1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
// Copyright 2016 Circonus, Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package circonusgometrics
import (
"net/http"
"time"
)
// TrackHTTPLatency wraps Handler functions registered with an http.ServerMux tracking latencies.
// Metrics are of the for go`HTTP`<method>`<name>`latency and are tracked in a histogram in units
// of seconds (as a float64) providing nanosecond ganularity.
func (m *CirconusMetrics) TrackHTTPLatency(name string, handler func(http.ResponseWriter, *http.Request)) func(http.ResponseWriter, *http.Request) {
return func(rw http.ResponseWriter, req *http.Request) {
start := time.Now().UnixNano()
handler(rw, req)
elapsed := time.Now().UnixNano() - start
m.RecordValue("go`HTTP`"+req.Method+"`"+name+"`latency", float64(elapsed)/float64(time.Second))
}
}
|
