Example usage for io.netty.channel ChannelFuture cause

Introduction

In this page you can find the example usage for io.netty.channel ChannelFuture cause.

Prototype

Throwable cause();

Source Link

Document

Returns the cause of the failed I/O operation if the I/O operation has failed.

Usage

From source file:com.spotify.heroic.consumer.collectd.Server.java

License:Apache License

public static AsyncFuture<Server> setup(final AsyncFramework async, final CollectdChannelHandler handler,
        final InetAddress host, final int port) {
    final EventLoopGroup group = new NioEventLoopGroup();
    final Bootstrap b = new Bootstrap();

    b.group(group).channel(NioDatagramChannel.class).option(ChannelOption.SO_BROADCAST, true).handler(handler);

    final ResolvableFuture<Server> future = async.future();

    b.bind(host, port).addListener(new ChannelFutureListener() {
        @Override/*from w  w  w . j a  v a2 s . c o m*/
        public void operationComplete(final ChannelFuture f) throws Exception {
            if (f.isSuccess()) {
                future.resolve(new Server(async, f.channel()));
            } else {
                future.fail(f.cause() != null ? f.cause() : new RuntimeException("Failed to bind"));
            }
        }
    });

    return future;
}

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From source file:com.spotify.heroic.rpc.nativerpc.NativeRpcClient.java

License:Apache License

private <R> ChannelFutureListener handleConnect(final NativeRpcRequest request,
        final ResolvableFuture<R> future, final AtomicReference<Timeout> heartbeatTimeout,
        final Timeout requestTimeout) {
    return new ChannelFutureListener() {
        @Override/*from  w ww. j  av a  2s  .c  o  m*/
        public void operationComplete(ChannelFuture f) throws Exception {
            if (!f.isSuccess()) {
                future.fail(f.cause());
                return;
            }

            f.channel().writeAndFlush(request)
                    .addListener(handleRequestSent(future, heartbeatTimeout, requestTimeout));
        }
    };
}

---

From source file:com.spotify.heroic.rpc.nativerpc.NativeRpcClient.java

License:Apache License

private <R> ChannelFutureListener handleRequestSent(final ResolvableFuture<R> future,
        final AtomicReference<Timeout> heartbeatTimeout, final Timeout requestTimeout) {
    return new ChannelFutureListener() {
        @Override//w w w. ja va2  s  .  c  o m
        public void operationComplete(ChannelFuture f) throws Exception {
            requestTimeout.cancel();

            if (!f.isSuccess()) {
                future.fail(f.cause());
                return;
            }

            final Timeout timeout = timer.newTimeout(heartbeatTimeout(f.channel(), future), heartbeatInterval,
                    TimeUnit.MILLISECONDS);

            heartbeatTimeout.set(timeout);
        }
    };
}

---

From source file:com.spotify.heroic.rpc.nativerpc.NativeRpcProtocolServer.java

License:Apache License

private AsyncFuture<Void> start() {
    final ServerBootstrap s = new ServerBootstrap();
    s.channel(NioServerSocketChannel.class);
    s.group(bossGroup, workerGroup);/*from  ww  w  . j a  va2s. c o m*/
    s.childHandler(new NativeRpcServerSession(timer, mapper, container, maxFrameSize, encoding));

    final ChannelFuture bind = s.bind(address);

    bind.addListener(new ChannelFutureListener() {
        @Override
        public void operationComplete(final ChannelFuture f) throws Exception {
            if (!f.isSuccess()) {
                bindFuture.fail(f.cause());
                return;
            }

            serverChannel.set(f.channel());
            final InetSocketAddress address = (InetSocketAddress) f.channel().localAddress();
            bindFuture.resolve(address);
        }
    });

    return bindFuture.directTransform(a -> null);
}

---

From source file:com.test.AbstractBootstrap.java

License:Apache License

private ChannelFuture doBind(final SocketAddress localAddress) {
    final ChannelFuture regFuture = initAndRegister();
    final Channel channel = regFuture.channel();
    if (regFuture.cause() != null) {
        return regFuture;
    }//  w  w  w.  jav  a 2 s.c om

