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add example for exporting prometheus metrics using
ghttp.Server (#3266
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/prometheus/client_golang/prometheus/promauto" | ||
| "github.com/prometheus/client_golang/prometheus/promhttp" | ||
|
|
||
| "github.com/gogf/gf/v2/frame/g" | ||
| "github.com/gogf/gf/v2/net/ghttp" | ||
| "github.com/gogf/gf/v2/util/grand" | ||
| ) | ||
|
|
||
| // Demo metric type Counter | ||
| var metricCounter = promauto.NewCounter( | ||
| prometheus.CounterOpts{ | ||
| Name: "demo_counter", | ||
| Help: "A demo counter.", | ||
| }, | ||
| ) | ||
|
|
||
| // Demo metric type Gauge. | ||
| var metricGauge = promauto.NewGauge( | ||
| prometheus.GaugeOpts{ | ||
| Name: "demo_gauge", | ||
| Help: "A demo gauge.", | ||
| }, | ||
| ) | ||
|
|
||
| func main() { | ||
| // Create prometheus metric registry. | ||
| registry := prometheus.NewRegistry() | ||
| registry.MustRegister( | ||
| metricCounter, | ||
| metricGauge, | ||
| ) | ||
|
|
||
| // Start metric http server. | ||
| s := g.Server() | ||
| s.SetPort(8000) | ||
| // Fake metric values. | ||
| // http://127.0.0.1:8000/ | ||
| s.BindHandler("/", func(r *ghttp.Request) { | ||
| metricCounter.Add(1) | ||
| metricGauge.Set(float64(grand.N(1, 100))) | ||
| r.Response.Write("fake ok") | ||
| }) | ||
| // Export metric values. | ||
| // You can view http://127.0.0.1:8000/metrics to see all metric values. | ||
| s.BindHandler("/metrics", ghttp.WrapH(promhttp.Handler())) | ||
| s.Run() | ||
| } |