Examples of ChannelFuture

com.facebook.presto.jdbc.internal.netty.channel.ChannelFuture
- NEVER DO THIS {@code @Override}public void messageReceived( {@link ChannelHandlerContext} ctx, {@link MessageEvent} e) {if (e.getMessage() instanceof GoodByeMessage) { {@link ChannelFuture} future = e.getChannel().close();future.awaitUninterruptibly(); // Perform post-closure operation // ... } } // GOOD {@code @Override}public void messageReceived( {@link ChannelHandlerContext} ctx, {@link MessageEvent} e) {if (e.getMessage() instanceof GoodByeMessage) { {@link ChannelFuture} future = e.getChannel().close();future.addListener(new {@link ChannelFutureListener}() { public void operationComplete( {@link ChannelFuture} future) {// Perform post-closure operation // ... } }); } }
In spite of the disadvantages mentioned above, there are certainly the cases where it is more convenient to call {@link #await()}. In such a case, please make sure you do not call {@link #await()} in an I/O thread. Otherwise,{@link IllegalStateException} will be raised to prevent a dead lock.
Do not confuse I/O timeout and await timeout
The timeout value you specify with {@link #await(long)}, {@link #await(long,TimeUnit)}, {@link #awaitUninterruptibly(long)}, or {@link #awaitUninterruptibly(long,TimeUnit)} are not related with I/Otimeout at all. If an I/O operation times out, the future will be marked as 'completed with failure,' as depicted in the diagram above. For example, connect timeout should be configured via a transport-specific option:
```
 // BAD - NEVER DO THIS {@link ClientBootstrap} b = ...;{@link ChannelFuture} f = b.connect(...);f.awaitUninterruptibly(10, TimeUnit.SECONDS); if (f.isCancelled()) { // Connection attempt cancelled by user } else if (!f.isSuccess()) { // You might get a NullPointerException here because the future // might not be completed yet. f.getCause().printStackTrace(); } else { // Connection established successfully } // GOOD {@link ClientBootstrap} b = ...;// Configure the connect timeout option. b.setOption("connectTimeoutMillis", 10000); {@link ChannelFuture} f = b.connect(...);f.awaitUninterruptibly(); // Now we are sure the future is completed. assert f.isDone(); if (f.isCancelled()) { // Connection attempt cancelled by user } else if (!f.isSuccess()) { f.getCause().printStackTrace(); } else { // Connection established successfully } 
```
@apiviz.landmark @apiviz.owns com.facebook.presto.jdbc.internal.netty.channel.ChannelFutureListener - - notifies
io.netty.channel.ChannelFuture
- NEVER DO THIS {@code @Override}public void messageReceived( {@link ChannelHandlerContext} ctx, GoodByeMessage msg) {{@link ChannelFuture} future = ctx.channel().close();future.awaitUninterruptibly(); // Perform post-closure operation // ... } // GOOD {@code @Override}public void messageReceived( {@link ChannelHandlerContext} ctx, GoodByeMessage msg) {{@link ChannelFuture} future = ctx.channel().close();future.addListener(new {@link ChannelFutureListener}() { public void operationComplete( {@link ChannelFuture} future) {// Perform post-closure operation // ... } }); }
In spite of the disadvantages mentioned above, there are certainly the cases where it is more convenient to call {@link #await()}. In such a case, please make sure you do not call {@link #await()} in an I/O thread. Otherwise,{@link BlockingOperationException} will be raised to prevent a dead lock.
Do not confuse I/O timeout and await timeout
The timeout value you specify with {@link #await(long)}, {@link #await(long,TimeUnit)}, {@link #awaitUninterruptibly(long)}, or {@link #awaitUninterruptibly(long,TimeUnit)} are not related with I/Otimeout at all. If an I/O operation times out, the future will be marked as 'completed with failure,' as depicted in the diagram above. For example, connect timeout should be configured via a transport-specific option:
```
 // BAD - NEVER DO THIS {@link Bootstrap} b = ...;{@link ChannelFuture} f = b.connect(...);f.awaitUninterruptibly(10, TimeUnit.SECONDS); if (f.isCancelled()) { // Connection attempt cancelled by user } else if (!f.isSuccess()) { // You might get a NullPointerException here because the future // might not be completed yet. f.getCause().printStackTrace(); } else { // Connection established successfully } // GOOD {@link Bootstrap} b = ...;// Configure the connect timeout option. b.setOption( {@link ChannelOption}.CONNECT_TIMEOUT_MILLIS, 10000); {@link ChannelFuture} f = b.connect(...);f.awaitUninterruptibly(); // Now we are sure the future is completed. assert f.isDone(); if (f.isCancelled()) { // Connection attempt cancelled by user } else if (!f.isSuccess()) { f.getCause().printStackTrace(); } else { // Connection established successfully } 
```
net.gleamynode.netty.channel.ChannelFuture
@author The Netty Project (netty@googlegroups.com) @author Trustin Lee (trustin@gmail.com) @version $Rev: 476 $, $Date: 2008-07-04 15:06:37 +0900 (Fri, 04 Jul 2008) $ @apiviz.landmark @apiviz.owns net.gleamynode.netty.channel.ChannelFutureListener - - notifies
net.minecraft.util.io.netty.channel.ChannelFuture
org.elasticsearch.common.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

