Examples of org.jboss.netty.channel.ChannelFuture

org.jboss.netty.channel.ChannelFuture
The result of an asynchronous {@link Channel} I/O operation.
All I/O operations in Netty are asynchronous. It means any I/O calls will return immediately with no guarantee that the requested I/O operation has been completed at the end of the call. Instead, you will be returned with a {@link ChannelFuture} instance which tells you when the requested I/Ooperation has succeeded, failed, or cancelled.
Various methods are provided to let you check if the I/O operation has been completed, wait for the completion, and retrieve the result of the I/O operation. It also allows you to add more than one {@link ChannelFutureListener}so you can get notified when the I/O operation has been completed. @author The Netty Project (netty-dev@lists.jboss.org) @author Trustin Lee (tlee@redhat.com) @version $Rev: 987 $, $Date: 2009-03-04 23:27:20 +0900 (Wed, 04 Mar 2009) $ @apiviz.landmark @apiviz.owns org.jboss.netty.channel.ChannelFutureListener - - notifies

          HessianProxyFactory factory = new HessianProxyFactory(executor, host.getName()+":"+host.getPort());
          bootstrap.setPipelineFactory(
                  new RPCClientPipelineFactory(executor, factory));
          
           // Start the connection attempt.
          ChannelFuture future = bootstrap.connect(new InetSocketAddress(host.getName(), host.getPort()));
          try
        {
          future.await(10000);
          connected = future.isSuccess();




          if (connected)
          {
              Map options = new HashMap();
            proxy = (AsyncServiceManagerServer) factory.create(AsyncServiceManagerServer.class, ClientMain.class.getClassLoader(), options);
            connected = ((Boolean)((Future)proxy.isServiceManager()).get(10, TimeUnit.SECONDS)).booleanValue();
            if (connected)
            {
            proxies.put(host.getName(), proxy);
            Host newHost = new Host(host.getName(), host.getPort());
            newHost.setIncluded(host.isIncluded());
            newHost.setState("CONNECTED");
            hosts.updateObject(newHost);
            if (host.isIncluded())
              servicesTable.addService(host.getName(), proxy);
            }
            else
              future.getChannel().close();
          }
        }
        catch (Exception e)
        {
          System.out.println("error accessing "+host.getName());
          connected = false;
          if (future != null)
            future.getChannel().close();
        }
        
      }
        
      if (!connected)

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  @Override
  void timedOut(ChannelHandlerContext ctx)
  {
      Constants.ahessianLogger.info("write timed out -> send empty buffer heartbeat");
    ChannelFuture future = Channels.future(_ctx.getChannel());
    ChannelBuffer b = ChannelBuffers.buffer(1);
    b.writeByte(0);
        _ctx.sendDownstream(new DownstreamMessageEvent(_ctx.getChannel(), future, b, _ctx.getChannel().getRemoteAddress()));
  }

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                });
            }
        });
        
        ChannelFuture f = bootstrap.connect();
        channel = f.getChannel();
        
        mcast.init(new ChannelPipelineFactory() {
            public ChannelPipeline getPipeline() {
                return Channels.pipeline(new SimpleChannelUpstreamHandler()
                {

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        }


        Channel channel = getFactory().newChannel(bossPipeline);


        // Wait until the future is available.
        ChannelFuture future = null;
        do {
            try {
                future = futureQueue.poll(Integer.MAX_VALUE, TimeUnit.SECONDS);
            } catch (InterruptedException e) {
                // Ignore
            }
        } while (future == null);


        // Wait for the future.
        future.awaitUninterruptibly();
        if (!future.isSuccess()) {
            future.getChannel().close().awaitUninterruptibly();
            throw new ChannelException("Failed to bind to: " + localAddress, future.getCause());
        }


        return channel;
    }

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          @Override
          public void run()
          {
            //System.err.println("Client running on thread: " + Thread.currentThread());
            ChannelFuture connectFuture = _clientBootstrap.connect(new LocalAddress(serverAddr));
            connectFuture.awaitUninterruptibly();
            _channel = connectFuture.getChannel();
            _lock.lock();
            try
            {
              _connected = connectFuture.isSuccess();
              _connectedCondition.signalAll();
              while (!_shutdownRequested)
              {
                try
                {

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    finally
    {
      _lock.unlock();
    }


    ChannelFuture closeFuture = _channel.close();
    closeFuture.awaitUninterruptibly();
    _clientBootstrap.releaseExternalResources();
  }

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    finally
    {
      _lock.unlock();
    }


    ChannelFuture closeFuture = _channel.close();
    closeFuture.awaitUninterruptibly();
    _srvBootstrap.releaseExternalResources();
  }

View Full Code Here


  public void sendServerResponse(SocketAddress clientAddr, Object response, long timeoutMillis)
  {
    Channel childChannel = getChildChannel(clientAddr);
    Assert.assertNotEquals(childChannel, null);
    ChannelFuture writeFuture = childChannel.write(response);
    if (timeoutMillis > 0)
    {
      try
      {
        writeFuture.await(timeoutMillis);
      }
      catch (InterruptedException e)
      {
        //NOOP
      }
      Assert.assertTrue(writeFuture.isDone());
      Assert.assertTrue(writeFuture.isSuccess());
    }
  }

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  public void sendServerClose(SocketAddress clientAddr, long timeoutMillis)
  {
    Channel childChannel = getChildChannel(clientAddr);
    Assert.assertNotEquals(childChannel, null);
    ChannelFuture closeFuture = childChannel.close();
    if (timeoutMillis > 0)
    {
      try
      {
        closeFuture.await(timeoutMillis);
      }
      catch (InterruptedException e)
      {
        //NOOP
      }
      Assert.assertTrue(closeFuture.isDone());
      Assert.assertTrue(closeFuture.isSuccess());
    }
  }

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  public abstract ChannelBuffer serializeToBinary();


  @Override
  public void writeToChannelAsBinary(ChannelHandlerContext ctx, ChannelFuture future)
  {
    ChannelFuture realFuture = (null != future) ? future : Channels.future(ctx.getChannel());


    ChannelBuffer serializedResponse = serializeToBinary();
    DownstreamMessageEvent e = new DownstreamMessageEvent(ctx.getChannel(), realFuture,
                                                          serializedResponse,
                                                          ctx.getChannel().getRemoteAddress());

View Full Code Here

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