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package org.jboss.test.remoting.callback.multiple.server;
import org.jboss.jrunit.extensions.ServerTestCase;
import org.jboss.remoting.transport.Connector;
import org.jboss.remoting.InvokerLocator;
import org.jboss.remoting.ServerInvocationHandler;
import org.jboss.remoting.InvocationRequest;
import org.jboss.remoting.ServerInvoker;
import org.jboss.remoting.callback.Callback;
import org.jboss.remoting.callback.InvokerCallbackHandler;
import org.apache.log4j.Level;
import javax.management.MBeanServer;
import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;
/**
* Simple remoting server. Uses inner class SampleInvocationHandler
* as the invocation target handler class.
*
* @author <a href="mailto:telrod@e2technologies.net">Tom Elrod</a>
*/
public class CallbackTestServer extends ServerTestCase
{
// Default locator values
private static String transport = "socket";
private static String host = "localhost";
private static int port = 5500;
private String locatorURI = transport + "://" + host + ":" + port;
private Connector connector;
// String to be returned from invocation handler upon client invocation calls.
public static final String RESPONSE_VALUE = "This is the return to SampleInvocationHandler invocation";
public static final String CALLBACK_VALUE = "This is the payload of callback invocation.";
public void setupServer() throws Exception
{
InvokerLocator locator = new InvokerLocator(locatorURI);
System.out.println("Starting remoting server with locator uri of: " + locatorURI);
connector = new Connector();
connector.setInvokerLocator(locator.getLocatorURI());
connector.start();
CallbackTestServer.SampleInvocationHandler invocationHandler = new CallbackTestServer.SampleInvocationHandler();
// first parameter is sub-system name. can be any String value.
connector.addInvocationHandler("sample", invocationHandler);
}
protected void setUp() throws Exception
{
org.apache.log4j.BasicConfigurator.configure();
org.apache.log4j.Category.getRoot().setLevel(Level.DEBUG);
org.apache.log4j.Category.getInstance("org.jboss.remoting").setLevel(Level.DEBUG);
org.apache.log4j.Category.getInstance("org.jgroups").setLevel(Level.FATAL);
setupServer();
}
protected void tearDown() throws Exception
{
if(connector != null)
{
connector.stop();
connector.destroy();
}
}
public static void main(String[] args)
{
CallbackTestServer server = new CallbackTestServer();
try
{
server.setUp();
Thread.sleep(600000);
}
catch (Exception e)
{
e.printStackTrace();
}
}
/**
* Simple invocation handler implementation.
*/
public static class SampleInvocationHandler implements ServerInvocationHandler
{
private List listeners = new ArrayList();
/**
* called to handle a specific invocation
*
* @param invocation
* @return
* @throws Throwable
*/
public Object invoke(InvocationRequest invocation) throws Throwable
{
// Just going to return static string as this is just simple example code.
// Will also fire callback to listeners if they were to exist using
// simple invocation request.
Callback callback = new Callback(CALLBACK_VALUE);
Iterator itr = listeners.iterator();
while(itr.hasNext())
{
InvokerCallbackHandler callbackHandler = (InvokerCallbackHandler) itr.next();
callbackHandler.handleCallback(callback);
}
return RESPONSE_VALUE;
}
/**
* Adds a callback handler that will listen for callbacks from
* the server invoker handler.
*
* @param callbackHandler
*/
public void addListener(InvokerCallbackHandler callbackHandler)
{
listeners.add(callbackHandler);
}
/**
* Removes the callback handler that was listening for callbacks
* from the server invoker handler.
*
* @param callbackHandler
*/
public void removeListener(InvokerCallbackHandler callbackHandler)
{
listeners.remove(callbackHandler);
}
/**
* 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
}
}
}
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