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 java.io.IOException;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.QueueingConsumer;
public class ConsumerThread extends Thread
{
private static final String EXCHANGE_NAME = "topic_logs";
private final String _partition;
private final String _mqServer;
private final String _consumerId;
public ConsumerThread(String partition, String mqServer, String consumerId)
{
_partition = partition;
_mqServer = mqServer;
_consumerId = consumerId;
}
@Override
public void run()
{
Connection connection = null;
try
{
ConnectionFactory factory = new ConnectionFactory();
factory.setHost(_mqServer);
connection = factory.newConnection();
Channel channel = connection.createChannel();
channel.exchangeDeclare(EXCHANGE_NAME, "topic");
String queueName = channel.queueDeclare().getQueue();
String bindingKey = _partition;
channel.queueBind(queueName, EXCHANGE_NAME, bindingKey);
System.out.println(" [*] " + _consumerId + " Waiting for messages on " + bindingKey + ". To exit press CTRL+C");
QueueingConsumer consumer = new QueueingConsumer(channel);
channel.basicConsume(queueName, true, consumer);
while (true)
{
QueueingConsumer.Delivery delivery = consumer.nextDelivery();
String message = new String(delivery.getBody());
String routingKey = delivery.getEnvelope().getRoutingKey();
System.out.println(" [x] " + _consumerId + " Received '" + routingKey + "':'" + message + "'");
}
} catch (InterruptedException e)
{
System.err.println(" [-] " + _consumerId + " on " + _partition + " is interrupted ...");
}
catch (Exception e)
{
e.printStackTrace();
} finally
{
if (connection != null)
{
try
{
connection.close();
} catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}