    if (regFuture.isDone()) {
        // At this point we know that the registration was complete and successful.
        ChannelPromise promise = channel.newPromise();
        doBind0(regFuture, channel, localAddress, promise);
        return promise;
    } else {
        // Registration future is almost always fulfilled already, but just in case it's not.
        final PendingRegistrationPromise promise = new PendingRegistrationPromise(channel);
        regFuture.addListener(new ChannelFutureListener() {
            @Override
            public void operationComplete(ChannelFuture future) throws Exception {
                Throwable cause = future.cause();
                if (cause != null) {
                    // Registration on the EventLoop failed so fail the ChannelPromise directly to not cause an
                    // IllegalStateException once we try to access the EventLoop of the Channel.
                    promise.setFailure(cause);
                } else {
                    // Registration was successful, so set the correct executor to use.
                    // See https://github.com/netty/netty/issues/2586
                    promise.executor = channel.eventLoop();
                }
                doBind0(regFuture, channel, localAddress, promise);
            }
        });
        return promise;
    }
}

---

From source file:com.test.AbstractBootstrap.java

License:Apache License

final ChannelFuture initAndRegister() {
    final Channel channel = channelFactory().newChannel();
    try {/*from w  w  w.j a v a  2  s .  com*/
        init(channel);
    } catch (Throwable t) {
        channel.unsafe().closeForcibly();
        // as the Channel is not registered yet we need to force the usage of the GlobalEventExecutor
        return new DefaultChannelPromise(channel, GlobalEventExecutor.INSTANCE).setFailure(t);
    }

    ChannelFuture regFuture = group().register(channel);
    if (regFuture.cause() != null) {
        if (channel.isRegistered()) {
            channel.close();
        } else {
            channel.unsafe().closeForcibly();
        }
    }

    // If we are here and the promise is not failed, it's one of the following cases:
    // 1) If we attempted registration from the event loop, the registration has been completed at this point.
    //    i.e. It's safe to attempt bind() or connect() now because the channel has been registered.
    // 2) If we attempted registration from the other thread, the registration request has been successfully
    //    added to the event loop's task queue for later execution.
    //    i.e. It's safe to attempt bind() or connect() now:
    //         because bind() or connect() will be executed *after* the scheduled registration task is executed
    //         because register(), bind(), and connect() are all bound to the same thread.

    return regFuture;
}

---

From source file:com.test.AbstractBootstrap.java

License:Apache License

private static void doBind0(final ChannelFuture regFuture, final Channel channel,
        final SocketAddress localAddress, final ChannelPromise promise) {

    // This method is invoked before channelRegistered() is triggered.  Give user handlers a chance to set up
    // the pipeline in its channelRegistered() implementation.
    channel.eventLoop().execute(new Runnable() {
        @Override//from w w  w.j  a  v a2 s  . c  om
        public void run() {
            if (regFuture.isSuccess()) {
                channel.bind(localAddress, promise).addListener(ChannelFutureListener.CLOSE_ON_FAILURE);
            } else {
                promise.setFailure(regFuture.cause());
            }
        }
    });
}

---

From source file:com.tongbanjie.tarzan.rpc.netty.NettyRpcAbstract.java

License:Apache License

public RpcCommand invokeSyncImpl(final Channel channel, final RpcCommand request, final long timeoutMillis)
        throws InterruptedException, RpcTooMuchRequestException, RpcSendRequestException, RpcTimeoutException {
    //check channel writable
    if (!channel.isWritable()) {
        throw new RpcTooMuchRequestException(
                String.format("Invoke request too much, the channel[%s] is not writable", channel.toString()));
    }/*ww  w. j  a v  a2 s.c  om*/

    final int opaque = request.getOpaque();

    try {
        final ResponseFuture responseFuture = new ResponseFuture(opaque, timeoutMillis, null, null);
        this.responseTable.put(opaque, responseFuture);
        final SocketAddress addr = channel.remoteAddress();
        channel.writeAndFlush(request).addListener(new ChannelFutureListener() {
            @Override
            public void operationComplete(ChannelFuture f) throws Exception {
                if (f.isSuccess()) {
                    responseFuture.setSendRequestOK(true);
                    return;
                } else {
                    responseFuture.setSendRequestOK(false);
                }

                responseTable.remove(opaque);
                responseFuture.setCause(f.cause());
                responseFuture.putResponse(null);
                LOGGER.warn("send a request command to channel <" + addr + "> failed.");
            }
        });

