Example usage for io.netty.bootstrap ServerBootstrap childGroup

Introduction

In this page you can find the example usage for io.netty.bootstrap ServerBootstrap childGroup.

Prototype

EventLoopGroup childGroup

To view the source code for io.netty.bootstrap ServerBootstrap childGroup.

Click Source Link

Usage

From source file:com.fjn.helper.frameworkex.netty.v4.echotest.EchoServer.java

License:Apache License

public void start() throws Exception {
    EventLoopGroup group = new NioEventLoopGroup();
    try {/*  w  w  w .j  a v a  2 s  .  c  om*/
        // Bootstraps the server
        ServerBootstrap b = new ServerBootstrap();

        // Specifies NIO transport, local socket address
        b.group(group);
        b.childGroup();
        b.channel(NioServerSocketChannel.class);
        b.localAddress(new InetSocketAddress(port));

        // Adds handler to channel pipeline
        b.childHandler(new ChannelInitializer<SocketChannel>() {
            @Override
            protected void initChannel(SocketChannel ch) throws Exception {
                ch.pipeline().addLast(new EchoServerHandler());
            }
        });

        // Binds server, waits for server to close, and releases resources
        ChannelFuture f = b.bind().sync();
        System.out.println(EchoServer.class.getName() + " started and listen on " + f.channel().localAddress());
        f.channel().closeFuture().sync();
    } finally {
        group.shutdownGracefully().sync();
    }

}

---

From source file:jj.repl.ReplServer.java

License:Apache License

private void start() {
    port = (configuration.port() < 1023 || configuration.port() > 65535) ? DEFAULT_PORT : configuration.port();

    final ServerBootstrap bootstrap = new ServerBootstrap()
            .group(new NioEventLoopGroup(1, bossThreadFactory), new NioEventLoopGroup(1, workerThreadFactory))
            .channel(NioServerSocketChannel.class).childHandler(channelInitializer);

    bootstrap.bind("localhost", port).addListener(new ChannelFutureListener() {

        @Override//w ww .  jav  a  2s  .  c  om
        public void operationComplete(ChannelFuture future) throws Exception {
            if (future.isSuccess()) {
                publisher.publish(new ReplListening(port));
                server = bootstrap;
            } else {
                publisher.publish(new Emergency("could not start the REPL server", future.cause()));
                bootstrap.group().shutdownGracefully(0, 0, SECONDS);
                bootstrap.childGroup().shutdownGracefully(0, 0, SECONDS);
            }
        }
    });
}

---

From source file:org.apache.flink.runtime.io.network.netty.NettyConnectionManagerTest.java

License:Apache License

/**
 * Tests that the number of arenas and number of threads of the client and
 * server are set to the same number, that is the number of configured
 * task slots.//w ww.java2s  .c om
 */
@Test
public void testMatchingNumberOfArenasAndThreadsAsDefault() throws Exception {
    // Expected number of arenas and threads
    int numberOfSlots = 2;

    NettyConfig config = new NettyConfig(InetAddress.getLocalHost(), NetUtils.getAvailablePort(), 1024,
            numberOfSlots, new Configuration());

    NettyConnectionManager connectionManager = new NettyConnectionManager(config);

    connectionManager.start(mock(ResultPartitionProvider.class), mock(TaskEventDispatcher.class),
            mock(NetworkBufferPool.class));

    assertEquals(numberOfSlots, connectionManager.getBufferPool().getNumberOfArenas());

    {
        // Client event loop group
        Bootstrap boostrap = connectionManager.getClient().getBootstrap();
        EventLoopGroup group = boostrap.group();

        Field f = group.getClass().getSuperclass().getSuperclass().getDeclaredField("children");
        f.setAccessible(true);
        Object[] eventExecutors = (Object[]) f.get(group);

        assertEquals(numberOfSlots, eventExecutors.length);
    }

    {
        // Server event loop group
        ServerBootstrap bootstrap = connectionManager.getServer().getBootstrap();
        EventLoopGroup group = bootstrap.group();

        Field f = group.getClass().getSuperclass().getSuperclass().getDeclaredField("children");
        f.setAccessible(true);
        Object[] eventExecutors = (Object[]) f.get(group);

        assertEquals(numberOfSlots, eventExecutors.length);
    }

    {
        // Server child event loop group
        ServerBootstrap bootstrap = connectionManager.getServer().getBootstrap();
        EventLoopGroup group = bootstrap.childGroup();

        Field f = group.getClass().getSuperclass().getSuperclass().getDeclaredField("children");
        f.setAccessible(true);
        Object[] eventExecutors = (Object[]) f.get(group);

        assertEquals(numberOfSlots, eventExecutors.length);
    }
}

---

From source file:org.apache.flink.runtime.io.network.netty.NettyConnectionManagerTest.java

License:Apache License

/**
 * Tests that the number of arenas and threads can be configured manually.
 *//*from   www.  ja  va2s .  co  m*/
@Test
public void testManualConfiguration() throws Exception {
    // Expected numbers
    int numberOfArenas = 1;
    int numberOfClientThreads = 3;
    int numberOfServerThreads = 4;

    // Expected number of threads
    Configuration flinkConfig = new Configuration();
    flinkConfig.setInteger(NettyConfig.NUM_ARENAS, numberOfArenas);
    flinkConfig.setInteger(NettyConfig.NUM_THREADS_CLIENT, 3);
    flinkConfig.setInteger(NettyConfig.NUM_THREADS_SERVER, 4);

    NettyConfig config = new NettyConfig(InetAddress.getLocalHost(), NetUtils.getAvailablePort(), 1024, 1337,
            flinkConfig);

    NettyConnectionManager connectionManager = new NettyConnectionManager(config);

    connectionManager.start(mock(ResultPartitionProvider.class), mock(TaskEventDispatcher.class),
            mock(NetworkBufferPool.class));

    assertEquals(numberOfArenas, connectionManager.getBufferPool().getNumberOfArenas());

    {
        // Client event loop group
        Bootstrap boostrap = connectionManager.getClient().getBootstrap();
        EventLoopGroup group = boostrap.group();

        Field f = group.getClass().getSuperclass().getSuperclass().getDeclaredField("children");
        f.setAccessible(true);
        Object[] eventExecutors = (Object[]) f.get(group);

        assertEquals(numberOfClientThreads, eventExecutors.length);
    }

    {
        // Server event loop group
        ServerBootstrap bootstrap = connectionManager.getServer().getBootstrap();
        EventLoopGroup group = bootstrap.group();

        Field f = group.getClass().getSuperclass().getSuperclass().getDeclaredField("children");
        f.setAccessible(true);
        Object[] eventExecutors = (Object[]) f.get(group);

        assertEquals(numberOfServerThreads, eventExecutors.length);
    }

    {
        // Server child event loop group
        ServerBootstrap bootstrap = connectionManager.getServer().getBootstrap();
        EventLoopGroup group = bootstrap.childGroup();

        Field f = group.getClass().getSuperclass().getSuperclass().getDeclaredField("children");
        f.setAccessible(true);
        Object[] eventExecutors = (Object[]) f.get(group);

        assertEquals(numberOfServerThreads, eventExecutors.length);
    }
}

---

From source file:se.sics.gvod.net.NettyNetwork.java

License:Open Source License

private void closeSeverBootstrap(ServerBootstrap serverBootstrap) {
    serverBootstrap.childGroup().shutdownGracefully();
    serverBootstrap.group().shutdownGracefully();
}

---