/*
* 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.resource.adapter.jms.inflow.dlq;
import javax.jms.Message;
import javax.naming.Context;
import org.jboss.resource.adapter.jms.inflow.JmsActivation;
/**
* A DLQ Handler that knows about JBossMQ redelivery properties
*
* @author <a href="adrian@jboss.com">Adrian Brock</a>
* @version $Revision: 57189 $
*/
public class JBossMQDLQHandler extends AbstractDLQHandler
{
/** Properties copied from org.jboss.mq.SpyMessage */
protected static final String JMS_JBOSS_REDELIVERY_COUNT = "JMS_JBOSS_REDELIVERY_COUNT";
/** Properties copied from org.jboss.mq.SpyMessage */
protected static final String JMS_JBOSS_REDELIVERY_LIMIT = "JMS_JBOSS_REDELIVERY_LIMIT";
/** The maximum number of resends */
protected int maxResent;
public void setup(JmsActivation activation, Context ctx) throws Exception
{
super.setup(activation, ctx);
maxResent = activation.getActivationSpec().getDLQMaxResent();
}
protected boolean handleDelivery(Message msg)
{
int max = maxResent;
try
{
if (msg.propertyExists(JMS_JBOSS_REDELIVERY_LIMIT))
max = msg.getIntProperty(JMS_JBOSS_REDELIVERY_LIMIT);
if (msg.propertyExists(JMS_JBOSS_REDELIVERY_COUNT))
{
int count = msg.getIntProperty(JMS_JBOSS_REDELIVERY_COUNT);
if (count > max)
{
warnDLQ(msg, count, max);
return true;
}
}
}
catch (Throwable t)
{
log.warn("Unexpected error retrieving message properties " + msg, t);
}
return false;
}
} |