        RpcCommand responseCommand = responseFuture.waitResponse(timeoutMillis);
        if (null == responseCommand) {
            if (responseFuture.isSendRequestOK()) {
                throw new RpcTimeoutException(RpcHelper.parseSocketAddressAddr(addr), timeoutMillis,
                        responseFuture.getCause());
            } else {
                throw new RpcSendRequestException(RpcHelper.parseSocketAddressAddr(addr),
                        responseFuture.getCause());
            }
        }

        return responseCommand;
    } finally {
        this.responseTable.remove(opaque);
    }
}

---

From source file:com.tongbanjie.tarzan.rpc.netty.NettyRpcClient.java

License:Apache License

private Channel createChannel(final String addr) throws InterruptedException {
    ChannelWrapper cw = this.channelTables.get(addr);
    if (cw != null && cw.isOK()) {
        return cw.getChannel();
    }/*  w  ww  . j  av  a  2 s  .co m*/

    if (this.lockChannelTables.tryLock(LOCK_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS)) {
        try {
            boolean createNewConnection = false;
            cw = this.channelTables.get(addr);
            if (cw != null) {

                if (cw.isOK()) {
                    return cw.getChannel();
                }

                else if (!cw.getChannelFuture().isDone()) {
                    createNewConnection = false;
                }

                else {
                    this.channelTables.remove(addr);
                    createNewConnection = true;
                }
            }

            else {
                createNewConnection = true;
            }

            if (createNewConnection) {
                ChannelFuture channelFuture = this.bootstrap.connect(RpcHelper.string2SocketAddress(addr));
                LOGGER.info("createChannel: begin to connect remote host[{}] asynchronously", addr);
                cw = new ChannelWrapper(channelFuture);
                this.channelTables.put(addr, cw);
            }
        } catch (Exception e) {
            LOGGER.error("createChannel: create channel exception", e);
        } finally {
            this.lockChannelTables.unlock();
        }
    } else {
        LOGGER.warn("createChannel: try to lock channel table, but timeout, {}ms", LOCK_TIMEOUT_MILLIS);
    }

    if (cw != null) {
        ChannelFuture channelFuture = cw.getChannelFuture();
        if (channelFuture.awaitUninterruptibly(this.nettyClientConfig.getConnectTimeoutMillis())) {
            if (cw.isOK()) {
                LOGGER.info("createChannel: connect remote host[{}] success, {}", addr,
                        channelFuture.toString());
                return cw.getChannel();
            } else {
                LOGGER.warn(
                        "createChannel: connect remote host[" + addr + "] failed, " + channelFuture.toString(),
                        channelFuture.cause());
            }
        } else {
            LOGGER.warn("createChannel: connect remote host[{}] timeout {}ms, {}", addr,
                    this.nettyClientConfig.getConnectTimeoutMillis(), channelFuture.toString());
        }
    }

    return null;
}

---

From source file:com.turo.pushy.apns.ApnsClientHandler.java

License:Open Source License

@Override
public void userEventTriggered(final ChannelHandlerContext context, final Object event) throws Exception {
    if (event instanceof IdleStateEvent) {
        log.trace("Sending ping due to inactivity.");

        this.encoder().writePing(context, false, System.currentTimeMillis(), context.newPromise())
                .addListener(new GenericFutureListener<ChannelFuture>() {

                    @Override//  w  ww .  j a  va2 s.co  m
                    public void operationComplete(final ChannelFuture future) {
                        if (!future.isSuccess()) {
                            log.debug("Failed to write PING frame.", future.cause());
                            future.channel().close();
                        }
                    }
                });

        this.pingTimeoutFuture = context.channel().eventLoop().schedule(new Runnable() {

            @Override
            public void run() {
                log.debug("Closing channel due to ping timeout.");
                context.channel().close();
            }
        }, pingTimeoutMillis, TimeUnit.MILLISECONDS);

        this.flush(context);
    }

    super.userEventTriggered(context, event);
}

---

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