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/*
*
* 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.framing.BasicPublishBody;
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.AMQMessage;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.registry.ApplicationRegistry;
import javax.management.JMException;
import javax.management.MBeanException;
import javax.management.openmbean.*;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
public class DestNameExchange extends AbstractExchange
{
private static final Logger _logger = Logger.getLogger(DestNameExchange.class);
/**
* Maps from queue name to queue instances
*/
private final Index _index = new Index();
/**
* MBean class implementing the management interfaces.
*/
@MBeanDescription("Management Bean for Direct Exchange")
private final class DestNameExchangeMBean extends ExchangeMBean
{
// open mbean data types for representing exchange bindings
private String[] _bindingItemNames = {"Routing Key", "Queue Names"};
private String[] _bindingItemIndexNames = {_bindingItemNames[0]};
private OpenType[] _bindingItemTypes = new OpenType[2];
private CompositeType _bindingDataType = null;
private TabularType _bindinglistDataType = null;
private TabularDataSupport _bindingList = null;
@MBeanConstructor("Creates an MBean for AMQ direct exchange")
public DestNameExchangeMBean() throws JMException
{
super();
_exchangeType = "direct";
init();
}
/**
* initialises the OpenType objects.
*/
private void init() throws OpenDataException
{
_bindingItemTypes[0] = SimpleType.STRING;
_bindingItemTypes[1] = new ArrayType(1, SimpleType.STRING);
_bindingDataType = new CompositeType("Exchange Binding", "Routing key and Queue names",
_bindingItemNames, _bindingItemNames, _bindingItemTypes);
_bindinglistDataType = new TabularType("Exchange Bindings", "Exchange Bindings for " + getName(),
_bindingDataType, _bindingItemIndexNames);
}
public TabularData bindings() throws OpenDataException
{
Map<String, List<AMQQueue>> bindings = _index.getBindingsMap();
_bindingList = new TabularDataSupport(_bindinglistDataType);
for (Map.Entry<String, List<AMQQueue>> entry : bindings.entrySet())
{
String key = entry.getKey();
List<String> queueList = new ArrayList<String>();
List<AMQQueue> queues = entry.getValue();
for (AMQQueue q : queues)
{
queueList.add(q.getName());
}
Object[] bindingItemValues = {key, queueList.toArray(new String[0])};
CompositeData bindingData = new CompositeDataSupport(_bindingDataType, _bindingItemNames, bindingItemValues);
_bindingList.put(bindingData);
}
return _bindingList;
}
public void createNewBinding(String queueName, String binding) throws JMException
{
AMQQueue queue = ApplicationRegistry.getInstance().getQueueRegistry().getQueue(queueName);
if (queue == null)
{
throw new JMException("Queue \"" + queueName + "\" is not registered with the exchange.");
}
try
{
registerQueue(binding, queue, null);
queue.bind(binding, DestNameExchange.this);
}
catch (AMQException ex)
{
throw new MBeanException(ex);
}
}
}// End of MBean class
protected ExchangeMBean createMBean() throws AMQException
{
try
{
return new DestNameExchangeMBean();
}
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 void registerQueue(String routingKey, AMQQueue queue, FieldTable args) throws AMQException
{
assert queue != null;
assert routingKey != null;
if (!_index.add(routingKey, queue))
{
_logger.debug("Queue " + queue + " is already registered with routing key " + routingKey);
}
else
{
_logger.debug("Binding queue " + queue + " with routing key " + routingKey + " to exchange " + this);
}
}
public void deregisterQueue(String routingKey, AMQQueue queue) throws AMQException
{
assert queue != null;
assert routingKey != null;
if (!_index.remove(routingKey, queue))
{
throw new AMQException("Queue " + queue + " was not registered with exchange " + this.getName() +
" with routing key " + routingKey + ". No queue was registered with that routing key");
}
}
public void route(AMQMessage payload) throws AMQException
{
BasicPublishBody publishBody = payload.getPublishBody();
final String routingKey = publishBody.routingKey;
final List<AMQQueue> queues = _index.get(routingKey);
if (queues == null || queues.isEmpty())
{
String msg = "Routing key " + routingKey + " is not known to " + this;
if (publishBody.mandatory)
{
throw new NoRouteException(msg, payload);
}
else
{
_logger.warn(msg);
}
}
else
{
if (_logger.isDebugEnabled())
{
_logger.debug("Publishing message to queue " + queues);
}
for (AMQQueue q : queues)
{
q.deliver(payload);
}
}
}
}
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