我使用的是 gopkg.in/tylerb/graceful 包，
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package main
import (
"fmt"
"net/http"
"os"
"time"
"gopkg.in/tylerb/graceful.v1"
)
var (
now = time.Now()
)
func main() {
mux := http.NewServeMux()
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
duration, err := time.ParseDuration(r.FormValue("duration"))
if err != nil {
http.Error(w, err.Error(), 400)
return
}
time.Sleep(duration)
fmt.Fprintf(
w,
"started at %s slept for %d nanoseconds from pid %d.\n",
now,
duration.Nanoseconds(),
os.Getpid(),
)
})
graceful.Run(":3001", 21*time.Second, mux)
}
supervisord.conf 配置示例
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[program:golangn]
;user=root
command = /Users/weis/tmp/graceful2
process_name = golangnote
stopwaitsecs = 22
directory = /Users/weis/tmp
redirect_stderr=true
autostart=true
autorestart=true
需要注意的地方是两个 timeout 时间：
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graceful.Run(":3001", 21*time.Second, mux)
stopwaitsecs = 22
supervisord.conf 里的时间要比 go 脚本里的时间多 1 秒。
测试
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curl 'http://localhost:3001/?duration=20s'
curl 'http://localhost:3001/?duration=20s'
curl 'http://localhost:3001/?duration=0s'
supervisorctl restart all
curl 'http://localhost:3001/?duration=0s'