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 */ 017package org.apache.activemq.broker.region; 018 019import javax.jms.JMSException; 020 021import org.apache.activemq.broker.BrokerService; 022import org.apache.activemq.broker.ConnectionContext; 023import org.apache.activemq.broker.region.policy.PolicyEntry; 024import org.apache.activemq.command.ActiveMQDestination; 025import org.apache.activemq.command.ConsumerInfo; 026import org.apache.activemq.command.MessageDispatchNotification; 027import org.apache.activemq.thread.TaskRunnerFactory; 028import org.apache.activemq.usage.SystemUsage; 029import org.slf4j.Logger; 030import org.slf4j.LoggerFactory; 031 032/** 033 * 034 */ 035public class TempQueueRegion extends AbstractTempRegion { 036 private static final Logger LOG = LoggerFactory.getLogger(TempQueueRegion.class); 037 private final BrokerService brokerService; 038 039 public TempQueueRegion(RegionBroker broker, BrokerService brokerService, DestinationStatistics destinationStatistics, SystemUsage memoryManager, TaskRunnerFactory taskRunnerFactory, 040 DestinationFactory destinationFactory) { 041 super(broker, destinationStatistics, memoryManager, taskRunnerFactory, destinationFactory); 042 // We should allow the following to be configurable via a Destination 043 // Policy 044 // setAutoCreateDestinations(false); 045 this.brokerService = brokerService; 046 } 047 048 protected Destination doCreateDestination(ConnectionContext context, ActiveMQDestination destination) throws Exception { 049 TempQueue result = new TempQueue(brokerService, destination, null, destinationStatistics, taskRunnerFactory); 050 brokerService.getDestinationPolicy(); 051 configureQueue(result, destination); 052 result.initialize(); 053 return result; 054 } 055 056 protected Subscription createSubscription(ConnectionContext context, ConsumerInfo info) throws JMSException { 057 if (info.isBrowser()) { 058 return new QueueBrowserSubscription(broker,usageManager,context, info); 059 } else { 060 return new QueueSubscription(broker,usageManager,context, info); 061 } 062 } 063 064 public String toString() { 065 return "TempQueueRegion: destinations=" + destinations.size() + ", subscriptions=" + subscriptions.size() + ", memory=" + usageManager.getMemoryUsage().getPercentUsage() + "%"; 066 } 067 068 public void removeDestination(ConnectionContext context, ActiveMQDestination destination, long timeout) throws Exception { 069 070 // Force a timeout value so that we don't get an error that 071 // there is still an active sub. Temp destination may be removed 072 // while a network sub is still active which is valid. 073 if (timeout == 0) { 074 timeout = 1; 075 } 076 077 super.removeDestination(context, destination, timeout); 078 } 079 080 /* 081 * For a Queue, dispatch order is imperative to match acks, so the dispatch is deferred till 082 * the notification to ensure that the subscription chosen by the master is used. 083 * 084 * (non-Javadoc) 085 * @see org.apache.activemq.broker.region.AbstractRegion#processDispatchNotification(org.apache.activemq.command.MessageDispatchNotification) 086 */ 087 public void processDispatchNotification(MessageDispatchNotification messageDispatchNotification) throws Exception { 088 processDispatchNotificationViaDestination(messageDispatchNotification); 089 } 090 091 protected void configureQueue(Queue queue, ActiveMQDestination destination) { 092 if (broker == null) { 093 throw new IllegalStateException("broker property is not set"); 094 } 095 if (broker.getDestinationPolicy() != null) { 096 PolicyEntry entry = broker.getDestinationPolicy().getEntryFor(destination); 097 if (entry != null) { 098 entry.configure(broker,queue); 099 } 100 } 101 } 102 103}