Example usage for io.netty.channel ChannelFuture channel

List of usage examples for io.netty.channel ChannelFuture channel

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Introduction

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

Prototype

Channel channel();

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Document

Returns a channel where the I/O operation associated with this future takes place.

Usage

From source file:com.vmware.xenon.common.http.netty.NettyChannelPool.java

License:Open Source License

/**
 * When using HTTP/2, we have to wait for the settings to be negotiated before we can send
 * data. We wait for a promise that comes from the HTTP client channel pipeline
 *//*from  w  ww  .  java2s. c o m*/
private void waitForSettings(Channel ch, NettyChannelContext contextFinal, Operation request,
        NettyChannelGroup group) {
    ChannelPromise settingsPromise = ch.attr(NettyChannelContext.SETTINGS_PROMISE_KEY).get();
    settingsPromise.addListener(new ChannelFutureListener() {
        @Override
        public void operationComplete(ChannelFuture future) throws Exception {

            if (future.isSuccess()) {

                // retrieve pending operations
                List<Operation> pendingOps = new ArrayList<>();
                synchronized (group) {
                    contextFinal.setOpenInProgress(false);
                    contextFinal.setChannel(future.channel()).setOperation(request);
                    pendingOps.addAll(group.pendingRequests);
                    group.pendingRequests.clear();
                }

                sendAfterConnect(future.channel(), contextFinal, request, group);

                // trigger pending operations
                for (Operation pendingOp : pendingOps) {
                    pendingOp.setSocketContext(contextFinal);
                    pendingOp.complete();
                }

            } else {
                returnOrClose(contextFinal, true);
                fail(request, future.cause());
            }
        }
    });
}

From source file:com.wangsan.study.netty.codec.serializable.netty.SubReqClient.java

License:Apache License

public void connect(int port, String host) throws Exception {
    // ?NIO//ww  w .  ja va  2 s  . c o  m
    EventLoopGroup group = new NioEventLoopGroup();
    try {
        Bootstrap b = new Bootstrap();
        b.group(group).channel(NioSocketChannel.class).option(ChannelOption.TCP_NODELAY, true)
                .handler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ch.pipeline().addLast(
                                // max?
                                new ObjectDecoder(1024,
                                        ClassResolvers.cacheDisabled(this.getClass().getClassLoader())));
                        ch.pipeline().addLast(new ObjectEncoder());
                        ch.pipeline().addLast(new SubReqClientHandler());
                    }
                });

        // ??
        ChannelFuture f = b.connect(host, port).sync();

        // 
        f.channel().closeFuture().sync();
    } finally {
        // NIO
        group.shutdownGracefully();
    }
}

From source file:com.weibo.api.motan.transport.netty.NettyChannel.java

License:Apache License

@Override
public synchronized boolean open() {
    if (isAvailable()) {
        LoggerUtil.warn("the channel already open, local: " + localAddress + " remote: " + remoteAddress
                + " url: " + nettyClient.getUrl().getUri());
        return true;
    }//from w  ww .j  ava  2 s  . c om

    try {
        ChannelFuture channleFuture = nettyClient.getBootstrap()
                .connect(new InetSocketAddress(nettyClient.getUrl().getHost(), nettyClient.getUrl().getPort()));

        long start = System.currentTimeMillis();

        int timeout = nettyClient.getUrl().getIntParameter(URLParamType.connectTimeout.getName(),
                URLParamType.connectTimeout.getIntValue());
        if (timeout <= 0) {
            throw new MotanFrameworkException(
                    "NettyClient init Error: timeout(" + timeout + ") <= 0 is forbid.",
                    MotanErrorMsgConstant.FRAMEWORK_INIT_ERROR);
        }
        // ??connectTimeout
        boolean result = channleFuture.awaitUninterruptibly(timeout, TimeUnit.MILLISECONDS);
        boolean success = channleFuture.isSuccess();

        if (result && success) {
            channel = channleFuture.channel();
            if (channel.localAddress() != null && channel.localAddress() instanceof InetSocketAddress) {
                localAddress = (InetSocketAddress) channel.localAddress();
            }

            state = ChannelState.ALIVE;
            return true;
        }
        boolean connected = false;
        if (channleFuture.channel() != null) {
            connected = channleFuture.channel().isActive();
        }

