Example usage for io.netty.channel ChannelFuture channel

Introduction

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

Prototype

Channel channel();

Source Link

Document

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

Usage

From source file:c5db.regionserver.RegionServerService.java

License:Apache License

@Override
protected void doStart() {
    fiber.start();/*w w w  . j a va 2s.c o  m*/

    fiber.execute(() -> {
        // we need the tablet module:
        ListenableFuture<C5Module> f = server.getModule(ModuleType.Tablet);
        Futures.addCallback(f, new FutureCallback<C5Module>() {
            @Override
            public void onSuccess(final C5Module result) {
                tabletModule = (TabletModule) result;
                bootstrap.group(acceptGroup, workerGroup).option(ChannelOption.SO_REUSEADDR, true)
                        .childOption(ChannelOption.TCP_NODELAY, true).channel(NioServerSocketChannel.class)
                        .childHandler(new ChannelInitializer<SocketChannel>() {
                            @Override
                            protected void initChannel(SocketChannel ch) throws Exception {
                                ChannelPipeline p = ch.pipeline();
                                p.addLast("http-server-codec", new HttpServerCodec());
                                p.addLast("http-agg",
                                        new HttpObjectAggregator(C5ServerConstants.MAX_CALL_SIZE));
                                p.addLast("websocket-agg",
                                        new WebSocketFrameAggregator(C5ServerConstants.MAX_CALL_SIZE));
                                p.addLast("decoder", new WebsocketProtostuffDecoder("/websocket"));
                                p.addLast("encoder", new WebsocketProtostuffEncoder());
                                p.addLast("handler", new RegionServerHandler(RegionServerService.this));
                            }
                        });

                bootstrap.bind(port).addListener(new ChannelFutureListener() {
                    @Override
                    public void operationComplete(ChannelFuture future) throws Exception {
                        if (future.isSuccess()) {
                            listenChannel = future.channel();
                            notifyStarted();
                        } else {
                            LOG.error("Unable to find Region Server to {} {}", port, future.cause());
                            notifyFailed(future.cause());
                        }
                    }
                });
            }

            @Override
            public void onFailure(Throwable t) {
                notifyFailed(t);
            }
        }, fiber);
    });
}

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From source file:c5db.replication.ReplicatorService.java

License:Apache License

@FiberOnly
private void handleOutgoingMessage(final Request<RpcRequest, RpcWireReply> message) {
    final RpcRequest request = message.getRequest();
    final long to = request.to;

    if (to == nodeId) {
        handleLoopBackMessage(message);//from  w w  w.j  a  v a 2  s. c  om
        return;
    }

    // check to see if we have a connection:
    Channel channel = connections.get(to);
    if (channel != null && channel.isOpen()) {
        sendMessageAsync(message, channel);
        return;
    } else if (channel != null) {
        // stale?
        LOG.debug("Removing stale !isOpen channel from connections.get() for peer {}", to);
        connections.remove(to);
    }

    NodeInfoRequest nodeInfoRequest = new NodeInfoRequest(to, ModuleType.Replication);
    LOG.debug("node {} sending node info request {} ", nodeId, nodeInfoRequest);
    AsyncRequest.withOneReply(fiber, discoveryModule.getNodeInfo(), nodeInfoRequest,
            new Callback<NodeInfoReply>() {
                @SuppressWarnings("RedundantCast")
                @FiberOnly
                @Override
                public void onMessage(NodeInfoReply nodeInfoReply) {
                    if (!nodeInfoReply.found) {
                        LOG.debug("Can't find the info for the peer {}", to);
                        // TODO signal TCP/transport layer failure in a better way
                        //message.reply(null);
                        return;
                    }

                    LOG.debug("node {} got node info for node {} reply {} ", nodeId, to, nodeInfoReply);
                    // what if existing outgoing connection attempt?
                    Channel channel = connections.get(to);
                    if (channel != null && channel.isOpen()) {
                        sendMessageAsync(message, channel);
                        return;
                    } else if (channel != null) {
                        LOG.debug("Removing stale2 !isOpen channel from connections.get() for peer {}", to);
                        connections.remove(to);
                    }

                    // ok so we connect now:
                    ChannelFuture channelFuture = outgoingBootstrap.connect(nodeInfoReply.addresses.get(0),
                            nodeInfoReply.port);
                    LOG.trace("Connecting to peer {} at address {} port {}", to, nodeInfoReply.addresses.get(0),
                            nodeInfoReply.port);

