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:com.tesora.dve.tools.libmy.AsyncExample.java

License:Open Source License

public static void main(String[] args) throws Exception {
    final String mysqlHost = "localhost";
    final int mysqlPort = 3307;
    final String username = "root";
    final String password = "password";
    final boolean isClearText = true;

    final InetSocketAddress serverAddress = new InetSocketAddress(mysqlHost, mysqlPort);

    final MyBackendDecoder.CharsetDecodeHelper charsetHelper = constructCharsetDecodeHelper();
    final SimpleCredentials cred = constructCredentials(username, password, isClearText);
    final JavaCharsetCatalog javaCharsetCatalog = constructJavaCharsetCatalog();
    final MysqlClientAuthenticationHandler authHandler = new MysqlClientAuthenticationHandler(cred,
            ClientCapabilities.DEFAULT_PSITE_CAPABILITIES, javaCharsetCatalog, new AtomicReference<Charset>());

    final NioEventLoopGroup connectionEventGroup = new NioEventLoopGroup(1);
    final Bootstrap mysqlBootstrap = new Bootstrap();
    mysqlBootstrap // .group(inboundChannel.eventLoop())
            .channel(NioSocketChannel.class).group(connectionEventGroup)
            .option(ChannelOption.ALLOCATOR, UnpooledByteBufAllocator.DEFAULT)
            .handler(new ChannelInitializer<Channel>() {
                @Override/* w ww  . ja v a  2 s  .  c om*/
                protected void initChannel(Channel ch) throws Exception {

                    ch.pipeline().addLast(authHandler).addLast(MyBackendDecoder.class.getSimpleName(),
                            new MyBackendDecoder(charsetHelper)).addLast(new ChannelDuplexHandler() {

                                @Override
                                public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise)
                                        throws Exception {
                                    System.out.println("WRITE:" + msg);
                                    super.write(ctx, msg, promise);
                                }

                                @Override
                                public void channelRead(ChannelHandlerContext ctx, Object msg)
                                        throws Exception {
                                    if (msg instanceof MyFieldPktResponse) {
                                        final MyFieldPktResponse myFieldPktResponse = (MyFieldPktResponse) msg;
                                        System.out.println("COLUMN: " + myFieldPktResponse.getOrig_column()
                                                + "," + myFieldPktResponse.getColumn_type());
                                    } else if (msg instanceof MyTextResultRow) {
                                        final StringBuilder builder = new StringBuilder();
                                        builder.append("ROW:");
                                        final MyTextResultRow textRow = (MyTextResultRow) msg;
                                        for (int i = 0; i < textRow.size(); i++) {
                                            builder.append('\t');
                                            builder.append(textRow.getString(i));
                                        }
                                        System.out.println(builder.toString());
                                    }
                                    super.channelRead(ctx, msg);
                                }

                                @Override
                                public void channelInactive(ChannelHandlerContext ctx) throws Exception {
                                    super.channelInactive(ctx);
                                    System.out.println("CLOSE. ");
                                }
                            });
                }
            });

    final ChannelFuture connectFut = mysqlBootstrap.connect(serverAddress);
    connectFut.sync();
    System.out.println("Waiting to finish authenticate handshake");

    authHandler.assertAuthenticated();//don't write a request until you know the login is complete.

    System.out.println("Connected, and authenticated, getting channel to write requests");

    final Channel chan = connectFut.channel();

    System.out.println("Sending two pipelined requests without blocking for first response.");

    chan.write(MSPComQueryRequestMessage.newMessage("show databases", CharsetUtil.UTF_8));
    chan.write(
            MSPComQueryRequestMessage.newMessage("select * from information_schema.tables", CharsetUtil.UTF_8));
    chan.flush();//NOTE:  nothing is sent until this is called.  Use writeAndFlush if you want it to go out immediately.

    System.out.println("Sleeping 5 sec so all results come back"); //normally you would sync to responses here.
    TimeUnit.SECONDS.sleep(5);
    System.out.println("Closing socket.");
    chan.writeAndFlush(MSPComQuitRequestMessage.newMessage());//send friendly hangup message. Probably correct to also wait for server close or an OK packet.

    chan.close();
    chan.closeFuture().sync();
    System.out.println("Exiting.");
    System.exit(0);
}

---

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;
    }//from   w  w  w.jav  a 2s.com

    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.zp.netty.EchoClient.java

License:Apache License

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

    // 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());
                    }
                });

        // 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:com.test.zp.netty.EchoServer.java

License:Apache License

public static void main(String[] args) throws Exception {
    // Configure SSL.
    //        final SslContext sslCtx;
    //        if (SSL) {
    //            SelfSignedCertificate ssc = new SelfSignedCertificate();
    //            sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();
    //        } else {
    //            sslCtx = null;
    //        }//from www .j  av  a  2  s .c o  m

    // 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:com.thomas.netty4.SimpleEchoServer.java

License:Apache License

public static void main(String[] args) throws Exception {
    System.out.println("PORT");
    if (args.length > 0) {
        PORT = Integer.parseInt(args[0]);
    }/* ww w. j av  a  2s .  co  m*/

    // Configure SSL.
    final SslContext sslCtx;
    if (SSL) {
        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)
                .option(ChannelOption.TCP_NODELAY, true).option(ChannelOption.SO_KEEPALIVE, true)
                .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 SimpleEchoServerHandler());
                    }
                });

        // 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.tongbanjie.tarzan.rpc.netty.NettyRpcServer.java

