;
+    /**
+     * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+     */
+    public boolean hasCounter() {
+      return ((bitField0_ & 0x00000002) == 0x00000002);
+    }
+    /**
+     * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+     */
+    public io.prometheus.client.Metrics.Counter getCounter() {
+      return counter_;
+    }
+    /**
+     * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+     */
+    public io.prometheus.client.Metrics.CounterOrBuilder getCounterOrBuilder() {
+      return counter_;
+    }
+
+    public static final int SUMMARY_FIELD_NUMBER = 4;
+    private io.prometheus.client.Metrics.Summary summary_;
+    /**
+     * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+     */
+    public boolean hasSummary() {
+      return ((bitField0_ & 0x00000004) == 0x00000004);
+    }
+    /**
+     * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+     */
+    public io.prometheus.client.Metrics.Summary getSummary() {
+      return summary_;
+    }
+    /**
+     * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+     */
+    public io.prometheus.client.Metrics.SummaryOrBuilder getSummaryOrBuilder() {
+      return summary_;
+    }
+
+    public static final int UNTYPED_FIELD_NUMBER = 5;
+    private io.prometheus.client.Metrics.Untyped untyped_;
+    /**
+     * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+     */
+    public boolean hasUntyped() {
+      return ((bitField0_ & 0x00000008) == 0x00000008);
+    }
+    /**
+     * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+     */
+    public io.prometheus.client.Metrics.Untyped getUntyped() {
+      return untyped_;
+    }
+    /**
+     * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+     */
+    public io.prometheus.client.Metrics.UntypedOrBuilder getUntypedOrBuilder() {
+      return untyped_;
+    }
+
+    public static final int HISTOGRAM_FIELD_NUMBER = 7;
+    private io.prometheus.client.Metrics.Histogram histogram_;
+    /**
+     * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+     */
+    public boolean hasHistogram() {
+      return ((bitField0_ & 0x00000010) == 0x00000010);
+    }
+    /**
+     * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+     */
+    public io.prometheus.client.Metrics.Histogram getHistogram() {
+      return histogram_;
+    }
+    /**
+     * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+     */
+    public io.prometheus.client.Metrics.HistogramOrBuilder getHistogramOrBuilder() {
+      return histogram_;
+    }
+
+    public static final int TIMESTAMP_MS_FIELD_NUMBER = 6;
+    private long timestampMs_;
+    /**
+     * <code>optional int64 timestamp_ms = 6;</code>
+     */
+    public boolean hasTimestampMs() {
+      return ((bitField0_ & 0x00000020) == 0x00000020);
+    }
+    /**
+     * <code>optional int64 timestamp_ms = 6;</code>
+     */
+    public long getTimestampMs() {
+      return timestampMs_;
+    }
+
+    private void initFields() {
+      label_ = java.util.Collections.emptyList();
+      gauge_ = io.prometheus.client.Metrics.Gauge.getDefaultInstance();
+      counter_ = io.prometheus.client.Metrics.Counter.getDefaultInstance();
+      summary_ = io.prometheus.client.Metrics.Summary.getDefaultInstance();
+      untyped_ = io.prometheus.client.Metrics.Untyped.getDefaultInstance();
+      histogram_ = io.prometheus.client.Metrics.Histogram.getDefaultInstance();
+      timestampMs_ = 0L;
+    }
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+
+      memoizedIsInitialized = 1;
+      return true;
+    }
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+      for (int i = 0; i < label_.size(); i++) {
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+      }
+      if (((bitField0_ & 0x00000010) == 0x00000010)) {
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+      getUnknownFields().writeTo(output);
+    }
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+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
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+      }
+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    public static io.prometheus.client.Metrics.Metric parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.prometheus.client.Metrics.Metric parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Metric parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.prometheus.client.Metrics.Metric parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Metric parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Metric parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Metric parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Metric parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.Metric parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static io.prometheus.client.Metrics.Metric parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(io.prometheus.client.Metrics.Metric prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code io.prometheus.client.Metric}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:io.prometheus.client.Metric)
+        io.prometheus.client.Metrics.MetricOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Metric_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Metric_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                io.prometheus.client.Metrics.Metric.class, io.prometheus.client.Metrics.Metric.Builder.class);
+      }
+
+      // Construct using io.prometheus.client.Metrics.Metric.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+          getLabelFieldBuilder();
+          getGaugeFieldBuilder();
+          getCounterFieldBuilder();
+          getSummaryFieldBuilder();
+          getUntypedFieldBuilder();
+          getHistogramFieldBuilder();
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        if (labelBuilder_ == null) {
+          label_ = java.util.Collections.emptyList();
+          bitField0_ = (bitField0_ & ~0x00000001);
+        } else {
+          labelBuilder_.clear();
+        }
+        if (gaugeBuilder_ == null) {
+          gauge_ = io.prometheus.client.Metrics.Gauge.getDefaultInstance();
+        } else {
+          gaugeBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000002);
+        if (counterBuilder_ == null) {
+          counter_ = io.prometheus.client.Metrics.Counter.getDefaultInstance();
+        } else {
+          counterBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000004);
+        if (summaryBuilder_ == null) {
+          summary_ = io.prometheus.client.Metrics.Summary.getDefaultInstance();
+        } else {
+          summaryBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000008);
+        if (untypedBuilder_ == null) {
+          untyped_ = io.prometheus.client.Metrics.Untyped.getDefaultInstance();
+        } else {
+          untypedBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000010);
+        if (histogramBuilder_ == null) {
+          histogram_ = io.prometheus.client.Metrics.Histogram.getDefaultInstance();
+        } else {
+          histogramBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000020);
+        timestampMs_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000040);
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_Metric_descriptor;
+      }
+
+      public io.prometheus.client.Metrics.Metric getDefaultInstanceForType() {
+        return io.prometheus.client.Metrics.Metric.getDefaultInstance();
+      }
+
+      public io.prometheus.client.Metrics.Metric build() {
+        io.prometheus.client.Metrics.Metric result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public io.prometheus.client.Metrics.Metric buildPartial() {
+        io.prometheus.client.Metrics.Metric result = new io.prometheus.client.Metrics.Metric(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (labelBuilder_ == null) {
+          if (((bitField0_ & 0x00000001) == 0x00000001)) {
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+            bitField0_ = (bitField0_ & ~0x00000001);
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+        } else {
+          result.label_ = labelBuilder_.build();
+        }
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        if (gaugeBuilder_ == null) {
+          result.gauge_ = gauge_;
+        } else {
+          result.gauge_ = gaugeBuilder_.build();
+        }
+        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
+          to_bitField0_ |= 0x00000002;
+        }
+        if (counterBuilder_ == null) {
+          result.counter_ = counter_;
+        } else {
+          result.counter_ = counterBuilder_.build();
+        }
+        if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
+          to_bitField0_ |= 0x00000004;
+        }
+        if (summaryBuilder_ == null) {
+          result.summary_ = summary_;
+        } else {
+          result.summary_ = summaryBuilder_.build();
+        }
+        if (((from_bitField0_ & 0x00000010) == 0x00000010)) {
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+        }
+        if (untypedBuilder_ == null) {
+          result.untyped_ = untyped_;
+        } else {
+          result.untyped_ = untypedBuilder_.build();
+        }
+        if (((from_bitField0_ & 0x00000020) == 0x00000020)) {
+          to_bitField0_ |= 0x00000010;
+        }
+        if (histogramBuilder_ == null) {
+          result.histogram_ = histogram_;
+        } else {
+          result.histogram_ = histogramBuilder_.build();
+        }
+        if (((from_bitField0_ & 0x00000040) == 0x00000040)) {
+          to_bitField0_ |= 0x00000020;
+        }
+        result.timestampMs_ = timestampMs_;
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof io.prometheus.client.Metrics.Metric) {
+          return mergeFrom((io.prometheus.client.Metrics.Metric)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(io.prometheus.client.Metrics.Metric other) {
+        if (other == io.prometheus.client.Metrics.Metric.getDefaultInstance()) return this;
+        if (labelBuilder_ == null) {
+          if (!other.label_.isEmpty()) {
+            if (label_.isEmpty()) {
+              label_ = other.label_;
+              bitField0_ = (bitField0_ & ~0x00000001);
+            } else {
+              ensureLabelIsMutable();
+              label_.addAll(other.label_);
+            }
+            onChanged();
+          }
+        } else {
+          if (!other.label_.isEmpty()) {
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+              labelBuilder_.dispose();
+              labelBuilder_ = null;
+              label_ = other.label_;
+              bitField0_ = (bitField0_ & ~0x00000001);
+              labelBuilder_ = 
+                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
+                   getLabelFieldBuilder() : null;
+            } else {
+              labelBuilder_.addAllMessages(other.label_);
+            }
+          }
+        }
+        if (other.hasGauge()) {
+          mergeGauge(other.getGauge());
+        }
+        if (other.hasCounter()) {
+          mergeCounter(other.getCounter());
+        }
+        if (other.hasSummary()) {
+          mergeSummary(other.getSummary());
+        }
+        if (other.hasUntyped()) {
+          mergeUntyped(other.getUntyped());
+        }
+        if (other.hasHistogram()) {
+          mergeHistogram(other.getHistogram());
+        }
+        if (other.hasTimestampMs()) {
+          setTimestampMs(other.getTimestampMs());
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        io.prometheus.client.Metrics.Metric parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (io.prometheus.client.Metrics.Metric) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      private java.util.List<io.prometheus.client.Metrics.LabelPair> label_ =
+        java.util.Collections.emptyList();
+      private void ensureLabelIsMutable() {
+        if (!((bitField0_ & 0x00000001) == 0x00000001)) {
+          label_ = new java.util.ArrayList<io.prometheus.client.Metrics.LabelPair>(label_);
+          bitField0_ |= 0x00000001;
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+
+      private com.google.protobuf.RepeatedFieldBuilder<
+          io.prometheus.client.Metrics.LabelPair, io.prometheus.client.Metrics.LabelPair.Builder, io.prometheus.client.Metrics.LabelPairOrBuilder> labelBuilder_;
+
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public java.util.List<io.prometheus.client.Metrics.LabelPair> getLabelList() {
+        if (labelBuilder_ == null) {
+          return java.util.Collections.unmodifiableList(label_);
+        } else {
+          return labelBuilder_.getMessageList();
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public int getLabelCount() {
+        if (labelBuilder_ == null) {
+          return label_.size();
+        } else {
+          return labelBuilder_.getCount();
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public io.prometheus.client.Metrics.LabelPair getLabel(int index) {
+        if (labelBuilder_ == null) {
+          return label_.get(index);
+        } else {
+          return labelBuilder_.getMessage(index);
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public Builder setLabel(
+          int index, io.prometheus.client.Metrics.LabelPair value) {
+        if (labelBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureLabelIsMutable();
+          label_.set(index, value);
+          onChanged();
+        } else {
+          labelBuilder_.setMessage(index, value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public Builder setLabel(
+          int index, io.prometheus.client.Metrics.LabelPair.Builder builderForValue) {
+        if (labelBuilder_ == null) {
+          ensureLabelIsMutable();
+          label_.set(index, builderForValue.build());
+          onChanged();
+        } else {
+          labelBuilder_.setMessage(index, builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public Builder addLabel(io.prometheus.client.Metrics.LabelPair value) {
+        if (labelBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureLabelIsMutable();
+          label_.add(value);
+          onChanged();
+        } else {
+          labelBuilder_.addMessage(value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public Builder addLabel(
+          int index, io.prometheus.client.Metrics.LabelPair value) {
+        if (labelBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureLabelIsMutable();
+          label_.add(index, value);
+          onChanged();
+        } else {
+          labelBuilder_.addMessage(index, value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public Builder addLabel(
+          io.prometheus.client.Metrics.LabelPair.Builder builderForValue) {
+        if (labelBuilder_ == null) {
+          ensureLabelIsMutable();
+          label_.add(builderForValue.build());
+          onChanged();
+        } else {
+          labelBuilder_.addMessage(builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public Builder addLabel(
+          int index, io.prometheus.client.Metrics.LabelPair.Builder builderForValue) {
+        if (labelBuilder_ == null) {
+          ensureLabelIsMutable();
+          label_.add(index, builderForValue.build());
+          onChanged();
+        } else {
+          labelBuilder_.addMessage(index, builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public Builder addAllLabel(
+          java.lang.Iterable<? extends io.prometheus.client.Metrics.LabelPair> values) {
+        if (labelBuilder_ == null) {
+          ensureLabelIsMutable();
+          com.google.protobuf.AbstractMessageLite.Builder.addAll(
+              values, label_);
+          onChanged();
+        } else {
+          labelBuilder_.addAllMessages(values);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public Builder clearLabel() {
+        if (labelBuilder_ == null) {
+          label_ = java.util.Collections.emptyList();
+          bitField0_ = (bitField0_ & ~0x00000001);
+          onChanged();
+        } else {
+          labelBuilder_.clear();
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public Builder removeLabel(int index) {
+        if (labelBuilder_ == null) {
+          ensureLabelIsMutable();
+          label_.remove(index);
+          onChanged();
+        } else {
+          labelBuilder_.remove(index);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public io.prometheus.client.Metrics.LabelPair.Builder getLabelBuilder(
+          int index) {
+        return getLabelFieldBuilder().getBuilder(index);
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public io.prometheus.client.Metrics.LabelPairOrBuilder getLabelOrBuilder(
+          int index) {
+        if (labelBuilder_ == null) {
+          return label_.get(index);  } else {
+          return labelBuilder_.getMessageOrBuilder(index);
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public java.util.List<? extends io.prometheus.client.Metrics.LabelPairOrBuilder> 
+           getLabelOrBuilderList() {
+        if (labelBuilder_ != null) {
+          return labelBuilder_.getMessageOrBuilderList();
+        } else {
+          return java.util.Collections.unmodifiableList(label_);
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public io.prometheus.client.Metrics.LabelPair.Builder addLabelBuilder() {
+        return getLabelFieldBuilder().addBuilder(
+            io.prometheus.client.Metrics.LabelPair.getDefaultInstance());
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public io.prometheus.client.Metrics.LabelPair.Builder addLabelBuilder(
+          int index) {
+        return getLabelFieldBuilder().addBuilder(
+            index, io.prometheus.client.Metrics.LabelPair.getDefaultInstance());
+      }
+      /**
+       * <code>repeated .io.prometheus.client.LabelPair label = 1;</code>
+       */
+      public java.util.List<io.prometheus.client.Metrics.LabelPair.Builder> 
+           getLabelBuilderList() {
+        return getLabelFieldBuilder().getBuilderList();
+      }
+      private com.google.protobuf.RepeatedFieldBuilder<
+          io.prometheus.client.Metrics.LabelPair, io.prometheus.client.Metrics.LabelPair.Builder, io.prometheus.client.Metrics.LabelPairOrBuilder> 
+          getLabelFieldBuilder() {
+        if (labelBuilder_ == null) {
+          labelBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
+              io.prometheus.client.Metrics.LabelPair, io.prometheus.client.Metrics.LabelPair.Builder, io.prometheus.client.Metrics.LabelPairOrBuilder>(
+                  label_,
+                  ((bitField0_ & 0x00000001) == 0x00000001),
+                  getParentForChildren(),
+                  isClean());
+          label_ = null;
+        }
+        return labelBuilder_;
+      }
+
+      private io.prometheus.client.Metrics.Gauge gauge_ = io.prometheus.client.Metrics.Gauge.getDefaultInstance();
+      private com.google.protobuf.SingleFieldBuilder<
+          io.prometheus.client.Metrics.Gauge, io.prometheus.client.Metrics.Gauge.Builder, io.prometheus.client.Metrics.GaugeOrBuilder> gaugeBuilder_;
+      /**
+       * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+       */
+      public boolean hasGauge() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      /**
+       * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+       */
+      public io.prometheus.client.Metrics.Gauge getGauge() {
+        if (gaugeBuilder_ == null) {
+          return gauge_;
+        } else {
+          return gaugeBuilder_.getMessage();
+        }
+      }
+      /**
+       * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+       */
+      public Builder setGauge(io.prometheus.client.Metrics.Gauge value) {
+        if (gaugeBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          gauge_ = value;
+          onChanged();
+        } else {
+          gaugeBuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000002;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+       */
+      public Builder setGauge(
+          io.prometheus.client.Metrics.Gauge.Builder builderForValue) {
+        if (gaugeBuilder_ == null) {
+          gauge_ = builderForValue.build();
+          onChanged();
+        } else {
+          gaugeBuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000002;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+       */
+      public Builder mergeGauge(io.prometheus.client.Metrics.Gauge value) {
+        if (gaugeBuilder_ == null) {
+          if (((bitField0_ & 0x00000002) == 0x00000002) &&
+              gauge_ != io.prometheus.client.Metrics.Gauge.getDefaultInstance()) {
+            gauge_ =
+              io.prometheus.client.Metrics.Gauge.newBuilder(gauge_).mergeFrom(value).buildPartial();
+          } else {
+            gauge_ = value;
+          }
+          onChanged();
+        } else {
+          gaugeBuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000002;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+       */
+      public Builder clearGauge() {
+        if (gaugeBuilder_ == null) {
+          gauge_ = io.prometheus.client.Metrics.Gauge.getDefaultInstance();
+          onChanged();
+        } else {
+          gaugeBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000002);
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+       */
+      public io.prometheus.client.Metrics.Gauge.Builder getGaugeBuilder() {
+        bitField0_ |= 0x00000002;
+        onChanged();
+        return getGaugeFieldBuilder().getBuilder();
+      }
+      /**
+       * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+       */
+      public io.prometheus.client.Metrics.GaugeOrBuilder getGaugeOrBuilder() {
+        if (gaugeBuilder_ != null) {
+          return gaugeBuilder_.getMessageOrBuilder();
+        } else {
+          return gauge_;
+        }
+      }
+      /**
+       * <code>optional .io.prometheus.client.Gauge gauge = 2;</code>
+       */
+      private com.google.protobuf.SingleFieldBuilder<
+          io.prometheus.client.Metrics.Gauge, io.prometheus.client.Metrics.Gauge.Builder, io.prometheus.client.Metrics.GaugeOrBuilder> 
+          getGaugeFieldBuilder() {
+        if (gaugeBuilder_ == null) {
+          gaugeBuilder_ = new com.google.protobuf.SingleFieldBuilder<
+              io.prometheus.client.Metrics.Gauge, io.prometheus.client.Metrics.Gauge.Builder, io.prometheus.client.Metrics.GaugeOrBuilder>(
+                  getGauge(),
+                  getParentForChildren(),
+                  isClean());
+          gauge_ = null;
+        }
+        return gaugeBuilder_;
+      }
+
+      private io.prometheus.client.Metrics.Counter counter_ = io.prometheus.client.Metrics.Counter.getDefaultInstance();
+      private com.google.protobuf.SingleFieldBuilder<
+          io.prometheus.client.Metrics.Counter, io.prometheus.client.Metrics.Counter.Builder, io.prometheus.client.Metrics.CounterOrBuilder> counterBuilder_;
+      /**
+       * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+       */
+      public boolean hasCounter() {
+        return ((bitField0_ & 0x00000004) == 0x00000004);
+      }
+      /**
+       * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+       */
+      public io.prometheus.client.Metrics.Counter getCounter() {
+        if (counterBuilder_ == null) {
+          return counter_;
+        } else {
+          return counterBuilder_.getMessage();
+        }
+      }
+      /**
+       * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+       */
+      public Builder setCounter(io.prometheus.client.Metrics.Counter value) {
+        if (counterBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          counter_ = value;
+          onChanged();
+        } else {
+          counterBuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000004;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+       */
+      public Builder setCounter(
+          io.prometheus.client.Metrics.Counter.Builder builderForValue) {
+        if (counterBuilder_ == null) {
+          counter_ = builderForValue.build();
+          onChanged();
+        } else {
+          counterBuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000004;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+       */
+      public Builder mergeCounter(io.prometheus.client.Metrics.Counter value) {
+        if (counterBuilder_ == null) {
+          if (((bitField0_ & 0x00000004) == 0x00000004) &&
+              counter_ != io.prometheus.client.Metrics.Counter.getDefaultInstance()) {
+            counter_ =
+              io.prometheus.client.Metrics.Counter.newBuilder(counter_).mergeFrom(value).buildPartial();
+          } else {
+            counter_ = value;
+          }
+          onChanged();
+        } else {
+          counterBuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000004;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+       */
+      public Builder clearCounter() {
+        if (counterBuilder_ == null) {
+          counter_ = io.prometheus.client.Metrics.Counter.getDefaultInstance();
+          onChanged();
+        } else {
+          counterBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000004);
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+       */
+      public io.prometheus.client.Metrics.Counter.Builder getCounterBuilder() {
+        bitField0_ |= 0x00000004;
+        onChanged();
+        return getCounterFieldBuilder().getBuilder();
+      }
+      /**
+       * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+       */
+      public io.prometheus.client.Metrics.CounterOrBuilder getCounterOrBuilder() {
+        if (counterBuilder_ != null) {
+          return counterBuilder_.getMessageOrBuilder();
+        } else {
+          return counter_;
+        }
+      }
+      /**
+       * <code>optional .io.prometheus.client.Counter counter = 3;</code>
+       */
+      private com.google.protobuf.SingleFieldBuilder<
+          io.prometheus.client.Metrics.Counter, io.prometheus.client.Metrics.Counter.Builder, io.prometheus.client.Metrics.CounterOrBuilder> 
+          getCounterFieldBuilder() {
+        if (counterBuilder_ == null) {
+          counterBuilder_ = new com.google.protobuf.SingleFieldBuilder<
+              io.prometheus.client.Metrics.Counter, io.prometheus.client.Metrics.Counter.Builder, io.prometheus.client.Metrics.CounterOrBuilder>(
+                  getCounter(),
+                  getParentForChildren(),
+                  isClean());
+          counter_ = null;
+        }
+        return counterBuilder_;
+      }
+
+      private io.prometheus.client.Metrics.Summary summary_ = io.prometheus.client.Metrics.Summary.getDefaultInstance();
+      private com.google.protobuf.SingleFieldBuilder<
+          io.prometheus.client.Metrics.Summary, io.prometheus.client.Metrics.Summary.Builder, io.prometheus.client.Metrics.SummaryOrBuilder> summaryBuilder_;
+      /**
+       * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+       */
+      public boolean hasSummary() {
+        return ((bitField0_ & 0x00000008) == 0x00000008);
+      }
+      /**
+       * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+       */
+      public io.prometheus.client.Metrics.Summary getSummary() {
+        if (summaryBuilder_ == null) {
+          return summary_;
+        } else {
+          return summaryBuilder_.getMessage();
+        }
+      }
+      /**
+       * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+       */
+      public Builder setSummary(io.prometheus.client.Metrics.Summary value) {
+        if (summaryBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          summary_ = value;
+          onChanged();
+        } else {
+          summaryBuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000008;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+       */
+      public Builder setSummary(
+          io.prometheus.client.Metrics.Summary.Builder builderForValue) {
+        if (summaryBuilder_ == null) {
+          summary_ = builderForValue.build();
+          onChanged();
+        } else {
+          summaryBuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000008;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+       */
+      public Builder mergeSummary(io.prometheus.client.Metrics.Summary value) {
+        if (summaryBuilder_ == null) {
+          if (((bitField0_ & 0x00000008) == 0x00000008) &&
+              summary_ != io.prometheus.client.Metrics.Summary.getDefaultInstance()) {
+            summary_ =
+              io.prometheus.client.Metrics.Summary.newBuilder(summary_).mergeFrom(value).buildPartial();
+          } else {
+            summary_ = value;
+          }
+          onChanged();
+        } else {
+          summaryBuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000008;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+       */
+      public Builder clearSummary() {
+        if (summaryBuilder_ == null) {
+          summary_ = io.prometheus.client.Metrics.Summary.getDefaultInstance();
+          onChanged();
+        } else {
+          summaryBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000008);
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+       */
+      public io.prometheus.client.Metrics.Summary.Builder getSummaryBuilder() {
+        bitField0_ |= 0x00000008;
+        onChanged();
+        return getSummaryFieldBuilder().getBuilder();
+      }
+      /**
+       * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+       */
+      public io.prometheus.client.Metrics.SummaryOrBuilder getSummaryOrBuilder() {
+        if (summaryBuilder_ != null) {
+          return summaryBuilder_.getMessageOrBuilder();
+        } else {
+          return summary_;
+        }
+      }
+      /**
+       * <code>optional .io.prometheus.client.Summary summary = 4;</code>
+       */
+      private com.google.protobuf.SingleFieldBuilder<
+          io.prometheus.client.Metrics.Summary, io.prometheus.client.Metrics.Summary.Builder, io.prometheus.client.Metrics.SummaryOrBuilder> 
+          getSummaryFieldBuilder() {
+        if (summaryBuilder_ == null) {
+          summaryBuilder_ = new com.google.protobuf.SingleFieldBuilder<
+              io.prometheus.client.Metrics.Summary, io.prometheus.client.Metrics.Summary.Builder, io.prometheus.client.Metrics.SummaryOrBuilder>(
+                  getSummary(),
+                  getParentForChildren(),
+                  isClean());
+          summary_ = null;
+        }
+        return summaryBuilder_;
+      }
+
+      private io.prometheus.client.Metrics.Untyped untyped_ = io.prometheus.client.Metrics.Untyped.getDefaultInstance();
+      private com.google.protobuf.SingleFieldBuilder<
+          io.prometheus.client.Metrics.Untyped, io.prometheus.client.Metrics.Untyped.Builder, io.prometheus.client.Metrics.UntypedOrBuilder> untypedBuilder_;
+      /**
+       * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+       */
+      public boolean hasUntyped() {
+        return ((bitField0_ & 0x00000010) == 0x00000010);
+      }
+      /**
+       * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+       */
+      public io.prometheus.client.Metrics.Untyped getUntyped() {
+        if (untypedBuilder_ == null) {
+          return untyped_;
+        } else {
+          return untypedBuilder_.getMessage();
+        }
+      }
+      /**
+       * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+       */
+      public Builder setUntyped(io.prometheus.client.Metrics.Untyped value) {
+        if (untypedBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          untyped_ = value;
+          onChanged();
+        } else {
+          untypedBuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000010;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+       */
+      public Builder setUntyped(
+          io.prometheus.client.Metrics.Untyped.Builder builderForValue) {
+        if (untypedBuilder_ == null) {
+          untyped_ = builderForValue.build();
+          onChanged();
+        } else {
+          untypedBuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000010;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+       */
+      public Builder mergeUntyped(io.prometheus.client.Metrics.Untyped value) {
+        if (untypedBuilder_ == null) {
+          if (((bitField0_ & 0x00000010) == 0x00000010) &&
+              untyped_ != io.prometheus.client.Metrics.Untyped.getDefaultInstance()) {
+            untyped_ =
+              io.prometheus.client.Metrics.Untyped.newBuilder(untyped_).mergeFrom(value).buildPartial();
+          } else {
+            untyped_ = value;
+          }
+          onChanged();
+        } else {
+          untypedBuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000010;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+       */
+      public Builder clearUntyped() {
+        if (untypedBuilder_ == null) {
+          untyped_ = io.prometheus.client.Metrics.Untyped.getDefaultInstance();
+          onChanged();
+        } else {
+          untypedBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000010);
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+       */
+      public io.prometheus.client.Metrics.Untyped.Builder getUntypedBuilder() {
+        bitField0_ |= 0x00000010;
+        onChanged();
+        return getUntypedFieldBuilder().getBuilder();
+      }
+      /**
+       * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+       */
+      public io.prometheus.client.Metrics.UntypedOrBuilder getUntypedOrBuilder() {
+        if (untypedBuilder_ != null) {
+          return untypedBuilder_.getMessageOrBuilder();
+        } else {
+          return untyped_;
+        }
+      }
+      /**
+       * <code>optional .io.prometheus.client.Untyped untyped = 5;</code>
+       */
+      private com.google.protobuf.SingleFieldBuilder<
+          io.prometheus.client.Metrics.Untyped, io.prometheus.client.Metrics.Untyped.Builder, io.prometheus.client.Metrics.UntypedOrBuilder> 
+          getUntypedFieldBuilder() {
+        if (untypedBuilder_ == null) {
+          untypedBuilder_ = new com.google.protobuf.SingleFieldBuilder<
+              io.prometheus.client.Metrics.Untyped, io.prometheus.client.Metrics.Untyped.Builder, io.prometheus.client.Metrics.UntypedOrBuilder>(
+                  getUntyped(),
+                  getParentForChildren(),
+                  isClean());
+          untyped_ = null;
+        }
+        return untypedBuilder_;
+      }
+
+      private io.prometheus.client.Metrics.Histogram histogram_ = io.prometheus.client.Metrics.Histogram.getDefaultInstance();
+      private com.google.protobuf.SingleFieldBuilder<
+          io.prometheus.client.Metrics.Histogram, io.prometheus.client.Metrics.Histogram.Builder, io.prometheus.client.Metrics.HistogramOrBuilder> histogramBuilder_;
+      /**
+       * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+       */
+      public boolean hasHistogram() {
+        return ((bitField0_ & 0x00000020) == 0x00000020);
+      }
+      /**
+       * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+       */
+      public io.prometheus.client.Metrics.Histogram getHistogram() {
+        if (histogramBuilder_ == null) {
+          return histogram_;
+        } else {
+          return histogramBuilder_.getMessage();
+        }
+      }
+      /**
+       * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+       */
+      public Builder setHistogram(io.prometheus.client.Metrics.Histogram value) {
+        if (histogramBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          histogram_ = value;
+          onChanged();
+        } else {
+          histogramBuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000020;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+       */
+      public Builder setHistogram(
+          io.prometheus.client.Metrics.Histogram.Builder builderForValue) {
+        if (histogramBuilder_ == null) {
+          histogram_ = builderForValue.build();
+          onChanged();
+        } else {
+          histogramBuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000020;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+       */
+      public Builder mergeHistogram(io.prometheus.client.Metrics.Histogram value) {
+        if (histogramBuilder_ == null) {
+          if (((bitField0_ & 0x00000020) == 0x00000020) &&
+              histogram_ != io.prometheus.client.Metrics.Histogram.getDefaultInstance()) {
+            histogram_ =
+              io.prometheus.client.Metrics.Histogram.newBuilder(histogram_).mergeFrom(value).buildPartial();
+          } else {
+            histogram_ = value;
+          }
+          onChanged();
+        } else {
+          histogramBuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000020;
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+       */
+      public Builder clearHistogram() {
+        if (histogramBuilder_ == null) {
+          histogram_ = io.prometheus.client.Metrics.Histogram.getDefaultInstance();
+          onChanged();
+        } else {
+          histogramBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000020);
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+       */
+      public io.prometheus.client.Metrics.Histogram.Builder getHistogramBuilder() {
+        bitField0_ |= 0x00000020;
+        onChanged();
+        return getHistogramFieldBuilder().getBuilder();
+      }
+      /**
+       * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+       */
+      public io.prometheus.client.Metrics.HistogramOrBuilder getHistogramOrBuilder() {
+        if (histogramBuilder_ != null) {
+          return histogramBuilder_.getMessageOrBuilder();
+        } else {
+          return histogram_;
+        }
+      }
+      /**
+       * <code>optional .io.prometheus.client.Histogram histogram = 7;</code>
+       */
+      private com.google.protobuf.SingleFieldBuilder<
+          io.prometheus.client.Metrics.Histogram, io.prometheus.client.Metrics.Histogram.Builder, io.prometheus.client.Metrics.HistogramOrBuilder> 
+          getHistogramFieldBuilder() {
+        if (histogramBuilder_ == null) {
+          histogramBuilder_ = new com.google.protobuf.SingleFieldBuilder<
+              io.prometheus.client.Metrics.Histogram, io.prometheus.client.Metrics.Histogram.Builder, io.prometheus.client.Metrics.HistogramOrBuilder>(
+                  getHistogram(),
+                  getParentForChildren(),
+                  isClean());
+          histogram_ = null;
+        }
+        return histogramBuilder_;
+      }
+
+      private long timestampMs_ ;
+      /**
+       * <code>optional int64 timestamp_ms = 6;</code>
+       */
+      public boolean hasTimestampMs() {
+        return ((bitField0_ & 0x00000040) == 0x00000040);
+      }
+      /**
+       * <code>optional int64 timestamp_ms = 6;</code>
+       */
+      public long getTimestampMs() {
+        return timestampMs_;
+      }
+      /**
+       * <code>optional int64 timestamp_ms = 6;</code>
+       */
+      public Builder setTimestampMs(long value) {
+        bitField0_ |= 0x00000040;
+        timestampMs_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional int64 timestamp_ms = 6;</code>
+       */
+      public Builder clearTimestampMs() {
+        bitField0_ = (bitField0_ & ~0x00000040);
+        timestampMs_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      // @@protoc_insertion_point(builder_scope:io.prometheus.client.Metric)
+    }
+
+    static {
+      defaultInstance = new Metric(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:io.prometheus.client.Metric)
+  }
+
+  public interface MetricFamilyOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:io.prometheus.client.MetricFamily)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>optional string name = 1;</code>
+     */
+    boolean hasName();
+    /**
+     * <code>optional string name = 1;</code>
+     */
+    java.lang.String getName();
+    /**
+     * <code>optional string name = 1;</code>
+     */
+    com.google.protobuf.ByteString
+        getNameBytes();
+
+    /**
+     * <code>optional string help = 2;</code>
+     */
+    boolean hasHelp();
+    /**
+     * <code>optional string help = 2;</code>
+     */
+    java.lang.String getHelp();
+    /**
+     * <code>optional string help = 2;</code>
+     */
+    com.google.protobuf.ByteString
+        getHelpBytes();
+
+    /**
+     * <code>optional .io.prometheus.client.MetricType type = 3;</code>
+     */
+    boolean hasType();
+    /**
+     * <code>optional .io.prometheus.client.MetricType type = 3;</code>
+     */
+    io.prometheus.client.Metrics.MetricType getType();
+
+    /**
+     * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+     */
+    java.util.List<io.prometheus.client.Metrics.Metric> 
+        getMetricList();
+    /**
+     * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+     */
+    io.prometheus.client.Metrics.Metric getMetric(int index);
+    /**
+     * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+     */
+    int getMetricCount();
+    /**
+     * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+     */
+    java.util.List<? extends io.prometheus.client.Metrics.MetricOrBuilder> 
+        getMetricOrBuilderList();
+    /**
+     * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+     */
+    io.prometheus.client.Metrics.MetricOrBuilder getMetricOrBuilder(
+        int index);
+  }
+  /**
+   * Protobuf type {@code io.prometheus.client.MetricFamily}
+   */
+  public static final class MetricFamily extends
+      com.google.protobuf.GeneratedMessage implements
+      // @@protoc_insertion_point(message_implements:io.prometheus.client.MetricFamily)
+      MetricFamilyOrBuilder {
+    // Use MetricFamily.newBuilder() to construct.
+    private MetricFamily(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
+    }
+    private MetricFamily(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
+
+    private static final MetricFamily defaultInstance;
+    public static MetricFamily getDefaultInstance() {
+      return defaultInstance;
+    }
+
+    public MetricFamily getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+
+    private final com.google.protobuf.UnknownFieldSet unknownFields;
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+        getUnknownFields() {
+      return this.unknownFields;
+    }
+    private MetricFamily(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      initFields();
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            default: {
+              if (!parseUnknownField(input, unknownFields,
+                                     extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+            case 10: {
+              com.google.protobuf.ByteString bs = input.readBytes();
+              bitField0_ |= 0x00000001;
+              name_ = bs;
+              break;
+            }
+            case 18: {
+              com.google.protobuf.ByteString bs = input.readBytes();
+              bitField0_ |= 0x00000002;
+              help_ = bs;
+              break;
+            }
+            case 24: {
+              int rawValue = input.readEnum();
+              io.prometheus.client.Metrics.MetricType value = io.prometheus.client.Metrics.MetricType.valueOf(rawValue);
+              if (value == null) {
+                unknownFields.mergeVarintField(3, rawValue);
+              } else {
+                bitField0_ |= 0x00000004;
+                type_ = value;
+              }
+              break;
+            }
+            case 34: {
+              if (!((mutable_bitField0_ & 0x00000008) == 0x00000008)) {
+                metric_ = new java.util.ArrayList<io.prometheus.client.Metrics.Metric>();
+                mutable_bitField0_ |= 0x00000008;
+              }
+              metric_.add(input.readMessage(io.prometheus.client.Metrics.Metric.PARSER, extensionRegistry));
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e.getMessage()).setUnfinishedMessage(this);
+      } finally {
+        if (((mutable_bitField0_ & 0x00000008) == 0x00000008)) {
+          metric_ = java.util.Collections.unmodifiableList(metric_);
+        }
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return io.prometheus.client.Metrics.internal_static_io_prometheus_client_MetricFamily_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return io.prometheus.client.Metrics.internal_static_io_prometheus_client_MetricFamily_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              io.prometheus.client.Metrics.MetricFamily.class, io.prometheus.client.Metrics.MetricFamily.Builder.class);
+    }
+
+    public static com.google.protobuf.Parser<MetricFamily> PARSER =
+        new com.google.protobuf.AbstractParser<MetricFamily>() {
+      public MetricFamily parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new MetricFamily(input, extensionRegistry);
+      }
+    };
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<MetricFamily> getParserForType() {
+      return PARSER;
+    }
+
+    private int bitField0_;
+    public static final int NAME_FIELD_NUMBER = 1;
+    private java.lang.Object name_;
+    /**
+     * <code>optional string name = 1;</code>
+     */
+    public boolean hasName() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>optional string name = 1;</code>
+     */
+    public java.lang.String getName() {
+      java.lang.Object ref = name_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        if (bs.isValidUtf8()) {
+          name_ = s;
+        }
+        return s;
+      }
+    }
+    /**
+     * <code>optional string name = 1;</code>
+     */
+    public com.google.protobuf.ByteString
+        getNameBytes() {
+      java.lang.Object ref = name_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        name_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int HELP_FIELD_NUMBER = 2;
+    private java.lang.Object help_;
+    /**
+     * <code>optional string help = 2;</code>
+     */
+    public boolean hasHelp() {
+      return ((bitField0_ & 0x00000002) == 0x00000002);
+    }
+    /**
+     * <code>optional string help = 2;</code>
+     */
+    public java.lang.String getHelp() {
+      java.lang.Object ref = help_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        if (bs.isValidUtf8()) {
+          help_ = s;
+        }
+        return s;
+      }
+    }
+    /**
+     * <code>optional string help = 2;</code>
+     */
+    public com.google.protobuf.ByteString
+        getHelpBytes() {
+      java.lang.Object ref = help_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        help_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int TYPE_FIELD_NUMBER = 3;
+    private io.prometheus.client.Metrics.MetricType type_;
+    /**
+     * <code>optional .io.prometheus.client.MetricType type = 3;</code>
+     */
+    public boolean hasType() {
+      return ((bitField0_ & 0x00000004) == 0x00000004);
+    }
+    /**
+     * <code>optional .io.prometheus.client.MetricType type = 3;</code>
+     */
+    public io.prometheus.client.Metrics.MetricType getType() {
+      return type_;
+    }
+
+    public static final int METRIC_FIELD_NUMBER = 4;
+    private java.util.List<io.prometheus.client.Metrics.Metric> metric_;
+    /**
+     * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+     */
+    public java.util.List<io.prometheus.client.Metrics.Metric> getMetricList() {
+      return metric_;
+    }
+    /**
+     * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+     */
+    public java.util.List<? extends io.prometheus.client.Metrics.MetricOrBuilder> 
+        getMetricOrBuilderList() {
+      return metric_;
+    }
+    /**
+     * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+     */
+    public int getMetricCount() {
+      return metric_.size();
+    }
+    /**
+     * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+     */
+    public io.prometheus.client.Metrics.Metric getMetric(int index) {
+      return metric_.get(index);
+    }
+    /**
+     * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+     */
+    public io.prometheus.client.Metrics.MetricOrBuilder getMetricOrBuilder(
+        int index) {
+      return metric_.get(index);
+    }
+
+    private void initFields() {
+      name_ = "";
+      help_ = "";
+      type_ = io.prometheus.client.Metrics.MetricType.COUNTER;
+      metric_ = java.util.Collections.emptyList();
+    }
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeBytes(1, getNameBytes());
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        output.writeBytes(2, getHelpBytes());
+      }
+      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+        output.writeEnum(3, type_.getNumber());
+      }
+      for (int i = 0; i < metric_.size(); i++) {
+        output.writeMessage(4, metric_.get(i));
+      }
+      getUnknownFields().writeTo(output);
+    }
+
+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
+      int size = memoizedSerializedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(1, getNameBytes());
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(2, getHelpBytes());
+      }
+      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeEnumSize(3, type_.getNumber());
+      }
+      for (int i = 0; i < metric_.size(); i++) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeMessageSize(4, metric_.get(i));
+      }
+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    public static io.prometheus.client.Metrics.MetricFamily parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.prometheus.client.Metrics.MetricFamily parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.MetricFamily parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.prometheus.client.Metrics.MetricFamily parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.MetricFamily parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static io.prometheus.client.Metrics.MetricFamily parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.MetricFamily parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static io.prometheus.client.Metrics.MetricFamily parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static io.prometheus.client.Metrics.MetricFamily parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static io.prometheus.client.Metrics.MetricFamily parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(io.prometheus.client.Metrics.MetricFamily prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code io.prometheus.client.MetricFamily}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:io.prometheus.client.MetricFamily)
+        io.prometheus.client.Metrics.MetricFamilyOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_MetricFamily_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_MetricFamily_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                io.prometheus.client.Metrics.MetricFamily.class, io.prometheus.client.Metrics.MetricFamily.Builder.class);
+      }
+
+      // Construct using io.prometheus.client.Metrics.MetricFamily.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+          getMetricFieldBuilder();
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        name_ = "";
+        bitField0_ = (bitField0_ & ~0x00000001);
+        help_ = "";
+        bitField0_ = (bitField0_ & ~0x00000002);
+        type_ = io.prometheus.client.Metrics.MetricType.COUNTER;
+        bitField0_ = (bitField0_ & ~0x00000004);
+        if (metricBuilder_ == null) {
+          metric_ = java.util.Collections.emptyList();
+          bitField0_ = (bitField0_ & ~0x00000008);
+        } else {
+          metricBuilder_.clear();
+        }
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return io.prometheus.client.Metrics.internal_static_io_prometheus_client_MetricFamily_descriptor;
+      }
+
+      public io.prometheus.client.Metrics.MetricFamily getDefaultInstanceForType() {
+        return io.prometheus.client.Metrics.MetricFamily.getDefaultInstance();
+      }
+
+      public io.prometheus.client.Metrics.MetricFamily build() {
+        io.prometheus.client.Metrics.MetricFamily result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public io.prometheus.client.Metrics.MetricFamily buildPartial() {
+        io.prometheus.client.Metrics.MetricFamily result = new io.prometheus.client.Metrics.MetricFamily(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        result.name_ = name_;
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+          to_bitField0_ |= 0x00000002;
+        }
+        result.help_ = help_;
+        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
+          to_bitField0_ |= 0x00000004;
+        }
+        result.type_ = type_;
+        if (metricBuilder_ == null) {
+          if (((bitField0_ & 0x00000008) == 0x00000008)) {
+            metric_ = java.util.Collections.unmodifiableList(metric_);
+            bitField0_ = (bitField0_ & ~0x00000008);
+          }
+          result.metric_ = metric_;
+        } else {
+          result.metric_ = metricBuilder_.build();
+        }
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof io.prometheus.client.Metrics.MetricFamily) {
+          return mergeFrom((io.prometheus.client.Metrics.MetricFamily)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(io.prometheus.client.Metrics.MetricFamily other) {
+        if (other == io.prometheus.client.Metrics.MetricFamily.getDefaultInstance()) return this;
+        if (other.hasName()) {
+          bitField0_ |= 0x00000001;
+          name_ = other.name_;
+          onChanged();
+        }
+        if (other.hasHelp()) {
+          bitField0_ |= 0x00000002;
+          help_ = other.help_;
+          onChanged();
+        }
+        if (other.hasType()) {
+          setType(other.getType());
+        }
+        if (metricBuilder_ == null) {
+          if (!other.metric_.isEmpty()) {
+            if (metric_.isEmpty()) {
+              metric_ = other.metric_;
+              bitField0_ = (bitField0_ & ~0x00000008);
+            } else {
+              ensureMetricIsMutable();
+              metric_.addAll(other.metric_);
+            }
+            onChanged();
+          }
+        } else {
+          if (!other.metric_.isEmpty()) {
+            if (metricBuilder_.isEmpty()) {
+              metricBuilder_.dispose();
+              metricBuilder_ = null;
+              metric_ = other.metric_;
+              bitField0_ = (bitField0_ & ~0x00000008);
+              metricBuilder_ = 
+                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
+                   getMetricFieldBuilder() : null;
+            } else {
+              metricBuilder_.addAllMessages(other.metric_);
+            }
+          }
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        io.prometheus.client.Metrics.MetricFamily parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (io.prometheus.client.Metrics.MetricFamily) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      private java.lang.Object name_ = "";
+      /**
+       * <code>optional string name = 1;</code>
+       */
+      public boolean hasName() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional string name = 1;</code>
+       */
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+        java.lang.Object ref = name_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          if (bs.isValidUtf8()) {
+            name_ = s;
+          }
+          return s;
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+        java.lang.Object ref = name_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          name_ = b;
+          return b;
+        } else {
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+        }
+      }
+      /**
+       * <code>optional string name = 1;</code>
+       */
+      public Builder setName(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  bitField0_ |= 0x00000001;
+        name_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional string name = 1;</code>
+       */
+      public Builder clearName() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        name_ = getDefaultInstance().getName();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional string name = 1;</code>
+       */
+      public Builder setNameBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  bitField0_ |= 0x00000001;
+        name_ = value;
+        onChanged();
+        return this;
+      }
+
+      private java.lang.Object help_ = "";
+      /**
+       * <code>optional string help = 2;</code>
+       */
+      public boolean hasHelp() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      /**
+       * <code>optional string help = 2;</code>
+       */
+      public java.lang.String getHelp() {
+        java.lang.Object ref = help_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          if (bs.isValidUtf8()) {
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+          return s;
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+                  (java.lang.String) ref);
+          help_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>optional string help = 2;</code>
+       */
+      public Builder setHelp(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  bitField0_ |= 0x00000002;
+        help_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional string help = 2;</code>
+       */
+      public Builder clearHelp() {
+        bitField0_ = (bitField0_ & ~0x00000002);
+        help_ = getDefaultInstance().getHelp();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional string help = 2;</code>
+       */
+      public Builder setHelpBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  bitField0_ |= 0x00000002;
+        help_ = value;
+        onChanged();
+        return this;
+      }
+
+      private io.prometheus.client.Metrics.MetricType type_ = io.prometheus.client.Metrics.MetricType.COUNTER;
+      /**
+       * <code>optional .io.prometheus.client.MetricType type = 3;</code>
+       */
+      public boolean hasType() {
+        return ((bitField0_ & 0x00000004) == 0x00000004);
+      }
+      /**
+       * <code>optional .io.prometheus.client.MetricType type = 3;</code>
+       */
+      public io.prometheus.client.Metrics.MetricType getType() {
+        return type_;
+      }
+      /**
+       * <code>optional .io.prometheus.client.MetricType type = 3;</code>
+       */
+      public Builder setType(io.prometheus.client.Metrics.MetricType value) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        bitField0_ |= 0x00000004;
+        type_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional .io.prometheus.client.MetricType type = 3;</code>
+       */
+      public Builder clearType() {
+        bitField0_ = (bitField0_ & ~0x00000004);
+        type_ = io.prometheus.client.Metrics.MetricType.COUNTER;
+        onChanged();
+        return this;
+      }
+
+      private java.util.List<io.prometheus.client.Metrics.Metric> metric_ =
+        java.util.Collections.emptyList();
+      private void ensureMetricIsMutable() {
+        if (!((bitField0_ & 0x00000008) == 0x00000008)) {
+          metric_ = new java.util.ArrayList<io.prometheus.client.Metrics.Metric>(metric_);
+          bitField0_ |= 0x00000008;
+         }
+      }
+
+      private com.google.protobuf.RepeatedFieldBuilder<
+          io.prometheus.client.Metrics.Metric, io.prometheus.client.Metrics.Metric.Builder, io.prometheus.client.Metrics.MetricOrBuilder> metricBuilder_;
+
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public java.util.List<io.prometheus.client.Metrics.Metric> getMetricList() {
+        if (metricBuilder_ == null) {
+          return java.util.Collections.unmodifiableList(metric_);
+        } else {
+          return metricBuilder_.getMessageList();
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public int getMetricCount() {
+        if (metricBuilder_ == null) {
+          return metric_.size();
+        } else {
+          return metricBuilder_.getCount();
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public io.prometheus.client.Metrics.Metric getMetric(int index) {
+        if (metricBuilder_ == null) {
+          return metric_.get(index);
+        } else {
+          return metricBuilder_.getMessage(index);
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public Builder setMetric(
+          int index, io.prometheus.client.Metrics.Metric value) {
+        if (metricBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureMetricIsMutable();
+          metric_.set(index, value);
+          onChanged();
+        } else {
+          metricBuilder_.setMessage(index, value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public Builder setMetric(
+          int index, io.prometheus.client.Metrics.Metric.Builder builderForValue) {
+        if (metricBuilder_ == null) {
+          ensureMetricIsMutable();
+          metric_.set(index, builderForValue.build());
+          onChanged();
+        } else {
+          metricBuilder_.setMessage(index, builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public Builder addMetric(io.prometheus.client.Metrics.Metric value) {
+        if (metricBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureMetricIsMutable();
+          metric_.add(value);
+          onChanged();
+        } else {
+          metricBuilder_.addMessage(value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public Builder addMetric(
+          int index, io.prometheus.client.Metrics.Metric value) {
+        if (metricBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureMetricIsMutable();
+          metric_.add(index, value);
+          onChanged();
+        } else {
+          metricBuilder_.addMessage(index, value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public Builder addMetric(
+          io.prometheus.client.Metrics.Metric.Builder builderForValue) {
+        if (metricBuilder_ == null) {
+          ensureMetricIsMutable();
+          metric_.add(builderForValue.build());
+          onChanged();
+        } else {
+          metricBuilder_.addMessage(builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public Builder addMetric(
+          int index, io.prometheus.client.Metrics.Metric.Builder builderForValue) {
+        if (metricBuilder_ == null) {
+          ensureMetricIsMutable();
+          metric_.add(index, builderForValue.build());
+          onChanged();
+        } else {
+          metricBuilder_.addMessage(index, builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public Builder addAllMetric(
+          java.lang.Iterable<? extends io.prometheus.client.Metrics.Metric> values) {
+        if (metricBuilder_ == null) {
+          ensureMetricIsMutable();
+          com.google.protobuf.AbstractMessageLite.Builder.addAll(
+              values, metric_);
+          onChanged();
+        } else {
+          metricBuilder_.addAllMessages(values);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public Builder clearMetric() {
+        if (metricBuilder_ == null) {
+          metric_ = java.util.Collections.emptyList();
+          bitField0_ = (bitField0_ & ~0x00000008);
+          onChanged();
+        } else {
+          metricBuilder_.clear();
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public Builder removeMetric(int index) {
+        if (metricBuilder_ == null) {
+          ensureMetricIsMutable();
+          metric_.remove(index);
+          onChanged();
+        } else {
+          metricBuilder_.remove(index);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public io.prometheus.client.Metrics.Metric.Builder getMetricBuilder(
+          int index) {
+        return getMetricFieldBuilder().getBuilder(index);
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public io.prometheus.client.Metrics.MetricOrBuilder getMetricOrBuilder(
+          int index) {
+        if (metricBuilder_ == null) {
+          return metric_.get(index);  } else {
+          return metricBuilder_.getMessageOrBuilder(index);
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public java.util.List<? extends io.prometheus.client.Metrics.MetricOrBuilder> 
+           getMetricOrBuilderList() {
+        if (metricBuilder_ != null) {
+          return metricBuilder_.getMessageOrBuilderList();
+        } else {
+          return java.util.Collections.unmodifiableList(metric_);
+        }
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public io.prometheus.client.Metrics.Metric.Builder addMetricBuilder() {
+        return getMetricFieldBuilder().addBuilder(
+            io.prometheus.client.Metrics.Metric.getDefaultInstance());
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public io.prometheus.client.Metrics.Metric.Builder addMetricBuilder(
+          int index) {
+        return getMetricFieldBuilder().addBuilder(
+            index, io.prometheus.client.Metrics.Metric.getDefaultInstance());
+      }
+      /**
+       * <code>repeated .io.prometheus.client.Metric metric = 4;</code>
+       */
+      public java.util.List<io.prometheus.client.Metrics.Metric.Builder> 
+           getMetricBuilderList() {
+        return getMetricFieldBuilder().getBuilderList();
+      }
+      private com.google.protobuf.RepeatedFieldBuilder<
+          io.prometheus.client.Metrics.Metric, io.prometheus.client.Metrics.Metric.Builder, io.prometheus.client.Metrics.MetricOrBuilder> 
+          getMetricFieldBuilder() {
+        if (metricBuilder_ == null) {
+          metricBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
+              io.prometheus.client.Metrics.Metric, io.prometheus.client.Metrics.Metric.Builder, io.prometheus.client.Metrics.MetricOrBuilder>(
+                  metric_,
+                  ((bitField0_ & 0x00000008) == 0x00000008),
+                  getParentForChildren(),
+                  isClean());
+          metric_ = null;
+        }
+        return metricBuilder_;
+      }
+
+      // @@protoc_insertion_point(builder_scope:io.prometheus.client.MetricFamily)
+    }
+
+    static {
+      defaultInstance = new MetricFamily(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:io.prometheus.client.MetricFamily)
+  }
+
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_io_prometheus_client_LabelPair_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_io_prometheus_client_LabelPair_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_io_prometheus_client_Gauge_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_io_prometheus_client_Gauge_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_io_prometheus_client_Counter_descriptor;
+  private static
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+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
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+  private static
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+        internal_static_io_prometheus_client_Untyped_descriptor,
+        new java.lang.String[] { "Value", });
+    internal_static_io_prometheus_client_Histogram_descriptor =
+      getDescriptor().getMessageTypes().get(6);
+    internal_static_io_prometheus_client_Histogram_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+        internal_static_io_prometheus_client_Histogram_descriptor,
+        new java.lang.String[] { "SampleCount", "SampleSum", "Bucket", });
+    internal_static_io_prometheus_client_Bucket_descriptor =
+      getDescriptor().getMessageTypes().get(7);
+    internal_static_io_prometheus_client_Bucket_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+        internal_static_io_prometheus_client_Bucket_descriptor,
+        new java.lang.String[] { "CumulativeCount", "UpperBound", });
+    internal_static_io_prometheus_client_Metric_descriptor =
+      getDescriptor().getMessageTypes().get(8);
+    internal_static_io_prometheus_client_Metric_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+        internal_static_io_prometheus_client_Metric_descriptor,
+        new java.lang.String[] { "Label", "Gauge", "Counter", "Summary", "Untyped", "Histogram", "TimestampMs", });
+    internal_static_io_prometheus_client_MetricFamily_descriptor =
+      getDescriptor().getMessageTypes().get(9);
+    internal_static_io_prometheus_client_MetricFamily_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+        internal_static_io_prometheus_client_MetricFamily_descriptor,
+        new java.lang.String[] { "Name", "Help", "Type", "Metric", });
+  }
+
+  // @@protoc_insertion_point(outer_class_scope)
+}
diff --git a/vendor/github.com/prometheus/common/.travis.yml b/vendor/github.com/prometheus/common/.travis.yml
new file mode 100644
index 000000000..69b2431c8
--- /dev/null
+++ b/vendor/github.com/prometheus/common/.travis.yml
@@ -0,0 +1,7 @@
+sudo: false
+
+language: go
+go:
+  - 1.5.4
+  - 1.6.2
+  - tip
diff --git a/vendor/github.com/prometheus/common/AUTHORS.md b/vendor/github.com/prometheus/common/AUTHORS.md
new file mode 100644
index 000000000..c63f4d395
--- /dev/null
+++ b/vendor/github.com/prometheus/common/AUTHORS.md
@@ -0,0 +1,11 @@
+Maintainers of this repository:
+
+* Fabian Reinartz <fabian@soundcloud.com>
+
+The following individuals have contributed code to this repository
+(listed in alphabetical order):
+
+* Björn Rabenstein <beorn@soundcloud.com>
+* Fabian Reinartz <fabian@soundcloud.com>
+* Julius Volz <julius.volz@gmail.com>
+* Miguel Molina <hi@mvader.me>
diff --git a/vendor/github.com/prometheus/common/CONTRIBUTING.md b/vendor/github.com/prometheus/common/CONTRIBUTING.md
new file mode 100644
index 000000000..5705f0fbe
--- /dev/null
+++ b/vendor/github.com/prometheus/common/CONTRIBUTING.md
@@ -0,0 +1,18 @@
+# Contributing
+
+Prometheus uses GitHub to manage reviews of pull requests.
