opentracing

README

opentracing中间件使用方法

安装

go get github.com/hanguangbaihuo/sparrow_cloud_go

iris框架中使用方法

import "github.com/hanguangbaihuo/sparrow_cloud_go/middleware/opentracing"
func main() {
    // 追踪链配置：初始化Jaeger为GlobalTracer
    // 初始化失败则程序直接结束
    closer := opentracing.InitGlobalTracer("YourServiceName")
    defer closer.Close()
    // 初始化iris app
    app := iris.New()
    // 使用opentracing中间件，从header中提取父span，并存储至中间件
    app.Use(opentracing.Serve("YourServiceName"))
    ...
}

注意

该中间件需要配合restclient包使用，才能实现追踪链
restclient包的地址：github.com/hanguangbaihuo/sparrow_cloud_go/restclient

Documentation

Index

• Variables
• func InitGlobalTracer(serviceName string) io.Closer
• func Serve(operationName string) func(context.Context)

Variables

var ActiveSpanKey = "myOpenTracingSpan"

Functions

func InitGlobalTracer

func InitGlobalTracer(serviceName string) io.Closer

InitGlobalTracer is for setting Global Tracer. you must do the function in main() function like follow:

closer := InitGlobalTracer("your_service_name")
defer closer.Close()

func Serve

func Serve(operationName string) func(context.Context)

Serve is opentracing middleware function parameter operationName is a operaion name, usually named it service name