func FW(max int,duration time.Duration){
//定義一個channel ，進行初始化
contain := make(chan bool , max)
for i := 0 ; i max ; i ++{
contain - true//寫入channel
}
go func() {//開啟一個線程
for {
contain - true
time.Sleep(duration)
}
}()
for - contain {//如果上一個線程寫入一個true，就會運行這個代碼塊
fmt.Println("helllo world")
}
}
定義一個chan，chan大小為需要限制的qps大小，go一個協程啟動tick，每1000/qps時間在tick中寫入數值，啟動另一個協程，讀取chan中的值，如果讀取到chan中有值，則向下層接口發送請求。
package main
import (
"fmt"
"time"
"httpclient"
)
var LEN int = 10
func tickStoreCh(arrlen int, ch chan int) {
len := 1000/arrlen
fmt.Println(len)
tickTime := time.NewTicker(time.Duration(len)*time.Millisecond)
var i int
for {
fmt.Println(len)
i++
-tickTime.C
ch- i
}
}
func OrganReq(org string, qps int) {
ch := make(chan int, qps)
go tickStoreCh(qps, ch)
time.Sleep(1000*time.Millisecond)
for {
//收客戶請求，發送http請求給RE
client := httpclient.NewHttpClient(time.Duration(1000)*time.Millisecond, time.Duration(2000)*time.Millisecond)
header := make(map[string]string)
header["Content-Type"] = "application/json;charset=utf-8"
code, err := client.ResponseCode("http://127.0.0.1:19988", header, "llltest")
value := - ch
fmt.Println(code, value, err, "lenchan:", len(ch))
//time.Sleep(time.Second)
}
}
