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() {
    // 初始化iris app
    app := iris.New()
    // 使用opentracing中间件，从header中b3 headers，用于之后注入restclient请求头
    app.Use(opentracing.Serve)
    ...
}

注意

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

Documentation

Index

• Variables
• func Serve(ctx context.Context)
• func ServeBk(ctx context.Context)
• type Entry
• type OpentracingHeader
  • func (oh *OpentracingHeader) GetHeaders() interface{}
  • func (oh *OpentracingHeader) SetHeaders(data interface{})

Variables

var HeaderStore []Entry

HeaderStore is global variable to saving opentracing b3 headers

var OpentracingInf = new(OpentracingHeader)

OpentracingInf global variable to transmit opentracing b3 header data

Functions

func Serve

func Serve(ctx context.Context)

Serve is for saving incoming request header of b3

func ServeBk

func ServeBk(ctx context.Context)

ServeBk is for saving incoming request header of b3 it is a backup fucntion for Serve in this middleware

Types

type Entry

type Entry struct {
	Key   string
	Value []string
}

Entry is key value store struct

type OpentracingHeader

type OpentracingHeader struct {
	sync.RWMutex
	Headers interface{}
}

OpentracingHeader is saving opentracing b3 header data field Headers is map[string][]string type

func (*OpentracingHeader) GetHeaders

func (oh *OpentracingHeader) GetHeaders() interface{}

GetHeaders get OpentracingHeader Headers function

func (*OpentracingHeader) SetHeaders

func (oh *OpentracingHeader) SetHeaders(data interface{})

SetHeaders set OpentracingHeader Headers function