Пример #1
0
func (*DefaultRemoteExecutor) Execute(req *client.Request, config *client.Config, command []string, stdin io.Reader, stdout, stderr io.Writer, tty bool) error {
	executor := remotecommand.New(req, config, command, stdin, stdout, stderr, tty)
	return executor.Execute()
}
Пример #2
0
func RunExec(f *Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer, cmd *cobra.Command, args []string) error {
	podName := util.GetFlagString(cmd, "pod")
	if len(podName) == 0 {
		return util.UsageError(cmd, "POD is required for exec")
	}

	if len(args) < 1 {
		return util.UsageError(cmd, "COMMAND is required for exec")
	}

	namespace, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	client, err := f.Client()
	if err != nil {
		return err
	}

	pod, err := client.Pods(namespace).Get(podName)
	if err != nil {
		return err
	}

	if pod.Status.Phase != api.PodRunning {
		glog.Fatalf("Unable to execute command because pod is not running. Current status=%v", pod.Status.Phase)
	}

	containerName := util.GetFlagString(cmd, "container")
	if len(containerName) == 0 {
		containerName = pod.Spec.Containers[0].Name
	}

	var stdin io.Reader
	tty := util.GetFlagBool(cmd, "tty")
	if util.GetFlagBool(cmd, "stdin") {
		stdin = cmdIn
		if tty {
			if file, ok := cmdIn.(*os.File); ok {
				inFd := file.Fd()
				if term.IsTerminal(inFd) {
					oldState, err := term.SetRawTerminal(inFd)
					if err != nil {
						glog.Fatal(err)
					}
					// this handles a clean exit, where the command finished
					defer term.RestoreTerminal(inFd, oldState)

					// SIGINT is handled by term.SetRawTerminal (it runs a goroutine that listens
					// for SIGINT and restores the terminal before exiting)

					// this handles SIGTERM
					sigChan := make(chan os.Signal, 1)
					signal.Notify(sigChan, syscall.SIGTERM)
					go func() {
						<-sigChan
						term.RestoreTerminal(inFd, oldState)
						os.Exit(0)
					}()
				} else {
					glog.Warning("Stdin is not a terminal")
				}
			} else {
				tty = false
				glog.Warning("Unable to use a TTY")
			}
		}
	}

	config, err := f.ClientConfig()
	if err != nil {
		return err
	}

	req := client.RESTClient.Get().
		Prefix("proxy").
		Resource("minions").
		Name(pod.Status.Host).
		Suffix("exec", namespace, podName, containerName)

	e := remotecommand.New(req, config, args, stdin, cmdOut, cmdErr, tty)
	return e.Execute()
}