/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, 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.aop.deployment;
import java.util.concurrent.atomic.AtomicLong;
import javax.management.JMException;
import javax.management.ListenerNotFoundException;
import javax.management.Notification;
import javax.management.NotificationFilter;
import javax.management.NotificationListener;
import org.jboss.aop.asintegration.core.AspectManagerServiceDelegate;
import org.jboss.aop.asintegration.core.AspectManagerServiceDelegateJRockit;
import org.jboss.mx.notification.ListenerRegistration;
import org.jboss.mx.notification.ListenerRegistry;
/**
* AspectManager service meant for use with JRockit or JDK 1.4
*
* @author <a href="kabir.khan@jboss.com">Kabir Khan</a>
* @version $Revision: 94155 $
*/
public class AspectManagerService extends AbstractAspectManagerService
{
/** Sequence number for jmx notifications we send out */
private AtomicLong sequenceNumber = new AtomicLong();
/** The registered listeners */
private ListenerRegistry registry = new ListenerRegistry();
protected AspectManagerServiceDelegate createDelegate()
{
return new AspectManagerServiceDelegateJRockit();
}
public void attachClass(String classname)
{
Notification msg = new Notification("AOP class attached", this, sequenceNumber.incrementAndGet());
msg.setUserData(classname);
sendNotification(msg);
}
public void addNotificationListener(NotificationListener listener,
NotificationFilter filter,
Object handback)
{
try
{
registry.add(listener, filter, handback);
}
catch (JMException e)
{
// This shouldn't happen?
throw new RuntimeException(e.toString());
}
}
public void removeNotificationListener(NotificationListener listener)
throws ListenerNotFoundException
{
registry.remove(listener);
}
public void removeNotificationListener(NotificationListener listener,
NotificationFilter filter,
Object handback)
throws ListenerNotFoundException
{
registry.remove(listener, filter, handback);
}
public void sendNotification(Notification notification)
{
ListenerRegistry.ListenerRegistrationIterator iterator = registry.iterator();
while (iterator.hasNext())
{
ListenerRegistration registration = iterator.nextRegistration();
NotificationFilter filter = registration.getFilter();
if (filter == null)
handleNotification(registration.getListener(), notification, registration.getHandback());
else if (filter.isNotificationEnabled(notification))
handleNotification(registration.getListener(), notification, registration.getHandback());
}
}
/**
* Handle the notification, the default implementation is to synchronously invoke the listener.
*
* @param listener the listener to notify
* @param notification the notification
* @param handback the handback object
*/
public void handleNotification(NotificationListener listener,
Notification notification,
Object handback)
{
try
{
listener.handleNotification(notification, handback);
}
catch (Throwable ignored)
{
log.debug("Ignored unhandled throwable from listener", ignored);
}
}
}