/*
*
* 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.server.protocol.v0_8.handler;
import org.apache.qpid.AMQException;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.framing.ExchangeBoundBody;
import org.apache.qpid.framing.ExchangeBoundOkBody;
import org.apache.qpid.framing.MethodRegistry;
import org.apache.qpid.server.exchange.ExchangeImpl;
import org.apache.qpid.server.protocol.v0_8.AMQChannel;
import org.apache.qpid.server.protocol.v0_8.AMQProtocolSession;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.protocol.v0_8.state.AMQStateManager;
import org.apache.qpid.server.protocol.v0_8.state.StateAwareMethodListener;
import org.apache.qpid.server.virtualhost.VirtualHostImpl;
/**
* @author Apache Software Foundation
*
*
*/
public class ExchangeBoundHandler implements StateAwareMethodListener<ExchangeBoundBody>
{
private static final ExchangeBoundHandler _instance = new ExchangeBoundHandler();
public static final int OK = 0;
public static final int EXCHANGE_NOT_FOUND = 1;
public static final int QUEUE_NOT_FOUND = 2;
public static final int NO_BINDINGS = 3;
public static final int QUEUE_NOT_BOUND = 4;
public static final int NO_QUEUE_BOUND_WITH_RK = 5;
public static final int SPECIFIC_QUEUE_NOT_BOUND_WITH_RK = 6;
public static ExchangeBoundHandler getInstance()
{
return _instance;
}
private ExchangeBoundHandler()
{
}
public void methodReceived(AMQStateManager stateManager, ExchangeBoundBody body, int channelId) throws AMQException
{
AMQProtocolSession session = stateManager.getProtocolSession();
VirtualHostImpl virtualHost = session.getVirtualHost();
MethodRegistry methodRegistry = session.getMethodRegistry();
final AMQChannel channel = session.getChannel(channelId);
if (channel == null)
{
throw body.getChannelNotFoundException(channelId);
}
channel.sync();
AMQShortString exchangeName = body.getExchange();
AMQShortString queueName = body.getQueue();
AMQShortString routingKey = body.getRoutingKey();
ExchangeBoundOkBody response;
if(isDefaultExchange(exchangeName))
{
if(routingKey == null)
{
if(queueName == null)
{
response = methodRegistry.createExchangeBoundOkBody(virtualHost.getQueues().isEmpty() ? NO_BINDINGS : OK, null);
}
else
{
AMQQueue queue = virtualHost.getQueue(queueName.toString());
if (queue == null)
{
response = methodRegistry.createExchangeBoundOkBody(QUEUE_NOT_FOUND, // replyCode
AMQShortString.validValueOf("Queue '" + queueName + "' not found")); // replyText
}
else
{
response = methodRegistry.createExchangeBoundOkBody(OK, null);
}
}
}
else
{
if(queueName == null)
{
response = methodRegistry.createExchangeBoundOkBody(virtualHost.getQueue(routingKey.toString()) == null ? NO_QUEUE_BOUND_WITH_RK : OK, null);
}
else
{
AMQQueue queue = virtualHost.getQueue(queueName.toString());
if (queue == null)
{
response = methodRegistry.createExchangeBoundOkBody(QUEUE_NOT_FOUND, // replyCode
AMQShortString.validValueOf("Queue '" + queueName + "' not found")); // replyText
}
else
{
response = methodRegistry.createExchangeBoundOkBody(queueName.equals(routingKey) ? OK : SPECIFIC_QUEUE_NOT_BOUND_WITH_RK, null);
}
}
}
}
else
{
ExchangeImpl exchange = virtualHost.getExchange(exchangeName.toString());
if (exchange == null)
{
response = methodRegistry.createExchangeBoundOkBody(EXCHANGE_NOT_FOUND,
AMQShortString.validValueOf("Exchange '" + exchangeName + "' not found"));
}
else if (routingKey == null)
{
if (queueName == null)
{
if (exchange.hasBindings())
{
response = methodRegistry.createExchangeBoundOkBody(OK, null);
}
else
{
response = methodRegistry.createExchangeBoundOkBody(NO_BINDINGS, // replyCode
null); // replyText
}
}
else
{
AMQQueue queue = virtualHost.getQueue(queueName.toString());
if (queue == null)
{
response = methodRegistry.createExchangeBoundOkBody(QUEUE_NOT_FOUND, // replyCode
AMQShortString.validValueOf("Queue '" + queueName + "' not found")); // replyText
}
else
{
if (exchange.isBound(queue))
{
response = methodRegistry.createExchangeBoundOkBody(OK, // replyCode
null); // replyText
}
else
{
response = methodRegistry.createExchangeBoundOkBody(QUEUE_NOT_BOUND, // replyCode
AMQShortString.validValueOf("Queue '" + queueName + "' not bound to exchange '" + exchangeName + "'")); // replyText
}
}
}
}
else if (queueName != null)
{
AMQQueue queue = virtualHost.getQueue(queueName.toString());
if (queue == null)
{
response = methodRegistry.createExchangeBoundOkBody(QUEUE_NOT_FOUND, // replyCode
AMQShortString.validValueOf("Queue '" + queueName + "' not found")); // replyText
}
else
{
String bindingKey = body.getRoutingKey() == null ? null : body.getRoutingKey().asString();
if (exchange.isBound(bindingKey, queue))
{
response = methodRegistry.createExchangeBoundOkBody(OK, // replyCode
null); // replyText
}
else
{
String message = "Queue '" + queueName + "' not bound with routing key '" +
body.getRoutingKey() + "' to exchange '" + exchangeName + "'";
response = methodRegistry.createExchangeBoundOkBody(SPECIFIC_QUEUE_NOT_BOUND_WITH_RK, // replyCode
AMQShortString.validValueOf(message)); // replyText
}
}
}
else
{
if (exchange.isBound(body.getRoutingKey() == null ? "" : body.getRoutingKey().asString()))
{
response = methodRegistry.createExchangeBoundOkBody(OK, // replyCode
null); // replyText
}
else
{
response = methodRegistry.createExchangeBoundOkBody(NO_QUEUE_BOUND_WITH_RK, // replyCode
AMQShortString.validValueOf("No queue bound with routing key '" + body.getRoutingKey() +
"' to exchange '" + exchangeName + "'")); // replyText
}
}
}
session.writeFrame(response.generateFrame(channelId));
}
protected boolean isDefaultExchange(final AMQShortString exchangeName)
{
return exchangeName == null || exchangeName.equals(AMQShortString.EMPTY_STRING);
}
}