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

        conf.setZkServers(null).setBookiePort(port)
            .setJournalDirName(tmpDir.getPath())
            .setLedgerDirNames(new String[] { tmpDir.getPath() });
        bs = new BookieServer(conf);
        bs.start();
        channelFactory = new NioClientSocketChannelFactory(Executors.newCachedThreadPool(), Executors
                .newCachedThreadPool());
        executor = new OrderedSafeExecutor(2);
    }

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   * {@link #DEFAULT_CONNECTION_TIMEOUT_MILLIS}.
   * @throws IOException if an error occurs connecting to the given address.
   */
  public NettyTransceiver(InetSocketAddress addr, 
      Long connectTimeoutMillis) throws IOException {
    this(addr, new NioClientSocketChannelFactory(
        Executors.newCachedThreadPool(new NettyTransceiverThreadFactory(
            "Avro " + NettyTransceiver.class.getSimpleName() + " Boss")), 
        Executors.newCachedThreadPool(new NettyTransceiverThreadFactory(
            "Avro " + NettyTransceiver.class.getSimpleName() + " I/O Worker"))), 
        connectTimeoutMillis);

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    protected void setupTCPCommunication() throws Exception {
        if (channelFactory == null) {
            bossExecutor = context.getExecutorServiceManager().newCachedThreadPool(this, "NettyTCPBoss");
            workerExecutor = context.getExecutorServiceManager().newCachedThreadPool(this, "NettyTCPWorker");
            channelFactory = new NioClientSocketChannelFactory(bossExecutor, workerExecutor);
        }
    }

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                        .withWorkerCount(configuration.getWorkerCount())
                        .withName("NettyClientTCPWorker")
                        .build();
                wp = workerPool;
            }
            channelFactory = new NioClientSocketChannelFactory(bp, wp);
        }
    }

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        // TODO: handle session disconnects and expires
        if (LOG.isDebugEnabled()) {
          LOG.debug("Process: " + event.getType() + " " + event.getPath());
        }
      }
    }), new NioClientSocketChannelFactory(Executors.newCachedThreadPool(),
        Executors.newCachedThreadPool()));


    ownZKHandle = true;
    ownChannelFactory = true;
  }

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   *          the bookies have registered
   * @throws InterruptedException
   * @throws KeeperException
   */
  public BookKeeper(ZooKeeper zk) throws InterruptedException, KeeperException {
    this(zk, new NioClientSocketChannelFactory(Executors.newCachedThreadPool(),
        Executors.newCachedThreadPool()));
    ownChannelFactory = true;
  }

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        int clusterSize = this.topology.getPhysicalCluster().getNodes().size();
        partitionChannelMap = Maps.synchronizedBiMap(HashBiMap.<Integer, Channel> create(clusterSize));
        partitionNodeMap = HashBiMap.create(clusterSize);


        // Initialize netty related structures
        ChannelFactory factory = new NioClientSocketChannelFactory(Executors.newCachedThreadPool(),
                Executors.newCachedThreadPool());
        bootstrap = new ClientBootstrap(factory);
        bootstrap.setPipelineFactory(new ChannelPipelineFactory() {
            @Override
            public ChannelPipeline getPipeline() {

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            } else if (uri.getScheme().equalsIgnoreCase("https")) {
                port = 443;
            }
        }


        ClientBootstrap clientBootstrap = new ClientBootstrap(new NioClientSocketChannelFactory(
                Executors.newCachedThreadPool(), Executors.newCachedThreadPool()));
        File tmpFile;
        try {
            tmpFile = File.createTempFile("http", "download");
        } catch (IOException e) {

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   * @throws java.io.IOException
   *           if an error occurs connecting to the given address.
   */
  public NettyTransceiver(InetSocketAddress addr, Long connectTimeoutMillis)
      throws IOException {
    this(addr, new NioClientSocketChannelFactory(
        Executors.newCachedThreadPool(new NettyTransceiverThreadFactory("Wasp "
            + NettyTransceiver.class.getSimpleName() + " Boss")),
        Executors.newCachedThreadPool(new NettyTransceiverThreadFactory("Wasp "
            + NettyTransceiver.class.getSimpleName() + " I/O Worker"))),
        connectTimeoutMillis);

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  static ChannelFuture createChannelFuture(final GenericHttpResponseHandler responseHandler, int port)
  {


    ClientBootstrap client = new ClientBootstrap(
        new NioClientSocketChannelFactory(BOSS_POOL, IO_POOL));
    client.setPipelineFactory(new ChannelPipelineFactory()
    {
      @Override
      public ChannelPipeline getPipeline() throws Exception
      {

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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