org.apache.activemq.broker.region.TempTopicRegion Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.activemq.broker.region;
import javax.jms.JMSException;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.broker.region.policy.PolicyEntry;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ConsumerInfo;
import org.apache.activemq.thread.TaskRunnerFactory;
import org.apache.activemq.usage.SystemUsage;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
*/
public class TempTopicRegion extends AbstractTempRegion {
private static final Logger LOG = LoggerFactory.getLogger(TempTopicRegion.class);
public TempTopicRegion(RegionBroker broker, DestinationStatistics destinationStatistics, SystemUsage memoryManager, TaskRunnerFactory taskRunnerFactory,
DestinationFactory destinationFactory) {
super(broker, destinationStatistics, memoryManager, taskRunnerFactory, destinationFactory);
}
protected Subscription createSubscription(ConnectionContext context, ConsumerInfo info) throws JMSException {
if (info.isDurable()) {
throw new JMSException("A durable subscription cannot be created for a temporary topic.");
}
try {
TopicSubscription answer = new TopicSubscription(broker, context, info, usageManager);
// lets configure the subscription depending on the destination
ActiveMQDestination destination = info.getDestination();
if (destination != null && broker.getDestinationPolicy() != null) {
PolicyEntry entry = broker.getDestinationPolicy().getEntryFor(destination);
if (entry != null) {
entry.configure(broker, usageManager, answer);
}
}
answer.init();
return answer;
} catch (Exception e) {
LOG.error("Failed to create TopicSubscription ", e);
JMSException jmsEx = new JMSException("Couldn't create TopicSubscription");
jmsEx.setLinkedException(e);
throw jmsEx;
}
}
public String toString() {
return "TempTopicRegion: destinations=" + destinations.size() + ", subscriptions=" + subscriptions.size() + ", memory=" + usageManager.getMemoryUsage().getPercentUsage() + "%";
}
public void removeDestination(ConnectionContext context, ActiveMQDestination destination, long timeout) throws Exception {
// Force a timeout value so that we don't get an error that
// there is still an active sub. Temp destination may be removed
// while a network sub is still active which is valid.
if (timeout == 0) {
timeout = 1;
}
super.removeDestination(context, destination, timeout);
}
}