/**
*
* Copyright 2004, 2005 The Apache Software Foundation or its licensors, as applicable.
*
* Licensed 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.geronimo.console.jmsmanager.renderers;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.List;
import java.util.Map;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.Queue;
import javax.jms.QueueBrowser;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSession;
import javax.jms.Topic;
import javax.management.ObjectName;
import javax.portlet.PortletException;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;
import org.apache.geronimo.console.jmsmanager.AbstractJMSManager;
import org.apache.geronimo.j2ee.j2eeobjectnames.NameFactory;
public class ViewMessagesRenderer extends AbstractJMSManager implements
PortletRenderer {
private static final TopicListener topicListener = new TopicListener();
public String render(RenderRequest request, RenderResponse response)
throws PortletException, IOException {
List messageList = getMessageList(request, response);
request.setAttribute("messages", messageList);
return "/WEB-INF/view/jmsmanager/viewmessages.jsp";
}
public List getMessageList(RenderRequest request, RenderResponse response)
throws PortletException {
String destinationApplicationName = request
.getParameter("destinationApplicationName");
String destinationModuleName = request
.getParameter("destinationModuleName");
String destinationName = request.getParameter("destinationName");
List ret = new ArrayList();
try {
ObjectName adminObjectName = NameFactory.getComponentName(null,
null, destinationApplicationName, NameFactory.JCA_RESOURCE,
destinationModuleName, destinationName, null, baseContext);
Destination dest = (Destination) kernel.invoke(adminObjectName,
"$getResource");
if (dest instanceof Queue) {
Queue queue = (Queue) dest;
QueueConnectionFactory qConFactory = null;
QueueConnection qConnection = null;
QueueSession qSession = null;
QueueBrowser qBrowser = null;
try {
qConFactory = (QueueConnectionFactory) kernel.invoke(
ObjectName.getInstance(CONNECTION_FACTORY_NAME),
"$getResource");
qConnection = qConFactory.createQueueConnection();
qSession = qConnection.createQueueSession(false,
QueueSession.AUTO_ACKNOWLEDGE);
qBrowser = qSession.createBrowser(queue);
qConnection.start();
for (Enumeration e = qBrowser.getEnumeration(); e
.hasMoreElements();) {
Object o = e.nextElement();
ret.add(o);
}
qConnection.stop();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (qBrowser != null) {
qBrowser.close();
}
} catch (JMSException ignore) {
}
try {
if (qSession != null) {
qSession.close();
}
} catch (JMSException ignore) {
}
try {
if (qConnection != null) {
qConnection.close();
}
} catch (JMSException ignore) {
}
}
} else if (dest instanceof Topic) {
ObjectName tBrowserObjName = NameFactory.getComponentName(null,
null, destinationApplicationName,
NameFactory.JCA_RESOURCE, destinationModuleName,
destinationName, "TopicBrowser", baseContext);
ret = (List) kernel.invoke(tBrowserObjName, "getMessages");
}
} catch (Exception e) {
e.printStackTrace();
}
return ret;
}
static class TopicListener implements MessageListener {
/**
* Hashtable to hold the messages for each topic. Messages are stored as
* Message/Topic key/value pairs.
*/
private Map messagesMap = new Hashtable();
public final String name = this.toString();
public synchronized void onMessage(Message message) {
try {
Destination dest = message.getJMSDestination();
List messages = null;
if (!messagesMap.containsKey(dest)) {
register((Topic) dest);
}
messages = (List) messagesMap.get(dest);
if (!messages.contains(message)) {
messages.add(message);
}
messagesMap.put(dest, messages);
} catch (JMSException e) {
e.printStackTrace();
}
}
public void register(Topic topic) {
if (!messagesMap.containsKey(topic)) {
List messages = new ArrayList();
messagesMap.put(topic, messages);
}
}
public List getMessages(Topic topic) {
List ret;
if (messagesMap.containsKey(topic)) {
ret = (List) messagesMap.get(topic);
} else {
ret = Collections.EMPTY_LIST;
}
return Collections.unmodifiableList(ret);
}
public boolean isListeningTo(Topic topic) {
return messagesMap.containsKey(topic);
}
}
}