Examples of io.netty.channel.group.ChannelGroupFuture

io.netty.channel.group.ChannelGroupFuture
- NEVER DO THIS {@code @Override}public void messageReceived( {@link ChannelHandlerContext} ctx, ShutdownMessage msg) {{@link ChannelGroup} allChannels = MyServer.getAllChannels();{@link ChannelGroupFuture} future = allChannels.close();future.awaitUninterruptibly(); // Perform post-shutdown operation // ... } // GOOD {@code @Override}public void messageReceived(ChannelHandlerContext ctx, ShutdownMessage msg) { {@link ChannelGroup} allChannels = MyServer.getAllChannels();{@link ChannelGroupFuture} future = allChannels.close();future.addListener(new {@link ChannelGroupFutureListener}() { public void operationComplete( {@link ChannelGroupFuture} 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.

    // We need to reset it since sock.internalClose() above can call into the close handlers of sockets on the same thread
    // which can cause context id for the thread to change!


    vertx.setContext(closeContext);


    ChannelGroupFuture fut = serverChannelGroup.close();
    fut.addListener(cg -> {
      metrics.close();
      executeCloseDone(closeContext, done, fut.cause());
    });


  }

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    if (serverChannel == null) {
      throw new IllegalStateException("Server is not running.");
    }


    channelGroup.add(serverChannel);
    final ChannelGroupFuture future = channelGroup.close();
    channelGroup.remove(serverChannel);
    serverChannel = null;


    return future;

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      }




      // serverChannelGroup has been unbound in pause()
      serverChannelGroup.close().awaitUninterruptibly();
      ChannelGroupFuture future = channelGroup.close().awaitUninterruptibly();


      if (!future.isSuccess())
      {
         HornetQServerLogger.LOGGER.nettyChannelGroupError();
         Iterator<Channel> iterator = future.group().iterator();
         while (iterator.hasNext())
         {
            Channel channel = iterator.next();
            if (channel.isActive())
            {

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      {
         return;
      }


      // We *pause* the acceptor so no new connections are made
      ChannelGroupFuture future = serverChannelGroup.close().awaitUninterruptibly();
      if (!future.isSuccess())
      {
         HornetQServerLogger.LOGGER.nettyChannelGroupBindError();
         Iterator<Channel> iterator = future.group().iterator();
         while (iterator.hasNext())
         {
            Channel channel = iterator.next();
            if (channel.isActive())
            {

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    // We need to reset it since sock.internalClose() above can call into the close handlers of sockets on the same thread
    // which can cause context id for the thread to change!


    vertx.setContext(closeContext);


    ChannelGroupFuture fut = serverChannelGroup.close();
    fut.addListener(new ChannelGroupFutureListener() {
      public void operationComplete(ChannelGroupFuture fut) throws Exception {
        executeCloseDone(closeContext, done, fut.cause());
      }
    });


  }

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    vertx.setContext(closeContext);


    final CountDownLatch latch = new CountDownLatch(1);


    ChannelGroupFuture fut = serverChannelGroup.close();
    fut.addListener(new ChannelGroupFutureListener() {
      public void operationComplete(ChannelGroupFuture channelGroupFuture) throws Exception {
        latch.countDown();
      }
    });


    // Always sync
    try {
      latch.await(10, TimeUnit.SECONDS);
    } catch (InterruptedException e) {
    }


    executeCloseDone(closeContext, done, fut.cause());
  }

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    if (serverChannel == null) {
      throw new IllegalStateException("Server is not running.");
    }


    channelGroup.add(serverChannel);
    final ChannelGroupFuture future = channelGroup.close();
    channelGroup.remove(serverChannel);
    serverChannel = null;


    return future;

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