/**
* 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.pool;
import java.io.Serializable;
import java.util.Iterator;
import java.util.concurrent.CopyOnWriteArrayList;
import javax.jms.BytesMessage;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MapMessage;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.ObjectMessage;
import javax.jms.Queue;
import javax.jms.QueueBrowser;
import javax.jms.QueueReceiver;
import javax.jms.QueueSender;
import javax.jms.QueueSession;
import javax.jms.StreamMessage;
import javax.jms.TemporaryQueue;
import javax.jms.TemporaryTopic;
import javax.jms.TextMessage;
import javax.jms.Topic;
import javax.jms.TopicPublisher;
import javax.jms.TopicSession;
import javax.jms.TopicSubscriber;
import org.apache.activemq.ActiveMQMessageProducer;
import org.apache.activemq.ActiveMQQueueSender;
import org.apache.activemq.ActiveMQSession;
import org.apache.activemq.ActiveMQTopicPublisher;
import org.apache.activemq.AlreadyClosedException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* @version $Revision: 1.1 $
*/
public class PooledSession implements TopicSession, QueueSession {
private static final transient Log LOG = LogFactory.getLog(PooledSession.class);
private ActiveMQSession session;
private SessionPool sessionPool;
private ActiveMQMessageProducer messageProducer;
private ActiveMQQueueSender queueSender;
private ActiveMQTopicPublisher topicPublisher;
private boolean transactional = true;
private boolean ignoreClose;
private final CopyOnWriteArrayList<MessageConsumer> consumers = new CopyOnWriteArrayList<MessageConsumer>();
private final CopyOnWriteArrayList<QueueBrowser> browsers = new CopyOnWriteArrayList<QueueBrowser>();
public PooledSession(ActiveMQSession aSession, SessionPool sessionPool) {
this.session = aSession;
this.sessionPool = sessionPool;
this.transactional = session.isTransacted();
}
protected boolean isIgnoreClose() {
return ignoreClose;
}
protected void setIgnoreClose(boolean ignoreClose) {
this.ignoreClose = ignoreClose;
}
public void close() throws JMSException {
if (!ignoreClose) {
// TODO a cleaner way to reset??
// lets reset the session
getSession().setMessageListener(null);
// Close any consumers and browsers that may have been created.
for (Iterator<MessageConsumer> iter = consumers.iterator(); iter.hasNext();) {
MessageConsumer consumer = iter.next();
consumer.close();
}
consumers.clear();
for (Iterator<QueueBrowser> iter = browsers.iterator(); iter.hasNext();) {
QueueBrowser browser = iter.next();
browser.close();
}
browsers.clear();
// maybe do a rollback?
if (transactional) {
try {
getSession().rollback();
} catch (JMSException e) {
LOG.warn("Caught exception trying rollback() when putting session back into the pool: " + e, e);
// lets close the session and not put the session back into
// the pool
try {
session.close();
} catch (JMSException e1) {
LOG.trace("Ignoring exception as discarding session: " + e1, e1);
}
session = null;
return;
}
}
sessionPool.returnSession(this);
}
}
public void commit() throws JMSException {
getSession().commit();
}
public BytesMessage createBytesMessage() throws JMSException {
return getSession().createBytesMessage();
}
public MapMessage createMapMessage() throws JMSException {
return getSession().createMapMessage();
}
public Message createMessage() throws JMSException {
return getSession().createMessage();
}
public ObjectMessage createObjectMessage() throws JMSException {
return getSession().createObjectMessage();
}
public ObjectMessage createObjectMessage(Serializable serializable) throws JMSException {
return getSession().createObjectMessage(serializable);
}
public Queue createQueue(String s) throws JMSException {
return getSession().createQueue(s);
}
public StreamMessage createStreamMessage() throws JMSException {
return getSession().createStreamMessage();
}
public TemporaryQueue createTemporaryQueue() throws JMSException {
return getSession().createTemporaryQueue();
}
public TemporaryTopic createTemporaryTopic() throws JMSException {
return getSession().createTemporaryTopic();
}
public void unsubscribe(String s) throws JMSException {
getSession().unsubscribe(s);
}
public TextMessage createTextMessage() throws JMSException {
return getSession().createTextMessage();
}
public TextMessage createTextMessage(String s) throws JMSException {
return getSession().createTextMessage(s);
}
public Topic createTopic(String s) throws JMSException {
return getSession().createTopic(s);
}
public int getAcknowledgeMode() throws JMSException {
