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();

Source Link

Document

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

Usage

From source file:com.necla.simba.server.gateway.server.backend.BackendConnector.java

License:Apache License

public void connect(Properties props, List<String> backends, SubscriptionManager subscriptionManager,
        ClientAuthenticationManager cam) throws URISyntaxException, IOException {
    this.subscriptionManager = subscriptionManager;
    this.cam = cam;
    hasher = new ConsistentHash(backends);

    int nthreads = Integer.parseInt(props.getProperty("backend.server.thread_count", "-1"));

    Bootstrap bootstrap = new Bootstrap();
    bootstrap.group(nthreads == -1 ? new NioEventLoopGroup() : new NioEventLoopGroup(nthreads))
            .handler(new BackendConnectorIntializer()).channel(NioSocketChannel.class);
    try {//from  w  ww.j a  va2 s .c o  m
        for (String s : backends) {
            URI uri = new URI("my://" + s);
            if (uri.getHost() == null || uri.getPort() == -1)
                throw new URISyntaxException(s, "Both host and port must be specified for host");
            LOG.debug("Connecting to: " + uri.getHost() + ":" + uri.getPort());

            ChannelFuture cf = bootstrap.connect(uri.getHost(), uri.getPort()).sync();
            if (cf.isSuccess())
                this.backends.put(s, cf.channel());
            else
                throw new IOException("Could not connect to backend " + s + ":" + uri.getPort());

        }
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

From source file:com.necla.simba.server.gateway.server.frontend.FrontendServer.java

License:Apache License

public FrontendServer(Properties props, BackendConnector backend, StatsCollector stats,
        SubscriptionManager subscriptionManager, ClientAuthenticationManager cam) throws Exception {
    this.backend = backend;

    this.stats = stats;
    assert this.stats != null : "stats must be there already";
    this.subscriptionManager = subscriptionManager;
    this.cam = cam;
    ServerBootstrap bootstrap = new ServerBootstrap();
    bootstrap.group(new NioEventLoopGroup(), new NioEventLoopGroup()).channel(NioServerSocketChannel.class)
            .childHandler(new FrontendServerInitializer()).option(ChannelOption.SO_BACKLOG, 128);
    int port = Integer.parseInt(props.getProperty("port", "9000"));
    ChannelFuture f = bootstrap.bind(port).sync();
    f.channel().closeFuture().sync();
}

From source file:com.netty.fileTest.file.FileReaderClient.java

License:Apache License

public static void main(String[] args) throws Exception {

    // Configure the client.
    EventLoopGroup group = new NioEventLoopGroup();
    try {/*w w  w  . j a  v a2 s .  c o m*/
        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();
                        p.addLast(new FileReaderClientHandler());
                    }
                });

        // Start the client.
        ChannelFuture f = b.connect("127.0.0.1", 8007).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:com.netty.fileTest.file.FileSenderServer.java

License:Apache License

public static void main(String[] args) throws Exception {

    // Configure the server.
    EventLoopGroup bossGroup = new NioEventLoopGroup(1);
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {//from   w w w .  ja  v  a 2  s. c  o m
        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();
                        p.addLast(new StringEncoder(CharsetUtil.UTF_8), new LineBasedFrameDecoder(8192),
                                new StringDecoder(CharsetUtil.UTF_8), new ChunkedWriteHandler(),
                                new FileSenderServerHandler());
                    }
                });

        // 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:com.netty.grpc.proxy.demo.handler.GrpcProxyBackendHandler.java

License:Apache License

private void forward(final ChannelHandlerContext ctx, ByteBuf byteBuf) {
    if (inboundChannel.isActive()) {
        inboundChannel.writeAndFlush(byteBuf).addListener(new ChannelFutureListener() {
            public void operationComplete(ChannelFuture future) {
                if (future.isSuccess()) {
                    ctx.channel().read();
                } else {
                    future.channel().close();
                }/*from w w  w .  j a  v  a  2 s  .  co  m*/
            }
        });
    } else {
    }
}

From source file:com.netty.grpc.proxy.demo.handler.GrpcProxyBackendHandler.java

License:Apache License

private void handleSettingFrame(final ChannelHandlerContext ctx, Http2Flags flags) {
    ByteBufAllocator alloc = ctx.alloc();
    ByteBuf byteBuf = alloc.buffer();/*from   w  w w  .j ava  2 s.  c o m*/
    if (!flags.ack()) {

        //00 00 0c 04 00 00 00 00 00 00 03 7f ff ff ff 00
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x0c);
        byteBuf.writeByte(0x04);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x03);
        byteBuf.writeByte(0x7f);
        byteBuf.writeByte(0xff);
        byteBuf.writeByte(0xff);
        byteBuf.writeByte(0xff);
        byteBuf.writeByte(0x00);
        //04 00 10 00 00
        byteBuf.writeByte(0x04);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x10);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
    } else {
        //            System.out.println("********************* setting ack received ...");
        //00 00 00 04 01 00 00 00 00
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x04);
        byteBuf.writeByte(0x01);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
    }
    ctx.writeAndFlush(byteBuf).addListener(new ChannelFutureListener() {
        public void operationComplete(ChannelFuture future) {
            if (future.isSuccess()) {
                //                    System.out.println(" ...operationComplete isSuccess");
                ctx.channel().read();
            } else {
                //                    System.out.println("...operationComplete failure");
                future.channel().close();
            }
        }
    });
}

