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

1 files changed, 58 insertions, 0 deletions

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())
+		}
+	}
+}