broker/src/org/apache/qpid/server/handler/ChannelOpenHandler.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.handler;

import org.apache.qpid.AMQException;
import org.apache.qpid.framing.AMQFrame;
import org.apache.qpid.framing.ChannelOpenBody;
import org.apache.qpid.framing.ChannelOpenOkBody;
import org.apache.qpid.server.AMQChannel;
import org.apache.qpid.server.registry.ApplicationRegistry;
import org.apache.qpid.server.registry.IApplicationRegistry;
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.QueueRegistry;
import org.apache.qpid.server.state.AMQStateManager;
import org.apache.qpid.server.state.StateAwareMethodListener;

public class ChannelOpenHandler implements StateAwareMethodListener<ChannelOpenBody>
{
    private static ChannelOpenHandler _instance = new ChannelOpenHandler();

    public static ChannelOpenHandler getInstance()
    {
        return _instance;
    }

    private ChannelOpenHandler()
    {
    }

    public void methodReceived(AMQStateManager stateManager, QueueRegistry queueRegistry,
                               ExchangeRegistry exchangeRegistry, AMQProtocolSession protocolSession,
                               AMQMethodEvent<ChannelOpenBody> evt) throws AMQException
    {        
        IApplicationRegistry registry = ApplicationRegistry.getInstance();
        final AMQChannel channel = new AMQChannel(evt.getChannelId(), registry.getMessageStore(),
                                                  exchangeRegistry);
        protocolSession.addChannel(channel);
        AMQFrame response = ChannelOpenOkBody.createAMQFrame(evt.getChannelId());
        protocolSession.writeFrame(response);
    }
}