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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.amqp_1_0.jms.impl;
import org.apache.qpid.amqp_1_0.client.Message;
import org.apache.qpid.amqp_1_0.client.Receiver;
import org.apache.qpid.amqp_1_0.jms.MessageConsumer;
import org.apache.qpid.amqp_1_0.type.Binary;
import org.apache.qpid.amqp_1_0.type.UnsignedInteger;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageListener;
import javax.jms.Session;
public class MessageConsumerImpl implements MessageConsumer
{
private String _selector;
private boolean _noLocal;
private DestinationImpl _destination;
private SessionImpl _session;
private Receiver _receiver;
private Binary _lastUnackedMessage;
private MessageListener _messageListener;
MessageConsumerImpl(final Destination destination,
final SessionImpl session,
final String selector,
final boolean noLocal) throws JMSException
{
_selector = selector;
_noLocal = noLocal;
if(destination instanceof DestinationImpl)
{
_destination = (DestinationImpl) destination;
}
else if(destination != null)
{
// TODO - throw appropriate exception
}
_session = session;
_receiver = createClientReceiver();
}
protected Receiver createClientReceiver()
{
return _session.getClientSession().createReceiver(_destination.getAddress());
}
public String getMessageSelector() throws JMSException
{
return _selector;
}
public MessageListener getMessageListener()
{
return _messageListener;
}
public void setMessageListener(final MessageListener messageListener) throws JMSException
{
_messageListener = messageListener;
_session.messageListenerSet( this );
_receiver.setMessageArrivalListener(new Receiver.MessageArrivalListener()
{
public void messageArrived(final Receiver receiver)
{
_session.messageArrived(MessageConsumerImpl.this);
}
});
}
public MessageImpl receive() throws JMSException
{
return receiveImpl(-1L);
}
public MessageImpl receive(final long timeout) throws JMSException
{
// TODO - validate timeout > 0
return receiveImpl(timeout);
}
public MessageImpl receiveNoWait() throws JMSException
{
return receiveImpl(0L);
}
private MessageImpl receiveImpl(long timeout)
{
org.apache.qpid.amqp_1_0.client.Message msg = receive0(timeout);
if(msg != null)
{
preReceiveAction(msg);
}
return createJMSMessage(msg);
}
Message receive0(final long timeout)
{
return _receiver.receive(timeout);
}
void acknowledge(final org.apache.qpid.amqp_1_0.client.Message msg)
{
_receiver.acknowledge(msg.getDeliveryTag());
}
MessageImpl createJMSMessage(final org.apache.qpid.amqp_1_0.client.Message msg)
{
if(msg != null)
{
MessageFactory factory = _session.getMessageFactory();
return factory.createMessage(_destination, msg);
}
else
{
return null;
}
}
public void close() throws JMSException
{
//TODO
}
void setLastUnackedMessage(final Binary deliveryTag)
{
_lastUnackedMessage = deliveryTag;
}
void preReceiveAction(final org.apache.qpid.amqp_1_0.client.Message msg)
{
final int acknowledgeMode = _session.getAcknowledgeMode();
if(acknowledgeMode == Session.AUTO_ACKNOWLEDGE || acknowledgeMode == Session.DUPS_OK_ACKNOWLEDGE)
{
acknowledge(msg);
}
else if(acknowledgeMode == Session.CLIENT_ACKNOWLEDGE)
{
setLastUnackedMessage(msg.getDeliveryTag());
}
}
void acknowledgeAll()
{
if(_lastUnackedMessage != null)
{
_receiver.acknowledgeAll(_lastUnackedMessage);
_lastUnackedMessage = null;
}
}
public DestinationImpl getDestination()
{
return _destination;
}
public SessionImpl getSession()
{
return _session;
}
public boolean getNoLocal()
{
return _noLocal;
}
public void start()
{
_receiver.setCredit(UnsignedInteger.valueOf(100), true);
}
}
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