如何使用杜松子酒作为服务器来编写普罗米修斯出口商指标

Question

这是官方的prometheus golang-client示例：package mainimport (    "log"    "net/http"    "github.com/prometheus/client_golang/prometheus"    "github.com/prometheus/client_golang/prometheus/promhttp")var cpuTemp = prometheus.NewGauge(prometheus.GaugeOpts{        Name: "cpu_temperature_celsius",        Help: "Current temperature of the CPU.",    })func init() {    // Metrics have to be registered to be exposed:    prometheus.MustRegister(cpuTemp)}func main() {    cpuTemp.Set(65.3)    // The Handler function provides a default handler to expose metrics    // via an HTTP server. "/metrics" is the usual endpoint for that.    http.Handle("/metrics", promhttp.Handler())    log.Fatal(http.ListenAndServe(":8080", nil))}在此代码中，http 服务器使用该库。promhttp使用框架时如何修改指标处理程序？我没有在文档中找到答案。gin

Answer 1

我们只是利用处理程序。promhttp

package main

import (

    "github.com/gin-gonic/gin"

    "github.com/prometheus/client_golang/prometheus"

    "github.com/prometheus/client_golang/prometheus/promhttp"

)

var cpuTemp = prometheus.NewGauge(prometheus.GaugeOpts{

    Name: "cpu_temperature_celsius",

    Help: "Current temperature of the CPU.",

})

func init() {

    prometheus.MustRegister(cpuTemp)

}

func prometheusHandler() gin.HandlerFunc {

    h := promhttp.Handler()

    return func(c *gin.Context) {

        h.ServeHTTP(c.Writer, c.Request)

    }

}

func main() {

    cpuTemp.Set(65.3)

    r := gin.New()

    r.GET("/", func(c *gin.Context) {

        c.JSON(200, "Hello world!")

    })

    r.GET("/metrics", prometheusHandler())

    r.Run()

}

或者我们总是可以切换到普罗米修斯中间件 - https://github.com/zsais/go-gin-prometheus

Answer 2

使用杜松子酒包装机

router.GET("/metrics", gin.WrapH(promhttp.Handler()))

Answer 3

我正在将普罗米修斯与其他库 https://github.com/Depado/ginprom 一起使用：

package main

import (

    "github.com/Depado/ginprom"

    "github.com/gin-gonic/gin"

)

func main() {

    r := gin.Default()

    p := ginprom.New(

        ginprom.Engine(r),

        ginprom.Subsystem("gin"),

        ginprom.Path("/metrics"),

    )

    r.Use(p.Instrument())

    r.GET("/hello/:id", func(c *gin.Context) {})

    r.GET("/world/:id", func(c *gin.Context) {})

    r.Run("127.0.0.1:8080")

}