/*
* 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.ejb.txtimer;
// $Id: EJBTimerServiceLocator.java 81030 2008-11-14 12:59:42Z dimitris@jboss.org $
import javax.ejb.TimerService;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import org.jboss.ejb.Container;
import org.jboss.logging.Logger;
import org.jboss.mx.util.MBeanProxyExt;
import org.jboss.mx.util.MBeanServerLocator;
/**
* Locates the EJBTimerService, either as MBean or as local instance.
*
* It first checks if the EJBTimerServiceImpl is registered with the MBeanServer,
* if not it creates a singleton and uses that.
*
* @author Thomas.Diesler@jboss.org
* @author Dimitris.Andreadis@jboss.org
* @version $Revision: 81030 $
* @since 07-Apr-2004
*/
public class EJBTimerServiceLocator
{
// logging support
private static Logger log = Logger.getLogger(EJBTimerServiceLocator.class);
private static EJBTimerService ejbTimerService;
/**
* Locates the EJBTimerService, first as MBean, then as singleton
*/
public static EJBTimerService getEjbTimerService()
{
try
{
// First try the MBean server
MBeanServer server = MBeanServerLocator.locateJBoss();
if (server != null && server.isRegistered(EJBTimerService.OBJECT_NAME))
ejbTimerService = new MBeanDelegate(server);
}
catch (Exception ignore)
{
}
// This path can be used for standalone test cases
if (ejbTimerService == null)
{
EJBTimerServiceImpl ejbTimerServiceImpl = new EJBTimerServiceImpl();
ejbTimerService = ejbTimerServiceImpl;
try
{
ejbTimerServiceImpl.create();
ejbTimerServiceImpl.start();
}
catch (Exception e)
{
throw new RuntimeException("Cannot start EJBTimerService", e);
}
}
return ejbTimerService;
}
/**
* Delegates method calls to the EJBTimerService to the MBean server
*/
public static class MBeanDelegate implements EJBTimerService
{
private EJBTimerService mbeanEjbTimerService;
public MBeanDelegate(MBeanServer server)
{
try
{
mbeanEjbTimerService = (EJBTimerService)MBeanProxyExt.create(EJBTimerService.class, EJBTimerService.OBJECT_NAME, server);
}
catch (Exception e)
{
throw new IllegalStateException("Cannot create EJBTimerService proxy: " + e.getMessage());
}
}
public TimerService createTimerService(ObjectName containerId, Object instancePk, Container container)
throws IllegalStateException
{
try
{
TimerService timerService = mbeanEjbTimerService.createTimerService(containerId, instancePk, container);
return timerService;
}
catch (Exception e)
{
log.error("Cannot createTimerService", e);
return null;
}
}
public TimerService createTimerService(ObjectName containerId, Object instancePk, TimedObjectInvoker invoker)
throws IllegalStateException
{
try
{
TimerService timerService = mbeanEjbTimerService.createTimerService(containerId, instancePk, invoker);
return timerService;
}
catch (Exception e)
{
log.error("Cannot createTimerService", e);
return null;
}
}
public TimerService getTimerService(ObjectName containerId, Object instancePk)
throws IllegalStateException
{
try
{
TimerService timerService = mbeanEjbTimerService.getTimerService(containerId, instancePk);
return timerService;
}
catch (Exception e)
{
log.error("Cannot getTimerService", e);
return null;
}
}
public void removeTimerService(ObjectName containerId, Object instancePk)
throws IllegalStateException
{
try
{
mbeanEjbTimerService.removeTimerService(containerId, instancePk);
}
catch (Exception e)
{
log.error("Cannot removeTimerService", e);
}
}
public void removeTimerService(ObjectName containerId, boolean keepState) throws IllegalStateException
{
try
{
mbeanEjbTimerService.removeTimerService(containerId, keepState);
}
catch (Exception e)
{
log.error("Cannot removeTimerService", e);
}
}
public void restoreTimers(ObjectName containerId, ClassLoader loader) throws IllegalStateException
{
try
{
mbeanEjbTimerService.restoreTimers(containerId, loader);
}
catch (Exception e)
{
log.error("Cannot restoreTimer", e);
}
}
}
}