Examples of org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory

Package org.jboss.netty.channel.socket.nio

Examples of org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory

org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory
A {@link ClientSocketChannelFactory} which creates a client-side NIO-based{@link SocketChannel}. It utilizes the non-blocking I/O mode which was introduced with NIO to serve many number of concurrent connections efficiently.
How threads work

There are two types of threads in a {@link NioClientSocketChannelFactory}; one is boss thread and the other is worker thread.
Boss thread

One {@link NioClientSocketChannelFactory} has one boss thread. It makesa connection attempt on request. Once a connection attempt succeeds, the boss thread passes the connected {@link Channel} to one of the workerthreads that the {@link NioClientSocketChannelFactory} manages.
Worker threads

One {@link NioClientSocketChannelFactory} can have one or more workerthreads. A worker thread performs non-blocking read and write for one or more {@link Channel}s in a non-blocking mode.
Life cycle of threads and graceful shutdown

All threads are acquired from the {@link Executor}s which were specified when a {@link NioClientSocketChannelFactory} was created. A boss thread isacquired from the {@code bossExecutor}, and worker threads are acquired from the {@code workerExecutor}. Therefore, you should make sure the specified {@link Executor}s are able to lend the sufficient number of threads. It is the best bet to specify {@linkplain Executors#newCachedThreadPool() a cached thread pool}.
Both boss and worker threads are acquired lazily, and then released when there's nothing left to process. All the related resources such as {@link Selector} are also released when the boss and worker threads arereleased. Therefore, to shut down a service gracefully, you should do the following:
1. close all channels created by the factory, and
2. call {@link #releaseExternalResources()}.
Please make sure not to shut down the executor until all channels are closed. Otherwise, you will end up with a {@link RejectedExecutionException}and the related resources might not be released properly. @author The Netty Project (netty-dev@lists.jboss.org) @author Trustin Lee (tlee@redhat.com) @version $Rev: 536 $, $Date: 2008-11-28 20:18:21 +0900 (Fri, 28 Nov 2008) $ @apiviz.landmark

     * @param port    Server port.
     */
    public RedisClient(String host, int port) {
        ExecutorService connectors = Executors.newFixedThreadPool(1);
        ExecutorService workers    = Executors.newCachedThreadPool();
        ClientSocketChannelFactory factory = new NioClientSocketChannelFactory(connectors, workers);


        InetSocketAddress addr = new InetSocketAddress(host, port);


        bootstrap = new ClientBootstrap(factory);
        bootstrap.setOption("remoteAddress", addr);

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            throw new IllegalArgumentException("count must be a positive integer.");
        }


        // Configure the client.
        ClientBootstrap bootstrap = new ClientBootstrap(
                new NioClientSocketChannelFactory(
                        Executors.newCachedThreadPool(),
                        Executors.newCachedThreadPool()));


        // Set up the event pipeline factory.
        bootstrap.setPipelineFactory(new FactorialClientPipelineFactory(count));

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        boolean ssl = scheme.equalsIgnoreCase("https");


        // Configure the client.
        ClientBootstrap bootstrap = new ClientBootstrap(
                new NioClientSocketChannelFactory(
                        Executors.newCachedThreadPool(),
                        Executors.newCachedThreadPool()));


        // Set up the event pipeline factory.
        bootstrap.setPipelineFactory(new HttpClientPipelineFactory(ssl));

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    final ExecutorService executor = Executors.newCachedThreadPool();


    // Configure the client.
    ClientBootstrap bootstrap = new ClientBootstrap(
            new NioClientSocketChannelFactory(
                executor,
                executor));


    bootstrap.setOption(
            "remoteAddress", new InetSocketAddress("localhost", 8080));

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        }
      }
      else
      {
          ClientBootstrap bootstrap = new ClientBootstrap(
                  new NioClientSocketChannelFactory(
                      executor,
                      executor));
          
          HessianProxyFactory factory = new HessianProxyFactory(executor, host.getName()+":"+host.getPort());
          bootstrap.setPipelineFactory(

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        }
      }
      else
      {
          ClientBootstrap bootstrap = new ClientBootstrap(
                  new NioClientSocketChannelFactory(
                      executor,
                      executor));
          
          HessianProxyFactory factory = new HessianProxyFactory(executor, host.getName()+":"+host.getPort());
          bootstrap.setPipelineFactory(

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  {
    String host = args[0];
    int port = Integer.parseInt(args[1]);
    
    ChannelFactory factory =
            new NioClientSocketChannelFactory(
                    Executors.newCachedThreadPool(),
                    Executors.newCachedThreadPool());


        bootstrap = new ClientBootstrap(factory);
        bootstrap.setOption(

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  private void connect(long timeout, TimeUnit tu) throws FlumeException {
    callTimeoutPool = Executors.newCachedThreadPool(
        new TransceiverThreadFactory("Flume Avro RPC Client Call Invoker"));
    try {
      transceiver = new NettyTransceiver(this.address,
          new NioClientSocketChannelFactory(
        Executors.newCachedThreadPool(new TransceiverThreadFactory(
            "Avro " + NettyTransceiver.class.getSimpleName() + " Boss")),
        Executors.newCachedThreadPool(new TransceiverThreadFactory(
            "Avro " + NettyTransceiver.class.getSimpleName() + " I/O Worker"))),
          tu.toMillis(timeout));

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    /**
     * {@inheritedDoc}
     */
    public void start(final int port, final CountDownLatch counter, final byte[] data) throws IOException {
        factory = new NioClientSocketChannelFactory();
        ClientBootstrap bootstrap = new ClientBootstrap(factory);
        bootstrap.setOption("sendBufferSize", 64 * 1024);
        bootstrap.setOption("tcpNoDelay", true);
        bootstrap.setPipelineFactory(new ChannelPipelineFactory() {
            public ChannelPipeline getPipeline() throws Exception {

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  {
    Checkpoint ckpt = Checkpoint.createOnlineConsumptionCheckpoint(scn);
    //TODO why is this needed
    //ckpt.setCatchupSource("foo");
    String uristr = "/stream?sources=105&output=json&size=" + fetchSize + "&streamFromLatestScn=false&checkPoint=" + ckpt.toString();
    ClientBootstrap bootstrap = new ClientBootstrap(new NioClientSocketChannelFactory(Executors.newCachedThreadPool(),
                                                                                      Executors.newCachedThreadPool()));
    bootstrap.setPipelineFactory(new HttpClientPipelineFactory(handler));
    ChannelFuture future = bootstrap.connect(new InetSocketAddress("localhost", relayPort));
    Channel channel = future.awaitUninterruptibly().getChannel();
    Assert.assertTrue(future.isSuccess(), "Cannot connect to relay at localhost:" + relayPort);

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Examples of org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory

How threads work

Boss thread

Worker threads

Life cycle of threads and graceful shutdown

Related Classes of org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory