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package org.apache.qpid.server.handler;
import org.apache.log4j.Logger;
import org.apache.qpid.framing.*;
import org.apache.qpid.framing.amqp_0_9.MethodRegistry_0_9;
import org.apache.qpid.server.state.StateAwareMethodListener;
import org.apache.qpid.server.state.AMQStateManager;
import org.apache.qpid.server.protocol.AMQProtocolSession;
import org.apache.qpid.server.virtualhost.VirtualHost;
import org.apache.qpid.server.exchange.ExchangeRegistry;
import org.apache.qpid.server.exchange.Exchange;
import org.apache.qpid.server.queue.QueueRegistry;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.AMQChannel;
import org.apache.qpid.server.security.access.Permission;
import org.apache.qpid.AMQException;
import org.apache.qpid.AMQInvalidRoutingKeyException;
import org.apache.qpid.protocol.AMQConstant;
public class QueueUnbindHandler implements StateAwareMethodListener<QueueUnbindBody>
{
private static final Logger _log = Logger.getLogger(QueueUnbindHandler.class);
private static final QueueUnbindHandler _instance = new QueueUnbindHandler();
public static QueueUnbindHandler getInstance()
{
return _instance;
}
private QueueUnbindHandler()
{
}
public void methodReceived(AMQStateManager stateManager, QueueUnbindBody body, int channelId) throws AMQException
{
AMQProtocolSession session = stateManager.getProtocolSession();
VirtualHost virtualHost = session.getVirtualHost();
ExchangeRegistry exchangeRegistry = virtualHost.getExchangeRegistry();
QueueRegistry queueRegistry = virtualHost.getQueueRegistry();
final AMQQueue queue;
final AMQShortString routingKey;
if (body.getQueue() == null)
{
AMQChannel channel = session.getChannel(channelId);
if (channel == null)
{
throw body.getChannelNotFoundException(channelId);
}
queue = channel.getDefaultQueue();
if (queue == null)
{
throw body.getConnectionException(AMQConstant.NOT_FOUND, "No default queue defined on channel and queue was null");
}
routingKey = body.getRoutingKey() == null ? null : body.getRoutingKey().intern();
}
else
{
queue = queueRegistry.getQueue(body.getQueue());
routingKey = body.getRoutingKey() == null ? null : body.getRoutingKey().intern();
}
if (queue == null)
{
throw body.getConnectionException(AMQConstant.NOT_FOUND, "Queue " + body.getQueue() + " does not exist.");
}
final Exchange exch = exchangeRegistry.getExchange(body.getExchange());
if (exch == null)
{
throw body.getChannelException(AMQConstant.NOT_FOUND, "Exchange " + body.getExchange() + " does not exist.");
}
//Perform ACLs
virtualHost.getAccessManager().authorise(session, Permission.UNBIND, body, queue);
try
{
queue.unBind(exch, routingKey, body.getArguments());
}
catch (AMQInvalidRoutingKeyException rke)
{
throw body.getChannelException(AMQConstant.INVALID_ROUTING_KEY, routingKey.toString());
}
catch (AMQException e)
{
if(e.getErrorCode() == AMQConstant.NOT_FOUND)
{
throw body.getConnectionException(AMQConstant.NOT_FOUND,e.getMessage(),e);
}
throw body.getChannelException(AMQConstant.CHANNEL_ERROR, e.toString());
}
if (_log.isInfoEnabled())
{
_log.info("Binding queue " + queue + " to exchange " + exch + " with routing key " + routingKey);
}
MethodRegistry_0_9 methodRegistry = (MethodRegistry_0_9) session.getMethodRegistry();
AMQMethodBody responseBody = methodRegistry.createQueueUnbindOkBody();
session.writeFrame(responseBody.generateFrame(channelId));
}
}
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