                    // the channel might not be open, so defer the write.
                    connections.put(to, channelFuture.channel());
                    channelFuture.channel().closeFuture()
                            .addListener((ChannelFutureListener) future -> fiber.execute(() -> {
                                // remove only THIS channel. It might have been removed prior so.
                                connections.remove(to, future.channel());
                            }));

                    // funny hack, if the channel future is already open, we execute immediately!
                    channelFuture.addListener((ChannelFutureListener) future -> {
                        if (future.isSuccess()) {
                            sendMessageAsync(message, future.channel());
                        }
                    });
                }
            },
            // If the NodeInfoRequest times out:
            ReplicatorConstants.REPLICATOR_NODE_INFO_REQUEST_TIMEOUT_MILLISECONDS, TimeUnit.MILLISECONDS,
            () -> LOG.warn("node info request timeout {} ", nodeInfoRequest));
}

---

From source file:cat.tbq.hospital.nio.echoExample.EchoClient.java

License:Apache License

public static void main(String[] args) throws Exception {
    // Configure SSL.git
    final SslContext sslCtx;
    if (SSL) {//from  w  w  w  .java  2s.  co m
        sslCtx = SslContextBuilder.forClient().trustManager(InsecureTrustManagerFactory.INSTANCE).build();
    } else {
        sslCtx = null;
    }

    // Configure the client.
    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 {
                        ChannelPipeline p = ch.pipeline();
                        if (sslCtx != null) {
                            p.addLast(sslCtx.newHandler(ch.alloc(), HOST, PORT));
                        }
                        //p.addLast(new LoggingHandler(LogLevel.INFO));
                        p.addLast(new EchoClientHandler());
                        //                            p.addLast(new EchoClient2Handler());
                    }
                });

        // Start the client.
        ChannelFuture f = b.connect(HOST, PORT).sync();

        // Wait until the connection is closed.
        f.channel().closeFuture().sync();
    } finally {
        // Shut down the event loop to terminate all threads.
        group.shutdownGracefully();
    }
}

---

From source file:cat.tbq.hospital.nio.echoExample.EchoServer.java

License:Apache License

public static void main(String[] args) throws Exception {
    // Configure SSL.
    final SslContext sslCtx;
    if (SSL) {/*w ww. j  a  v a  2  s  .  c  o  m*/
        SelfSignedCertificate ssc = new SelfSignedCertificate();
        sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();

    } else {
        sslCtx = null;

    }
    // Configure the server.
    EventLoopGroup bossGroup = new NioEventLoopGroup(1);
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .option(ChannelOption.SO_BACKLOG, 100).handler(new LoggingHandler(LogLevel.INFO))
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ChannelPipeline p = ch.pipeline();
                        if (sslCtx != null) {
                            p.addLast(sslCtx.newHandler(ch.alloc()));

                        }
                        //p.addLast(new LoggingHandler(LogLevel.INFO));
                        p.addLast(new EchoServerHandler());
                    }
                });
        // Start the server.
        ChannelFuture f = b.bind(PORT).sync();
        // Wait until the server socket is closed.
        f.channel().closeFuture().sync();
    } finally {
        // Shut down all event loops to terminate all threads.
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}

---

From source file:cc.agentx.client.net.nio.XClient.java

License:Apache License

public void start() {
    Configuration config = Configuration.INSTANCE;
    InternalLoggerFactory.setDefaultFactory(Slf4JLoggerFactory.INSTANCE);
    bossGroup = new NioEventLoopGroup(1);
    workerGroup = new NioEventLoopGroup();
    try {/*from w  ww . ja v  a 2s  . co  m*/
        ServerBootstrap bootstrap = new ServerBootstrap();
        bootstrap.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel socketChannel) throws Exception {
                        socketChannel.pipeline().addLast("logging", new LoggingHandler(LogLevel.DEBUG))
                                .addLast(new SocksInitRequestDecoder()).addLast(new SocksMessageEncoder())
                                .addLast(new Socks5Handler()).addLast(Status.TRAFFIC_HANDLER);
                    }
                });
        log.info("\tStartup {}-{}-client [{}{}]", Constants.APP_NAME, Constants.APP_VERSION, config.getMode(),
                config.getMode().equals("socks5") ? "" : ":" + config.getProtocol());
        ChannelFuture future = bootstrap.bind(config.getLocalHost(), config.getLocalPort()).sync();
        future.addListener(
                future1 -> log.info("\tListening at {}:{}...", config.getLocalHost(), config.getLocalPort()));
        future.channel().closeFuture().sync();
    } catch (Exception e) {
        log.error("\tSocket bind failure ({})", e.getMessage());
    } finally {
        log.info("\tShutting down");
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}