        if (channleFuture.cause() != null) {
            channleFuture.cancel(false);
            throw new MotanServiceException(
                    "NettyChannel failed to connect to server, url: " + nettyClient.getUrl().getUri()
                            + ", result: " + result + ", success: " + success + ", connected: " + connected,
                    channleFuture.cause());
        } else {
            channleFuture.cancel(false);
            throw new MotanServiceException("NettyChannel connect to server timeout url: "
                    + nettyClient.getUrl().getUri() + ", cost: " + (System.currentTimeMillis() - start)
                    + ", result: " + result + ", success: " + success + ", connected: " + connected);
        }
    } catch (MotanServiceException e) {
        throw e;
    } catch (Exception e) {
        throw new MotanServiceException(
                "NettyChannel failed to connect to server, url: " + nettyClient.getUrl().getUri(), e);
    } finally {
        if (!state.isAliveState()) {
            nettyClient.incrErrorCount();
        }
    }
}

From source file:com.weibo.api.motan.transport.netty.NettyServer.java

License:Apache License

@Override
public synchronized boolean open() {
    if (isAvailable()) {
        LoggerUtil.warn("NettyServer ServerChannel already Open: url=" + url);
        return true;
    }/*ww w.j ava2  s .c  om*/

    LoggerUtil.info("NettyServer ServerChannel start Open: url=" + url);

    initServerBootstrap();

    ChannelFuture channelFuture = bootstrap.bind(url.getPort());

    serverChannel = (ServerChannel) channelFuture.channel();

    state = ChannelState.ALIVE;

    StatsUtil.registryStatisticCallback(this);
    LoggerUtil.info("NettyServer ServerChannel finish Open: url=" + url);

    return state.isAliveState();
}

From source file:com.weibo.api.motan.transport.netty4.client.NettyChannel.java

License:Apache License

@Override
public synchronized boolean open() {
    if (isAvailable()) {
        LoggerUtil.warn("the channel already open, local: " + localAddress + " remote: " + remoteAddress
                + " url: " + nettyClient.getUrl().getUri());
        return true;
    }//  ww  w .  j a  v a  2  s. c o  m

    try {
        ChannelFuture channelFuture = nettyClient.getBootstrap()
                .connect(new InetSocketAddress(nettyClient.getUrl().getHost(), nettyClient.getUrl().getPort()));

        long start = System.currentTimeMillis();

        int timeout = nettyClient.getUrl().getIntParameter(URLParamType.connectTimeout.getName(),
                URLParamType.connectTimeout.getIntValue());
        if (timeout <= 0) {
            throw new MotanFrameworkException(
                    "Netty4Client init Error: timeout(" + timeout + ") <= 0 is forbid.",
                    MotanErrorMsgConstant.FRAMEWORK_INIT_ERROR);
        }
        // ??connectTimeout
        boolean result = channelFuture.awaitUninterruptibly(timeout, TimeUnit.MILLISECONDS);
        boolean success = channelFuture.isSuccess();

        if (result && success) {
            channel = channelFuture.channel();
            if (channel.localAddress() != null && channel.localAddress() instanceof InetSocketAddress) {
                localAddress = (InetSocketAddress) channel.localAddress();
            }

            state = ChannelState.ALIVE;
            return true;
        }
        boolean connected = false;
        if (channelFuture.channel() != null) {
            connected = channelFuture.channel().isOpen();
        }

        if (channelFuture.cause() != null) {
            channelFuture.cancel(true);
            throw new MotanServiceException(
                    "NettyChannel failed to connect to server, url: " + nettyClient.getUrl().getUri()
                            + ", result: " + result + ", success: " + success + ", connected: " + connected,
                    channelFuture.cause());
        } else {
            channelFuture.cancel(true);
            throw new MotanServiceException("NettyChannel connect to server timeout url: "
                    + nettyClient.getUrl().getUri() + ", cost: " + (System.currentTimeMillis() - start)
                    + ", result: " + result + ", success: " + success + ", connected: " + connected);
        }
    } catch (MotanServiceException e) {
        throw e;
    } catch (Exception e) {
        throw new MotanServiceException(
                "NettyChannel failed to connect to server, url: " + nettyClient.getUrl().getUri(), e);
    } finally {
        if (!state.isAliveState()) {
            nettyClient.incrErrorCount();
        }
    }
}

