Ejemplo n.º 1
0
func status() {
	if !util.FileExists(util.PidFilePath()) {
		fmt.Println("REX-Ray is stopped")
		return
	}
	pid, _ := util.ReadPidFile()
	fmt.Printf("REX-Ray is running at pid %d\n", pid)
}
Ejemplo n.º 2
0
func tryToStartDaemon() {
	_, _, thisAbsPath := util.GetThisPathParts()

	fmt.Print("Starting REX-Ray...")

	signal := make(chan byte)
	client := fmt.Sprintf("%s/%s.sock", os.TempDir(), util.RandomString(32))
	log.WithField("client", client).Debug("trying to start service")

	l, lErr := net.Listen("unix", client)
	failOnError(lErr)

	go func() {
		conn, acceptErr := l.Accept()
		if acceptErr != nil {
			fmt.Printf("FAILED!\n  %v\n", acceptErr)
			panic(acceptErr)
		}
		defer conn.Close()
		defer os.Remove(client)

		log.Debug("accepted connection")

		buff := make([]byte, 1)
		conn.Read(buff)

		log.Debug("received data")

		signal <- buff[0]
	}()

	cmdArgs := []string{
		"start",
		fmt.Sprintf("--client=%s", client),
		fmt.Sprintf("--logLevel=%v", r.Config.LogLevel)}

	if r.Config.Host != "" {
		cmdArgs = append(cmdArgs, fmt.Sprintf("--host=%s", r.Config.Host))
	}

	cmd := exec.Command(thisAbsPath, cmdArgs...)
	cmd.Stderr = os.Stderr

	cmdErr := cmd.Start()
	failOnError(cmdErr)

	sigVal := <-signal
	if sigVal != 0 {
		fmt.Println("FAILED!")
		panic(1)
	}

	pid, _ := util.ReadPidFile()
	fmt.Printf("SUCESS!\n\n")
	fmt.Printf("  The REX-Ray daemon is now running at PID %d. To\n", pid)
	fmt.Printf("  shutdown the daemon execute the following command:\n\n")
	fmt.Printf("    sudo %s stop\n\n", thisAbsPath)
}
Ejemplo n.º 3
0
func stop() {
	checkOpPerms("stopped")

	if !util.FileExists(util.PidFilePath()) {
		fmt.Println("REX-Ray is already stopped")
		panic(1)
	}

	fmt.Print("Shutting down REX-Ray...")

	pid, pidErr := util.ReadPidFile()
	failOnError(pidErr)

	proc, procErr := os.FindProcess(pid)
	failOnError(procErr)

	killErr := proc.Signal(syscall.SIGHUP)
	failOnError(killErr)

	fmt.Println("SUCCESS!")
}
Ejemplo n.º 4
0
func start() {
	checkOpPerms("started")

	log.WithField("os.Args", os.Args).Debug("invoking service start")

	pidFile := util.PidFilePath()

	if util.FileExists(pidFile) {
		pid, pidErr := util.ReadPidFile()
		if pidErr != nil {
			fmt.Printf("Error reading REX-Ray PID file at %s\n", pidFile)
		} else {
			fmt.Printf("REX-Ray already running at PID %d\n", pid)
		}
		panic(1)
	}

	if fg || client != "" {
		startDaemon()
	} else {
		tryToStartDaemon()
	}
}
Ejemplo n.º 5
0
func (c *CLI) start() {
	checkOpPerms("started")

	log.WithField("os.Args", os.Args).Debug("invoking service start")

	pidFile := util.PidFilePath()

	if gotil.FileExists(pidFile) {
		pid, pidErr := util.ReadPidFile()
		if pidErr != nil {
			fmt.Printf("Error reading REX-Ray PID file at %s\n", pidFile)
			panic(1)
		}

		rrproc, err := findProcess(pid)
		if err != nil {
			fmt.Printf("Error finding process for PID %d", pid)
			panic(1)
		}

		if rrproc != nil {
			fmt.Printf("REX-Ray already running at PID %d\n", pid)
			panic(1)
		}

		if err := os.RemoveAll(pidFile); err != nil {
			fmt.Println("Error removing REX-Ray PID file")
			panic(1)
		}
	}

	if c.fg || c.client != "" {
		c.startDaemon()
	} else {
		c.tryToStartDaemon()
	}
}