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* JBoss, a division of Red Hat *
* Copyright 2006, Red Hat Middleware, LLC, and individual *
* contributors as indicated by the @authors tag. See the *
* copyright.txt 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.gatein.pc.portlet.aspects;
import org.gatein.common.concurrent.Valve;
import org.gatein.pc.portlet.container.ContainerPortletInvoker;
import org.gatein.pc.portlet.container.PortletContainerContext;
import org.gatein.pc.portlet.container.managed.PortletApplicationRegistry;
import org.gatein.pc.api.invocation.PortletInvocation;
import org.gatein.pc.portlet.PortletInvokerInterceptor;
import org.gatein.pc.api.invocation.response.PortletInvocationResponse;
import org.gatein.pc.api.invocation.response.UnavailableResponse;
import org.gatein.pc.portlet.impl.jsr168.PortletContainerImpl;
import org.gatein.pc.api.PortletInvokerException;
/**
* This aspect has two responsabilities :<br/> <ul> <li>continue the request only if the portlet container valve is
* open. When the valve is closed, it will return an unavailable response to the caller. When the valve is open then the
* current thread of execution enters the valve for the duration of the call.</li> <li> if the response from the next
* aspect is an unavailable result, stop the container in order to destroy the portlet and implement this part of the
* portlet specification.</li> </ul>
*
* @author <a href="mailto:julien@jboss.org">Julien Viet</a>
* @version $Revision: 7226 $
*/
public class ValveInterceptor extends PortletInvokerInterceptor
{
/** . */
private PortletApplicationRegistry registry;
public PortletApplicationRegistry getPortletApplicationRegistry()
{
return registry;
}
public void setPortletApplicationRegistry(PortletApplicationRegistry portletApplicationRegistry)
{
this.registry = portletApplicationRegistry;
}
public PortletInvocationResponse invoke(PortletInvocation invocation) throws IllegalArgumentException, PortletInvokerException
{
PortletContainerImpl container = (PortletContainerImpl)invocation.getAttribute(ContainerPortletInvoker.PORTLET_CONTAINER);
//
Valve valve = container.getValve();
if (valve.beforeInvocation())
{
PortletInvocationResponse response;
try
{
response = super.invoke(invocation);
}
finally
{
// Release the valve
valve.afterInvocation();
}
// Stop the container if necessary
if (response instanceof UnavailableResponse)
{
PortletContainerContext containerContext = container.getContext();
// This call will wait until all the current threads have exited the component valve.
// Perhaps this should be done asynchronously as it may lead to a long delay ?
// It could be made parametrizable as a runtime option too, so the deployer can choose what mode is preferable
containerContext.managedStop();
}
//
return response;
}
else
{
return new UnavailableResponse();
}
}
}