return getSession().getAcknowledgeMode();
}
public boolean getTransacted() throws JMSException {
return getSession().getTransacted();
}
public void recover() throws JMSException {
getSession().recover();
}
public void rollback() throws JMSException {
getSession().rollback();
}
public void run() {
if (session != null) {
session.run();
}
}
// Consumer related methods
// -------------------------------------------------------------------------
public QueueBrowser createBrowser(Queue queue) throws JMSException {
return addQueueBrowser(getSession().createBrowser(queue));
}
public QueueBrowser createBrowser(Queue queue, String selector) throws JMSException {
return addQueueBrowser(getSession().createBrowser(queue, selector));
}
public MessageConsumer createConsumer(Destination destination) throws JMSException {
return addConsumer(getSession().createConsumer(destination));
}
public MessageConsumer createConsumer(Destination destination, String selector) throws JMSException {
return addConsumer(getSession().createConsumer(destination, selector));
}
public MessageConsumer createConsumer(Destination destination, String selector, boolean noLocal) throws JMSException {
return addConsumer(getSession().createConsumer(destination, selector, noLocal));
}
public TopicSubscriber createDurableSubscriber(Topic topic, String selector) throws JMSException {
return addTopicSubscriber(getSession().createDurableSubscriber(topic, selector));
}
public TopicSubscriber createDurableSubscriber(Topic topic, String name, String selector, boolean noLocal) throws JMSException {
return addTopicSubscriber(getSession().createDurableSubscriber(topic, name, selector, noLocal));
}
public MessageListener getMessageListener() throws JMSException {
return getSession().getMessageListener();
}
public void setMessageListener(MessageListener messageListener) throws JMSException {
getSession().setMessageListener(messageListener);
}
public TopicSubscriber createSubscriber(Topic topic) throws JMSException {
return addTopicSubscriber(getSession().createSubscriber(topic));
}
public TopicSubscriber createSubscriber(Topic topic, String selector, boolean local) throws JMSException {
return addTopicSubscriber(getSession().createSubscriber(topic, selector, local));
}
public QueueReceiver createReceiver(Queue queue) throws JMSException {
return addQueueReceiver(getSession().createReceiver(queue));
}
public QueueReceiver createReceiver(Queue queue, String selector) throws JMSException {
return addQueueReceiver(getSession().createReceiver(queue, selector));
}
// Producer related methods
// -------------------------------------------------------------------------
public MessageProducer createProducer(Destination destination) throws JMSException {
return new PooledProducer(getMessageProducer(), destination);
}
public QueueSender createSender(Queue queue) throws JMSException {
return new PooledQueueSender(getQueueSender(), queue);
}
public TopicPublisher createPublisher(Topic topic) throws JMSException {
return new PooledTopicPublisher(getTopicPublisher(), topic);
}
// Implementation methods
// -------------------------------------------------------------------------
protected ActiveMQSession getSession() throws AlreadyClosedException {
if (session == null) {
throw new AlreadyClosedException("The session has already been closed");
}
return session;
}
public ActiveMQMessageProducer getMessageProducer() throws JMSException {
if (messageProducer == null) {
messageProducer = (ActiveMQMessageProducer)getSession().createProducer(null);
}
return messageProducer;
}
public ActiveMQQueueSender getQueueSender() throws JMSException {
if (queueSender == null) {
queueSender = (ActiveMQQueueSender)getSession().createSender(null);
}
return queueSender;
}
public ActiveMQTopicPublisher getTopicPublisher() throws JMSException {
if (topicPublisher == null) {
topicPublisher = (ActiveMQTopicPublisher)getSession().createPublisher(null);
}
return topicPublisher;
}
private QueueBrowser addQueueBrowser(QueueBrowser browser) {
browsers.add(browser);
return browser;
}
private MessageConsumer addConsumer(MessageConsumer consumer) {
consumers.add(consumer);
return consumer;
}
private TopicSubscriber addTopicSubscriber(TopicSubscriber subscriber) {
consumers.add(subscriber);
return subscriber;
}
private QueueReceiver addQueueReceiver(QueueReceiver receiver) {
consumers.add(receiver);
return receiver;
}
public String toString() {
return "PooledSession { " + session + " }";
}
}