From source file:com.netty.grpc.proxy.demo.handler.GrpcProxyBackendHandler.java

License:Apache License

private void handleWindowsUpdateFrame(final ChannelHandlerContext ctx) {
    ByteBufAllocator alloc = ctx.alloc();
    ByteBuf byteBuf = alloc.buffer();/*from ww  w.j  a  v  a2s  .  c  om*/
    // 00 00 04 08 00 00 00 00 00 00 0f 00 01
    byteBuf.writeByte(0x00);
    byteBuf.writeByte(0x00);
    byteBuf.writeByte(0x04);
    byteBuf.writeByte(0x08);
    byteBuf.writeByte(0x00);
    byteBuf.writeByte(0x00);
    byteBuf.writeByte(0x00);
    byteBuf.writeByte(0x00);
    byteBuf.writeByte(0x00);
    byteBuf.writeByte(0x00);
    byteBuf.writeByte(0x0f);
    byteBuf.writeByte(0x00);
    byteBuf.writeByte(0x01);
    ctx.writeAndFlush(byteBuf).addListener(new ChannelFutureListener() {
        public void operationComplete(ChannelFuture future) {
            if (future.isSuccess()) {
                ctx.channel().read();
            } else {
                future.channel().close();
            }
        }
    });
}

From source file:com.netty.grpc.proxy.demo.handler.GrpcProxyFrontendHandler.java

License:Apache License

@Override
public void channelActive(ChannelHandlerContext ctx) {
    final Channel inboundChannel = ctx.channel();

    // ??/*from   w ww.  j a va 2s  .  com*/
    Bootstrap b = new Bootstrap();
    b.group(inboundChannel.eventLoop()).channel(ctx.channel().getClass())
            .handler(new GrpcProxyBackendHandler(inboundChannel)).option(ChannelOption.AUTO_READ, false);

    for (int i = 0; i < remoteHosts.length; i++) {
        final ChannelFuture f = b.connect(remoteHosts[i], remotePorts[i]);
        outboundChannels[i] = f.channel();
        f.addListener(new ChannelFutureListener() {
            public void operationComplete(ChannelFuture future) {
                if (future.isSuccess()) {
                    // connection complete start to read first data
                    inboundChannel.read();
                    //                        System.out.println(f.channel().remoteAddress() + ", " + f.channel().localAddress());
                } else {
                    // Close the connection if the connection attempt has failed.
                    //                        System.out.println("channelActive close" + inboundChannel.remoteAddress() + ", " + inboundChannel.localAddress());
                    inboundChannel.close();
                }
            }
        });
    }
}

From source file:com.netty.grpc.proxy.demo.handler.GrpcProxyFrontendHandler.java

License:Apache License

private void handleSettingFrame(final ChannelHandlerContext ctx, Http2Flags flags) {
    ByteBufAllocator alloc = ctx.alloc();
    ByteBuf byteBuf = alloc.buffer();//from   w ww .j av a  2 s .co m
    if (!flags.ack()) {
        //            System.out.println("********************* setting received ...");

        //00 00 0c 04 00 00 00 00 00 00 03 7f ff ff ff 00
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x0c);
        byteBuf.writeByte(0x04);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x03);
        byteBuf.writeByte(0x7f);
        byteBuf.writeByte(0xff);
        byteBuf.writeByte(0xff);
        byteBuf.writeByte(0xff);
        byteBuf.writeByte(0x00);
        //04 00 10 00 00
        byteBuf.writeByte(0x04);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x10);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
    } else {
        //            System.out.println("********************* setting ack received ...");
        //00 00 00 04 01 00 00 00 00
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x04);
        byteBuf.writeByte(0x01);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
        byteBuf.writeByte(0x00);
    }
    ctx.writeAndFlush(byteBuf).addListener(new ChannelFutureListener() {
        public void operationComplete(ChannelFuture future) {
            if (future.isSuccess()) {
                //                    System.out.println(" ...operationComplete isSuccess");
                ctx.channel().read();
            } else {
                //                    System.out.println("...operationComplete failure");
                future.channel().close();
            }
        }
    });

}

From source file:com.nettyhttpserver.server.NettyServer.java

public void run() throws Exception {
    EventLoopGroup bossGroup = new NioEventLoopGroup();
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {/*w  w  w.jav a 2 s  .  c om*/
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .childHandler(new NettyServerInitializer()).option(ChannelOption.SO_BACKLOG, 1024)
                .childOption(ChannelOption.SO_KEEPALIVE, true);

        ChannelFuture cf = b.bind(port).sync();
        cf.channel().closeFuture().sync();
    } finally {
        workerGroup.shutdownGracefully();
        bossGroup.shutdownGracefully();
    }
}