/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.management.mejb;
import org.jboss.logging.Logger;
import javax.jms.*;
import javax.management.Notification;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.rmi.PortableRemoteObject;
/**
* Remote Listener using JMS to send the event
*
* @author ???
* @version $Revision: 81025 $
* @jmx:mbean extends="org.jboss.management.mejb.ListenerMBean"
*/
public class JMSNotificationListener
implements JMSNotificationListenerMBean
{
private static final Logger log = Logger.getLogger(JMSNotificationListener.class);
// JMS Queue Session and Sender must be created on the server-side
// therefore they are transient and created on the first notification
// call
private transient QueueSender mSender;
private transient QueueSession mSession;
private String mJNDIName;
private Queue mQueue;
public JMSNotificationListener(String pJNDIName,
Queue pQueue) throws JMSException
{
mJNDIName = pJNDIName;
mQueue = pQueue;
}
/**
* Handles the given notification by sending this to the remote
* client listener
*
* @param pNotification Notification to be send
* @param pHandback Handback object
*/
public void handleNotification(Notification pNotification,
Object pHandback)
{
try
{
if (mSender == null)
{
// Get QueueConnectionFactory, create Connection, Session and then Sender
QueueConnection lConnection = getQueueConnection(mJNDIName);
mSession = lConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
mSender = mSession.createSender(mQueue);
}
// Create a message and send to the Queue
Message lMessage = mSession.createObjectMessage(pNotification);
mSender.send(lMessage);
}
catch (Exception e)
{
log.error("failed to handle notification", e);
}
}
/**
* Test if this and the given Object are equal. This is true if the given
* object both refer to the same local listener
*
* @param pTest Other object to test if equal
* @return True if both are of same type and
* refer to the same local listener
*/
public boolean equals(Object pTest)
{
if (pTest instanceof JMSNotificationListener)
{
try
{
return mQueue.getQueueName().equals(((JMSNotificationListener) pTest).mQueue.getQueueName());
}
catch (JMSException e)
{
log.error("unexpcted failure while tetsing equality", e);
}
}
return false;
}
/**
* @return Hashcode of the local listener
*/
public int hashCode()
{
return mQueue.hashCode();
}
/**
* Creates a SurveyManagement bean.
*
* @return Returns a SurveyManagement bean for use by the Survey handler.
*/
private QueueConnection getQueueConnection(String pJNDIName)
throws NamingException, JMSException
{
Context aJNDIContext = new InitialContext();
Object aRef = aJNDIContext.lookup(pJNDIName);
QueueConnectionFactory aFactory = (QueueConnectionFactory)
PortableRemoteObject.narrow(aRef, QueueConnectionFactory.class);
QueueConnection lConnection = aFactory.createQueueConnection();
lConnection.start();
return lConnection;
}
}