How to use

CommandPortService

in

co.cask.cdap.common.service

/**
 * Returns the port that the server is binded to.
 *
 * @return An int represent the port number.
 */
public int getPort() {
 Preconditions.checkState(isRunning());
 return port;
}

@Override
protected void run() throws Exception {
 LOG.info("Running commandPortService at localhost:" + port);
 serve();
}

@Test
public void testCommandPortServer() throws Exception {
 IncrementCommandHandler handler = new IncrementCommandHandler();
 final CommandPortService server = CommandPortService.builder("test")
                        .addCommandHandler("increment", "Increments a counter", handler)
                        .build();
 Futures.addCallback(server.start(), new FutureCallback<Service.State>() {
  @Override
  public void onSuccess(Service.State result) {
   Socket clientSocket = new Socket("localhost", server.getPort());
   try {
    BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(clientSocket.getOutputStream(), "UTF-8"));
  server.stopAndWait();
 Assert.assertEquals(Service.State.TERMINATED, server.state());

 /**
  * Builds the {@link CommandPortService}.
  *
  * @return A {@link CommandPortService}.
  */
 public CommandPortService build() {
  if (!hasHelp) {
   final String helpString = helpStringBuilder.toString();
   handlerBuilder.put("help", new CommandHandler() {
    @Override
    public void handle(BufferedWriter respondWriter) throws IOException {
     respondWriter.write(helpString);
     respondWriter.newLine();
    }
   });
  }
  return new CommandPortService(port, handlerBuilder.build());
 }
}

 /**
  * Builds the {@link CommandPortService}.
  *
  * @return A {@link CommandPortService}.
  */
 public CommandPortService build() {
  if (!hasHelp) {
   final String helpString = helpStringBuilder.toString();
   handlerBuilder.put("help", new CommandHandler() {
    @Override
    public void handle(BufferedWriter respondWriter) throws IOException {
     respondWriter.write(helpString);
     respondWriter.newLine();
    }
   });
  }
  return new CommandPortService(port, handlerBuilder.build());
 }
}

/**
 * Returns the port that the server is binded to.
 *
 * @return An int represent the port number.
 */
public int getPort() {
 Preconditions.checkState(isRunning());
 return port;
}

@Override
protected void run() throws Exception {
 LOG.info("Running commandPortService at localhost:" + port);
 serve();
}

while (isRunning()) {
 try {
  Socket socket = serverSocket.accept();

while (isRunning()) {
 try {
  Socket socket = serverSocket.accept();