+
+* If you have a trivial fix or improvement, go ahead and create a pull
+  request, addressing (with `@...`) one or more of the maintainers
+  (see [AUTHORS.md](AUTHORS.md)) in the description of the pull request.
+
+* If you plan to do something more involved, first discuss your ideas
+  on our [mailing list](https://groups.google.com/forum/?fromgroups#!forum/prometheus-developers).
+  This will avoid unnecessary work and surely give you and us a good deal
+  of inspiration.
+
+* Relevant coding style guidelines are the [Go Code Review
+  Comments](https://code.google.com/p/go-wiki/wiki/CodeReviewComments)
+  and the _Formatting and style_ section of Peter Bourgon's [Go: Best
+  Practices for Production
+  Environments](http://peter.bourgon.org/go-in-production/#formatting-and-style).
diff --git a/vendor/github.com/prometheus/common/LICENSE b/vendor/github.com/prometheus/common/LICENSE
new file mode 100644
index 000000000..261eeb9e9
--- /dev/null
+++ b/vendor/github.com/prometheus/common/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/github.com/prometheus/common/NOTICE b/vendor/github.com/prometheus/common/NOTICE
new file mode 100644
index 000000000..636a2c1a5
--- /dev/null
+++ b/vendor/github.com/prometheus/common/NOTICE
@@ -0,0 +1,5 @@
+Common libraries shared by Prometheus Go components.
+Copyright 2015 The Prometheus Authors
+
+This product includes software developed at
+SoundCloud Ltd. (http://soundcloud.com/).
diff --git a/vendor/github.com/prometheus/common/README.md b/vendor/github.com/prometheus/common/README.md
new file mode 100644
index 000000000..98f6ce24b
--- /dev/null
+++ b/vendor/github.com/prometheus/common/README.md
@@ -0,0 +1,12 @@
+# Common
+[![Build Status](https://travis-ci.org/prometheus/common.svg)](https://travis-ci.org/prometheus/common)
+
+This repository contains Go libraries that are shared across Prometheus
+components and libraries.
+
+* **config**: Common configuration structures
+* **expfmt**: Decoding and encoding for the exposition format
+* **log**: A logging wrapper around [logrus](https://github.com/Sirupsen/logrus)
+* **model**: Shared data structures
+* **route**: A routing wrapper around [httprouter](https://github.com/julienschmidt/httprouter) using `context.Context`
+* **version**: Version informations and metric
diff --git a/vendor/github.com/prometheus/common/config/config.go b/vendor/github.com/prometheus/common/config/config.go
new file mode 100644
index 000000000..33eb922ce
--- /dev/null
+++ b/vendor/github.com/prometheus/common/config/config.go
@@ -0,0 +1,30 @@
+// Copyright 2016 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package config
+
+import (
+	"fmt"
+	"strings"
+)
+
+func checkOverflow(m map[string]interface{}, ctx string) error {
+	if len(m) > 0 {
+		var keys []string
+		for k := range m {
+			keys = append(keys, k)
+		}
+		return fmt.Errorf("unknown fields in %s: %s", ctx, strings.Join(keys, ", "))
+	}
+	return nil
+}
diff --git a/vendor/github.com/prometheus/common/config/testdata/tls_config.cert_no_key.bad.yml b/vendor/github.com/prometheus/common/config/testdata/tls_config.cert_no_key.bad.yml
new file mode 100644
index 000000000..7dfdc1ead
--- /dev/null
+++ b/vendor/github.com/prometheus/common/config/testdata/tls_config.cert_no_key.bad.yml
@@ -0,0 +1 @@
+cert_file: somefile
diff --git a/vendor/github.com/prometheus/common/config/testdata/tls_config.empty.good.yml b/vendor/github.com/prometheus/common/config/testdata/tls_config.empty.good.yml
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/vendor/github.com/prometheus/common/config/testdata/tls_config.empty.good.yml
diff --git a/vendor/github.com/prometheus/common/config/testdata/tls_config.insecure.good.yml b/vendor/github.com/prometheus/common/config/testdata/tls_config.insecure.good.yml
new file mode 100644
index 000000000..d054383f1
--- /dev/null
+++ b/vendor/github.com/prometheus/common/config/testdata/tls_config.insecure.good.yml
@@ -0,0 +1 @@
+insecure_skip_verify: true
diff --git a/vendor/github.com/prometheus/common/config/testdata/tls_config.invalid_field.bad.yml b/vendor/github.com/prometheus/common/config/testdata/tls_config.invalid_field.bad.yml
new file mode 100644
index 000000000..12cbaac3b
--- /dev/null
+++ b/vendor/github.com/prometheus/common/config/testdata/tls_config.invalid_field.bad.yml
@@ -0,0 +1 @@
+something_invalid: true
diff --git a/vendor/github.com/prometheus/common/config/testdata/tls_config.key_no_cert.bad.yml b/vendor/github.com/prometheus/common/config/testdata/tls_config.key_no_cert.bad.yml
new file mode 100644
index 000000000..cec045e89
--- /dev/null
+++ b/vendor/github.com/prometheus/common/config/testdata/tls_config.key_no_cert.bad.yml
@@ -0,0 +1 @@
+key_file: somefile
diff --git a/vendor/github.com/prometheus/common/config/tls_config.go b/vendor/github.com/prometheus/common/config/tls_config.go
new file mode 100644
index 000000000..7c7e7cb02
--- /dev/null
+++ b/vendor/github.com/prometheus/common/config/tls_config.go
@@ -0,0 +1,79 @@
+// Copyright 2016 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package config
+
+import (
+	"crypto/tls"
+	"crypto/x509"
+	"fmt"
+	"io/ioutil"
+)
+
+// TLSConfig configures the options for TLS connections.
+type TLSConfig struct {
+	// The CA cert to use for the targets.
+	CAFile string `yaml:"ca_file,omitempty"`
+	// The client cert file for the targets.
+	CertFile string `yaml:"cert_file,omitempty"`
+	// The client key file for the targets.
+	KeyFile string `yaml:"key_file,omitempty"`
+	// Disable target certificate validation.
+	InsecureSkipVerify bool `yaml:"insecure_skip_verify"`
+
+	// Catches all undefined fields and must be empty after parsing.
+	XXX map[string]interface{} `yaml:",inline"`
+}
+
+// UnmarshalYAML implements the yaml.Unmarshaler interface.
+func (c *TLSConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	type plain TLSConfig
+	if err := unmarshal((*plain)(c)); err != nil {
+		return err
+	}
+	return checkOverflow(c.XXX, "TLS config")
+}
+
+// GenerateConfig produces a tls.Config based on TLS connection options.
+// It loads certificate files from disk if they are defined.
+func (c *TLSConfig) GenerateConfig() (*tls.Config, error) {
+	tlsConfig := &tls.Config{InsecureSkipVerify: c.InsecureSkipVerify}
+
+	// If a CA cert is provided then let's read it in so we can validate the
+	// scrape target's certificate properly.
+	if len(c.CAFile) > 0 {
+		caCertPool := x509.NewCertPool()
+		// Load CA cert.
+		caCert, err := ioutil.ReadFile(c.CAFile)
+		if err != nil {
+			return nil, fmt.Errorf("unable to use specified CA cert %s: %s", c.CAFile, err)
+		}
+		caCertPool.AppendCertsFromPEM(caCert)
+		tlsConfig.RootCAs = caCertPool
+	}
+
+	if len(c.CertFile) > 0 && len(c.KeyFile) == 0 {
+		return nil, fmt.Errorf("client cert file %q specified without client key file", c.CertFile)
+	} else if len(c.KeyFile) > 0 && len(c.CertFile) == 0 {
+		return nil, fmt.Errorf("client key file %q specified without client cert file", c.KeyFile)
+	} else if len(c.CertFile) > 0 && len(c.KeyFile) > 0 {
+		cert, err := tls.LoadX509KeyPair(c.CertFile, c.KeyFile)
+		if err != nil {
+			return nil, fmt.Errorf("unable to use specified client cert (%s) & key (%s): %s", c.CertFile, c.KeyFile, err)
+		}
+		tlsConfig.Certificates = []tls.Certificate{cert}
+	}
+	tlsConfig.BuildNameToCertificate()
+
+	return tlsConfig, nil
+}
diff --git a/vendor/github.com/prometheus/common/config/tls_config_test.go b/vendor/github.com/prometheus/common/config/tls_config_test.go
new file mode 100644
index 000000000..444303532
--- /dev/null
+++ b/vendor/github.com/prometheus/common/config/tls_config_test.go
@@ -0,0 +1,92 @@
+// Copyright 2016 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package config
+
+import (
+	"crypto/tls"
+	"io/ioutil"
+	"reflect"
+	"strings"
+	"testing"
+
+	"gopkg.in/yaml.v2"
+)
+
+// LoadTLSConfig parses the given YAML file into a tls.Config.
+func LoadTLSConfig(filename string) (*tls.Config, error) {
+	content, err := ioutil.ReadFile(filename)
+	if err != nil {
+		return nil, err
+	}
+	cfg := &TLSConfig{}
+	if err = yaml.Unmarshal(content, cfg); err != nil {
+		return nil, err
+	}
+	return cfg.GenerateConfig()
+}
+
+var expectedTLSConfigs = []struct {
+	filename string
+	config   *tls.Config
+}{
+	{
+		filename: "tls_config.empty.good.yml",
+		config:   &tls.Config{},
+	}, {
+		filename: "tls_config.insecure.good.yml",
+		config:   &tls.Config{InsecureSkipVerify: true},
+	},
+}
+
+func TestValidTLSConfig(t *testing.T) {
+	for _, cfg := range expectedTLSConfigs {
+		cfg.config.BuildNameToCertificate()
+		got, err := LoadTLSConfig("testdata/" + cfg.filename)
+		if err != nil {
+			t.Errorf("Error parsing %s: %s", cfg.filename, err)
+		}
+		if !reflect.DeepEqual(*got, *cfg.config) {
+			t.Fatalf("%s: unexpected config result: \n\n%s\n expected\n\n%s", cfg.filename, got, cfg.config)
+		}
+	}
+}
+
+var expectedTLSConfigErrors = []struct {
+	filename string
+	errMsg   string
+}{
+	{
+		filename: "tls_config.invalid_field.bad.yml",
+		errMsg:   "unknown fields in",
+	}, {
+		filename: "tls_config.cert_no_key.bad.yml",
+		errMsg:   "specified without client key file",
+	}, {
+		filename: "tls_config.key_no_cert.bad.yml",
+		errMsg:   "specified without client cert file",
+	},
+}
+
+func TestBadTLSConfigs(t *testing.T) {
+	for _, ee := range expectedTLSConfigErrors {
+		_, err := LoadTLSConfig("testdata/" + ee.filename)
+		if err == nil {
+			t.Errorf("Expected error parsing %s but got none", ee.filename)
+			continue
+		}
+		if !strings.Contains(err.Error(), ee.errMsg) {
+			t.Errorf("Expected error for %s to contain %q but got: %s", ee.filename, ee.errMsg, err)
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/common/expfmt/bench_test.go b/vendor/github.com/prometheus/common/expfmt/bench_test.go
new file mode 100644
index 000000000..e539bfc13
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/bench_test.go
@@ -0,0 +1,167 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package expfmt
+
+import (
+	"bytes"
+	"compress/gzip"
+	"io"
+	"io/ioutil"
+	"testing"
+
+	"github.com/matttproud/golang_protobuf_extensions/pbutil"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+var parser TextParser
+
+// Benchmarks to show how much penalty text format parsing actually inflicts.
+//
+// Example results on Linux 3.13.0, Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz, go1.4.
+//
+// BenchmarkParseText          1000           1188535 ns/op          205085 B/op       6135 allocs/op
+// BenchmarkParseTextGzip      1000           1376567 ns/op          246224 B/op       6151 allocs/op
+// BenchmarkParseProto        10000            172790 ns/op           52258 B/op       1160 allocs/op
+// BenchmarkParseProtoGzip     5000            324021 ns/op           94931 B/op       1211 allocs/op
+// BenchmarkParseProtoMap     10000            187946 ns/op           58714 B/op       1203 allocs/op
+//
+// CONCLUSION: The overhead for the map is negligible. Text format needs ~5x more allocations.
+// Without compression, it needs ~7x longer, but with compression (the more relevant scenario),
+// the difference becomes less relevant, only ~4x.
+//
+// The test data contains 248 samples.
+
+// BenchmarkParseText benchmarks the parsing of a text-format scrape into metric
+// family DTOs.
+func BenchmarkParseText(b *testing.B) {
+	b.StopTimer()
+	data, err := ioutil.ReadFile("testdata/text")
+	if err != nil {
+		b.Fatal(err)
+	}
+	b.StartTimer()
+
+	for i := 0; i < b.N; i++ {
+		if _, err := parser.TextToMetricFamilies(bytes.NewReader(data)); err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+// BenchmarkParseTextGzip benchmarks the parsing of a gzipped text-format scrape
+// into metric family DTOs.
+func BenchmarkParseTextGzip(b *testing.B) {
+	b.StopTimer()
+	data, err := ioutil.ReadFile("testdata/text.gz")
+	if err != nil {
+		b.Fatal(err)
+	}
+	b.StartTimer()
+
+	for i := 0; i < b.N; i++ {
+		in, err := gzip.NewReader(bytes.NewReader(data))
+		if err != nil {
+			b.Fatal(err)
+		}
+		if _, err := parser.TextToMetricFamilies(in); err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+// BenchmarkParseProto benchmarks the parsing of a protobuf-format scrape into
+// metric family DTOs. Note that this does not build a map of metric families
+// (as the text version does), because it is not required for Prometheus
+// ingestion either. (However, it is required for the text-format parsing, as
+// the metric family might be sprinkled all over the text, while the
+// protobuf-format guarantees bundling at one place.)
+func BenchmarkParseProto(b *testing.B) {
+	b.StopTimer()
+	data, err := ioutil.ReadFile("testdata/protobuf")
+	if err != nil {
+		b.Fatal(err)
+	}
+	b.StartTimer()
+
+	for i := 0; i < b.N; i++ {
+		family := &dto.MetricFamily{}
+		in := bytes.NewReader(data)
+		for {
+			family.Reset()
+			if _, err := pbutil.ReadDelimited(in, family); err != nil {
+				if err == io.EOF {
+					break
+				}
+				b.Fatal(err)
+			}
+		}
+	}
+}
+
+// BenchmarkParseProtoGzip is like BenchmarkParseProto above, but parses gzipped
+// protobuf format.
+func BenchmarkParseProtoGzip(b *testing.B) {
+	b.StopTimer()
+	data, err := ioutil.ReadFile("testdata/protobuf.gz")
+	if err != nil {
+		b.Fatal(err)
+	}
+	b.StartTimer()
+
+	for i := 0; i < b.N; i++ {
+		family := &dto.MetricFamily{}
+		in, err := gzip.NewReader(bytes.NewReader(data))
+		if err != nil {
+			b.Fatal(err)
+		}
+		for {
+			family.Reset()
+			if _, err := pbutil.ReadDelimited(in, family); err != nil {
+				if err == io.EOF {
+					break
+				}
+				b.Fatal(err)
+			}
+		}
+	}
+}
+
+// BenchmarkParseProtoMap is like BenchmarkParseProto but DOES put the parsed
+// metric family DTOs into a map. This is not happening during Prometheus
+// ingestion. It is just here to measure the overhead of that map creation and
+// separate it from the overhead of the text format parsing.
+func BenchmarkParseProtoMap(b *testing.B) {
+	b.StopTimer()
+	data, err := ioutil.ReadFile("testdata/protobuf")
+	if err != nil {
+		b.Fatal(err)
+	}
+	b.StartTimer()
+
+	for i := 0; i < b.N; i++ {
+		families := map[string]*dto.MetricFamily{}
+		in := bytes.NewReader(data)
+		for {
+			family := &dto.MetricFamily{}
+			if _, err := pbutil.ReadDelimited(in, family); err != nil {
+				if err == io.EOF {
+					break
+				}
+				b.Fatal(err)
+			}
+			families[family.GetName()] = family
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/common/expfmt/decode.go b/vendor/github.com/prometheus/common/expfmt/decode.go
new file mode 100644
index 000000000..487fdc6cc
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/decode.go
@@ -0,0 +1,412 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package expfmt
+
+import (
+	"fmt"
+	"io"
+	"math"
+	"mime"
+	"net/http"
+
+	dto "github.com/prometheus/client_model/go"
+
+	"github.com/matttproud/golang_protobuf_extensions/pbutil"
+	"github.com/prometheus/common/model"
+)
+
+// Decoder types decode an input stream into metric families.
+type Decoder interface {
+	Decode(*dto.MetricFamily) error
+}
+
+type DecodeOptions struct {
+	// Timestamp is added to each value from the stream that has no explicit timestamp set.
+	Timestamp model.Time
+}
+
+// ResponseFormat extracts the correct format from a HTTP response header.
+// If no matching format can be found FormatUnknown is returned.
+func ResponseFormat(h http.Header) Format {
+	ct := h.Get(hdrContentType)
+
+	mediatype, params, err := mime.ParseMediaType(ct)
+	if err != nil {
+		return FmtUnknown
+	}
+
+	const textType = "text/plain"
+
+	switch mediatype {
+	case ProtoType:
+		if p, ok := params["proto"]; ok && p != ProtoProtocol {
+			return FmtUnknown
+		}
+		if e, ok := params["encoding"]; ok && e != "delimited" {
+			return FmtUnknown
+		}
+		return FmtProtoDelim
+
+	case textType:
+		if v, ok := params["version"]; ok && v != TextVersion {
+			return FmtUnknown
+		}
+		return FmtText
+	}
+
+	return FmtUnknown
+}
+
+// NewDecoder returns a new decoder based on the given input format.
+// If the input format does not imply otherwise, a text format decoder is returned.
+func NewDecoder(r io.Reader, format Format) Decoder {
+	switch format {
+	case FmtProtoDelim:
+		return &protoDecoder{r: r}
+	}
+	return &textDecoder{r: r}
+}
+
+// protoDecoder implements the Decoder interface for protocol buffers.
+type protoDecoder struct {
+	r io.Reader
+}
+
+// Decode implements the Decoder interface.
+func (d *protoDecoder) Decode(v *dto.MetricFamily) error {
+	_, err := pbutil.ReadDelimited(d.r, v)
+	if err != nil {
+		return err
+	}
+	if !model.IsValidMetricName(model.LabelValue(v.GetName())) {
+		return fmt.Errorf("invalid metric name %q", v.GetName())
+	}
+	for _, m := range v.GetMetric() {
+		if m == nil {
+			continue
+		}
+		for _, l := range m.GetLabel() {
+			if l == nil {
+				continue
+			}
+			if !model.LabelValue(l.GetValue()).IsValid() {
+				return fmt.Errorf("invalid label value %q", l.GetValue())
+			}
+			if !model.LabelName(l.GetName()).IsValid() {
+				return fmt.Errorf("invalid label name %q", l.GetName())
+			}
+		}
+	}
+	return nil
+}
+
+// textDecoder implements the Decoder interface for the text protocol.
+type textDecoder struct {
+	r    io.Reader
+	p    TextParser
+	fams []*dto.MetricFamily
+}
+
+// Decode implements the Decoder interface.
+func (d *textDecoder) Decode(v *dto.MetricFamily) error {
+	// TODO(fabxc): Wrap this as a line reader to make streaming safer.
+	if len(d.fams) == 0 {
+		// No cached metric families, read everything and parse metrics.
+		fams, err := d.p.TextToMetricFamilies(d.r)
+		if err != nil {
+			return err
+		}
+		if len(fams) == 0 {
+			return io.EOF
+		}
+		d.fams = make([]*dto.MetricFamily, 0, len(fams))
+		for _, f := range fams {
+			d.fams = append(d.fams, f)
+		}
+	}
+
+	*v = *d.fams[0]
+	d.fams = d.fams[1:]
+
+	return nil
+}
+
+type SampleDecoder struct {
+	Dec  Decoder
+	Opts *DecodeOptions
+
+	f dto.MetricFamily
+}
+
+func (sd *SampleDecoder) Decode(s *model.Vector) error {
+	if err := sd.Dec.Decode(&sd.f); err != nil {
+		return err
+	}
+	*s = extractSamples(&sd.f, sd.Opts)
+	return nil
+}
+
+// Extract samples builds a slice of samples from the provided metric families.
+func ExtractSamples(o *DecodeOptions, fams ...*dto.MetricFamily) model.Vector {
+	var all model.Vector
+	for _, f := range fams {
+		all = append(all, extractSamples(f, o)...)
+	}
+	return all
+}
+
+func extractSamples(f *dto.MetricFamily, o *DecodeOptions) model.Vector {
+	switch f.GetType() {
+	case dto.MetricType_COUNTER:
+		return extractCounter(o, f)
+	case dto.MetricType_GAUGE:
+		return extractGauge(o, f)
+	case dto.MetricType_SUMMARY:
+		return extractSummary(o, f)
+	case dto.MetricType_UNTYPED:
+		return extractUntyped(o, f)
+	case dto.MetricType_HISTOGRAM:
+		return extractHistogram(o, f)
+	}
+	panic("expfmt.extractSamples: unknown metric family type")
+}
+
+func extractCounter(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
+	samples := make(model.Vector, 0, len(f.Metric))
+
+	for _, m := range f.Metric {
+		if m.Counter == nil {
+			continue
+		}
+
+		lset := make(model.LabelSet, len(m.Label)+1)
+		for _, p := range m.Label {
+			lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
+		}
+		lset[model.MetricNameLabel] = model.LabelValue(f.GetName())
+
+		smpl := &model.Sample{
+			Metric: model.Metric(lset),
+			Value:  model.SampleValue(m.Counter.GetValue()),
+		}
+
+		if m.TimestampMs != nil {
+			smpl.Timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
+		} else {
+			smpl.Timestamp = o.Timestamp
+		}
+
+		samples = append(samples, smpl)
+	}
+
+	return samples
+}
+
+func extractGauge(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
+	samples := make(model.Vector, 0, len(f.Metric))
+
+	for _, m := range f.Metric {
+		if m.Gauge == nil {
+			continue
+		}
+
+		lset := make(model.LabelSet, len(m.Label)+1)
+		for _, p := range m.Label {
+			lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
+		}
+		lset[model.MetricNameLabel] = model.LabelValue(f.GetName())
+
+		smpl := &model.Sample{
+			Metric: model.Metric(lset),
+			Value:  model.SampleValue(m.Gauge.GetValue()),
+		}
+
+		if m.TimestampMs != nil {
+			smpl.Timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
+		} else {
+			smpl.Timestamp = o.Timestamp
+		}
+
+		samples = append(samples, smpl)
+	}
+
+	return samples
+}
+
+func extractUntyped(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
+	samples := make(model.Vector, 0, len(f.Metric))
+
+	for _, m := range f.Metric {
+		if m.Untyped == nil {
+			continue
+		}
+
+		lset := make(model.LabelSet, len(m.Label)+1)
+		for _, p := range m.Label {
+			lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
+		}
+		lset[model.MetricNameLabel] = model.LabelValue(f.GetName())
+
+		smpl := &model.Sample{
+			Metric: model.Metric(lset),
+			Value:  model.SampleValue(m.Untyped.GetValue()),
+		}
+
+		if m.TimestampMs != nil {
+			smpl.Timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
+		} else {
+			smpl.Timestamp = o.Timestamp
+		}
+
+		samples = append(samples, smpl)
+	}
+
+	return samples
+}
+
+func extractSummary(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
+	samples := make(model.Vector, 0, len(f.Metric))
+
+	for _, m := range f.Metric {
+		if m.Summary == nil {
+			continue
+		}
+
+		timestamp := o.Timestamp
+		if m.TimestampMs != nil {
+			timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
+		}
+
+		for _, q := range m.Summary.Quantile {
+			lset := make(model.LabelSet, len(m.Label)+2)
+			for _, p := range m.Label {
+				lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
+			}
+			// BUG(matt): Update other names to "quantile".
+			lset[model.LabelName(model.QuantileLabel)] = model.LabelValue(fmt.Sprint(q.GetQuantile()))
+			lset[model.MetricNameLabel] = model.LabelValue(f.GetName())
+
+			samples = append(samples, &model.Sample{
+				Metric:    model.Metric(lset),
+				Value:     model.SampleValue(q.GetValue()),
+				Timestamp: timestamp,
+			})
+		}
+
+		lset := make(model.LabelSet, len(m.Label)+1)
+		for _, p := range m.Label {
+			lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
+		}
+		lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_sum")
+
+		samples = append(samples, &model.Sample{
+			Metric:    model.Metric(lset),
+			Value:     model.SampleValue(m.Summary.GetSampleSum()),
+			Timestamp: timestamp,
+		})
+
+		lset = make(model.LabelSet, len(m.Label)+1)
+		for _, p := range m.Label {
+			lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
+		}
+		lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_count")
+
+		samples = append(samples, &model.Sample{
+			Metric:    model.Metric(lset),
+			Value:     model.SampleValue(m.Summary.GetSampleCount()),
+			Timestamp: timestamp,
+		})
+	}
+
+	return samples
+}
+
+func extractHistogram(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
+	samples := make(model.Vector, 0, len(f.Metric))
+
+	for _, m := range f.Metric {
+		if m.Histogram == nil {
+			continue
+		}
+
+		timestamp := o.Timestamp
+		if m.TimestampMs != nil {
+			timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
+		}
+
+		infSeen := false
+
+		for _, q := range m.Histogram.Bucket {
+			lset := make(model.LabelSet, len(m.Label)+2)
+			for _, p := range m.Label {
+				lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
+			}
+			lset[model.LabelName(model.BucketLabel)] = model.LabelValue(fmt.Sprint(q.GetUpperBound()))
+			lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_bucket")
+
+			if math.IsInf(q.GetUpperBound(), +1) {
+				infSeen = true
+			}
+
+			samples = append(samples, &model.Sample{
+				Metric:    model.Metric(lset),
+				Value:     model.SampleValue(q.GetCumulativeCount()),
+				Timestamp: timestamp,
+			})
+		}
+
+		lset := make(model.LabelSet, len(m.Label)+1)
+		for _, p := range m.Label {
+			lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
+		}
+		lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_sum")
+
+		samples = append(samples, &model.Sample{
+			Metric:    model.Metric(lset),
+			Value:     model.SampleValue(m.Histogram.GetSampleSum()),
+			Timestamp: timestamp,
+		})
+
+		lset = make(model.LabelSet, len(m.Label)+1)
+		for _, p := range m.Label {
+			lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
+		}
+		lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_count")
+
+		count := &model.Sample{
+			Metric:    model.Metric(lset),
+			Value:     model.SampleValue(m.Histogram.GetSampleCount()),
+			Timestamp: timestamp,
+		}
+		samples = append(samples, count)
+
+		if !infSeen {
+			// Append an infinity bucket sample.
+			lset := make(model.LabelSet, len(m.Label)+2)
+			for _, p := range m.Label {
+				lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
+			}
+			lset[model.LabelName(model.BucketLabel)] = model.LabelValue("+Inf")
+			lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_bucket")
+
+			samples = append(samples, &model.Sample{
+				Metric:    model.Metric(lset),
+				Value:     count.Value,
+				Timestamp: timestamp,
+			})
+		}
+	}
+
+	return samples
+}
diff --git a/vendor/github.com/prometheus/common/expfmt/decode_test.go b/vendor/github.com/prometheus/common/expfmt/decode_test.go
new file mode 100644
index 000000000..c27325a9d
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/decode_test.go
@@ -0,0 +1,367 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package expfmt
+
+import (
+	"io"
+	"net/http"
+	"reflect"
+	"sort"
+	"strings"
+	"testing"
+
+	"github.com/prometheus/common/model"
+)
+
+func TestTextDecoder(t *testing.T) {
+	var (
+		ts = model.Now()
+		in = `
+# Only a quite simple scenario with two metric families.
+# More complicated tests of the parser itself can be found in the text package.
+# TYPE mf2 counter
+mf2 3
+mf1{label="value1"} -3.14 123456
+mf1{label="value2"} 42
+mf2 4
+`
+		out = model.Vector{
+			&model.Sample{
+				Metric: model.Metric{
+					model.MetricNameLabel: "mf1",
+					"label":               "value1",
+				},
+				Value:     -3.14,
+				Timestamp: 123456,
+			},
+			&model.Sample{
+				Metric: model.Metric{
+					model.MetricNameLabel: "mf1",
+					"label":               "value2",
+				},
+				Value:     42,
+				Timestamp: ts,
+			},
+			&model.Sample{
+				Metric: model.Metric{
+					model.MetricNameLabel: "mf2",
+				},
+				Value:     3,
+				Timestamp: ts,
+			},
+			&model.Sample{
+				Metric: model.Metric{
+					model.MetricNameLabel: "mf2",
+				},
+				Value:     4,
+				Timestamp: ts,
+			},
+		}
+	)
+
+	dec := &SampleDecoder{
+		Dec: &textDecoder{r: strings.NewReader(in)},
+		Opts: &DecodeOptions{
+			Timestamp: ts,
+		},
+	}
+	var all model.Vector
+	for {
+		var smpls model.Vector
+		err := dec.Decode(&smpls)
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			t.Fatal(err)
+		}
+		all = append(all, smpls...)
+	}
+	sort.Sort(all)
+	sort.Sort(out)
+	if !reflect.DeepEqual(all, out) {
+		t.Fatalf("output does not match")
+	}
+}
+
+func TestProtoDecoder(t *testing.T) {
+
+	var testTime = model.Now()
+
+	scenarios := []struct {
+		in       string
+		expected model.Vector
+		fail     bool
+	}{
+		{
+			in: "",
+		},
+		{
+			in:   "\x8f\x01\n\rrequest_count\x12\x12Number of requests\x18\x00\"0\n#\n\x0fsome_!abel_name\x12\x10some_label_value\x1a\t\t\x00\x00\x00\x00\x00\x00E\xc0\"6\n)\n\x12another_label_name\x12\x13another_label_value\x1a\t\t\x00\x00\x00\x00\x00\x00U@",
+			fail: true,
+		},
+		{
+			in: "\x8f\x01\n\rrequest_count\x12\x12Number of requests\x18\x00\"0\n#\n\x0fsome_label_name\x12\x10some_label_value\x1a\t\t\x00\x00\x00\x00\x00\x00E\xc0\"6\n)\n\x12another_label_name\x12\x13another_label_value\x1a\t\t\x00\x00\x00\x00\x00\x00U@",
+			expected: model.Vector{
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_count",
+						"some_label_name":     "some_label_value",
+					},
+					Value:     -42,
+					Timestamp: testTime,
+				},
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_count",
+						"another_label_name":  "another_label_value",
+					},
+					Value:     84,
+					Timestamp: testTime,
+				},
+			},
+		},
+		{
+			in: "\xb9\x01\n\rrequest_count\x12\x12Number of requests\x18\x02\"O\n#\n\x0fsome_label_name\x12\x10some_label_value\"(\x1a\x12\t\xaeG\xe1z\x14\xae\xef?\x11\x00\x00\x00\x00\x00\x00E\xc0\x1a\x12\t+\x87\x16\xd9\xce\xf7\xef?\x11\x00\x00\x00\x00\x00\x00U\xc0\"A\n)\n\x12another_label_name\x12\x13another_label_value\"\x14\x1a\x12\t\x00\x00\x00\x00\x00\x00\xe0?\x11\x00\x00\x00\x00\x00\x00$@",
+			expected: model.Vector{
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_count_count",
+						"some_label_name":     "some_label_value",
+					},
+					Value:     0,
+					Timestamp: testTime,
+				},
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_count_sum",
+						"some_label_name":     "some_label_value",
+					},
+					Value:     0,
+					Timestamp: testTime,
+				},
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_count",
+						"some_label_name":     "some_label_value",
+						"quantile":            "0.99",
+					},
+					Value:     -42,
+					Timestamp: testTime,
+				},
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_count",
+						"some_label_name":     "some_label_value",
+						"quantile":            "0.999",
+					},
+					Value:     -84,
+					Timestamp: testTime,
+				},
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_count_count",
+						"another_label_name":  "another_label_value",
+					},
+					Value:     0,
+					Timestamp: testTime,
+				},
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_count_sum",
+						"another_label_name":  "another_label_value",
+					},
+					Value:     0,
+					Timestamp: testTime,
+				},
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_count",
+						"another_label_name":  "another_label_value",
+						"quantile":            "0.5",
+					},
+					Value:     10,
+					Timestamp: testTime,
+				},
+			},
+		},
+		{
+			in: "\x8d\x01\n\x1drequest_duration_microseconds\x12\x15The response latency.\x18\x04\"S:Q\b\x85\x15\x11\xcd\xcc\xccL\x8f\xcb:A\x1a\v\b{\x11\x00\x00\x00\x00\x00\x00Y@\x1a\f\b\x9c\x03\x11\x00\x00\x00\x00\x00\x00^@\x1a\f\b\xd0\x04\x11\x00\x00\x00\x00\x00\x00b@\x1a\f\b\xf4\v\x11\x9a\x99\x99\x99\x99\x99e@\x1a\f\b\x85\x15\x11\x00\x00\x00\x00\x00\x00\xf0\u007f",
+			expected: model.Vector{
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_duration_microseconds_bucket",
+						"le": "100",
+					},
+					Value:     123,
+					Timestamp: testTime,
+				},
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_duration_microseconds_bucket",
+						"le": "120",
+					},
+					Value:     412,
+					Timestamp: testTime,
+				},
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_duration_microseconds_bucket",
+						"le": "144",
+					},
+					Value:     592,
+					Timestamp: testTime,
+				},
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_duration_microseconds_bucket",
+						"le": "172.8",
+					},
+					Value:     1524,
+					Timestamp: testTime,
+				},
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_duration_microseconds_bucket",
+						"le": "+Inf",
+					},
+					Value:     2693,
+					Timestamp: testTime,
+				},
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_duration_microseconds_sum",
+					},
+					Value:     1756047.3,
+					Timestamp: testTime,
+				},
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_duration_microseconds_count",
+					},
+					Value:     2693,
+					Timestamp: testTime,
+				},
+			},
+		},
+		{
+			// The metric type is unset in this protobuf, which needs to be handled
+			// correctly by the decoder.
+			in: "\x1c\n\rrequest_count\"\v\x1a\t\t\x00\x00\x00\x00\x00\x00\xf0?",
+			expected: model.Vector{
+				&model.Sample{
+					Metric: model.Metric{
+						model.MetricNameLabel: "request_count",
+					},
+					Value:     1,
+					Timestamp: testTime,
+				},
+			},
+		},
+	}
+
+	for i, scenario := range scenarios {
+		dec := &SampleDecoder{
+			Dec: &protoDecoder{r: strings.NewReader(scenario.in)},
+			Opts: &DecodeOptions{
+				Timestamp: testTime,
+			},
+		}
+
+		var all model.Vector
+		for {
+			var smpls model.Vector
+			err := dec.Decode(&smpls)
+			if err == io.EOF {
+				break
+			}
+			if scenario.fail {
+				if err == nil {
+					t.Fatal("Expected error but got none")
+				}
+				break
+			}
+			if err != nil {
+				t.Fatal(err)
+			}
+			all = append(all, smpls...)
+		}
+		sort.Sort(all)
+		sort.Sort(scenario.expected)
+		if !reflect.DeepEqual(all, scenario.expected) {
+			t.Fatalf("%d. output does not match, want: %#v, got %#v", i, scenario.expected, all)
+		}
+	}
+}
+
+func testDiscriminatorHTTPHeader(t testing.TB) {
+	var scenarios = []struct {
+		input  map[string]string
+		output Format
+		err    error
+	}{
+		{
+			input:  map[string]string{"Content-Type": `application/vnd.google.protobuf; proto="io.prometheus.client.MetricFamily"; encoding="delimited"`},
+			output: FmtProtoDelim,
+		},
+		{
+			input:  map[string]string{"Content-Type": `application/vnd.google.protobuf; proto="illegal"; encoding="delimited"`},
+			output: FmtUnknown,
+		},
+		{
+			input:  map[string]string{"Content-Type": `application/vnd.google.protobuf; proto="io.prometheus.client.MetricFamily"; encoding="illegal"`},
+			output: FmtUnknown,
+		},
+		{
+			input:  map[string]string{"Content-Type": `text/plain; version=0.0.4`},
+			output: FmtText,
+		},
+		{
+			input:  map[string]string{"Content-Type": `text/plain`},
+			output: FmtText,
+		},
+		{
+			input:  map[string]string{"Content-Type": `text/plain; version=0.0.3`},
+			output: FmtUnknown,
+		},
+	}
+
+	for i, scenario := range scenarios {
+		var header http.Header
+
+		if len(scenario.input) > 0 {
+			header = http.Header{}
+		}
+
+		for key, value := range scenario.input {
+			header.Add(key, value)
+		}
+
+		actual := ResponseFormat(header)
+
+		if scenario.output != actual {
+			t.Errorf("%d. expected %s, got %s", i, scenario.output, actual)
+		}
+	}
+}
+
+func TestDiscriminatorHTTPHeader(t *testing.T) {
+	testDiscriminatorHTTPHeader(t)
+}
+
+func BenchmarkDiscriminatorHTTPHeader(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		testDiscriminatorHTTPHeader(b)
+	}
+}
diff --git a/vendor/github.com/prometheus/common/expfmt/encode.go b/vendor/github.com/prometheus/common/expfmt/encode.go
new file mode 100644
index 000000000..11839ed65
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/encode.go
@@ -0,0 +1,88 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package expfmt
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/golang/protobuf/proto"
+	"github.com/matttproud/golang_protobuf_extensions/pbutil"
+	"github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+// Encoder types encode metric families into an underlying wire protocol.
+type Encoder interface {
+	Encode(*dto.MetricFamily) error
+}
+
+type encoder func(*dto.MetricFamily) error
+
+func (e encoder) Encode(v *dto.MetricFamily) error {
+	return e(v)
+}
+
+// Negotiate returns the Content-Type based on the given Accept header.
+// If no appropriate accepted type is found, FmtText is returned.
+func Negotiate(h http.Header) Format {
+	for _, ac := range goautoneg.ParseAccept(h.Get(hdrAccept)) {
+		// Check for protocol buffer
+		if ac.Type+"/"+ac.SubType == ProtoType && ac.Params["proto"] == ProtoProtocol {
+			switch ac.Params["encoding"] {
+			case "delimited":
+				return FmtProtoDelim
+			case "text":
+				return FmtProtoText
+			case "compact-text":
+				return FmtProtoCompact
+			}
+		}
+		// Check for text format.
+		ver := ac.Params["version"]
+		if ac.Type == "text" && ac.SubType == "plain" && (ver == TextVersion || ver == "") {
+			return FmtText
+		}
+	}
+	return FmtText
+}
+
+// NewEncoder returns a new encoder based on content type negotiation.
+func NewEncoder(w io.Writer, format Format) Encoder {
+	switch format {
+	case FmtProtoDelim:
+		return encoder(func(v *dto.MetricFamily) error {
+			_, err := pbutil.WriteDelimited(w, v)
+			return err
+		})
+	case FmtProtoCompact:
+		return encoder(func(v *dto.MetricFamily) error {
+			_, err := fmt.Fprintln(w, v.String())
+			return err
+		})
+	case FmtProtoText:
+		return encoder(func(v *dto.MetricFamily) error {
+			_, err := fmt.Fprintln(w, proto.MarshalTextString(v))
+			return err
+		})
+	case FmtText:
+		return encoder(func(v *dto.MetricFamily) error {
+			_, err := MetricFamilyToText(w, v)
+			return err
+		})
+	}
+	panic("expfmt.NewEncoder: unknown format")
+}
diff --git a/vendor/github.com/prometheus/common/expfmt/expfmt.go b/vendor/github.com/prometheus/common/expfmt/expfmt.go
new file mode 100644
index 000000000..fae10f6eb
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/expfmt.go
@@ -0,0 +1,37 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// A package for reading and writing Prometheus metrics.
+package expfmt
+
+type Format string
+
+const (
+	TextVersion = "0.0.4"
+
+	ProtoType     = `application/vnd.google.protobuf`
+	ProtoProtocol = `io.prometheus.client.MetricFamily`
+	ProtoFmt      = ProtoType + "; proto=" + ProtoProtocol + ";"
+
+	// The Content-Type values for the different wire protocols.
+	FmtUnknown      Format = `<unknown>`
+	FmtText         Format = `text/plain; version=` + TextVersion
+	FmtProtoDelim   Format = ProtoFmt + ` encoding=delimited`
+	FmtProtoText    Format = ProtoFmt + ` encoding=text`
+	FmtProtoCompact Format = ProtoFmt + ` encoding=compact-text`
+)
+
+const (
+	hdrContentType = "Content-Type"
+	hdrAccept      = "Accept"
+)
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz.go b/vendor/github.com/prometheus/common/expfmt/fuzz.go
new file mode 100644
index 000000000..dc2eedeef
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz.go
@@ -0,0 +1,36 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Build only when actually fuzzing
+// +build gofuzz
+
+package expfmt
+
+import "bytes"
+
+// Fuzz text metric parser with with github.com/dvyukov/go-fuzz:
+//
+//     go-fuzz-build github.com/prometheus/common/expfmt
+//     go-fuzz -bin expfmt-fuzz.zip -workdir fuzz
+//
+// Further input samples should go in the folder fuzz/corpus.
+func Fuzz(in []byte) int {
+	parser := TextParser{}
+	_, err := parser.TextToMetricFamilies(bytes.NewReader(in))
+
+	if err != nil {
+		return 0
+	}
+
+	return 1
+}
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_0 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_0
new file mode 100644
index 000000000..139597f9c
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_0
@@ -0,0 +1,2 @@
+
+
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_1 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_1
new file mode 100644
index 000000000..2ae870679
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_1
@@ -0,0 +1,6 @@
+
+minimal_metric 1.234
+another_metric -3e3 103948
+# Even that:
+no_labels{} 3
+# HELP line for non-existing metric will be ignored.
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_2 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_2
new file mode 100644
index 000000000..5c351db36
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_2
@@ -0,0 +1,12 @@
+
+# A normal comment.
