/**
* 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.cxf.wsn.jms;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.jms.Connection;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.wsn.AbstractPullPoint;
import org.oasis_open.docs.wsn.b_2.NotificationMessageHolderType;
import org.oasis_open.docs.wsn.b_2.Notify;
import org.oasis_open.docs.wsn.b_2.UnableToGetMessagesFaultType;
import org.oasis_open.docs.wsn.bw_2.UnableToGetMessagesFault;
import org.oasis_open.docs.wsrf.rw_2.ResourceUnknownFault;
public class JmsPullPoint extends AbstractPullPoint {
private static final Logger LOGGER = LogUtils.getL7dLogger(JmsPullPoint.class);
private JAXBContext jaxbContext;
private Connection connection;
private Session session;
private Queue queue;
private MessageProducer producer;
private MessageConsumer consumer;
public JmsPullPoint(String name) {
super(name);
try {
jaxbContext = JAXBContext.newInstance(Notify.class);
} catch (JAXBException e) {
throw new RuntimeException("Could not create PullEndpoint", e);
}
}
protected void initSession() throws JMSException {
if (session == null) {
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
queue = session.createQueue(getName());
producer = session.createProducer(queue);
consumer = session.createConsumer(queue);
}
}
@Override
protected synchronized void store(NotificationMessageHolderType messageHolder) {
try {
initSession();
Notify notify = new Notify();
notify.getNotificationMessage().add(messageHolder);
StringWriter writer = new StringWriter();
jaxbContext.createMarshaller().marshal(notify, writer);
Message message = session.createTextMessage(writer.toString());
producer.send(message);
} catch (JMSException e) {
LOGGER.log(Level.WARNING, "Error storing message", e);
if (session != null) {
try {
session.close();
} catch (JMSException inner) {
LOGGER.log(Level.FINE, "Error closing session", inner);
} finally {
session = null;
}
}
} catch (JAXBException e) {
LOGGER.log(Level.WARNING, "Error storing message", e);
}
}
@Override
protected synchronized List<NotificationMessageHolderType> getMessages(int max)
throws ResourceUnknownFault, UnableToGetMessagesFault {
try {
if (max == 0) {
max = 256;
}
initSession();
List<NotificationMessageHolderType> messages = new ArrayList<NotificationMessageHolderType>();
for (int i = 0; i < max; i++) {
Message msg = consumer.receiveNoWait();
if (msg == null) {
break;
}
TextMessage txtMsg = (TextMessage) msg;
StringReader reader = new StringReader(txtMsg.getText());
Notify notify = (Notify) jaxbContext.createUnmarshaller().unmarshal(reader);
messages.addAll(notify.getNotificationMessage());
}
return messages;
} catch (JMSException e) {
LOGGER.log(Level.INFO, "Error retrieving messages", e);
if (session != null) {
try {
session.close();
} catch (JMSException inner) {
LOGGER.log(Level.FINE, "Error closing session", inner);
} finally {
session = null;
}
}
UnableToGetMessagesFaultType fault = new UnableToGetMessagesFaultType();
throw new UnableToGetMessagesFault("Unable to retrieve messages", fault, e);
} catch (JAXBException e) {
LOGGER.log(Level.INFO, "Error retrieving messages", e);
UnableToGetMessagesFaultType fault = new UnableToGetMessagesFaultType();
throw new UnableToGetMessagesFault("Unable to retrieve messages", fault, e);
}
}
public Connection getConnection() {
return connection;
}
public void setConnection(Connection connection) {
this.connection = connection;
}
}