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.ConnectionContext; 022import org.apache.activemq.broker.region.policy.PolicyEntry; 023import org.apache.activemq.command.ActiveMQDestination; 024import org.apache.activemq.command.ConsumerInfo; 025import org.apache.activemq.thread.TaskRunnerFactory; 026import org.apache.activemq.usage.SystemUsage; 027import org.slf4j.Logger; 028import org.slf4j.LoggerFactory; 029 030/** 031 * 032 */ 033public class TempTopicRegion extends AbstractTempRegion { 034 035 private static final Logger LOG = LoggerFactory.getLogger(TempTopicRegion.class); 036 037 public TempTopicRegion(RegionBroker broker, DestinationStatistics destinationStatistics, SystemUsage memoryManager, TaskRunnerFactory taskRunnerFactory, 038 DestinationFactory destinationFactory) { 039 super(broker, destinationStatistics, memoryManager, taskRunnerFactory, destinationFactory); 040 // We should allow the following to be configurable via a Destination 041 // Policy 042 // setAutoCreateDestinations(false); 043 } 044 045 protected Subscription createSubscription(ConnectionContext context, ConsumerInfo info) throws JMSException { 046 if (info.isDurable()) { 047 throw new JMSException("A durable subscription cannot be created for a temporary topic."); 048 } 049 try { 050 TopicSubscription answer = new TopicSubscription(broker, context, info, usageManager); 051 // lets configure the subscription depending on the destination 052 ActiveMQDestination destination = info.getDestination(); 053 if (destination != null && broker.getDestinationPolicy() != null) { 054 PolicyEntry entry = broker.getDestinationPolicy().getEntryFor(destination); 055 if (entry != null) { 056 entry.configure(broker, usageManager, answer); 057 } 058 } 059 answer.init(); 060 return answer; 061 } catch (Exception e) { 062 LOG.error("Failed to create TopicSubscription ", e); 063 JMSException jmsEx = new JMSException("Couldn't create TopicSubscription"); 064 jmsEx.setLinkedException(e); 065 throw jmsEx; 066 } 067 } 068 069 public String toString() { 070 return "TempTopicRegion: destinations=" + destinations.size() + ", subscriptions=" + subscriptions.size() + ", memory=" + usageManager.getMemoryUsage().getPercentUsage() + "%"; 071 } 072 073 public void removeDestination(ConnectionContext context, ActiveMQDestination destination, long timeout) throws Exception { 074 075 // Force a timeout value so that we don't get an error that 076 // there is still an active sub. Temp destination may be removed 077 // while a network sub is still active which is valid. 078 if (timeout == 0) { 079 timeout = 1; 080 } 081 082 super.removeDestination(context, destination, timeout); 083 } 084 085 086 protected Destination doCreateDestination(ConnectionContext context, 087 ActiveMQDestination destination) throws Exception { 088 return destinationFactory.createDestination(context, destination, destinationStatistics); 089 } 090}