org.apache.activemq.artemis.core.server.impl.QueueManagerImpl Maven / Gradle / Ivy
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* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
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package org.apache.activemq.artemis.core.server.impl;
import org.apache.activemq.artemis.api.core.SimpleString;
import org.apache.activemq.artemis.core.server.ActiveMQServer;
import org.apache.activemq.artemis.core.server.ActiveMQServerLogger;
import org.apache.activemq.artemis.core.server.Queue;
import org.apache.activemq.artemis.core.server.QueueManager;
import org.apache.activemq.artemis.core.settings.impl.AddressSettings;
import org.apache.activemq.artemis.utils.ReferenceCounterUtil;
public class QueueManagerImpl extends ReferenceCounterUtil implements QueueManager {
private final SimpleString queueName;
private final ActiveMQServer server;
private void doIt() {
Queue queue = server.locateQueue(queueName);
//the queue may already have been deleted and this is a result of that
if (queue == null) {
if (ActiveMQServerLogger.LOGGER.isDebugEnabled()) {
ActiveMQServerLogger.LOGGER.debug("no queue to delete \"" + queueName + "\".");
}
return;
}
if (isAutoDelete(queue) && consumerCountCheck(queue) && delayCheck(queue) && messageCountCheck(queue)) {
performAutoDeleteQueue(server, queue);
} else if (queue.isPurgeOnNoConsumers()) {
purge(queue);
}
}
private static void purge(Queue queue) {
long consumerCount = queue.getConsumerCount();
long messageCount = queue.getMessageCount();
if (ActiveMQServerLogger.LOGGER.isDebugEnabled()) {
ActiveMQServerLogger.LOGGER.debug("purging queue \"" + queue.getName() + "\": consumerCount = " + consumerCount + "; messageCount = " + messageCount);
}
try {
queue.deleteMatchingReferences(QueueImpl.DEFAULT_FLUSH_LIMIT, null, AckReason.KILLED);
} catch (Exception e) {
ActiveMQServerLogger.LOGGER.failedToPurgeQueue(e, queue.getName());
}
}
public static void performAutoDeleteQueue(ActiveMQServer server, Queue queue) {
SimpleString queueName = queue.getName();
AddressSettings settings = server.getAddressSettingsRepository().getMatch(queue.getAddress().toString());
if (ActiveMQServerLogger.LOGGER.isDebugEnabled()) {
ActiveMQServerLogger.LOGGER.debug("deleting auto-created queue \"" + queueName + "\": consumerCount = " + queue.getConsumerCount() + "; messageCount = " + queue.getMessageCount() + "; isAutoDelete = " + queue.isAutoDelete());
}
try {
server.destroyQueue(queueName, null, true, false, settings.isAutoDeleteAddresses(), true);
} catch (Exception e) {
ActiveMQServerLogger.LOGGER.errorRemovingAutoCreatedQueue(e, queueName);
}
}
public static boolean isAutoDelete(Queue queue) {
return queue.isAutoDelete();
}
public static boolean messageCountCheck(Queue queue) {
return queue.getAutoDeleteMessageCount() == -1 || queue.getMessageCount() <= queue.getAutoDeleteMessageCount();
}
public static boolean delayCheck(Queue queue) {
return System.currentTimeMillis() - queue.getConsumerRemovedTimestamp() >= queue.getAutoDeleteDelay();
}
public static boolean consumerCountCheck(Queue queue) {
return queue.getConsumerCount() == 0;
}
public QueueManagerImpl(ActiveMQServer server, SimpleString queueName) {
// This needs to be an executor
// otherwise we may have dead-locks in certain cases such as failure,
// where consumers are closed after callbacks
super(server.getExecutorFactory().getExecutor());
this.server = server;
this.queueName = queueName;
this.setTask(this::doIt);
}
@Override
public SimpleString getQueueName() {
return queueName;
}
}