From source file:com.weibo.api.motan.transport.netty4.http.Netty4HttpServer.java

License:Apache License

@Override
public boolean open() {
    if (isAvailable()) {
        return true;
    }/*from w  w  w . j a va 2 s.c om*/
    if (channel != null) {
        channel.close();
    }
    if (bossGroup == null) {
        bossGroup = new NioEventLoopGroup();
        workerGroup = new NioEventLoopGroup();
    }
    boolean shareChannel = url.getBooleanParameter(URLParamType.shareChannel.getName(),
            URLParamType.shareChannel.getBooleanValue());
    // TODO max connection protect
    int maxServerConnection = url.getIntParameter(URLParamType.maxServerConnection.getName(),
            URLParamType.maxServerConnection.getIntValue());
    int workerQueueSize = url.getIntParameter(URLParamType.workerQueueSize.getName(), 500);

    int minWorkerThread = 0, maxWorkerThread = 0;

    if (shareChannel) {
        minWorkerThread = url.getIntParameter(URLParamType.minWorkerThread.getName(),
                MotanConstants.NETTY_SHARECHANNEL_MIN_WORKDER);
        maxWorkerThread = url.getIntParameter(URLParamType.maxWorkerThread.getName(),
                MotanConstants.NETTY_SHARECHANNEL_MAX_WORKDER);
    } else {
        minWorkerThread = url.getIntParameter(URLParamType.minWorkerThread.getName(),
                MotanConstants.NETTY_NOT_SHARECHANNEL_MIN_WORKDER);
        maxWorkerThread = url.getIntParameter(URLParamType.maxWorkerThread.getName(),
                MotanConstants.NETTY_NOT_SHARECHANNEL_MAX_WORKDER);
    }
    final int maxContentLength = url.getIntParameter(URLParamType.maxContentLength.getName(),
            URLParamType.maxContentLength.getIntValue());
    final NettyHttpRequestHandler handler = new NettyHttpRequestHandler(this, messageHandler,
            new ThreadPoolExecutor(minWorkerThread, maxWorkerThread, 15, TimeUnit.SECONDS,
                    new ArrayBlockingQueue<Runnable>(workerQueueSize)));

    ServerBootstrap b = new ServerBootstrap();
    b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
            .childHandler(new ChannelInitializer<SocketChannel>() {
                @Override
                public void initChannel(SocketChannel ch) throws Exception {
                    ch.pipeline().addLast("http-decoder", new HttpRequestDecoder());
                    ch.pipeline().addLast("http-aggregator", new HttpObjectAggregator(maxContentLength));
                    ch.pipeline().addLast("http-encoder", new HttpResponseEncoder());
                    ch.pipeline().addLast("http-chunked", new ChunkedWriteHandler());
                    ch.pipeline().addLast("serverHandler", handler);
                }
            }).option(ChannelOption.SO_BACKLOG, 1024).childOption(ChannelOption.SO_KEEPALIVE, false);

    ChannelFuture f;
    try {
        f = b.bind(url.getPort()).sync();
        channel = f.channel();
    } catch (InterruptedException e) {
        LoggerUtil.error("init http server fail.", e);
        return false;
    }
    state = ChannelState.ALIVE;
    StatsUtil.registryStatisticCallback(this);
    LoggerUtil.info("Netty4HttpServer ServerChannel finish Open: url=" + url);
    return true;
}

From source file:com.weibo.yar.yarserver.NettyYarServer.java

License:Apache License

public void start(int port) throws Exception {
    EventLoopGroup bossGroup = new NioEventLoopGroup();
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {// w  w  w .  j av a 2 s .  com
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ch.pipeline().addLast("http-decoder", new HttpRequestDecoder());
                        ch.pipeline().addLast("http-aggregator", new HttpObjectAggregator(65536));
                        ch.pipeline().addLast("http-encoder", new HttpResponseEncoder());
                        ch.pipeline().addLast("http-chunked", new ChunkedWriteHandler());
                        ch.pipeline().addLast("serverHandler", new HttpServerHandler());
                    }
                }).option(ChannelOption.SO_BACKLOG, 1024).childOption(ChannelOption.SO_KEEPALIVE, true);

        ChannelFuture f = b.bind(port).sync();

        f.channel().closeFuture().sync();
    } finally {
        workerGroup.shutdownGracefully();
        bossGroup.shutdownGracefully();
    }
}

From source file:com.whizzosoftware.foscam.camera.discovery.FoscamCameraDiscovery.java

License:Open Source License

/**
 * Start the discovery process./*from w ww.  j a va  2 s  .  c o m*/
 *
 * @throws IOException on failure
 */
public void start() throws IOException {
    searchRequestRunnable = new SearchRequestRunnable(this);