+#
+# TYPE name counter
+name{labelname="val1",basename="basevalue"} NaN
+name {labelname="val2",basename="base\"v\\al\nue"} 0.23 1234567890
+# HELP name two-line\n doc  str\\ing
+
+ # HELP  name2  	doc str"ing 2
+  #    TYPE    name2 gauge
+name2{labelname="val2"	,basename   =   "basevalue2"		} +Inf 54321
+name2{ labelname = "val1" , }-Inf
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_3 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_3
new file mode 100644
index 000000000..0b3c345aa
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_3
@@ -0,0 +1,22 @@
+
+# TYPE my_summary summary
+my_summary{n1="val1",quantile="0.5"} 110
+decoy -1 -2
+my_summary{n1="val1",quantile="0.9"} 140 1
+my_summary_count{n1="val1"} 42
+# Latest timestamp wins in case of a summary.
+my_summary_sum{n1="val1"} 4711 2
+fake_sum{n1="val1"} 2001
+# TYPE another_summary summary
+another_summary_count{n2="val2",n1="val1"} 20
+my_summary_count{n2="val2",n1="val1"} 5 5
+another_summary{n1="val1",n2="val2",quantile=".3"} -1.2
+my_summary_sum{n1="val2"} 08 15
+my_summary{n1="val3", quantile="0.2"} 4711
+  my_summary{n1="val1",n2="val2",quantile="-12.34",} NaN
+# some
+# funny comments
+# HELP 
+# HELP
+# HELP my_summary
+# HELP my_summary 
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_4 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_4
new file mode 100644
index 000000000..bde0a387a
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_4
@@ -0,0 +1,10 @@
+
+# HELP request_duration_microseconds The response latency.
+# TYPE request_duration_microseconds histogram
+request_duration_microseconds_bucket{le="100"} 123
+request_duration_microseconds_bucket{le="120"} 412
+request_duration_microseconds_bucket{le="144"} 592
+request_duration_microseconds_bucket{le="172.8"} 1524
+request_duration_microseconds_bucket{le="+Inf"} 2693
+request_duration_microseconds_sum 1.7560473e+06
+request_duration_microseconds_count 2693
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_0 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_0
new file mode 100644
index 000000000..4c67f9a19
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_0
@@ -0,0 +1 @@
+bla 3.14
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_1 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_1
new file mode 100644
index 000000000..b853478ee
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_1
@@ -0,0 +1 @@
+metric{label="\t"} 3.14
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_10 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_10
new file mode 100644
index 000000000..b5fe5f5a6
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_10
@@ -0,0 +1 @@
+metric{label="bla"} 3.14 2 3
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_11 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_11
new file mode 100644
index 000000000..57c7fbc0b
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_11
@@ -0,0 +1 @@
+metric{label="bla"} blubb
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_12 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_12
new file mode 100644
index 000000000..0a9df79a1
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_12
@@ -0,0 +1,3 @@
+
+# HELP metric one
+# HELP metric two
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_13 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_13
new file mode 100644
index 000000000..5bc742781
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_13
@@ -0,0 +1,3 @@
+
+# TYPE metric counter
+# TYPE metric untyped
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_14 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_14
new file mode 100644
index 000000000..a9a24265b
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_14
@@ -0,0 +1,3 @@
+
+metric 4.12
+# TYPE metric counter
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_15 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_15
new file mode 100644
index 000000000..7e95ca8f4
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_15
@@ -0,0 +1,2 @@
+
+# TYPE metric bla
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_16 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_16
new file mode 100644
index 000000000..7825f8887
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_16
@@ -0,0 +1,2 @@
+
+# TYPE met-ric
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_17 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_17
new file mode 100644
index 000000000..8f35cae0c
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_17
@@ -0,0 +1 @@
+@invalidmetric{label="bla"} 3.14 2
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_18 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_18
new file mode 100644
index 000000000..7ca2cc268
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_18
@@ -0,0 +1 @@
+{label="bla"} 3.14 2
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_19 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_19
new file mode 100644
index 000000000..7a6ccc0dd
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_19
@@ -0,0 +1,3 @@
+
+# TYPE metric histogram
+metric_bucket{le="bla"} 3.14
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_2 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_2
new file mode 100644
index 000000000..726d0017c
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_2
@@ -0,0 +1,3 @@
+
+metric{label="new
+line"} 3.14
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_3 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_3
new file mode 100644
index 000000000..6aa9e3081
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_3
@@ -0,0 +1 @@
+metric{@="bla"} 3.14
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_4 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_4
new file mode 100644
index 000000000..d112cb902
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_4
@@ -0,0 +1 @@
+metric{__name__="bla"} 3.14
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_5 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_5
new file mode 100644
index 000000000..b34554a8d
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_5
@@ -0,0 +1 @@
+metric{label+="bla"} 3.14
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_6 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_6
new file mode 100644
index 000000000..c4d7df3d1
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_6
@@ -0,0 +1 @@
+metric{label=bla} 3.14
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_7 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_7
new file mode 100644
index 000000000..97eafc4a6
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_7
@@ -0,0 +1,3 @@
+
+# TYPE metric summary
+metric{quantile="bla"} 3.14
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_8 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_8
new file mode 100644
index 000000000..fc706496b
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_8
@@ -0,0 +1 @@
+metric{label="bla"+} 3.14
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_9 b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_9
new file mode 100644
index 000000000..57b4879c0
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_9
@@ -0,0 +1 @@
+metric{label="bla"} 3.14 2.72
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/minimal b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/minimal
new file mode 100644
index 000000000..be1e6a369
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz/corpus/minimal
@@ -0,0 +1 @@
+m{} 0
diff --git a/vendor/github.com/prometheus/common/expfmt/testdata/json2 b/vendor/github.com/prometheus/common/expfmt/testdata/json2
new file mode 100644
index 000000000..b914c9386
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/testdata/json2
@@ -0,0 +1,46 @@
+[
+  {
+    "baseLabels": {
+      "__name__": "rpc_calls_total",
+      "job": "batch_job"
+    },
+    "docstring": "RPC calls.",
+    "metric": {
+      "type": "counter",
+      "value": [
+        {
+          "labels": {
+            "service": "zed"
+          },
+          "value": 25
+        },
+        {
+          "labels": {
+            "service": "bar"
+          },
+          "value": 24
+        }
+      ]
+    }
+  },
+  {
+    "baseLabels": {
+      "__name__": "rpc_latency_microseconds"
+    },
+    "docstring": "RPC latency.",
+    "metric": {
+      "type": "histogram",
+      "value": [
+        {
+          "labels": {
+            "service": "foo"
+          },
+          "value": {
+            "0.010000": 15,
+            "0.990000": 17
+          }
+        }
+      ]
+    }
+  }
+]
diff --git a/vendor/github.com/prometheus/common/expfmt/testdata/json2_bad b/vendor/github.com/prometheus/common/expfmt/testdata/json2_bad
new file mode 100644
index 000000000..cc6ac97c5
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/testdata/json2_bad
@@ -0,0 +1,46 @@
+[
+  {
+    "baseLabels": {
+      "__name__": "rpc_calls_total",
+      "job": "batch_job"
+    },
+    "docstring": "RPC calls.",
+    "metric": {
+      "type": "counter",
+      "value": [
+        {
+          "labels": {
+            "servic|e": "zed"
+          },
+          "value": 25
+        },
+        {
+          "labels": {
+            "service": "bar"
+          },
+          "value": 24
+        }
+      ]
+    }
+  },
+  {
+    "baseLabels": {
+      "__name__": "rpc_latency_microseconds"
+    },
+    "docstring": "RPC latency.",
+    "metric": {
+      "type": "histogram",
+      "value": [
+        {
+          "labels": {
+            "service": "foo"
+          },
+          "value": {
+            "0.010000": 15,
+            "0.990000": 17
+          }
+        }
+      ]
+    }
+  }
+]
diff --git a/vendor/github.com/prometheus/common/expfmt/testdata/protobuf b/vendor/github.com/prometheus/common/expfmt/testdata/protobuf
new file mode 100644
index 000000000..b2d018a7c
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/testdata/protobuf
diff --git a/vendor/github.com/prometheus/common/expfmt/testdata/protobuf.gz b/vendor/github.com/prometheus/common/expfmt/testdata/protobuf.gz
new file mode 100644
index 000000000..7622adb1c
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/testdata/protobuf.gz
diff --git a/vendor/github.com/prometheus/common/expfmt/testdata/text b/vendor/github.com/prometheus/common/expfmt/testdata/text
new file mode 100644
index 000000000..f3d8c3784
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/testdata/text
@@ -0,0 +1,322 @@
+# HELP http_request_duration_microseconds The HTTP request latencies in microseconds.
+# TYPE http_request_duration_microseconds summary
+http_request_duration_microseconds{handler="/",quantile="0.5"} 0
+http_request_duration_microseconds{handler="/",quantile="0.9"} 0
+http_request_duration_microseconds{handler="/",quantile="0.99"} 0
+http_request_duration_microseconds_sum{handler="/"} 0
+http_request_duration_microseconds_count{handler="/"} 0
+http_request_duration_microseconds{handler="/alerts",quantile="0.5"} 0
+http_request_duration_microseconds{handler="/alerts",quantile="0.9"} 0
+http_request_duration_microseconds{handler="/alerts",quantile="0.99"} 0
+http_request_duration_microseconds_sum{handler="/alerts"} 0
+http_request_duration_microseconds_count{handler="/alerts"} 0
+http_request_duration_microseconds{handler="/api/metrics",quantile="0.5"} 0
+http_request_duration_microseconds{handler="/api/metrics",quantile="0.9"} 0
+http_request_duration_microseconds{handler="/api/metrics",quantile="0.99"} 0
+http_request_duration_microseconds_sum{handler="/api/metrics"} 0
+http_request_duration_microseconds_count{handler="/api/metrics"} 0
+http_request_duration_microseconds{handler="/api/query",quantile="0.5"} 0
+http_request_duration_microseconds{handler="/api/query",quantile="0.9"} 0
+http_request_duration_microseconds{handler="/api/query",quantile="0.99"} 0
+http_request_duration_microseconds_sum{handler="/api/query"} 0
+http_request_duration_microseconds_count{handler="/api/query"} 0
+http_request_duration_microseconds{handler="/api/query_range",quantile="0.5"} 0
+http_request_duration_microseconds{handler="/api/query_range",quantile="0.9"} 0
+http_request_duration_microseconds{handler="/api/query_range",quantile="0.99"} 0
+http_request_duration_microseconds_sum{handler="/api/query_range"} 0
+http_request_duration_microseconds_count{handler="/api/query_range"} 0
+http_request_duration_microseconds{handler="/api/targets",quantile="0.5"} 0
+http_request_duration_microseconds{handler="/api/targets",quantile="0.9"} 0
+http_request_duration_microseconds{handler="/api/targets",quantile="0.99"} 0
+http_request_duration_microseconds_sum{handler="/api/targets"} 0
+http_request_duration_microseconds_count{handler="/api/targets"} 0
+http_request_duration_microseconds{handler="/consoles/",quantile="0.5"} 0
+http_request_duration_microseconds{handler="/consoles/",quantile="0.9"} 0
+http_request_duration_microseconds{handler="/consoles/",quantile="0.99"} 0
+http_request_duration_microseconds_sum{handler="/consoles/"} 0
+http_request_duration_microseconds_count{handler="/consoles/"} 0
+http_request_duration_microseconds{handler="/graph",quantile="0.5"} 0
+http_request_duration_microseconds{handler="/graph",quantile="0.9"} 0
+http_request_duration_microseconds{handler="/graph",quantile="0.99"} 0
+http_request_duration_microseconds_sum{handler="/graph"} 0
+http_request_duration_microseconds_count{handler="/graph"} 0
+http_request_duration_microseconds{handler="/heap",quantile="0.5"} 0
+http_request_duration_microseconds{handler="/heap",quantile="0.9"} 0
+http_request_duration_microseconds{handler="/heap",quantile="0.99"} 0
+http_request_duration_microseconds_sum{handler="/heap"} 0
+http_request_duration_microseconds_count{handler="/heap"} 0
+http_request_duration_microseconds{handler="/static/",quantile="0.5"} 0
+http_request_duration_microseconds{handler="/static/",quantile="0.9"} 0
+http_request_duration_microseconds{handler="/static/",quantile="0.99"} 0
+http_request_duration_microseconds_sum{handler="/static/"} 0
+http_request_duration_microseconds_count{handler="/static/"} 0
+http_request_duration_microseconds{handler="prometheus",quantile="0.5"} 1307.275
+http_request_duration_microseconds{handler="prometheus",quantile="0.9"} 1858.632
+http_request_duration_microseconds{handler="prometheus",quantile="0.99"} 3087.384
+http_request_duration_microseconds_sum{handler="prometheus"} 179886.5000000001
+http_request_duration_microseconds_count{handler="prometheus"} 119
+# HELP http_request_size_bytes The HTTP request sizes in bytes.
+# TYPE http_request_size_bytes summary
+http_request_size_bytes{handler="/",quantile="0.5"} 0
+http_request_size_bytes{handler="/",quantile="0.9"} 0
+http_request_size_bytes{handler="/",quantile="0.99"} 0
+http_request_size_bytes_sum{handler="/"} 0
+http_request_size_bytes_count{handler="/"} 0
+http_request_size_bytes{handler="/alerts",quantile="0.5"} 0
+http_request_size_bytes{handler="/alerts",quantile="0.9"} 0
+http_request_size_bytes{handler="/alerts",quantile="0.99"} 0
+http_request_size_bytes_sum{handler="/alerts"} 0
+http_request_size_bytes_count{handler="/alerts"} 0
+http_request_size_bytes{handler="/api/metrics",quantile="0.5"} 0
+http_request_size_bytes{handler="/api/metrics",quantile="0.9"} 0
+http_request_size_bytes{handler="/api/metrics",quantile="0.99"} 0
+http_request_size_bytes_sum{handler="/api/metrics"} 0
+http_request_size_bytes_count{handler="/api/metrics"} 0
+http_request_size_bytes{handler="/api/query",quantile="0.5"} 0
+http_request_size_bytes{handler="/api/query",quantile="0.9"} 0
+http_request_size_bytes{handler="/api/query",quantile="0.99"} 0
+http_request_size_bytes_sum{handler="/api/query"} 0
+http_request_size_bytes_count{handler="/api/query"} 0
+http_request_size_bytes{handler="/api/query_range",quantile="0.5"} 0
+http_request_size_bytes{handler="/api/query_range",quantile="0.9"} 0
+http_request_size_bytes{handler="/api/query_range",quantile="0.99"} 0
+http_request_size_bytes_sum{handler="/api/query_range"} 0
+http_request_size_bytes_count{handler="/api/query_range"} 0
+http_request_size_bytes{handler="/api/targets",quantile="0.5"} 0
+http_request_size_bytes{handler="/api/targets",quantile="0.9"} 0
+http_request_size_bytes{handler="/api/targets",quantile="0.99"} 0
+http_request_size_bytes_sum{handler="/api/targets"} 0
+http_request_size_bytes_count{handler="/api/targets"} 0
+http_request_size_bytes{handler="/consoles/",quantile="0.5"} 0
+http_request_size_bytes{handler="/consoles/",quantile="0.9"} 0
+http_request_size_bytes{handler="/consoles/",quantile="0.99"} 0
+http_request_size_bytes_sum{handler="/consoles/"} 0
+http_request_size_bytes_count{handler="/consoles/"} 0
+http_request_size_bytes{handler="/graph",quantile="0.5"} 0
+http_request_size_bytes{handler="/graph",quantile="0.9"} 0
+http_request_size_bytes{handler="/graph",quantile="0.99"} 0
+http_request_size_bytes_sum{handler="/graph"} 0
+http_request_size_bytes_count{handler="/graph"} 0
+http_request_size_bytes{handler="/heap",quantile="0.5"} 0
+http_request_size_bytes{handler="/heap",quantile="0.9"} 0
+http_request_size_bytes{handler="/heap",quantile="0.99"} 0
+http_request_size_bytes_sum{handler="/heap"} 0
+http_request_size_bytes_count{handler="/heap"} 0
+http_request_size_bytes{handler="/static/",quantile="0.5"} 0
+http_request_size_bytes{handler="/static/",quantile="0.9"} 0
+http_request_size_bytes{handler="/static/",quantile="0.99"} 0
+http_request_size_bytes_sum{handler="/static/"} 0
+http_request_size_bytes_count{handler="/static/"} 0
+http_request_size_bytes{handler="prometheus",quantile="0.5"} 291
+http_request_size_bytes{handler="prometheus",quantile="0.9"} 291
+http_request_size_bytes{handler="prometheus",quantile="0.99"} 291
+http_request_size_bytes_sum{handler="prometheus"} 34488
+http_request_size_bytes_count{handler="prometheus"} 119
+# HELP http_requests_total Total number of HTTP requests made.
+# TYPE http_requests_total counter
+http_requests_total{code="200",handler="prometheus",method="get"} 119
+# HELP http_response_size_bytes The HTTP response sizes in bytes.
+# TYPE http_response_size_bytes summary
+http_response_size_bytes{handler="/",quantile="0.5"} 0
+http_response_size_bytes{handler="/",quantile="0.9"} 0
+http_response_size_bytes{handler="/",quantile="0.99"} 0
+http_response_size_bytes_sum{handler="/"} 0
+http_response_size_bytes_count{handler="/"} 0
+http_response_size_bytes{handler="/alerts",quantile="0.5"} 0
+http_response_size_bytes{handler="/alerts",quantile="0.9"} 0
+http_response_size_bytes{handler="/alerts",quantile="0.99"} 0
+http_response_size_bytes_sum{handler="/alerts"} 0
+http_response_size_bytes_count{handler="/alerts"} 0
+http_response_size_bytes{handler="/api/metrics",quantile="0.5"} 0
+http_response_size_bytes{handler="/api/metrics",quantile="0.9"} 0
+http_response_size_bytes{handler="/api/metrics",quantile="0.99"} 0
+http_response_size_bytes_sum{handler="/api/metrics"} 0
+http_response_size_bytes_count{handler="/api/metrics"} 0
+http_response_size_bytes{handler="/api/query",quantile="0.5"} 0
+http_response_size_bytes{handler="/api/query",quantile="0.9"} 0
+http_response_size_bytes{handler="/api/query",quantile="0.99"} 0
+http_response_size_bytes_sum{handler="/api/query"} 0
+http_response_size_bytes_count{handler="/api/query"} 0
+http_response_size_bytes{handler="/api/query_range",quantile="0.5"} 0
+http_response_size_bytes{handler="/api/query_range",quantile="0.9"} 0
+http_response_size_bytes{handler="/api/query_range",quantile="0.99"} 0
+http_response_size_bytes_sum{handler="/api/query_range"} 0
+http_response_size_bytes_count{handler="/api/query_range"} 0
+http_response_size_bytes{handler="/api/targets",quantile="0.5"} 0
+http_response_size_bytes{handler="/api/targets",quantile="0.9"} 0
+http_response_size_bytes{handler="/api/targets",quantile="0.99"} 0
+http_response_size_bytes_sum{handler="/api/targets"} 0
+http_response_size_bytes_count{handler="/api/targets"} 0
+http_response_size_bytes{handler="/consoles/",quantile="0.5"} 0
+http_response_size_bytes{handler="/consoles/",quantile="0.9"} 0
+http_response_size_bytes{handler="/consoles/",quantile="0.99"} 0
+http_response_size_bytes_sum{handler="/consoles/"} 0
+http_response_size_bytes_count{handler="/consoles/"} 0
+http_response_size_bytes{handler="/graph",quantile="0.5"} 0
+http_response_size_bytes{handler="/graph",quantile="0.9"} 0
+http_response_size_bytes{handler="/graph",quantile="0.99"} 0
+http_response_size_bytes_sum{handler="/graph"} 0
+http_response_size_bytes_count{handler="/graph"} 0
+http_response_size_bytes{handler="/heap",quantile="0.5"} 0
+http_response_size_bytes{handler="/heap",quantile="0.9"} 0
+http_response_size_bytes{handler="/heap",quantile="0.99"} 0
+http_response_size_bytes_sum{handler="/heap"} 0
+http_response_size_bytes_count{handler="/heap"} 0
+http_response_size_bytes{handler="/static/",quantile="0.5"} 0
+http_response_size_bytes{handler="/static/",quantile="0.9"} 0
+http_response_size_bytes{handler="/static/",quantile="0.99"} 0
+http_response_size_bytes_sum{handler="/static/"} 0
+http_response_size_bytes_count{handler="/static/"} 0
+http_response_size_bytes{handler="prometheus",quantile="0.5"} 2049
+http_response_size_bytes{handler="prometheus",quantile="0.9"} 2058
+http_response_size_bytes{handler="prometheus",quantile="0.99"} 2064
+http_response_size_bytes_sum{handler="prometheus"} 247001
+http_response_size_bytes_count{handler="prometheus"} 119
+# HELP process_cpu_seconds_total Total user and system CPU time spent in seconds.
+# TYPE process_cpu_seconds_total counter
+process_cpu_seconds_total 0.55
+# HELP go_goroutines Number of goroutines that currently exist.
+# TYPE go_goroutines gauge
+go_goroutines 70
+# HELP process_max_fds Maximum number of open file descriptors.
+# TYPE process_max_fds gauge
+process_max_fds 8192
+# HELP process_open_fds Number of open file descriptors.
+# TYPE process_open_fds gauge
+process_open_fds 29
+# HELP process_resident_memory_bytes Resident memory size in bytes.
+# TYPE process_resident_memory_bytes gauge
+process_resident_memory_bytes 5.3870592e+07
+# HELP process_start_time_seconds Start time of the process since unix epoch in seconds.
+# TYPE process_start_time_seconds gauge
+process_start_time_seconds 1.42236894836e+09
+# HELP process_virtual_memory_bytes Virtual memory size in bytes.
+# TYPE process_virtual_memory_bytes gauge
+process_virtual_memory_bytes 5.41478912e+08
+# HELP prometheus_dns_sd_lookup_failures_total The number of DNS-SD lookup failures.
+# TYPE prometheus_dns_sd_lookup_failures_total counter
+prometheus_dns_sd_lookup_failures_total 0
+# HELP prometheus_dns_sd_lookups_total The number of DNS-SD lookups.
+# TYPE prometheus_dns_sd_lookups_total counter
+prometheus_dns_sd_lookups_total 7
+# HELP prometheus_evaluator_duration_milliseconds The duration for all evaluations to execute.
+# TYPE prometheus_evaluator_duration_milliseconds summary
+prometheus_evaluator_duration_milliseconds{quantile="0.01"} 0
+prometheus_evaluator_duration_milliseconds{quantile="0.05"} 0
+prometheus_evaluator_duration_milliseconds{quantile="0.5"} 0
+prometheus_evaluator_duration_milliseconds{quantile="0.9"} 1
+prometheus_evaluator_duration_milliseconds{quantile="0.99"} 1
+prometheus_evaluator_duration_milliseconds_sum 12
+prometheus_evaluator_duration_milliseconds_count 23
+# HELP prometheus_local_storage_checkpoint_duration_milliseconds The duration (in milliseconds) it took to checkpoint in-memory metrics and head chunks.
+# TYPE prometheus_local_storage_checkpoint_duration_milliseconds gauge
+prometheus_local_storage_checkpoint_duration_milliseconds 0
+# HELP prometheus_local_storage_chunk_ops_total The total number of chunk operations by their type.
+# TYPE prometheus_local_storage_chunk_ops_total counter
+prometheus_local_storage_chunk_ops_total{type="create"} 598
+prometheus_local_storage_chunk_ops_total{type="persist"} 174
+prometheus_local_storage_chunk_ops_total{type="pin"} 920
+prometheus_local_storage_chunk_ops_total{type="transcode"} 415
+prometheus_local_storage_chunk_ops_total{type="unpin"} 920
+# HELP prometheus_local_storage_indexing_batch_latency_milliseconds Quantiles for batch indexing latencies in milliseconds.
+# TYPE prometheus_local_storage_indexing_batch_latency_milliseconds summary
+prometheus_local_storage_indexing_batch_latency_milliseconds{quantile="0.5"} 0
+prometheus_local_storage_indexing_batch_latency_milliseconds{quantile="0.9"} 0
+prometheus_local_storage_indexing_batch_latency_milliseconds{quantile="0.99"} 0
+prometheus_local_storage_indexing_batch_latency_milliseconds_sum 0
+prometheus_local_storage_indexing_batch_latency_milliseconds_count 1
+# HELP prometheus_local_storage_indexing_batch_sizes Quantiles for indexing batch sizes (number of metrics per batch).
+# TYPE prometheus_local_storage_indexing_batch_sizes summary
+prometheus_local_storage_indexing_batch_sizes{quantile="0.5"} 2
+prometheus_local_storage_indexing_batch_sizes{quantile="0.9"} 2
+prometheus_local_storage_indexing_batch_sizes{quantile="0.99"} 2
+prometheus_local_storage_indexing_batch_sizes_sum 2
+prometheus_local_storage_indexing_batch_sizes_count 1
+# HELP prometheus_local_storage_indexing_queue_capacity The capacity of the indexing queue.
+# TYPE prometheus_local_storage_indexing_queue_capacity gauge
+prometheus_local_storage_indexing_queue_capacity 16384
+# HELP prometheus_local_storage_indexing_queue_length The number of metrics waiting to be indexed.
+# TYPE prometheus_local_storage_indexing_queue_length gauge
+prometheus_local_storage_indexing_queue_length 0
+# HELP prometheus_local_storage_ingested_samples_total The total number of samples ingested.
+# TYPE prometheus_local_storage_ingested_samples_total counter
+prometheus_local_storage_ingested_samples_total 30473
+# HELP prometheus_local_storage_invalid_preload_requests_total The total number of preload requests referring to a non-existent series. This is an indication of outdated label indexes.
+# TYPE prometheus_local_storage_invalid_preload_requests_total counter
+prometheus_local_storage_invalid_preload_requests_total 0
+# HELP prometheus_local_storage_memory_chunkdescs The current number of chunk descriptors in memory.
+# TYPE prometheus_local_storage_memory_chunkdescs gauge
+prometheus_local_storage_memory_chunkdescs 1059
+# HELP prometheus_local_storage_memory_chunks The current number of chunks in memory, excluding cloned chunks (i.e. chunks without a descriptor).
+# TYPE prometheus_local_storage_memory_chunks gauge
+prometheus_local_storage_memory_chunks 1020
+# HELP prometheus_local_storage_memory_series The current number of series in memory.
+# TYPE prometheus_local_storage_memory_series gauge
+prometheus_local_storage_memory_series 424
+# HELP prometheus_local_storage_persist_latency_microseconds A summary of latencies for persisting each chunk.
+# TYPE prometheus_local_storage_persist_latency_microseconds summary
+prometheus_local_storage_persist_latency_microseconds{quantile="0.5"} 30.377
+prometheus_local_storage_persist_latency_microseconds{quantile="0.9"} 203.539
+prometheus_local_storage_persist_latency_microseconds{quantile="0.99"} 2626.463
+prometheus_local_storage_persist_latency_microseconds_sum 20424.415
+prometheus_local_storage_persist_latency_microseconds_count 174
+# HELP prometheus_local_storage_persist_queue_capacity The total capacity of the persist queue.
+# TYPE prometheus_local_storage_persist_queue_capacity gauge
+prometheus_local_storage_persist_queue_capacity 1024
+# HELP prometheus_local_storage_persist_queue_length The current number of chunks waiting in the persist queue.
+# TYPE prometheus_local_storage_persist_queue_length gauge
+prometheus_local_storage_persist_queue_length 0
+# HELP prometheus_local_storage_series_ops_total The total number of series operations by their type.
+# TYPE prometheus_local_storage_series_ops_total counter
+prometheus_local_storage_series_ops_total{type="create"} 2
+prometheus_local_storage_series_ops_total{type="maintenance_in_memory"} 11
+# HELP prometheus_notifications_latency_milliseconds Latency quantiles for sending alert notifications (not including dropped notifications).
+# TYPE prometheus_notifications_latency_milliseconds summary
+prometheus_notifications_latency_milliseconds{quantile="0.5"} 0
+prometheus_notifications_latency_milliseconds{quantile="0.9"} 0
+prometheus_notifications_latency_milliseconds{quantile="0.99"} 0
+prometheus_notifications_latency_milliseconds_sum 0
+prometheus_notifications_latency_milliseconds_count 0
+# HELP prometheus_notifications_queue_capacity The capacity of the alert notifications queue.
+# TYPE prometheus_notifications_queue_capacity gauge
+prometheus_notifications_queue_capacity 100
+# HELP prometheus_notifications_queue_length The number of alert notifications in the queue.
+# TYPE prometheus_notifications_queue_length gauge
+prometheus_notifications_queue_length 0
+# HELP prometheus_rule_evaluation_duration_milliseconds The duration for a rule to execute.
+# TYPE prometheus_rule_evaluation_duration_milliseconds summary
+prometheus_rule_evaluation_duration_milliseconds{rule_type="alerting",quantile="0.5"} 0
+prometheus_rule_evaluation_duration_milliseconds{rule_type="alerting",quantile="0.9"} 0
+prometheus_rule_evaluation_duration_milliseconds{rule_type="alerting",quantile="0.99"} 2
+prometheus_rule_evaluation_duration_milliseconds_sum{rule_type="alerting"} 12
+prometheus_rule_evaluation_duration_milliseconds_count{rule_type="alerting"} 115
+prometheus_rule_evaluation_duration_milliseconds{rule_type="recording",quantile="0.5"} 0
+prometheus_rule_evaluation_duration_milliseconds{rule_type="recording",quantile="0.9"} 0
+prometheus_rule_evaluation_duration_milliseconds{rule_type="recording",quantile="0.99"} 3
+prometheus_rule_evaluation_duration_milliseconds_sum{rule_type="recording"} 15
+prometheus_rule_evaluation_duration_milliseconds_count{rule_type="recording"} 115
+# HELP prometheus_rule_evaluation_failures_total The total number of rule evaluation failures.
+# TYPE prometheus_rule_evaluation_failures_total counter
+prometheus_rule_evaluation_failures_total 0
+# HELP prometheus_samples_queue_capacity Capacity of the queue for unwritten samples.
+# TYPE prometheus_samples_queue_capacity gauge
+prometheus_samples_queue_capacity 4096
+# HELP prometheus_samples_queue_length Current number of items in the queue for unwritten samples. Each item comprises all samples exposed by one target as one metric family (i.e. metrics of the same name).
+# TYPE prometheus_samples_queue_length gauge
+prometheus_samples_queue_length 0
+# HELP prometheus_target_interval_length_seconds Actual intervals between scrapes.
+# TYPE prometheus_target_interval_length_seconds summary
+prometheus_target_interval_length_seconds{interval="15s",quantile="0.01"} 14
+prometheus_target_interval_length_seconds{interval="15s",quantile="0.05"} 14
+prometheus_target_interval_length_seconds{interval="15s",quantile="0.5"} 15
+prometheus_target_interval_length_seconds{interval="15s",quantile="0.9"} 15
+prometheus_target_interval_length_seconds{interval="15s",quantile="0.99"} 15
+prometheus_target_interval_length_seconds_sum{interval="15s"} 175
+prometheus_target_interval_length_seconds_count{interval="15s"} 12
+prometheus_target_interval_length_seconds{interval="1s",quantile="0.01"} 0
+prometheus_target_interval_length_seconds{interval="1s",quantile="0.05"} 0
+prometheus_target_interval_length_seconds{interval="1s",quantile="0.5"} 0
+prometheus_target_interval_length_seconds{interval="1s",quantile="0.9"} 1
+prometheus_target_interval_length_seconds{interval="1s",quantile="0.99"} 1
+prometheus_target_interval_length_seconds_sum{interval="1s"} 55
+prometheus_target_interval_length_seconds_count{interval="1s"} 117
diff --git a/vendor/github.com/prometheus/common/expfmt/testdata/text.gz b/vendor/github.com/prometheus/common/expfmt/testdata/text.gz
new file mode 100644
index 000000000..b7658c84d
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/testdata/text.gz
diff --git a/vendor/github.com/prometheus/common/expfmt/text_create.go b/vendor/github.com/prometheus/common/expfmt/text_create.go
new file mode 100644
index 000000000..f11321cd0
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/text_create.go
@@ -0,0 +1,303 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package expfmt
+
+import (
+	"fmt"
+	"io"
+	"math"
+	"strings"
+
+	dto "github.com/prometheus/client_model/go"
+	"github.com/prometheus/common/model"
+)
+
+// MetricFamilyToText converts a MetricFamily proto message into text format and
+// writes the resulting lines to 'out'. It returns the number of bytes written
+// and any error encountered. The output will have the same order as the input,
+// no further sorting is performed. Furthermore, this function assumes the input
+// is already sanitized and does not perform any sanity checks. If the input
+// contains duplicate metrics or invalid metric or label names, the conversion
+// will result in invalid text format output.
+//
+// This method fulfills the type 'prometheus.encoder'.
+func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (int, error) {
+	var written int
+
+	// Fail-fast checks.
+	if len(in.Metric) == 0 {
+		return written, fmt.Errorf("MetricFamily has no metrics: %s", in)
+	}
+	name := in.GetName()
+	if name == "" {
+		return written, fmt.Errorf("MetricFamily has no name: %s", in)
+	}
+
+	// Comments, first HELP, then TYPE.
+	if in.Help != nil {
+		n, err := fmt.Fprintf(
+			out, "# HELP %s %s\n",
+			name, escapeString(*in.Help, false),
+		)
+		written += n
+		if err != nil {
+			return written, err
+		}
+	}
+	metricType := in.GetType()
+	n, err := fmt.Fprintf(
+		out, "# TYPE %s %s\n",
+		name, strings.ToLower(metricType.String()),
+	)
+	written += n
+	if err != nil {
+		return written, err
+	}
+
+	// Finally the samples, one line for each.
+	for _, metric := range in.Metric {
+		switch metricType {
+		case dto.MetricType_COUNTER:
+			if metric.Counter == nil {
+				return written, fmt.Errorf(
+					"expected counter in metric %s %s", name, metric,
+				)
+			}
+			n, err = writeSample(
+				name, metric, "", "",
+				metric.Counter.GetValue(),
+				out,
+			)
+		case dto.MetricType_GAUGE:
+			if metric.Gauge == nil {
+				return written, fmt.Errorf(
+					"expected gauge in metric %s %s", name, metric,
+				)
+			}
+			n, err = writeSample(
+				name, metric, "", "",
+				metric.Gauge.GetValue(),
+				out,
+			)
+		case dto.MetricType_UNTYPED:
+			if metric.Untyped == nil {
+				return written, fmt.Errorf(
+					"expected untyped in metric %s %s", name, metric,
+				)
+			}
+			n, err = writeSample(
+				name, metric, "", "",
+				metric.Untyped.GetValue(),
+				out,
+			)
+		case dto.MetricType_SUMMARY:
+			if metric.Summary == nil {
+				return written, fmt.Errorf(
+					"expected summary in metric %s %s", name, metric,
+				)
+			}
+			for _, q := range metric.Summary.Quantile {
+				n, err = writeSample(
+					name, metric,
+					model.QuantileLabel, fmt.Sprint(q.GetQuantile()),
+					q.GetValue(),
+					out,
+				)
+				written += n
+				if err != nil {
+					return written, err
+				}
+			}
+			n, err = writeSample(
+				name+"_sum", metric, "", "",
+				metric.Summary.GetSampleSum(),
+				out,
+			)
+			if err != nil {
+				return written, err
+			}
+			written += n
+			n, err = writeSample(
+				name+"_count", metric, "", "",
+				float64(metric.Summary.GetSampleCount()),
+				out,
+			)
+		case dto.MetricType_HISTOGRAM:
+			if metric.Histogram == nil {
+				return written, fmt.Errorf(
+					"expected histogram in metric %s %s", name, metric,
+				)
+			}
+			infSeen := false
+			for _, q := range metric.Histogram.Bucket {
+				n, err = writeSample(
+					name+"_bucket", metric,
+					model.BucketLabel, fmt.Sprint(q.GetUpperBound()),
+					float64(q.GetCumulativeCount()),
+					out,
+				)
+				written += n
+				if err != nil {
+					return written, err
+				}
+				if math.IsInf(q.GetUpperBound(), +1) {
+					infSeen = true
+				}
+			}
+			if !infSeen {
+				n, err = writeSample(
+					name+"_bucket", metric,
+					model.BucketLabel, "+Inf",
+					float64(metric.Histogram.GetSampleCount()),
+					out,
+				)
+				if err != nil {
+					return written, err
+				}
+				written += n
+			}
+			n, err = writeSample(
+				name+"_sum", metric, "", "",
+				metric.Histogram.GetSampleSum(),
+				out,
+			)
+			if err != nil {
+				return written, err
+			}
+			written += n
+			n, err = writeSample(
+				name+"_count", metric, "", "",
+				float64(metric.Histogram.GetSampleCount()),
+				out,
+			)
+		default:
+			return written, fmt.Errorf(
+				"unexpected type in metric %s %s", name, metric,
+			)
+		}
+		written += n
+		if err != nil {
+			return written, err
+		}
+	}
+	return written, nil
+}
+
+// writeSample writes a single sample in text format to out, given the metric
+// name, the metric proto message itself, optionally an additional label name
+// and value (use empty strings if not required), and the value. The function
+// returns the number of bytes written and any error encountered.
+func writeSample(
+	name string,
+	metric *dto.Metric,
+	additionalLabelName, additionalLabelValue string,
+	value float64,
+	out io.Writer,
+) (int, error) {
+	var written int
+	n, err := fmt.Fprint(out, name)
+	written += n
+	if err != nil {
+		return written, err
+	}
+	n, err = labelPairsToText(
+		metric.Label,
+		additionalLabelName, additionalLabelValue,
+		out,
+	)
+	written += n
+	if err != nil {
+		return written, err
+	}
+	n, err = fmt.Fprintf(out, " %v", value)
+	written += n
+	if err != nil {
+		return written, err
+	}
+	if metric.TimestampMs != nil {
+		n, err = fmt.Fprintf(out, " %v", *metric.TimestampMs)
+		written += n
+		if err != nil {
+			return written, err
+		}
+	}
+	n, err = out.Write([]byte{'\n'})
+	written += n
+	if err != nil {
+		return written, err
+	}
+	return written, nil
+}
+
+// labelPairsToText converts a slice of LabelPair proto messages plus the
+// explicitly given additional label pair into text formatted as required by the
+// text format and writes it to 'out'. An empty slice in combination with an
+// empty string 'additionalLabelName' results in nothing being
+// written. Otherwise, the label pairs are written, escaped as required by the
+// text format, and enclosed in '{...}'. The function returns the number of
+// bytes written and any error encountered.
+func labelPairsToText(
+	in []*dto.LabelPair,
+	additionalLabelName, additionalLabelValue string,
+	out io.Writer,
+) (int, error) {
+	if len(in) == 0 && additionalLabelName == "" {
+		return 0, nil
+	}
+	var written int
+	separator := '{'
+	for _, lp := range in {
+		n, err := fmt.Fprintf(
+			out, `%c%s="%s"`,
+			separator, lp.GetName(), escapeString(lp.GetValue(), true),
+		)
+		written += n
+		if err != nil {
+			return written, err
+		}
+		separator = ','
+	}
+	if additionalLabelName != "" {
+		n, err := fmt.Fprintf(
+			out, `%c%s="%s"`,
+			separator, additionalLabelName,
+			escapeString(additionalLabelValue, true),
+		)
+		written += n
+		if err != nil {
+			return written, err
+		}
+	}
+	n, err := out.Write([]byte{'}'})
+	written += n
+	if err != nil {
+		return written, err
+	}
+	return written, nil
+}
+
+var (
+	escape                = strings.NewReplacer("\\", `\\`, "\n", `\n`)
+	escapeWithDoubleQuote = strings.NewReplacer("\\", `\\`, "\n", `\n`, "\"", `\"`)
+)
+
+// escapeString replaces '\' by '\\', new line character by '\n', and - if
+// includeDoubleQuote is true - '"' by '\"'.
+func escapeString(v string, includeDoubleQuote bool) string {
+	if includeDoubleQuote {
+		return escapeWithDoubleQuote.Replace(v)
+	}
+
+	return escape.Replace(v)
+}
diff --git a/vendor/github.com/prometheus/common/expfmt/text_create_test.go b/vendor/github.com/prometheus/common/expfmt/text_create_test.go
new file mode 100644
index 000000000..e4cc5d803
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/text_create_test.go
@@ -0,0 +1,443 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package expfmt
+
+import (
+	"bytes"
+	"math"
+	"strings"
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+func testCreate(t testing.TB) {
+	var scenarios = []struct {
+		in  *dto.MetricFamily
+		out string
+	}{
+		// 0: Counter, NaN as value, timestamp given.
+		{
+			in: &dto.MetricFamily{
+				Name: proto.String("name"),
+				Help: proto.String("two-line\n doc  str\\ing"),
+				Type: dto.MetricType_COUNTER.Enum(),
+				Metric: []*dto.Metric{
+					&dto.Metric{
+						Label: []*dto.LabelPair{
+							&dto.LabelPair{
+								Name:  proto.String("labelname"),
+								Value: proto.String("val1"),
+							},
+							&dto.LabelPair{
+								Name:  proto.String("basename"),
+								Value: proto.String("basevalue"),
+							},
+						},
+						Counter: &dto.Counter{
+							Value: proto.Float64(math.NaN()),
+						},
+					},
+					&dto.Metric{
+						Label: []*dto.LabelPair{
+							&dto.LabelPair{
+								Name:  proto.String("labelname"),
+								Value: proto.String("val2"),
+							},
+							&dto.LabelPair{
+								Name:  proto.String("basename"),
+								Value: proto.String("basevalue"),
+							},
+						},
+						Counter: &dto.Counter{
+							Value: proto.Float64(.23),
+						},
+						TimestampMs: proto.Int64(1234567890),
+					},
+				},
+			},
+			out: `# HELP name two-line\n doc  str\\ing
+# TYPE name counter
+name{labelname="val1",basename="basevalue"} NaN
+name{labelname="val2",basename="basevalue"} 0.23 1234567890
+`,
+		},
+		// 1: Gauge, some escaping required, +Inf as value, multi-byte characters in label values.
+		{
+			in: &dto.MetricFamily{
+				Name: proto.String("gauge_name"),
+				Help: proto.String("gauge\ndoc\nstr\"ing"),
+				Type: dto.MetricType_GAUGE.Enum(),
+				Metric: []*dto.Metric{
+					&dto.Metric{
+						Label: []*dto.LabelPair{
+							&dto.LabelPair{
+								Name:  proto.String("name_1"),
+								Value: proto.String("val with\nnew line"),
+							},
+							&dto.LabelPair{
+								Name:  proto.String("name_2"),
+								Value: proto.String("val with \\backslash and \"quotes\""),
+							},
+						},
+						Gauge: &dto.Gauge{
+							Value: proto.Float64(math.Inf(+1)),
+						},
+					},
+					&dto.Metric{
+						Label: []*dto.LabelPair{
+							&dto.LabelPair{
+								Name:  proto.String("name_1"),
+								Value: proto.String("Björn"),
+							},
+							&dto.LabelPair{
+								Name:  proto.String("name_2"),
+								Value: proto.String("佖佥"),
+							},
+						},
+						Gauge: &dto.Gauge{
+							Value: proto.Float64(3.14E42),
+						},
+					},
+				},
+			},
+			out: `# HELP gauge_name gauge\ndoc\nstr"ing
+# TYPE gauge_name gauge
+gauge_name{name_1="val with\nnew line",name_2="val with \\backslash and \"quotes\""} +Inf
+gauge_name{name_1="Björn",name_2="佖佥"} 3.14e+42
+`,
+		},
+		// 2: Untyped, no help, one sample with no labels and -Inf as value, another sample with one label.
+		{
+			in: &dto.MetricFamily{
+				Name: proto.String("untyped_name"),
+				Type: dto.MetricType_UNTYPED.Enum(),
+				Metric: []*dto.Metric{
+					&dto.Metric{
+						Untyped: &dto.Untyped{
+							Value: proto.Float64(math.Inf(-1)),
+						},
+					},
+					&dto.Metric{
+						Label: []*dto.LabelPair{
+							&dto.LabelPair{
+								Name:  proto.String("name_1"),
+								Value: proto.String("value 1"),
+							},
+						},
+						Untyped: &dto.Untyped{
+							Value: proto.Float64(-1.23e-45),
+						},
+					},
+				},
+			},
+			out: `# TYPE untyped_name untyped
+untyped_name -Inf
+untyped_name{name_1="value 1"} -1.23e-45
+`,
+		},
+		// 3: Summary.
+		{
+			in: &dto.MetricFamily{
+				Name: proto.String("summary_name"),
+				Help: proto.String("summary docstring"),
+				Type: dto.MetricType_SUMMARY.Enum(),
+				Metric: []*dto.Metric{
+					&dto.Metric{
+						Summary: &dto.Summary{
+							SampleCount: proto.Uint64(42),
+							SampleSum:   proto.Float64(-3.4567),
+							Quantile: []*dto.Quantile{
+								&dto.Quantile{
+									Quantile: proto.Float64(0.5),
+									Value:    proto.Float64(-1.23),
+								},
+								&dto.Quantile{
+									Quantile: proto.Float64(0.9),
+									Value:    proto.Float64(.2342354),
+								},
+								&dto.Quantile{
+									Quantile: proto.Float64(0.99),
+									Value:    proto.Float64(0),
+								},
+							},
+						},
+					},
+					&dto.Metric{
+						Label: []*dto.LabelPair{
+							&dto.LabelPair{
+								Name:  proto.String("name_1"),
+								Value: proto.String("value 1"),
+							},
+							&dto.LabelPair{
+								Name:  proto.String("name_2"),
+								Value: proto.String("value 2"),
+							},
+						},
+						Summary: &dto.Summary{
+							SampleCount: proto.Uint64(4711),
+							SampleSum:   proto.Float64(2010.1971),
+							Quantile: []*dto.Quantile{
+								&dto.Quantile{
+									Quantile: proto.Float64(0.5),
+									Value:    proto.Float64(1),
+								},
+								&dto.Quantile{
+									Quantile: proto.Float64(0.9),
+									Value:    proto.Float64(2),
+								},
+								&dto.Quantile{
+									Quantile: proto.Float64(0.99),
+									Value:    proto.Float64(3),
+								},
+							},
+						},
+					},
+				},
+			},
+			out: `# HELP summary_name summary docstring
+# TYPE summary_name summary
+summary_name{quantile="0.5"} -1.23
+summary_name{quantile="0.9"} 0.2342354
+summary_name{quantile="0.99"} 0
+summary_name_sum -3.4567
+summary_name_count 42
+summary_name{name_1="value 1",name_2="value 2",quantile="0.5"} 1
+summary_name{name_1="value 1",name_2="value 2",quantile="0.9"} 2
+summary_name{name_1="value 1",name_2="value 2",quantile="0.99"} 3
+summary_name_sum{name_1="value 1",name_2="value 2"} 2010.1971
+summary_name_count{name_1="value 1",name_2="value 2"} 4711
+`,
+		},
+		// 4: Histogram
+		{
+			in: &dto.MetricFamily{
+				Name: proto.String("request_duration_microseconds"),
+				Help: proto.String("The response latency."),
+				Type: dto.MetricType_HISTOGRAM.Enum(),
+				Metric: []*dto.Metric{
+					&dto.Metric{
+						Histogram: &dto.Histogram{
+							SampleCount: proto.Uint64(2693),
+							SampleSum:   proto.Float64(1756047.3),
+							Bucket: []*dto.Bucket{
+								&dto.Bucket{
+									UpperBound:      proto.Float64(100),
+									CumulativeCount: proto.Uint64(123),
+								},
+								&dto.Bucket{
+									UpperBound:      proto.Float64(120),
+									CumulativeCount: proto.Uint64(412),
+								},
+								&dto.Bucket{
+									UpperBound:      proto.Float64(144),
+									CumulativeCount: proto.Uint64(592),
+								},
+								&dto.Bucket{
+									UpperBound:      proto.Float64(172.8),
+									CumulativeCount: proto.Uint64(1524),
+								},
+								&dto.Bucket{
+									UpperBound:      proto.Float64(math.Inf(+1)),
+									CumulativeCount: proto.Uint64(2693),
+								},
+							},
+						},
+					},
+				},
+			},
+			out: `# HELP request_duration_microseconds The response latency.
+# TYPE request_duration_microseconds histogram
+request_duration_microseconds_bucket{le="100"} 123
+request_duration_microseconds_bucket{le="120"} 412
+request_duration_microseconds_bucket{le="144"} 592
+request_duration_microseconds_bucket{le="172.8"} 1524
+request_duration_microseconds_bucket{le="+Inf"} 2693
+request_duration_microseconds_sum 1.7560473e+06
+request_duration_microseconds_count 2693
+`,
+		},
+		// 5: Histogram with missing +Inf bucket.
+		{
+			in: &dto.MetricFamily{
+				Name: proto.String("request_duration_microseconds"),
+				Help: proto.String("The response latency."),
+				Type: dto.MetricType_HISTOGRAM.Enum(),
+				Metric: []*dto.Metric{
+					&dto.Metric{
+						Histogram: &dto.Histogram{
+							SampleCount: proto.Uint64(2693),
+							SampleSum:   proto.Float64(1756047.3),
+							Bucket: []*dto.Bucket{
+								&dto.Bucket{
+									UpperBound:      proto.Float64(100),
+									CumulativeCount: proto.Uint64(123),
+								},
+								&dto.Bucket{
+									UpperBound:      proto.Float64(120),
+									CumulativeCount: proto.Uint64(412),
+								},
+								&dto.Bucket{
+									UpperBound:      proto.Float64(144),
+									CumulativeCount: proto.Uint64(592),
+								},
+								&dto.Bucket{
+									UpperBound:      proto.Float64(172.8),
+									CumulativeCount: proto.Uint64(1524),
+								},
+							},
+						},
+					},
+				},
+			},
+			out: `# HELP request_duration_microseconds The response latency.
