/*
*
* 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.client.handler;
import org.apache.qpid.AMQConnectionClosedException;
import org.apache.qpid.AMQException;
import org.apache.qpid.client.AMQAuthenticationException;
import org.apache.qpid.client.protocol.AMQProtocolSession;
import org.apache.qpid.client.state.AMQState;
import org.apache.qpid.client.state.AMQStateManager;
import org.apache.qpid.client.state.StateAwareMethodListener;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.framing.ConnectionCloseBody;
import org.apache.qpid.framing.ConnectionCloseOkBody;
import org.apache.qpid.protocol.AMQConstant;
import org.apache.qpid.protocol.AMQMethodEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ConnectionCloseMethodHandler implements StateAwareMethodListener<ConnectionCloseBody>
{
private static final Logger _logger = LoggerFactory.getLogger(ConnectionCloseMethodHandler.class);
private static ConnectionCloseMethodHandler _handler = new ConnectionCloseMethodHandler();
public static ConnectionCloseMethodHandler getInstance()
{
return _handler;
}
private ConnectionCloseMethodHandler()
{ }
public void methodReceived(AMQStateManager stateManager, ConnectionCloseBody method, int channelId)
throws AMQException
{
_logger.info("ConnectionClose frame received");
final AMQProtocolSession session = stateManager.getProtocolSession();
// does it matter
// stateManager.changeState(AMQState.CONNECTION_CLOSING);
AMQConstant errorCode = AMQConstant.getConstant(method.getReplyCode());
AMQShortString reason = method.getReplyText();
try
{
ConnectionCloseOkBody closeOkBody = session.getMethodRegistry().createConnectionCloseOkBody();
// TODO: check whether channel id of zero is appropriate
// Be aware of possible changes to parameter order as versions change.
session.writeFrame(closeOkBody.generateFrame(0));
if (errorCode != AMQConstant.REPLY_SUCCESS)
{
if (errorCode == AMQConstant.NOT_ALLOWED || (errorCode == AMQConstant.ACCESS_REFUSED))
{
_logger.info("Error :" + errorCode +":"+ Thread.currentThread().getName());
// todo ritchiem : Why do this here when it is going to be done in the finally block?
session.closeProtocolSession();
// todo this is a bit of a fudge (could be conssidered such as each new connection needs a new state manager or at least a fresh state.
stateManager.changeState(AMQState.CONNECTION_NOT_STARTED);
throw new AMQAuthenticationException(errorCode, (reason == null) ? null : reason.toString());
}
else
{
_logger.info("Connection close received with error code " + errorCode);
throw new AMQConnectionClosedException(errorCode, "Error: " + reason);
}
}
}
finally
{
// this actually closes the connection in the case where it is not an error.
session.closeProtocolSession();
// ritchiem: Doing this though will cause any waiting connection start to be released without being able to
// see what the cause was.
stateManager.changeState(AMQState.CONNECTION_CLOSED);
}
}
}