class ShutdownTelnetHandler implements TelnetHandler {

    @Override
    public String telnet(Channel channel, String message) throws RemotingException {

        int sleepMilliseconds = 0;
        if (StringUtils.isNotEmpty(message)) {
            String[] parameters = message.split("\\s+");
            if (parameters.length == 2 && "-t".equals(parameters[0]) && StringUtils.isInteger(parameters[1])) {
                sleepMilliseconds = Integer.parseInt(parameters[1]);
            } else {
                return "Invalid parameter,please input like shutdown -t 10000";
            }
        }
        long start = System.currentTimeMillis();
        if (sleepMilliseconds > 0) {
            try {
                Thread.sleep(sleepMilliseconds);
            } catch (InterruptedException e) {
                return "Failed to invoke shutdown command, cause: " + e.getMessage();
            }
        }
        StringBuilder buf = new StringBuilder();
        DubboShutdownHook.getDubboShutdownHook().unregister();
        DubboShutdownHook.getDubboShutdownHook().doDestroy();
        long end = System.currentTimeMillis();
        buf.append("Application has shutdown successfully");
        buf.append("\r\nelapsed: ");
        buf.append(end - start);
        buf.append(" ms.");
        return buf.toString();
    }

}