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.command.ActiveMQDestination; 023import org.apache.activemq.command.ConsumerInfo; 024import org.apache.activemq.command.MessageDispatchNotification; 025import org.apache.activemq.thread.TaskRunnerFactory; 026import org.apache.activemq.usage.SystemUsage; 027 028/** 029 * 030 */ 031public class TempQueueRegion extends AbstractTempRegion { 032 033 public TempQueueRegion(RegionBroker broker, DestinationStatistics destinationStatistics, SystemUsage memoryManager, TaskRunnerFactory taskRunnerFactory, 034 DestinationFactory destinationFactory) { 035 super(broker, destinationStatistics, memoryManager, taskRunnerFactory, destinationFactory); 036 } 037 038 protected Subscription createSubscription(ConnectionContext context, ConsumerInfo info) throws JMSException { 039 if (info.isBrowser()) { 040 return new QueueBrowserSubscription(broker,usageManager,context, info); 041 } else { 042 return new QueueSubscription(broker,usageManager,context, info); 043 } 044 } 045 046 public String toString() { 047 return "TempQueueRegion: destinations=" + destinations.size() + ", subscriptions=" + subscriptions.size() + ", memory=" + usageManager.getMemoryUsage().getPercentUsage() + "%"; 048 } 049 050 public void removeDestination(ConnectionContext context, ActiveMQDestination destination, long timeout) throws Exception { 051 052 // Force a timeout value so that we don't get an error that 053 // there is still an active sub. Temp destination may be removed 054 // while a network sub is still active which is valid. 055 if (timeout == 0) { 056 timeout = 1; 057 } 058 059 super.removeDestination(context, destination, timeout); 060 } 061 062 /* 063 * For a Queue, dispatch order is imperative to match acks, so the dispatch is deferred till 064 * the notification to ensure that the subscription chosen by the master is used. 065 * 066 * (non-Javadoc) 067 * @see org.apache.activemq.broker.region.AbstractRegion#processDispatchNotification(org.apache.activemq.command.MessageDispatchNotification) 068 */ 069 public void processDispatchNotification(MessageDispatchNotification messageDispatchNotification) throws Exception { 070 processDispatchNotificationViaDestination(messageDispatchNotification); 071 } 072}