+# TYPE request_duration_microseconds histogram
+request_duration_microseconds_bucket{le="100"} 123
+request_duration_microseconds_bucket{le="120"} 412
+request_duration_microseconds_bucket{le="144"} 592
+request_duration_microseconds_bucket{le="172.8"} 1524
+request_duration_microseconds_bucket{le="+Inf"} 2693
+request_duration_microseconds_sum 1.7560473e+06
+request_duration_microseconds_count 2693
+`,
+		},
+		// 6: No metric type, should result in default type Counter.
+		{
+			in: &dto.MetricFamily{
+				Name: proto.String("name"),
+				Help: proto.String("doc string"),
+				Metric: []*dto.Metric{
+					&dto.Metric{
+						Counter: &dto.Counter{
+							Value: proto.Float64(math.Inf(-1)),
+						},
+					},
+				},
+			},
+			out: `# HELP name doc string
+# TYPE name counter
+name -Inf
+`,
+		},
+	}
+
+	for i, scenario := range scenarios {
+		out := bytes.NewBuffer(make([]byte, 0, len(scenario.out)))
+		n, err := MetricFamilyToText(out, scenario.in)
+		if err != nil {
+			t.Errorf("%d. error: %s", i, err)
+			continue
+		}
+		if expected, got := len(scenario.out), n; expected != got {
+			t.Errorf(
+				"%d. expected %d bytes written, got %d",
+				i, expected, got,
+			)
+		}
+		if expected, got := scenario.out, out.String(); expected != got {
+			t.Errorf(
+				"%d. expected out=%q, got %q",
+				i, expected, got,
+			)
+		}
+	}
+
+}
+
+func TestCreate(t *testing.T) {
+	testCreate(t)
+}
+
+func BenchmarkCreate(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		testCreate(b)
+	}
+}
+
+func testCreateError(t testing.TB) {
+	var scenarios = []struct {
+		in  *dto.MetricFamily
+		err string
+	}{
+		// 0: No metric.
+		{
+			in: &dto.MetricFamily{
+				Name:   proto.String("name"),
+				Help:   proto.String("doc string"),
+				Type:   dto.MetricType_COUNTER.Enum(),
+				Metric: []*dto.Metric{},
+			},
+			err: "MetricFamily has no metrics",
+		},
+		// 1: No metric name.
+		{
+			in: &dto.MetricFamily{
+				Help: proto.String("doc string"),
+				Type: dto.MetricType_UNTYPED.Enum(),
+				Metric: []*dto.Metric{
+					&dto.Metric{
+						Untyped: &dto.Untyped{
+							Value: proto.Float64(math.Inf(-1)),
+						},
+					},
+				},
+			},
+			err: "MetricFamily has no name",
+		},
+		// 2: Wrong type.
+		{
+			in: &dto.MetricFamily{
+				Name: proto.String("name"),
+				Help: proto.String("doc string"),
+				Type: dto.MetricType_COUNTER.Enum(),
+				Metric: []*dto.Metric{
+					&dto.Metric{
+						Untyped: &dto.Untyped{
+							Value: proto.Float64(math.Inf(-1)),
+						},
+					},
+				},
+			},
+			err: "expected counter in metric",
+		},
+	}
+
+	for i, scenario := range scenarios {
+		var out bytes.Buffer
+		_, err := MetricFamilyToText(&out, scenario.in)
+		if err == nil {
+			t.Errorf("%d. expected error, got nil", i)
+			continue
+		}
+		if expected, got := scenario.err, err.Error(); strings.Index(got, expected) != 0 {
+			t.Errorf(
+				"%d. expected error starting with %q, got %q",
+				i, expected, got,
+			)
+		}
+	}
+
+}
+
+func TestCreateError(t *testing.T) {
+	testCreateError(t)
+}
+
+func BenchmarkCreateError(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		testCreateError(b)
+	}
+}
diff --git a/vendor/github.com/prometheus/common/expfmt/text_parse.go b/vendor/github.com/prometheus/common/expfmt/text_parse.go
new file mode 100644
index 000000000..ef9a15077
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/text_parse.go
@@ -0,0 +1,753 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package expfmt
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io"
+	"math"
+	"strconv"
+	"strings"
+
+	dto "github.com/prometheus/client_model/go"
+
+	"github.com/golang/protobuf/proto"
+	"github.com/prometheus/common/model"
+)
+
+// A stateFn is a function that represents a state in a state machine. By
+// executing it, the state is progressed to the next state. The stateFn returns
+// another stateFn, which represents the new state. The end state is represented
+// by nil.
+type stateFn func() stateFn
+
+// ParseError signals errors while parsing the simple and flat text-based
+// exchange format.
+type ParseError struct {
+	Line int
+	Msg  string
+}
+
+// Error implements the error interface.
+func (e ParseError) Error() string {
+	return fmt.Sprintf("text format parsing error in line %d: %s", e.Line, e.Msg)
+}
+
+// TextParser is used to parse the simple and flat text-based exchange format. Its
+// zero value is ready to use.
+type TextParser struct {
+	metricFamiliesByName map[string]*dto.MetricFamily
+	buf                  *bufio.Reader // Where the parsed input is read through.
+	err                  error         // Most recent error.
+	lineCount            int           // Tracks the line count for error messages.
+	currentByte          byte          // The most recent byte read.
+	currentToken         bytes.Buffer  // Re-used each time a token has to be gathered from multiple bytes.
+	currentMF            *dto.MetricFamily
+	currentMetric        *dto.Metric
+	currentLabelPair     *dto.LabelPair
+
+	// The remaining member variables are only used for summaries/histograms.
+	currentLabels map[string]string // All labels including '__name__' but excluding 'quantile'/'le'
+	// Summary specific.
+	summaries       map[uint64]*dto.Metric // Key is created with LabelsToSignature.
+	currentQuantile float64
+	// Histogram specific.
+	histograms    map[uint64]*dto.Metric // Key is created with LabelsToSignature.
+	currentBucket float64
+	// These tell us if the currently processed line ends on '_count' or
+	// '_sum' respectively and belong to a summary/histogram, representing the sample
+	// count and sum of that summary/histogram.
+	currentIsSummaryCount, currentIsSummarySum     bool
+	currentIsHistogramCount, currentIsHistogramSum bool
+}
+
+// TextToMetricFamilies reads 'in' as the simple and flat text-based exchange
+// format and creates MetricFamily proto messages. It returns the MetricFamily
+// proto messages in a map where the metric names are the keys, along with any
+// error encountered.
+//
+// If the input contains duplicate metrics (i.e. lines with the same metric name
+// and exactly the same label set), the resulting MetricFamily will contain
+// duplicate Metric proto messages. Similar is true for duplicate label
+// names. Checks for duplicates have to be performed separately, if required.
+// Also note that neither the metrics within each MetricFamily are sorted nor
+// the label pairs within each Metric. Sorting is not required for the most
+// frequent use of this method, which is sample ingestion in the Prometheus
+// server. However, for presentation purposes, you might want to sort the
+// metrics, and in some cases, you must sort the labels, e.g. for consumption by
+// the metric family injection hook of the Prometheus registry.
+//
+// Summaries and histograms are rather special beasts. You would probably not
+// use them in the simple text format anyway. This method can deal with
+// summaries and histograms if they are presented in exactly the way the
+// text.Create function creates them.
+//
+// This method must not be called concurrently. If you want to parse different
+// input concurrently, instantiate a separate Parser for each goroutine.
+func (p *TextParser) TextToMetricFamilies(in io.Reader) (map[string]*dto.MetricFamily, error) {
+	p.reset(in)
+	for nextState := p.startOfLine; nextState != nil; nextState = nextState() {
+		// Magic happens here...
+	}
+	// Get rid of empty metric families.
+	for k, mf := range p.metricFamiliesByName {
+		if len(mf.GetMetric()) == 0 {
+			delete(p.metricFamiliesByName, k)
+		}
+	}
+	// If p.err is io.EOF now, we have run into a premature end of the input
+	// stream. Turn this error into something nicer and more
+	// meaningful. (io.EOF is often used as a signal for the legitimate end
+	// of an input stream.)
+	if p.err == io.EOF {
+		p.parseError("unexpected end of input stream")
+	}
+	return p.metricFamiliesByName, p.err
+}
+
+func (p *TextParser) reset(in io.Reader) {
+	p.metricFamiliesByName = map[string]*dto.MetricFamily{}
+	if p.buf == nil {
+		p.buf = bufio.NewReader(in)
+	} else {
+		p.buf.Reset(in)
+	}
+	p.err = nil
+	p.lineCount = 0
+	if p.summaries == nil || len(p.summaries) > 0 {
+		p.summaries = map[uint64]*dto.Metric{}
+	}
+	if p.histograms == nil || len(p.histograms) > 0 {
+		p.histograms = map[uint64]*dto.Metric{}
+	}
+	p.currentQuantile = math.NaN()
+	p.currentBucket = math.NaN()
+}
+
+// startOfLine represents the state where the next byte read from p.buf is the
+// start of a line (or whitespace leading up to it).
+func (p *TextParser) startOfLine() stateFn {
+	p.lineCount++
+	if p.skipBlankTab(); p.err != nil {
+		// End of input reached. This is the only case where
+		// that is not an error but a signal that we are done.
+		p.err = nil
+		return nil
+	}
+	switch p.currentByte {
+	case '#':
+		return p.startComment
+	case '\n':
+		return p.startOfLine // Empty line, start the next one.
+	}
+	return p.readingMetricName
+}
+
+// startComment represents the state where the next byte read from p.buf is the
+// start of a comment (or whitespace leading up to it).
+func (p *TextParser) startComment() stateFn {
+	if p.skipBlankTab(); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	if p.currentByte == '\n' {
+		return p.startOfLine
+	}
+	if p.readTokenUntilWhitespace(); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	// If we have hit the end of line already, there is nothing left
+	// to do. This is not considered a syntax error.
+	if p.currentByte == '\n' {
+		return p.startOfLine
+	}
+	keyword := p.currentToken.String()
+	if keyword != "HELP" && keyword != "TYPE" {
+		// Generic comment, ignore by fast forwarding to end of line.
+		for p.currentByte != '\n' {
+			if p.currentByte, p.err = p.buf.ReadByte(); p.err != nil {
+				return nil // Unexpected end of input.
+			}
+		}
+		return p.startOfLine
+	}
+	// There is something. Next has to be a metric name.
+	if p.skipBlankTab(); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	if p.readTokenAsMetricName(); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	if p.currentByte == '\n' {
+		// At the end of the line already.
+		// Again, this is not considered a syntax error.
+		return p.startOfLine
+	}
+	if !isBlankOrTab(p.currentByte) {
+		p.parseError("invalid metric name in comment")
+		return nil
+	}
+	p.setOrCreateCurrentMF()
+	if p.skipBlankTab(); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	if p.currentByte == '\n' {
+		// At the end of the line already.
+		// Again, this is not considered a syntax error.
+		return p.startOfLine
+	}
+	switch keyword {
+	case "HELP":
+		return p.readingHelp
+	case "TYPE":
+		return p.readingType
+	}
+	panic(fmt.Sprintf("code error: unexpected keyword %q", keyword))
+}
+
+// readingMetricName represents the state where the last byte read (now in
+// p.currentByte) is the first byte of a metric name.
+func (p *TextParser) readingMetricName() stateFn {
+	if p.readTokenAsMetricName(); p.err != nil {
+		return nil
+	}
+	if p.currentToken.Len() == 0 {
+		p.parseError("invalid metric name")
+		return nil
+	}
+	p.setOrCreateCurrentMF()
+	// Now is the time to fix the type if it hasn't happened yet.
+	if p.currentMF.Type == nil {
+		p.currentMF.Type = dto.MetricType_UNTYPED.Enum()
+	}
+	p.currentMetric = &dto.Metric{}
+	// Do not append the newly created currentMetric to
+	// currentMF.Metric right now. First wait if this is a summary,
+	// and the metric exists already, which we can only know after
+	// having read all the labels.
+	if p.skipBlankTabIfCurrentBlankTab(); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	return p.readingLabels
+}
+
+// readingLabels represents the state where the last byte read (now in
+// p.currentByte) is either the first byte of the label set (i.e. a '{'), or the
+// first byte of the value (otherwise).
+func (p *TextParser) readingLabels() stateFn {
+	// Summaries/histograms are special. We have to reset the
+	// currentLabels map, currentQuantile and currentBucket before starting to
+	// read labels.
+	if p.currentMF.GetType() == dto.MetricType_SUMMARY || p.currentMF.GetType() == dto.MetricType_HISTOGRAM {
+		p.currentLabels = map[string]string{}
+		p.currentLabels[string(model.MetricNameLabel)] = p.currentMF.GetName()
+		p.currentQuantile = math.NaN()
+		p.currentBucket = math.NaN()
+	}
+	if p.currentByte != '{' {
+		return p.readingValue
+	}
+	return p.startLabelName
+}
+
+// startLabelName represents the state where the next byte read from p.buf is
+// the start of a label name (or whitespace leading up to it).
+func (p *TextParser) startLabelName() stateFn {
+	if p.skipBlankTab(); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	if p.currentByte == '}' {
+		if p.skipBlankTab(); p.err != nil {
+			return nil // Unexpected end of input.
+		}
+		return p.readingValue
+	}
+	if p.readTokenAsLabelName(); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	if p.currentToken.Len() == 0 {
+		p.parseError(fmt.Sprintf("invalid label name for metric %q", p.currentMF.GetName()))
+		return nil
+	}
+	p.currentLabelPair = &dto.LabelPair{Name: proto.String(p.currentToken.String())}
+	if p.currentLabelPair.GetName() == string(model.MetricNameLabel) {
+		p.parseError(fmt.Sprintf("label name %q is reserved", model.MetricNameLabel))
+		return nil
+	}
+	// Special summary/histogram treatment. Don't add 'quantile' and 'le'
+	// labels to 'real' labels.
+	if !(p.currentMF.GetType() == dto.MetricType_SUMMARY && p.currentLabelPair.GetName() == model.QuantileLabel) &&
+		!(p.currentMF.GetType() == dto.MetricType_HISTOGRAM && p.currentLabelPair.GetName() == model.BucketLabel) {
+		p.currentMetric.Label = append(p.currentMetric.Label, p.currentLabelPair)
+	}
+	if p.skipBlankTabIfCurrentBlankTab(); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	if p.currentByte != '=' {
+		p.parseError(fmt.Sprintf("expected '=' after label name, found %q", p.currentByte))
+		return nil
+	}
+	return p.startLabelValue
+}
+
+// startLabelValue represents the state where the next byte read from p.buf is
+// the start of a (quoted) label value (or whitespace leading up to it).
+func (p *TextParser) startLabelValue() stateFn {
+	if p.skipBlankTab(); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	if p.currentByte != '"' {
+		p.parseError(fmt.Sprintf("expected '\"' at start of label value, found %q", p.currentByte))
+		return nil
+	}
+	if p.readTokenAsLabelValue(); p.err != nil {
+		return nil
+	}
+	p.currentLabelPair.Value = proto.String(p.currentToken.String())
+	// Special treatment of summaries:
+	// - Quantile labels are special, will result in dto.Quantile later.
+	// - Other labels have to be added to currentLabels for signature calculation.
+	if p.currentMF.GetType() == dto.MetricType_SUMMARY {
+		if p.currentLabelPair.GetName() == model.QuantileLabel {
+			if p.currentQuantile, p.err = strconv.ParseFloat(p.currentLabelPair.GetValue(), 64); p.err != nil {
+				// Create a more helpful error message.
+				p.parseError(fmt.Sprintf("expected float as value for 'quantile' label, got %q", p.currentLabelPair.GetValue()))
+				return nil
+			}
+		} else {
+			p.currentLabels[p.currentLabelPair.GetName()] = p.currentLabelPair.GetValue()
+		}
+	}
+	// Similar special treatment of histograms.
+	if p.currentMF.GetType() == dto.MetricType_HISTOGRAM {
+		if p.currentLabelPair.GetName() == model.BucketLabel {
+			if p.currentBucket, p.err = strconv.ParseFloat(p.currentLabelPair.GetValue(), 64); p.err != nil {
+				// Create a more helpful error message.
+				p.parseError(fmt.Sprintf("expected float as value for 'le' label, got %q", p.currentLabelPair.GetValue()))
+				return nil
+			}
+		} else {
+			p.currentLabels[p.currentLabelPair.GetName()] = p.currentLabelPair.GetValue()
+		}
+	}
+	if p.skipBlankTab(); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	switch p.currentByte {
+	case ',':
+		return p.startLabelName
+
+	case '}':
+		if p.skipBlankTab(); p.err != nil {
+			return nil // Unexpected end of input.
+		}
+		return p.readingValue
+	default:
+		p.parseError(fmt.Sprintf("unexpected end of label value %q", p.currentLabelPair.Value))
+		return nil
+	}
+}
+
+// readingValue represents the state where the last byte read (now in
+// p.currentByte) is the first byte of the sample value (i.e. a float).
+func (p *TextParser) readingValue() stateFn {
+	// When we are here, we have read all the labels, so for the
+	// special case of a summary/histogram, we can finally find out
+	// if the metric already exists.
+	if p.currentMF.GetType() == dto.MetricType_SUMMARY {
+		signature := model.LabelsToSignature(p.currentLabels)
+		if summary := p.summaries[signature]; summary != nil {
+			p.currentMetric = summary
+		} else {
+			p.summaries[signature] = p.currentMetric
+			p.currentMF.Metric = append(p.currentMF.Metric, p.currentMetric)
+		}
+	} else if p.currentMF.GetType() == dto.MetricType_HISTOGRAM {
+		signature := model.LabelsToSignature(p.currentLabels)
+		if histogram := p.histograms[signature]; histogram != nil {
+			p.currentMetric = histogram
+		} else {
+			p.histograms[signature] = p.currentMetric
+			p.currentMF.Metric = append(p.currentMF.Metric, p.currentMetric)
+		}
+	} else {
+		p.currentMF.Metric = append(p.currentMF.Metric, p.currentMetric)
+	}
+	if p.readTokenUntilWhitespace(); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	value, err := strconv.ParseFloat(p.currentToken.String(), 64)
+	if err != nil {
+		// Create a more helpful error message.
+		p.parseError(fmt.Sprintf("expected float as value, got %q", p.currentToken.String()))
+		return nil
+	}
+	switch p.currentMF.GetType() {
+	case dto.MetricType_COUNTER:
+		p.currentMetric.Counter = &dto.Counter{Value: proto.Float64(value)}
+	case dto.MetricType_GAUGE:
+		p.currentMetric.Gauge = &dto.Gauge{Value: proto.Float64(value)}
+	case dto.MetricType_UNTYPED:
+		p.currentMetric.Untyped = &dto.Untyped{Value: proto.Float64(value)}
+	case dto.MetricType_SUMMARY:
+		// *sigh*
+		if p.currentMetric.Summary == nil {
+			p.currentMetric.Summary = &dto.Summary{}
+		}
+		switch {
+		case p.currentIsSummaryCount:
+			p.currentMetric.Summary.SampleCount = proto.Uint64(uint64(value))
+		case p.currentIsSummarySum:
+			p.currentMetric.Summary.SampleSum = proto.Float64(value)
+		case !math.IsNaN(p.currentQuantile):
+			p.currentMetric.Summary.Quantile = append(
+				p.currentMetric.Summary.Quantile,
+				&dto.Quantile{
+					Quantile: proto.Float64(p.currentQuantile),
+					Value:    proto.Float64(value),
+				},
+			)
+		}
+	case dto.MetricType_HISTOGRAM:
+		// *sigh*
+		if p.currentMetric.Histogram == nil {
+			p.currentMetric.Histogram = &dto.Histogram{}
+		}
+		switch {
+		case p.currentIsHistogramCount:
+			p.currentMetric.Histogram.SampleCount = proto.Uint64(uint64(value))
+		case p.currentIsHistogramSum:
+			p.currentMetric.Histogram.SampleSum = proto.Float64(value)
+		case !math.IsNaN(p.currentBucket):
+			p.currentMetric.Histogram.Bucket = append(
+				p.currentMetric.Histogram.Bucket,
+				&dto.Bucket{
+					UpperBound:      proto.Float64(p.currentBucket),
+					CumulativeCount: proto.Uint64(uint64(value)),
+				},
+			)
+		}
+	default:
+		p.err = fmt.Errorf("unexpected type for metric name %q", p.currentMF.GetName())
+	}
+	if p.currentByte == '\n' {
+		return p.startOfLine
+	}
+	return p.startTimestamp
+}
+
+// startTimestamp represents the state where the next byte read from p.buf is
+// the start of the timestamp (or whitespace leading up to it).
+func (p *TextParser) startTimestamp() stateFn {
+	if p.skipBlankTab(); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	if p.readTokenUntilWhitespace(); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	timestamp, err := strconv.ParseInt(p.currentToken.String(), 10, 64)
+	if err != nil {
+		// Create a more helpful error message.
+		p.parseError(fmt.Sprintf("expected integer as timestamp, got %q", p.currentToken.String()))
+		return nil
+	}
+	p.currentMetric.TimestampMs = proto.Int64(timestamp)
+	if p.readTokenUntilNewline(false); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	if p.currentToken.Len() > 0 {
+		p.parseError(fmt.Sprintf("spurious string after timestamp: %q", p.currentToken.String()))
+		return nil
+	}
+	return p.startOfLine
+}
+
+// readingHelp represents the state where the last byte read (now in
+// p.currentByte) is the first byte of the docstring after 'HELP'.
+func (p *TextParser) readingHelp() stateFn {
+	if p.currentMF.Help != nil {
+		p.parseError(fmt.Sprintf("second HELP line for metric name %q", p.currentMF.GetName()))
+		return nil
+	}
+	// Rest of line is the docstring.
+	if p.readTokenUntilNewline(true); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	p.currentMF.Help = proto.String(p.currentToken.String())
+	return p.startOfLine
+}
+
+// readingType represents the state where the last byte read (now in
+// p.currentByte) is the first byte of the type hint after 'HELP'.
+func (p *TextParser) readingType() stateFn {
+	if p.currentMF.Type != nil {
+		p.parseError(fmt.Sprintf("second TYPE line for metric name %q, or TYPE reported after samples", p.currentMF.GetName()))
+		return nil
+	}
+	// Rest of line is the type.
+	if p.readTokenUntilNewline(false); p.err != nil {
+		return nil // Unexpected end of input.
+	}
+	metricType, ok := dto.MetricType_value[strings.ToUpper(p.currentToken.String())]
+	if !ok {
+		p.parseError(fmt.Sprintf("unknown metric type %q", p.currentToken.String()))
+		return nil
+	}
+	p.currentMF.Type = dto.MetricType(metricType).Enum()
+	return p.startOfLine
+}
+
+// parseError sets p.err to a ParseError at the current line with the given
+// message.
+func (p *TextParser) parseError(msg string) {
+	p.err = ParseError{
+		Line: p.lineCount,
+		Msg:  msg,
+	}
+}
+
+// skipBlankTab reads (and discards) bytes from p.buf until it encounters a byte
+// that is neither ' ' nor '\t'. That byte is left in p.currentByte.
+func (p *TextParser) skipBlankTab() {
+	for {
+		if p.currentByte, p.err = p.buf.ReadByte(); p.err != nil || !isBlankOrTab(p.currentByte) {
+			return
+		}
+	}
+}
+
+// skipBlankTabIfCurrentBlankTab works exactly as skipBlankTab but doesn't do
+// anything if p.currentByte is neither ' ' nor '\t'.
+func (p *TextParser) skipBlankTabIfCurrentBlankTab() {
+	if isBlankOrTab(p.currentByte) {
+		p.skipBlankTab()
+	}
+}
+
+// readTokenUntilWhitespace copies bytes from p.buf into p.currentToken.  The
+// first byte considered is the byte already read (now in p.currentByte).  The
+// first whitespace byte encountered is still copied into p.currentByte, but not
+// into p.currentToken.
+func (p *TextParser) readTokenUntilWhitespace() {
+	p.currentToken.Reset()
+	for p.err == nil && !isBlankOrTab(p.currentByte) && p.currentByte != '\n' {
+		p.currentToken.WriteByte(p.currentByte)
+		p.currentByte, p.err = p.buf.ReadByte()
+	}
+}
+
+// readTokenUntilNewline copies bytes from p.buf into p.currentToken.  The first
+// byte considered is the byte already read (now in p.currentByte).  The first
+// newline byte encountered is still copied into p.currentByte, but not into
+// p.currentToken. If recognizeEscapeSequence is true, two escape sequences are
+// recognized: '\\' tranlates into '\', and '\n' into a line-feed character. All
+// other escape sequences are invalid and cause an error.
+func (p *TextParser) readTokenUntilNewline(recognizeEscapeSequence bool) {
+	p.currentToken.Reset()
+	escaped := false
+	for p.err == nil {
+		if recognizeEscapeSequence && escaped {
+			switch p.currentByte {
+			case '\\':
+				p.currentToken.WriteByte(p.currentByte)
+			case 'n':
+				p.currentToken.WriteByte('\n')
+			default:
+				p.parseError(fmt.Sprintf("invalid escape sequence '\\%c'", p.currentByte))
+				return
+			}
+			escaped = false
+		} else {
+			switch p.currentByte {
+			case '\n':
+				return
+			case '\\':
+				escaped = true
+			default:
+				p.currentToken.WriteByte(p.currentByte)
+			}
+		}
+		p.currentByte, p.err = p.buf.ReadByte()
+	}
+}
+
+// readTokenAsMetricName copies a metric name from p.buf into p.currentToken.
+// The first byte considered is the byte already read (now in p.currentByte).
+// The first byte not part of a metric name is still copied into p.currentByte,
+// but not into p.currentToken.
+func (p *TextParser) readTokenAsMetricName() {
+	p.currentToken.Reset()
+	if !isValidMetricNameStart(p.currentByte) {
+		return
+	}
+	for {
+		p.currentToken.WriteByte(p.currentByte)
+		p.currentByte, p.err = p.buf.ReadByte()
+		if p.err != nil || !isValidMetricNameContinuation(p.currentByte) {
+			return
+		}
+	}
+}
+
+// readTokenAsLabelName copies a label name from p.buf into p.currentToken.
+// The first byte considered is the byte already read (now in p.currentByte).
+// The first byte not part of a label name is still copied into p.currentByte,
+// but not into p.currentToken.
+func (p *TextParser) readTokenAsLabelName() {
+	p.currentToken.Reset()
+	if !isValidLabelNameStart(p.currentByte) {
+		return
+	}
+	for {
+		p.currentToken.WriteByte(p.currentByte)
+		p.currentByte, p.err = p.buf.ReadByte()
+		if p.err != nil || !isValidLabelNameContinuation(p.currentByte) {
+			return
+		}
+	}
+}
+
+// readTokenAsLabelValue copies a label value from p.buf into p.currentToken.
+// In contrast to the other 'readTokenAs...' functions, which start with the
+// last read byte in p.currentByte, this method ignores p.currentByte and starts
+// with reading a new byte from p.buf. The first byte not part of a label value
+// is still copied into p.currentByte, but not into p.currentToken.
+func (p *TextParser) readTokenAsLabelValue() {
+	p.currentToken.Reset()
+	escaped := false
+	for {
+		if p.currentByte, p.err = p.buf.ReadByte(); p.err != nil {
+			return
+		}
+		if escaped {
+			switch p.currentByte {
+			case '"', '\\':
+				p.currentToken.WriteByte(p.currentByte)
+			case 'n':
+				p.currentToken.WriteByte('\n')
+			default:
+				p.parseError(fmt.Sprintf("invalid escape sequence '\\%c'", p.currentByte))
+				return
+			}
+			escaped = false
+			continue
+		}
+		switch p.currentByte {
+		case '"':
+			return
+		case '\n':
+			p.parseError(fmt.Sprintf("label value %q contains unescaped new-line", p.currentToken.String()))
+			return
+		case '\\':
+			escaped = true
+		default:
+			p.currentToken.WriteByte(p.currentByte)
+		}
+	}
+}
+
+func (p *TextParser) setOrCreateCurrentMF() {
+	p.currentIsSummaryCount = false
+	p.currentIsSummarySum = false
+	p.currentIsHistogramCount = false
+	p.currentIsHistogramSum = false
+	name := p.currentToken.String()
+	if p.currentMF = p.metricFamiliesByName[name]; p.currentMF != nil {
+		return
+	}
+	// Try out if this is a _sum or _count for a summary/histogram.
+	summaryName := summaryMetricName(name)
+	if p.currentMF = p.metricFamiliesByName[summaryName]; p.currentMF != nil {
+		if p.currentMF.GetType() == dto.MetricType_SUMMARY {
+			if isCount(name) {
+				p.currentIsSummaryCount = true
+			}
+			if isSum(name) {
+				p.currentIsSummarySum = true
+			}
+			return
+		}
+	}
+	histogramName := histogramMetricName(name)
+	if p.currentMF = p.metricFamiliesByName[histogramName]; p.currentMF != nil {
+		if p.currentMF.GetType() == dto.MetricType_HISTOGRAM {
+			if isCount(name) {
+				p.currentIsHistogramCount = true
+			}
+			if isSum(name) {
+				p.currentIsHistogramSum = true
+			}
+			return
+		}
+	}
+	p.currentMF = &dto.MetricFamily{Name: proto.String(name)}
+	p.metricFamiliesByName[name] = p.currentMF
+}
+
+func isValidLabelNameStart(b byte) bool {
+	return (b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || b == '_'
+}
+
+func isValidLabelNameContinuation(b byte) bool {
+	return isValidLabelNameStart(b) || (b >= '0' && b <= '9')
+}
+
+func isValidMetricNameStart(b byte) bool {
+	return isValidLabelNameStart(b) || b == ':'
+}
+
+func isValidMetricNameContinuation(b byte) bool {
+	return isValidLabelNameContinuation(b) || b == ':'
+}
+
+func isBlankOrTab(b byte) bool {
+	return b == ' ' || b == '\t'
+}
+
+func isCount(name string) bool {
+	return len(name) > 6 && name[len(name)-6:] == "_count"
+}
+
+func isSum(name string) bool {
+	return len(name) > 4 && name[len(name)-4:] == "_sum"
+}
+
+func isBucket(name string) bool {
+	return len(name) > 7 && name[len(name)-7:] == "_bucket"
+}
+
+func summaryMetricName(name string) string {
+	switch {
+	case isCount(name):
+		return name[:len(name)-6]
+	case isSum(name):
+		return name[:len(name)-4]
+	default:
+		return name
+	}
+}
+
+func histogramMetricName(name string) string {
+	switch {
+	case isCount(name):
+		return name[:len(name)-6]
+	case isSum(name):
+		return name[:len(name)-4]
+	case isBucket(name):
+		return name[:len(name)-7]
+	default:
+		return name
+	}
+}
diff --git a/vendor/github.com/prometheus/common/expfmt/text_parse_test.go b/vendor/github.com/prometheus/common/expfmt/text_parse_test.go
new file mode 100644
index 000000000..7e7388ce9
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/text_parse_test.go
@@ -0,0 +1,588 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package expfmt
+
+import (
+	"math"
+	"strings"
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+	dto "github.com/prometheus/client_model/go"
+)
+
+func testTextParse(t testing.TB) {
+	var scenarios = []struct {
+		in  string
+		out []*dto.MetricFamily
+	}{
+		// 0: Empty lines as input.
+		{
+			in: `
+
+`,
+			out: []*dto.MetricFamily{},
+		},
+		// 1: Minimal case.
+		{
+			in: `
+minimal_metric 1.234
+another_metric -3e3 103948
+# Even that:
+no_labels{} 3
+# HELP line for non-existing metric will be ignored.
+`,
+			out: []*dto.MetricFamily{
+				&dto.MetricFamily{
+					Name: proto.String("minimal_metric"),
+					Type: dto.MetricType_UNTYPED.Enum(),
+					Metric: []*dto.Metric{
+						&dto.Metric{
+							Untyped: &dto.Untyped{
+								Value: proto.Float64(1.234),
+							},
+						},
+					},
+				},
+				&dto.MetricFamily{
+					Name: proto.String("another_metric"),
+					Type: dto.MetricType_UNTYPED.Enum(),
+					Metric: []*dto.Metric{
+						&dto.Metric{
+							Untyped: &dto.Untyped{
+								Value: proto.Float64(-3e3),
+							},
+							TimestampMs: proto.Int64(103948),
+						},
+					},
+				},
+				&dto.MetricFamily{
+					Name: proto.String("no_labels"),
+					Type: dto.MetricType_UNTYPED.Enum(),
+					Metric: []*dto.Metric{
+						&dto.Metric{
+							Untyped: &dto.Untyped{
+								Value: proto.Float64(3),
+							},
+						},
+					},
+				},
+			},
+		},
+		// 2: Counters & gauges, docstrings, various whitespace, escape sequences.
+		{
+			in: `
+# A normal comment.
+#
+# TYPE name counter
+name{labelname="val1",basename="basevalue"} NaN
+name {labelname="val2",basename="base\"v\\al\nue"} 0.23 1234567890
+# HELP name two-line\n doc  str\\ing
+
+ # HELP  name2  	doc str"ing 2
+  #    TYPE    name2 gauge
+name2{labelname="val2"	,basename   =   "basevalue2"		} +Inf 54321
+name2{ labelname = "val1" , }-Inf
+`,
+			out: []*dto.MetricFamily{
+				&dto.MetricFamily{
+					Name: proto.String("name"),
+					Help: proto.String("two-line\n doc  str\\ing"),
+					Type: dto.MetricType_COUNTER.Enum(),
+					Metric: []*dto.Metric{
+						&dto.Metric{
+							Label: []*dto.LabelPair{
+								&dto.LabelPair{
+									Name:  proto.String("labelname"),
+									Value: proto.String("val1"),
+								},
+								&dto.LabelPair{
+									Name:  proto.String("basename"),
+									Value: proto.String("basevalue"),
+								},
+							},
+							Counter: &dto.Counter{
+								Value: proto.Float64(math.NaN()),
+							},
+						},
+						&dto.Metric{
+							Label: []*dto.LabelPair{
+								&dto.LabelPair{
+									Name:  proto.String("labelname"),
+									Value: proto.String("val2"),
+								},
+								&dto.LabelPair{
+									Name:  proto.String("basename"),
+									Value: proto.String("base\"v\\al\nue"),
+								},
+							},
+							Counter: &dto.Counter{
+								Value: proto.Float64(.23),
+							},
+							TimestampMs: proto.Int64(1234567890),
+						},
+					},
+				},
+				&dto.MetricFamily{
+					Name: proto.String("name2"),
+					Help: proto.String("doc str\"ing 2"),
+					Type: dto.MetricType_GAUGE.Enum(),
+					Metric: []*dto.Metric{
+						&dto.Metric{
+							Label: []*dto.LabelPair{
+								&dto.LabelPair{
+									Name:  proto.String("labelname"),
+									Value: proto.String("val2"),
+								},
+								&dto.LabelPair{
+									Name:  proto.String("basename"),
+									Value: proto.String("basevalue2"),
+								},
+							},
+							Gauge: &dto.Gauge{
+								Value: proto.Float64(math.Inf(+1)),
+							},
+							TimestampMs: proto.Int64(54321),
+						},
+						&dto.Metric{
+							Label: []*dto.LabelPair{
+								&dto.LabelPair{
+									Name:  proto.String("labelname"),
+									Value: proto.String("val1"),
+								},
+							},
+							Gauge: &dto.Gauge{
+								Value: proto.Float64(math.Inf(-1)),
+							},
+						},
+					},
+				},
+			},
+		},
+		// 3: The evil summary, mixed with other types and funny comments.
+		{
+			in: `
+# TYPE my_summary summary
+my_summary{n1="val1",quantile="0.5"} 110
+decoy -1 -2
+my_summary{n1="val1",quantile="0.9"} 140 1
+my_summary_count{n1="val1"} 42
+# Latest timestamp wins in case of a summary.
+my_summary_sum{n1="val1"} 4711 2
+fake_sum{n1="val1"} 2001
+# TYPE another_summary summary
+another_summary_count{n2="val2",n1="val1"} 20
+my_summary_count{n2="val2",n1="val1"} 5 5
+another_summary{n1="val1",n2="val2",quantile=".3"} -1.2
+my_summary_sum{n1="val2"} 08 15
+my_summary{n1="val3", quantile="0.2"} 4711
+  my_summary{n1="val1",n2="val2",quantile="-12.34",} NaN
+# some
+# funny comments
+# HELP 
+# HELP
+# HELP my_summary
+# HELP my_summary 
+`,
+			out: []*dto.MetricFamily{
+				&dto.MetricFamily{
+					Name: proto.String("fake_sum"),
+					Type: dto.MetricType_UNTYPED.Enum(),
+					Metric: []*dto.Metric{
+						&dto.Metric{
+							Label: []*dto.LabelPair{
+								&dto.LabelPair{
+									Name:  proto.String("n1"),
+									Value: proto.String("val1"),
+								},
+							},
+							Untyped: &dto.Untyped{
+								Value: proto.Float64(2001),
+							},
+						},
+					},
+				},
+				&dto.MetricFamily{
+					Name: proto.String("decoy"),
+					Type: dto.MetricType_UNTYPED.Enum(),
+					Metric: []*dto.Metric{
+						&dto.Metric{
+							Untyped: &dto.Untyped{
+								Value: proto.Float64(-1),
+							},
+							TimestampMs: proto.Int64(-2),
+						},
+					},
+				},
+				&dto.MetricFamily{
+					Name: proto.String("my_summary"),
+					Type: dto.MetricType_SUMMARY.Enum(),
+					Metric: []*dto.Metric{
+						&dto.Metric{
+							Label: []*dto.LabelPair{
+								&dto.LabelPair{
+									Name:  proto.String("n1"),
+									Value: proto.String("val1"),
+								},
+							},
+							Summary: &dto.Summary{
+								SampleCount: proto.Uint64(42),
+								SampleSum:   proto.Float64(4711),
+								Quantile: []*dto.Quantile{
+									&dto.Quantile{
+										Quantile: proto.Float64(0.5),
+										Value:    proto.Float64(110),
+									},
+									&dto.Quantile{
+										Quantile: proto.Float64(0.9),
+										Value:    proto.Float64(140),
+									},
+								},
+							},
+							TimestampMs: proto.Int64(2),
+						},
+						&dto.Metric{
+							Label: []*dto.LabelPair{
+								&dto.LabelPair{
+									Name:  proto.String("n2"),
+									Value: proto.String("val2"),
+								},
+								&dto.LabelPair{
+									Name:  proto.String("n1"),
+									Value: proto.String("val1"),
+								},
+							},
+							Summary: &dto.Summary{
+								SampleCount: proto.Uint64(5),
+								Quantile: []*dto.Quantile{
+									&dto.Quantile{
+										Quantile: proto.Float64(-12.34),
+										Value:    proto.Float64(math.NaN()),
+									},
+								},
+							},
+							TimestampMs: proto.Int64(5),
+						},
+						&dto.Metric{
+							Label: []*dto.LabelPair{
+								&dto.LabelPair{
+									Name:  proto.String("n1"),
+									Value: proto.String("val2"),
+								},
+							},
+							Summary: &dto.Summary{
+								SampleSum: proto.Float64(8),
+							},
+							TimestampMs: proto.Int64(15),
+						},
+						&dto.Metric{
+							Label: []*dto.LabelPair{
+								&dto.LabelPair{
+									Name:  proto.String("n1"),
+									Value: proto.String("val3"),
+								},
+							},
+							Summary: &dto.Summary{
+								Quantile: []*dto.Quantile{
+									&dto.Quantile{
+										Quantile: proto.Float64(0.2),
+										Value:    proto.Float64(4711),
+									},
+								},
+							},
+						},
+					},
+				},
+				&dto.MetricFamily{
+					Name: proto.String("another_summary"),
+					Type: dto.MetricType_SUMMARY.Enum(),
+					Metric: []*dto.Metric{
+						&dto.Metric{
+							Label: []*dto.LabelPair{
+								&dto.LabelPair{
+									Name:  proto.String("n2"),
+									Value: proto.String("val2"),
+								},
+								&dto.LabelPair{
+									Name:  proto.String("n1"),
+									Value: proto.String("val1"),
+								},
+							},
+							Summary: &dto.Summary{
+								SampleCount: proto.Uint64(20),
+								Quantile: []*dto.Quantile{
+									&dto.Quantile{
+										Quantile: proto.Float64(0.3),
+										Value:    proto.Float64(-1.2),
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+		},
+		// 4: The histogram.
+		{
+			in: `
+# HELP request_duration_microseconds The response latency.
+# TYPE request_duration_microseconds histogram
+request_duration_microseconds_bucket{le="100"} 123
+request_duration_microseconds_bucket{le="120"} 412
+request_duration_microseconds_bucket{le="144"} 592
+request_duration_microseconds_bucket{le="172.8"} 1524
+request_duration_microseconds_bucket{le="+Inf"} 2693
+request_duration_microseconds_sum 1.7560473e+06
+request_duration_microseconds_count 2693
+`,
+			out: []*dto.MetricFamily{
+				{
+					Name: proto.String("request_duration_microseconds"),
+					Help: proto.String("The response latency."),
+					Type: dto.MetricType_HISTOGRAM.Enum(),
+					Metric: []*dto.Metric{
+						&dto.Metric{
+							Histogram: &dto.Histogram{
+								SampleCount: proto.Uint64(2693),
+								SampleSum:   proto.Float64(1756047.3),
+								Bucket: []*dto.Bucket{
+									&dto.Bucket{
+										UpperBound:      proto.Float64(100),
+										CumulativeCount: proto.Uint64(123),
+									},
+									&dto.Bucket{
+										UpperBound:      proto.Float64(120),
+										CumulativeCount: proto.Uint64(412),
+									},
+									&dto.Bucket{
+										UpperBound:      proto.Float64(144),
+										CumulativeCount: proto.Uint64(592),
+									},
+									&dto.Bucket{
+										UpperBound:      proto.Float64(172.8),
+										CumulativeCount: proto.Uint64(1524),
+									},
+									&dto.Bucket{
+										UpperBound:      proto.Float64(math.Inf(+1)),
+										CumulativeCount: proto.Uint64(2693),
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+		},
+	}
+
+	for i, scenario := range scenarios {
+		out, err := parser.TextToMetricFamilies(strings.NewReader(scenario.in))
+		if err != nil {
+			t.Errorf("%d. error: %s", i, err)
+			continue
+		}
+		if expected, got := len(scenario.out), len(out); expected != got {
+			t.Errorf(
+				"%d. expected %d MetricFamilies, got %d",
+				i, expected, got,
+			)
+		}
+		for _, expected := range scenario.out {
+			got, ok := out[expected.GetName()]
+			if !ok {
+				t.Errorf(
+					"%d. expected MetricFamily %q, found none",
+					i, expected.GetName(),
+				)
+				continue
+			}
+			if expected.String() != got.String() {
+				t.Errorf(
+					"%d. expected MetricFamily %s, got %s",
+					i, expected, got,
+				)
+			}
+		}
+	}
+}
+
+func TestTextParse(t *testing.T) {
+	testTextParse(t)
+}
+
+func BenchmarkTextParse(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		testTextParse(b)
+	}
+}
+
+func testTextParseError(t testing.TB) {
+	var scenarios = []struct {
+		in  string
+		err string
+	}{
+		// 0: No new-line at end of input.
+		{
+			in: `
+bla 3.14
+blubber 42`,
+			err: "text format parsing error in line 3: unexpected end of input stream",
+		},
+		// 1: Invalid escape sequence in label value.
+		{
+			in:  `metric{label="\t"} 3.14`,
+			err: "text format parsing error in line 1: invalid escape sequence",
+		},
+		// 2: Newline in label value.
+		{
+			in: `
+metric{label="new
+line"} 3.14
+`,
+			err: `text format parsing error in line 2: label value "new" contains unescaped new-line`,
+		},
+		// 3:
+		{
+			in:  `metric{@="bla"} 3.14`,
+			err: "text format parsing error in line 1: invalid label name for metric",
+		},
+		// 4:
+		{
+			in:  `metric{__name__="bla"} 3.14`,
+			err: `text format parsing error in line 1: label name "__name__" is reserved`,
+		},
+		// 5:
+		{
+			in:  `metric{label+="bla"} 3.14`,
+			err: "text format parsing error in line 1: expected '=' after label name",
+		},
+		// 6:
+		{
+			in:  `metric{label=bla} 3.14`,
+			err: "text format parsing error in line 1: expected '\"' at start of label value",
+		},
+		// 7:
+		{
+			in: `
+# TYPE metric summary
+metric{quantile="bla"} 3.14
+`,
+			err: "text format parsing error in line 3: expected float as value for 'quantile' label",
+		},
+		// 8:
+		{
+			in:  `metric{label="bla"+} 3.14`,
+			err: "text format parsing error in line 1: unexpected end of label value",
+		},
+		// 9:
+		{
+			in: `metric{label="bla"} 3.14 2.72
+`,
+			err: "text format parsing error in line 1: expected integer as timestamp",
+		},
+		// 10:
+		{
+			in: `metric{label="bla"} 3.14 2 3
+`,
+			err: "text format parsing error in line 1: spurious string after timestamp",
+		},
+		// 11:
+		{
+			in: `metric{label="bla"} blubb
+`,
+			err: "text format parsing error in line 1: expected float as value",
+		},
+		// 12:
+		{
+			in: `
+# HELP metric one
+# HELP metric two
+`,
+			err: "text format parsing error in line 3: second HELP line for metric name",
+		},
+		// 13:
+		{
+			in: `
+# TYPE metric counter
+# TYPE metric untyped
+`,
+			err: `text format parsing error in line 3: second TYPE line for metric name "metric", or TYPE reported after samples`,
+		},
+		// 14:
+		{
+			in: `
+metric 4.12
+# TYPE metric counter
+`,
+			err: `text format parsing error in line 3: second TYPE line for metric name "metric", or TYPE reported after samples`,
+		},
+		// 14:
+		{
+			in: `
+# TYPE metric bla
+`,
+			err: "text format parsing error in line 2: unknown metric type",
+		},
+		// 15:
+		{
+			in: `
+# TYPE met-ric
+`,
+			err: "text format parsing error in line 2: invalid metric name in comment",
+		},
+		// 16:
+		{
+			in:  `@invalidmetric{label="bla"} 3.14 2`,
+			err: "text format parsing error in line 1: invalid metric name",
+		},
+		// 17:
+		{
+			in:  `{label="bla"} 3.14 2`,
+			err: "text format parsing error in line 1: invalid metric name",
+		},
+		// 18:
+		{
+			in: `
+# TYPE metric histogram
+metric_bucket{le="bla"} 3.14
+`,
+			err: "text format parsing error in line 3: expected float as value for 'le' label",
+		},
+	}
+
+	for i, scenario := range scenarios {
+		_, err := parser.TextToMetricFamilies(strings.NewReader(scenario.in))
+		if err == nil {
+			t.Errorf("%d. expected error, got nil", i)
+			continue
+		}
+		if expected, got := scenario.err, err.Error(); strings.Index(got, expected) != 0 {
+			t.Errorf(
+				"%d. expected error starting with %q, got %q",
+				i, expected, got,
+			)
+		}
+	}
+
+}
+
+func TestTextParseError(t *testing.T) {
+	testTextParseError(t)
+}
+
+func BenchmarkParseError(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		testTextParseError(b)
+	}
+}
diff --git a/vendor/github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg/README.txt b/vendor/github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg/README.txt
new file mode 100644
index 000000000..7723656d5
--- /dev/null
+++ b/vendor/github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg/README.txt
@@ -0,0 +1,67 @@
+PACKAGE
+
+package goautoneg
+import "bitbucket.org/ww/goautoneg"
+
+HTTP Content-Type Autonegotiation.
+
+The functions in this package implement the behaviour specified in
+http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
+
+Copyright (c) 2011, Open Knowledge Foundation Ltd.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    Neither the name of the Open Knowledge Foundation Ltd. nor the
+    names of its contributors may be used to endorse or promote
+    products derived from this software without specific prior written
+    permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+FUNCTIONS
+
+func Negotiate(header string, alternatives []string) (content_type string)
+Negotiate the most appropriate content_type given the accept header
+and a list of alternatives.
+
+func ParseAccept(header string) (accept []Accept)
+Parse an Accept Header string returning a sorted list
+of clauses
+
+
+TYPES
+
+type Accept struct {
+    Type, SubType string
+    Q             float32
+    Params        map[string]string
+}
+Structure to represent a clause in an HTTP Accept Header
+
+
+SUBDIRECTORIES
+
+	.hg
diff --git a/vendor/github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg/autoneg.go b/vendor/github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg/autoneg.go
new file mode 100644
index 000000000..648b38cb6
--- /dev/null
+++ b/vendor/github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg/autoneg.go
@@ -0,0 +1,162 @@
+/*
+HTTP Content-Type Autonegotiation.
