cluster/src/org/apache/qpid/server/cluster/handler/RemoteCancelHandler.java


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/*
 *
 * Copyright (c) 2006 The Apache Software Foundation
 *
 * Licensed 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.log4j.Logger;
import org.apache.qpid.AMQException;
import org.apache.qpid.framing.BasicCancelBody;
import org.apache.qpid.server.cluster.ClusteredProtocolSession;
import org.apache.qpid.server.exchange.ExchangeRegistry;
import org.apache.qpid.server.protocol.AMQMethodEvent;
import org.apache.qpid.server.protocol.AMQProtocolSession;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.queue.ClusteredQueue;
import org.apache.qpid.server.queue.QueueRegistry;
import org.apache.qpid.server.state.AMQStateManager;
import org.apache.qpid.server.state.StateAwareMethodListener;

public class RemoteCancelHandler implements StateAwareMethodListener<BasicCancelBody>
{
    private final Logger _logger = Logger.getLogger(RemoteCancelHandler.class);

    public void methodReceived(AMQStateManager stateMgr, QueueRegistry queues, ExchangeRegistry exchanges, AMQProtocolSession session, AMQMethodEvent<BasicCancelBody> evt) throws AMQException
    {
        //By convention, consumers setup between brokers use the queue name as the consumer tag:
        AMQQueue queue = queues.getQueue(evt.getMethod().consumerTag);
        if (queue instanceof ClusteredQueue)
        {
            ((ClusteredQueue) queue).removeRemoteSubscriber(ClusteredProtocolSession.getSessionPeer(session));
        }
        else
        {
            _logger.warn("Got remote cancel request for non-clustered queue: " + queue);
        }
    }
}