Examples of org.jboss.netty.channel.ChannelFuture

    finally
    {
      _lock.unlock();
    }


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

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Examples of org.jboss.netty.channel.ChannelFuture

    finally
    {
      _lock.unlock();
    }


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

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Examples of org.jboss.netty.channel.ChannelFuture


  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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Examples of org.jboss.netty.channel.ChannelFuture


  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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Examples of org.jboss.netty.channel.ChannelFuture

  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());

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Examples of org.jboss.netty.channel.ChannelFuture

    responseHandler.setConnectionListener(connectListener);
    Channel channel = createClientBootstrap(responseHandler);
    try
    {
        setListeners(responseHandler,respProcessor,requestListener,closeListener);
        ChannelFuture writeFuture = channel.write(new DefaultHttpRequest(HttpVersion.HTTP_1_1,
                                                                         HttpMethod.GET, "/test"));
        Assert.assertTrue(writeFuture.await(1000));


        //It seems that there is a race condition between the writeFuture succeeding
        //and the writeComplete message getting to the handler. Make sure that the
        //writeComplete has got to the handler before we do anything else with
        //the channel.

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Examples of org.jboss.netty.channel.ChannelFuture

    responseHandler.setRequestListener(requestListener);
    responseHandler.setConnectionListener(connectListener);
    responseHandler.setCloseListener(closeListener);


    //use port 0 to generate connect fail
    ChannelFuture channelFuture = createChannelFuture(responseHandler,0);
    Channel channel = channelFuture.getChannel();


    try
    {
      channel.write(new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET, "/test"));
      final List<String> respCallbacks = respProcessor.getCallbacks();

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Examples of org.jboss.netty.channel.ChannelFuture


  void sendServerResponse(SocketAddress clientAddr, Object response, long timeoutMillis)
  {
    Channel childChannel = _dummyServer.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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Examples of org.jboss.netty.channel.ChannelFuture

            res.setContent(ChannelBuffers.copiedBuffer(res.getStatus().toString(), CharsetUtil.UTF_8));
            setContentLength(res, res.getContent().readableBytes());
        }


        // Send the response and close the connection if necessary.
        ChannelFuture f = ctx.getChannel().write(res);
        if (!isKeepAlive(req) || res.getStatus().getCode() != 200) {
            f.addListener(ChannelFutureListener.CLOSE);
        }
    }

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Examples of org.jboss.netty.channel.ChannelFuture


        // Write the initial line and the header.
        ch.write(response);


        // Write the content.
        ChannelFuture writeFuture;
        if (ch.getPipeline().get(SslHandler.class) != null) {
            // Cannot use zero-copy with HTTPS.
            writeFuture = ch.write(new ChunkedFile(raf, 0, fileLength, 8192));
        } else {
            // No encryption - use zero-copy.
            final FileRegion region =
                    new DefaultFileRegion(raf.getChannel(), 0, fileLength);
            writeFuture = ch.write(region);
            writeFuture.addListener(new ChannelFutureProgressListener() {
                public void operationComplete(ChannelFuture future) {
                    region.releaseExternalResources();
                }


                public void operationProgressed(
                        ChannelFuture future, long amount, long current, long total) {
                }
            });
        }


        // Decide whether to close the connection or not.
        if (!isKeepAlive(request)) {
            // Close the connection when the whole content is written out.
            writeFuture.addListener(ChannelFutureListener.CLOSE);
        }
    }

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Examples of ChannelFuture

Do not confuse I/O timeout and await timeout

Do not confuse I/O timeout and await timeout

Examples of org.jboss.netty.channel.ChannelFuture

Examples of org.jboss.netty.channel.ChannelFuture

Examples of org.jboss.netty.channel.ChannelFuture

Examples of org.jboss.netty.channel.ChannelFuture

Examples of org.jboss.netty.channel.ChannelFuture

Examples of org.jboss.netty.channel.ChannelFuture

Examples of org.jboss.netty.channel.ChannelFuture

Examples of org.jboss.netty.channel.ChannelFuture

Examples of org.jboss.netty.channel.ChannelFuture

Examples of org.jboss.netty.channel.ChannelFuture