【GO】jeager

安装

• docker

docker pull jaegertracing/all-in-one:latest
docker run \
  --rm \
  --name jaeger \
  -d \
  -p6831:6831/udp \
  -p16686:16686 \
  -p14268:14268 \
  jaegertracing/all-in-one:latest

// --rm 可能导致报错自，报错如下，删除参数即可
// Error response from daemon: Cannot update container dd7608a4303ea3f961367222267c0b4b220a9207e18fb8699f4bb8f2469f525f: Restart policy cannot be updated because AutoRemove is enabled for the container

• 查看容器及设置自启动

docker ps -a
docker container update --restart=always  容器id

• 访问前先开放16686端口

http://xxx.xxx.xxx.xxx:16686

入门

• 将tracer设为全局

import "github.com/opentracing/opentracing-go"

• 示例

package main

import (
	"github.com/opentracing/opentracing-go"
	"github.com/uber/jaeger-client-go"
	jaegercfg "github.com/uber/jaeger-client-go/config"
	"time"
)

func main()  {
	cfg := jaegercfg.Configuration{
		Sampler: &jaegercfg.SamplerConfig{
			Type:  jaeger.SamplerTypeConst,
			Param: 1,
		},
		Reporter: &jaegercfg.ReporterConfig{
			LogSpans: true,
			LocalAgentHostPort: "xxx.xxx.xxx.xxx:6831",
		},
		ServiceName: "ff-user-test-web",
	}

	tracer, closer, err := cfg.NewTracer(jaegercfg.Logger(jaeger.StdLogger))
	if err != nil {
		panic(err)
	}
	opentracing.SetGlobalTracer(tracer)  // 通过三方 github.com/opentracing/opentracing-go 将 tracer 设置为全局 opentracing.GlobalTracer()
	defer closer.Close()

	// 这里使用全局的 tracer ，将原生 tracer.StartSpan 替换成 opentracing.StartSpan 即可
	parentSpan := opentracing.StartSpan("funmain1")

	span1 := opentracing.StartSpan("fun11", opentracing.ChildOf(parentSpan.Context()))
	time.Sleep(time.Millisecond * 500)
	span1.Finish()

	time.Sleep(time.Millisecond * 100)

	span2 := opentracing.StartSpan("fun22", opentracing.ChildOf(span1.Context()))
	time.Sleep(time.Millisecond * 1000)
	span2.Finish()

	parentSpan.Finish()
}

grpc融合

• 安装grpc的opentracing

• 下载包，不要直接安装，因为需要修改源码，如果安装了包使用下边命令清除

go clean -i github.com/grpc-ecosystem/grpc-opentracing/go/otgrpc

gin融合