diff options
Diffstat (limited to 'vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client.go')
| -rw-r--r-- | vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client.go | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client.go deleted file mode 100644 index 1cf21f217..000000000 --- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client.go +++ /dev/null @@ -1,95 +0,0 @@ -// Copyright 2017 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 promhttp - -import ( - "net/http" - "time" - - "github.com/prometheus/client_golang/prometheus" -) - -// The RoundTripperFunc type is an adapter to allow the use of ordinary -// functions as RoundTrippers. If f is a function with the appropriate -// signature, RountTripperFunc(f) is a RoundTripper that calls f. -type RoundTripperFunc func(req *http.Request) (*http.Response, error) - -// RoundTrip implements the RoundTripper interface. -func (rt RoundTripperFunc) RoundTrip(r *http.Request) (*http.Response, error) { - return rt(r) -} - -// InstrumentRoundTripperInFlight is a middleware that wraps the provided -// http.RoundTripper. It sets the provided prometheus.Gauge to the number of -// requests currently handled by the wrapped http.RoundTripper. -// -// See the example for ExampleInstrumentRoundTripperDuration for example usage. -func InstrumentRoundTripperInFlight(gauge prometheus.Gauge, next http.RoundTripper) RoundTripperFunc { - return RoundTripperFunc(func(r *http.Request) (*http.Response, error) { - gauge.Inc() - defer gauge.Dec() - return next.RoundTrip(r) - }) -} - -// InstrumentRoundTripperCounter is a middleware that wraps the provided -// http.RoundTripper to observe the request result with the provided CounterVec. -// The CounterVec must have zero, one, or two labels. The only allowed label -// names are "code" and "method". The function panics if any other instance -// labels are provided. Partitioning of the CounterVec happens by HTTP status -// code and/or HTTP method if the respective instance label names are present -// in the CounterVec. For unpartitioned counting, use a CounterVec with -// zero labels. -// -// If the wrapped RoundTripper panics or returns a non-nil error, the Counter -// is not incremented. -// -// See the example for ExampleInstrumentRoundTripperDuration for example usage. -func InstrumentRoundTripperCounter(counter *prometheus.CounterVec, next http.RoundTripper) RoundTripperFunc { - code, method := checkLabels(counter) - - return RoundTripperFunc(func(r *http.Request) (*http.Response, error) { - resp, err := next.RoundTrip(r) - if err == nil { - counter.With(labels(code, method, r.Method, resp.StatusCode)).Inc() - } - return resp, err - }) -} - -// InstrumentRoundTripperDuration is a middleware that wraps the provided -// http.RoundTripper to observe the request duration with the provided ObserverVec. -// The ObserverVec must have zero, one, or two labels. The only allowed label -// names are "code" and "method". The function panics if any other instance -// labels are provided. The Observe method of the Observer in the ObserverVec -// is called with the request duration in seconds. Partitioning happens by HTTP -// status code and/or HTTP method if the respective instance label names are -// present in the ObserverVec. For unpartitioned observations, use an -// ObserverVec with zero labels. Note that partitioning of Histograms is -// expensive and should be used judiciously. -// -// If the wrapped RoundTripper panics or returns a non-nil error, no values are -// reported. -func InstrumentRoundTripperDuration(obs prometheus.ObserverVec, next http.RoundTripper) RoundTripperFunc { - code, method := checkLabels(obs) - - return RoundTripperFunc(func(r *http.Request) (*http.Response, error) { - start := time.Now() - resp, err := next.RoundTrip(r) - if err == nil { - obs.With(labels(code, method, r.Method, resp.StatusCode)).Observe(time.Since(start).Seconds()) - } - return resp, err - }) -} |