Package org.jboss.as.ejb3.timerservice

Source Code of org.jboss.as.ejb3.timerservice.JBossTimerServiceFactory

/*
* 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.as.ejb3.timerservice;

import javax.ejb.TimerService;
import javax.management.ObjectName;

import org.jboss.ejb.AllowedOperationsAssociation;
import org.jboss.ejb.txtimer.EJBTimerService;
import org.jboss.ejb3.timerservice.spi.TimedObjectInvoker;
import org.jboss.ejb3.timerservice.spi.TimerServiceFactory;
import org.jboss.logging.Logger;
import org.jboss.mx.util.MBeanProxyExt;
import org.jboss.mx.util.MBeanServerLocator;

/**
* Factory to create timer services which use the JBoss EJB Timer Service.
*
* @author <a href="mailto:carlo.dewolf@jboss.com">Carlo de Wolf</a>
* @version $Revision: 85991 $
*/
public class JBossTimerServiceFactory implements TimerServiceFactory
{
   private static Logger log = Logger.getLogger(JBossTimerServiceFactory.class);
  
   public TimerService createTimerService(TimedObjectInvoker invoker)
   {
      TimerService timerService = null;
      try
      {
         EJBTimerService service = getEJBTimerService();
         ObjectName objectName = new ObjectName(invoker.getTimedObjectId());
         org.jboss.ejb.txtimer.TimedObjectInvoker bridge = new TimedObjectInvokerBridge(invoker);
         TimerService delegate = service.createTimerService(objectName, null, bridge);
         timerService = new TimerServiceFacade(objectName, delegate);
      }
      catch (Exception e)
      {
         //throw new EJBException("Could not create timer service", e);
         if (log.isTraceEnabled())
         {
            log.trace("Unable to initialize timer service", e);
         }
         else
         {
            log.trace("Unable to initialize timer service");
         }
      }
      return timerService;
   }

   protected EJBTimerService getEJBTimerService()
   {
      return (EJBTimerService) MBeanProxyExt.create(EJBTimerService.class, EJBTimerService.OBJECT_NAME, MBeanServerLocator.locateJBoss());
   }
  
   public void removeTimerService(TimerService timerService)
   {
      removeTimerService(((TimerServiceFacade) timerService).getContainerId());
   }

   protected void removeTimerService(ObjectName containerId)
   {
      try
      {
         EJBTimerService service = getEJBTimerService();
         service.removeTimerService(containerId, true);
      }
      catch (Exception e)
      {
         //throw new EJBException("Could not remove timer service", e);
         if (log.isTraceEnabled())
         {
            log.trace("Unable to initialize timer service", e);
         }
         else
         {
            log.trace("Unable to initialize timer service");
         }
      }
   }
  
   public void restoreTimerService(TimerService aTimerService)
   {
      if (aTimerService == null)
      {
         log.warn("TIMER SERVICE IS NOT INSTALLED");
         return;
      }
      TimerServiceFacade timerService = (TimerServiceFacade) aTimerService;
      ClassLoader loader = null;
     
      // FIXME: A hack to circumvent the check in TimerServiceFacade
      // In AS itself (/EJB2) the container has an unsecured timer service association
      // see org.jboss.ejb.Container.getTimerService(Object pKey)
      AllowedOperationsAssociation.pushInMethodFlag(AllowedOperationsAssociation.IN_BUSINESS_METHOD);
      try
      {
         getEJBTimerService().restoreTimers(timerService.getContainerId(), loader);
      }
      finally
      {
         AllowedOperationsAssociation.popInMethodFlag();
      }
   }
  
   public void suspendTimerService(TimerService timerService)
   {
      removeTimerService(timerService);
   }
}
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