/*
* 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.log4j.Logger;
import org.apache.qpid.AMQException;
import org.apache.qpid.framing.BasicGetBody;
import org.apache.qpid.framing.BasicGetEmptyBody;
import org.apache.qpid.framing.MethodRegistry;
import org.apache.qpid.protocol.AMQConstant;
import org.apache.qpid.server.AMQChannel;
import org.apache.qpid.server.protocol.AMQProtocolSession;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.security.access.Permission;
import org.apache.qpid.server.state.AMQStateManager;
import org.apache.qpid.server.state.StateAwareMethodListener;
import org.apache.qpid.server.virtualhost.VirtualHost;
public class BasicGetMethodHandler implements StateAwareMethodListener<BasicGetBody>
{
private static final Logger _log = Logger.getLogger(BasicGetMethodHandler.class);
private static final BasicGetMethodHandler _instance = new BasicGetMethodHandler();
public static BasicGetMethodHandler getInstance()
{
return _instance;
}
private BasicGetMethodHandler()
{
}
public void methodReceived(AMQStateManager stateManager, BasicGetBody body, int channelId) throws AMQException
{
AMQProtocolSession session = stateManager.getProtocolSession();
VirtualHost vHost = session.getVirtualHost();
AMQChannel channel = session.getChannel(channelId);
if (channel == null)
{
throw body.getChannelNotFoundException(channelId);
}
else
{
AMQQueue queue = body.getQueue() == null ? channel.getDefaultQueue() : vHost.getQueueRegistry().getQueue(body.getQueue());
if (queue == null)
{
_log.info("No queue for '" + body.getQueue() + "'");
if(body.getQueue()!=null)
{
throw body.getConnectionException(AMQConstant.NOT_FOUND,
"No such queue, '" + body.getQueue()+ "'");
}
else
{
throw body.getConnectionException(AMQConstant.NOT_ALLOWED,
"No queue name provided, no default queue defined.");
}
}
else
{
//Perform ACLs
vHost.getAccessManager().authorise(session, Permission.CONSUME, body, queue);
if (!queue.performGet(session, channel, !body.getNoAck()))
{
MethodRegistry methodRegistry = session.getMethodRegistry();
// TODO - set clusterId
BasicGetEmptyBody responseBody = methodRegistry.createBasicGetEmptyBody(null);
session.writeFrame(responseBody.generateFrame(channelId));
}
}
}
}
}