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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.protocol.v0_8.handler;
import java.security.AccessControlException;
import java.util.Map;
import org.apache.log4j.Logger;
import org.apache.qpid.AMQException;
import org.apache.qpid.exchange.ExchangeDefaults;
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.QueueBindBody;
import org.apache.qpid.protocol.AMQConstant;
import org.apache.qpid.server.exchange.ExchangeImpl;
import org.apache.qpid.server.protocol.v0_8.AMQChannel;
import org.apache.qpid.server.protocol.v0_8.AMQProtocolSession;
import org.apache.qpid.server.protocol.v0_8.state.StateAwareMethodListener;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.virtualhost.VirtualHostImpl;
public class QueueBindHandler implements StateAwareMethodListener<QueueBindBody>
{
private static final Logger _log = Logger.getLogger(QueueBindHandler.class);
private static final QueueBindHandler _instance = new QueueBindHandler();
public static QueueBindHandler getInstance()
{
return _instance;
}
private QueueBindHandler()
{
}
public void methodReceived(final AMQProtocolSession<?> connection,
QueueBindBody body,
int channelId) throws AMQException
{
VirtualHostImpl virtualHost = connection.getVirtualHost();
AMQChannel channel = connection.getChannel(channelId);
if (channel == null)
{
throw body.getChannelNotFoundException(channelId, connection.getMethodRegistry());
}
final AMQQueue queue;
final AMQShortString routingKey;
final AMQShortString queueName = body.getQueue();
if (queueName == null)
{
queue = channel.getDefaultQueue();
if (queue == null)
{
throw body.getChannelException(AMQConstant.NOT_FOUND, "No default queue defined on channel and queue was null",
connection.getMethodRegistry());
}
if (body.getRoutingKey() == null)
{
routingKey = AMQShortString.valueOf(queue.getName());
}
else
{
routingKey = body.getRoutingKey().intern();
}
}
else
{
queue = virtualHost.getQueue(queueName.toString());
routingKey = body.getRoutingKey() == null ? AMQShortString.EMPTY_STRING : body.getRoutingKey().intern();
}
if (queue == null)
{
throw body.getChannelException(AMQConstant.NOT_FOUND, "Queue " + queueName + " does not exist.",
connection.getMethodRegistry());
}
if(isDefaultExchange(body.getExchange()))
{
throw body.getConnectionException(AMQConstant.NOT_ALLOWED, "Cannot bind the queue " + queueName + " to the default exchange",
connection.getMethodRegistry());
}
final String exchangeName = body.getExchange().toString();
final ExchangeImpl exch = virtualHost.getExchange(exchangeName);
if (exch == null)
{
throw body.getChannelException(AMQConstant.NOT_FOUND, "Exchange " + exchangeName + " does not exist.",
connection.getMethodRegistry());
}
try
{
Map<String,Object> arguments = FieldTable.convertToMap(body.getArguments());
String bindingKey = String.valueOf(routingKey);
if (!exch.isBound(bindingKey, arguments, queue))
{
if(!exch.addBinding(bindingKey, queue, arguments) && ExchangeDefaults.TOPIC_EXCHANGE_CLASS.equals(exch.getType()))
{
exch.replaceBinding(bindingKey, queue, arguments);
}
}
}
catch (AccessControlException e)
{
throw body.getConnectionException(AMQConstant.ACCESS_REFUSED, e.getMessage(), connection.getMethodRegistry());
}
if (_log.isInfoEnabled())
{
_log.info("Binding queue " + queue + " to exchange " + exch + " with routing key " + routingKey);
}
if (!body.getNowait())
{
channel.sync();
MethodRegistry methodRegistry = connection.getMethodRegistry();
AMQMethodBody responseBody = methodRegistry.createQueueBindOkBody();
connection.writeFrame(responseBody.generateFrame(channelId));
}
}
protected boolean isDefaultExchange(final AMQShortString exchangeName)
{
return exchangeName == null || exchangeName.equals(AMQShortString.EMPTY_STRING);
}
}
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