org.apache.activemq.artemis.jms.client.ActiveMQMessageConsumer Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/**
* 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.activemq.artemis.jms.client;
import javax.jms.IllegalStateException;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.Queue;
import javax.jms.QueueReceiver;
import javax.jms.Session;
import javax.jms.Topic;
import javax.jms.TopicSubscriber;
import org.apache.activemq.artemis.api.core.ActiveMQException;
import org.apache.activemq.artemis.api.core.SimpleString;
import org.apache.activemq.artemis.api.core.client.ClientConsumer;
import org.apache.activemq.artemis.api.core.client.ClientMessage;
import org.apache.activemq.artemis.api.core.client.MessageHandler;
import org.apache.activemq.artemis.api.jms.ActiveMQJMSConstants;
/**
* ActiveMQ Artemis implementation of a JMS MessageConsumer.
*/
public final class ActiveMQMessageConsumer implements QueueReceiver, TopicSubscriber
{
private final ClientConsumer consumer;
private MessageListener listener;
private MessageHandler coreListener;
private final ActiveMQConnection connection;
private final ActiveMQSession session;
private final int ackMode;
private final boolean noLocal;
private final ActiveMQDestination destination;
private final String selector;
private final SimpleString autoDeleteQueueName;
// Constructors --------------------------------------------------
protected ActiveMQMessageConsumer(final ActiveMQConnection connection,
final ActiveMQSession session,
final ClientConsumer consumer,
final boolean noLocal,
final ActiveMQDestination destination,
final String selector,
final SimpleString autoDeleteQueueName) throws JMSException
{
this.connection = connection;
this.session = session;
this.consumer = consumer;
ackMode = session.getAcknowledgeMode();
this.noLocal = noLocal;
this.destination = destination;
this.selector = selector;
this.autoDeleteQueueName = autoDeleteQueueName;
}
// MessageConsumer implementation --------------------------------
public String getMessageSelector() throws JMSException
{
checkClosed();
return selector;
}
public MessageListener getMessageListener() throws JMSException
{
checkClosed();
return listener;
}
public void setMessageListener(final MessageListener listener) throws JMSException
{
this.listener = listener;
coreListener = listener == null ? null : new JMSMessageListenerWrapper(connection, session, consumer, listener, ackMode);
try
{
consumer.setMessageHandler(coreListener);
}
catch (ActiveMQException e)
{
throw JMSExceptionHelper.convertFromActiveMQException(e);
}
}
public Message receive() throws JMSException
{
return getMessage(0, false);
}
public Message receive(final long timeout) throws JMSException
{
return getMessage(timeout, false);
}
public Message receiveNoWait() throws JMSException
{
return getMessage(0, true);
}
public void close() throws JMSException
{
try
{
consumer.close();
if (autoDeleteQueueName != null)
{
// If non durable subscriber need to delete subscription too
session.deleteQueue(autoDeleteQueueName);
}
session.removeConsumer(this);
}
catch (ActiveMQException e)
{
throw JMSExceptionHelper.convertFromActiveMQException(e);
}
}
// QueueReceiver implementation ----------------------------------
public Queue getQueue() throws JMSException
{
checkClosed();
return (Queue)destination;
}
// TopicSubscriber implementation --------------------------------
public Topic getTopic() throws JMSException
{
checkClosed();
return (Topic)destination;
}
public boolean getNoLocal() throws JMSException
{
checkClosed();
return noLocal;
}
// Public --------------------------------------------------------
@Override
public String toString()
{
return "ActiveMQMessageConsumer[" + consumer + "]";
}
public boolean isClosed()
{
return consumer.isClosed();
}
// Package protected ---------------------------------------------
// Protected -----------------------------------------------------
// Private -------------------------------------------------------
private void checkClosed() throws JMSException
{
if (consumer.isClosed() || session.getCoreSession().isClosed())
{
throw new IllegalStateException("Consumer is closed");
}
}
private ActiveMQMessage getMessage(final long timeout, final boolean noWait) throws JMSException
{
try
{
ClientMessage coreMessage;
if (noWait)
{
coreMessage = consumer.receiveImmediate();
}
else
{
coreMessage = consumer.receive(timeout);
}
ActiveMQMessage jmsMsg = null;
if (coreMessage != null)
{
boolean needSession =
ackMode == Session.CLIENT_ACKNOWLEDGE || ackMode == ActiveMQJMSConstants.INDIVIDUAL_ACKNOWLEDGE;
jmsMsg = ActiveMQMessage.createMessage(coreMessage, needSession ? session.getCoreSession() : null);
jmsMsg.doBeforeReceive();
// We Do the ack after doBeforeRecive, as in the case of large messages, this may fail so we don't want messages redelivered
// https://issues.jboss.org/browse/JBPAPP-6110
if (session.getAcknowledgeMode() == ActiveMQJMSConstants.INDIVIDUAL_ACKNOWLEDGE)
{
jmsMsg.setIndividualAcknowledge();
}
else
{
coreMessage.acknowledge();
}
}
return jmsMsg;
}
catch (ActiveMQException e)
{
throw JMSExceptionHelper.convertFromActiveMQException(e);
}
}
// Inner classes -------------------------------------------------
}