Examples of org.jgroups.blocks.MessageDispatcher$ProtocolAdapter

org.jgroups.blocks.MessageDispatcher
Provides synchronous and asynchronous message sending with request-response correlation; i.e., matching responses with the original request. It also offers push-style message reception (by internally using the PullPushAdapter).
Channels are simple patterns to asynchronously send a receive messages. However, a significant number of communication patterns in group communication require synchronous communication. For example, a sender would like to send a message to the group and wait for all responses. Or another application would like to send a message to the group and wait only until the majority of the receivers have sent a response, or until a timeout occurred. MessageDispatcher offers a combination of the above pattern with other patterns.
Used on top of channel to implement group requests. Client's handle() method is called when request is received. Is the equivalent of RpcProtocol on the application instead of protocol level. @author Bela Ban

      
      MembershipListener membershipListener = new ControlMembershipListener();
      
      RequestHandler requestHandler = new ControlRequestHandler();
      
      dispatcher = new MessageDispatcher(controlChannel, messageListener, membershipListener, requestHandler, true);
              
      Receiver dataReceiver = new DataReceiver();
      
      dataChannel.setReceiver(dataReceiver);

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//      Thread.currentThread().setContextClassLoader(testLoader);    
//      try
//      {
         channel1 = (Channel) factoryMeth.invoke(factory1, factory1Args);
         dispatchers[0] = new MessageDispatcher(channel1, handler, handler, handler);
         
         channel1.connect("leaktest");
         assertEquals("No classloader leak on channel1 connect", null, handler.getLeakedClassLoader());
         
         channel2 = (Channel) factoryMeth.invoke(factory2, factory2Args);
         dispatchers[1] = new MessageDispatcher(channel2, handler, handler, handler);
         
         channel2.connect("leaktest");
         assertEquals("No classloader leak on channel2 connect", null, handler.getLeakedClassLoader());
//      }
//      finally
//      {
//         Thread.currentThread().setContextClassLoader(ours);
//      }
      
      log.info("Channels connected");
      
      ClassLoaderLeakRunner[] runners = new ClassLoaderLeakRunner[numThreads];      
      
      for (int i = 0; i < runners.length; i++)
      {
         MessageDispatcher disp = dispatchers[i % 2];
            
         runners[i] = new ClassLoaderLeakRunner(disp, numLoops, runnerGroup, semaphore);         
      }


      semaphore.acquire(numThreads);

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    }


    public void start() throws Exception {
        channel=new JChannel(props);
       //  channel.setOpt(Channel.LOCAL, Boolean.FALSE); // do not receive my own messages
        disp=new MessageDispatcher(channel, null, this, this, false);
        channel.connect("MessageDispatcherSpeedTestGroup");


        try {
            if(server) {
                System.out.println("-- Started as server. Press ctrl-c to kill");

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    public ChannelCommandDispatcherFactory(ChannelCommandDispatcherFactoryConfiguration config) {
        this.nodeFactory = config.getNodeFactory();
        this.marshallingContext = config.getMarshallingContext();
        this.timeout = config.getTimeout();
        final RpcDispatcher.Marshaller marshaller = new CommandResponseMarshaller(this.marshallingContext);
        this.dispatcher = new MessageDispatcher() {
            @Override
            protected RequestCorrelator createRequestCorrelator(Protocol transport, RequestHandler handler, Address localAddr) {
                RequestCorrelator correlator = super.createRequestCorrelator(transport, handler, localAddr);
                correlator.setMarshaller(marshaller);
                return correlator;

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      MembershipListener membershipListener = new ControlMembershipListener();
      
      RequestHandler requestHandler = new ControlRequestHandler();
      
      dispatcher = new MessageDispatcher(controlChannel, messageListener, membershipListener, requestHandler, true);
              
      Receiver dataReceiver = new DataReceiver();
      
      dataChannel.setReceiver(dataReceiver);

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            JChannelFactory channelFactory = new JChannelFactory(props);
            clusterChannel = (JChannel) channelFactory.createChannel();
            // Disable delivery of messages we send to ourself.
            clusterChannel.setOpt(Channel.LOCAL, Boolean.FALSE);
            //clusterChannel.setOpt(Channel.AUTO_RECONNECT, Boolean.TRUE);
            broadcastDispatcher = new MessageDispatcher(clusterChannel, null, clusterMembershipListener, this);
            clusterChannel.connect(clusterId);
        }
        catch (ChannelException cex)
        {           
            ClusterException cx = new ClusterException();

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      MembershipListener membershipListener = new ControlMembershipListener();
      
      RequestHandler requestHandler = new ControlRequestHandler();
      
      dispatcher = new MessageDispatcher(controlChannel, messageListener, membershipListener, requestHandler, false);
      
      starting = true;
      
      //first kickoff a thread to start the dataChannel
      Future<String> future = connectDataChannel();

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      muxId = n;
      ClassLoader cl = (ClassLoader) props.get( CLASSLOADER );
      MessageListener wrapper = ( cl != null ) ? new ClassloaderMessageListener( listener, cl ) : listener;
      MessageListenerToRequestHandlerAdapter adapter = new MessageListenerToRequestHandlerAdapter( wrapper );
      MessageDispatcher dispatcher = new MuxMessageDispatcher( muxId, channel, wrapper, listener, adapter );
      sender = new DispatcherMessageSender( dispatcher );
    }
    else {
      // TODO -- perhaps port previous multi-handling?
      channel.setReceiver( listener );

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      MembershipListener membershipListener = new ControlMembershipListener();
      
      RequestHandler requestHandler = new ControlRequestHandler();
      
      dispatcher = new MessageDispatcher(controlChannel, messageListener, membershipListener, requestHandler, false);
      
      starting = true;
      
      //first kickoff a thread to start the dataChannel
      Future<String> future = connectDataChannel();

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      }


      ClassLoader cl = (ClassLoader) props.get( CLASSLOADER );
      MessageListener wrapper = ( cl != null ) ? new ClassloaderMessageListener( listener, cl ) : listener;
      MessageListenerToRequestHandlerAdapter adapter = new MessageListenerToRequestHandlerAdapter( wrapper );
      MessageDispatcher dispatcher = new MuxMessageDispatcher( muxId, channel, wrapper, listener, adapter );
      sender = new DispatcherMessageSender( dispatcher );
    }
    else {
      MessageListenerToRequestHandlerAdapter adapter = new MessageListenerToRequestHandlerAdapter( listener );
      MessageDispatcher standardDispatcher = new MessageDispatcher( channel, listener, listener, adapter );
      sender = new DispatcherMessageSender( standardDispatcher );
    }


    masterNodeSelector.setLocalAddress( channel.getAddress() );

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