+
+The functions in this package implement the behaviour specified in
+http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
+
+Copyright (c) 2011, Open Knowledge Foundation Ltd.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    Neither the name of the Open Knowledge Foundation Ltd. nor the
+    names of its contributors may be used to endorse or promote
+    products derived from this software without specific prior written
+    permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+*/
+package goautoneg
+
+import (
+	"sort"
+	"strconv"
+	"strings"
+)
+
+// Structure to represent a clause in an HTTP Accept Header
+type Accept struct {
+	Type, SubType string
+	Q             float64
+	Params        map[string]string
+}
+
+// For internal use, so that we can use the sort interface
+type accept_slice []Accept
+
+func (accept accept_slice) Len() int {
+	slice := []Accept(accept)
+	return len(slice)
+}
+
+func (accept accept_slice) Less(i, j int) bool {
+	slice := []Accept(accept)
+	ai, aj := slice[i], slice[j]
+	if ai.Q > aj.Q {
+		return true
+	}
+	if ai.Type != "*" && aj.Type == "*" {
+		return true
+	}
+	if ai.SubType != "*" && aj.SubType == "*" {
+		return true
+	}
+	return false
+}
+
+func (accept accept_slice) Swap(i, j int) {
+	slice := []Accept(accept)
+	slice[i], slice[j] = slice[j], slice[i]
+}
+
+// Parse an Accept Header string returning a sorted list
+// of clauses
+func ParseAccept(header string) (accept []Accept) {
+	parts := strings.Split(header, ",")
+	accept = make([]Accept, 0, len(parts))
+	for _, part := range parts {
+		part := strings.Trim(part, " ")
+
+		a := Accept{}
+		a.Params = make(map[string]string)
+		a.Q = 1.0
+
+		mrp := strings.Split(part, ";")
+
+		media_range := mrp[0]
+		sp := strings.Split(media_range, "/")
+		a.Type = strings.Trim(sp[0], " ")
+
+		switch {
+		case len(sp) == 1 && a.Type == "*":
+			a.SubType = "*"
+		case len(sp) == 2:
+			a.SubType = strings.Trim(sp[1], " ")
+		default:
+			continue
+		}
+
+		if len(mrp) == 1 {
+			accept = append(accept, a)
+			continue
+		}
+
+		for _, param := range mrp[1:] {
+			sp := strings.SplitN(param, "=", 2)
+			if len(sp) != 2 {
+				continue
+			}
+			token := strings.Trim(sp[0], " ")
+			if token == "q" {
+				a.Q, _ = strconv.ParseFloat(sp[1], 32)
+			} else {
+				a.Params[token] = strings.Trim(sp[1], " ")
+			}
+		}
+
+		accept = append(accept, a)
+	}
+
+	slice := accept_slice(accept)
+	sort.Sort(slice)
+
+	return
+}
+
+// Negotiate the most appropriate content_type given the accept header
+// and a list of alternatives.
+func Negotiate(header string, alternatives []string) (content_type string) {
+	asp := make([][]string, 0, len(alternatives))
+	for _, ctype := range alternatives {
+		asp = append(asp, strings.SplitN(ctype, "/", 2))
+	}
+	for _, clause := range ParseAccept(header) {
+		for i, ctsp := range asp {
+			if clause.Type == ctsp[0] && clause.SubType == ctsp[1] {
+				content_type = alternatives[i]
+				return
+			}
+			if clause.Type == ctsp[0] && clause.SubType == "*" {
+				content_type = alternatives[i]
+				return
+			}
+			if clause.Type == "*" && clause.SubType == "*" {
+				content_type = alternatives[i]
+				return
+			}
+		}
+	}
+	return
+}
diff --git a/vendor/github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg/autoneg_test.go b/vendor/github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg/autoneg_test.go
new file mode 100644
index 000000000..41d328f1d
--- /dev/null
+++ b/vendor/github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg/autoneg_test.go
@@ -0,0 +1,33 @@
+package goautoneg
+
+import (
+	"testing"
+)
+
+var chrome = "application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5"
+
+func TestParseAccept(t *testing.T) {
+	alternatives := []string{"text/html", "image/png"}
+	content_type := Negotiate(chrome, alternatives)
+	if content_type != "image/png" {
+		t.Errorf("got %s expected image/png", content_type)
+	}
+
+	alternatives = []string{"text/html", "text/plain", "text/n3"}
+	content_type = Negotiate(chrome, alternatives)
+	if content_type != "text/html" {
+		t.Errorf("got %s expected text/html", content_type)
+	}
+
+	alternatives = []string{"text/n3", "text/plain"}
+	content_type = Negotiate(chrome, alternatives)
+	if content_type != "text/plain" {
+		t.Errorf("got %s expected text/plain", content_type)
+	}
+
+	alternatives = []string{"text/n3", "application/rdf+xml"}
+	content_type = Negotiate(chrome, alternatives)
+	if content_type != "text/n3" {
+		t.Errorf("got %s expected text/n3", content_type)
+	}
+}
diff --git a/vendor/github.com/prometheus/common/log/eventlog_formatter.go b/vendor/github.com/prometheus/common/log/eventlog_formatter.go
new file mode 100644
index 000000000..6d41284ce
--- /dev/null
+++ b/vendor/github.com/prometheus/common/log/eventlog_formatter.go
@@ -0,0 +1,89 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build windows
+
+package log
+
+import (
+	"fmt"
+	"os"
+
+	"golang.org/x/sys/windows/svc/eventlog"
+
+	"github.com/Sirupsen/logrus"
+)
+
+func init() {
+	setEventlogFormatter = func(name string, debugAsInfo bool) error {
+		if name == "" {
+			return fmt.Errorf("missing name parameter")
+		}
+
+		fmter, err := newEventlogger(name, debugAsInfo, origLogger.Formatter)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "error creating eventlog formatter: %v\n", err)
+			origLogger.Errorf("can't connect logger to eventlog: %v", err)
+			return err
+		}
+		origLogger.Formatter = fmter
+		return nil
+	}
+}
+
+type eventlogger struct {
+	log         *eventlog.Log
+	debugAsInfo bool
+	wrap        logrus.Formatter
+}
+
+func newEventlogger(name string, debugAsInfo bool, fmter logrus.Formatter) (*eventlogger, error) {
+	logHandle, err := eventlog.Open(name)
+	if err != nil {
+		return nil, err
+	}
+	return &eventlogger{log: logHandle, debugAsInfo: debugAsInfo, wrap: fmter}, nil
+}
+
+func (s *eventlogger) Format(e *logrus.Entry) ([]byte, error) {
+	data, err := s.wrap.Format(e)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "eventlogger: can't format entry: %v\n", err)
+		return data, err
+	}
+
+	switch e.Level {
+	case logrus.PanicLevel:
+		fallthrough
+	case logrus.FatalLevel:
+		fallthrough
+	case logrus.ErrorLevel:
+		err = s.log.Error(102, e.Message)
+	case logrus.WarnLevel:
+		err = s.log.Warning(101, e.Message)
+	case logrus.InfoLevel:
+		err = s.log.Info(100, e.Message)
+	case logrus.DebugLevel:
+		if s.debugAsInfo {
+			err = s.log.Info(100, e.Message)
+		}
+	default:
+		err = s.log.Info(100, e.Message)
+	}
+
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "eventlogger: can't send log to eventlog: %v\n", err)
+	}
+
+	return data, err
+}
diff --git a/vendor/github.com/prometheus/common/log/log.go b/vendor/github.com/prometheus/common/log/log.go
new file mode 100644
index 000000000..efad4842f
--- /dev/null
+++ b/vendor/github.com/prometheus/common/log/log.go
@@ -0,0 +1,365 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package log
+
+import (
+	"flag"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"log"
+	"net/url"
+	"os"
+	"runtime"
+	"strconv"
+	"strings"
+
+	"github.com/Sirupsen/logrus"
+)
+
+type levelFlag string
+
+// String implements flag.Value.
+func (f levelFlag) String() string {
+	return fmt.Sprintf("%q", string(f))
+}
+
+// Set implements flag.Value.
+func (f levelFlag) Set(level string) error {
+	l, err := logrus.ParseLevel(level)
+	if err != nil {
+		return err
+	}
+	origLogger.Level = l
+	return nil
+}
+
+// setSyslogFormatter is nil if the target architecture does not support syslog.
+var setSyslogFormatter func(string, string) error
+
+// setEventlogFormatter is nil if the target OS does not support Eventlog (i.e., is not Windows).
+var setEventlogFormatter func(string, bool) error
+
+func setJSONFormatter() {
+	origLogger.Formatter = &logrus.JSONFormatter{}
+}
+
+type logFormatFlag url.URL
+
+// String implements flag.Value.
+func (f logFormatFlag) String() string {
+	u := url.URL(f)
+	return fmt.Sprintf("%q", u.String())
+}
+
+// Set implements flag.Value.
+func (f logFormatFlag) Set(format string) error {
+	u, err := url.Parse(format)
+	if err != nil {
+		return err
+	}
+	if u.Scheme != "logger" {
+		return fmt.Errorf("invalid scheme %s", u.Scheme)
+	}
+	jsonq := u.Query().Get("json")
+	if jsonq == "true" {
+		setJSONFormatter()
+	}
+
+	switch u.Opaque {
+	case "syslog":
+		if setSyslogFormatter == nil {
+			return fmt.Errorf("system does not support syslog")
+		}
+		appname := u.Query().Get("appname")
+		facility := u.Query().Get("local")
+		return setSyslogFormatter(appname, facility)
+	case "eventlog":
+		if setEventlogFormatter == nil {
+			return fmt.Errorf("system does not support eventlog")
+		}
+		name := u.Query().Get("name")
+		debugAsInfo := false
+		debugAsInfoRaw := u.Query().Get("debugAsInfo")
+		if parsedDebugAsInfo, err := strconv.ParseBool(debugAsInfoRaw); err == nil {
+			debugAsInfo = parsedDebugAsInfo
+		}
+		return setEventlogFormatter(name, debugAsInfo)
+	case "stdout":
+		origLogger.Out = os.Stdout
+	case "stderr":
+		origLogger.Out = os.Stderr
+	default:
+		return fmt.Errorf("unsupported logger %q", u.Opaque)
+	}
+	return nil
+}
+
+func init() {
+	AddFlags(flag.CommandLine)
+}
+
+// AddFlags adds the flags used by this package to the given FlagSet. That's
+// useful if working with a custom FlagSet. The init function of this package
+// adds the flags to flag.CommandLine anyway. Thus, it's usually enough to call
+// flag.Parse() to make the logging flags take effect.
+func AddFlags(fs *flag.FlagSet) {
+	fs.Var(
+		levelFlag(origLogger.Level.String()),
+		"log.level",
+		"Only log messages with the given severity or above. Valid levels: [debug, info, warn, error, fatal]",
+	)
+	fs.Var(
+		logFormatFlag(url.URL{Scheme: "logger", Opaque: "stderr"}),
+		"log.format",
+		`Set the log target and format. Example: "logger:syslog?appname=bob&local=7" or "logger:stdout?json=true"`,
+	)
+}
+
+// Logger is the interface for loggers used in the Prometheus components.
+type Logger interface {
+	Debug(...interface{})
+	Debugln(...interface{})
+	Debugf(string, ...interface{})
+
+	Info(...interface{})
+	Infoln(...interface{})
+	Infof(string, ...interface{})
+
+	Warn(...interface{})
+	Warnln(...interface{})
+	Warnf(string, ...interface{})
+
+	Error(...interface{})
+	Errorln(...interface{})
+	Errorf(string, ...interface{})
+
+	Fatal(...interface{})
+	Fatalln(...interface{})
+	Fatalf(string, ...interface{})
+
+	With(key string, value interface{}) Logger
+}
+
+type logger struct {
+	entry *logrus.Entry
+}
+
+func (l logger) With(key string, value interface{}) Logger {
+	return logger{l.entry.WithField(key, value)}
+}
+
+// Debug logs a message at level Debug on the standard logger.
+func (l logger) Debug(args ...interface{}) {
+	l.sourced().Debug(args...)
+}
+
+// Debug logs a message at level Debug on the standard logger.
+func (l logger) Debugln(args ...interface{}) {
+	l.sourced().Debugln(args...)
+}
+
+// Debugf logs a message at level Debug on the standard logger.
+func (l logger) Debugf(format string, args ...interface{}) {
+	l.sourced().Debugf(format, args...)
+}
+
+// Info logs a message at level Info on the standard logger.
+func (l logger) Info(args ...interface{}) {
+	l.sourced().Info(args...)
+}
+
+// Info logs a message at level Info on the standard logger.
+func (l logger) Infoln(args ...interface{}) {
+	l.sourced().Infoln(args...)
+}
+
+// Infof logs a message at level Info on the standard logger.
+func (l logger) Infof(format string, args ...interface{}) {
+	l.sourced().Infof(format, args...)
+}
+
+// Warn logs a message at level Warn on the standard logger.
+func (l logger) Warn(args ...interface{}) {
+	l.sourced().Warn(args...)
+}
+
+// Warn logs a message at level Warn on the standard logger.
+func (l logger) Warnln(args ...interface{}) {
+	l.sourced().Warnln(args...)
+}
+
+// Warnf logs a message at level Warn on the standard logger.
+func (l logger) Warnf(format string, args ...interface{}) {
+	l.sourced().Warnf(format, args...)
+}
+
+// Error logs a message at level Error on the standard logger.
+func (l logger) Error(args ...interface{}) {
+	l.sourced().Error(args...)
+}
+
+// Error logs a message at level Error on the standard logger.
+func (l logger) Errorln(args ...interface{}) {
+	l.sourced().Errorln(args...)
+}
+
+// Errorf logs a message at level Error on the standard logger.
+func (l logger) Errorf(format string, args ...interface{}) {
+	l.sourced().Errorf(format, args...)
+}
+
+// Fatal logs a message at level Fatal on the standard logger.
+func (l logger) Fatal(args ...interface{}) {
+	l.sourced().Fatal(args...)
+}
+
+// Fatal logs a message at level Fatal on the standard logger.
+func (l logger) Fatalln(args ...interface{}) {
+	l.sourced().Fatalln(args...)
+}
+
+// Fatalf logs a message at level Fatal on the standard logger.
+func (l logger) Fatalf(format string, args ...interface{}) {
+	l.sourced().Fatalf(format, args...)
+}
+
+// sourced adds a source field to the logger that contains
+// the file name and line where the logging happened.
+func (l logger) sourced() *logrus.Entry {
+	_, file, line, ok := runtime.Caller(2)
+	if !ok {
+		file = "<???>"
+		line = 1
+	} else {
+		slash := strings.LastIndex(file, "/")
+		file = file[slash+1:]
+	}
+	return l.entry.WithField("source", fmt.Sprintf("%s:%d", file, line))
+}
+
+var origLogger = logrus.New()
+var baseLogger = logger{entry: logrus.NewEntry(origLogger)}
+
+// Base returns the default Logger logging to
+func Base() Logger {
+	return baseLogger
+}
+
+// NewLogger returns a new Logger logging to out.
+func NewLogger(w io.Writer) Logger {
+	l := logrus.New()
+	l.Out = w
+	return logger{entry: logrus.NewEntry(l)}
+}
+
+// NewNopLogger returns a logger that discards all log messages.
+func NewNopLogger() Logger {
+	l := logrus.New()
+	l.Out = ioutil.Discard
+	return logger{entry: logrus.NewEntry(l)}
+}
+
+// With adds a field to the logger.
+func With(key string, value interface{}) Logger {
+	return baseLogger.With(key, value)
+}
+
+// Debug logs a message at level Debug on the standard logger.
+func Debug(args ...interface{}) {
+	baseLogger.sourced().Debug(args...)
+}
+
+// Debugln logs a message at level Debug on the standard logger.
+func Debugln(args ...interface{}) {
+	baseLogger.sourced().Debugln(args...)
+}
+
+// Debugf logs a message at level Debug on the standard logger.
+func Debugf(format string, args ...interface{}) {
+	baseLogger.sourced().Debugf(format, args...)
+}
+
+// Info logs a message at level Info on the standard logger.
+func Info(args ...interface{}) {
+	baseLogger.sourced().Info(args...)
+}
+
+// Infoln logs a message at level Info on the standard logger.
+func Infoln(args ...interface{}) {
+	baseLogger.sourced().Infoln(args...)
+}
+
+// Infof logs a message at level Info on the standard logger.
+func Infof(format string, args ...interface{}) {
+	baseLogger.sourced().Infof(format, args...)
+}
+
+// Warn logs a message at level Warn on the standard logger.
+func Warn(args ...interface{}) {
+	baseLogger.sourced().Warn(args...)
+}
+
+// Warnln logs a message at level Warn on the standard logger.
+func Warnln(args ...interface{}) {
+	baseLogger.sourced().Warnln(args...)
+}
+
+// Warnf logs a message at level Warn on the standard logger.
+func Warnf(format string, args ...interface{}) {
+	baseLogger.sourced().Warnf(format, args...)
+}
+
+// Error logs a message at level Error on the standard logger.
+func Error(args ...interface{}) {
+	baseLogger.sourced().Error(args...)
+}
+
+// Errorln logs a message at level Error on the standard logger.
+func Errorln(args ...interface{}) {
+	baseLogger.sourced().Errorln(args...)
+}
+
+// Errorf logs a message at level Error on the standard logger.
+func Errorf(format string, args ...interface{}) {
+	baseLogger.sourced().Errorf(format, args...)
+}
+
+// Fatal logs a message at level Fatal on the standard logger.
+func Fatal(args ...interface{}) {
+	baseLogger.sourced().Fatal(args...)
+}
+
+// Fatalln logs a message at level Fatal on the standard logger.
+func Fatalln(args ...interface{}) {
+	baseLogger.sourced().Fatalln(args...)
+}
+
+// Fatalf logs a message at level Fatal on the standard logger.
+func Fatalf(format string, args ...interface{}) {
+	baseLogger.sourced().Fatalf(format, args...)
+}
+
+type errorLogWriter struct{}
+
+func (errorLogWriter) Write(b []byte) (int, error) {
+	baseLogger.sourced().Error(string(b))
+	return len(b), nil
+}
+
+// NewErrorLogger returns a log.Logger that is meant to be used
+// in the ErrorLog field of an http.Server to log HTTP server errors.
+func NewErrorLogger() *log.Logger {
+	return log.New(&errorLogWriter{}, "", 0)
+}
diff --git a/vendor/github.com/prometheus/common/log/log_test.go b/vendor/github.com/prometheus/common/log/log_test.go
new file mode 100644
index 000000000..953adb79c
--- /dev/null
+++ b/vendor/github.com/prometheus/common/log/log_test.go
@@ -0,0 +1,39 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package log
+
+import (
+	"bytes"
+	"regexp"
+	"testing"
+
+	"github.com/Sirupsen/logrus"
+)
+
+func TestFileLineLogging(t *testing.T) {
+	var buf bytes.Buffer
+	origLogger.Out = &buf
+	origLogger.Formatter = &logrus.TextFormatter{
+		DisableColors: true,
+	}
+
+	// The default logging level should be "info".
+	Debug("This debug-level line should not show up in the output.")
+	Infof("This %s-level line should show up in the output.", "info")
+
+	re := `^time=".*" level=info msg="This info-level line should show up in the output." source="log_test.go:33" \n$`
+	if !regexp.MustCompile(re).Match(buf.Bytes()) {
+		t.Fatalf("%q did not match expected regex %q", buf.String(), re)
+	}
+}
diff --git a/vendor/github.com/prometheus/common/log/syslog_formatter.go b/vendor/github.com/prometheus/common/log/syslog_formatter.go
new file mode 100644
index 000000000..fd8c6fbee
--- /dev/null
+++ b/vendor/github.com/prometheus/common/log/syslog_formatter.go
@@ -0,0 +1,119 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build !windows,!nacl,!plan9
+
+package log
+
+import (
+	"fmt"
+	"log/syslog"
+	"os"
+
+	"github.com/Sirupsen/logrus"
+)
+
+func init() {
+	setSyslogFormatter = func(appname, local string) error {
+		if appname == "" {
+			return fmt.Errorf("missing appname parameter")
+		}
+		if local == "" {
+			return fmt.Errorf("missing local parameter")
+		}
+
+		fmter, err := newSyslogger(appname, local, origLogger.Formatter)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "error creating syslog formatter: %v\n", err)
+			origLogger.Errorf("can't connect logger to syslog: %v", err)
+			return err
+		}
+		origLogger.Formatter = fmter
+		return nil
+	}
+}
+
+var ceeTag = []byte("@cee:")
+
+type syslogger struct {
+	wrap logrus.Formatter
+	out  *syslog.Writer
+}
+
+func newSyslogger(appname string, facility string, fmter logrus.Formatter) (*syslogger, error) {
+	priority, err := getFacility(facility)
+	if err != nil {
+		return nil, err
+	}
+	out, err := syslog.New(priority, appname)
+	return &syslogger{
+		out:  out,
+		wrap: fmter,
+	}, err
+}
+
+func getFacility(facility string) (syslog.Priority, error) {
+	switch facility {
+	case "0":
+		return syslog.LOG_LOCAL0, nil
+	case "1":
+		return syslog.LOG_LOCAL1, nil
+	case "2":
+		return syslog.LOG_LOCAL2, nil
+	case "3":
+		return syslog.LOG_LOCAL3, nil
+	case "4":
+		return syslog.LOG_LOCAL4, nil
+	case "5":
+		return syslog.LOG_LOCAL5, nil
+	case "6":
+		return syslog.LOG_LOCAL6, nil
+	case "7":
+		return syslog.LOG_LOCAL7, nil
+	}
+	return syslog.LOG_LOCAL0, fmt.Errorf("invalid local(%s) for syslog", facility)
+}
+
+func (s *syslogger) Format(e *logrus.Entry) ([]byte, error) {
+	data, err := s.wrap.Format(e)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "syslogger: can't format entry: %v\n", err)
+		return data, err
+	}
+	// only append tag to data sent to syslog (line), not to what
+	// is returned
+	line := string(append(ceeTag, data...))
+
+	switch e.Level {
+	case logrus.PanicLevel:
+		err = s.out.Crit(line)
+	case logrus.FatalLevel:
+		err = s.out.Crit(line)
+	case logrus.ErrorLevel:
+		err = s.out.Err(line)
+	case logrus.WarnLevel:
+		err = s.out.Warning(line)
+	case logrus.InfoLevel:
+		err = s.out.Info(line)
+	case logrus.DebugLevel:
+		err = s.out.Debug(line)
+	default:
+		err = s.out.Notice(line)
+	}
+
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "syslogger: can't send log to syslog: %v\n", err)
+	}
+
+	return data, err
+}
diff --git a/vendor/github.com/prometheus/common/model/alert.go b/vendor/github.com/prometheus/common/model/alert.go
new file mode 100644
index 000000000..35e739c7a
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/alert.go
@@ -0,0 +1,136 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"fmt"
+	"time"
+)
+
+type AlertStatus string
+
+const (
+	AlertFiring   AlertStatus = "firing"
+	AlertResolved AlertStatus = "resolved"
+)
+
+// Alert is a generic representation of an alert in the Prometheus eco-system.
+type Alert struct {
+	// Label value pairs for purpose of aggregation, matching, and disposition
+	// dispatching. This must minimally include an "alertname" label.
+	Labels LabelSet `json:"labels"`
+
+	// Extra key/value information which does not define alert identity.
+	Annotations LabelSet `json:"annotations"`
+
+	// The known time range for this alert. Both ends are optional.
+	StartsAt     time.Time `json:"startsAt,omitempty"`
+	EndsAt       time.Time `json:"endsAt,omitempty"`
+	GeneratorURL string    `json:"generatorURL"`
+}
+
+// Name returns the name of the alert. It is equivalent to the "alertname" label.
+func (a *Alert) Name() string {
+	return string(a.Labels[AlertNameLabel])
+}
+
+// Fingerprint returns a unique hash for the alert. It is equivalent to
+// the fingerprint of the alert's label set.
+func (a *Alert) Fingerprint() Fingerprint {
+	return a.Labels.Fingerprint()
+}
+
+func (a *Alert) String() string {
+	s := fmt.Sprintf("%s[%s]", a.Name(), a.Fingerprint().String()[:7])
+	if a.Resolved() {
+		return s + "[resolved]"
+	}
+	return s + "[active]"
+}
+
+// Resolved returns true iff the activity interval ended in the past.
+func (a *Alert) Resolved() bool {
+	return a.ResolvedAt(time.Now())
+}
+
+// ResolvedAt returns true off the activity interval ended before
+// the given timestamp.
+func (a *Alert) ResolvedAt(ts time.Time) bool {
+	if a.EndsAt.IsZero() {
+		return false
+	}
+	return !a.EndsAt.After(ts)
+}
+
+// Status returns the status of the alert.
+func (a *Alert) Status() AlertStatus {
+	if a.Resolved() {
+		return AlertResolved
+	}
+	return AlertFiring
+}
+
+// Validate checks whether the alert data is inconsistent.
+func (a *Alert) Validate() error {
+	if a.StartsAt.IsZero() {
+		return fmt.Errorf("start time missing")
+	}
+	if !a.EndsAt.IsZero() && a.EndsAt.Before(a.StartsAt) {
+		return fmt.Errorf("start time must be before end time")
+	}
+	if err := a.Labels.Validate(); err != nil {
+		return fmt.Errorf("invalid label set: %s", err)
+	}
+	if len(a.Labels) == 0 {
+		return fmt.Errorf("at least one label pair required")
+	}
+	if err := a.Annotations.Validate(); err != nil {
+		return fmt.Errorf("invalid annotations: %s", err)
+	}
+	return nil
+}
+
+// Alert is a list of alerts that can be sorted in chronological order.
+type Alerts []*Alert
+
+func (as Alerts) Len() int      { return len(as) }
+func (as Alerts) Swap(i, j int) { as[i], as[j] = as[j], as[i] }
+
+func (as Alerts) Less(i, j int) bool {
+	if as[i].StartsAt.Before(as[j].StartsAt) {
+		return true
+	}
+	if as[i].EndsAt.Before(as[j].EndsAt) {
+		return true
+	}
+	return as[i].Fingerprint() < as[j].Fingerprint()
+}
+
+// HasFiring returns true iff one of the alerts is not resolved.
+func (as Alerts) HasFiring() bool {
+	for _, a := range as {
+		if !a.Resolved() {
+			return true
+		}
+	}
+	return false
+}
+
+// Status returns StatusFiring iff at least one of the alerts is firing.
+func (as Alerts) Status() AlertStatus {
+	if as.HasFiring() {
+		return AlertFiring
+	}
+	return AlertResolved
+}
diff --git a/vendor/github.com/prometheus/common/model/alert_test.go b/vendor/github.com/prometheus/common/model/alert_test.go
new file mode 100644
index 000000000..9692bca21
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/alert_test.go
@@ -0,0 +1,118 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestAlertValidate(t *testing.T) {
+	ts := time.Now()
+
+	var cases = []struct {
+		alert *Alert
+		err   string
+	}{
+		{
+			alert: &Alert{
+				Labels:   LabelSet{"a": "b"},
+				StartsAt: ts,
+			},
+		},
+		{
+			alert: &Alert{
+				Labels: LabelSet{"a": "b"},
+			},
+			err: "start time missing",
+		},
+		{
+			alert: &Alert{
+				Labels:   LabelSet{"a": "b"},
+				StartsAt: ts,
+				EndsAt:   ts,
+			},
+		},
+		{
+			alert: &Alert{
+				Labels:   LabelSet{"a": "b"},
+				StartsAt: ts,
+				EndsAt:   ts.Add(1 * time.Minute),
+			},
+		},
+		{
+			alert: &Alert{
+				Labels:   LabelSet{"a": "b"},
+				StartsAt: ts,
+				EndsAt:   ts.Add(-1 * time.Minute),
+			},
+			err: "start time must be before end time",
+		},
+		{
+			alert: &Alert{
+				StartsAt: ts,
+			},
+			err: "at least one label pair required",
+		},
+		{
+			alert: &Alert{
+				Labels:   LabelSet{"a": "b", "!bad": "label"},
+				StartsAt: ts,
+			},
+			err: "invalid label set: invalid name",
+		},
+		{
+			alert: &Alert{
+				Labels:   LabelSet{"a": "b", "bad": "\xfflabel"},
+				StartsAt: ts,
+			},
+			err: "invalid label set: invalid value",
+		},
+		{
+			alert: &Alert{
+				Labels:      LabelSet{"a": "b"},
+				Annotations: LabelSet{"!bad": "label"},
+				StartsAt:    ts,
+			},
+			err: "invalid annotations: invalid name",
+		},
+		{
+			alert: &Alert{
+				Labels:      LabelSet{"a": "b"},
+				Annotations: LabelSet{"bad": "\xfflabel"},
+				StartsAt:    ts,
+			},
+			err: "invalid annotations: invalid value",
+		},
+	}
+
+	for i, c := range cases {
+		err := c.alert.Validate()
+		if err == nil {
+			if c.err == "" {
+				continue
+			}
+			t.Errorf("%d. Expected error %q but got none", i, c.err)
+			continue
+		}
+		if c.err == "" && err != nil {
+			t.Errorf("%d. Expected no error but got %q", i, err)
+			continue
+		}
+		if !strings.Contains(err.Error(), c.err) {
+			t.Errorf("%d. Expected error to contain %q but got %q", i, c.err, err)
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/common/model/fingerprinting.go b/vendor/github.com/prometheus/common/model/fingerprinting.go
new file mode 100644
index 000000000..fc4de4106
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/fingerprinting.go
@@ -0,0 +1,105 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// Fingerprint provides a hash-capable representation of a Metric.
+// For our purposes, FNV-1A 64-bit is used.
+type Fingerprint uint64
+
+// FingerprintFromString transforms a string representation into a Fingerprint.
+func FingerprintFromString(s string) (Fingerprint, error) {
+	num, err := strconv.ParseUint(s, 16, 64)
+	return Fingerprint(num), err
+}
+
+// ParseFingerprint parses the input string into a fingerprint.
+func ParseFingerprint(s string) (Fingerprint, error) {
+	num, err := strconv.ParseUint(s, 16, 64)
+	if err != nil {
+		return 0, err
+	}
+	return Fingerprint(num), nil
+}
+
+func (f Fingerprint) String() string {
+	return fmt.Sprintf("%016x", uint64(f))
+}
+
+// Fingerprints represents a collection of Fingerprint subject to a given
+// natural sorting scheme. It implements sort.Interface.
+type Fingerprints []Fingerprint
+
+// Len implements sort.Interface.
+func (f Fingerprints) Len() int {
+	return len(f)
+}
+
+// Less implements sort.Interface.
+func (f Fingerprints) Less(i, j int) bool {
+	return f[i] < f[j]
+}
+
+// Swap implements sort.Interface.
+func (f Fingerprints) Swap(i, j int) {
+	f[i], f[j] = f[j], f[i]
+}
+
+// FingerprintSet is a set of Fingerprints.
+type FingerprintSet map[Fingerprint]struct{}
+
+// Equal returns true if both sets contain the same elements (and not more).
+func (s FingerprintSet) Equal(o FingerprintSet) bool {
+	if len(s) != len(o) {
+		return false
+	}
+
+	for k := range s {
+		if _, ok := o[k]; !ok {
+			return false
+		}
+	}
+
+	return true
+}
+
+// Intersection returns the elements contained in both sets.
+func (s FingerprintSet) Intersection(o FingerprintSet) FingerprintSet {
+	myLength, otherLength := len(s), len(o)
+	if myLength == 0 || otherLength == 0 {
+		return FingerprintSet{}
+	}
+
+	subSet := s
+	superSet := o
+
+	if otherLength < myLength {
+		subSet = o
+		superSet = s
+	}
+
+	out := FingerprintSet{}
+
+	for k := range subSet {
+		if _, ok := superSet[k]; ok {
+			out[k] = struct{}{}
+		}
+	}
+
+	return out
+}
diff --git a/vendor/github.com/prometheus/common/model/fnv.go b/vendor/github.com/prometheus/common/model/fnv.go
new file mode 100644
index 000000000..038fc1c90
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/fnv.go
@@ -0,0 +1,42 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+// Inline and byte-free variant of hash/fnv's fnv64a.
+
+const (
+	offset64 = 14695981039346656037
+	prime64  = 1099511628211
+)
+
+// hashNew initializies a new fnv64a hash value.
+func hashNew() uint64 {
+	return offset64
+}
+
+// hashAdd adds a string to a fnv64a hash value, returning the updated hash.
+func hashAdd(h uint64, s string) uint64 {
+	for i := 0; i < len(s); i++ {
+		h ^= uint64(s[i])
+		h *= prime64
+	}
+	return h
+}
+
+// hashAddByte adds a byte to a fnv64a hash value, returning the updated hash.
+func hashAddByte(h uint64, b byte) uint64 {
+	h ^= uint64(b)
+	h *= prime64
+	return h
+}
diff --git a/vendor/github.com/prometheus/common/model/labels.go b/vendor/github.com/prometheus/common/model/labels.go
new file mode 100644
index 000000000..41051a01a
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/labels.go
@@ -0,0 +1,210 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"encoding/json"
+	"fmt"
+	"regexp"
+	"strings"
+	"unicode/utf8"
+)
+
+const (
+	// AlertNameLabel is the name of the label containing the an alert's name.
+	AlertNameLabel = "alertname"
+
+	// ExportedLabelPrefix is the prefix to prepend to the label names present in
+	// exported metrics if a label of the same name is added by the server.
+	ExportedLabelPrefix = "exported_"
+
+	// MetricNameLabel is the label name indicating the metric name of a
+	// timeseries.
+	MetricNameLabel = "__name__"
+
+	// SchemeLabel is the name of the label that holds the scheme on which to
+	// scrape a target.
+	SchemeLabel = "__scheme__"
+
+	// AddressLabel is the name of the label that holds the address of
+	// a scrape target.
+	AddressLabel = "__address__"
+
+	// MetricsPathLabel is the name of the label that holds the path on which to
+	// scrape a target.
+	MetricsPathLabel = "__metrics_path__"
+
+	// ReservedLabelPrefix is a prefix which is not legal in user-supplied
+	// label names.
+	ReservedLabelPrefix = "__"
+
+	// MetaLabelPrefix is a prefix for labels that provide meta information.
+	// Labels with this prefix are used for intermediate label processing and
+	// will not be attached to time series.
+	MetaLabelPrefix = "__meta_"
+
+	// TmpLabelPrefix is a prefix for temporary labels as part of relabelling.
+	// Labels with this prefix are used for intermediate label processing and
+	// will not be attached to time series. This is reserved for use in
+	// Prometheus configuration files by users.
+	TmpLabelPrefix = "__tmp_"
+
+	// ParamLabelPrefix is a prefix for labels that provide URL parameters
+	// used to scrape a target.
+	ParamLabelPrefix = "__param_"
+
+	// JobLabel is the label name indicating the job from which a timeseries
+	// was scraped.
+	JobLabel = "job"
+
+	// InstanceLabel is the label name used for the instance label.
+	InstanceLabel = "instance"
+
+	// BucketLabel is used for the label that defines the upper bound of a
+	// bucket of a histogram ("le" -> "less or equal").
+	BucketLabel = "le"
+
+	// QuantileLabel is used for the label that defines the quantile in a
+	// summary.
+	QuantileLabel = "quantile"
+)
+
+// LabelNameRE is a regular expression matching valid label names. Note that the
+// IsValid method of LabelName performs the same check but faster than a match
+// with this regular expression.
+var LabelNameRE = regexp.MustCompile("^[a-zA-Z_][a-zA-Z0-9_]*$")
+
+// A LabelName is a key for a LabelSet or Metric.  It has a value associated
+// therewith.
+type LabelName string
+
+// IsValid is true iff the label name matches the pattern of LabelNameRE. This
+// method, however, does not use LabelNameRE for the check but a much faster
+// hardcoded implementation.
+func (ln LabelName) IsValid() bool {
+	if len(ln) == 0 {
+		return false
+	}
+	for i, b := range ln {
+		if !((b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || b == '_' || (b >= '0' && b <= '9' && i > 0)) {
+			return false
+		}
+	}
+	return true
+}
+
+// UnmarshalYAML implements the yaml.Unmarshaler interface.
+func (ln *LabelName) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	var s string
+	if err := unmarshal(&s); err != nil {
+		return err
+	}
+	if !LabelName(s).IsValid() {
+		return fmt.Errorf("%q is not a valid label name", s)
+	}
+	*ln = LabelName(s)
+	return nil
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface.
+func (ln *LabelName) UnmarshalJSON(b []byte) error {
+	var s string
+	if err := json.Unmarshal(b, &s); err != nil {
+		return err
+	}
+	if !LabelName(s).IsValid() {
+		return fmt.Errorf("%q is not a valid label name", s)
+	}
+	*ln = LabelName(s)
+	return nil
+}
+
+// LabelNames is a sortable LabelName slice. In implements sort.Interface.
+type LabelNames []LabelName
+
+func (l LabelNames) Len() int {
+	return len(l)
+}
+
+func (l LabelNames) Less(i, j int) bool {
+	return l[i] < l[j]
+}
+
+func (l LabelNames) Swap(i, j int) {
+	l[i], l[j] = l[j], l[i]
+}
+
+func (l LabelNames) String() string {
+	labelStrings := make([]string, 0, len(l))
+	for _, label := range l {
+		labelStrings = append(labelStrings, string(label))
+	}
+	return strings.Join(labelStrings, ", ")
+}
+
+// A LabelValue is an associated value for a LabelName.
+type LabelValue string
+
+// IsValid returns true iff the string is a valid UTF8.
+func (lv LabelValue) IsValid() bool {
+	return utf8.ValidString(string(lv))
+}
+
+// LabelValues is a sortable LabelValue slice. It implements sort.Interface.
+type LabelValues []LabelValue
+
+func (l LabelValues) Len() int {
+	return len(l)
+}
+
+func (l LabelValues) Less(i, j int) bool {
+	return string(l[i]) < string(l[j])
+}
+
+func (l LabelValues) Swap(i, j int) {
+	l[i], l[j] = l[j], l[i]
+}
+
+// LabelPair pairs a name with a value.
+type LabelPair struct {
+	Name  LabelName
+	Value LabelValue
+}
+
+// LabelPairs is a sortable slice of LabelPair pointers. It implements
+// sort.Interface.
+type LabelPairs []*LabelPair
+
+func (l LabelPairs) Len() int {
+	return len(l)
+}
+
+func (l LabelPairs) Less(i, j int) bool {
+	switch {
+	case l[i].Name > l[j].Name:
+		return false
+	case l[i].Name < l[j].Name:
+		return true
+	case l[i].Value > l[j].Value:
+		return false
+	case l[i].Value < l[j].Value:
+		return true
+	default:
+		return false
+	}
+}
+
+func (l LabelPairs) Swap(i, j int) {
+	l[i], l[j] = l[j], l[i]
+}
diff --git a/vendor/github.com/prometheus/common/model/labels_test.go b/vendor/github.com/prometheus/common/model/labels_test.go
new file mode 100644
index 000000000..e8df28ffa
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/labels_test.go
@@ -0,0 +1,140 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"sort"
+	"testing"
+)
+
+func testLabelNames(t testing.TB) {
+	var scenarios = []struct {
+		in  LabelNames
+		out LabelNames
+	}{
+		{
+			in:  LabelNames{"ZZZ", "zzz"},
+			out: LabelNames{"ZZZ", "zzz"},
+		},
+		{
+			in:  LabelNames{"aaa", "AAA"},
+			out: LabelNames{"AAA", "aaa"},
+		},
+	}
+
+	for i, scenario := range scenarios {
+		sort.Sort(scenario.in)
+
+		for j, expected := range scenario.out {
+			if expected != scenario.in[j] {
+				t.Errorf("%d.%d expected %s, got %s", i, j, expected, scenario.in[j])
+			}
+		}
+	}
+}
+
+func TestLabelNames(t *testing.T) {
+	testLabelNames(t)
+}
+
+func BenchmarkLabelNames(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		testLabelNames(b)
+	}
+}
+
+func testLabelValues(t testing.TB) {
+	var scenarios = []struct {
+		in  LabelValues
+		out LabelValues
+	}{
+		{
+			in:  LabelValues{"ZZZ", "zzz"},
+			out: LabelValues{"ZZZ", "zzz"},
+		},
+		{
+			in:  LabelValues{"aaa", "AAA"},
+			out: LabelValues{"AAA", "aaa"},
+		},
+	}
+
+	for i, scenario := range scenarios {
+		sort.Sort(scenario.in)
+
+		for j, expected := range scenario.out {
+			if expected != scenario.in[j] {
+				t.Errorf("%d.%d expected %s, got %s", i, j, expected, scenario.in[j])
+			}
+		}
+	}
+}
+
+func TestLabelValues(t *testing.T) {
+	testLabelValues(t)
+}
+
+func BenchmarkLabelValues(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		testLabelValues(b)
+	}
+}
+
+func TestLabelNameIsValid(t *testing.T) {
+	var scenarios = []struct {
+		ln    LabelName
+		valid bool
+	}{
+		{
+			ln:    "Avalid_23name",
+			valid: true,
+		},
+		{
+			ln:    "_Avalid_23name",
+			valid: true,
+		},
+		{
+			ln:    "1valid_23name",
+			valid: false,
+		},
+		{
+			ln:    "avalid_23name",
+			valid: true,
+		},
+		{
+			ln:    "Ava:lid_23name",
+			valid: false,
+		},
+		{
+			ln:    "a lid_23name",
+			valid: false,
+		},
+		{
+			ln:    ":leading_colon",
+			valid: false,
+		},
+		{
+			ln:    "colon:in:the:middle",
+			valid: false,
+		},
+	}
+
+	for _, s := range scenarios {
+		if s.ln.IsValid() != s.valid {
+			t.Errorf("Expected %v for %q using IsValid method", s.valid, s.ln)
+		}
+		if LabelNameRE.MatchString(string(s.ln)) != s.valid {
+			t.Errorf("Expected %v for %q using regexp match", s.valid, s.ln)
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/common/model/labelset.go b/vendor/github.com/prometheus/common/model/labelset.go
new file mode 100644
index 000000000..6eda08a73
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/labelset.go
@@ -0,0 +1,169 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"encoding/json"
+	"fmt"
+	"sort"
+	"strings"
+)
+
+// A LabelSet is a collection of LabelName and LabelValue pairs.  The LabelSet
+// may be fully-qualified down to the point where it may resolve to a single
+// Metric in the data store or not.  All operations that occur within the realm
+// of a LabelSet can emit a vector of Metric entities to which the LabelSet may
+// match.
+type LabelSet map[LabelName]LabelValue
+
+// Validate checks whether all names and values in the label set
+// are valid.
+func (ls LabelSet) Validate() error {
+	for ln, lv := range ls {
+		if !ln.IsValid() {
+			return fmt.Errorf("invalid name %q", ln)
+		}
+		if !lv.IsValid() {
+			return fmt.Errorf("invalid value %q", lv)
+		}
+	}
+	return nil
+}
+
+// Equal returns true iff both label sets have exactly the same key/value pairs.
+func (ls LabelSet) Equal(o LabelSet) bool {
+	if len(ls) != len(o) {
+		return false
+	}
+	for ln, lv := range ls {
+		olv, ok := o[ln]
+		if !ok {
+			return false
+		}
+		if olv != lv {
+			return false
+		}
+	}
+	return true
+}
+
+// Before compares the metrics, using the following criteria:
+//
+// If m has fewer labels than o, it is before o. If it has more, it is not.
+//
+// If the number of labels is the same, the superset of all label names is
+// sorted alphanumerically. The first differing label pair found in that order
+// determines the outcome: If the label does not exist at all in m, then m is
+// before o, and vice versa. Otherwise the label value is compared
+// alphanumerically.
+//
+// If m and o are equal, the method returns false.
+func (ls LabelSet) Before(o LabelSet) bool {
+	if len(ls) < len(o) {
+		return true
+	}
+	if len(ls) > len(o) {
+		return false
+	}
+
+	lns := make(LabelNames, 0, len(ls)+len(o))
+	for ln := range ls {
+		lns = append(lns, ln)
+	}
+	for ln := range o {
+		lns = append(lns, ln)
+	}
+	// It's probably not worth it to de-dup lns.
+	sort.Sort(lns)
+	for _, ln := range lns {
+		mlv, ok := ls[ln]
+		if !ok {
+			return true
+		}
+		olv, ok := o[ln]
+		if !ok {
+			return false
+		}
+		if mlv < olv {
+			return true
+		}
+		if mlv > olv {
+			return false
+		}
+	}
+	return false
+}
+
+// Clone returns a copy of the label set.
+func (ls LabelSet) Clone() LabelSet {
+	lsn := make(LabelSet, len(ls))
+	for ln, lv := range ls {
+		lsn[ln] = lv
+	}
+	return lsn
+}
+
+// Merge is a helper function to non-destructively merge two label sets.
+func (l LabelSet) Merge(other LabelSet) LabelSet {
+	result := make(LabelSet, len(l))
+
+	for k, v := range l {
+		result[k] = v
+	}
+
+	for k, v := range other {
+		result[k] = v
+	}
+
+	return result
+}
+
+func (l LabelSet) String() string {
+	lstrs := make([]string, 0, len(l))
+	for l, v := range l {
+		lstrs = append(lstrs, fmt.Sprintf("%s=%q", l, v))
+	}
+
+	sort.Strings(lstrs)
+	return fmt.Sprintf("{%s}", strings.Join(lstrs, ", "))
+}
+
+// Fingerprint returns the LabelSet's fingerprint.
+func (ls LabelSet) Fingerprint() Fingerprint {
+	return labelSetToFingerprint(ls)
+}
+
+// FastFingerprint returns the LabelSet's Fingerprint calculated by a faster hashing
+// algorithm, which is, however, more susceptible to hash collisions.
+func (ls LabelSet) FastFingerprint() Fingerprint {
+	return labelSetToFastFingerprint(ls)
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface.
+func (l *LabelSet) UnmarshalJSON(b []byte) error {
+	var m map[LabelName]LabelValue
+	if err := json.Unmarshal(b, &m); err != nil {
+		return err
+	}
+	// encoding/json only unmarshals maps of the form map[string]T. It treats
+	// LabelName as a string and does not call its UnmarshalJSON method.
+	// Thus, we have to replicate the behavior here.
+	for ln := range m {
+		if !ln.IsValid() {
+			return fmt.Errorf("%q is not a valid label name", ln)
+		}
+	}
+	*l = LabelSet(m)
+	return nil
+}
diff --git a/vendor/github.com/prometheus/common/model/metric.go b/vendor/github.com/prometheus/common/model/metric.go
new file mode 100644
index 000000000..9dff899cb
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/metric.go
@@ -0,0 +1,103 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"fmt"
+	"regexp"
+	"sort"
+	"strings"
+)
+
+var (
+	separator = []byte{0}
+	// MetricNameRE is a regular expression matching valid metric
+	// names. Note that the IsValidMetricName function performs the same
+	// check but faster than a match with this regular expression.
+	MetricNameRE = regexp.MustCompile(`^[a-zA-Z_:][a-zA-Z0-9_:]*$`)
+)
+
+// A Metric is similar to a LabelSet, but the key difference is that a Metric is
+// a singleton and refers to one and only one stream of samples.
+type Metric LabelSet
+
+// Equal compares the metrics.
+func (m Metric) Equal(o Metric) bool {
+	return LabelSet(m).Equal(LabelSet(o))
+}
+
+// Before compares the metrics' underlying label sets.
+func (m Metric) Before(o Metric) bool {
+	return LabelSet(m).Before(LabelSet(o))
+}
+
+// Clone returns a copy of the Metric.
+func (m Metric) Clone() Metric {
+	clone := Metric{}
+	for k, v := range m {
+		clone[k] = v
+	}
+	return clone
+}
+
+func (m Metric) String() string {
+	metricName, hasName := m[MetricNameLabel]
+	numLabels := len(m) - 1
+	if !hasName {
+		numLabels = len(m)
+	}
+	labelStrings := make([]string, 0, numLabels)
+	for label, value := range m {
+		if label != MetricNameLabel {
+			labelStrings = append(labelStrings, fmt.Sprintf("%s=%q", label, value))
+		}
+	}
+
+	switch numLabels {
+	case 0:
+		if hasName {
+			return string(metricName)
+		}
+		return "{}"
+	default:
+		sort.Strings(labelStrings)
+		return fmt.Sprintf("%s{%s}", metricName, strings.Join(labelStrings, ", "))
+	}
+}
+
+// Fingerprint returns a Metric's Fingerprint.
+func (m Metric) Fingerprint() Fingerprint {
+	return LabelSet(m).Fingerprint()
+}
+
+// FastFingerprint returns a Metric's Fingerprint calculated by a faster hashing
+// algorithm, which is, however, more susceptible to hash collisions.
+func (m Metric) FastFingerprint() Fingerprint {
+	return LabelSet(m).FastFingerprint()
+}
+
+// IsValidMetricName returns true iff name matches the pattern of MetricNameRE.
+// This function, however, does not use MetricNameRE for the check but a much
+// faster hardcoded implementation.
