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README.md: prettifying

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Aliaksandr Valialkin 2019-04-10 17:24:35 +03:00
parent adb3c38465
commit 0b4667243b
1 changed files with 7 additions and 5 deletions
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README.md
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@ -29,7 +29,7 @@ var (
requestsTotal = metrics.NewCounter("requests_total") requestsTotal = metrics.NewCounter("requests_total")
// Register summary with a single label. // Register summary with a single label.
requestDuration = metrics.NewSummary(`requests_duration_seconds{handler="/my/super/handler"}`) requestDuration = metrics.NewSummary(`requests_duration_seconds{path="/foobar/baz"}`)
// Register gauge with two labels. // Register gauge with two labels.
queueSize = metrics.NewGauge(`queue_size{queue="foobar",topic="baz"}`, func() float64 { queueSize = metrics.NewGauge(`queue_size{queue="foobar",topic="baz"}`, func() float64 {
@ -39,14 +39,16 @@ var (
// ... // ...
func requestHandler() { func requestHandler() {
startTime := time.Now() // Increment requestTotal counter.
// ...
requestsTotal.Inc() requestsTotal.Inc()
startTime := time.Now()
processRequest()
// Update requestDuration summary.
requestDuration.UpdateDuration(startTime) requestDuration.UpdateDuration(startTime)
} }
// ...
// `/metrics` handler for exposing the registered metrics. // Expose the registered metrics at `/metrics` path.
http.HandleFunc("/metrics", func(w http.ResponseWriter, req *http.Request) { http.HandleFunc("/metrics", func(w http.ResponseWriter, req *http.Request) {
metrics.WritePrometheus(w, true) metrics.WritePrometheus(w, true)
}) })