/*
*
* 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.airavata.wsmg.client.amqp.rabbitmq;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.QueueingConsumer;
import org.apache.airavata.wsmg.client.amqp.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Properties;
/**
* AMQPBroadcastReceiverImpl class provides functionality to consume a broadcast message feed.
*/
public class AMQPBroadcastReceiverImpl extends AMQPClient implements AMQPBroadcastReceiver {
private static final Logger log = LoggerFactory.getLogger(AMQPBroadcastReceiverImpl.class);
private AMQPCallback callback = null;
public AMQPBroadcastReceiverImpl(Properties properties, AMQPCallback callback) {
super(properties);
this.callback = callback;
}
public void Subscribe() throws AMQPException {
if (callback != null) {
try {
Connection connection = connectionFactory.newConnection();
Channel channel = connection.createChannel();
channel.exchangeDeclare(AMQPUtil.EXCHANGE_NAME_FANOUT, AMQPUtil.EXCHANGE_TYPE_FANOUT);
String queueName = channel.queueDeclare().getQueue();
channel.queueBind(queueName, AMQPUtil.EXCHANGE_NAME_FANOUT, "");
QueueingConsumer consumer = new QueueingConsumer(channel);
channel.basicConsume(queueName, true, consumer);
while (true) {
QueueingConsumer.Delivery delivery = consumer.nextDelivery();
String message = new String(delivery.getBody());
callback.onMessage(message);
}
} catch (Exception e) {
throw new AMQPException(e);
}
}
}
}