    // set up the inbound channel handler
    bootstrap.handler(new ChannelInitializer<Channel>() {
        @Override
        protected void initChannel(Channel channel) throws Exception {
            ChannelPipeline pipeline = channel.pipeline();
            pipeline.addLast(new DatagramToByteBufHandler()); // convert an incoming DatagramPacket into a ByteBuf
            pipeline.addLast(new OrderDecoder()); // convert an incoming ByteBuf into an Order
            pipeline.addLast(new InboundOrderHandler(listener)); // handle incoming Orders
        }
    });

    // bind to the address
    ChannelFuture cf = bootstrap.bind(new InetSocketAddress(0));
    cf.addListener(new ChannelFutureListener() {
        @Override
        public void operationComplete(ChannelFuture channelFuture) throws Exception {
            if (channelFuture.isSuccess()) {
                channel = (DatagramChannel) channelFuture.channel();

                // perform initial search request
                group.execute(searchRequestRunnable);

                // schedule two quick follow-up search requests to make sure a camera didn't miss the first request
                group.schedule(searchRequestRunnable, SEARCH_REQUEST_INITIAL_FREQUENCY_SECONDS,
                        TimeUnit.SECONDS);
                group.schedule(searchRequestRunnable, SEARCH_REQUEST_INITIAL_FREQUENCY_SECONDS * 2,
                        TimeUnit.SECONDS);

                // set up a recurring search request so we can keep track of cameras coming/going
                searchFuture = group.scheduleAtFixedRate(searchRequestRunnable,
                        SEARCH_REQUEST_INITIAL_FREQUENCY_SECONDS * 2 + getSearchRequestFrequencySeconds,
                        getSearchRequestFrequencySeconds, TimeUnit.SECONDS);
            } else {
                logger.error("Bind attempt failed", channelFuture.cause());
            }
        }
    });
}

From source file:com.whizzosoftware.hobson.api.plugin.channel.AbstractChannelObjectPlugin.java

License:Open Source License

/**
 * Connect the channel.//  w  w w .  j a  v a 2  s. c o  m
 *
 * @param b a Netty Bootstrap object
 */
synchronized private void connect(Bootstrap b) {
    logger.debug("connect()");
    if (connectionState == State.NOT_CONNECTED) {
        logger.debug("Attempting to connect");
        connectionState = State.CONNECTING;
        b.connect(socketAddress).addListener(new ChannelFutureListener() {
            @Override
            public void operationComplete(ChannelFuture channelFuture) throws Exception {
                if (channelFuture.isSuccess()) {
                    logger.debug("Connection established");
                    connectionState = State.CONNECTED;

                    // save the channel
                    AbstractChannelObjectPlugin.this.channel = channelFuture.channel();

                    // set a close listener to notify the plugin subclass when the channel has closed
                    channel.closeFuture().addListener(new ChannelFutureListener() {
                        @Override
                        public void operationComplete(ChannelFuture channelFuture) throws Exception {
                            logger.info("Connection was closed");
                            channel = null;
                            connectionState = State.NOT_CONNECTED;
                            executeInEventLoop(new Runnable() {
                                @Override
                                public void run() {
                                    onChannelDisconnected();
                                }
                            });
                            if (isRunning) {
                                scheduleReconnect(channelFuture.channel().eventLoop());
                            }
                        }
                    });

                    executeInEventLoop(new Runnable() {
                        @Override
                        public void run() {
                            onChannelConnected();
                        }
                    });
                } else {
                    logger.warn("Connection attempt to " + socketAddress.toString() + " failed",
                            channelFuture.cause());
                    connectionState = State.NOT_CONNECTED;
                    if (isRunning) {
                        scheduleReconnect(channelFuture.channel().eventLoop());
                    }
                }
            }
        });
    } else {
        logger.debug("Ignoring connect request due to state: " + connectionState);
    }
}

From source file:com.whizzosoftware.hobson.hub.websockets.WebSocketsPlugin.java

License:Open Source License

@Override
public void onStartup(PropertyContainer config) {
    bossGroup = new NioEventLoopGroup(1);
    workerGroup = new NioEventLoopGroup();
    ServerBootstrap b = new ServerBootstrap();

    b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
            .handler(new LoggingHandler(LogLevel.INFO))
            .childHandler(new WebSocketServerInitializer(clientChannels, getAccessManager()));

    b.bind(PORT).addListener(new GenericFutureListener<ChannelFuture>() {
        @Override/*from   ww w .j a  v a  2  s.com*/
        public void operationComplete(ChannelFuture future) throws Exception {
            WebSocketsPlugin.this.channel = future.channel();
            logger.debug("WebSocket server started at port {}", PORT);
            getHubManager().getLocalManager().setWebSocketInfo("ws", PORT, null);
        }
    });
}