package org.apache.helix.recipes.rabbitmq;
   
   /*
    * 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.
   */
  
  import com.rabbitmq.client.Channel;
  import com.rabbitmq.client.Connection;
  import com.rabbitmq.client.ConnectionFactory;
  
  public class Emitter
  {
  
    private static final String EXCHANGE_NAME = "topic_logs";
  
    public static void main(String[] args) throws Exception
    {
      if (args.length < 1)
      {
        System.err.println("USAGE: java Emitter rabbitmqServer (e.g. localhost) numberOfMessage (optional)");
        System.exit(1);
      }
      
      final String mqServer = args[0];  // "zzhang-ld";
      int count = Integer.MAX_VALUE;
      if (args.length > 1)
      {
        try
        {
          count = Integer.parseInt(args[1]);
        } catch (Exception e) {
          // TODO: handle exception
        }
      }
      System.out.println("Sending " + count + " messages with random topic id");
      
  
      ConnectionFactory factory = new ConnectionFactory();
      factory.setHost(mqServer);
      Connection connection = factory.newConnection();
      Channel channel = connection.createChannel();
  
      channel.exchangeDeclare(EXCHANGE_NAME, "topic");
  
      for (int i = 0; i < count; i++)
      {
        int rand = ((int) (Math.random() * 10000) % SetupConsumerCluster.DEFAULT_PARTITION_NUMBER);
        String routingKey = "topic_" + rand;
        String message = "message_" + rand;
  
        channel.basicPublish(EXCHANGE_NAME, routingKey, null, message.getBytes());
        System.out.println(" [x] Sent '" + routingKey + "':'" + message + "'");
        
        Thread.sleep(1000);
      }
      
      connection.close();
    }
  
  }