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/*
*
* 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.qpid.server.handler;
import org.apache.qpid.AMQException;
import org.apache.qpid.framing.QueueDeleteBody;
import org.apache.qpid.framing.QueueDeleteOkBody;
import org.apache.qpid.framing.MethodRegistry;
import org.apache.qpid.protocol.AMQConstant;
import org.apache.qpid.server.protocol.AMQProtocolSession;
import org.apache.qpid.server.protocol.AMQSessionModel;
import org.apache.qpid.server.queue.QueueRegistry;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.state.AMQStateManager;
import org.apache.qpid.server.state.StateAwareMethodListener;
import org.apache.qpid.server.store.DurableConfigurationStore;
import org.apache.qpid.server.virtualhost.VirtualHost;
import org.apache.qpid.server.AMQChannel;
public class QueueDeleteHandler implements StateAwareMethodListener<QueueDeleteBody>
{
private static final QueueDeleteHandler _instance = new QueueDeleteHandler();
public static QueueDeleteHandler getInstance()
{
return _instance;
}
private final boolean _failIfNotFound;
public QueueDeleteHandler()
{
this(true);
}
public QueueDeleteHandler(boolean failIfNotFound)
{
_failIfNotFound = failIfNotFound;
}
public void methodReceived(AMQStateManager stateManager, QueueDeleteBody body, int channelId) throws AMQException
{
AMQProtocolSession protocolConnection = stateManager.getProtocolSession();
VirtualHost virtualHost = protocolConnection.getVirtualHost();
QueueRegistry queueRegistry = virtualHost.getQueueRegistry();
DurableConfigurationStore store = virtualHost.getDurableConfigurationStore();
AMQQueue queue;
if (body.getQueue() == null)
{
AMQChannel channel = protocolConnection.getChannel(channelId);
if (channel == null)
{
throw body.getChannelNotFoundException(channelId);
}
//get the default queue on the channel:
queue = channel.getDefaultQueue();
}
else
{
queue = queueRegistry.getQueue(body.getQueue());
}
if (queue == null)
{
if (_failIfNotFound)
{
throw body.getChannelException(AMQConstant.NOT_FOUND, "Queue " + body.getQueue() + " does not exist.");
}
}
else
{
if (body.getIfEmpty() && !queue.isEmpty())
{
throw body.getChannelException(AMQConstant.IN_USE, "Queue: " + body.getQueue() + " is not empty.");
}
else if (body.getIfUnused() && !queue.isUnused())
{
// TODO - Error code
throw body.getChannelException(AMQConstant.IN_USE, "Queue: " + body.getQueue() + " is still used.");
}
else
{
AMQSessionModel session = queue.getExclusiveOwningSession();
if (queue.isExclusive() && !queue.isDurable() && (session == null || session.getConnectionModel() != protocolConnection))
{
throw body.getConnectionException(AMQConstant.NOT_ALLOWED,
"Queue " + queue.getNameShortString() + " is exclusive, but not created on this Connection.");
}
int purged = queue.delete();
if (queue.isDurable())
{
store.removeQueue(queue);
}
MethodRegistry methodRegistry = protocolConnection.getMethodRegistry();
QueueDeleteOkBody responseBody = methodRegistry.createQueueDeleteOkBody(purged);
protocolConnection.writeFrame(responseBody.generateFrame(channelId));
}
}
}
}
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