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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.cluster.handler;
import org.apache.qpid.server.state.StateAwareMethodListener;
import org.apache.qpid.server.state.AMQStateManager;
import org.apache.qpid.server.queue.QueueRegistry;
import org.apache.qpid.server.exchange.ExchangeRegistry;
import org.apache.qpid.server.protocol.AMQProtocolSession;
import org.apache.qpid.server.protocol.AMQMethodEvent;
import org.apache.qpid.server.cluster.util.LogMessage;
import org.apache.qpid.AMQException;
import org.apache.qpid.framing.AMQMethodBody;
import org.apache.qpid.framing.QueueDeclareBody;
import org.apache.qpid.framing.QueueBindBody;
import org.apache.qpid.framing.QueueDeleteBody;
import org.apache.qpid.framing.BasicConsumeBody;
import org.apache.log4j.Logger;
import java.util.Map;
import java.util.HashMap;
/**
* Maintains the default queue names for a channel, and alters subsequent frames where necessary
* to use this (i.e. when no queue is explictly specified).
*
*/
class ChannelQueueManager
{
private static final Logger _logger = Logger.getLogger(ChannelQueueManager.class);
private final Map<Integer, String> _channelQueues = new HashMap<Integer, String>();
ClusterMethodHandler<QueueDeclareBody> createQueueDeclareHandler()
{
return new QueueDeclareHandler();
}
ClusterMethodHandler<QueueDeleteBody> createQueueDeleteHandler()
{
return new QueueDeleteHandler();
}
ClusterMethodHandler<QueueBindBody> createQueueBindHandler()
{
return new QueueBindHandler();
}
ClusterMethodHandler<BasicConsumeBody> createBasicConsumeHandler()
{
return new BasicConsumeHandler();
}
private void set(int channel, String queue)
{
_channelQueues.put(channel, queue);
_logger.info(new LogMessage("Set default queue for {0} to {1}", channel, queue));
}
private String get(int channel)
{
String queue = _channelQueues.get(channel);
_logger.info(new LogMessage("Default queue for {0} is {1}", channel, queue));
return queue;
}
private class QueueDeclareHandler extends ClusterMethodHandler<QueueDeclareBody>
{
protected void peer(AMQStateManager stateMgr, QueueRegistry queues, ExchangeRegistry exchanges, AMQProtocolSession session, AMQMethodEvent<QueueDeclareBody> evt) throws AMQException
{
}
protected void client(AMQStateManager stateMgr, QueueRegistry queues, ExchangeRegistry exchanges, AMQProtocolSession session, AMQMethodEvent<QueueDeclareBody> evt) throws AMQException
{
set(evt.getChannelId(), evt.getMethod().queue);
}
}
private class QueueBindHandler extends ClusterMethodHandler<QueueBindBody>
{
protected void peer(AMQStateManager stateMgr, QueueRegistry queues, ExchangeRegistry exchanges, AMQProtocolSession session, AMQMethodEvent<QueueBindBody> evt) throws AMQException
{
}
protected void client(AMQStateManager stateMgr, QueueRegistry queues, ExchangeRegistry exchanges, AMQProtocolSession session, AMQMethodEvent<QueueBindBody> evt) throws AMQException
{
if(evt.getMethod().queue == null)
{
evt.getMethod().queue = get(evt.getChannelId());
}
}
}
private class QueueDeleteHandler extends ClusterMethodHandler<QueueDeleteBody>
{
protected void peer(AMQStateManager stateMgr, QueueRegistry queues, ExchangeRegistry exchanges, AMQProtocolSession session, AMQMethodEvent<QueueDeleteBody> evt) throws AMQException
{
}
protected void client(AMQStateManager stateMgr, QueueRegistry queues, ExchangeRegistry exchanges, AMQProtocolSession session, AMQMethodEvent<QueueDeleteBody> evt) throws AMQException
{
if(evt.getMethod().queue == null)
{
evt.getMethod().queue = get(evt.getChannelId());
}
}
}
private class BasicConsumeHandler extends ClusterMethodHandler<BasicConsumeBody>
{
protected void peer(AMQStateManager stateMgr, QueueRegistry queues, ExchangeRegistry exchanges, AMQProtocolSession session, AMQMethodEvent<BasicConsumeBody> evt) throws AMQException
{
}
protected void client(AMQStateManager stateMgr, QueueRegistry queues, ExchangeRegistry exchanges, AMQProtocolSession session, AMQMethodEvent<BasicConsumeBody> evt) throws AMQException
{
if(evt.getMethod().queue == null)
{
evt.getMethod().queue = get(evt.getChannelId());
}
}
}
}
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