License:Apache License

@Override
public void start() {
    this.defaultEventExecutorGroup = new DefaultEventExecutorGroup(//
            nettyServerConfig.getServerWorkerThreads(), //
            new ThreadFactory() {

                private AtomicInteger threadIndex = new AtomicInteger(0);

                @Override/*www .jav  a  2  s. c o  m*/
                public Thread newThread(Runnable r) {
                    return new Thread(r, "NettyServerCodecThread_" + this.threadIndex.incrementAndGet());
                }
            });

    ServerBootstrap childHandler = //
            this.serverBootstrap.group(this.eventLoopGroupBoss, this.eventLoopGroupSelector)
                    .channel(NioServerSocketChannel.class)
                    //
                    .option(ChannelOption.SO_BACKLOG, 1024)
                    //
                    .option(ChannelOption.SO_REUSEADDR, true)
                    //
                    .option(ChannelOption.SO_KEEPALIVE, false)
                    //
                    .childOption(ChannelOption.TCP_NODELAY, true)
                    //
                    .option(ChannelOption.SO_SNDBUF, nettyServerConfig.getServerSocketSndBufSize())
                    //
                    .option(ChannelOption.SO_RCVBUF, nettyServerConfig.getServerSocketRcvBufSize())
                    //
                    .localAddress(new InetSocketAddress(this.nettyServerConfig.getListenPort()))
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        public void initChannel(SocketChannel ch) throws Exception {
                            ch.pipeline().addLast(
                                    //
                                    defaultEventExecutorGroup, //
                                    new NettyEncoder(), //
                                    new NettyDecoder(), //
                                    new IdleStateHandler(0, 0,
                                            nettyServerConfig.getServerChannelMaxIdleTimeSeconds()), //
                                    new NettyConnectManageHandler(), //
                                    new NettyServerHandler());
                        }
                    });

    if (nettyServerConfig.isServerPooledByteBufAllocatorEnable()) {
        childHandler.childOption(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT);
    }

    try {
        ChannelFuture sync = this.serverBootstrap.bind().sync();
        InetSocketAddress addr = (InetSocketAddress) sync.channel().localAddress();
        this.port = addr.getPort();
    } catch (InterruptedException e1) {
        throw new RuntimeException("this.serverBootstrap.bind().sync() InterruptedException", e1);
    }

    if (this.channelEventListener != null) {
        this.nettyEventExecutor.start();
    }

    this.timer.scheduleAtFixedRate(new TimerTask() {

        @Override
        public void run() {
            try {
                NettyRpcServer.this.scanResponseTable();
            } catch (Exception e) {
                LOGGER.error("scanResponseTable exception", e);
            }
        }
    }, 1000 * 3, 1000);

    LOGGER.info("Rpc server [port:{}] start success", port);
}

---

From source file:com.topsec.bdc.platform.api.test.discard.DiscardClient.java

License:Apache License

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

    // Configure SSL.
    final SslContext sslCtx;
    if (SSL) {// w w  w .j  a  va2 s  .c  o m
        sslCtx = SslContextBuilder.forClient().trustManager(InsecureTrustManagerFactory.INSTANCE).build();
    } else {
        sslCtx = null;
    }

    EventLoopGroup group = new NioEventLoopGroup();
    try {
        Bootstrap b = new Bootstrap();
        b.group(group).channel(NioSocketChannel.class).handler(new ChannelInitializer<SocketChannel>() {

            @Override
            protected void initChannel(SocketChannel ch) throws Exception {

                ChannelPipeline p = ch.pipeline();
                if (sslCtx != null) {
                    p.addLast(sslCtx.newHandler(ch.alloc(), HOST, PORT));
                }
                p.addLast(new DiscardClientHandler());
            }
        });

        // Make the connection attempt.
        ChannelFuture f = b.connect(HOST, PORT).sync();

        // Wait until the connection is closed.
        f.channel().closeFuture().sync();
    } finally {
        group.shutdownGracefully();
    }
}

---

From source file:com.topsec.bdc.platform.api.test.discard.DiscardServer.java

License:Apache License

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

    // Configure SSL.
    final SslContext sslCtx;
    if (SSL) {/*w  w  w.  j  a  va  2  s . c o  m*/
        SelfSignedCertificate ssc = new SelfSignedCertificate();
        sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();
    } else {
        sslCtx = null;
    }

    EventLoopGroup bossGroup = new NioEventLoopGroup(1);
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .handler(new LoggingHandler(LogLevel.INFO))
                .childHandler(new ChannelInitializer<SocketChannel>() {

                    @Override
                    public void initChannel(SocketChannel ch) {

                        ChannelPipeline p = ch.pipeline();
                        if (sslCtx != null) {
                            p.addLast(sslCtx.newHandler(ch.alloc()));
                        }
                        p.addLast(new DiscardServerHandler());
                    }
                });

        // Bind and start to accept incoming connections.
        ChannelFuture f = b.bind(PORT).sync();

        // Wait until the server socket is closed.
        // In this example, this does not happen, but you can do that to gracefully
        // shut down your server.
        f.channel().closeFuture().sync();
    } finally {
        workerGroup.shutdownGracefully();
        bossGroup.shutdownGracefully();
    }
}

---

From source file:com.topsec.bdc.platform.api.test.echo.EchoClient.java

License:Apache License

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

    // Configure SSL.git
    final SslContext sslCtx;
    if (SSL) {//  ww  w  .j  av  a2 s  .  c o 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());
                    }
                });

        // 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:com.topsec.bdc.platform.api.test.echo.EchoServer.java

License:Apache License

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

    // Configure SSL.
    final SslContext sslCtx;
    if (SSL) {//  ww  w . jav 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();
    }
}

---

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