public Object execute()

in gshell-commands/gshell-ssh/src/main/java/org/apache/geronimo/gshell/commands/ssh/SshAction.java [103:169]
48 lines of code
6 McCabe index (conditional complexity)

    public Object execute(final CommandContext context) throws Exception {
        assert context != null;
        IO io = context.getIo();
        MessageSource messages = context.getCommand().getMessages();

        //
        // TODO: Parse hostname for <username>@<hostname>
        //
        
        io.info(messages.format("info.connecting", hostname, port));

        // If the username/password was not configured via cli, then prompt the user for the values
        if (username == null || password == null) {
            PromptReader prompter = new PromptReader(io);
            String text;

            log.debug("Prompting user for credentials");

            if (username == null) {
                text = messages.getMessage("prompt.username");
                username = prompter.readLine(text + ": ", new UsernamePasswordValidator(text));
            }

            if (password == null) {
                text = messages.getMessage("prompt.password");
                password = prompter.readPassword(text + ": ", new UsernamePasswordValidator(text));
            }
        }

        // Create the client from prototype
        SshClient client = container.getBean(SshClient.class);
        log.debug("Created client: {}", client);
        client.start();

        try {
            ConnectFuture future = client.connect(hostname, port);
            future.await();
            ClientSession session = future.getSession();

            try {
                io.info(messages.getMessage("info.connected"));

                session.authPassword(username, password);
                int ret = session.waitFor(ClientSession.WAIT_AUTH | ClientSession.CLOSED | ClientSession.AUTHED, 0);
                if ((ret & ClientSession.AUTHED) == 0) {
                    io.err.println("Authentication failed");
                    return Result.FAILURE;
                }

                ClientChannel channel = session.createChannel("shell");
                channel.setIn(new NoCloseInputStream(io.inputStream));
                channel.setOut(new NoCloseOutputStream(io.outputStream));
                channel.setErr(new NoCloseOutputStream(io.errorStream));
                channel.open();
                channel.waitFor(ClientChannel.CLOSED, 0);
            } finally {
                session.close(false);

            }
        } finally {
            client.stop();
        }

        io.verbose(messages.getMessage("verbose.disconnected"));

        return Result.SUCCESS;
    }