+func IsValidMetricName(n LabelValue) bool {
+	if len(n) == 0 {
+		return false
+	}
+	for i, b := range n {
+		if !((b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || b == '_' || b == ':' || (b >= '0' && b <= '9' && i > 0)) {
+			return false
+		}
+	}
+	return true
+}
diff --git a/vendor/github.com/prometheus/common/model/metric_test.go b/vendor/github.com/prometheus/common/model/metric_test.go
new file mode 100644
index 000000000..06f9de525
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/metric_test.go
@@ -0,0 +1,132 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import "testing"
+
+func testMetric(t testing.TB) {
+	var scenarios = []struct {
+		input           LabelSet
+		fingerprint     Fingerprint
+		fastFingerprint Fingerprint
+	}{
+		{
+			input:           LabelSet{},
+			fingerprint:     14695981039346656037,
+			fastFingerprint: 14695981039346656037,
+		},
+		{
+			input: LabelSet{
+				"first_name":   "electro",
+				"occupation":   "robot",
+				"manufacturer": "westinghouse",
+			},
+			fingerprint:     5911716720268894962,
+			fastFingerprint: 11310079640881077873,
+		},
+		{
+			input: LabelSet{
+				"x": "y",
+			},
+			fingerprint:     8241431561484471700,
+			fastFingerprint: 13948396922932177635,
+		},
+		{
+			input: LabelSet{
+				"a": "bb",
+				"b": "c",
+			},
+			fingerprint:     3016285359649981711,
+			fastFingerprint: 3198632812309449502,
+		},
+		{
+			input: LabelSet{
+				"a":  "b",
+				"bb": "c",
+			},
+			fingerprint:     7122421792099404749,
+			fastFingerprint: 5774953389407657638,
+		},
+	}
+
+	for i, scenario := range scenarios {
+		input := Metric(scenario.input)
+
+		if scenario.fingerprint != input.Fingerprint() {
+			t.Errorf("%d. expected %d, got %d", i, scenario.fingerprint, input.Fingerprint())
+		}
+		if scenario.fastFingerprint != input.FastFingerprint() {
+			t.Errorf("%d. expected %d, got %d", i, scenario.fastFingerprint, input.FastFingerprint())
+		}
+	}
+}
+
+func TestMetric(t *testing.T) {
+	testMetric(t)
+}
+
+func BenchmarkMetric(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		testMetric(b)
+	}
+}
+
+func TestMetricNameIsValid(t *testing.T) {
+	var scenarios = []struct {
+		mn    LabelValue
+		valid bool
+	}{
+		{
+			mn:    "Avalid_23name",
+			valid: true,
+		},
+		{
+			mn:    "_Avalid_23name",
+			valid: true,
+		},
+		{
+			mn:    "1valid_23name",
+			valid: false,
+		},
+		{
+			mn:    "avalid_23name",
+			valid: true,
+		},
+		{
+			mn:    "Ava:lid_23name",
+			valid: true,
+		},
+		{
+			mn:    "a lid_23name",
+			valid: false,
+		},
+		{
+			mn:    ":leading_colon",
+			valid: true,
+		},
+		{
+			mn:    "colon:in:the:middle",
+			valid: true,
+		},
+	}
+
+	for _, s := range scenarios {
+		if IsValidMetricName(s.mn) != s.valid {
+			t.Errorf("Expected %v for %q using IsValidMetricName function", s.valid, s.mn)
+		}
+		if MetricNameRE.MatchString(string(s.mn)) != s.valid {
+			t.Errorf("Expected %v for %q using regexp matching", s.valid, s.mn)
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/common/model/model.go b/vendor/github.com/prometheus/common/model/model.go
new file mode 100644
index 000000000..a7b969170
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/model.go
@@ -0,0 +1,16 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package model contains common data structures that are shared across
+// Prometheus components and libraries.
+package model
diff --git a/vendor/github.com/prometheus/common/model/signature.go b/vendor/github.com/prometheus/common/model/signature.go
new file mode 100644
index 000000000..8762b13c6
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/signature.go
@@ -0,0 +1,144 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"sort"
+)
+
+// SeparatorByte is a byte that cannot occur in valid UTF-8 sequences and is
+// used to separate label names, label values, and other strings from each other
+// when calculating their combined hash value (aka signature aka fingerprint).
+const SeparatorByte byte = 255
+
+var (
+	// cache the signature of an empty label set.
+	emptyLabelSignature = hashNew()
+)
+
+// LabelsToSignature returns a quasi-unique signature (i.e., fingerprint) for a
+// given label set. (Collisions are possible but unlikely if the number of label
+// sets the function is applied to is small.)
+func LabelsToSignature(labels map[string]string) uint64 {
+	if len(labels) == 0 {
+		return emptyLabelSignature
+	}
+
+	labelNames := make([]string, 0, len(labels))
+	for labelName := range labels {
+		labelNames = append(labelNames, labelName)
+	}
+	sort.Strings(labelNames)
+
+	sum := hashNew()
+	for _, labelName := range labelNames {
+		sum = hashAdd(sum, labelName)
+		sum = hashAddByte(sum, SeparatorByte)
+		sum = hashAdd(sum, labels[labelName])
+		sum = hashAddByte(sum, SeparatorByte)
+	}
+	return sum
+}
+
+// labelSetToFingerprint works exactly as LabelsToSignature but takes a LabelSet as
+// parameter (rather than a label map) and returns a Fingerprint.
+func labelSetToFingerprint(ls LabelSet) Fingerprint {
+	if len(ls) == 0 {
+		return Fingerprint(emptyLabelSignature)
+	}
+
+	labelNames := make(LabelNames, 0, len(ls))
+	for labelName := range ls {
+		labelNames = append(labelNames, labelName)
+	}
+	sort.Sort(labelNames)
+
+	sum := hashNew()
+	for _, labelName := range labelNames {
+		sum = hashAdd(sum, string(labelName))
+		sum = hashAddByte(sum, SeparatorByte)
+		sum = hashAdd(sum, string(ls[labelName]))
+		sum = hashAddByte(sum, SeparatorByte)
+	}
+	return Fingerprint(sum)
+}
+
+// labelSetToFastFingerprint works similar to labelSetToFingerprint but uses a
+// faster and less allocation-heavy hash function, which is more susceptible to
+// create hash collisions. Therefore, collision detection should be applied.
+func labelSetToFastFingerprint(ls LabelSet) Fingerprint {
+	if len(ls) == 0 {
+		return Fingerprint(emptyLabelSignature)
+	}
+
+	var result uint64
+	for labelName, labelValue := range ls {
+		sum := hashNew()
+		sum = hashAdd(sum, string(labelName))
+		sum = hashAddByte(sum, SeparatorByte)
+		sum = hashAdd(sum, string(labelValue))
+		result ^= sum
+	}
+	return Fingerprint(result)
+}
+
+// SignatureForLabels works like LabelsToSignature but takes a Metric as
+// parameter (rather than a label map) and only includes the labels with the
+// specified LabelNames into the signature calculation. The labels passed in
+// will be sorted by this function.
+func SignatureForLabels(m Metric, labels ...LabelName) uint64 {
+	if len(labels) == 0 {
+		return emptyLabelSignature
+	}
+
+	sort.Sort(LabelNames(labels))
+
+	sum := hashNew()
+	for _, label := range labels {
+		sum = hashAdd(sum, string(label))
+		sum = hashAddByte(sum, SeparatorByte)
+		sum = hashAdd(sum, string(m[label]))
+		sum = hashAddByte(sum, SeparatorByte)
+	}
+	return sum
+}
+
+// SignatureWithoutLabels works like LabelsToSignature but takes a Metric as
+// parameter (rather than a label map) and excludes the labels with any of the
+// specified LabelNames from the signature calculation.
+func SignatureWithoutLabels(m Metric, labels map[LabelName]struct{}) uint64 {
+	if len(m) == 0 {
+		return emptyLabelSignature
+	}
+
+	labelNames := make(LabelNames, 0, len(m))
+	for labelName := range m {
+		if _, exclude := labels[labelName]; !exclude {
+			labelNames = append(labelNames, labelName)
+		}
+	}
+	if len(labelNames) == 0 {
+		return emptyLabelSignature
+	}
+	sort.Sort(labelNames)
+
+	sum := hashNew()
+	for _, labelName := range labelNames {
+		sum = hashAdd(sum, string(labelName))
+		sum = hashAddByte(sum, SeparatorByte)
+		sum = hashAdd(sum, string(m[labelName]))
+		sum = hashAddByte(sum, SeparatorByte)
+	}
+	return sum
+}
diff --git a/vendor/github.com/prometheus/common/model/signature_test.go b/vendor/github.com/prometheus/common/model/signature_test.go
new file mode 100644
index 000000000..d59c8a8c3
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/signature_test.go
@@ -0,0 +1,314 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"runtime"
+	"sync"
+	"testing"
+)
+
+func TestLabelsToSignature(t *testing.T) {
+	var scenarios = []struct {
+		in  map[string]string
+		out uint64
+	}{
+		{
+			in:  map[string]string{},
+			out: 14695981039346656037,
+		},
+		{
+			in:  map[string]string{"name": "garland, briggs", "fear": "love is not enough"},
+			out: 5799056148416392346,
+		},
+	}
+
+	for i, scenario := range scenarios {
+		actual := LabelsToSignature(scenario.in)
+
+		if actual != scenario.out {
+			t.Errorf("%d. expected %d, got %d", i, scenario.out, actual)
+		}
+	}
+}
+
+func TestMetricToFingerprint(t *testing.T) {
+	var scenarios = []struct {
+		in  LabelSet
+		out Fingerprint
+	}{
+		{
+			in:  LabelSet{},
+			out: 14695981039346656037,
+		},
+		{
+			in:  LabelSet{"name": "garland, briggs", "fear": "love is not enough"},
+			out: 5799056148416392346,
+		},
+	}
+
+	for i, scenario := range scenarios {
+		actual := labelSetToFingerprint(scenario.in)
+
+		if actual != scenario.out {
+			t.Errorf("%d. expected %d, got %d", i, scenario.out, actual)
+		}
+	}
+}
+
+func TestMetricToFastFingerprint(t *testing.T) {
+	var scenarios = []struct {
+		in  LabelSet
+		out Fingerprint
+	}{
+		{
+			in:  LabelSet{},
+			out: 14695981039346656037,
+		},
+		{
+			in:  LabelSet{"name": "garland, briggs", "fear": "love is not enough"},
+			out: 12952432476264840823,
+		},
+	}
+
+	for i, scenario := range scenarios {
+		actual := labelSetToFastFingerprint(scenario.in)
+
+		if actual != scenario.out {
+			t.Errorf("%d. expected %d, got %d", i, scenario.out, actual)
+		}
+	}
+}
+
+func TestSignatureForLabels(t *testing.T) {
+	var scenarios = []struct {
+		in     Metric
+		labels LabelNames
+		out    uint64
+	}{
+		{
+			in:     Metric{},
+			labels: nil,
+			out:    14695981039346656037,
+		},
+		{
+			in:     Metric{},
+			labels: LabelNames{"empty"},
+			out:    7187873163539638612,
+		},
+		{
+			in:     Metric{"name": "garland, briggs", "fear": "love is not enough"},
+			labels: LabelNames{"empty"},
+			out:    7187873163539638612,
+		},
+		{
+			in:     Metric{"name": "garland, briggs", "fear": "love is not enough"},
+			labels: LabelNames{"fear", "name"},
+			out:    5799056148416392346,
+		},
+		{
+			in:     Metric{"name": "garland, briggs", "fear": "love is not enough", "foo": "bar"},
+			labels: LabelNames{"fear", "name"},
+			out:    5799056148416392346,
+		},
+		{
+			in:     Metric{"name": "garland, briggs", "fear": "love is not enough"},
+			labels: LabelNames{},
+			out:    14695981039346656037,
+		},
+		{
+			in:     Metric{"name": "garland, briggs", "fear": "love is not enough"},
+			labels: nil,
+			out:    14695981039346656037,
+		},
+	}
+
+	for i, scenario := range scenarios {
+		actual := SignatureForLabels(scenario.in, scenario.labels...)
+
+		if actual != scenario.out {
+			t.Errorf("%d. expected %d, got %d", i, scenario.out, actual)
+		}
+	}
+}
+
+func TestSignatureWithoutLabels(t *testing.T) {
+	var scenarios = []struct {
+		in     Metric
+		labels map[LabelName]struct{}
+		out    uint64
+	}{
+		{
+			in:     Metric{},
+			labels: nil,
+			out:    14695981039346656037,
+		},
+		{
+			in:     Metric{"name": "garland, briggs", "fear": "love is not enough"},
+			labels: map[LabelName]struct{}{"fear": struct{}{}, "name": struct{}{}},
+			out:    14695981039346656037,
+		},
+		{
+			in:     Metric{"name": "garland, briggs", "fear": "love is not enough", "foo": "bar"},
+			labels: map[LabelName]struct{}{"foo": struct{}{}},
+			out:    5799056148416392346,
+		},
+		{
+			in:     Metric{"name": "garland, briggs", "fear": "love is not enough"},
+			labels: map[LabelName]struct{}{},
+			out:    5799056148416392346,
+		},
+		{
+			in:     Metric{"name": "garland, briggs", "fear": "love is not enough"},
+			labels: nil,
+			out:    5799056148416392346,
+		},
+	}
+
+	for i, scenario := range scenarios {
+		actual := SignatureWithoutLabels(scenario.in, scenario.labels)
+
+		if actual != scenario.out {
+			t.Errorf("%d. expected %d, got %d", i, scenario.out, actual)
+		}
+	}
+}
+
+func benchmarkLabelToSignature(b *testing.B, l map[string]string, e uint64) {
+	for i := 0; i < b.N; i++ {
+		if a := LabelsToSignature(l); a != e {
+			b.Fatalf("expected signature of %d for %s, got %d", e, l, a)
+		}
+	}
+}
+
+func BenchmarkLabelToSignatureScalar(b *testing.B) {
+	benchmarkLabelToSignature(b, nil, 14695981039346656037)
+}
+
+func BenchmarkLabelToSignatureSingle(b *testing.B) {
+	benchmarkLabelToSignature(b, map[string]string{"first-label": "first-label-value"}, 5146282821936882169)
+}
+
+func BenchmarkLabelToSignatureDouble(b *testing.B) {
+	benchmarkLabelToSignature(b, map[string]string{"first-label": "first-label-value", "second-label": "second-label-value"}, 3195800080984914717)
+}
+
+func BenchmarkLabelToSignatureTriple(b *testing.B) {
+	benchmarkLabelToSignature(b, map[string]string{"first-label": "first-label-value", "second-label": "second-label-value", "third-label": "third-label-value"}, 13843036195897128121)
+}
+
+func benchmarkMetricToFingerprint(b *testing.B, ls LabelSet, e Fingerprint) {
+	for i := 0; i < b.N; i++ {
+		if a := labelSetToFingerprint(ls); a != e {
+			b.Fatalf("expected signature of %d for %s, got %d", e, ls, a)
+		}
+	}
+}
+
+func BenchmarkMetricToFingerprintScalar(b *testing.B) {
+	benchmarkMetricToFingerprint(b, nil, 14695981039346656037)
+}
+
+func BenchmarkMetricToFingerprintSingle(b *testing.B) {
+	benchmarkMetricToFingerprint(b, LabelSet{"first-label": "first-label-value"}, 5146282821936882169)
+}
+
+func BenchmarkMetricToFingerprintDouble(b *testing.B) {
+	benchmarkMetricToFingerprint(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value"}, 3195800080984914717)
+}
+
+func BenchmarkMetricToFingerprintTriple(b *testing.B) {
+	benchmarkMetricToFingerprint(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value", "third-label": "third-label-value"}, 13843036195897128121)
+}
+
+func benchmarkMetricToFastFingerprint(b *testing.B, ls LabelSet, e Fingerprint) {
+	for i := 0; i < b.N; i++ {
+		if a := labelSetToFastFingerprint(ls); a != e {
+			b.Fatalf("expected signature of %d for %s, got %d", e, ls, a)
+		}
+	}
+}
+
+func BenchmarkMetricToFastFingerprintScalar(b *testing.B) {
+	benchmarkMetricToFastFingerprint(b, nil, 14695981039346656037)
+}
+
+func BenchmarkMetricToFastFingerprintSingle(b *testing.B) {
+	benchmarkMetricToFastFingerprint(b, LabelSet{"first-label": "first-label-value"}, 5147259542624943964)
+}
+
+func BenchmarkMetricToFastFingerprintDouble(b *testing.B) {
+	benchmarkMetricToFastFingerprint(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value"}, 18269973311206963528)
+}
+
+func BenchmarkMetricToFastFingerprintTriple(b *testing.B) {
+	benchmarkMetricToFastFingerprint(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value", "third-label": "third-label-value"}, 15738406913934009676)
+}
+
+func BenchmarkEmptyLabelSignature(b *testing.B) {
+	input := []map[string]string{nil, {}}
+
+	var ms runtime.MemStats
+	runtime.ReadMemStats(&ms)
+
+	alloc := ms.Alloc
+
+	for _, labels := range input {
+		LabelsToSignature(labels)
+	}
+
+	runtime.ReadMemStats(&ms)
+
+	if got := ms.Alloc; alloc != got {
+		b.Fatal("expected LabelsToSignature with empty labels not to perform allocations")
+	}
+}
+
+func benchmarkMetricToFastFingerprintConc(b *testing.B, ls LabelSet, e Fingerprint, concLevel int) {
+	var start, end sync.WaitGroup
+	start.Add(1)
+	end.Add(concLevel)
+
+	for i := 0; i < concLevel; i++ {
+		go func() {
+			start.Wait()
+			for j := b.N / concLevel; j >= 0; j-- {
+				if a := labelSetToFastFingerprint(ls); a != e {
+					b.Fatalf("expected signature of %d for %s, got %d", e, ls, a)
+				}
+			}
+			end.Done()
+		}()
+	}
+	b.ResetTimer()
+	start.Done()
+	end.Wait()
+}
+
+func BenchmarkMetricToFastFingerprintTripleConc1(b *testing.B) {
+	benchmarkMetricToFastFingerprintConc(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value", "third-label": "third-label-value"}, 15738406913934009676, 1)
+}
+
+func BenchmarkMetricToFastFingerprintTripleConc2(b *testing.B) {
+	benchmarkMetricToFastFingerprintConc(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value", "third-label": "third-label-value"}, 15738406913934009676, 2)
+}
+
+func BenchmarkMetricToFastFingerprintTripleConc4(b *testing.B) {
+	benchmarkMetricToFastFingerprintConc(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value", "third-label": "third-label-value"}, 15738406913934009676, 4)
+}
+
+func BenchmarkMetricToFastFingerprintTripleConc8(b *testing.B) {
+	benchmarkMetricToFastFingerprintConc(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value", "third-label": "third-label-value"}, 15738406913934009676, 8)
+}
diff --git a/vendor/github.com/prometheus/common/model/silence.go b/vendor/github.com/prometheus/common/model/silence.go
new file mode 100644
index 000000000..7538e2997
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/silence.go
@@ -0,0 +1,106 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"encoding/json"
+	"fmt"
+	"regexp"
+	"time"
+)
+
+// Matcher describes a matches the value of a given label.
+type Matcher struct {
+	Name    LabelName `json:"name"`
+	Value   string    `json:"value"`
+	IsRegex bool      `json:"isRegex"`
+}
+
+func (m *Matcher) UnmarshalJSON(b []byte) error {
+	type plain Matcher
+	if err := json.Unmarshal(b, (*plain)(m)); err != nil {
+		return err
+	}
+
+	if len(m.Name) == 0 {
+		return fmt.Errorf("label name in matcher must not be empty")
+	}
+	if m.IsRegex {
+		if _, err := regexp.Compile(m.Value); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Validate returns true iff all fields of the matcher have valid values.
+func (m *Matcher) Validate() error {
+	if !m.Name.IsValid() {
+		return fmt.Errorf("invalid name %q", m.Name)
+	}
+	if m.IsRegex {
+		if _, err := regexp.Compile(m.Value); err != nil {
+			return fmt.Errorf("invalid regular expression %q", m.Value)
+		}
+	} else if !LabelValue(m.Value).IsValid() || len(m.Value) == 0 {
+		return fmt.Errorf("invalid value %q", m.Value)
+	}
+	return nil
+}
+
+// Silence defines the representation of a silence definiton
+// in the Prometheus eco-system.
+type Silence struct {
+	ID uint64 `json:"id,omitempty"`
+
+	Matchers []*Matcher `json:"matchers"`
+
+	StartsAt time.Time `json:"startsAt"`
+	EndsAt   time.Time `json:"endsAt"`
+
+	CreatedAt time.Time `json:"createdAt,omitempty"`
+	CreatedBy string    `json:"createdBy"`
+	Comment   string    `json:"comment,omitempty"`
+}
+
+// Validate returns true iff all fields of the silence have valid values.
+func (s *Silence) Validate() error {
+	if len(s.Matchers) == 0 {
+		return fmt.Errorf("at least one matcher required")
+	}
+	for _, m := range s.Matchers {
+		if err := m.Validate(); err != nil {
+			return fmt.Errorf("invalid matcher: %s", err)
+		}
+	}
+	if s.StartsAt.IsZero() {
+		return fmt.Errorf("start time missing")
+	}
+	if s.EndsAt.IsZero() {
+		return fmt.Errorf("end time missing")
+	}
+	if s.EndsAt.Before(s.StartsAt) {
+		return fmt.Errorf("start time must be before end time")
+	}
+	if s.CreatedBy == "" {
+		return fmt.Errorf("creator information missing")
+	}
+	if s.Comment == "" {
+		return fmt.Errorf("comment missing")
+	}
+	if s.CreatedAt.IsZero() {
+		return fmt.Errorf("creation timestamp missing")
+	}
+	return nil
+}
diff --git a/vendor/github.com/prometheus/common/model/silence_test.go b/vendor/github.com/prometheus/common/model/silence_test.go
new file mode 100644
index 000000000..8eaaf0744
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/silence_test.go
@@ -0,0 +1,228 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestMatcherValidate(t *testing.T) {
+	var cases = []struct {
+		matcher *Matcher
+		err     string
+	}{
+		{
+			matcher: &Matcher{
+				Name:  "name",
+				Value: "value",
+			},
+		},
+		{
+			matcher: &Matcher{
+				Name:    "name",
+				Value:   "value",
+				IsRegex: true,
+			},
+		},
+		{
+			matcher: &Matcher{
+				Name:  "name!",
+				Value: "value",
+			},
+			err: "invalid name",
+		},
+		{
+			matcher: &Matcher{
+				Name:  "",
+				Value: "value",
+			},
+			err: "invalid name",
+		},
+		{
+			matcher: &Matcher{
+				Name:  "name",
+				Value: "value\xff",
+			},
+			err: "invalid value",
+		},
+		{
+			matcher: &Matcher{
+				Name:  "name",
+				Value: "",
+			},
+			err: "invalid value",
+		},
+	}
+
+	for i, c := range cases {
+		err := c.matcher.Validate()
+		if err == nil {
+			if c.err == "" {
+				continue
+			}
+			t.Errorf("%d. Expected error %q but got none", i, c.err)
+			continue
+		}
+		if c.err == "" && err != nil {
+			t.Errorf("%d. Expected no error but got %q", i, err)
+			continue
+		}
+		if !strings.Contains(err.Error(), c.err) {
+			t.Errorf("%d. Expected error to contain %q but got %q", i, c.err, err)
+		}
+	}
+}
+
+func TestSilenceValidate(t *testing.T) {
+	ts := time.Now()
+
+	var cases = []struct {
+		sil *Silence
+		err string
+	}{
+		{
+			sil: &Silence{
+				Matchers: []*Matcher{
+					{Name: "name", Value: "value"},
+				},
+				StartsAt:  ts,
+				EndsAt:    ts,
+				CreatedAt: ts,
+				CreatedBy: "name",
+				Comment:   "comment",
+			},
+		},
+		{
+			sil: &Silence{
+				Matchers: []*Matcher{
+					{Name: "name", Value: "value"},
+					{Name: "name", Value: "value"},
+					{Name: "name", Value: "value"},
+					{Name: "name", Value: "value", IsRegex: true},
+				},
+				StartsAt:  ts,
+				EndsAt:    ts,
+				CreatedAt: ts,
+				CreatedBy: "name",
+				Comment:   "comment",
+			},
+		},
+		{
+			sil: &Silence{
+				Matchers: []*Matcher{
+					{Name: "name", Value: "value"},
+				},
+				StartsAt:  ts,
+				EndsAt:    ts.Add(-1 * time.Minute),
+				CreatedAt: ts,
+				CreatedBy: "name",
+				Comment:   "comment",
+			},
+			err: "start time must be before end time",
+		},
+		{
+			sil: &Silence{
+				Matchers: []*Matcher{
+					{Name: "name", Value: "value"},
+				},
+				StartsAt:  ts,
+				CreatedAt: ts,
+				CreatedBy: "name",
+				Comment:   "comment",
+			},
+			err: "end time missing",
+		},
+		{
+			sil: &Silence{
+				Matchers: []*Matcher{
+					{Name: "name", Value: "value"},
+				},
+				EndsAt:    ts,
+				CreatedAt: ts,
+				CreatedBy: "name",
+				Comment:   "comment",
+			},
+			err: "start time missing",
+		},
+		{
+			sil: &Silence{
+				Matchers: []*Matcher{
+					{Name: "!name", Value: "value"},
+				},
+				StartsAt:  ts,
+				EndsAt:    ts,
+				CreatedAt: ts,
+				CreatedBy: "name",
+				Comment:   "comment",
+			},
+			err: "invalid matcher",
+		},
+		{
+			sil: &Silence{
+				Matchers: []*Matcher{
+					{Name: "name", Value: "value"},
+				},
+				StartsAt:  ts,
+				EndsAt:    ts,
+				CreatedAt: ts,
+				CreatedBy: "name",
+			},
+			err: "comment missing",
+		},
+		{
+			sil: &Silence{
+				Matchers: []*Matcher{
+					{Name: "name", Value: "value"},
+				},
+				StartsAt:  ts,
+				EndsAt:    ts,
+				CreatedBy: "name",
+				Comment:   "comment",
+			},
+			err: "creation timestamp missing",
+		},
+		{
+			sil: &Silence{
+				Matchers: []*Matcher{
+					{Name: "name", Value: "value"},
+				},
+				StartsAt:  ts,
+				EndsAt:    ts,
+				CreatedAt: ts,
+				Comment:   "comment",
+			},
+			err: "creator information missing",
+		},
+	}
+
+	for i, c := range cases {
+		err := c.sil.Validate()
+		if err == nil {
+			if c.err == "" {
+				continue
+			}
+			t.Errorf("%d. Expected error %q but got none", i, c.err)
+			continue
+		}
+		if c.err == "" && err != nil {
+			t.Errorf("%d. Expected no error but got %q", i, err)
+			continue
+		}
+		if !strings.Contains(err.Error(), c.err) {
+			t.Errorf("%d. Expected error to contain %q but got %q", i, c.err, err)
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/common/model/time.go b/vendor/github.com/prometheus/common/model/time.go
new file mode 100644
index 000000000..548968aeb
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/time.go
@@ -0,0 +1,249 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"fmt"
+	"math"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+)
+
+const (
+	// MinimumTick is the minimum supported time resolution. This has to be
+	// at least time.Second in order for the code below to work.
+	minimumTick = time.Millisecond
+	// second is the Time duration equivalent to one second.
+	second = int64(time.Second / minimumTick)
+	// The number of nanoseconds per minimum tick.
+	nanosPerTick = int64(minimumTick / time.Nanosecond)
+
+	// Earliest is the earliest Time representable. Handy for
+	// initializing a high watermark.
+	Earliest = Time(math.MinInt64)
+	// Latest is the latest Time representable. Handy for initializing
+	// a low watermark.
+	Latest = Time(math.MaxInt64)
+)
+
+// Time is the number of milliseconds since the epoch
+// (1970-01-01 00:00 UTC) excluding leap seconds.
+type Time int64
+
+// Interval describes and interval between two timestamps.
+type Interval struct {
+	Start, End Time
+}
+
+// Now returns the current time as a Time.
+func Now() Time {
+	return TimeFromUnixNano(time.Now().UnixNano())
+}
+
+// TimeFromUnix returns the Time equivalent to the Unix Time t
+// provided in seconds.
+func TimeFromUnix(t int64) Time {
+	return Time(t * second)
+}
+
+// TimeFromUnixNano returns the Time equivalent to the Unix Time
+// t provided in nanoseconds.
+func TimeFromUnixNano(t int64) Time {
+	return Time(t / nanosPerTick)
+}
+
+// Equal reports whether two Times represent the same instant.
+func (t Time) Equal(o Time) bool {
+	return t == o
+}
+
+// Before reports whether the Time t is before o.
+func (t Time) Before(o Time) bool {
+	return t < o
+}
+
+// After reports whether the Time t is after o.
+func (t Time) After(o Time) bool {
+	return t > o
+}
+
+// Add returns the Time t + d.
+func (t Time) Add(d time.Duration) Time {
+	return t + Time(d/minimumTick)
+}
+
+// Sub returns the Duration t - o.
+func (t Time) Sub(o Time) time.Duration {
+	return time.Duration(t-o) * minimumTick
+}
+
+// Time returns the time.Time representation of t.
+func (t Time) Time() time.Time {
+	return time.Unix(int64(t)/second, (int64(t)%second)*nanosPerTick)
+}
+
+// Unix returns t as a Unix time, the number of seconds elapsed
+// since January 1, 1970 UTC.
+func (t Time) Unix() int64 {
+	return int64(t) / second
+}
+
+// UnixNano returns t as a Unix time, the number of nanoseconds elapsed
+// since January 1, 1970 UTC.
+func (t Time) UnixNano() int64 {
+	return int64(t) * nanosPerTick
+}
+
+// The number of digits after the dot.
+var dotPrecision = int(math.Log10(float64(second)))
+
+// String returns a string representation of the Time.
+func (t Time) String() string {
+	return strconv.FormatFloat(float64(t)/float64(second), 'f', -1, 64)
+}
+
+// MarshalJSON implements the json.Marshaler interface.
+func (t Time) MarshalJSON() ([]byte, error) {
+	return []byte(t.String()), nil
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface.
+func (t *Time) UnmarshalJSON(b []byte) error {
+	p := strings.Split(string(b), ".")
+	switch len(p) {
+	case 1:
+		v, err := strconv.ParseInt(string(p[0]), 10, 64)
+		if err != nil {
+			return err
+		}
+		*t = Time(v * second)
+
+	case 2:
+		v, err := strconv.ParseInt(string(p[0]), 10, 64)
+		if err != nil {
+			return err
+		}
+		v *= second
+
+		prec := dotPrecision - len(p[1])
+		if prec < 0 {
+			p[1] = p[1][:dotPrecision]
+		} else if prec > 0 {
+			p[1] = p[1] + strings.Repeat("0", prec)
+		}
+
+		va, err := strconv.ParseInt(p[1], 10, 32)
+		if err != nil {
+			return err
+		}
+
+		*t = Time(v + va)
+
+	default:
+		return fmt.Errorf("invalid time %q", string(b))
+	}
+	return nil
+}
+
+// Duration wraps time.Duration. It is used to parse the custom duration format
+// from YAML.
+// This type should not propagate beyond the scope of input/output processing.
+type Duration time.Duration
+
+var durationRE = regexp.MustCompile("^([0-9]+)(y|w|d|h|m|s|ms)$")
+
+// StringToDuration parses a string into a time.Duration, assuming that a year
+// always has 365d, a week always has 7d, and a day always has 24h.
+func ParseDuration(durationStr string) (Duration, error) {
+	matches := durationRE.FindStringSubmatch(durationStr)
+	if len(matches) != 3 {
+		return 0, fmt.Errorf("not a valid duration string: %q", durationStr)
+	}
+	var (
+		n, _ = strconv.Atoi(matches[1])
+		dur  = time.Duration(n) * time.Millisecond
+	)
+	switch unit := matches[2]; unit {
+	case "y":
+		dur *= 1000 * 60 * 60 * 24 * 365
+	case "w":
+		dur *= 1000 * 60 * 60 * 24 * 7
+	case "d":
+		dur *= 1000 * 60 * 60 * 24
+	case "h":
+		dur *= 1000 * 60 * 60
+	case "m":
+		dur *= 1000 * 60
+	case "s":
+		dur *= 1000
+	case "ms":
+		// Value already correct
+	default:
+		return 0, fmt.Errorf("invalid time unit in duration string: %q", unit)
+	}
+	return Duration(dur), nil
+}
+
+func (d Duration) String() string {
+	var (
+		ms   = int64(time.Duration(d) / time.Millisecond)
+		unit = "ms"
+	)
+	factors := map[string]int64{
+		"y":  1000 * 60 * 60 * 24 * 365,
+		"w":  1000 * 60 * 60 * 24 * 7,
+		"d":  1000 * 60 * 60 * 24,
+		"h":  1000 * 60 * 60,
+		"m":  1000 * 60,
+		"s":  1000,
+		"ms": 1,
+	}
+
+	switch int64(0) {
+	case ms % factors["y"]:
+		unit = "y"
+	case ms % factors["w"]:
+		unit = "w"
+	case ms % factors["d"]:
+		unit = "d"
+	case ms % factors["h"]:
+		unit = "h"
+	case ms % factors["m"]:
+		unit = "m"
+	case ms % factors["s"]:
+		unit = "s"
+	}
+	return fmt.Sprintf("%v%v", ms/factors[unit], unit)
+}
+
+// MarshalYAML implements the yaml.Marshaler interface.
+func (d Duration) MarshalYAML() (interface{}, error) {
+	return d.String(), nil
+}
+
+// UnmarshalYAML implements the yaml.Unmarshaler interface.
+func (d *Duration) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	var s string
+	if err := unmarshal(&s); err != nil {
+		return err
+	}
+	dur, err := ParseDuration(s)
+	if err != nil {
+		return err
+	}
+	*d = dur
+	return nil
+}
diff --git a/vendor/github.com/prometheus/common/model/time_test.go b/vendor/github.com/prometheus/common/model/time_test.go
new file mode 100644
index 000000000..45ffd872d
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/time_test.go
@@ -0,0 +1,129 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"testing"
+	"time"
+)
+
+func TestComparators(t *testing.T) {
+	t1a := TimeFromUnix(0)
+	t1b := TimeFromUnix(0)
+	t2 := TimeFromUnix(2*second - 1)
+
+	if !t1a.Equal(t1b) {
+		t.Fatalf("Expected %s to be equal to %s", t1a, t1b)
+	}
+	if t1a.Equal(t2) {
+		t.Fatalf("Expected %s to not be equal to %s", t1a, t2)
+	}
+
+	if !t1a.Before(t2) {
+		t.Fatalf("Expected %s to be before %s", t1a, t2)
+	}
+	if t1a.Before(t1b) {
+		t.Fatalf("Expected %s to not be before %s", t1a, t1b)
+	}
+
+	if !t2.After(t1a) {
+		t.Fatalf("Expected %s to be after %s", t2, t1a)
+	}
+	if t1b.After(t1a) {
+		t.Fatalf("Expected %s to not be after %s", t1b, t1a)
+	}
+}
+
+func TestTimeConversions(t *testing.T) {
+	unixSecs := int64(1136239445)
+	unixNsecs := int64(123456789)
+	unixNano := unixSecs*1e9 + unixNsecs
+
+	t1 := time.Unix(unixSecs, unixNsecs-unixNsecs%nanosPerTick)
+	t2 := time.Unix(unixSecs, unixNsecs)
+
+	ts := TimeFromUnixNano(unixNano)
+	if !ts.Time().Equal(t1) {
+		t.Fatalf("Expected %s, got %s", t1, ts.Time())
+	}
+
+	// Test available precision.
+	ts = TimeFromUnixNano(t2.UnixNano())
+	if !ts.Time().Equal(t1) {
+		t.Fatalf("Expected %s, got %s", t1, ts.Time())
+	}
+
+	if ts.UnixNano() != unixNano-unixNano%nanosPerTick {
+		t.Fatalf("Expected %d, got %d", unixNano, ts.UnixNano())
+	}
+}
+
+func TestDuration(t *testing.T) {
+	duration := time.Second + time.Minute + time.Hour
+	goTime := time.Unix(1136239445, 0)
+
+	ts := TimeFromUnix(goTime.Unix())
+	if !goTime.Add(duration).Equal(ts.Add(duration).Time()) {
+		t.Fatalf("Expected %s to be equal to %s", goTime.Add(duration), ts.Add(duration))
+	}
+
+	earlier := ts.Add(-duration)
+	delta := ts.Sub(earlier)
+	if delta != duration {
+		t.Fatalf("Expected %s to be equal to %s", delta, duration)
+	}
+}
+
+func TestParseDuration(t *testing.T) {
+	var cases = []struct {
+		in  string
+		out time.Duration
+	}{
+		{
+			in:  "324ms",
+			out: 324 * time.Millisecond,
+		}, {
+			in:  "3s",
+			out: 3 * time.Second,
+		}, {
+			in:  "5m",
+			out: 5 * time.Minute,
+		}, {
+			in:  "1h",
+			out: time.Hour,
+		}, {
+			in:  "4d",
+			out: 4 * 24 * time.Hour,
+		}, {
+			in:  "3w",
+			out: 3 * 7 * 24 * time.Hour,
+		}, {
+			in:  "10y",
+			out: 10 * 365 * 24 * time.Hour,
+		},
+	}
+
+	for _, c := range cases {
+		d, err := ParseDuration(c.in)
+		if err != nil {
+			t.Errorf("Unexpected error on input %q", c.in)
+		}
+		if time.Duration(d) != c.out {
+			t.Errorf("Expected %v but got %v", c.out, d)
+		}
+		if d.String() != c.in {
+			t.Errorf("Expected duration string %q but got %q", c.in, d.String())
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/common/model/value.go b/vendor/github.com/prometheus/common/model/value.go
new file mode 100644
index 000000000..7728abaee
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/value.go
@@ -0,0 +1,419 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"encoding/json"
+	"fmt"
+	"math"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+var (
+	// ZeroSamplePair is the pseudo zero-value of SamplePair used to signal a
+	// non-existing sample pair. It is a SamplePair with timestamp Earliest and
+	// value 0.0. Note that the natural zero value of SamplePair has a timestamp
+	// of 0, which is possible to appear in a real SamplePair and thus not
+	// suitable to signal a non-existing SamplePair.
+	ZeroSamplePair = SamplePair{Timestamp: Earliest}
+
+	// ZeroSample is the pseudo zero-value of Sample used to signal a
+	// non-existing sample. It is a Sample with timestamp Earliest, value 0.0,
+	// and metric nil. Note that the natural zero value of Sample has a timestamp
+	// of 0, which is possible to appear in a real Sample and thus not suitable
+	// to signal a non-existing Sample.
+	ZeroSample = Sample{Timestamp: Earliest}
+)
+
+// A SampleValue is a representation of a value for a given sample at a given
+// time.
+type SampleValue float64
+
+// MarshalJSON implements json.Marshaler.
+func (v SampleValue) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.String())
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (v *SampleValue) UnmarshalJSON(b []byte) error {
+	if len(b) < 2 || b[0] != '"' || b[len(b)-1] != '"' {
+		return fmt.Errorf("sample value must be a quoted string")
+	}
+	f, err := strconv.ParseFloat(string(b[1:len(b)-1]), 64)
+	if err != nil {
+		return err
+	}
+	*v = SampleValue(f)
+	return nil
+}
+
+// Equal returns true if the value of v and o is equal or if both are NaN. Note
+// that v==o is false if both are NaN. If you want the conventional float
+// behavior, use == to compare two SampleValues.
+func (v SampleValue) Equal(o SampleValue) bool {
+	if v == o {
+		return true
+	}
+	return math.IsNaN(float64(v)) && math.IsNaN(float64(o))
+}
+
+func (v SampleValue) String() string {
+	return strconv.FormatFloat(float64(v), 'f', -1, 64)
+}
+
+// SamplePair pairs a SampleValue with a Timestamp.
+type SamplePair struct {
+	Timestamp Time
+	Value     SampleValue
+}
+
+// MarshalJSON implements json.Marshaler.
+func (s SamplePair) MarshalJSON() ([]byte, error) {
+	t, err := json.Marshal(s.Timestamp)
+	if err != nil {
+		return nil, err
+	}
+	v, err := json.Marshal(s.Value)
+	if err != nil {
+		return nil, err
+	}
+	return []byte(fmt.Sprintf("[%s,%s]", t, v)), nil
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (s *SamplePair) UnmarshalJSON(b []byte) error {
+	v := [...]json.Unmarshaler{&s.Timestamp, &s.Value}
+	return json.Unmarshal(b, &v)
+}
+
+// Equal returns true if this SamplePair and o have equal Values and equal
+// Timestamps. The sematics of Value equality is defined by SampleValue.Equal.
+func (s *SamplePair) Equal(o *SamplePair) bool {
+	return s == o || (s.Value.Equal(o.Value) && s.Timestamp.Equal(o.Timestamp))
+}
+
+func (s SamplePair) String() string {
+	return fmt.Sprintf("%s @[%s]", s.Value, s.Timestamp)
+}
+
+// Sample is a sample pair associated with a metric.
+type Sample struct {
+	Metric    Metric      `json:"metric"`
+	Value     SampleValue `json:"value"`
+	Timestamp Time        `json:"timestamp"`
+}
+
+// Equal compares first the metrics, then the timestamp, then the value. The
+// sematics of value equality is defined by SampleValue.Equal.
+func (s *Sample) Equal(o *Sample) bool {
+	if s == o {
+		return true
+	}
+
+	if !s.Metric.Equal(o.Metric) {
+		return false
+	}
+	if !s.Timestamp.Equal(o.Timestamp) {
+		return false
+	}
+	if s.Value.Equal(o.Value) {
+		return false
+	}
+
+	return true
+}
+
+func (s Sample) String() string {
+	return fmt.Sprintf("%s => %s", s.Metric, SamplePair{
+		Timestamp: s.Timestamp,
+		Value:     s.Value,
+	})
+}
+
+// MarshalJSON implements json.Marshaler.
+func (s Sample) MarshalJSON() ([]byte, error) {
+	v := struct {
+		Metric Metric     `json:"metric"`
+		Value  SamplePair `json:"value"`
+	}{
+		Metric: s.Metric,
+		Value: SamplePair{
+			Timestamp: s.Timestamp,
+			Value:     s.Value,
+		},
+	}
+
+	return json.Marshal(&v)
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (s *Sample) UnmarshalJSON(b []byte) error {
+	v := struct {
+		Metric Metric     `json:"metric"`
+		Value  SamplePair `json:"value"`
+	}{
+		Metric: s.Metric,
+		Value: SamplePair{
+			Timestamp: s.Timestamp,
+			Value:     s.Value,
+		},
+	}
+
+	if err := json.Unmarshal(b, &v); err != nil {
+		return err
+	}
+
+	s.Metric = v.Metric
+	s.Timestamp = v.Value.Timestamp
+	s.Value = v.Value.Value
+
+	return nil
+}
+
+// Samples is a sortable Sample slice. It implements sort.Interface.
+type Samples []*Sample
+
+func (s Samples) Len() int {
+	return len(s)
+}
+
+// Less compares first the metrics, then the timestamp.
+func (s Samples) Less(i, j int) bool {
+	switch {
+	case s[i].Metric.Before(s[j].Metric):
+		return true
+	case s[j].Metric.Before(s[i].Metric):
+		return false
+	case s[i].Timestamp.Before(s[j].Timestamp):
+		return true
+	default:
+		return false
+	}
+}
+
+func (s Samples) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+
+// Equal compares two sets of samples and returns true if they are equal.
+func (s Samples) Equal(o Samples) bool {
+	if len(s) != len(o) {
+		return false
+	}
+
+	for i, sample := range s {
+		if !sample.Equal(o[i]) {
+			return false
+		}
+	}
+	return true
+}
+
+// SampleStream is a stream of Values belonging to an attached COWMetric.
+type SampleStream struct {
+	Metric Metric       `json:"metric"`
+	Values []SamplePair `json:"values"`
+}
+
+func (ss SampleStream) String() string {
+	vals := make([]string, len(ss.Values))
+	for i, v := range ss.Values {
+		vals[i] = v.String()
+	}
+	return fmt.Sprintf("%s =>\n%s", ss.Metric, strings.Join(vals, "\n"))
+}
+
+// Value is a generic interface for values resulting from a query evaluation.
+type Value interface {
+	Type() ValueType
+	String() string
+}
+
+func (Matrix) Type() ValueType  { return ValMatrix }
+func (Vector) Type() ValueType  { return ValVector }
+func (*Scalar) Type() ValueType { return ValScalar }
+func (*String) Type() ValueType { return ValString }
+
+type ValueType int
+
+const (
+	ValNone ValueType = iota
+	ValScalar
+	ValVector
+	ValMatrix
+	ValString
+)
+
+// MarshalJSON implements json.Marshaler.
+func (et ValueType) MarshalJSON() ([]byte, error) {
+	return json.Marshal(et.String())
+}
+
+func (et *ValueType) UnmarshalJSON(b []byte) error {
+	var s string
+	if err := json.Unmarshal(b, &s); err != nil {
+		return err
+	}
+	switch s {
+	case "<ValNone>":
+		*et = ValNone
+	case "scalar":
+		*et = ValScalar
+	case "vector":
+		*et = ValVector
+	case "matrix":
+		*et = ValMatrix
+	case "string":
+		*et = ValString
+	default:
+		return fmt.Errorf("unknown value type %q", s)
+	}
+	return nil
+}
+
+func (e ValueType) String() string {
+	switch e {
+	case ValNone:
+		return "<ValNone>"
+	case ValScalar:
+		return "scalar"
+	case ValVector:
+		return "vector"
+	case ValMatrix:
+		return "matrix"
+	case ValString:
+		return "string"
+	}
+	panic("ValueType.String: unhandled value type")
+}
+
+// Scalar is a scalar value evaluated at the set timestamp.
+type Scalar struct {
+	Value     SampleValue `json:"value"`
+	Timestamp Time        `json:"timestamp"`
+}
+
+func (s Scalar) String() string {
+	return fmt.Sprintf("scalar: %v @[%v]", s.Value, s.Timestamp)
+}
+
+// MarshalJSON implements json.Marshaler.
+func (s Scalar) MarshalJSON() ([]byte, error) {
+	v := strconv.FormatFloat(float64(s.Value), 'f', -1, 64)
+	return json.Marshal([...]interface{}{s.Timestamp, string(v)})
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (s *Scalar) UnmarshalJSON(b []byte) error {
+	var f string
+	v := [...]interface{}{&s.Timestamp, &f}
+
+	if err := json.Unmarshal(b, &v); err != nil {
+		return err
+	}
+
+	value, err := strconv.ParseFloat(f, 64)
+	if err != nil {
+		return fmt.Errorf("error parsing sample value: %s", err)
+	}
+	s.Value = SampleValue(value)
+	return nil
+}
+
+// String is a string value evaluated at the set timestamp.
+type String struct {
+	Value     string `json:"value"`
+	Timestamp Time   `json:"timestamp"`
+}
+
+func (s *String) String() string {
+	return s.Value
+}
+
+// MarshalJSON implements json.Marshaler.
+func (s String) MarshalJSON() ([]byte, error) {
+	return json.Marshal([]interface{}{s.Timestamp, s.Value})
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (s *String) UnmarshalJSON(b []byte) error {
+	v := [...]interface{}{&s.Timestamp, &s.Value}
+	return json.Unmarshal(b, &v)
+}
+
+// Vector is basically only an alias for Samples, but the
+// contract is that in a Vector, all Samples have the same timestamp.
+type Vector []*Sample
+
+func (vec Vector) String() string {
+	entries := make([]string, len(vec))
+	for i, s := range vec {
+		entries[i] = s.String()
+	}
+	return strings.Join(entries, "\n")
+}
+
+func (vec Vector) Len() int      { return len(vec) }
+func (vec Vector) Swap(i, j int) { vec[i], vec[j] = vec[j], vec[i] }
+
+// Less compares first the metrics, then the timestamp.
+func (vec Vector) Less(i, j int) bool {
+	switch {
+	case vec[i].Metric.Before(vec[j].Metric):
+		return true
+	case vec[j].Metric.Before(vec[i].Metric):
+		return false
+	case vec[i].Timestamp.Before(vec[j].Timestamp):
+		return true
+	default:
+		return false
+	}
+}
+
+// Equal compares two sets of samples and returns true if they are equal.
+func (vec Vector) Equal(o Vector) bool {
+	if len(vec) != len(o) {
+		return false
+	}
+
+	for i, sample := range vec {
+		if !sample.Equal(o[i]) {
+			return false
+		}
+	}
+	return true
+}
+
+// Matrix is a list of time series.
+type Matrix []*SampleStream
+
+func (m Matrix) Len() int           { return len(m) }
+func (m Matrix) Less(i, j int) bool { return m[i].Metric.Before(m[j].Metric) }
+func (m Matrix) Swap(i, j int)      { m[i], m[j] = m[j], m[i] }
+
+func (mat Matrix) String() string {
+	matCp := make(Matrix, len(mat))
+	copy(matCp, mat)
+	sort.Sort(matCp)
+
+	strs := make([]string, len(matCp))
+
+	for i, ss := range matCp {
+		strs[i] = ss.String()
+	}
+
+	return strings.Join(strs, "\n")
+}
diff --git a/vendor/github.com/prometheus/common/model/value_test.go b/vendor/github.com/prometheus/common/model/value_test.go
new file mode 100644
index 000000000..8d2b69ea1
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/value_test.go
@@ -0,0 +1,417 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"encoding/json"
+	"math"
+	"reflect"
+	"sort"
+	"testing"
+)
+
+func TestEqual(t *testing.T) {
+	tests := map[string]struct {
+		in1, in2 SampleValue
+		want     bool
+	}{
+		"equal floats": {
+			in1:  3.14,
+			in2:  3.14,
+			want: true,
+		},
+		"unequal floats": {
+			in1:  3.14,
+			in2:  3.1415,
+			want: false,
+		},
+		"positive inifinities": {
+			in1:  SampleValue(math.Inf(+1)),
+			in2:  SampleValue(math.Inf(+1)),
+			want: true,
+		},
+		"negative inifinities": {
+			in1:  SampleValue(math.Inf(-1)),
+			in2:  SampleValue(math.Inf(-1)),
+			want: true,
+		},
+		"different inifinities": {
+			in1:  SampleValue(math.Inf(+1)),
+			in2:  SampleValue(math.Inf(-1)),
+			want: false,
+		},
+		"number and infinity": {
+			in1:  42,
+			in2:  SampleValue(math.Inf(+1)),
+			want: false,
+		},
+		"number and NaN": {
+			in1:  42,
+			in2:  SampleValue(math.NaN()),
+			want: false,
+		},
+		"NaNs": {
+			in1:  SampleValue(math.NaN()),
+			in2:  SampleValue(math.NaN()),
+			want: true, // !!!
