/*
*
* 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.
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*/
package org.apache.qpid.server.handler;
import org.apache.log4j.Logger;
import org.apache.qpid.AMQException;
import org.apache.qpid.framing.AMQFrame;
import org.apache.qpid.framing.ExchangeDeclareBody;
import org.apache.qpid.framing.ExchangeDeclareOkBody;
import org.apache.qpid.server.exchange.Exchange;
import org.apache.qpid.server.exchange.ExchangeRegistry;
import org.apache.qpid.server.exchange.ExchangeFactory;
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;
import org.apache.qpid.server.registry.ApplicationRegistry;
public class ExchangeDeclareHandler implements StateAwareMethodListener<ExchangeDeclareBody>
{
private static final Logger _logger = Logger.getLogger(ExchangeDeclareHandler.class);
private static final ExchangeDeclareHandler _instance = new ExchangeDeclareHandler();
public static ExchangeDeclareHandler getInstance()
{
return _instance;
}
private final ExchangeFactory exchangeFactory;
private ExchangeDeclareHandler()
{
exchangeFactory = ApplicationRegistry.getInstance().getExchangeFactory();
}
public void methodReceived(AMQStateManager stateManager, QueueRegistry queueRegistry,
ExchangeRegistry exchangeRegistry, AMQProtocolSession protocolSession,
AMQMethodEvent<ExchangeDeclareBody> evt) throws AMQException
{
final ExchangeDeclareBody body = evt.getMethod();
if (_logger.isDebugEnabled())
{
_logger.debug("Request to declare exchange of type " + body.type + " with name " + body.exchange);
}
synchronized(exchangeRegistry)
{
Exchange exchange = exchangeRegistry.getExchange(body.exchange);
if (exchange == null)
{
exchange = exchangeFactory.createExchange(body.exchange, body.type, body.durable,
body.passive, body.ticket);
exchangeRegistry.registerExchange(exchange);
}
}
if(!body.nowait)
{
AMQFrame response = ExchangeDeclareOkBody.createAMQFrame(evt.getChannelId());
protocolSession.writeFrame(response);
}
}
}