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

        inboundChannel.setReadable(false);


        // Start the connection attempt.
        ClientBootstrap cb = new ClientBootstrap(cf);
        cb.getPipeline().addLast("handler", new OutboundHandler(e.getChannel()));
        ChannelFuture f = cb.connect(new InetSocketAddress(remoteHost, remotePort));


        outboundChannel = f.getChannel();
        f.addListener(new ChannelFutureListener() {
            public void operationComplete(ChannelFuture future) throws Exception {
                if (future.isSuccess()) {
                    // Connection attempt succeeded:
                    // Begin to accept incoming traffic.
                    inboundChannel.setReadable(true);

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Examples of org.jboss.netty.channel.ChannelFuture

    });
  }
});
    
     // Start the connection attempt.
    ChannelFuture future = bootstrap.connect(new InetSocketAddress("localhost", 8080));
    // Wait until the connection attempt succeeds or fails.
    Channel channel = future.awaitUninterruptibly().getChannel();
    if (future.isSuccess())
      System.out.println("connected");
    
    // get a proxy 


    }

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Examples of org.jboss.netty.channel.ChannelFuture

              ctx.sendUpstream(e);
              System.out.println("channel closed wait to reconnect ...");
                  timer.schedule(new TimerTask() {
                      public void run() {
                        System.out.println("reconnecting...");
                         ChannelFuture f = _bootstrap.connect();
                         try
              {
                           System.out.println("future wait");
                f.awaitUninterruptibly();
                         System.out.println("future wait terminated");
              }
              catch (Exception e)
              {
                // TODO Auto-generated catch block
                e.printStackTrace();
                 }
                       if (f.isSuccess())
                       System.out.println("connected");
                       else
                       {
                         System.out.println("not connected");
                        // f.getChannel().close();

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Examples of org.jboss.netty.channel.ChannelFuture

      ctx.sendUpstream(e);
      Constants.ahessianLogger.warn("channel closed wait to reconnect ...");
          timer.schedule(new TimerTask() {
              public void run() {
                Constants.ahessianLogger.warn("reconnecting...");
                  ChannelFuture f = _bootstrap.getBootstrap().connect();
                  try
        {
          f.awaitUninterruptibly();
        }
        catch (Exception e)
        {
          // TODO Auto-generated catch block
          Constants.ahessianLogger.warn("", e);
            }
                if (f.isSuccess())
                  Constants.ahessianLogger.warn("connected");
                else
                {
                  Constants.ahessianLogger.warn("not connected");
                }

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Examples of org.jboss.netty.channel.ChannelFuture

        }
      }
      if (_channel != null && _channel.isOpen())
        try
        {
          ChannelFuture cf = _channel.close();
          getLog().info("controller close session");
          cf.await(1000);
        }
        catch (InterruptedException e)
        {
          e.printStackTrace();
          getLog().info("session close wait interrupted in JVMController");

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Examples of org.jboss.netty.channel.ChannelFuture

          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();
              options.put("sync", true);
              options.put("timeout", new Long(10000));
            proxy = (AsyncServiceManagerServer) factory.create(AsyncServiceManagerServer.class, HubMain.class.getClassLoader(), options);
            connected = ((Boolean)proxy.isServiceManager()).booleanValue();
            if (connected)
            {
              synchronized(proxies)
              {
            proxies.put(host.getName(), proxy);
              }
            Host newHost = new Host(host.getName(), host.getPort());
            newHost.setIncluded(true);
            newHost.setState("CONNECTED");
            hostsList.remove(host.getName());
            hostsList.put(newHost.getName(), newHost);
            //if (host.isIncluded())
            // TODO  servicesList.addService(host.getName(), proxy);
            }
            else
              future.getChannel().close();
          }
        }
        catch (Exception e)
        {
          System.out.println("error accessing "+host.getName());
          e.printStackTrace();
          
          connected = false;
          if (future != null)
            future.getChannel().close();
        }
        
      }
        
      if (!connected)

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Examples of org.jboss.netty.channel.ChannelFuture

            // get the port - hostName should be the local host
            String[] x = host.split(":");
            int port = Integer.parseInt(x[1]);
            String hostName = x[0];
            // try to connect
            ChannelFuture future = bootstrap.connect(new InetSocketAddress(hostName, port));
            // future.await(10000);


            // stop discovery
            discovery.stop();
            // doConnected();

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Examples of org.jboss.netty.channel.ChannelFuture


          public void run()
          {
            if (_session != null && _session.isConnected() && !_stopping && !_appearHanging)
            {
              ChannelFuture future = _session.write(new Message(Constants.WRAPPER_MSG_PING, null));
              try
              {
                future.await(10000);
              }
              catch (InterruptedException e)
              {
                e.printStackTrace();
              }

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Examples of org.jboss.netty.channel.ChannelFuture

    // try connecting, if we could not sleep then retry
    while (!_started)
    {
      if (_debug)
        log.fine("connecting to port " + _port);
      final ChannelFuture future1 = connector.connect();
      try
      {
        future1.await();
        _started = future1.isSuccess();
      }
      catch (InterruptedException e1)
      {
        // TODO Auto-generated catch block
        e1.printStackTrace();
      }
      /*
       * executor.execute(new Runnable() {
       * 
       * public void run() { future1.addListener(new
       * ChannelFutureListener() { public void
       * operationComplete(ChannelFuture future) throws Exception {
       * _lock.lock(); System.out.println("future" + future.isSuccess());
       * _started = future.isSuccess(); _connectEnd.signal();
       * _lock.unlock();
       * 
       * } }); }
       * 
       * });
       * 
       * _lock.lock(); try { _connectEnd.await(); } catch
       * (InterruptedException e1) { // TODO Auto-generated catch block
       * e1.printStackTrace(); } _lock.unlock();
       * System.out.println("started "+_started);
       */


      if (_started)
        future1.getChannel().write(new Message(Constants.WRAPPER_MSG_KEY, _key));
      else
        try
        {
          if (_debug)
            log.fine("connection failed -> sleep then retry");

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Examples of org.jboss.netty.channel.ChannelFuture

    try
    {
    super.flush();
    if (future == null)
    {
      ChannelFuture f = sendDownstream(null);
      f.await(20000);
      //if (!f.await(10000))
      //  throw new IOException("write longer than 10 secs");
    }
    else
    {

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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