001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.activemq.broker.region; 018 019 import javax.jms.JMSException; 020 021 import org.apache.activemq.broker.BrokerService; 022 import org.apache.activemq.broker.ConnectionContext; 023 import org.apache.activemq.command.ActiveMQDestination; 024 import org.apache.activemq.command.ConsumerInfo; 025 import org.apache.activemq.command.MessageDispatchNotification; 026 import org.apache.activemq.thread.TaskRunnerFactory; 027 import org.apache.activemq.usage.SystemUsage; 028 import org.apache.commons.logging.Log; 029 import org.apache.commons.logging.LogFactory; 030 031 /** 032 * @version $Revision: 1.7 $ 033 */ 034 public class TempQueueRegion extends AbstractTempRegion { 035 private static final Log LOG = LogFactory.getLog(TempQueueRegion.class); 036 private final BrokerService brokerService; 037 038 public TempQueueRegion(RegionBroker broker, BrokerService brokerService, DestinationStatistics destinationStatistics, SystemUsage memoryManager, TaskRunnerFactory taskRunnerFactory, 039 DestinationFactory destinationFactory) { 040 super(broker, destinationStatistics, memoryManager, taskRunnerFactory, destinationFactory); 041 // We should allow the following to be configurable via a Destination 042 // Policy 043 // setAutoCreateDestinations(false); 044 this.brokerService = brokerService; 045 } 046 047 protected Destination doCreateDestination(ConnectionContext context, ActiveMQDestination destination) throws Exception { 048 TempQueue result = new TempQueue(brokerService, destination, null, destinationStatistics, taskRunnerFactory); 049 result.initialize(); 050 return result; 051 } 052 053 protected Subscription createSubscription(ConnectionContext context, ConsumerInfo info) throws JMSException { 054 if (info.isBrowser()) { 055 return new QueueBrowserSubscription(broker,usageManager,context, info); 056 } else { 057 return new QueueSubscription(broker,usageManager,context, info); 058 } 059 } 060 061 public String toString() { 062 return "TempQueueRegion: destinations=" + destinations.size() + ", subscriptions=" + subscriptions.size() + ", memory=" + usageManager.getMemoryUsage().getPercentUsage() + "%"; 063 } 064 065 public void removeDestination(ConnectionContext context, ActiveMQDestination destination, long timeout) throws Exception { 066 067 // Force a timeout value so that we don't get an error that 068 // there is still an active sub. Temp destination may be removed 069 // while a network sub is still active which is valid. 070 if (timeout == 0) { 071 timeout = 1; 072 } 073 074 super.removeDestination(context, destination, timeout); 075 } 076 077 /* 078 * For a Queue, dispatch order is imperative to match acks, so the dispatch is deferred till 079 * the notification to ensure that the subscription chosen by the master is used. 080 * 081 * (non-Javadoc) 082 * @see org.apache.activemq.broker.region.AbstractRegion#processDispatchNotification(org.apache.activemq.command.MessageDispatchNotification) 083 */ 084 public void processDispatchNotification(MessageDispatchNotification messageDispatchNotification) throws Exception { 085 processDispatchNotificationViaDestination(messageDispatchNotification); 086 } 087 088 }