Golang:实现http服务器健康检查。 gocraft/health

Golang: implements http server health checking. gocraft/health

我想检查我的服务的健康状况,了解每个端点的指标。 我的服务调用其他一些服务并收到一个 Json 代码,我用它制作模板,然后将它发送到 http.ResponseWriter.

我搜索了一下,找到了这个包 "gocraft/health" 但我不太明白它是如何工作的。

是否有任何其他方法或包来生成指标,或者我应该只使用“gocraft/health。

提前致谢

最后,我选择了"gocraft/health",一个很棒的图书馆。

用法示例:

package main

import (
    "log"
    "net/http"
    "os"
    "time"

    "github.com/gocraft/health"
)

//should be global Var
var stream = health.NewStream()

func main() {
    // Log to stdout!
    stream.AddSink(&health.WriterSink{os.Stdout})
    // Make sink and add it to stream
    sink := health.NewJsonPollingSink(time.Minute*5, time.Minute*20)
    stream.AddSink(sink)
    // Start the HTTP server! This will expose metrics via a JSON API.
    adr := "127.0.0.1:5001"
    sink.StartServer(adr)

    http.HandleFunc("/api/getVastPlayer", vastPlayer)
    log.Println("Listening...")
    panic(http.ListenAndServe(":2001", nil))
}

根据上面的初始化选项,您的指标以 5 分钟为单位进行汇总。我们将在内存中保留 20 分钟的数据。没有任何东西被持久化到磁盘上。

您可以创建任意数量的工作岗位

func vastPlayer(w http.ResponseWriter, r *http.Request) {
  job_1 := stream.NewJob("/api/getVastPlayer")

  ...
  ...

  if bol {
    job_1.Complete(health.Success)
  } else {
    job_1.Complete(health.Error)
  }
}

启动您的应用程序后,这将通过 JSON API 公开指标。您可以浏览 /health 端点(例如,127.0.0.1:5001/health)以查看指标。你会得到这样的东西:

{
  "instance_id": "sd-69536.29342",
  "interval_duration": 86400000000000,
  "aggregations": [
    {
      "interval_start": "2015-06-11T02:00:00+02:00",
      "serial_number": 1340,
      "jobs": {
        "/api/getVastPlayer": {
          "timers": {},
          "events": {},
          "event_errs": {},
          "count": 1328,
          "nanos_sum": 140160794784,
          "nanos_sum_squares": 9.033775178022173E+19,
          "nanos_min": 34507863,
          "nanos_max": 2736850494,
          "count_success": 62,
          "count_validation_error": 1266,
          "count_panic": 0,
          "count_error": 0,
          "count_junk": 0
        },
        "timers": {},
        "events": {},
        "event_errs": {}
      }
    }
  ]
}

有关更多信息和功能,请查看此 link:

https://github.com/gocraft/health

如果您遇到这个问题是因为您正在寻找公开 /health 端点,那么即将推出用于健康检查的 RFC:https://github.com/inadarei/rfc-healthcheck

还有一个 Go 库 health-go 用于公开符合该 RFC 的健康端点:https://github.com/nelkinda/health-go

示例:

package main

import (
    "github.com/nelkinda/health-go"
    "net/http"
)

func main() {
    // 1. Create the health Handler.
    h := health.New(health.Health{Version: "1", ReleaseID: "1.0.0-SNAPSHOT"}) 

    // 2. Add the handler to your mux/server.
    http.HandleFunc("/health", h.Handler)

    // 3. Start your server.
    http.ListenAndServe(":80", nil)
}

它是可扩展的并支持许多内置检查,例如正常运行时间和系统信息。

免责声明:我是 health-go.

的作者