/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.test.remoting.detection.jndi;
import org.jboss.logging.Logger;
import org.jboss.remoting.Client;
import org.jboss.remoting.InvokerLocator;
import org.jboss.remoting.detection.jndi.JNDIDetector;
import org.jboss.remoting.network.NetworkNotification;
import org.jboss.remoting.network.NetworkRegistry;
import javax.management.MBeanServer;
import javax.management.MBeanServerFactory;
import javax.management.Notification;
import javax.management.NotificationListener;
import javax.management.ObjectName;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.util.Map;
import java.util.HashMap;
import junit.framework.TestCase;
/**
* @author <a href="mailto:telrod@e2technologies.net">Tom Elrod</a>
* @author <a href="mailto:mazz@jboss.com">John Mazzitelli</a>
* @author <a href="mailto:ron.sigal@jboss.com">Ron Sigal</a>
*/
public class RestartTestClient extends TestCase implements NotificationListener
{
private static Logger log = Logger.getLogger(RestartTestClient.class);
private int detectorPort = 1099;
private String contextFactory = "org.jnp.interfaces.NamingContextFactory";
private String urlPackage = "org.jboss.naming:org.jnp.interfaces";
protected JNDIDetector detector;
protected int serversDetected;
protected boolean invocationSucceeded;
protected Object lock = new Object();
protected boolean notified;
/**
* Sets up NetworkRegistry and JNDIDetector so we can listen for any additions
* or removals of remoting servers on the network.
*
* @throws Exception
*/
public void setUp() throws Exception
{
// we need an MBeanServer to store our network registry and jndi detector services
MBeanServer server = MBeanServerFactory.createMBeanServer();
// the registry will house all remoting servers discovered
NetworkRegistry registry = NetworkRegistry.getInstance();
server.registerMBean(registry, new ObjectName("remoting:type=NetworkRegistry"));
log.info("NetworkRegistry has been created");
// register class as listener, so know when new server found
registry.addNotificationListener(this, null, null);
log.info("NetworkRegistry has added the client as a listener");
String detectorHost = InetAddress.getLocalHost().getHostName();
// jndi detector will detect new network registries that come online
detector = new JNDIDetector(getConfiguration());
// set config info for detector and start it.
detector.setPort(detectorPort);
detector.setHost(detectorHost);
detector.setContextFactory(contextFactory);
detector.setURLPackage(urlPackage);
server.registerMBean(detector, new ObjectName("remoting:type=JNDIDetector"));
detector.start();
log.info("JNDIDetector has been created and is listening for new NetworkRegistries to come online");
}
public void tearDown() throws Exception
{
detector.stop();
}
public void testDetections()
{
try
{
String host = InetAddress.getLocalHost().getHostName();
Socket s = null;
for (int i = 0; i < 5; i++)
{
try
{
s = new Socket(host, RestartTestServer.syncPort);
break;
}
catch (Exception e)
{
log.info("Unable to connect to " + host + ":" + RestartTestServer.syncPort);
log.info("Will try again");
try
{
Thread.sleep(2000);
}
catch (InterruptedException ignored) {}
}
}
InputStream is = s.getInputStream();
OutputStream os = s.getOutputStream();
// Wait until server has been started.
is.read();
waitOnDetection();
assertEquals(1, serversDetected);
assertTrue(invocationSucceeded);
log.info("PASSED first detection test");
invocationSucceeded = false;
// Tell server to shut down.
os.write(5);
waitOnDetection();
assertEquals(0, serversDetected);
log.info("PASSED second detection test");
// Tell server to restart.
os.write(7);
waitOnDetection();
assertEquals(1, serversDetected);
assertTrue(invocationSucceeded);
log.info("PASSED third detection test");
// Tell server test is over.
os.write(9);
}
catch (Exception e)
{
log.error(e);
e.printStackTrace();
fail();
}
}
/**
* Callback method from the broadcaster MBean this listener implementation is registered to. When a new server
* is detected, a welcome message will immediately be sent to the newly discovered server.
*
* @param notification the notification object
* @param handback the handback object given to the broadcaster upon listener registration
*/
public void handleNotification(Notification notification, Object handback)
{
try
{
// check to see if network notification
if(notification instanceof NetworkNotification)
{
log.info("GOT A NETWORK-REGISTRY NOTIFICATION: " + notification.getType());
NetworkNotification networkNotification = (NetworkNotification) notification;
if(NetworkNotification.SERVER_ADDED.equals(networkNotification.getType()))
{ // notification is for new servers being added
log.info("New server(s) have been detected - getting locators and sending welcome messages");
InvokerLocator[] locators = networkNotification.getLocator();
for(int x = 0; x < locators.length; x++)
{
try
{
serversDetected++;
// get the new found server's locator and invoke a call
InvokerLocator newServerLocator = locators[x];
log.info("detected: " + newServerLocator);
invocationSucceeded = false;
makeInvocation(newServerLocator.getLocatorURI());
invocationSucceeded = true;
}
catch(Throwable throwable)
{
throwable.printStackTrace();
}
}
}
else if(NetworkNotification.SERVER_REMOVED.equals(networkNotification.getType()))
{ // notification is for old servers that have gone down
InvokerLocator[] locators = networkNotification.getLocator();
for(int x = 0; x < locators.length; x++)
{
serversDetected--;
log.info("It has been detected that a server has gone down with a locator of: " + locators[x]);
}
}
}
return;
}
finally
{
notifyDetection();
}
}
protected void waitOnDetection() throws InterruptedException
{
synchronized (lock)
{
try
{
if (notified)
return;
lock.wait();
}
finally
{
notified = false;
}
}
}
protected void notifyDetection()
{
synchronized (lock)
{
notified = true;
lock.notify();
}
}
/**
* Make call on remoting server based on locator uri provided.
*
* @param locatorURI the URI of the remote server we want to send the message to
* @throws Throwable
*/
public void makeInvocation(String locatorURI) throws Throwable
{
InvokerLocator locator = new InvokerLocator(locatorURI);
log.info("Sending welcome message to remoting server with locator uri of: " + locatorURI);
Client remotingClient = new Client(locator, getConfiguration());
remotingClient.connect();
Object response = remotingClient.invoke("Welcome Aboard!", null);
log.info("The newly discovered server sent this response to our welcome message: " + response);
remotingClient.disconnect();
return;
}
/**
* @return configuration map for JNDIDetector
*/
protected Map getConfiguration()
{
return new HashMap();
}
}