/*
* 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.servicemix.jbi.nmr.flow.jms;
import javax.jbi.JBIException;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.Session;
import javax.jms.Topic;
import org.apache.activemq.advisory.AdvisorySupport;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQMessage;
import org.apache.activemq.command.ConsumerId;
import org.apache.activemq.command.ConsumerInfo;
import org.apache.activemq.command.RemoveInfo;
import org.apache.activemq.pool.PooledConnectionFactory;
/**
* Use for message routing among a network of containers. All
* routing/registration happens automatically.
*
* @version $Revision: 1148530 $
* @org.apache.xbean.XBean element="jmsFlow"
*/
public class JMSFlow extends AbstractJMSFlow {
private PooledConnectionFactory factory;
protected ConnectionFactory createConnectionFactoryFromUrl(String jmsURL) {
factory = (jmsURL != null) ? new PooledConnectionFactory(jmsURL) : new PooledConnectionFactory();
return factory;
}
/**
* Listener on the ActiveMQ advisory topic so we get messages when a cluster
* node is added or removed
*/
protected void onConsumerMonitorMessage(Message advisoryMessage) {
if (!started.get()) {
return;
}
Object obj = ((ActiveMQMessage) advisoryMessage).getDataStructure();
if (obj instanceof ConsumerInfo) {
ConsumerInfo info = (ConsumerInfo) obj;
addClusterNode(info.getConsumerId().getConnectionId());
} else if (obj instanceof RemoveInfo) {
ConsumerId consumerId = (ConsumerId) ((RemoveInfo) obj).getObjectId();
removeClusterNode(consumerId.getConnectionId());
}
}
public void startConsumerMonitor() throws JMSException {
Session broadcastSession = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Topic broadcastTopic = broadcastSession.createTopic(getBroadcastDestinationName());
Topic advisoryTopic = AdvisorySupport.getConsumerAdvisoryTopic((ActiveMQDestination) broadcastTopic);
monitorMessageConsumer = broadcastSession.createConsumer(advisoryTopic);
monitorMessageConsumer.setMessageListener(new MessageListener() {
public void onMessage(Message message) {
onConsumerMonitorMessage(message);
}
});
}
@Override
public void shutDown() throws JBIException {
super.shutDown();
if (factory != null) {
try {
factory.stop();
} catch (Exception e) {
LOGGER.warn("Unable to stop JMS connection pool: " + e.getMessage(), e);
}
}
}
}