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

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

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

org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory
A {@link ServerSocketChannelFactory} which creates a server-side NIO-based{@link ServerSocketChannel}. 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 NioServerSocketChannelFactory}; one is boss thread and the other is worker thread.
Boss threads

Each bound {@link ServerSocketChannel} has its own boss thread.For example, if you opened two server ports such as 80 and 443, you will have two boss threads. A boss thread accepts incoming connections until the port is unbound. Once a connection is accepted successfully, the boss thread passes the accepted {@link Channel} to one of the workerthreads that the {@link NioServerSocketChannelFactory} manages.
Worker threads

One {@link NioServerSocketChannelFactory} 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 NioServerSocketChannelFactory} was created. Boss threads areacquired 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. unbind all channels created by the factory,
2. close all child channels accepted by the unbound channels, and
3. 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

    }


    private ServerBootstrap buildBootstrapFlashPolicy() {
        // Configure the server.
        final ServerBootstrap bootstrap = new ServerBootstrap(
                new NioServerSocketChannelFactory(
                        Executors.newCachedThreadPool(),
                        Executors.newCachedThreadPool()));


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

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    }


    @Override
    public void run()
    {
      _bootstrap = new ServerBootstrap(new NioServerSocketChannelFactory(
          Executors.newCachedThreadPool(), Executors.newCachedThreadPool()));


      // Set up the event pipeline factory.
      _bootstrap.setPipelineFactory(new HttpServerPipelineFactory());

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  protected void initializeContainerNetworking(ByteOrder byteOrder) throws IOException, DatabusException
  {
    //instruct netty not to rename our threads in the I/O and boss thread pools
    ThreadRenamingRunnable.setThreadNameDeterminer(ThreadNameDeterminer.CURRENT);


    _httpBootstrap = new ServerBootstrap(new NioServerSocketChannelFactory(_bossExecutorService,
                                                                           _ioExecutorService));
    _httpBootstrap.setPipelineFactory(new HttpServerPipelineFactory(this));
    _httpBootstrap.setOption("bufferFactory", DirectChannelBufferFactory.getInstance(byteOrder));
    _httpBootstrap.setOption("child.bufferFactory", DirectChannelBufferFactory.getInstance(byteOrder));


    if (_containerStaticConfig.getTcp().isEnabled())
    {
      _tcpBootstrap = new ServerBootstrap(new NioServerSocketChannelFactory(_bossExecutorService,
                                                                            _ioExecutorService));
      _tcpBootstrap.setPipelineFactory(new TcpServerPipelineFactory(this, byteOrder));
      _tcpBootstrap.setOption("bufferFactory", DirectChannelBufferFactory.getInstance(byteOrder));
      _tcpBootstrap.setOption("child.bufferFactory", DirectChannelBufferFactory.getInstance(byteOrder));

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    }
  }


  @Override
  public void start() {
    ChannelFactory factory = new NioServerSocketChannelFactory(
        Executors.newCachedThreadPool(), Executors.newCachedThreadPool());


    ServerBootstrap serverBootstrap = new ServerBootstrap(factory);
    serverBootstrap.setPipelineFactory(new ChannelPipelineFactory() {
      @Override

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  private Server createSslServer(AvroSourceProtocol protocol)
      throws IllegalAccessException, InstantiationException {
    Server server = new NettyServer(new SpecificResponder(
        AvroSourceProtocol.class, protocol), new InetSocketAddress(hostname, port),
            new NioServerSocketChannelFactory(
                    Executors.newCachedThreadPool(),
                    Executors.newCachedThreadPool()),
            new SSLChannelPipelineFactory(),
            null);

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  public void start() {
    logger.info("Starting {}...", this);


    Responder responder = new SpecificResponder(AvroSourceProtocol.class, this);


    NioServerSocketChannelFactory socketChannelFactory = initSocketChannelFactory();


    ChannelPipelineFactory pipelineFactory = initChannelPipelineFactory();


    server = new NettyServer(responder, new InetSocketAddress(bindAddress, port),
          socketChannelFactory, pipelineFactory, null);

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    logger.info("Avro source {} started.", getName());
  }


  private NioServerSocketChannelFactory initSocketChannelFactory() {
    NioServerSocketChannelFactory socketChannelFactory;
    if (maxThreads <= 0) {
      socketChannelFactory = new NioServerSocketChannelFactory
        (Executors.newCachedThreadPool(new ThreadFactoryBuilder().
          setNameFormat("Avro " + NettyTransceiver.class.getSimpleName()
            + " Boss-%d").build()),
          Executors.newCachedThreadPool(new ThreadFactoryBuilder().
            setNameFormat("Avro " + NettyTransceiver.class.getSimpleName()
              + "  I/O Worker-%d").build()));
    } else {
      socketChannelFactory = new NioServerSocketChannelFactory(
        Executors.newCachedThreadPool(new ThreadFactoryBuilder().
          setNameFormat(
            "Avro " + NettyTransceiver.class.getSimpleName()
              + " Boss-%d").build()),
        Executors.newFixedThreadPool(maxThreads, new ThreadFactoryBuilder().

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    listenerSocket = new InetSocketAddress("0.0.0.0", port);
    bossThreadFactory = new ExecutorThreadFactory("BossPool-[" + port + "]", true);
    workerThreadFactory = new ExecutorThreadFactory("WorkerPool-[" + port + "]", true);
    bossPool = Executors.newCachedThreadPool(bossThreadFactory);
    workerPool = Executors.newCachedThreadPool(workerThreadFactory);
    channelFactory = new NioServerSocketChannelFactory(bossPool, workerPool);
    pipelineFactory = new ChannelPipelineFactoryImpl(providers);
    bootstrap = new CustomServerBootstrap(channelFactory);
    bootstrap.setOptions(channelOptions);
    bootstrap.setPipelineFactory(pipelineFactory);
    new BootstrapJMXManager(bootstrap, "org.helios.netty:service=ServerBootstrap,name=SimpleNIOServer");

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    MetricCollector collector = MetricCollector.getInstance(5000);
    bossPool = ThreadPoolFactory.newCachedThreadPool(getClass().getPackage().getName(), "boss");
    workerPool =  ThreadPoolFactory.newCachedThreadPool(getClass().getPackage().getName(), "worker");
    pipelineFactory = new ServerPipelineFactory(getPipelineModifiers());
    ((ServerPipelineFactory)pipelineFactory).addModifier(collector.getName(), collector);
    channelFactory = new NioServerSocketChannelFactory(bossPool, workerPool);
    bstrap = new ServerBootstrap(channelFactory);
    bstrap.setPipelineFactory(pipelineFactory);
    bstrap.setOption("child.keepAlive", true);
    bstrap.bind(isock);
    LOG.info("Netty-Ajax Server Started with Root [" + contentRoot + "]");

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        //You need then to create a DuplexTcpServerBootstrap and provide it an RpcCallExecutor.




        DuplexTcpServerBootstrap bootstrap = new DuplexTcpServerBootstrap(
                serverInfo,
                new NioServerSocketChannelFactory(
                        Executors.newCachedThreadPool(),
                        Executors.newCachedThreadPool())
        );


        bootstrap.setRpcServerCallExecutor(new ThreadPoolCallExecutor(10, 10));

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

How threads work

Boss threads

Worker threads

Life cycle of threads and graceful shutdown

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