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

    private void flushRequest(Channel channel, final MessageBatch requests) {
        if (requests == null)
            return;


        pendings.incrementAndGet();
        ChannelFuture future = channel.write(requests);
        future.addListener(new ChannelFutureListener() {
            public void operationComplete(ChannelFuture future)
                    throws Exception {


                pendings.decrementAndGet();
                if (!future.isSuccess()) {
                    LOG.info(
                            "failed to send requests to " + remote_addr.toString() + ": ", future.getCause());


                    Channel channel = future.getChannel();


                    if (null != channel) {
                        channel.close();
                        channelRef.compareAndSet(channel, null);
                    }

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               }
            }


            AbortRequest ar = new AbortRequest();
            ar.startTimestamp = transactionId;
            ChannelFuture f = channel.write(ar);
            f.addListener(new ChannelFutureListener() {
               public void operationComplete(ChannelFuture future) {
                  if (!future.isSuccess()) {
                     error(new IOException("Error writing to socket"));
                  }
               }

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            synchronized(createCallbacks) {
               createCallbacks.add(cb);
            }


            TimestampRequest tr = new TimestampRequest();
            ChannelFuture f = channel.write(tr);
            f.addListener(new ChannelFutureListener() {
                  public void operationComplete(ChannelFuture future) {
                     if (!future.isSuccess()) {
                        error(new IOException("Error writing to socket"));
                     }
                  }

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               isCommittedCallbacks.put(startTimestamp, callbacks);
            }
            
            CommitQueryRequest qr = new CommitQueryRequest(startTimestamp, 
                                                           pendingWriteTimestamp);
            ChannelFuture f = channel.write(qr);
            f.addListener(new ChannelFutureListener() {
                  public void operationComplete(ChannelFuture future) {
                     if (!future.isSuccess()) {
                        error(new IOException("Error writing to socket"));
                     }
                  }

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            }         
            
            CommitRequest cr = new CommitRequest();
            cr.startTimestamp = transactionId;
            cr.rows = rows;
            ChannelFuture f = channel.write(cr);
            f.addListener(new ChannelFutureListener() {
                  public void operationComplete(ChannelFuture future) {
                     if (!future.isSuccess()) {
                        error(new IOException("Error writing to socket"));
                     }
                  }

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      public void execute(Channel channel) {
         try {
            FullAbortRequest far = new FullAbortRequest();
            far.startTimestamp = transactionId;


            ChannelFuture f = channel.write(far);
            f.addListener(new ChannelFutureListener() {
                  public void operationComplete(ChannelFuture future) {
                     if (!future.isSuccess()) {
                        error(new IOException("Error writing to socket"));
                     } else {
                        cb.complete();

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        // mark past buffer as scheduled for pool when all pending operations finish
        pastBuffer.scheduleForPool();


        for (final ReadingBuffer rb : readingBuffers) {
            if (rb.readingBuffer == pastBuffer) {
                ChannelFuture future = Channels.future(rb.channel);
                ChannelBuffer cb = rb.flush(future);
                Channels.write(rb.ctx, future, cb);
            }
        }

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           for (AbortedTransaction halfAborted : sharedState.hashmap.halfAborted) {
              channel.write(new AbortedTransactionReport(halfAborted.getStartTimestamp()));
           }
        }
        ChannelBuffer cb;
        ChannelFuture future = Channels.future(channel);
        synchronized (sharedMsgBufLock) {
            cb = buffer.flush(future);
        }
        Channels.write(ctx, future, cb);
        Channels.write(channel, new TimestampResponse(timestamp));

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        bootstrap.setOption("tcpNoDelay", true);


        // Configure the pipeline factory.
        bootstrap.setPipelineFactory(new PipelineFactory());
        ChannelFuture future = bootstrap.connect(new InetSocketAddress(host, port));


        // Wait until the connection attempt succeeds or fails.
        channel = future.awaitUninterruptibly().getChannel();
        if (!future.isSuccess())
        {
            bootstrap.releaseExternalResources();
            throw new IOException("Connection Error", future.getCause());
        }
    }

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            datagramChannelFactory = new NioDatagramChannelFactory(workerPool);
        }
    }


    protected ChannelFuture openConnection() throws Exception {
        ChannelFuture answer;


        if (isTcp()) {
            // its okay to create a new bootstrap for each new channel
            ClientBootstrap clientBootstrap = new ClientBootstrap(channelFactory);
            clientBootstrap.setOption("keepAlive", configuration.isKeepAlive());

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