同时注册多个服务

package main

import (
    "context"
    "flag"
    "fmt"
    "github.com/gorilla/mux"
    uuid "github.com/satori/go.uuid"
    "goetcd/util"
    "log"
    "net/http"
    "os"
    "os/signal"
    "strconv"
    "syscall"
)

func main()  {
    name:=flag.String("name","","服务名称")
    port:=flag.Int("p",0,"服务端口")
    flag.Parse()
    if *name==""{
        log.Fatal("请指定服务名")
    }
    if *port==0{
        log.Fatal("请指定端口")
    }




    service:=util.NewService()
    serviceID:=uuid.NewV4().String()  //这里改动了，服务id随机生成
    serviceName:=*name //注意这里，从flag取到的是指针数据
    serviceAddr:="192.168.29.1"
    servicePort:=*port //注意这里

    router:=mux.NewRouter()
    router.HandleFunc("/product/{id:\\d+}", func(writer http.ResponseWriter, request *http.Request) {
        vars:=mux.Vars(request)
        str:="get product ByID:"+vars["id"]
        writer.Write([]byte(str))
    })

    errChan:=make(chan error)

    httpServer:=&http.Server{
        Addr:":"+strconv.Itoa(servicePort),
        Handler:router,
    }
    go(func() {
        err:=service.RegService(serviceID,serviceName,serviceAddr+":"+strconv.Itoa(servicePort))
        if err!=nil{
            errChan<-err
            return
        }
        err=httpServer.ListenAndServe()
        if err!=nil{
            errChan<-err
            return
        }
    })()

    go(func(){
        sig:=make(chan os.Signal)
        signal.Notify(sig,syscall.SIGINT,syscall.SIGTERM)
        errChan<-fmt.Errorf("%s",<-sig)
    })()

    getErr:=<-errChan
    err:=service.UnregService(serviceID)//反注册
    if err!=nil{
        fmt.Println(err)
    }
    //可以执行一些 回收工作，譬如关闭数据库
    err=httpServer.Shutdown(context.Background())
    if err!=nil{
        log.Fatal(err)
    }
    log.Fatal(getErr)

}

来自为知笔记(Wiz)