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add example for exporting prometheus metrics using ghttp.Server (#3266)

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This commit is contained in:
John Guo
2024-01-16 14:07:49 +08:00
committed by GitHub
parent 905913f7be
commit 9407fda197
3 changed files with 67 additions and 2 deletions
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4
example/go.mod
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@ -1,6 +1,6 @@
module github.com/gogf/gf/example
go 1.20
go 1.18
require (
github.com/gogf/gf/contrib/config/apollo/v2 v2.6.1
@ -22,6 +22,7 @@ require (
github.com/hashicorp/go-cleanhttp v0.5.2
github.com/nacos-group/nacos-sdk-go v1.1.4
github.com/polarismesh/polaris-go v1.5.5
github.com/prometheus/client_golang v1.17.0
golang.org/x/time v0.3.0
google.golang.org/grpc v1.59.0
google.golang.org/protobuf v1.31.0
@ -93,7 +94,6 @@ require (
github.com/pelletier/go-toml v1.9.3 // indirect
github.com/pkg/errors v0.9.1 // indirect
github.com/polarismesh/specification v1.4.1 // indirect
github.com/prometheus/client_golang v1.17.0 // indirect
github.com/prometheus/client_model v0.4.1-0.20230718164431-9a2bf3000d16 // indirect
github.com/prometheus/common v0.44.0 // indirect
github.com/prometheus/procfs v0.11.1 // indirect

51
example/metric/prometheus/prometheus.go Normal file
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@ -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()
}