/*
*
* 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.exchange;
import org.apache.log4j.Logger;
import org.apache.qpid.AMQException;
import org.apache.qpid.protocol.AMQConstant;
import org.apache.qpid.exchange.ExchangeDefaults;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.framing.FieldTable;
import org.apache.qpid.server.management.MBeanConstructor;
import org.apache.qpid.server.management.MBeanDescription;
import org.apache.qpid.server.queue.IncomingMessage;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.virtualhost.VirtualHost;
import javax.management.JMException;
import javax.management.MBeanException;
import javax.management.openmbean.CompositeData;
import javax.management.openmbean.CompositeDataSupport;
import javax.management.openmbean.OpenDataException;
import javax.management.openmbean.TabularData;
import javax.management.openmbean.TabularDataSupport;
import java.util.List;
import java.util.Map;
import java.util.ArrayList;
import java.util.concurrent.CopyOnWriteArraySet;
public class FanoutExchange extends AbstractExchange
{
private static final Logger _logger = Logger.getLogger(FanoutExchange.class);
/**
* Maps from queue name to queue instances
*/
private final CopyOnWriteArraySet<AMQQueue> _queues = new CopyOnWriteArraySet<AMQQueue>();
/**
* MBean class implementing the management interfaces.
*/
@MBeanDescription("Management Bean for Fanout Exchange")
private final class FanoutExchangeMBean extends ExchangeMBean
{
@MBeanConstructor("Creates an MBean for AMQ fanout exchange")
public FanoutExchangeMBean() throws JMException
{
super();
_exchangeType = "fanout";
init();
}
public TabularData bindings() throws OpenDataException
{
_bindingList = new TabularDataSupport(_bindinglistDataType);
for (AMQQueue queue : _queues)
{
String queueName = queue.getName().toString();
Object[] bindingItemValues = {queueName, new String[]{queueName}};
CompositeData bindingData = new CompositeDataSupport(_bindingDataType, _bindingItemNames, bindingItemValues);
_bindingList.put(bindingData);
}
return _bindingList;
}
public void createNewBinding(String queueName, String binding) throws JMException
{
AMQQueue queue = getQueueRegistry().getQueue(new AMQShortString(queueName));
if (queue == null)
{
throw new JMException("Queue \"" + queueName + "\" is not registered with the exchange.");
}
try
{
queue.bind(FanoutExchange.this, new AMQShortString(binding), null);
}
catch (AMQException ex)
{
throw new MBeanException(ex);
}
}
} // End of MBean class
protected ExchangeMBean createMBean() throws AMQException
{
try
{
return new FanoutExchange.FanoutExchangeMBean();
}
catch (JMException ex)
{
_logger.error("Exception occured in creating the direct exchange mbean", ex);
throw new AMQException("Exception occured in creating the direct exchange mbean", ex);
}
}
public static final ExchangeType<FanoutExchange> TYPE = new ExchangeType<FanoutExchange>()
{
public AMQShortString getName()
{
return ExchangeDefaults.FANOUT_EXCHANGE_CLASS;
}
public Class<FanoutExchange> getExchangeClass()
{
return FanoutExchange.class;
}
public FanoutExchange newInstance(VirtualHost host,
AMQShortString name,
boolean durable,
int ticket,
boolean autoDelete) throws AMQException
{
FanoutExchange exch = new FanoutExchange();
exch.initialise(host, name, durable, ticket, autoDelete);
return exch;
}
public AMQShortString getDefaultExchangeName()
{
return ExchangeDefaults.FANOUT_EXCHANGE_NAME;
}
};
public Map<AMQShortString, List<AMQQueue>> getBindings()
{
return null;
}
public AMQShortString getType()
{
return ExchangeDefaults.FANOUT_EXCHANGE_CLASS;
}
public void registerQueue(AMQShortString routingKey, AMQQueue queue, FieldTable args) throws AMQException
{
assert queue != null;
if (_queues.contains(queue))
{
_logger.debug("Queue " + queue + " is already registered");
}
else
{
_queues.add(queue);
_logger.debug("Binding queue " + queue + " with routing key " + routingKey + " to exchange " + this);
}
}
public void deregisterQueue(AMQShortString routingKey, AMQQueue queue, FieldTable args) throws AMQException
{
assert queue != null;
if (!_queues.remove(queue))
{
throw new AMQException(AMQConstant.NOT_FOUND, "Queue " + queue + " was not registered with exchange " + this.getName() + ". ");
}
}
public void route(IncomingMessage payload) throws AMQException
{
if (_logger.isDebugEnabled())
{
_logger.debug("Publishing message to queue " + _queues);
}
payload.enqueue(new ArrayList(_queues));
}
public boolean isBound(AMQShortString routingKey, FieldTable arguments, AMQQueue queue)
{
return isBound(routingKey, queue);
}
public boolean isBound(AMQShortString routingKey, AMQQueue queue)
{
return _queues.contains(queue);
}
public boolean isBound(AMQShortString routingKey)
{
return (_queues != null) && !_queues.isEmpty();
}
public boolean isBound(AMQQueue queue)
{
return _queues.contains(queue);
}
public boolean hasBindings()
{
return !_queues.isEmpty();
}
}