Examples of org.jgroups.MessageListener

org.jgroups.MessageListener
Allows a listener to be notified when a message arrives. Contrary to the pull-style of channels, some building blocks (e.g., {@link org.jgroups.blocks.PullPushAdapter}) provide an event-like, push-style message delivery model. In this case, the entity to be notified of message reception needs to provide a callback to be invoked whenever a message has been received. The MessageListener interface provides a method to do so.

      if ( muxer.get( muxId ) != null ) {
        throw log.jGroupsMuxIdAlreadyTaken( muxId );
      }


      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 {

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      if ( muxer.get( muxId ) != null ) {
        throw log.jGroupsMuxIdAlreadyTaken( muxId );
      }


      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 {

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            this.channel = this.createChannel();
        }


        // Subscribe to events generated by the channel
        MembershipListener meml = new MembershipListenerImpl();
        MessageListener msgl = this.stateIdPrefix == null ? null : new MessageListenerImpl();
        this.dispatcher = new RpcHandler(this.scopeId.shortValue(), this.channel, msgl, meml, new RequestMarshallerImpl(),
                new ResponseMarshallerImpl());


        if (!this.channel.isConnected()) {
            this.channelSelfConnected = true;

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            this.channel = this.createChannel();
        }


        // Subscribe to events generated by the channel
        MembershipListener meml = new MembershipListenerImpl();
        MessageListener msgl = this.stateIdPrefix == null ? null : new MessageListenerImpl();
        this.dispatcher = new RpcHandler(this.scopeId, this.channel, msgl, meml, new RequestMarshallerImpl(),
                new ResponseMarshallerImpl());


        if (!this.channel.isConnected()) {
            this.channelSelfConnected = true;

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            this.channel = this.createChannel();
        }


        // Subscribe to events generated by the channel
        MembershipListener meml = new MembershipListenerImpl();
        MessageListener msgl = this.stateIdPrefix == null ? null : new MessageListenerImpl();
        this.dispatcher = new RpcHandler(this.scopeId.shortValue(), this.channel, msgl, meml, new RequestMarshallerImpl(),
                new ResponseMarshallerImpl());


        if (!this.channel.isConnected()) {
            this.channelSelfConnected = true;

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         this.channel = this.createChannel();               
      }
      
      // Subscribe to events generated by the channel
      MembershipListener meml = new MembershipListenerImpl();
      MessageListener msgl = this.stateIdPrefix == null ? null : new MessageListenerImpl();
      this.dispatcher = new RpcHandler(this.scopeId.shortValue(), this.channel, msgl, meml, new RequestMarshallerImpl(), new ResponseMarshallerImpl());
      
      if (!this.channel.isConnected())
      {
         this.channelSelfConnected = true;

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      if ( muxer.get( muxId ) != null ) {
        throw log.jGroupsMuxIdAlreadyTaken( muxId );
      }


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

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        this.stateIdPrefix = this.getClass().getName() + "." + this.scopeId + ".";


        // Subscribe to events generated by the channel
        MembershipListener meml = new MembershipListenerImpl();
        MessageListener msgl = this.stateIdPrefix == null ? null : new MessageListenerImpl();
        this.dispatcher = new RpcHandler(this.scopeId, this.channel, msgl, meml, new RequestMarshallerImpl(), new ResponseMarshallerImpl());


        meml.viewAccepted(this.channel.getView());
        // Since we haven't triggered a flush, we need to manually open the gate to allow rpcs.
        this.flushBlockGate.open();

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/*     */ 
/* 128 */     this.controlChannel.setOpt(3, Boolean.FALSE);
/*     */ 
/* 130 */     this.dataChannel.setOpt(3, Boolean.FALSE);
/*     */ 
/* 132 */     MessageListener messageListener = new ControlMessageListener(null);
/*     */ 
/* 134 */     MembershipListener membershipListener = new ControlMembershipListener(null);
/*     */ 
/* 136 */     RequestHandler requestHandler = new ControlRequestHandler(null);
/*     */

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      // We don't want to receive local messages on any of the channels
      controlChannel.setOpt(Channel.LOCAL, Boolean.FALSE);


      dataChannel.setOpt(Channel.LOCAL, Boolean.FALSE);
      
      MessageListener messageListener = new ControlMessageListener();
      
      MembershipListener membershipListener = new ControlMembershipListener();
      
      RequestHandler requestHandler = new ControlRequestHandler();

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