go连接mysql的超时异常

[看着奢扣]

go通过exec.Command连接mysql， 希望10秒钟还是连不上报timeout
如何设计

[qybao]

用cotext控制timeout就好了，for example

import (
    "os/exec"
    "context"
)

func main() {
	ctx, cancel := context.WithTimeout(context.TODO(), time.Second * 10) //10秒timeout
	defer cancel()
	t1 := time.Now().Unix()
	out, err := exec.CommandContext(ctx, "sleep", "20").Output() //例子，sleep20秒
	//out, err := exec.CommandContext(ctx, "/usr/local/bin/mysql/mysql -u root").Output()
	t2 := time.Now().Unix()
	if err != nil {
	    fmt.Printf("err=%v\n", err)
	}
	fmt.Printf("out=%v, time=%v\n", out, t2-t1)
}