nps some config hot reload

lib/daemon/daemon.go

@@ -24,21 +24,40 @@ func InitDaemon(f string, runPath string, pidPath string) {
 	switch os.Args[1] {
 	case "start":
 		start(args, f, pidPath, runPath)
-		os.Exit(0)
 	case "stop":
 		stop(f, args[0], pidPath)
-		os.Exit(0)
 	case "restart":
 		stop(f, args[0], pidPath)
 		start(args, f, pidPath, runPath)
-		os.Exit(0)
 	case "status":
 		if status(f, pidPath) {
 			log.Printf("%s is running", f)
 		} else {
 			log.Printf("%s is not running", f)
 		}
-		os.Exit(0)
+	case "reload":
+		reload(f, pidPath)
+	}
+	os.Exit(0)
+}
+
+func reload(f string, pidPath string) {
+	if f == "nps" && !common.IsWindows() && !status(f, pidPath) {
+		log.Println("reload fail")
+		return
+	}
+	var c *exec.Cmd
+	var err error
+	b, err := ioutil.ReadFile(filepath.Join(pidPath, f+".pid"))
+	if err == nil {
+		c = exec.Command("/bin/bash", "-c", `kill -30 `+string(b))
+	} else {
+		log.Fatalln("reload error,pid file does not exist")
+	}
+	if c.Run() == nil {
+		log.Println("reload success")
+	} else {
+		log.Println("reload fail")
 	}
 }