/*
*
* 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.message;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.qpid.AMQException;
import org.apache.qpid.client.AMQQueue;
import org.apache.qpid.client.AMQSession_0_8;
import org.apache.qpid.client.AMQTopic;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.framing.BasicContentHeaderProperties;
import org.apache.qpid.framing.ContentHeaderBody;
import org.apache.qpid.transport.DeliveryProperties;
import org.apache.qpid.transport.MessageProperties;
import org.apache.qpid.transport.MessageTransfer;
import javax.jms.JMSException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MessageFactoryRegistry
{
/**
* This class logger
*/
private final Logger _logger = LoggerFactory.getLogger(getClass());
private final Map<String, MessageFactory> _mimeStringToFactoryMap = new HashMap<String, MessageFactory>();
private final Map<AMQShortString, MessageFactory> _mimeShortStringToFactoryMap =
new HashMap<AMQShortString, MessageFactory>();
private final MessageFactory _default = new JMSBytesMessageFactory();
/**
* Construct a new registry with the default message factories registered
*
* @return a message factory registry
*/
public static MessageFactoryRegistry newDefaultRegistry()
{
MessageFactoryRegistry mf = new MessageFactoryRegistry();
mf.registerFactory(JMSMapMessage.MIME_TYPE, new JMSMapMessageFactory());
mf.registerFactory("text/plain", new JMSTextMessageFactory());
mf.registerFactory("text/xml", new JMSTextMessageFactory());
mf.registerFactory(JMSBytesMessage.MIME_TYPE, new JMSBytesMessageFactory());
mf.registerFactory(JMSObjectMessage.MIME_TYPE, new JMSObjectMessageFactory());
mf.registerFactory(JMSStreamMessage.MIME_TYPE, new JMSStreamMessageFactory());
mf.registerFactory(AMQPEncodedMapMessage.MIME_TYPE, new AMQPEncodedMapMessageFactory());
mf.registerFactory(AMQPEncodedListMessage.MIME_TYPE, new AMQPEncodedListMessageFactory());
mf.registerFactory(null, mf._default);
return mf;
}
public void registerFactory(String mimeType, MessageFactory mf)
{
if (mf == null)
{
throw new IllegalArgumentException("Message factory must not be null");
}
_mimeStringToFactoryMap.put(mimeType, mf);
_mimeShortStringToFactoryMap.put(new AMQShortString(mimeType), mf);
}
public MessageFactory deregisterFactory(String mimeType)
{
_mimeShortStringToFactoryMap.remove(new AMQShortString(mimeType));
return _mimeStringToFactoryMap.remove(mimeType);
}
/**
* Create a message. This looks up the MIME type from the content header and instantiates the appropriate
* concrete message type.
*
*
* @param deliveryTag the AMQ message id
* @param redelivered true if redelivered
* @param contentHeader the content header that was received
* @param bodies a list of ContentBody instances @return the message.
* @param queueDestinationCache
*@param topicDestinationCache @throws AMQException
* @throws JMSException
*/
public AbstractJMSMessage createMessage(long deliveryTag, boolean redelivered, AMQShortString exchange,
AMQShortString routingKey, ContentHeaderBody contentHeader, List bodies,
AMQSession_0_8.DestinationCache<AMQQueue> queueDestinationCache,
AMQSession_0_8.DestinationCache<AMQTopic> topicDestinationCache)
throws AMQException, JMSException
{
BasicContentHeaderProperties properties = contentHeader.getProperties();
// Get the message content type. This may be null for pure AMQP messages, but will always be set for JMS over
// AMQP. When the type is null, it can only be assumed that the message is a byte message.
AMQShortString contentTypeShortString = properties.getContentType();
contentTypeShortString = (contentTypeShortString == null) ? new AMQShortString(
JMSBytesMessage.MIME_TYPE) : contentTypeShortString;
MessageFactory mf = _mimeShortStringToFactoryMap.get(contentTypeShortString);
if (mf == null)
{
mf = _default;
}
return mf.createMessage(deliveryTag, redelivered, contentHeader, exchange, routingKey, bodies, queueDestinationCache, topicDestinationCache);
}
public AbstractJMSMessage createMessage(MessageTransfer transfer) throws AMQException, JMSException
{
MessageProperties mprop = transfer.getHeader().getMessageProperties();
String messageType = "";
if ( mprop == null || mprop.getContentType() == null)
{
_logger.debug("no message type specified, building a byte message");
messageType = JMSBytesMessage.MIME_TYPE;
}
else
{
messageType = mprop.getContentType();
}
MessageFactory mf = _mimeStringToFactoryMap.get(messageType);
if (mf == null)
{
mf = _default;
}
boolean redelivered = false;
DeliveryProperties deliverProps;
if((deliverProps = transfer.getHeader().getDeliveryProperties()) != null)
{
redelivered = deliverProps.getRedelivered();
}
return mf.createMessage(transfer.getId(),
redelivered,
mprop == null? new MessageProperties():mprop,
deliverProps == null? new DeliveryProperties():deliverProps,
transfer.getBody());
}
public AbstractJMSMessage createMessage(AMQMessageDelegateFactory delegateFactory, String mimeType) throws AMQException, JMSException
{
if (mimeType == null)
{
throw new IllegalArgumentException("Mime type must not be null");
}
MessageFactory mf = _mimeStringToFactoryMap.get(mimeType);
if (mf == null)
{
mf = _default;
}
return mf.createMessage(delegateFactory);
}
}