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package org.apache.qpid.server.handler;
/*
*
* 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.
*
*/
import org.apache.log4j.Logger;
import org.apache.qpid.AMQException;
import org.apache.qpid.framing.AMQMethodBody;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.framing.FieldTable;
import org.apache.qpid.framing.MethodRegistry;
import org.apache.qpid.framing.QueueUnbindBody;
import org.apache.qpid.framing.amqp_0_9.MethodRegistry_0_9;
import org.apache.qpid.framing.amqp_0_91.MethodRegistry_0_91;
import org.apache.qpid.protocol.AMQConstant;
import org.apache.qpid.server.AMQChannel;
import org.apache.qpid.server.exchange.Exchange;
import org.apache.qpid.server.exchange.ExchangeRegistry;
import org.apache.qpid.server.protocol.AMQProtocolSession;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.queue.QueueRegistry;
import org.apache.qpid.server.state.AMQStateManager;
import org.apache.qpid.server.state.StateAwareMethodListener;
import org.apache.qpid.server.virtualhost.VirtualHost;
public class QueueUnbindHandler implements StateAwareMethodListener<QueueUnbindBody>
{
private static final Logger _log = Logger.getLogger(QueueUnbindHandler.class);
private static final QueueUnbindHandler _instance = new QueueUnbindHandler();
public static QueueUnbindHandler getInstance()
{
return _instance;
}
private QueueUnbindHandler()
{
}
public void methodReceived(AMQStateManager stateManager, QueueUnbindBody body, int channelId) throws AMQException
{
AMQProtocolSession session = stateManager.getProtocolSession();
VirtualHost virtualHost = session.getVirtualHost();
ExchangeRegistry exchangeRegistry = virtualHost.getExchangeRegistry();
QueueRegistry queueRegistry = virtualHost.getQueueRegistry();
final AMQQueue queue;
final AMQShortString routingKey;
AMQChannel channel = session.getChannel(channelId);
if (channel == null)
{
throw body.getChannelNotFoundException(channelId);
}
if (body.getQueue() == null)
{
queue = channel.getDefaultQueue();
if (queue == null)
{
throw body.getChannelException(AMQConstant.NOT_FOUND, "No default queue defined on channel and queue was null");
}
routingKey = body.getRoutingKey() == null ? null : body.getRoutingKey().intern();
}
else
{
queue = queueRegistry.getQueue(body.getQueue());
routingKey = body.getRoutingKey() == null ? null : body.getRoutingKey().intern();
}
if (queue == null)
{
throw body.getChannelException(AMQConstant.NOT_FOUND, "Queue " + body.getQueue() + " does not exist.");
}
final Exchange exch = exchangeRegistry.getExchange(body.getExchange());
if (exch == null)
{
throw body.getChannelException(AMQConstant.NOT_FOUND, "Exchange " + body.getExchange() + " does not exist.");
}
if(virtualHost.getBindingFactory().getBinding(String.valueOf(routingKey), queue, exch, FieldTable.convertToMap(body.getArguments())) == null)
{
throw body.getChannelException(AMQConstant.NOT_FOUND,"No such binding");
}
else
{
virtualHost.getBindingFactory().removeBinding(String.valueOf(routingKey), queue, exch, FieldTable.convertToMap(body.getArguments()));
}
if (_log.isInfoEnabled())
{
_log.info("Binding queue " + queue + " to exchange " + exch + " with routing key " + routingKey);
}
final MethodRegistry registry = session.getMethodRegistry();
final AMQMethodBody responseBody;
if (registry instanceof MethodRegistry_0_9)
{
responseBody = ((MethodRegistry_0_9)registry).createQueueUnbindOkBody();
}
else if (registry instanceof MethodRegistry_0_91)
{
responseBody = ((MethodRegistry_0_91)registry).createQueueUnbindOkBody();
}
else
{
// 0-8 does not support QueueUnbind
throw new AMQException(AMQConstant.COMMAND_INVALID, "QueueUnbind not present in AMQP version: " + session.getProtocolVersion(), null);
}
channel.sync();
session.writeFrame(responseBody.generateFrame(channelId));
}
}
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