/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements. See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache license, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License. You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the license for the specific language governing permissions and
   * limitations under the license.
   */
  
  package org.apache.logging.log4j.core.net.mom.jms;
  
  import java.io.BufferedReader;
  import java.io.InputStreamReader;
  import java.nio.charset.Charset;
  
  import org.apache.logging.log4j.core.net.server.JmsServer;
  
  /**
   * Receives Topic messages that contain LogEvents. This implementation expects that all messages
   * are serialized log events.
   */
  public class JmsTopicReceiver {
  
      /**
       * Main startup for the receiver.
       * @param args The command line arguments.
       * @throws Exception if an error occurs.
       */
      public static void main(final String[] args) throws Exception {
          if (args.length != 4) {
              usage("Wrong number of arguments.");
          }
  
          final String tcfBindingName = args[0];
          final String topicBindingName = args[1];
          final String username = args[2];
          final String password = args[3];
          final JmsServer server = new JmsServer(tcfBindingName, topicBindingName, username, password);
          server.start();
  
          final Charset enc = Charset.defaultCharset();
          final BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in, enc));
          // Loop until the word "exit" is typed
          System.out.println("Type \"exit\" to quit JmsTopicReceiver.");
          while (true) {
              final String line = stdin.readLine();
              if (line == null || line.equalsIgnoreCase("exit")) {
                  System.out.println("Exiting. Kill the application if it does not exit "
                      + "due to daemon threads.");
                  server.stop();
                  return;
              }
          }
      }
  
      private static void usage(final String msg) {
          System.err.println(msg);
          System.err.println("Usage: java " + JmsTopicReceiver.class.getName()
              + " TopicConnectionFactoryBindingName TopicBindingName username password");
          System.exit(1);
      }
  }