---

From source file:cc.agentx.server.net.nio.XServer.java

License:Apache License

public void start() {
    Configuration config = Configuration.INSTANCE;
    InternalLoggerFactory.setDefaultFactory(Slf4JLoggerFactory.INSTANCE);
    EventLoopGroup bossGroup = new NioEventLoopGroup(1);
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {//  w  w  w . j  a v  a2 s .  c  o  m
        ServerBootstrap bootstrap = new ServerBootstrap();
        bootstrap.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    protected void initChannel(SocketChannel socketChannel) throws Exception {
                        socketChannel.pipeline().addLast("logging", new LoggingHandler(LogLevel.DEBUG))
                                .addLast(new XConnectHandler());
                        if (config.getReadLimit() != 0 || config.getWriteLimit() != 0) {
                            socketChannel.pipeline().addLast(
                                    new GlobalTrafficShapingHandler(Executors.newScheduledThreadPool(1),
                                            config.getWriteLimit(), config.getReadLimit()));
                        }
                    }
                });
        log.info("\tStartup {}-{}-server [{}]", Constants.APP_NAME, Constants.APP_VERSION,
                config.getProtocol());
        ChannelFuture future = bootstrap.bind(config.getHost(), config.getPort()).sync();
        future.addListener(future1 -> log.info("\tListening at {}:{}...", config.getHost(), config.getPort()));
        future.channel().closeFuture().sync();
    } catch (Exception e) {
        log.error("\tSocket bind failure ({})", e.getMessage());
    } finally {
        log.info("\tShutting down and recycling...");
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
        Configuration.shutdownRelays();
    }
    System.exit(0);
}

---

From source file:cc.sharper.netty.delimiter.EchoClient.java

License:Apache License

public void connect(int port, String host) throws Exception {
    // ?NIO//from  w  w  w. j ava2 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 {
                        //? 
                        ByteBuf delimiter = Unpooled.copiedBuffer("$_".getBytes());
                        ch.pipeline().addLast(new DelimiterBasedFrameDecoder(1024, delimiter));

                        ch.pipeline().addLast(new StringDecoder());
                        ch.pipeline().addLast(new EchoClientHandler());
                    }
                });

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

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

---

From source file:cc.sharper.netty.TimeClient.java

License:Apache License

public void connect(int port, String host) throws Exception {
    // ?NIO//from w w  w . ja  v  a2 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(new TimeClientHandler());
                    }
                });

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

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

---

From source file:cc.sharper.netty.TimeServer.java

License:Apache License

public void bind(int port) throws Exception {
    // ??NIO SocketChannel
    EventLoopGroup bossGroup = new NioEventLoopGroup();
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {// w ww  .  j a  v a2  s .c  om
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .option(ChannelOption.SO_BACKLOG, 1024).childHandler(new ChildChannelHandler());//io
        // ???
        ChannelFuture f = b.bind(port).sync();

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

---

From source file:ch.ethz.globis.distindex.middleware.net.IndexMiddleware.java

License:Open Source License

@Override
public void run() {

    bossGroup = new NioEventLoopGroup();
    workerGroup = new NioEventLoopGroup();

    balancingDaemon.run();/*  w  w  w  .  j a v  a  2s . c  o m*/
    try {
        //initialize the server channels
        ServerBootstrap b = initServerBootstrap(handler);
        ChannelFuture f = b.bind(port).sync();

        //register as a viable host to the cluster service
        clusterService.connect();
        if (joinedAsFree) {
            clusterService.registerFreeHost(getHostId());
        } else {
            clusterService.registerHost(getHostId());
        }
        isRunning = true;

        f.channel().closeFuture().sync();
    } catch (InterruptedException ie) {
        LOG.error("An error occurred while operating on the channel.", ie);
        ie.printStackTrace();
    } finally {
        closeEventLoops();
        isRunning = false;
        //disconnect the cluster service
        clusterService.disconnect();
    }
}

---

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