+		},
+	}
+
+	for name, test := range tests {
+		got := test.in1.Equal(test.in2)
+		if got != test.want {
+			t.Errorf("Comparing %s, %f and %f: got %t, want %t", name, test.in1, test.in2, got, test.want)
+		}
+	}
+}
+
+func TestSamplePairJSON(t *testing.T) {
+	input := []struct {
+		plain string
+		value SamplePair
+	}{
+		{
+			plain: `[1234.567,"123.1"]`,
+			value: SamplePair{
+				Value:     123.1,
+				Timestamp: 1234567,
+			},
+		},
+	}
+
+	for _, test := range input {
+		b, err := json.Marshal(test.value)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		if string(b) != test.plain {
+			t.Errorf("encoding error: expected %q, got %q", test.plain, b)
+			continue
+		}
+
+		var sp SamplePair
+		err = json.Unmarshal(b, &sp)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		if sp != test.value {
+			t.Errorf("decoding error: expected %v, got %v", test.value, sp)
+		}
+	}
+}
+
+func TestSampleJSON(t *testing.T) {
+	input := []struct {
+		plain string
+		value Sample
+	}{
+		{
+			plain: `{"metric":{"__name__":"test_metric"},"value":[1234.567,"123.1"]}`,
+			value: Sample{
+				Metric: Metric{
+					MetricNameLabel: "test_metric",
+				},
+				Value:     123.1,
+				Timestamp: 1234567,
+			},
+		},
+	}
+
+	for _, test := range input {
+		b, err := json.Marshal(test.value)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		if string(b) != test.plain {
+			t.Errorf("encoding error: expected %q, got %q", test.plain, b)
+			continue
+		}
+
+		var sv Sample
+		err = json.Unmarshal(b, &sv)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		if !reflect.DeepEqual(sv, test.value) {
+			t.Errorf("decoding error: expected %v, got %v", test.value, sv)
+		}
+	}
+}
+
+func TestVectorJSON(t *testing.T) {
+	input := []struct {
+		plain string
+		value Vector
+	}{
+		{
+			plain: `[]`,
+			value: Vector{},
+		},
+		{
+			plain: `[{"metric":{"__name__":"test_metric"},"value":[1234.567,"123.1"]}]`,
+			value: Vector{&Sample{
+				Metric: Metric{
+					MetricNameLabel: "test_metric",
+				},
+				Value:     123.1,
+				Timestamp: 1234567,
+			}},
+		},
+		{
+			plain: `[{"metric":{"__name__":"test_metric"},"value":[1234.567,"123.1"]},{"metric":{"foo":"bar"},"value":[1.234,"+Inf"]}]`,
+			value: Vector{
+				&Sample{
+					Metric: Metric{
+						MetricNameLabel: "test_metric",
+					},
+					Value:     123.1,
+					Timestamp: 1234567,
+				},
+				&Sample{
+					Metric: Metric{
+						"foo": "bar",
+					},
+					Value:     SampleValue(math.Inf(1)),
+					Timestamp: 1234,
+				},
+			},
+		},
+	}
+
+	for _, test := range input {
+		b, err := json.Marshal(test.value)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		if string(b) != test.plain {
+			t.Errorf("encoding error: expected %q, got %q", test.plain, b)
+			continue
+		}
+
+		var vec Vector
+		err = json.Unmarshal(b, &vec)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		if !reflect.DeepEqual(vec, test.value) {
+			t.Errorf("decoding error: expected %v, got %v", test.value, vec)
+		}
+	}
+}
+
+func TestScalarJSON(t *testing.T) {
+	input := []struct {
+		plain string
+		value Scalar
+	}{
+		{
+			plain: `[123.456,"456"]`,
+			value: Scalar{
+				Timestamp: 123456,
+				Value:     456,
+			},
+		},
+		{
+			plain: `[123123.456,"+Inf"]`,
+			value: Scalar{
+				Timestamp: 123123456,
+				Value:     SampleValue(math.Inf(1)),
+			},
+		},
+		{
+			plain: `[123123.456,"-Inf"]`,
+			value: Scalar{
+				Timestamp: 123123456,
+				Value:     SampleValue(math.Inf(-1)),
+			},
+		},
+	}
+
+	for _, test := range input {
+		b, err := json.Marshal(test.value)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		if string(b) != test.plain {
+			t.Errorf("encoding error: expected %q, got %q", test.plain, b)
+			continue
+		}
+
+		var sv Scalar
+		err = json.Unmarshal(b, &sv)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		if sv != test.value {
+			t.Errorf("decoding error: expected %v, got %v", test.value, sv)
+		}
+	}
+}
+
+func TestStringJSON(t *testing.T) {
+	input := []struct {
+		plain string
+		value String
+	}{
+		{
+			plain: `[123.456,"test"]`,
+			value: String{
+				Timestamp: 123456,
+				Value:     "test",
+			},
+		},
+		{
+			plain: `[123123.456,"台北"]`,
+			value: String{
+				Timestamp: 123123456,
+				Value:     "台北",
+			},
+		},
+	}
+
+	for _, test := range input {
+		b, err := json.Marshal(test.value)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		if string(b) != test.plain {
+			t.Errorf("encoding error: expected %q, got %q", test.plain, b)
+			continue
+		}
+
+		var sv String
+		err = json.Unmarshal(b, &sv)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		if sv != test.value {
+			t.Errorf("decoding error: expected %v, got %v", test.value, sv)
+		}
+	}
+}
+
+func TestVectorSort(t *testing.T) {
+	input := Vector{
+		&Sample{
+			Metric: Metric{
+				MetricNameLabel: "A",
+			},
+			Timestamp: 1,
+		},
+		&Sample{
+			Metric: Metric{
+				MetricNameLabel: "A",
+			},
+			Timestamp: 2,
+		},
+		&Sample{
+			Metric: Metric{
+				MetricNameLabel: "C",
+			},
+			Timestamp: 1,
+		},
+		&Sample{
+			Metric: Metric{
+				MetricNameLabel: "C",
+			},
+			Timestamp: 2,
+		},
+		&Sample{
+			Metric: Metric{
+				MetricNameLabel: "B",
+			},
+			Timestamp: 1,
+		},
+		&Sample{
+			Metric: Metric{
+				MetricNameLabel: "B",
+			},
+			Timestamp: 2,
+		},
+	}
+
+	expected := Vector{
+		&Sample{
+			Metric: Metric{
+				MetricNameLabel: "A",
+			},
+			Timestamp: 1,
+		},
+		&Sample{
+			Metric: Metric{
+				MetricNameLabel: "A",
+			},
+			Timestamp: 2,
+		},
+		&Sample{
+			Metric: Metric{
+				MetricNameLabel: "B",
+			},
+			Timestamp: 1,
+		},
+		&Sample{
+			Metric: Metric{
+				MetricNameLabel: "B",
+			},
+			Timestamp: 2,
+		},
+		&Sample{
+			Metric: Metric{
+				MetricNameLabel: "C",
+			},
+			Timestamp: 1,
+		},
+		&Sample{
+			Metric: Metric{
+				MetricNameLabel: "C",
+			},
+			Timestamp: 2,
+		},
+	}
+
+	sort.Sort(input)
+
+	for i, actual := range input {
+		actualFp := actual.Metric.Fingerprint()
+		expectedFp := expected[i].Metric.Fingerprint()
+
+		if actualFp != expectedFp {
+			t.Fatalf("%d. Incorrect fingerprint. Got %s; want %s", i, actualFp.String(), expectedFp.String())
+		}
+
+		if actual.Timestamp != expected[i].Timestamp {
+			t.Fatalf("%d. Incorrect timestamp. Got %s; want %s", i, actual.Timestamp, expected[i].Timestamp)
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/common/route/route.go b/vendor/github.com/prometheus/common/route/route.go
new file mode 100644
index 000000000..930b52d4f
--- /dev/null
+++ b/vendor/github.com/prometheus/common/route/route.go
@@ -0,0 +1,137 @@
+package route
+
+import (
+	"fmt"
+	"net/http"
+	"sync"
+
+	"github.com/julienschmidt/httprouter"
+	"golang.org/x/net/context"
+)
+
+var (
+	mtx   = sync.RWMutex{}
+	ctxts = map[*http.Request]context.Context{}
+)
+
+// Context returns the context for the request.
+func Context(r *http.Request) context.Context {
+	mtx.RLock()
+	defer mtx.RUnlock()
+	return ctxts[r]
+}
+
+type param string
+
+// Param returns param p for the context.
+func Param(ctx context.Context, p string) string {
+	return ctx.Value(param(p)).(string)
+}
+
+// WithParam returns a new context with param p set to v.
+func WithParam(ctx context.Context, p, v string) context.Context {
+	return context.WithValue(ctx, param(p), v)
+}
+
+type contextFn func(r *http.Request) (context.Context, error)
+
+// Router wraps httprouter.Router and adds support for prefixed sub-routers
+// and per-request context injections.
+type Router struct {
+	rtr    *httprouter.Router
+	prefix string
+	ctxFn  contextFn
+}
+
+// New returns a new Router.
+func New(ctxFn contextFn) *Router {
+	if ctxFn == nil {
+		ctxFn = func(r *http.Request) (context.Context, error) {
+			return context.Background(), nil
+		}
+	}
+	return &Router{
+		rtr:   httprouter.New(),
+		ctxFn: ctxFn,
+	}
+}
+
+// WithPrefix returns a router that prefixes all registered routes with prefix.
+func (r *Router) WithPrefix(prefix string) *Router {
+	return &Router{rtr: r.rtr, prefix: r.prefix + prefix, ctxFn: r.ctxFn}
+}
+
+// handle turns a HandlerFunc into an httprouter.Handle.
+func (r *Router) handle(h http.HandlerFunc) httprouter.Handle {
+	return func(w http.ResponseWriter, req *http.Request, params httprouter.Params) {
+		reqCtx, err := r.ctxFn(req)
+		if err != nil {
+			http.Error(w, fmt.Sprintf("Error creating request context: %v", err), http.StatusBadRequest)
+			return
+		}
+		ctx, cancel := context.WithCancel(reqCtx)
+		defer cancel()
+
+		for _, p := range params {
+			ctx = context.WithValue(ctx, param(p.Key), p.Value)
+		}
+
+		mtx.Lock()
+		ctxts[req] = ctx
+		mtx.Unlock()
+
+		h(w, req)
+
+		mtx.Lock()
+		delete(ctxts, req)
+		mtx.Unlock()
+	}
+}
+
+// Get registers a new GET route.
+func (r *Router) Get(path string, h http.HandlerFunc) {
+	r.rtr.GET(r.prefix+path, r.handle(h))
+}
+
+// Options registers a new OPTIONS route.
+func (r *Router) Options(path string, h http.HandlerFunc) {
+	r.rtr.OPTIONS(r.prefix+path, r.handle(h))
+}
+
+// Del registers a new DELETE route.
+func (r *Router) Del(path string, h http.HandlerFunc) {
+	r.rtr.DELETE(r.prefix+path, r.handle(h))
+}
+
+// Put registers a new PUT route.
+func (r *Router) Put(path string, h http.HandlerFunc) {
+	r.rtr.PUT(r.prefix+path, r.handle(h))
+}
+
+// Post registers a new POST route.
+func (r *Router) Post(path string, h http.HandlerFunc) {
+	r.rtr.POST(r.prefix+path, r.handle(h))
+}
+
+// Redirect takes an absolute path and sends an internal HTTP redirect for it,
+// prefixed by the router's path prefix. Note that this method does not include
+// functionality for handling relative paths or full URL redirects.
+func (r *Router) Redirect(w http.ResponseWriter, req *http.Request, path string, code int) {
+	http.Redirect(w, req, r.prefix+path, code)
+}
+
+// ServeHTTP implements http.Handler.
+func (r *Router) ServeHTTP(w http.ResponseWriter, req *http.Request) {
+	r.rtr.ServeHTTP(w, req)
+}
+
+// FileServe returns a new http.HandlerFunc that serves files from dir.
+// Using routes must provide the *filepath parameter.
+func FileServe(dir string) http.HandlerFunc {
+	fs := http.FileServer(http.Dir(dir))
+
+	return func(w http.ResponseWriter, r *http.Request) {
+		r.URL.Path = Param(Context(r), "filepath")
+		fs.ServeHTTP(w, r)
+	}
+}
diff --git a/vendor/github.com/prometheus/common/route/route_test.go b/vendor/github.com/prometheus/common/route/route_test.go
new file mode 100644
index 000000000..4055d69d5
--- /dev/null
+++ b/vendor/github.com/prometheus/common/route/route_test.go
@@ -0,0 +1,75 @@
+package route
+
+import (
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"golang.org/x/net/context"
+)
+
+func TestRedirect(t *testing.T) {
+	router := New(nil).WithPrefix("/test/prefix")
+	w := httptest.NewRecorder()
+	r, err := http.NewRequest("GET", "http://localhost:9090/foo", nil)
+	if err != nil {
+		t.Fatalf("Error building test request: %s", err)
+	}
+
+	router.Redirect(w, r, "/some/endpoint", http.StatusFound)
+	if w.Code != http.StatusFound {
+		t.Fatalf("Unexpected redirect status code: got %d, want %d", w.Code, http.StatusFound)
+	}
+
+	want := "/test/prefix/some/endpoint"
+	got := w.Header()["Location"][0]
+	if want != got {
+		t.Fatalf("Unexpected redirect location: got %s, want %s", got, want)
+	}
+}
+
+func TestContextFn(t *testing.T) {
+	router := New(func(r *http.Request) (context.Context, error) {
+		return context.WithValue(context.Background(), "testkey", "testvalue"), nil
+	})
+
+	router.Get("/test", func(w http.ResponseWriter, r *http.Request) {
+		want := "testvalue"
+		got := Context(r).Value("testkey")
+		if want != got {
+			t.Fatalf("Unexpected context value: want %q, got %q", want, got)
+		}
+	})
+
+	r, err := http.NewRequest("GET", "http://localhost:9090/test", nil)
+	if err != nil {
+		t.Fatalf("Error building test request: %s", err)
+	}
+	router.ServeHTTP(nil, r)
+}
+
+func TestContextFnError(t *testing.T) {
+	router := New(func(r *http.Request) (context.Context, error) {
+		return context.Background(), fmt.Errorf("test error")
+	})
+
+	router.Get("/test", func(w http.ResponseWriter, r *http.Request) {})
+
+	r, err := http.NewRequest("GET", "http://localhost:9090/test", nil)
+	if err != nil {
+		t.Fatalf("Error building test request: %s", err)
+	}
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, r)
+
+	if w.Code != http.StatusBadRequest {
+		t.Fatalf("Unexpected response status: got %q, want %q", w.Code, http.StatusBadRequest)
+	}
+
+	want := "Error creating request context: test error\n"
+	got := w.Body.String()
+	if want != got {
+		t.Fatalf("Unexpected response body: got %q, want %q", got, want)
+	}
+}
diff --git a/vendor/github.com/prometheus/common/version/info.go b/vendor/github.com/prometheus/common/version/info.go
new file mode 100644
index 000000000..84489a510
--- /dev/null
+++ b/vendor/github.com/prometheus/common/version/info.go
@@ -0,0 +1,89 @@
+// Copyright 2016 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package version
+
+import (
+	"bytes"
+	"fmt"
+	"runtime"
+	"strings"
+	"text/template"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+// Build information. Populated at build-time.
+var (
+	Version   string
+	Revision  string
+	Branch    string
+	BuildUser string
+	BuildDate string
+	GoVersion = runtime.Version()
+)
+
+// NewCollector returns a collector which exports metrics about current version information.
+func NewCollector(program string) *prometheus.GaugeVec {
+	buildInfo := prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Namespace: program,
+			Name:      "build_info",
+			Help: fmt.Sprintf(
+				"A metric with a constant '1' value labeled by version, revision, branch, and goversion from which %s was built.",
+				program,
+			),
+		},
+		[]string{"version", "revision", "branch", "goversion"},
+	)
+	buildInfo.WithLabelValues(Version, Revision, Branch, GoVersion).Set(1)
+	return buildInfo
+}
+
+// versionInfoTmpl contains the template used by Info.
+var versionInfoTmpl = `
+{{.program}}, version {{.version}} (branch: {{.branch}}, revision: {{.revision}})
+  build user:       {{.buildUser}}
+  build date:       {{.buildDate}}
+  go version:       {{.goVersion}}
+`
+
+// Print returns version information.
+func Print(program string) string {
+	m := map[string]string{
+		"program":   program,
+		"version":   Version,
+		"revision":  Revision,
+		"branch":    Branch,
+		"buildUser": BuildUser,
+		"buildDate": BuildDate,
+		"goVersion": GoVersion,
+	}
+	t := template.Must(template.New("version").Parse(versionInfoTmpl))
+
+	var buf bytes.Buffer
+	if err := t.ExecuteTemplate(&buf, "version", m); err != nil {
+		panic(err)
+	}
+	return strings.TrimSpace(buf.String())
+}
+
+// Info returns version, branch and revision information.
+func Info() string {
+	return fmt.Sprintf("(version=%s, branch=%s, revision=%s)", Version, Branch, Revision)
+}
+
+// BuildContext returns goVersion, buildUser and buildDate information.
+func BuildContext() string {
+	return fmt.Sprintf("(go=%s, user=%s, date=%s)", GoVersion, BuildUser, BuildDate)
+}
diff --git a/vendor/github.com/prometheus/procfs/.travis.yml b/vendor/github.com/prometheus/procfs/.travis.yml
new file mode 100644
index 000000000..2b4554da5
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/.travis.yml
@@ -0,0 +1,5 @@
+sudo: false
+language: go
+go:
+    - 1.5
+    - 1.6
diff --git a/vendor/github.com/prometheus/procfs/AUTHORS.md b/vendor/github.com/prometheus/procfs/AUTHORS.md
new file mode 100644
index 000000000..0c802dd87
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/AUTHORS.md
@@ -0,0 +1,20 @@
+The Prometheus project was started by Matt T. Proud (emeritus) and
+Julius Volz in 2012.
+
+Maintainers of this repository:
+
+* Tobias Schmidt <ts@soundcloud.com>
+
+The following individuals have contributed code to this repository
+(listed in alphabetical order):
+
+* Armen Baghumian <abaghumian@noggin.com.au>
+* Bjoern Rabenstein <beorn@soundcloud.com>
+* David Cournapeau <cournape@gmail.com>
+* Ji-Hoon, Seol <jihoon.seol@gmail.com>
+* Jonas Große Sundrup <cherti@letopolis.de>
+* Julius Volz <julius.volz@gmail.com>
+* Matthias Rampke <mr@soundcloud.com>
+* Nicky Gerritsen <nicky@streamone.nl>
+* Rémi Audebert <contact@halfr.net>
+* Tobias Schmidt <tobidt@gmail.com>
diff --git a/vendor/github.com/prometheus/procfs/CONTRIBUTING.md b/vendor/github.com/prometheus/procfs/CONTRIBUTING.md
new file mode 100644
index 000000000..5705f0fbe
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/CONTRIBUTING.md
@@ -0,0 +1,18 @@
+# Contributing
+
+Prometheus uses GitHub to manage reviews of pull requests.
+
+* If you have a trivial fix or improvement, go ahead and create a pull
+  request, addressing (with `@...`) one or more of the maintainers
+  (see [AUTHORS.md](AUTHORS.md)) in the description of the pull request.
+
+* If you plan to do something more involved, first discuss your ideas
+  on our [mailing list](https://groups.google.com/forum/?fromgroups#!forum/prometheus-developers).
+  This will avoid unnecessary work and surely give you and us a good deal
+  of inspiration.
+
+* Relevant coding style guidelines are the [Go Code Review
+  Comments](https://code.google.com/p/go-wiki/wiki/CodeReviewComments)
+  and the _Formatting and style_ section of Peter Bourgon's [Go: Best
+  Practices for Production
+  Environments](http://peter.bourgon.org/go-in-production/#formatting-and-style).
diff --git a/vendor/github.com/prometheus/procfs/LICENSE b/vendor/github.com/prometheus/procfs/LICENSE
new file mode 100644
index 000000000..261eeb9e9
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/github.com/prometheus/procfs/Makefile b/vendor/github.com/prometheus/procfs/Makefile
new file mode 100644
index 000000000..c264a49d1
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/Makefile
@@ -0,0 +1,6 @@
+ci:
+	! gofmt -l *.go | read nothing
+	go vet
+	go test -v ./...
+	go get github.com/golang/lint/golint
+	golint *.go
diff --git a/vendor/github.com/prometheus/procfs/NOTICE b/vendor/github.com/prometheus/procfs/NOTICE
new file mode 100644
index 000000000..53c5e9aa1
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/NOTICE
@@ -0,0 +1,7 @@
+procfs provides functions to retrieve system, kernel and process
+metrics from the pseudo-filesystem proc.
+
+Copyright 2014-2015 The Prometheus Authors
+
+This product includes software developed at
+SoundCloud Ltd. (http://soundcloud.com/).
diff --git a/vendor/github.com/prometheus/procfs/README.md b/vendor/github.com/prometheus/procfs/README.md
new file mode 100644
index 000000000..6e7ee6b8b
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/README.md
@@ -0,0 +1,10 @@
+# procfs
+
+This procfs package provides functions to retrieve system, kernel and process
+metrics from the pseudo-filesystem proc.
+
+*WARNING*: This package is a work in progress. Its API may still break in
+backwards-incompatible ways without warnings. Use it at your own risk.
+
+[![GoDoc](https://godoc.org/github.com/prometheus/procfs?status.png)](https://godoc.org/github.com/prometheus/procfs)
+[![Build Status](https://travis-ci.org/prometheus/procfs.svg?branch=master)](https://travis-ci.org/prometheus/procfs)
diff --git a/vendor/github.com/prometheus/procfs/doc.go b/vendor/github.com/prometheus/procfs/doc.go
new file mode 100644
index 000000000..e2acd6d40
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/doc.go
@@ -0,0 +1,45 @@
+// Copyright 2014 Prometheus Team
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package procfs provides functions to retrieve system, kernel and process
+// metrics from the pseudo-filesystem proc.
+//
+// Example:
+//
+//    package main
+//
+//    import (
+//    	"fmt"
+//    	"log"
+//
+//    	"github.com/prometheus/procfs"
+//    )
+//
+//    func main() {
+//    	p, err := procfs.Self()
+//    	if err != nil {
+//    		log.Fatalf("could not get process: %s", err)
+//    	}
+//
+//    	stat, err := p.NewStat()
+//    	if err != nil {
+//    		log.Fatalf("could not get process stat: %s", err)
+//    	}
+//
+//    	fmt.Printf("command:  %s\n", stat.Comm)
+//    	fmt.Printf("cpu time: %fs\n", stat.CPUTime())
+//    	fmt.Printf("vsize:    %dB\n", stat.VirtualMemory())
+//    	fmt.Printf("rss:      %dB\n", stat.ResidentMemory())
+//    }
+//
+package procfs
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26231/cmdline b/vendor/github.com/prometheus/procfs/fixtures/26231/cmdline
new file mode 100644
index 000000000..d2d8ef887
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/cmdline
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26231/comm b/vendor/github.com/prometheus/procfs/fixtures/26231/comm
new file mode 100644
index 000000000..f027e0d4b
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/comm
@@ -0,0 +1 @@
+vim
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26231/exe b/vendor/github.com/prometheus/procfs/fixtures/26231/exe
new file mode 120000
index 000000000..a91bec4da
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/exe
@@ -0,0 +1 @@
+/usr/bin/vim
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26231/fd/0 b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/0
new file mode 120000
index 000000000..da9c5dff3
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/0
@@ -0,0 +1 @@
+../../symlinktargets/abc
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26231/fd/1 b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/1
new file mode 120000
index 000000000..ca47b50ca
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/1
@@ -0,0 +1 @@
+../../symlinktargets/def
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26231/fd/10 b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/10
new file mode 120000
index 000000000..c08683168
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/10
@@ -0,0 +1 @@
+../../symlinktargets/xyz
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26231/fd/2 b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/2
new file mode 120000
index 000000000..66731c068
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/2
@@ -0,0 +1 @@
+../../symlinktargets/ghi
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26231/fd/3 b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/3
new file mode 120000
index 000000000..0135dce35
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/fd/3
@@ -0,0 +1 @@
+../../symlinktargets/uvw
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26231/io b/vendor/github.com/prometheus/procfs/fixtures/26231/io
new file mode 100644
index 000000000..b6210a7a7
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/io
@@ -0,0 +1,7 @@
+rchar: 750339
+wchar: 818609
+syscr: 7405
+syscw: 5245
+read_bytes: 1024
+write_bytes: 2048
+cancelled_write_bytes: -1024
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26231/limits b/vendor/github.com/prometheus/procfs/fixtures/26231/limits
new file mode 100644
index 000000000..23c6b6898
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/limits
@@ -0,0 +1,17 @@
+Limit                     Soft Limit           Hard Limit           Units
+Max cpu time              unlimited            unlimited            seconds
+Max file size             unlimited            unlimited            bytes
+Max data size             unlimited            unlimited            bytes
+Max stack size            8388608              unlimited            bytes
+Max core file size        0                    unlimited            bytes
+Max resident set          unlimited            unlimited            bytes
+Max processes             62898                62898                processes
+Max open files            2048                 4096                 files
+Max locked memory         65536                65536                bytes
+Max address space         unlimited            unlimited            bytes
+Max file locks            unlimited            unlimited            locks
+Max pending signals       62898                62898                signals
+Max msgqueue size         819200               819200               bytes
+Max nice priority         0                    0
+Max realtime priority     0                    0
+Max realtime timeout      unlimited            unlimited            us
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26231/stat b/vendor/github.com/prometheus/procfs/fixtures/26231/stat
new file mode 100644
index 000000000..438aaa9dc
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26231/stat
@@ -0,0 +1 @@
+26231 (vim) R 5392 7446 5392 34835 7446 4218880 32533 309516 26 82 1677 44 158 99 20 0 1 0 82375 56274944 1981 18446744073709551615 4194304 6294284 140736914091744 140736914087944 139965136429984 0 0 12288 1870679807 0 0 0 17 0 0 0 31 0 0 8391624 8481048 16420864 140736914093252 140736914093279 140736914093279 140736914096107 0
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26232/cmdline b/vendor/github.com/prometheus/procfs/fixtures/26232/cmdline
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/cmdline
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26232/comm b/vendor/github.com/prometheus/procfs/fixtures/26232/comm
new file mode 100644
index 000000000..62361ca78
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/comm
@@ -0,0 +1 @@
+ata_sff
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26232/fd/0 b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/0
new file mode 120000
index 000000000..da9c5dff3
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/0
@@ -0,0 +1 @@
+../../symlinktargets/abc
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26232/fd/1 b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/1
new file mode 120000
index 000000000..ca47b50ca
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/1
@@ -0,0 +1 @@
+../../symlinktargets/def
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26232/fd/2 b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/2
new file mode 120000
index 000000000..66731c068
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/2
@@ -0,0 +1 @@
+../../symlinktargets/ghi
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26232/fd/3 b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/3
new file mode 120000
index 000000000..0135dce35
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/3
@@ -0,0 +1 @@
+../../symlinktargets/uvw
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26232/fd/4 b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/4
new file mode 120000
index 000000000..c08683168
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/fd/4
@@ -0,0 +1 @@
+../../symlinktargets/xyz
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26232/limits b/vendor/github.com/prometheus/procfs/fixtures/26232/limits
new file mode 100644
index 000000000..3f9bf16a9
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/limits
@@ -0,0 +1,17 @@
+Limit                     Soft Limit           Hard Limit           Units     
+Max cpu time              unlimited            unlimited            seconds   
+Max file size             unlimited            unlimited            bytes     
+Max data size             unlimited            unlimited            bytes     
+Max stack size            8388608              unlimited            bytes     
+Max core file size        0                    unlimited            bytes     
+Max resident set          unlimited            unlimited            bytes     
+Max processes             29436                29436                processes 
+Max open files            1024                 4096                 files     
+Max locked memory         65536                65536                bytes     
+Max address space         unlimited            unlimited            bytes     
+Max file locks            unlimited            unlimited            locks     
+Max pending signals       29436                29436                signals   
+Max msgqueue size         819200               819200               bytes     
+Max nice priority         0                    0                    
+Max realtime priority     0                    0                    
+Max realtime timeout      unlimited            unlimited            us        
diff --git a/vendor/github.com/prometheus/procfs/fixtures/26232/stat b/vendor/github.com/prometheus/procfs/fixtures/26232/stat
new file mode 100644
index 000000000..321b16073
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/26232/stat
@@ -0,0 +1 @@
+33 (ata_sff) S 2 0 0 0 -1 69238880 0 0 0 0 0 0 0 0 0 -20 1 0 5 0 0 18446744073709551615 0 0 0 0 0 0 0 2147483647 0 18446744073709551615 0 0 17 1 0 0 0 0 0 0 0 0 0 0 0 0 0
diff --git a/vendor/github.com/prometheus/procfs/fixtures/584/stat b/vendor/github.com/prometheus/procfs/fixtures/584/stat
new file mode 100644
index 000000000..65b9369d1
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/584/stat
@@ -0,0 +1,2 @@
+1020 ((a b ) ( c d) ) R 28378 1020 28378 34842 1020 4218880 286 0 0 0 0 0 0 0 20 0 1 0 10839175 10395648 155 18446744073709551615 4194304 4238788 140736466511168 140736466511168 140609271124624 0 0 0 0 0 0 0 17 5 0 0 0 0 0 6336016 6337300 25579520 140736466515030 140736466515061 140736466515061 140736466518002 0
+#!/bin/cat /proc/self/stat
diff --git a/vendor/github.com/prometheus/procfs/fixtures/mdstat b/vendor/github.com/prometheus/procfs/fixtures/mdstat
new file mode 100644
index 000000000..4430bdee2
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/mdstat
@@ -0,0 +1,26 @@
+Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
+md3 : active raid6 sda1[8] sdh1[7] sdg1[6] sdf1[5] sde1[11] sdd1[3] sdc1[10] sdb1[9]
+      5853468288 blocks super 1.2 level 6, 64k chunk, algorithm 2 [8/8] [UUUUUUUU]
+      
+md127 : active raid1 sdi2[0] sdj2[1]
+      312319552 blocks [2/2] [UU]
+      
+md0 : active raid1 sdk[2](S) sdi1[0] sdj1[1]
+      248896 blocks [2/2] [UU]
+      
+md4 : inactive raid1 sda3[0] sdb3[1]
+      4883648 blocks [2/2] [UU]
+
+md6 : active raid1 sdb2[2] sda2[0]
+      195310144 blocks [2/1] [U_]
+      [=>...................]  recovery =  8.5% (16775552/195310144) finish=17.0min speed=259783K/sec
+
+md8 : active raid1 sdb1[1] sda1[0]
+      195310144 blocks [2/2] [UU]
+      [=>...................]  resync =  8.5% (16775552/195310144) finish=17.0min speed=259783K/sec
+
+md7 : active raid6 sdb1[0] sde1[3] sdd1[2] sdc1[1]
+      7813735424 blocks super 1.2 level 6, 512k chunk, algorithm 2 [4/3] [U_UU]
+      bitmap: 0/30 pages [0KB], 65536KB chunk
+
+unused devices: <none>
diff --git a/vendor/github.com/prometheus/procfs/fixtures/net/ip_vs b/vendor/github.com/prometheus/procfs/fixtures/net/ip_vs
new file mode 100644
index 000000000..6a6a97d7d
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/net/ip_vs
@@ -0,0 +1,14 @@
+IP Virtual Server version 1.2.1 (size=4096)
+Prot LocalAddress:Port Scheduler Flags
+  -> RemoteAddress:Port Forward Weight ActiveConn InActConn
+TCP  C0A80016:0CEA wlc  
+  -> C0A85216:0CEA      Tunnel  100    248        2         
+  -> C0A85318:0CEA      Tunnel  100    248        2         
+  -> C0A85315:0CEA      Tunnel  100    248        1         
+TCP  C0A80039:0CEA wlc  
+  -> C0A85416:0CEA      Tunnel  0      0          0         
+  -> C0A85215:0CEA      Tunnel  100    1499       0         
+  -> C0A83215:0CEA      Tunnel  100    1498       0         
+TCP  C0A80037:0CEA wlc  
+  -> C0A8321A:0CEA      Tunnel  0      0          0         
+  -> C0A83120:0CEA      Tunnel  100    0          0         
diff --git a/vendor/github.com/prometheus/procfs/fixtures/net/ip_vs_stats b/vendor/github.com/prometheus/procfs/fixtures/net/ip_vs_stats
new file mode 100644
index 000000000..c00724e0f
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/net/ip_vs_stats
@@ -0,0 +1,6 @@
+   Total Incoming Outgoing         Incoming         Outgoing
+   Conns  Packets  Packets            Bytes            Bytes
+ 16AA370 E33656E5        0     51D8C8883AB3                0
+
+ Conns/s   Pkts/s   Pkts/s          Bytes/s          Bytes/s
+       4    1FB3C        0          1282A8F                0
diff --git a/vendor/github.com/prometheus/procfs/fixtures/self b/vendor/github.com/prometheus/procfs/fixtures/self
new file mode 120000
index 000000000..1eeedea3d
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/self
@@ -0,0 +1 @@
+26231
\ No newline at end of file
diff --git a/vendor/github.com/prometheus/procfs/fixtures/stat b/vendor/github.com/prometheus/procfs/fixtures/stat
new file mode 100644
index 000000000..dabb96f74
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/stat
@@ -0,0 +1,16 @@
+cpu  301854 612 111922 8979004 3552 2 3944 0 0 0
+cpu0 44490 19 21045 1087069 220 1 3410 0 0 0
+cpu1 47869 23 16474 1110787 591 0 46 0 0 0
+cpu2 46504 36 15916 1112321 441 0 326 0 0 0
+cpu3 47054 102 15683 1113230 533 0 60 0 0 0
+cpu4 28413 25 10776 1140321 217 0 8 0 0 0
+cpu5 29271 101 11586 1136270 672 0 30 0 0 0
+cpu6 29152 36 10276 1139721 319 0 29 0 0 0
+cpu7 29098 268 10164 1139282 555 0 31 0 0 0
+intr 8885917 17 0 0 0 0 0 0 0 1 79281 0 0 0 0 0 0 0 231237 0 0 0 0 250586 103 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 223424 190745 13 906 1283803 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+ctxt 38014093
+btime 1418183276
+processes 26442
+procs_running 2
+procs_blocked 0
+softirq 5057579 250191 1481983 1647 211099 186066 0 1783454 622196 12499 508444
diff --git a/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/README b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/README
new file mode 100644
index 000000000..5cf184ea0
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/README
@@ -0,0 +1,2 @@
+This directory contains some empty files that are the symlinks the files in the "fd" directory point to.
+They are otherwise ignored by the tests
diff --git a/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/abc b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/abc
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/abc
diff --git a/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/def b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/def
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/def
diff --git a/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/ghi b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/ghi
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/ghi
diff --git a/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/uvw b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/uvw
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/uvw
diff --git a/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/xyz b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/xyz
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures/symlinktargets/xyz
diff --git a/vendor/github.com/prometheus/procfs/fs.go b/vendor/github.com/prometheus/procfs/fs.go
new file mode 100644
index 000000000..49aaab050
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fs.go
@@ -0,0 +1,33 @@
+package procfs
+
+import (
+	"fmt"
+	"os"
+	"path"
+)
+
+// FS represents the pseudo-filesystem proc, which provides an interface to
+// kernel data structures.
+type FS string
+
+// DefaultMountPoint is the common mount point of the proc filesystem.
+const DefaultMountPoint = "/proc"
+
+// NewFS returns a new FS mounted under the given mountPoint. It will error
+// if the mount point can't be read.
+func NewFS(mountPoint string) (FS, error) {
+	info, err := os.Stat(mountPoint)
+	if err != nil {
+		return "", fmt.Errorf("could not read %s: %s", mountPoint, err)
+	}
+	if !info.IsDir() {
+		return "", fmt.Errorf("mount point %s is not a directory", mountPoint)
+	}
+
+	return FS(mountPoint), nil
+}
+
+// Path returns the path of the given subsystem relative to the procfs root.
+func (fs FS) Path(p ...string) string {
+	return path.Join(append([]string{string(fs)}, p...)...)
+}
diff --git a/vendor/github.com/prometheus/procfs/fs_test.go b/vendor/github.com/prometheus/procfs/fs_test.go
new file mode 100644
index 000000000..91f1c6c97
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fs_test.go
@@ -0,0 +1,13 @@
+package procfs
+
+import "testing"
+
+func TestNewFS(t *testing.T) {
+	if _, err := NewFS("foobar"); err == nil {
+		t.Error("want NewFS to fail for non-existing mount point")
+	}
+
+	if _, err := NewFS("procfs.go"); err == nil {
+		t.Error("want NewFS to fail if mount point is not a directory")
+	}
+}
diff --git a/vendor/github.com/prometheus/procfs/ipvs.go b/vendor/github.com/prometheus/procfs/ipvs.go
new file mode 100644
index 000000000..e7012f732
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/ipvs.go
@@ -0,0 +1,224 @@
+package procfs
+
+import (
+	"bufio"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net"
+	"os"
+	"strconv"
+	"strings"
+)
+
+// IPVSStats holds IPVS statistics, as exposed by the kernel in `/proc/net/ip_vs_stats`.
+type IPVSStats struct {
+	// Total count of connections.
+	Connections uint64
+	// Total incoming packages processed.
+	IncomingPackets uint64
+	// Total outgoing packages processed.
+	OutgoingPackets uint64
+	// Total incoming traffic.
+	IncomingBytes uint64
+	// Total outgoing traffic.
+	OutgoingBytes uint64
+}
+
+// IPVSBackendStatus holds current metrics of one virtual / real address pair.
+type IPVSBackendStatus struct {
+	// The local (virtual) IP address.
+	LocalAddress net.IP
+	// The local (virtual) port.
+	LocalPort uint16
+	// The transport protocol (TCP, UDP).
+	Proto string
+	// The remote (real) IP address.
+	RemoteAddress net.IP
+	// The remote (real) port.
+	RemotePort uint16
+	// The current number of active connections for this virtual/real address pair.
+	ActiveConn uint64
+	// The current number of inactive connections for this virtual/real address pair.
+	InactConn uint64
+	// The current weight of this virtual/real address pair.
+	Weight uint64
+}
+
+// NewIPVSStats reads the IPVS statistics.
+func NewIPVSStats() (IPVSStats, error) {
+	fs, err := NewFS(DefaultMountPoint)
+	if err != nil {
+		return IPVSStats{}, err
+	}
+
+	return fs.NewIPVSStats()
+}
+
+// NewIPVSStats reads the IPVS statistics from the specified `proc` filesystem.
+func (fs FS) NewIPVSStats() (IPVSStats, error) {
+	file, err := os.Open(fs.Path("net/ip_vs_stats"))
+	if err != nil {
+		return IPVSStats{}, err
+	}
+	defer file.Close()
+
+	return parseIPVSStats(file)
+}
+
+// parseIPVSStats performs the actual parsing of `ip_vs_stats`.
+func parseIPVSStats(file io.Reader) (IPVSStats, error) {
+	var (
+		statContent []byte
+		statLines   []string
+		statFields  []string
+		stats       IPVSStats
+	)
+
+	statContent, err := ioutil.ReadAll(file)
+	if err != nil {
+		return IPVSStats{}, err
+	}
+
+	statLines = strings.SplitN(string(statContent), "\n", 4)
+	if len(statLines) != 4 {
+		return IPVSStats{}, errors.New("ip_vs_stats corrupt: too short")
+	}
+
+	statFields = strings.Fields(statLines[2])
+	if len(statFields) != 5 {
+		return IPVSStats{}, errors.New("ip_vs_stats corrupt: unexpected number of fields")
+	}
+
+	stats.Connections, err = strconv.ParseUint(statFields[0], 16, 64)
+	if err != nil {
+		return IPVSStats{}, err
+	}
+	stats.IncomingPackets, err = strconv.ParseUint(statFields[1], 16, 64)
+	if err != nil {
+		return IPVSStats{}, err
+	}
+	stats.OutgoingPackets, err = strconv.ParseUint(statFields[2], 16, 64)
+	if err != nil {
+		return IPVSStats{}, err
+	}
+	stats.IncomingBytes, err = strconv.ParseUint(statFields[3], 16, 64)
+	if err != nil {
+		return IPVSStats{}, err
+	}
+	stats.OutgoingBytes, err = strconv.ParseUint(statFields[4], 16, 64)
+	if err != nil {
+		return IPVSStats{}, err
+	}
+
+	return stats, nil
+}
+
+// NewIPVSBackendStatus reads and returns the status of all (virtual,real) server pairs.
+func NewIPVSBackendStatus() ([]IPVSBackendStatus, error) {
+	fs, err := NewFS(DefaultMountPoint)
+	if err != nil {
+		return []IPVSBackendStatus{}, err
+	}
+
+	return fs.NewIPVSBackendStatus()
+}
+
+// NewIPVSBackendStatus reads and returns the status of all (virtual,real) server pairs from the specified `proc` filesystem.
+func (fs FS) NewIPVSBackendStatus() ([]IPVSBackendStatus, error) {
+	file, err := os.Open(fs.Path("net/ip_vs"))
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	return parseIPVSBackendStatus(file)
+}
+
+func parseIPVSBackendStatus(file io.Reader) ([]IPVSBackendStatus, error) {
+	var (
+		status       []IPVSBackendStatus
+		scanner      = bufio.NewScanner(file)
+		proto        string
+		localAddress net.IP
+		localPort    uint16
+		err          error
+	)
+
+	for scanner.Scan() {
+		fields := strings.Fields(string(scanner.Text()))
+		if len(fields) == 0 {
+			continue
+		}
+		switch {
+		case fields[0] == "IP" || fields[0] == "Prot" || fields[1] == "RemoteAddress:Port":
+			continue
+		case fields[0] == "TCP" || fields[0] == "UDP":
+			if len(fields) < 2 {
+				continue
+			}
+			proto = fields[0]
+			localAddress, localPort, err = parseIPPort(fields[1])
+			if err != nil {
+				return nil, err
+			}
+		case fields[0] == "->":
+			if len(fields) < 6 {
+				continue
+			}
+			remoteAddress, remotePort, err := parseIPPort(fields[1])
+			if err != nil {
+				return nil, err
+			}
+			weight, err := strconv.ParseUint(fields[3], 10, 64)
+			if err != nil {
+				return nil, err
+			}
+			activeConn, err := strconv.ParseUint(fields[4], 10, 64)
+			if err != nil {
+				return nil, err
+			}
+			inactConn, err := strconv.ParseUint(fields[5], 10, 64)
+			if err != nil {
+				return nil, err
+			}
+			status = append(status, IPVSBackendStatus{
+				LocalAddress:  localAddress,
+				LocalPort:     localPort,
+				RemoteAddress: remoteAddress,
+				RemotePort:    remotePort,
+				Proto:         proto,
+				Weight:        weight,
+				ActiveConn:    activeConn,
+				InactConn:     inactConn,
+			})
+		}
+	}
+	return status, nil
+}
+
+func parseIPPort(s string) (net.IP, uint16, error) {
+	tmp := strings.SplitN(s, ":", 2)
+
+	if len(tmp) != 2 {
+		return nil, 0, fmt.Errorf("invalid IP:Port: %s", s)
+	}
+
+	if len(tmp[0]) != 8 && len(tmp[0]) != 32 {
+		return nil, 0, fmt.Errorf("invalid IP: %s", tmp[0])
+	}
+
+	ip, err := hex.DecodeString(tmp[0])
+	if err != nil {
+		return nil, 0, err
+	}
+
+	port, err := strconv.ParseUint(tmp[1], 16, 16)
+	if err != nil {
+		return nil, 0, err
+	}
+
+	return ip, uint16(port), nil
+}
diff --git a/vendor/github.com/prometheus/procfs/ipvs_test.go b/vendor/github.com/prometheus/procfs/ipvs_test.go
new file mode 100644
index 000000000..c836c23ac
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/ipvs_test.go
@@ -0,0 +1,190 @@
+package procfs
+
+import (
+	"net"
+	"testing"
+)
+
+var (
+	expectedIPVSStats = IPVSStats{
+		Connections:     23765872,
+		IncomingPackets: 3811989221,
+		OutgoingPackets: 0,
+		IncomingBytes:   89991519156915,
+		OutgoingBytes:   0,
+	}
+	expectedIPVSBackendStatuses = []IPVSBackendStatus{
+		IPVSBackendStatus{
+			LocalAddress:  net.ParseIP("192.168.0.22"),
+			LocalPort:     3306,
+			RemoteAddress: net.ParseIP("192.168.82.22"),
+			RemotePort:    3306,
+			Proto:         "TCP",
+			Weight:        100,
+			ActiveConn:    248,
+			InactConn:     2,
+		},
+		IPVSBackendStatus{
+			LocalAddress:  net.ParseIP("192.168.0.22"),
+			LocalPort:     3306,
+			RemoteAddress: net.ParseIP("192.168.83.24"),
+			RemotePort:    3306,
+			Proto:         "TCP",
+			Weight:        100,
+			ActiveConn:    248,
+			InactConn:     2,
+		},
+		IPVSBackendStatus{
+			LocalAddress:  net.ParseIP("192.168.0.22"),
+			LocalPort:     3306,
+			RemoteAddress: net.ParseIP("192.168.83.21"),
+			RemotePort:    3306,
+			Proto:         "TCP",
+			Weight:        100,
+			ActiveConn:    248,
+			InactConn:     1,
+		},
+		IPVSBackendStatus{
+			LocalAddress:  net.ParseIP("192.168.0.57"),
+			LocalPort:     3306,
+			RemoteAddress: net.ParseIP("192.168.84.22"),
+			RemotePort:    3306,
+			Proto:         "TCP",
+			Weight:        0,
+			ActiveConn:    0,
+			InactConn:     0,
+		},
+		IPVSBackendStatus{
+			LocalAddress:  net.ParseIP("192.168.0.57"),
+			LocalPort:     3306,
+			RemoteAddress: net.ParseIP("192.168.82.21"),
+			RemotePort:    3306,
+			Proto:         "TCP",
+			Weight:        100,
+			ActiveConn:    1499,
+			InactConn:     0,
+		},
+		IPVSBackendStatus{
+			LocalAddress:  net.ParseIP("192.168.0.57"),
+			LocalPort:     3306,
+			RemoteAddress: net.ParseIP("192.168.50.21"),
+			RemotePort:    3306,
+			Proto:         "TCP",
+			Weight:        100,
+			ActiveConn:    1498,
+			InactConn:     0,
+		},
+		IPVSBackendStatus{
+			LocalAddress:  net.ParseIP("192.168.0.55"),
+			LocalPort:     3306,
+			RemoteAddress: net.ParseIP("192.168.50.26"),
+			RemotePort:    3306,
+			Proto:         "TCP",
+			Weight:        0,
+			ActiveConn:    0,
+			InactConn:     0,
+		},
+		IPVSBackendStatus{
+			LocalAddress:  net.ParseIP("192.168.0.55"),
+			LocalPort:     3306,
+			RemoteAddress: net.ParseIP("192.168.49.32"),
+			RemotePort:    3306,
+			Proto:         "TCP",
+			Weight:        100,
+			ActiveConn:    0,
+			InactConn:     0,
+		},
+	}
+)
+
+func TestIPVSStats(t *testing.T) {
+	stats, err := FS("fixtures").NewIPVSStats()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if stats != expectedIPVSStats {
+		t.Errorf("want %+v, have %+v", expectedIPVSStats, stats)
+	}
+}
+
+func TestParseIPPort(t *testing.T) {
+	ip := net.ParseIP("192.168.0.22")
+	port := uint16(3306)
+
+	gotIP, gotPort, err := parseIPPort("C0A80016:0CEA")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !(gotIP.Equal(ip) && port == gotPort) {
+		t.Errorf("want %s:%d, have %s:%d", ip, port, gotIP, gotPort)
+	}
+}
+
+func TestParseIPPortInvalid(t *testing.T) {
+	testcases := []string{
+		"",
+		"C0A80016",
+		"C0A800:1234",
+		"FOOBARBA:1234",
+		"C0A80016:0CEA:1234",
+	}
+
+	for _, s := range testcases {
+		ip, port, err := parseIPPort(s)
+		if ip != nil || port != uint16(0) || err == nil {
+			t.Errorf("Expected error for input %s, have ip = %s, port = %v, err = %v", s, ip, port, err)
+		}
+	}
+}
+
+func TestParseIPPortIPv6(t *testing.T) {
+	ip := net.ParseIP("dead:beef::1")
+	port := uint16(8080)
+
+	gotIP, gotPort, err := parseIPPort("DEADBEEF000000000000000000000001:1F90")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !(gotIP.Equal(ip) && port == gotPort) {
+		t.Errorf("want %s:%d, have %s:%d", ip, port, gotIP, gotPort)
+	}
+
+}
+
+func TestIPVSBackendStatus(t *testing.T) {
+	backendStats, err := FS("fixtures").NewIPVSBackendStatus()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if want, have := len(expectedIPVSBackendStatuses), len(backendStats); want != have {
+		t.Fatalf("want %d backend statuses, have %d", want, have)
+	}
+
+	for idx, expect := range expectedIPVSBackendStatuses {
+		if !backendStats[idx].LocalAddress.Equal(expect.LocalAddress) {
+			t.Errorf("want LocalAddress %s, have %s", expect.LocalAddress, backendStats[idx].LocalAddress)
+		}
+		if backendStats[idx].LocalPort != expect.LocalPort {
+			t.Errorf("want LocalPort %d, have %d", expect.LocalPort, backendStats[idx].LocalPort)
+		}
+		if !backendStats[idx].RemoteAddress.Equal(expect.RemoteAddress) {
+			t.Errorf("want RemoteAddress %s, have %s", expect.RemoteAddress, backendStats[idx].RemoteAddress)
+		}
+		if backendStats[idx].RemotePort != expect.RemotePort {
+			t.Errorf("want RemotePort %d, have %d", expect.RemotePort, backendStats[idx].RemotePort)
+		}
+		if backendStats[idx].Proto != expect.Proto {
+			t.Errorf("want Proto %s, have %s", expect.Proto, backendStats[idx].Proto)
+		}
+		if backendStats[idx].Weight != expect.Weight {
+			t.Errorf("want Weight %d, have %d", expect.Weight, backendStats[idx].Weight)
+		}
+		if backendStats[idx].ActiveConn != expect.ActiveConn {
+			t.Errorf("want ActiveConn %d, have %d", expect.ActiveConn, backendStats[idx].ActiveConn)
+		}
+		if backendStats[idx].InactConn != expect.InactConn {
+			t.Errorf("want InactConn %d, have %d", expect.InactConn, backendStats[idx].InactConn)
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/procfs/mdstat.go b/vendor/github.com/prometheus/procfs/mdstat.go
new file mode 100644
index 000000000..d7a248c0d
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/mdstat.go
@@ -0,0 +1,138 @@
+package procfs
+
+import (
+	"fmt"
+	"io/ioutil"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+var (
+	statuslineRE = regexp.MustCompile(`(\d+) blocks .*\[(\d+)/(\d+)\] \[[U_]+\]`)
+	buildlineRE  = regexp.MustCompile(`\((\d+)/\d+\)`)
+)
+
+// MDStat holds info parsed from /proc/mdstat.
