/*
* 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.
*/
/*
* Created on Oct 4, 2005
*/
package org.jboss.remoting.samples.multiplex.invoker;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.management.MBeanServer;
import org.jboss.remoting.InvocationRequest;
import org.jboss.remoting.InvokerLocator;
import org.jboss.remoting.ServerInvocationHandler;
import org.jboss.remoting.ServerInvoker;
import org.jboss.remoting.callback.Callback;
import org.jboss.remoting.callback.HandleCallbackException;
import org.jboss.remoting.callback.InvokerCallbackHandler;
import org.jboss.remoting.transport.Connector;
/**
* @author <a href="mailto:r.sigal@computer.org">Ron Sigal</a>
*/
public class MultiplexInvokerServer
{
private SampleInvocationHandler handler;
private Connector connector = null;
public void init() throws Exception
{
connector = new Connector();
InvokerLocator locator = new InvokerLocator("multiplex://localhost:9090");
connector.setInvokerLocator(locator.getLocatorURI());
connector.create();
handler = new SampleInvocationHandler();
connector.addInvocationHandler("sample", handler);
connector.start();
System.out.println("Started server at: " + connector.getInvokerLocator());
}
public boolean isDone()
{
return handler.isDone();
}
protected void setUp() throws Exception
{
init();
}
protected void tearDown() throws Exception
{
if(connector != null)
{
connector.stop();
connector.destroy();
}
}
public static void main(String[] args)
{
MultiplexInvokerServer test = new MultiplexInvokerServer();
try
{
test.setUp();
while (!test.isDone())
Thread.sleep(1000);
test.tearDown();
}
catch(Exception e)
{
e.printStackTrace();
}
}
/**
* Simple invocation handler implementation. When callback client's are registered, will
* generate callbacks periodically.
*/
public static class SampleInvocationHandler implements ServerInvocationHandler, Runnable
{
// list of callback listeners registered
private List listeners = new ArrayList();
private boolean didCallbacks = false;
public SampleInvocationHandler()
{
// will start a new thread for generating callbacks.
Thread callbackThread = new Thread(this);
callbackThread.setDaemon(true);
callbackThread.start();
}
/**
* called by the remoting server to handle the invocation from client.
*
* @param invocation
* @return
* @throws Throwable
*/
public Object invoke(InvocationRequest invocation) throws Throwable
{
// Print out the invocation request
System.out.println("Invocation request is: " + invocation.getParameter());
// Return invocation parameter
return invocation.getParameter();
}
/**
* Adds a callback handler that will listen for callbacks from
* the server invoker handler.
*
* @param callbackHandler
*/
public void addListener(InvokerCallbackHandler callbackHandler)
{
System.out.println("Adding callback listener.");
listeners.add(callbackHandler);
}
/**
* Removes the callback handler that was listening for callbacks
* from the server invoker handler.
*
* @param callbackHandler
*/
public void removeListener(InvokerCallbackHandler callbackHandler)
{
System.out.println("Removing callback listener.");
listeners.remove(callbackHandler);
}
/**
* Will generate callback messages every second while shouldGenerateCallbacks
* flag is true.
*/
public void run()
{
// wait for a callback listener to be registered
while (listeners.isEmpty())
{
try
{
Thread.sleep(1000);
}
catch(InterruptedException e)
{
}
}
for (int i = 0; i < 2; i++)
{
// create new callback message
Callback callback = new Callback(new Integer(29 * (i + 1)));
System.out.println("generating callback value: " + callback.getCallbackObject());
// get a copy of the listener list to avoid ConcurrentModificationException
List localListeners= new ArrayList(listeners);
// send callback to all registered listeners
Iterator itr = localListeners.iterator();
while(itr.hasNext())
{
InvokerCallbackHandler callbackHandler = (InvokerCallbackHandler) itr.next();
try
{
callbackHandler.handleCallback(callback);
}
catch(HandleCallbackException e)
{
e.printStackTrace();
}
try
{
Thread.sleep(2000);
}
catch (InterruptedException ignored)
{
}
}
}
didCallbacks = true;
}
/**
* set the mbean server that the handler can reference
*
* @param server
*/
public void setMBeanServer(MBeanServer server)
{
// NO OP as do not need reference to MBeanServer for this handler
}
/**
* set the invoker that owns this handler
*
* @param invoker
*/
public void setInvoker(ServerInvoker invoker)
{
// NO OP as do not need reference back to the server invoker
}
public boolean isDone()
{
return didCallbacks;
}
}
}