Example usage for io.netty.channel.nio NioEventLoopGroup NioEventLoopGroup

Introduction

In this page you can find the example usage for io.netty.channel.nio NioEventLoopGroup NioEventLoopGroup.

Prototype

public NioEventLoopGroup()

Source Link

Document

Create a new instance using the default number of threads, the default ThreadFactory and the SelectorProvider which is returned by SelectorProvider#provider() .

Usage

From source file:com.github.liyp.netty.App.java

License:Apache License

public static void main(String[] args) throws Exception {

    EventLoopGroup boss = new NioEventLoopGroup();
    EventLoopGroup worker = new NioEventLoopGroup();

    try {/*from   w ww.  ja  va2s  .  c om*/
        ServerBootstrap b = new ServerBootstrap();
        b.group(boss, worker).channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel ch) throws Exception {
                        ch.pipeline().addLast(new ReplayingDecoder() {
                            @Override
                            protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out)
                                    throws Exception {
                                short magicHeader = in.readShort();
                                logger.debug("Receive magic header: {}.", magicHeader);
                                if (magicHeader != HEADER) {
                                    logger.error("Receive illegal magic header: {}, close channel: {}.",
                                            magicHeader, ctx.channel().remoteAddress());
                                    ctx.close();
                                }

                                short dataLen = in.readShort();
                                logger.debug("Receive message data length: {}.", dataLen);
                                if (dataLen < 0) {
                                    logger.error("Data length is negative, close channel: {}.",
                                            ctx.channel().remoteAddress());
                                    ctx.close();
                                }

                                ByteBuf payload = in.readBytes(dataLen);
                                String cloudMsg = payload.toString(CharsetUtil.UTF_8);
                                logger.debug("Receive data: {}.", cloudMsg);
                                out.add(cloudMsg);
                            }
                        }).addLast(new MessageToByteEncoder<String>() {
                            @Override
                            protected void encode(ChannelHandlerContext ctx, String msg, ByteBuf out)
                                    throws Exception {
                                out.writeBytes(msg.getBytes());
                            }
                        }).addLast(new ChannelInboundHandlerAdapter() {
                            @Override
                            public void channelActive(ChannelHandlerContext ctx) throws Exception {
                                logger.info("start receive msg...");
                            }

                            @Override
                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                                logger.info("receive msg: {}", msg);
                                logger.info("echo msg");
                                ctx.writeAndFlush(msg);
                            }
                        });
                    }
                }).option(ChannelOption.SO_BACKLOG, 128).childOption(ChannelOption.SO_KEEPALIVE, true);
        ChannelFuture f = b.bind(PORT).sync();
        logger.info("9999");
        f.channel().closeFuture().sync();
    } finally {
        worker.shutdownGracefully();
        boss.shutdownGracefully();
    }
}

From source file:com.github.liyp.netty.HandlerChainApp.java

License:Apache License

public static void main(String[] args) throws Exception {

    EventLoopGroup boss = new NioEventLoopGroup();
    EventLoopGroup worker = new NioEventLoopGroup();

    try {/*  w  w w.  ja  v a  2  s  . co  m*/
        ServerBootstrap b = new ServerBootstrap();
        b.group(boss, worker).channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel ch) throws Exception {
                        ch.pipeline().addLast(new ChannelInboundHandlerAdapter() {
                            @Override
                            public void channelActive(ChannelHandlerContext ctx) throws Exception {
                                logger.info("1");
                                ctx.fireChannelActive();
                            }
                        }).addLast(new ChannelInboundHandlerAdapter() {
                            @Override
                            public void channelActive(ChannelHandlerContext ctx) throws Exception {
                                logger.info("2");
                                ctx.fireChannelActive();
                            }
                        }).addLast(new ChannelInboundHandlerAdapter() {
                            @Override
                            public void channelActive(ChannelHandlerContext ctx) throws Exception {
                                logger.info("3");
                                ctx.fireChannelActive();
                            }
                        });
                    }
                }).option(ChannelOption.SO_BACKLOG, 128).childOption(ChannelOption.SO_KEEPALIVE, true);
        ChannelFuture f = b.bind(PORT).sync();
        logger.info("9999");
        f.channel().closeFuture().sync();
    } finally {
        worker.shutdownGracefully();
        boss.shutdownGracefully();
    }
}

From source file:com.github.milenkovicm.kafka.ControlBrokerTest.java

License:Apache License

@Test
public void test_fetchMetadata() throws Exception {
    createTopic(topic);/*ww w  . ja  v a  2 s  .c o  m*/

    ProducerProperties properties = new ProducerProperties();
    properties.override(ProducerProperties.NETTY_DEBUG_PIPELINE, true);

    ControlKafkaBroker controlKafkaChannel = new ControlKafkaBroker("localhost", START_PORT, topic,
            new NioEventLoopGroup(), properties);
    controlKafkaChannel.connect().sync();

    final CountDownLatch latch = new CountDownLatch(1);
    final KafkaPromise future = controlKafkaChannel.fetchMetadata(topic);
    future.addListener(new FutureListener<MetadataResponse>() {

        @Override
        public void operationComplete(Future<MetadataResponse> future) throws Exception {
            Assert.assertNotNull(future.get());
            latch.countDown();
        }
    });

    Assert.assertTrue("latch not triggered", latch.await(2, TimeUnit.SECONDS));
    controlKafkaChannel.disconnect();
}

From source file:com.github.milenkovicm.kafka.ControlBrokerTest.java

License:Apache License

@Test
public void test_fetchMetadata_notExistingTopic() throws Exception {
    String topicName = "topic_does_not_exist";