+type MDStat struct {
+	// Name of the device.
+	Name string
+	// activity-state of the device.
+	ActivityState string
+	// Number of active disks.
+	DisksActive int64
+	// Total number of disks the device consists of.
+	DisksTotal int64
+	// Number of blocks the device holds.
+	BlocksTotal int64
+	// Number of blocks on the device that are in sync.
+	BlocksSynced int64
+}
+
+// ParseMDStat parses an mdstat-file and returns a struct with the relevant infos.
+func (fs FS) ParseMDStat() (mdstates []MDStat, err error) {
+	mdStatusFilePath := fs.Path("mdstat")
+	content, err := ioutil.ReadFile(mdStatusFilePath)
+	if err != nil {
+		return []MDStat{}, fmt.Errorf("error parsing %s: %s", mdStatusFilePath, err)
+	}
+
+	mdStates := []MDStat{}
+	lines := strings.Split(string(content), "\n")
+	for i, l := range lines {
+		if l == "" {
+			continue
+		}
+		if l[0] == ' ' {
+			continue
+		}
+		if strings.HasPrefix(l, "Personalities") || strings.HasPrefix(l, "unused") {
+			continue
+		}
+
+		mainLine := strings.Split(l, " ")
+		if len(mainLine) < 3 {
+			return mdStates, fmt.Errorf("error parsing mdline: %s", l)
+		}
+		mdName := mainLine[0]
+		activityState := mainLine[2]
+
+		if len(lines) <= i+3 {
+			return mdStates, fmt.Errorf(
+				"error parsing %s: too few lines for md device %s",
+				mdStatusFilePath,
+				mdName,
+			)
+		}
+
+		active, total, size, err := evalStatusline(lines[i+1])
+		if err != nil {
+			return mdStates, fmt.Errorf("error parsing %s: %s", mdStatusFilePath, err)
+		}
+
+		// j is the line number of the syncing-line.
+		j := i + 2
+		if strings.Contains(lines[i+2], "bitmap") { // skip bitmap line
+			j = i + 3
+		}
+
+		// If device is syncing at the moment, get the number of currently
+		// synced bytes, otherwise that number equals the size of the device.
+		syncedBlocks := size
+		if strings.Contains(lines[j], "recovery") || strings.Contains(lines[j], "resync") {
+			syncedBlocks, err = evalBuildline(lines[j])
+			if err != nil {
+				return mdStates, fmt.Errorf("error parsing %s: %s", mdStatusFilePath, err)
+			}
+		}
+
+		mdStates = append(mdStates, MDStat{
+			Name:          mdName,
+			ActivityState: activityState,
+			DisksActive:   active,
+			DisksTotal:    total,
+			BlocksTotal:   size,
+			BlocksSynced:  syncedBlocks,
+		})
+	}
+
+	return mdStates, nil
+}
+
+func evalStatusline(statusline string) (active, total, size int64, err error) {
+	matches := statuslineRE.FindStringSubmatch(statusline)
+	if len(matches) != 4 {
+		return 0, 0, 0, fmt.Errorf("unexpected statusline: %s", statusline)
+	}
+
+	size, err = strconv.ParseInt(matches[1], 10, 64)
+	if err != nil {
+		return 0, 0, 0, fmt.Errorf("unexpected statusline %s: %s", statusline, err)
+	}
+
+	total, err = strconv.ParseInt(matches[2], 10, 64)
+	if err != nil {
+		return 0, 0, 0, fmt.Errorf("unexpected statusline %s: %s", statusline, err)
+	}
+
+	active, err = strconv.ParseInt(matches[3], 10, 64)
+	if err != nil {
+		return 0, 0, 0, fmt.Errorf("unexpected statusline %s: %s", statusline, err)
+	}
+
+	return active, total, size, nil
+}
+
+func evalBuildline(buildline string) (syncedBlocks int64, err error) {
+	matches := buildlineRE.FindStringSubmatch(buildline)
+	if len(matches) != 2 {
+		return 0, fmt.Errorf("unexpected buildline: %s", buildline)
+	}
+
+	syncedBlocks, err = strconv.ParseInt(matches[1], 10, 64)
+	if err != nil {
+		return 0, fmt.Errorf("%s in buildline: %s", err, buildline)
+	}
+
+	return syncedBlocks, nil
+}
diff --git a/vendor/github.com/prometheus/procfs/mdstat_test.go b/vendor/github.com/prometheus/procfs/mdstat_test.go
new file mode 100644
index 000000000..ca5fe4d1b
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/mdstat_test.go
@@ -0,0 +1,31 @@
+package procfs
+
+import (
+	"testing"
+)
+
+func TestMDStat(t *testing.T) {
+	mdStates, err := FS("fixtures").ParseMDStat()
+	if err != nil {
+		t.Fatalf("parsing of reference-file failed entirely: %s", err)
+	}
+
+	refs := map[string]MDStat{
+		"md3":   MDStat{"md3", "active", 8, 8, 5853468288, 5853468288},
+		"md127": MDStat{"md127", "active", 2, 2, 312319552, 312319552},
+		"md0":   MDStat{"md0", "active", 2, 2, 248896, 248896},
+		"md4":   MDStat{"md4", "inactive", 2, 2, 4883648, 4883648},
+		"md6":   MDStat{"md6", "active", 1, 2, 195310144, 16775552},
+		"md8":   MDStat{"md8", "active", 2, 2, 195310144, 16775552},
+		"md7":   MDStat{"md7", "active", 3, 4, 7813735424, 7813735424},
+	}
+
+	if want, have := len(refs), len(mdStates); want != have {
+		t.Errorf("want %d parsed md-devices, have %d", want, have)
+	}
+	for _, md := range mdStates {
+		if want, have := refs[md.Name], md; want != have {
+			t.Errorf("%s: want %v, have %v", md.Name, want, have)
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/procfs/proc.go b/vendor/github.com/prometheus/procfs/proc.go
new file mode 100644
index 000000000..0d0a6a90f
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc.go
@@ -0,0 +1,212 @@
+package procfs
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"strconv"
+	"strings"
+)
+
+// Proc provides information about a running process.
+type Proc struct {
+	// The process ID.
+	PID int
+
+	fs FS
+}
+
+// Procs represents a list of Proc structs.
+type Procs []Proc
+
+func (p Procs) Len() int           { return len(p) }
+func (p Procs) Swap(i, j int)      { p[i], p[j] = p[j], p[i] }
+func (p Procs) Less(i, j int) bool { return p[i].PID < p[j].PID }
+
+// Self returns a process for the current process read via /proc/self.
+func Self() (Proc, error) {
+	fs, err := NewFS(DefaultMountPoint)
+	if err != nil {
+		return Proc{}, err
+	}
+	return fs.Self()
+}
+
+// NewProc returns a process for the given pid under /proc.
+func NewProc(pid int) (Proc, error) {
+	fs, err := NewFS(DefaultMountPoint)
+	if err != nil {
+		return Proc{}, err
+	}
+	return fs.NewProc(pid)
+}
+
+// AllProcs returns a list of all currently available processes under /proc.
+func AllProcs() (Procs, error) {
+	fs, err := NewFS(DefaultMountPoint)
+	if err != nil {
+		return Procs{}, err
+	}
+	return fs.AllProcs()
+}
+
+// Self returns a process for the current process.
+func (fs FS) Self() (Proc, error) {
+	p, err := os.Readlink(fs.Path("self"))
+	if err != nil {
+		return Proc{}, err
+	}
+	pid, err := strconv.Atoi(strings.Replace(p, string(fs), "", -1))
+	if err != nil {
+		return Proc{}, err
+	}
+	return fs.NewProc(pid)
+}
+
+// NewProc returns a process for the given pid.
+func (fs FS) NewProc(pid int) (Proc, error) {
+	if _, err := os.Stat(fs.Path(strconv.Itoa(pid))); err != nil {
+		return Proc{}, err
+	}
+	return Proc{PID: pid, fs: fs}, nil
+}
+
+// AllProcs returns a list of all currently available processes.
+func (fs FS) AllProcs() (Procs, error) {
+	d, err := os.Open(fs.Path())
+	if err != nil {
+		return Procs{}, err
+	}
+	defer d.Close()
+
+	names, err := d.Readdirnames(-1)
+	if err != nil {
+		return Procs{}, fmt.Errorf("could not read %s: %s", d.Name(), err)
+	}
+
+	p := Procs{}
+	for _, n := range names {
+		pid, err := strconv.ParseInt(n, 10, 64)
+		if err != nil {
+			continue
+		}
+		p = append(p, Proc{PID: int(pid), fs: fs})
+	}
+
+	return p, nil
+}
+
+// CmdLine returns the command line of a process.
+func (p Proc) CmdLine() ([]string, error) {
+	f, err := os.Open(p.path("cmdline"))
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	data, err := ioutil.ReadAll(f)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(data) < 1 {
+		return []string{}, nil
+	}
+
+	return strings.Split(string(data[:len(data)-1]), string(byte(0))), nil
+}
+
+// Comm returns the command name of a process.
+func (p Proc) Comm() (string, error) {
+	f, err := os.Open(p.path("comm"))
+	if err != nil {
+		return "", err
+	}
+	defer f.Close()
+
+	data, err := ioutil.ReadAll(f)
+	if err != nil {
+		return "", err
+	}
+
+	return strings.TrimSpace(string(data)), nil
+}
+
+// Executable returns the absolute path of the executable command of a process.
+func (p Proc) Executable() (string, error) {
+	exe, err := os.Readlink(p.path("exe"))
+	if os.IsNotExist(err) {
+		return "", nil
+	}
+
+	return exe, err
+}
+
+// FileDescriptors returns the currently open file descriptors of a process.
+func (p Proc) FileDescriptors() ([]uintptr, error) {
+	names, err := p.fileDescriptors()
+	if err != nil {
+		return nil, err
+	}
+
+	fds := make([]uintptr, len(names))
+	for i, n := range names {
+		fd, err := strconv.ParseInt(n, 10, 32)
+		if err != nil {
+			return nil, fmt.Errorf("could not parse fd %s: %s", n, err)
+		}
+		fds[i] = uintptr(fd)
+	}
+
+	return fds, nil
+}
+
+// FileDescriptorTargets returns the targets of all file descriptors of a process.
+// If a file descriptor is not a symlink to a file (like a socket), that value will be the empty string.
+func (p Proc) FileDescriptorTargets() ([]string, error) {
+	names, err := p.fileDescriptors()
+	if err != nil {
+		return nil, err
+	}
+
+	targets := make([]string, len(names))
+
+	for i, name := range names {
+		target, err := os.Readlink(p.path("fd", name))
+		if err == nil {
+			targets[i] = target
+		}
+	}
+
+	return targets, nil
+}
+
+// FileDescriptorsLen returns the number of currently open file descriptors of
+// a process.
+func (p Proc) FileDescriptorsLen() (int, error) {
+	fds, err := p.fileDescriptors()
+	if err != nil {
+		return 0, err
+	}
+
+	return len(fds), nil
+}
+
+func (p Proc) fileDescriptors() ([]string, error) {
+	d, err := os.Open(p.path("fd"))
+	if err != nil {
+		return nil, err
+	}
+	defer d.Close()
+
+	names, err := d.Readdirnames(-1)
+	if err != nil {
+		return nil, fmt.Errorf("could not read %s: %s", d.Name(), err)
+	}
+
+	return names, nil
+}
+
+func (p Proc) path(pa ...string) string {
+	return p.fs.Path(append([]string{strconv.Itoa(p.PID)}, pa...)...)
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_io.go b/vendor/github.com/prometheus/procfs/proc_io.go
new file mode 100644
index 000000000..b4e31d7ba
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_io.go
@@ -0,0 +1,55 @@
+package procfs
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+)
+
+// ProcIO models the content of /proc/<pid>/io.
+type ProcIO struct {
+	// Chars read.
+	RChar uint64
+	// Chars written.
+	WChar uint64
+	// Read syscalls.
+	SyscR uint64
+	// Write syscalls.
+	SyscW uint64
+	// Bytes read.
+	ReadBytes uint64
+	// Bytes written.
+	WriteBytes uint64
+	// Bytes written, but taking into account truncation. See
+	// Documentation/filesystems/proc.txt in the kernel sources for
+	// detailed explanation.
+	CancelledWriteBytes int64
+}
+
+// NewIO creates a new ProcIO instance from a given Proc instance.
+func (p Proc) NewIO() (ProcIO, error) {
+	pio := ProcIO{}
+
+	f, err := os.Open(p.path("io"))
+	if err != nil {
+		return pio, err
+	}
+	defer f.Close()
+
+	data, err := ioutil.ReadAll(f)
+	if err != nil {
+		return pio, err
+	}
+
+	ioFormat := "rchar: %d\nwchar: %d\nsyscr: %d\nsyscw: %d\n" +
+		"read_bytes: %d\nwrite_bytes: %d\n" +
+		"cancelled_write_bytes: %d\n"
+
+	_, err = fmt.Sscanf(string(data), ioFormat, &pio.RChar, &pio.WChar, &pio.SyscR,
+		&pio.SyscW, &pio.ReadBytes, &pio.WriteBytes, &pio.CancelledWriteBytes)
+	if err != nil {
+		return pio, err
+	}
+
+	return pio, nil
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_io_test.go b/vendor/github.com/prometheus/procfs/proc_io_test.go
new file mode 100644
index 000000000..3aa1a1293
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_io_test.go
@@ -0,0 +1,33 @@
+package procfs
+
+import "testing"
+
+func TestProcIO(t *testing.T) {
+	p, err := FS("fixtures").NewProc(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	s, err := p.NewIO()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, test := range []struct {
+		name string
+		want int64
+		have int64
+	}{
+		{name: "RChar", want: 750339, have: int64(s.RChar)},
+		{name: "WChar", want: 818609, have: int64(s.WChar)},
+		{name: "SyscR", want: 7405, have: int64(s.SyscR)},
+		{name: "SyscW", want: 5245, have: int64(s.SyscW)},
+		{name: "ReadBytes", want: 1024, have: int64(s.ReadBytes)},
+		{name: "WriteBytes", want: 2048, have: int64(s.WriteBytes)},
+		{name: "CancelledWriteBytes", want: -1024, have: s.CancelledWriteBytes},
+	} {
+		if test.want != test.have {
+			t.Errorf("want %s %d, have %d", test.name, test.want, test.have)
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_limits.go b/vendor/github.com/prometheus/procfs/proc_limits.go
new file mode 100644
index 000000000..2df997ce1
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_limits.go
@@ -0,0 +1,137 @@
+package procfs
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"regexp"
+	"strconv"
+)
+
+// ProcLimits represents the soft limits for each of the process's resource
+// limits. For more information see getrlimit(2):
+// http://man7.org/linux/man-pages/man2/getrlimit.2.html.
+type ProcLimits struct {
+	// CPU time limit in seconds.
+	CPUTime int
+	// Maximum size of files that the process may create.
+	FileSize int
+	// Maximum size of the process's data segment (initialized data,
+	// uninitialized data, and heap).
+	DataSize int
+	// Maximum size of the process stack in bytes.
+	StackSize int
+	// Maximum size of a core file.
+	CoreFileSize int
+	// Limit of the process's resident set in pages.
+	ResidentSet int
+	// Maximum number of processes that can be created for the real user ID of
+	// the calling process.
+	Processes int
+	// Value one greater than the maximum file descriptor number that can be
+	// opened by this process.
+	OpenFiles int
+	// Maximum number of bytes of memory that may be locked into RAM.
+	LockedMemory int
+	// Maximum size of the process's virtual memory address space in bytes.
+	AddressSpace int
+	// Limit on the combined number of flock(2) locks and fcntl(2) leases that
+	// this process may establish.
+	FileLocks int
+	// Limit of signals that may be queued for the real user ID of the calling
+	// process.
+	PendingSignals int
+	// Limit on the number of bytes that can be allocated for POSIX message
+	// queues for the real user ID of the calling process.
+	MsqqueueSize int
+	// Limit of the nice priority set using setpriority(2) or nice(2).
+	NicePriority int
+	// Limit of the real-time priority set using sched_setscheduler(2) or
+	// sched_setparam(2).
+	RealtimePriority int
+	// Limit (in microseconds) on the amount of CPU time that a process
+	// scheduled under a real-time scheduling policy may consume without making
+	// a blocking system call.
+	RealtimeTimeout int
+}
+
+const (
+	limitsFields    = 3
+	limitsUnlimited = "unlimited"
+)
+
+var (
+	limitsDelimiter = regexp.MustCompile("  +")
+)
+
+// NewLimits returns the current soft limits of the process.
+func (p Proc) NewLimits() (ProcLimits, error) {
+	f, err := os.Open(p.path("limits"))
+	if err != nil {
+		return ProcLimits{}, err
+	}
+	defer f.Close()
+
+	var (
+		l = ProcLimits{}
+		s = bufio.NewScanner(f)
+	)
+	for s.Scan() {
+		fields := limitsDelimiter.Split(s.Text(), limitsFields)
+		if len(fields) != limitsFields {
+			return ProcLimits{}, fmt.Errorf(
+				"couldn't parse %s line %s", f.Name(), s.Text())
+		}
+
+		switch fields[0] {
+		case "Max cpu time":
+			l.CPUTime, err = parseInt(fields[1])
+		case "Max file size":
+			l.FileSize, err = parseInt(fields[1])
+		case "Max data size":
+			l.DataSize, err = parseInt(fields[1])
+		case "Max stack size":
+			l.StackSize, err = parseInt(fields[1])
+		case "Max core file size":
+			l.CoreFileSize, err = parseInt(fields[1])
+		case "Max resident set":
+			l.ResidentSet, err = parseInt(fields[1])
+		case "Max processes":
+			l.Processes, err = parseInt(fields[1])
+		case "Max open files":
+			l.OpenFiles, err = parseInt(fields[1])
+		case "Max locked memory":
+			l.LockedMemory, err = parseInt(fields[1])
+		case "Max address space":
+			l.AddressSpace, err = parseInt(fields[1])
+		case "Max file locks":
+			l.FileLocks, err = parseInt(fields[1])
+		case "Max pending signals":
+			l.PendingSignals, err = parseInt(fields[1])
+		case "Max msgqueue size":
+			l.MsqqueueSize, err = parseInt(fields[1])
+		case "Max nice priority":
+			l.NicePriority, err = parseInt(fields[1])
+		case "Max realtime priority":
+			l.RealtimePriority, err = parseInt(fields[1])
+		case "Max realtime timeout":
+			l.RealtimeTimeout, err = parseInt(fields[1])
+		}
+		if err != nil {
+			return ProcLimits{}, err
+		}
+	}
+
+	return l, s.Err()
+}
+
+func parseInt(s string) (int, error) {
+	if s == limitsUnlimited {
+		return -1, nil
+	}
+	i, err := strconv.ParseInt(s, 10, 32)
+	if err != nil {
+		return 0, fmt.Errorf("couldn't parse value %s: %s", s, err)
+	}
+	return int(i), nil
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_limits_test.go b/vendor/github.com/prometheus/procfs/proc_limits_test.go
new file mode 100644
index 000000000..70bf04ec2
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_limits_test.go
@@ -0,0 +1,31 @@
+package procfs
+
+import "testing"
+
+func TestNewLimits(t *testing.T) {
+	p, err := FS("fixtures").NewProc(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	l, err := p.NewLimits()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, test := range []struct {
+		name string
+		want int
+		have int
+	}{
+		{name: "cpu time", want: -1, have: l.CPUTime},
+		{name: "open files", want: 2048, have: l.OpenFiles},
+		{name: "msgqueue size", want: 819200, have: l.MsqqueueSize},
+		{name: "nice priority", want: 0, have: l.NicePriority},
+		{name: "address space", want: -1, have: l.AddressSpace},
+	} {
+		if test.want != test.have {
+			t.Errorf("want %s %d, have %d", test.name, test.want, test.have)
+		}
+	}
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_stat.go b/vendor/github.com/prometheus/procfs/proc_stat.go
new file mode 100644
index 000000000..724e271b9
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_stat.go
@@ -0,0 +1,175 @@
+package procfs
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"os"
+)
+
+// Originally, this USER_HZ value was dynamically retrieved via a sysconf call
+// which required cgo. However, that caused a lot of problems regarding
+// cross-compilation. Alternatives such as running a binary to determine the
+// value, or trying to derive it in some other way were all problematic.  After
+// much research it was determined that USER_HZ is actually hardcoded to 100 on
+// all Go-supported platforms as of the time of this writing. This is why we
+// decided to hardcode it here as well. It is not impossible that there could
+// be systems with exceptions, but they should be very exotic edge cases, and
+// in that case, the worst outcome will be two misreported metrics.
+//
+// See also the following discussions:
+//
+// - https://github.com/prometheus/node_exporter/issues/52
+// - https://github.com/prometheus/procfs/pull/2
+// - http://stackoverflow.com/questions/17410841/how-does-user-hz-solve-the-jiffy-scaling-issue
+const userHZ = 100
+
+// ProcStat provides status information about the process,
+// read from /proc/[pid]/stat.
+type ProcStat struct {
+	// The process ID.
+	PID int
+	// The filename of the executable.
+	Comm string
+	// The process state.
+	State string
+	// The PID of the parent of this process.
+	PPID int
+	// The process group ID of the process.
+	PGRP int
+	// The session ID of the process.
+	Session int
+	// The controlling terminal of the process.
+	TTY int
+	// The ID of the foreground process group of the controlling terminal of
+	// the process.
+	TPGID int
+	// The kernel flags word of the process.
+	Flags uint
+	// The number of minor faults the process has made which have not required
+	// loading a memory page from disk.
+	MinFlt uint
+	// The number of minor faults that the process's waited-for children have
+	// made.
+	CMinFlt uint
+	// The number of major faults the process has made which have required
+	// loading a memory page from disk.
+	MajFlt uint
+	// The number of major faults that the process's waited-for children have
+	// made.
+	CMajFlt uint
+	// Amount of time that this process has been scheduled in user mode,
+	// measured in clock ticks.
+	UTime uint
+	// Amount of time that this process has been scheduled in kernel mode,
+	// measured in clock ticks.
+	STime uint
+	// Amount of time that this process's waited-for children have been
+	// scheduled in user mode, measured in clock ticks.
+	CUTime uint
+	// Amount of time that this process's waited-for children have been
+	// scheduled in kernel mode, measured in clock ticks.
+	CSTime uint
+	// For processes running a real-time scheduling policy, this is the negated
+	// scheduling priority, minus one.
+	Priority int
+	// The nice value, a value in the range 19 (low priority) to -20 (high
+	// priority).
+	Nice int
+	// Number of threads in this process.
+	NumThreads int
+	// The time the process started after system boot, the value is expressed
+	// in clock ticks.
+	Starttime uint64
+	// Virtual memory size in bytes.
+	VSize int
+	// Resident set size in pages.
+	RSS int
+
+	fs FS
+}
+
+// NewStat returns the current status information of the process.
+func (p Proc) NewStat() (ProcStat, error) {
+	f, err := os.Open(p.path("stat"))
+	if err != nil {
+		return ProcStat{}, err
+	}
+	defer f.Close()
+
+	data, err := ioutil.ReadAll(f)
+	if err != nil {
+		return ProcStat{}, err
+	}
+
+	var (
+		ignore int
+
+		s = ProcStat{PID: p.PID, fs: p.fs}
+		l = bytes.Index(data, []byte("("))
+		r = bytes.LastIndex(data, []byte(")"))
+	)
+
+	if l < 0 || r < 0 {
+		return ProcStat{}, fmt.Errorf(
+			"unexpected format, couldn't extract comm: %s",
+			data,
+		)
+	}
+
+	s.Comm = string(data[l+1 : r])
+	_, err = fmt.Fscan(
+		bytes.NewBuffer(data[r+2:]),
+		&s.State,
+		&s.PPID,
+		&s.PGRP,
+		&s.Session,
+		&s.TTY,
+		&s.TPGID,
+		&s.Flags,
+		&s.MinFlt,
+		&s.CMinFlt,
+		&s.MajFlt,
+		&s.CMajFlt,
+		&s.UTime,
+		&s.STime,
+		&s.CUTime,
+		&s.CSTime,
+		&s.Priority,
+		&s.Nice,
+		&s.NumThreads,
+		&ignore,
+		&s.Starttime,
+		&s.VSize,
+		&s.RSS,
+	)
+	if err != nil {
+		return ProcStat{}, err
+	}
+
+	return s, nil
+}
+
+// VirtualMemory returns the virtual memory size in bytes.
+func (s ProcStat) VirtualMemory() int {
+	return s.VSize
+}
+
+// ResidentMemory returns the resident memory size in bytes.
+func (s ProcStat) ResidentMemory() int {
+	return s.RSS * os.Getpagesize()
+}
+
+// StartTime returns the unix timestamp of the process in seconds.
+func (s ProcStat) StartTime() (float64, error) {
+	stat, err := s.fs.NewStat()
+	if err != nil {
+		return 0, err
+	}
+	return float64(stat.BootTime) + (float64(s.Starttime) / userHZ), nil
+}
+
+// CPUTime returns the total CPU user and system time in seconds.
+func (s ProcStat) CPUTime() float64 {
+	return float64(s.UTime+s.STime) / userHZ
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_stat_test.go b/vendor/github.com/prometheus/procfs/proc_stat_test.go
new file mode 100644
index 000000000..a2ebcde78
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_stat_test.go
@@ -0,0 +1,110 @@
+package procfs
+
+import (
+	"os"
+	"testing"
+)
+
+func TestProcStat(t *testing.T) {
+	p, err := FS("fixtures").NewProc(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	s, err := p.NewStat()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, test := range []struct {
+		name string
+		want int
+		have int
+	}{
+		{name: "pid", want: 26231, have: s.PID},
+		{name: "user time", want: 1677, have: int(s.UTime)},
+		{name: "system time", want: 44, have: int(s.STime)},
+		{name: "start time", want: 82375, have: int(s.Starttime)},
+		{name: "virtual memory size", want: 56274944, have: s.VSize},
+		{name: "resident set size", want: 1981, have: s.RSS},
+	} {
+		if test.want != test.have {
+			t.Errorf("want %s %d, have %d", test.name, test.want, test.have)
+		}
+	}
+}
+
+func TestProcStatComm(t *testing.T) {
+	s1, err := testProcStat(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if want, have := "vim", s1.Comm; want != have {
+		t.Errorf("want comm %s, have %s", want, have)
+	}
+
+	s2, err := testProcStat(584)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if want, have := "(a b ) ( c d) ", s2.Comm; want != have {
+		t.Errorf("want comm %s, have %s", want, have)
+	}
+}
+
+func TestProcStatVirtualMemory(t *testing.T) {
+	s, err := testProcStat(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if want, have := 56274944, s.VirtualMemory(); want != have {
+		t.Errorf("want virtual memory %d, have %d", want, have)
+	}
+}
+
+func TestProcStatResidentMemory(t *testing.T) {
+	s, err := testProcStat(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if want, have := 1981*os.Getpagesize(), s.ResidentMemory(); want != have {
+		t.Errorf("want resident memory %d, have %d", want, have)
+	}
+}
+
+func TestProcStatStartTime(t *testing.T) {
+	s, err := testProcStat(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	time, err := s.StartTime()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if want, have := 1418184099.75, time; want != have {
+		t.Errorf("want start time %f, have %f", want, have)
+	}
+}
+
+func TestProcStatCPUTime(t *testing.T) {
+	s, err := testProcStat(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if want, have := 17.21, s.CPUTime(); want != have {
+		t.Errorf("want cpu time %f, have %f", want, have)
+	}
+}
+
+func testProcStat(pid int) (ProcStat, error) {
+	p, err := FS("fixtures").NewProc(pid)
+	if err != nil {
+		return ProcStat{}, err
+	}
+
+	return p.NewStat()
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_test.go b/vendor/github.com/prometheus/procfs/proc_test.go
new file mode 100644
index 000000000..104b3245d
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_test.go
@@ -0,0 +1,160 @@
+package procfs
+
+import (
+	"reflect"
+	"sort"
+	"testing"
+)
+
+func TestSelf(t *testing.T) {
+	fs := FS("fixtures")
+
+	p1, err := fs.NewProc(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+	p2, err := fs.Self()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if !reflect.DeepEqual(p1, p2) {
+		t.Errorf("want process %v, have %v", p1, p2)
+	}
+}
+
+func TestAllProcs(t *testing.T) {
+	procs, err := FS("fixtures").AllProcs()
+	if err != nil {
+		t.Fatal(err)
+	}
+	sort.Sort(procs)
+	for i, p := range []*Proc{{PID: 584}, {PID: 26231}} {
+		if want, have := p.PID, procs[i].PID; want != have {
+			t.Errorf("want processes %d, have %d", want, have)
+		}
+	}
+}
+
+func TestCmdLine(t *testing.T) {
+	for _, tt := range []struct {
+		process int
+		want    []string
+	}{
+		{process: 26231, want: []string{"vim", "test.go", "+10"}},
+		{process: 26232, want: []string{}},
+	} {
+		p1, err := FS("fixtures").NewProc(tt.process)
+		if err != nil {
+			t.Fatal(err)
+		}
+		c1, err := p1.CmdLine()
+		if err != nil {
+			t.Fatal(err)
+		}
+		if !reflect.DeepEqual(tt.want, c1) {
+			t.Errorf("want cmdline %v, have %v", tt.want, c1)
+		}
+	}
+}
+
+func TestComm(t *testing.T) {
+	for _, tt := range []struct {
+		process int
+		want    string
+	}{
+		{process: 26231, want: "vim"},
+		{process: 26232, want: "ata_sff"},
+	} {
+		p1, err := FS("fixtures").NewProc(tt.process)
+		if err != nil {
+			t.Fatal(err)
+		}
+		c1, err := p1.Comm()
+		if err != nil {
+			t.Fatal(err)
+		}
+		if !reflect.DeepEqual(tt.want, c1) {
+			t.Errorf("want comm %v, have %v", tt.want, c1)
+		}
+	}
+}
+
+func TestExecutable(t *testing.T) {
+	for _, tt := range []struct {
+		process int
+		want    string
+	}{
+		{process: 26231, want: "/usr/bin/vim"},
+		{process: 26232, want: ""},
+	} {
+		p, err := FS("fixtures").NewProc(tt.process)
+		if err != nil {
+			t.Fatal(err)
+		}
+		exe, err := p.Executable()
+		if err != nil {
+			t.Fatal(err)
+		}
+		if !reflect.DeepEqual(tt.want, exe) {
+			t.Errorf("want absolute path to cmdline %v, have %v", tt.want, exe)
+		}
+	}
+}
+
+func TestFileDescriptors(t *testing.T) {
+	p1, err := FS("fixtures").NewProc(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+	fds, err := p1.FileDescriptors()
+	if err != nil {
+		t.Fatal(err)
+	}
+	sort.Sort(byUintptr(fds))
+	if want := []uintptr{0, 1, 2, 3, 10}; !reflect.DeepEqual(want, fds) {
+		t.Errorf("want fds %v, have %v", want, fds)
+	}
+}
+
+func TestFileDescriptorTargets(t *testing.T) {
+	p1, err := FS("fixtures").NewProc(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+	fds, err := p1.FileDescriptorTargets()
+	if err != nil {
+		t.Fatal(err)
+	}
+	sort.Strings(fds)
+	var want = []string{
+		"../../symlinktargets/abc",
+		"../../symlinktargets/def",
+		"../../symlinktargets/ghi",
+		"../../symlinktargets/uvw",
+		"../../symlinktargets/xyz",
+	}
+	if !reflect.DeepEqual(want, fds) {
+		t.Errorf("want fds %v, have %v", want, fds)
+	}
+}
+
+func TestFileDescriptorsLen(t *testing.T) {
+	p1, err := FS("fixtures").NewProc(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+	l, err := p1.FileDescriptorsLen()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if want, have := 5, l; want != have {
+		t.Errorf("want fds %d, have %d", want, have)
+	}
+}
+
+type byUintptr []uintptr
+
+func (a byUintptr) Len() int           { return len(a) }
+func (a byUintptr) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a byUintptr) Less(i, j int) bool { return a[i] < a[j] }
diff --git a/vendor/github.com/prometheus/procfs/stat.go b/vendor/github.com/prometheus/procfs/stat.go
new file mode 100644
index 000000000..1ca217e8c
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/stat.go
@@ -0,0 +1,56 @@
+package procfs
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+)
+
+// Stat represents kernel/system statistics.
+type Stat struct {
+	// Boot time in seconds since the Epoch.
+	BootTime int64
+}
+
+// NewStat returns kernel/system statistics read from /proc/stat.
+func NewStat() (Stat, error) {
+	fs, err := NewFS(DefaultMountPoint)
+	if err != nil {
+		return Stat{}, err
+	}
+
+	return fs.NewStat()
+}
+
+// NewStat returns an information about current kernel/system statistics.
+func (fs FS) NewStat() (Stat, error) {
+	f, err := os.Open(fs.Path("stat"))
+	if err != nil {
+		return Stat{}, err
+	}
+	defer f.Close()
+
+	s := bufio.NewScanner(f)
+	for s.Scan() {
+		line := s.Text()
+		if !strings.HasPrefix(line, "btime") {
+			continue
+		}
+		fields := strings.Fields(line)
+		if len(fields) != 2 {
+			return Stat{}, fmt.Errorf("couldn't parse %s line %s", f.Name(), line)
+		}
+		i, err := strconv.ParseInt(fields[1], 10, 32)
+		if err != nil {
+			return Stat{}, fmt.Errorf("couldn't parse %s: %s", fields[1], err)
+		}
+		return Stat{BootTime: i}, nil
+	}
+	if err := s.Err(); err != nil {
+		return Stat{}, fmt.Errorf("couldn't parse %s: %s", f.Name(), err)
+	}
+
+	return Stat{}, fmt.Errorf("couldn't parse %s, missing btime", f.Name())
+}
diff --git a/vendor/github.com/prometheus/procfs/stat_test.go b/vendor/github.com/prometheus/procfs/stat_test.go
new file mode 100644
index 000000000..6eb792478
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/stat_test.go
@@ -0,0 +1,14 @@
+package procfs
+
+import "testing"
+
+func TestStat(t *testing.T) {
+	s, err := FS("fixtures").NewStat()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if want, have := int64(1418183276), s.BootTime; want != have {
+		t.Errorf("want boot time %d, have %d", want, have)
+	}
+}
diff --git a/vendor/github.com/tylerb/graceful/graceful.go b/vendor/github.com/tylerb/graceful/graceful.go
index a5e2395e0..07c990489 100644
--- a/vendor/github.com/tylerb/graceful/graceful.go
+++ b/vendor/github.com/tylerb/graceful/graceful.go
@@ -6,9 +6,7 @@ import (
 	"net"
 	"net/http"
 	"os"
-	"os/signal"
 	"sync"
-	"syscall"
 	"time"
 )
 
@@ -299,7 +297,7 @@ func (srv *Server) Serve(listener net.Listener) error {
 	interrupt := srv.interruptChan()
 	// Set up the interrupt handler
 	if !srv.NoSignalHandling {
-		signal.Notify(interrupt, syscall.SIGINT, syscall.SIGTERM)
+		signalNotify(interrupt)
 	}
 	quitting := make(chan struct{})
 	go srv.handleInterrupt(interrupt, quitting, listener)
@@ -336,8 +334,7 @@ func (srv *Server) Stop(timeout time.Duration) {
 	defer srv.stopLock.Unlock()
 
 	srv.Timeout = timeout
-	interrupt := srv.interruptChan()
-	interrupt <- syscall.SIGINT
+	sendSignalInt(srv.interruptChan())
 }
 
 // StopChan gets the stop channel which will block until
diff --git a/vendor/github.com/tylerb/graceful/signal.go b/vendor/github.com/tylerb/graceful/signal.go
new file mode 100644
index 000000000..9550978fe
--- /dev/null
+++ b/vendor/github.com/tylerb/graceful/signal.go
@@ -0,0 +1,17 @@
+//+build !appengine
+
+package graceful
+
+import (
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+func signalNotify(interrupt chan<- os.Signal) {
+	signal.Notify(interrupt, syscall.SIGINT, syscall.SIGTERM)
+}
+
+func sendSignalInt(interrupt chan<- os.Signal) {
+	interrupt <- syscall.SIGINT
+}
diff --git a/vendor/github.com/tylerb/graceful/signal_appengine.go b/vendor/github.com/tylerb/graceful/signal_appengine.go
new file mode 100644
index 000000000..6b776f087
--- /dev/null
+++ b/vendor/github.com/tylerb/graceful/signal_appengine.go
@@ -0,0 +1,13 @@
+//+build appengine
+
+package graceful
+
+import "os"
+
+func signalNotify(interrupt chan<- os.Signal) {
+	// Does not notify in the case of AppEngine.
+}
+
+func sendSignalInt(interrupt chan<- os.Signal) {
+	// Does not send in the case of AppEngine.
+}
diff --git a/vendor/github.com/xenolf/lego/cli.go b/vendor/github.com/xenolf/lego/cli.go
index 9fac2dd59..61c08d455 100644
--- a/vendor/github.com/xenolf/lego/cli.go
+++ b/vendor/github.com/xenolf/lego/cli.go
@@ -201,7 +201,7 @@ Here is an example bash command using the CloudFlare DNS provider:
 	w := tabwriter.NewWriter(os.Stdout, 0, 8, 1, '\t', 0)
 	fmt.Fprintln(w, "Valid providers and their associated credential environment variables:")
 	fmt.Fprintln(w)
-	fmt.Fprintln(w, "\tazure:\tAZURE_CLIENT_ID, AZURE_CLIENT_SECRET, AZURE_SUBSCRIPTION_ID, AZURE_TENANT_ID, AZURE_RESROUCE_GROUP")
+	fmt.Fprintln(w, "\tazure:\tAZURE_CLIENT_ID, AZURE_CLIENT_SECRET, AZURE_SUBSCRIPTION_ID, AZURE_TENANT_ID, AZURE_RESOURCE_GROUP")
 	fmt.Fprintln(w, "\tauroradns:\tAURORA_USER_ID, AURORA_KEY, AURORA_ENDPOINT")
 	fmt.Fprintln(w, "\tcloudflare:\tCLOUDFLARE_EMAIL, CLOUDFLARE_API_KEY")
 	fmt.Fprintln(w, "\tdigitalocean:\tDO_AUTH_TOKEN")
diff --git a/vendor/github.com/xenolf/lego/cli_handlers.go b/vendor/github.com/xenolf/lego/cli_handlers.go
index 45e781246..858d71000 100644
--- a/vendor/github.com/xenolf/lego/cli_handlers.go
+++ b/vendor/github.com/xenolf/lego/cli_handlers.go
@@ -15,26 +15,7 @@ import (
 
 	"github.com/urfave/cli"
 	"github.com/xenolf/lego/acme"
-	"github.com/xenolf/lego/providers/dns/auroradns"
-	"github.com/xenolf/lego/providers/dns/azure"
-	"github.com/xenolf/lego/providers/dns/cloudflare"
-	"github.com/xenolf/lego/providers/dns/digitalocean"
-	"github.com/xenolf/lego/providers/dns/dnsimple"
-	"github.com/xenolf/lego/providers/dns/dnsmadeeasy"
-	"github.com/xenolf/lego/providers/dns/dnspod"
-	"github.com/xenolf/lego/providers/dns/dyn"
-	"github.com/xenolf/lego/providers/dns/exoscale"
-	"github.com/xenolf/lego/providers/dns/gandi"
-	"github.com/xenolf/lego/providers/dns/googlecloud"
-	"github.com/xenolf/lego/providers/dns/linode"
-	"github.com/xenolf/lego/providers/dns/namecheap"
-	"github.com/xenolf/lego/providers/dns/ns1"
-	"github.com/xenolf/lego/providers/dns/ovh"
-	"github.com/xenolf/lego/providers/dns/pdns"
-	"github.com/xenolf/lego/providers/dns/rackspace"
-	"github.com/xenolf/lego/providers/dns/rfc2136"
-	"github.com/xenolf/lego/providers/dns/route53"
-	"github.com/xenolf/lego/providers/dns/vultr"
+	"github.com/xenolf/lego/providers/dns"
 	"github.com/xenolf/lego/providers/http/memcached"
 	"github.com/xenolf/lego/providers/http/webroot"
 )
@@ -133,53 +114,7 @@ func setup(c *cli.Context) (*Configuration, *Account, *acme.Client) {
 	}
 
 	if c.GlobalIsSet("dns") {
-		var err error
-		var provider acme.ChallengeProvider
-		switch c.GlobalString("dns") {
-		case "azure":
-			provider, err = azure.NewDNSProvider()
-		case "auroradns":
-			provider, err = auroradns.NewDNSProvider()
-		case "cloudflare":
-			provider, err = cloudflare.NewDNSProvider()
-		case "digitalocean":
-			provider, err = digitalocean.NewDNSProvider()
-		case "dnsimple":
-			provider, err = dnsimple.NewDNSProvider()
-		case "dnsmadeeasy":
-			provider, err = dnsmadeeasy.NewDNSProvider()
-		case "exoscale":
-			provider, err = exoscale.NewDNSProvider()
-		case "dyn":
-			provider, err = dyn.NewDNSProvider()
-		case "gandi":
-			provider, err = gandi.NewDNSProvider()
-		case "gcloud":
-			provider, err = googlecloud.NewDNSProvider()
-		case "linode":
-			provider, err = linode.NewDNSProvider()
-		case "manual":
-			provider, err = acme.NewDNSProviderManual()
-		case "namecheap":
-			provider, err = namecheap.NewDNSProvider()
-		case "rackspace":
-			provider, err = rackspace.NewDNSProvider()
-		case "route53":
-			provider, err = route53.NewDNSProvider()
-		case "rfc2136":
-			provider, err = rfc2136.NewDNSProvider()
-		case "vultr":
-			provider, err = vultr.NewDNSProvider()
-		case "ovh":
-			provider, err = ovh.NewDNSProvider()
-		case "pdns":
-			provider, err = pdns.NewDNSProvider()
-		case "ns1":
-			provider, err = ns1.NewDNSProvider()
-		case "dnspod":
-			provider, err = dnspod.NewDNSProvider()
-		}
-
+    provider, err := dns.NewDNSChallengeProviderByName(c.GlobalString("dns"))
 		if err != nil {
 			logger().Fatal(err)
 		}
diff --git a/vendor/github.com/xenolf/lego/providers/dns/dns_providers.go b/vendor/github.com/xenolf/lego/providers/dns/dns_providers.go
new file mode 100644
index 000000000..33fca0fad
--- /dev/null
+++ b/vendor/github.com/xenolf/lego/providers/dns/dns_providers.go
@@ -0,0 +1,80 @@
+// Factory for DNS providers
+package dns
+
+import (
+	"fmt"
+
+	"github.com/xenolf/lego/acme"
+	"github.com/xenolf/lego/providers/dns/auroradns"
+	"github.com/xenolf/lego/providers/dns/azure"
+	"github.com/xenolf/lego/providers/dns/cloudflare"
+	"github.com/xenolf/lego/providers/dns/digitalocean"
+	"github.com/xenolf/lego/providers/dns/dnsimple"
+	"github.com/xenolf/lego/providers/dns/dnsmadeeasy"
+	"github.com/xenolf/lego/providers/dns/dnspod"
+	"github.com/xenolf/lego/providers/dns/dyn"
+	"github.com/xenolf/lego/providers/dns/exoscale"
+	"github.com/xenolf/lego/providers/dns/gandi"
+	"github.com/xenolf/lego/providers/dns/googlecloud"
+	"github.com/xenolf/lego/providers/dns/linode"
+	"github.com/xenolf/lego/providers/dns/namecheap"
+	"github.com/xenolf/lego/providers/dns/ns1"
+	"github.com/xenolf/lego/providers/dns/ovh"
+	"github.com/xenolf/lego/providers/dns/pdns"
+	"github.com/xenolf/lego/providers/dns/rackspace"
+	"github.com/xenolf/lego/providers/dns/rfc2136"
+	"github.com/xenolf/lego/providers/dns/route53"
+	"github.com/xenolf/lego/providers/dns/vultr"
+)
+
+func NewDNSChallengeProviderByName(name string) (acme.ChallengeProvider, error) {
+	var err error
+	var provider acme.ChallengeProvider
+	switch name {
+	case "azure":
+		provider, err = azure.NewDNSProvider()
+	case "auroradns":
+		provider, err = auroradns.NewDNSProvider()
+	case "cloudflare":
+		provider, err = cloudflare.NewDNSProvider()
+	case "digitalocean":
+		provider, err = digitalocean.NewDNSProvider()
+	case "dnsimple":
+		provider, err = dnsimple.NewDNSProvider()
+	case "dnsmadeeasy":
+		provider, err = dnsmadeeasy.NewDNSProvider()
+	case "dnspod":
+		provider, err = dnspod.NewDNSProvider()
+	case "dyn":
+		provider, err = dyn.NewDNSProvider()
+	case "exoscale":
+		provider, err = exoscale.NewDNSProvider()		
+	case "gandi":
+		provider, err = gandi.NewDNSProvider()
+	case "gcloud":
+		provider, err = googlecloud.NewDNSProvider()
+	case "linode":
+		provider, err = linode.NewDNSProvider()
+	case "manual":
+		provider, err = acme.NewDNSProviderManual()
+	case "namecheap":
+		provider, err = namecheap.NewDNSProvider()
+	case "rackspace":
+		provider, err = rackspace.NewDNSProvider()
+	case "route53":
+		provider, err = route53.NewDNSProvider()
+	case "rfc2136":
+		provider, err = rfc2136.NewDNSProvider()
+	case "vultr":
+		provider, err = vultr.NewDNSProvider()
+	case "ovh":
+		provider, err = ovh.NewDNSProvider()
+	case "pdns":
+		provider, err = pdns.NewDNSProvider()
+	case "ns1":
+		provider, err = ns1.NewDNSProvider()
+	default:
+		err = fmt.Errorf("Unrecognised DNS provider: %s", name)
+	}
+	return provider, err
+}
diff --git a/vendor/github.com/xenolf/lego/providers/dns/dns_providers_test.go b/vendor/github.com/xenolf/lego/providers/dns/dns_providers_test.go
new file mode 100644
index 000000000..3f87ffd33
--- /dev/null
+++ b/vendor/github.com/xenolf/lego/providers/dns/dns_providers_test.go
@@ -0,0 +1,50 @@
+package dns
+
+import (
+	"os"
+	"reflect"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/xenolf/lego/providers/dns/exoscale"
+)
+
+var (
+	apiKey    string
+	apiSecret string
+)
+
+func init() {
+	apiSecret = os.Getenv("EXOSCALE_API_SECRET")
+	apiKey = os.Getenv("EXOSCALE_API_KEY")
+}
+
+func restoreExoscaleEnv() {
+	os.Setenv("EXOSCALE_API_KEY", apiKey)
+	os.Setenv("EXOSCALE_API_SECRET", apiSecret)
+}
+
+func TestKnownDNSProviderSuccess(t *testing.T) {
+	os.Setenv("EXOSCALE_API_KEY", "abc")
+	os.Setenv("EXOSCALE_API_SECRET", "123")
+	provider, err := NewDNSChallengeProviderByName("exoscale")
+	assert.NoError(t, err)
+	assert.NotNil(t, provider)
+	if reflect.TypeOf(provider) != reflect.TypeOf(&exoscale.DNSProvider{}) {
+		t.Errorf("Not loaded correct DNS proviver: %v is not *exoscale.DNSProvider", reflect.TypeOf(provider))
+	}
+	restoreExoscaleEnv()
+}
+
+func TestKnownDNSProviderError(t *testing.T) {
+	os.Setenv("EXOSCALE_API_KEY", "")
+	os.Setenv("EXOSCALE_API_SECRET", "")
+	_, err := NewDNSChallengeProviderByName("exoscale")
+	assert.Error(t, err)
+	restoreExoscaleEnv()
+}
+
+func TestUnknownDNSProvider(t *testing.T) {
+	_, err := NewDNSChallengeProviderByName("foobar")
+	assert.Error(t, err)
+}