Examples with ChannelFutureListener io.netty.channel.ChannelFutureListener used on opensource projects

Example 46 with ChannelFutureListener

use of io.netty.channel.ChannelFutureListener in project tesla by linking12.

the class HttpProxyServer method doStart.

private void doStart() {
    ServerBootstrap serverBootstrap = new ServerBootstrap().group(serverGroup.getClientToProxyAcceptorPoolForTransport(), serverGroup.getClientToProxyWorkerPoolForTransport());
    ChannelInitializer<Channel> initializer = new ChannelInitializer<Channel>() {

        protected void initChannel(Channel ch) throws Exception {
            new ClientToProxyConnection(HttpProxyServer.this, ch.pipeline(), globalTrafficShapingHandler);
        }
    };
    serverBootstrap.channelFactory(new ChannelFactory<ServerChannel>() {

        public ServerChannel newChannel() {
            return new NioServerSocketChannel();
        }
    });
    serverBootstrap.childHandler(initializer);
    ChannelFuture future = serverBootstrap.bind(requestedAddress).addListener(new ChannelFutureListener() {

        public void operationComplete(ChannelFuture future) throws Exception {
            if (future.isSuccess()) {
                registerChannel(future.channel());
            }
        }
    }).awaitUninterruptibly();
    Throwable cause = future.cause();
    if (cause != null) {
        throw new RuntimeException(cause);
    }
    this.boundAddress = ((InetSocketAddress) future.channel().localAddress());
    LOG.info("Proxy started at address: " + this.boundAddress);
    Runtime.getRuntime().addShutdownHook(jvmShutdownHook);
}

Example 47 with ChannelFutureListener

use of io.netty.channel.ChannelFutureListener in project hive by apache.

the class Rpc method createClient.

/**
 * Creates an RPC client for a server running on the given remote host and port.
 *
 * @param config RPC configuration data.
 * @param eloop Event loop for managing the connection.
 * @param host Host name or IP address to connect to.
 * @param port Port where server is listening.
 * @param clientId The client ID that identifies the connection.
 * @param secret Secret for authenticating the client with the server.
 * @param dispatcher Dispatcher used to handle RPC calls.
 * @return A future that can be used to monitor the creation of the RPC object.
 */
public static Promise<Rpc> createClient(Map<String, String> config, final NioEventLoopGroup eloop, String host, int port, final String clientId, final String secret, final RpcDispatcher dispatcher) throws Exception {
    final RpcConfiguration rpcConf = new RpcConfiguration(config);
    int connectTimeoutMs = (int) rpcConf.getConnectTimeoutMs();
    final ChannelFuture cf = new Bootstrap().group(eloop).handler(new ChannelInboundHandlerAdapter() {
    }).channel(NioSocketChannel.class).option(ChannelOption.SO_KEEPALIVE, true).option(ChannelOption.CONNECT_TIMEOUT_MILLIS, connectTimeoutMs).connect(host, port);
    final Promise<Rpc> promise = eloop.next().newPromise();
    final AtomicReference<Rpc> rpc = new AtomicReference<Rpc>();
    // Set up a timeout to undo everything.
    final Runnable timeoutTask = new Runnable() {

        @Override
        public void run() {
            promise.setFailure(new TimeoutException("Timed out waiting for RPC server connection."));
        }
    };
    final ScheduledFuture<?> timeoutFuture = eloop.schedule(timeoutTask, connectTimeoutMs, TimeUnit.MILLISECONDS);
    // The channel listener instantiates the Rpc instance when the connection is established,
    // and initiates the SASL handshake.
    cf.addListener(new ChannelFutureListener() {

        @Override
        public void operationComplete(ChannelFuture cf) throws Exception {
            if (cf.isSuccess()) {
                SaslClientHandler saslHandler = new SaslClientHandler(rpcConf, clientId, promise, timeoutFuture, secret, dispatcher);
                Rpc rpc = createRpc(rpcConf, saslHandler, (SocketChannel) cf.channel(), eloop);
                saslHandler.rpc = rpc;
                saslHandler.sendHello(cf.channel());
            } else {
                promise.setFailure(cf.cause());
            }
        }
    });
    // Handle cancellation of the promise.
    promise.addListener(new GenericFutureListener<Promise<Rpc>>() {

        @Override
        public void operationComplete(Promise<Rpc> p) {
            if (p.isCancelled()) {
                cf.cancel(true);
            }
        }
    });
    return promise;
}

Example 48 with ChannelFutureListener

use of io.netty.channel.ChannelFutureListener in project pravega by pravega.

the class ConnectionFactoryImpl method establishConnection.

