Example #1
0
func runCommand(args []string) error {
	var oldState *term.State
	var err error
	if term.IsTerminal(int(os.Stdin.Fd())) && os.Getenv("NORAW") == "" {
		oldState, err = term.MakeRaw(int(os.Stdin.Fd()))
		if err != nil {
			return err
		}
		defer term.Restore(int(os.Stdin.Fd()), oldState)
		c := make(chan os.Signal, 1)
		signal.Notify(c, os.Interrupt)
		go func() {
			for _ = range c {
				term.Restore(int(os.Stdin.Fd()), oldState)
				log.Printf("\nSIGINT received\n")
				os.Exit(0)
			}
		}()
	}
	// FIXME: we want to use unix sockets here, but net.UnixConn doesn't expose
	// CloseWrite(), which we need to cleanly signal that stdin is closed without
	// closing the connection.
	// See http://code.google.com/p/go/issues/detail?id=3345
	if conn, err := rcli.Call("tcp", "127.0.0.1:4242", args...); err == nil {
		receiveStdout := docker.Go(func() error {
			_, err := io.Copy(os.Stdout, conn)
			return err
		})
		sendStdin := docker.Go(func() error {
			_, err := io.Copy(conn, os.Stdin)
			if err := conn.CloseWrite(); err != nil {
				log.Printf("Couldn't send EOF: " + err.Error())
			}
			return err
		})
		if err := <-receiveStdout; err != nil {
			return err
		}
		if !term.IsTerminal(int(os.Stdin.Fd())) {
			if err := <-sendStdin; err != nil {
				return err
			}
		}
	} else {
		service, err := docker.NewServer()
		if err != nil {
			return err
		}
		if err := rcli.LocalCall(service, os.Stdin, os.Stdout, args...); err != nil {
			return err
		}
	}
	if oldState != nil {
		term.Restore(int(os.Stdin.Fd()), oldState)
	}
	return nil
}
Example #2
0
func runCommand(args []string) error {
	// FIXME: we want to use unix sockets here, but net.UnixConn doesn't expose
	// CloseWrite(), which we need to cleanly signal that stdin is closed without
	// closing the connection.
	// See http://code.google.com/p/go/issues/detail?id=3345
	if conn, err := rcli.Call("tcp", "127.0.0.1:4242", args...); err == nil {
		options := conn.GetOptions()
		if options.RawTerminal &&
			term.IsTerminal(int(os.Stdin.Fd())) &&
			os.Getenv("NORAW") == "" {
			if oldState, err := rcli.SetRawTerminal(); err != nil {
				return err
			} else {
				defer rcli.RestoreTerminal(oldState)
			}
		}
		receiveStdout := docker.Go(func() error {
			_, err := io.Copy(os.Stdout, conn)
			return err
		})
		sendStdin := docker.Go(func() error {
			_, err := io.Copy(conn, os.Stdin)
			if err := conn.CloseWrite(); err != nil {
				log.Printf("Couldn't send EOF: " + err.Error())
			}
			return err
		})
		if err := <-receiveStdout; err != nil {
			return err
		}
		if !term.IsTerminal(int(os.Stdin.Fd())) {
			if err := <-sendStdin; err != nil {
				return err
			}
		}
	} else {
		service, err := docker.NewServer()
		if err != nil {
			return err
		}
		dockerConn := rcli.NewDockerLocalConn(os.Stdout)
		defer dockerConn.Close()
		if err := rcli.LocalCall(service, os.Stdin, dockerConn, args...); err != nil {
			return err
		}
	}
	return nil
}