    ProducerProperties properties = new ProducerProperties();
    properties.override(ProducerProperties.NETTY_DEBUG_PIPELINE, true);

    ControlKafkaBroker controlKafkaChannel = new ControlKafkaBroker("localhost", START_PORT, topicName,
            new NioEventLoopGroup(), properties);

    controlKafkaChannel.connect().sync();
    try {//from w w  w .jav  a  2s . c o  m
        controlKafkaChannel.fetchMetadata(topicName).sync();
        Assert.fail("shouldn't get here");
    } catch (KafkaException e) {
        Assert.assertThat(e.error, is(Error.LEADER_NOT_AVAILABLE));
    }

    controlKafkaChannel.disconnect();
}

From source file:com.github.milenkovicm.kafka.DataBrokerTest.java

License:Apache License

@Test
public void test_sendMessage() throws Exception {
    createTopic(topic);/*from www.  ja  v  a2 s  . co m*/

    CountDownLatch latch = new CountDownLatch(1);
    ProducerProperties properties = new ProducerProperties();
    properties.override(ProducerProperties.NETTY_DEBUG_PIPELINE, true);

    DataKafkaBroker dataChannel = new DataKafkaBroker("localhost", START_PORT, 0, topic,
            new NioEventLoopGroup(), properties);
    dataChannel.connect().sync();

    dataChannel.send(freeLaterBuffer("1".getBytes()), 0, freeLaterBuffer(TEST_MESSAGE.getBytes()));

    final KafkaStream<byte[], byte[]> stream = consume(topic).get(0);
    final ConsumerIterator<byte[], byte[]> messages = stream.iterator();

    Assert.assertThat(new String(messages.next().message()), is(TEST_MESSAGE));

    dataChannel.disconnect();
}

From source file:com.github.milenkovicm.kafka.DataBrokerTest.java

License:Apache License

@Test(expected = KafkaException.class)
public void test_sendMessage_unknownTopic() throws Exception {

    ProducerProperties properties = new ProducerProperties();
    properties.override(ProducerProperties.NETTY_DEBUG_PIPELINE, true);

    DataKafkaBroker dataChannel = new DataKafkaBroker("localhost", START_PORT, 0, "unknown_topic",
            new NioEventLoopGroup(), properties);
    dataChannel.connect().sync();// www.  jav a2  s .  c o m

    final ChannelFuture future = dataChannel.send(freeLaterBuffer("1".getBytes()), 0,
            freeLaterBuffer(TEST_MESSAGE.getBytes()));
    future.sync();

    dataChannel.disconnect();
}

From source file:com.github.milenkovicm.kafka.DataBrokerTest.java

License:Apache License

@Test
public void test_sendMessage_unknownTopicNoAck() throws Exception {

    ProducerProperties properties = new ProducerProperties();
    properties.override(ProducerProperties.NETTY_DEBUG_PIPELINE, true);
    properties.override(ProducerProperties.DATA_ACK, Acknowledgment.WAIT_FOR_NO_ONE);

    DataKafkaBroker dataChannel = new DataKafkaBroker("localhost", START_PORT, 0, "unknown_topic",
            new NioEventLoopGroup(), properties);
    dataChannel.connect().sync();/* w w w  .  j a va 2 s  . c  o  m*/

    final ChannelFuture future = dataChannel.send(freeLaterBuffer("1".getBytes()), 0,
            freeLaterBuffer(TEST_MESSAGE.getBytes()));
    future.sync();

    dataChannel.disconnect();
}

From source file:com.github.mrstampy.gameboot.otp.netty.OtpNettyTestConfiguration.java

License:Open Source License

/**
 * Encrypted client bootstrap.//from   w ww.j a  va 2  s  .c  o  m
 *
 * @return the bootstrap
 * @throws Exception
 *           the exception
 */
@Bean(name = CLIENT_ENCRYPTED_BOOTSTRAP)
public Bootstrap encryptedClientBootstrap() throws Exception {
    //@formatter:off
    return new Bootstrap().channel(NioSocketChannel.class).group(new NioEventLoopGroup())
            .handler(encryptedClientInitializer());
    //@formatter:on
}

From source file:com.github.mrstampy.gameboot.otp.netty.OtpNettyTestConfiguration.java

License:Open Source License

/**
 * Clear client bootstrap./*from   w ww. j a  va  2  s.c o m*/
 *
 * @return the bootstrap
 * @throws Exception
 *           the exception
 */
@Bean(name = CLIENT_CLEAR_BOOTSTRAP)
public Bootstrap clearClientBootstrap() throws Exception {
    //@formatter:off
    return new Bootstrap().channel(NioSocketChannel.class).group(new NioEventLoopGroup())
            .handler(clearClientInitializer());
    //@formatter:on
}

From source file:com.github.mrstampy.gameboot.otp.netty.OtpNettyTestConfiguration.java

License:Open Source License

/**
 * Server encrypted bootstrap./*w  w  w.j  ava  2  s  .  c  o m*/
 *
 * @return the server bootstrap
 * @throws Exception
 *           the exception
 */
@Bean(name = SERVER_ENCRYPTED_BOOTSTRAP)
public ServerBootstrap serverEncryptedBootstrap() throws Exception {
    //@formatter:off
    return new ServerBootstrap().channel(NioServerSocketChannel.class)
            .group(new NioEventLoopGroup(), new NioEventLoopGroup()).childHandler(encryptedServerInitializer());
    //@formatter:on
}