@Override
public CompletableFuture<ClientConnection> establishConnection(PravegaNodeUri location, ReplyProcessor rp) {
    Preconditions.checkNotNull(location);
    Exceptions.checkNotClosed(closed.get(), this);
    final SslContext sslCtx;
    if (clientConfig.isEnableTls()) {
        try {
            SslContextBuilder sslCtxFactory = SslContextBuilder.forClient();
            if (Strings.isNullOrEmpty(clientConfig.getTrustStore())) {
                sslCtxFactory = sslCtxFactory.trustManager(FingerprintTrustManagerFactory.getInstance(FingerprintTrustManagerFactory.getDefaultAlgorithm()));
            } else {
                sslCtxFactory = SslContextBuilder.forClient().trustManager(new File(clientConfig.getTrustStore()));
            }
            sslCtx = sslCtxFactory.build();
        } catch (SSLException | NoSuchAlgorithmException e) {
            throw new RuntimeException(e);
        }
    } else {
        sslCtx = null;
    }
    AppendBatchSizeTracker batchSizeTracker = new AppendBatchSizeTrackerImpl();
    ClientConnectionInboundHandler handler = new ClientConnectionInboundHandler(location.getEndpoint(), rp, batchSizeTracker);
    Bootstrap b = new Bootstrap();
    b.group(group).channel(nio ? NioSocketChannel.class : EpollSocketChannel.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) {
                SslHandler sslHandler = sslCtx.newHandler(ch.alloc(), location.getEndpoint(), location.getPort());
                if (clientConfig.isValidateHostName()) {
                    SSLEngine sslEngine = sslHandler.engine();
                    SSLParameters sslParameters = sslEngine.getSSLParameters();
                    sslParameters.setEndpointIdentificationAlgorithm("HTTPS");
                    sslEngine.setSSLParameters(sslParameters);
                }
                p.addLast(sslHandler);
            }
            // p.addLast(new LoggingHandler(LogLevel.INFO));
            p.addLast(new ExceptionLoggingHandler(location.getEndpoint()), new CommandEncoder(batchSizeTracker), new LengthFieldBasedFrameDecoder(WireCommands.MAX_WIRECOMMAND_SIZE, 4, 4), new CommandDecoder(), handler);
        }
    });
    // Start the client.
    CompletableFuture<ClientConnection> connectionComplete = new CompletableFuture<>();
    try {
        b.connect(location.getEndpoint(), location.getPort()).addListener(new ChannelFutureListener() {

            @Override
            public void operationComplete(ChannelFuture future) {
                if (future.isSuccess()) {
                    // since ChannelFuture is complete future.channel() is not a blocking call.
                    Channel ch = future.channel();
                    log.debug("Connect operation completed for channel:{}, local address:{}, remote address:{}", ch.id(), ch.localAddress(), ch.remoteAddress());
                    // Once a channel is closed the channel group implementation removes it.
                    allChannels.add(ch);
                    connectionComplete.complete(handler);
                } else {
                    connectionComplete.completeExceptionally(new ConnectionFailedException(future.cause()));
                }
            }
        });
    } catch (Exception e) {
        connectionComplete.completeExceptionally(new ConnectionFailedException(e));
    }
    // check if channel is registered.
    CompletableFuture<Void> channelRegisteredFuture = new CompletableFuture<>();
    handler.completeWhenRegistered(channelRegisteredFuture);
    return connectionComplete.thenCombine(channelRegisteredFuture, (clientConnection, v) -> clientConnection);
}

Example 49 with ChannelFutureListener

use of io.netty.channel.ChannelFutureListener in project failsafe by jhalterman.

the class NettyExample method main.

public static void main(String... args) throws Throwable {
    EventLoopGroup group = new NioEventLoopGroup();
    Bootstrap bootstrap = createBootstrap(group);
    RetryPolicy retryPolicy = new RetryPolicy().withDelay(1, TimeUnit.SECONDS);
    Failsafe.with(retryPolicy).with(group).runAsync(execution -> bootstrap.connect(HOST, PORT).addListener((ChannelFutureListener) channelFuture -> {
        if (channelFuture.isSuccess()) {
            System.out.println("Connected!");
            try {
                channelFuture.sync();
                channelFuture.channel().closeFuture().sync();
            } catch (Exception ignore) {
                group.shutdownGracefully();
            }
        } else if (!execution.retryOn(channelFuture.cause()))
            System.out.println("Connection attempts failed");
    }));
    Thread.sleep(5000);
}

Example 50 with ChannelFutureListener

use of io.netty.channel.ChannelFutureListener in project grpc-java by grpc.

the class NettyServer method start.

@Override
public void start(ServerListener serverListener) throws IOException {
    listener = checkNotNull(serverListener, "serverListener");
    // If using the shared groups, get references to them.
    allocateSharedGroups();
    ServerBootstrap b = new ServerBootstrap();
    b.group(bossGroup, workerGroup);
    b.channel(channelType);
    if (NioServerSocketChannel.class.isAssignableFrom(channelType)) {
        b.option(SO_BACKLOG, 128);
        b.childOption(SO_KEEPALIVE, true);
    }
    b.childHandler(new ChannelInitializer<Channel>() {

        @Override
        public void initChannel(Channel ch) throws Exception {
            NettyServerTransport transport = new NettyServerTransport(ch, protocolNegotiator, maxStreamsPerConnection, flowControlWindow, maxMessageSize, maxHeaderListSize);
            ServerTransportListener transportListener;
            // This is to order callbacks on the listener, not to guard access to channel.
            synchronized (NettyServer.this) {
                if (channel != null && !channel.isOpen()) {
                    // Server already shutdown.
                    ch.close();
                    return;
                }
                // `channel` shutdown can race with `ch` initialization, so this is only safe to increment
                // inside the lock.
                eventLoopReferenceCounter.retain();
                transportListener = listener.transportCreated(transport);
            }
            transport.start(transportListener);
            ch.closeFuture().addListener(new ChannelFutureListener() {

                @Override
                public void operationComplete(ChannelFuture future) {
                    eventLoopReferenceCounter.release();
                }
            });
        }
    });
    // Bind and start to accept incoming connections.
    ChannelFuture future = b.bind(address);
    try {
        future.await();
    } catch (InterruptedException ex) {
        Thread.currentThread().interrupt();
        throw new RuntimeException("Interrupted waiting for bind");
    }
    if (!future.isSuccess()) {
        throw new IOException("Failed to bind", future.cause());
    }
    channel = future.channel();
}