Example usage for io.netty.channel EventLoopGroup shutdownGracefully

List of usage examples for io.netty.channel EventLoopGroup shutdownGracefully

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Introduction

In this page you can find the example usage for io.netty.channel EventLoopGroup shutdownGracefully.

Prototype

Future<?> shutdownGracefully();

Source Link

Document

Shortcut method for #shutdownGracefully(long,long,TimeUnit) with sensible default values.

Usage

From source file:com.lb.netty.protoc.SubReqServer.java

License:Apache License

public void bind(int port) throws Exception {
    // ??NIO// w w w  .j  ava 2s .c  o  m
    EventLoopGroup bossGroup = new NioEventLoopGroup();
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .option(ChannelOption.SO_BACKLOG, 100).handler(new LoggingHandler(LogLevel.INFO))
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) {
                        ch.pipeline().addLast(new ProtobufVarint32FrameDecoder());
                        // protobuffer
                        ch.pipeline().addLast(
                                new ProtobufDecoder(SubscribeReqProto.SubscribeReq.getDefaultInstance()));
                        ch.pipeline().addLast(new ProtobufVarint32LengthFieldPrepender());
                        ch.pipeline().addLast(new ProtobufEncoder());
                        ch.pipeline().addLast(new SubReqServerHandler());
                    }
                });
        // ???
        ChannelFuture f = b.bind(port).sync();
        // ???
        f.channel().closeFuture().sync();
    } finally {
        // ?
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}

From source file:com.lbwan.game.client.WebSocketClientRunner.java

License:Apache License

public void run() throws Exception {
    EventLoopGroup group = new NioEventLoopGroup();
    try {/*from  w w w .j  a va2 s. co  m*/
        // Connect with V13 (RFC 6455 aka HyBi-17). You can change it to V08 or V00.
        // If you change it to V00, ping is not supported and remember to change
        // HttpResponseDecoder to WebSocketHttpResponseDecoder in the pipeline.
        final WebSocketClientHandler handler = new WebSocketClientHandler(WebSocketClientHandshakerFactory
                .newHandshaker(uri, WebSocketVersion.V13, null, false, new DefaultHttpHeaders()));

        final String protocol = uri.getScheme();
        int defaultPort;
        ChannelInitializer<SocketChannel> initializer;

        // Normal WebSocket
        if ("ws".equals(protocol)) {
            initializer = new ChannelInitializer<SocketChannel>() {
                @Override
                public void initChannel(SocketChannel ch) throws Exception {
                    ch.pipeline().addLast("http-codec", new HttpClientCodec())
                            .addLast("aggregator", new HttpObjectAggregator(8192))
                            .addLast("ws-handler", handler);
                }
            };

            defaultPort = 80;
            // Secure WebSocket
        } else {
            throw new IllegalArgumentException("Unsupported protocol: " + protocol);
        }

        Bootstrap b = new Bootstrap();
        b.group(group).channel(NioSocketChannel.class).handler(initializer);

        int port = uri.getPort();
        // If no port was specified, we'll try the default port: https://tools.ietf.org/html/rfc6455#section-1.7
        if (uri.getPort() == -1) {
            port = defaultPort;
        }

        Channel ch = b.connect(uri.getHost(), port).sync().channel();
        handler.handshakeFuture().sync();

        BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
        while (true) {
            String msg = console.readLine();
            if (msg == null) {
                break;
            } else if ("bye".equals(msg.toLowerCase())) {
                ch.writeAndFlush(new CloseWebSocketFrame());
                ch.closeFuture().sync();
                break;
            } else if ("ping".equals(msg.toLowerCase())) {
                WebSocketFrame frame = new PingWebSocketFrame(Unpooled.copiedBuffer(new byte[] { 8, 1, 8, 1 }));
                ch.writeAndFlush(frame);
            } else {
                WebSocketFrame frame = new TextWebSocketFrame(msg);
                ch.writeAndFlush(frame);
            }
        }
    } finally {
        group.shutdownGracefully();
    }
}

From source file:com.leadtone.riders.server.RidersWebSocketServer.java

License:Apache License

public void start() throws Exception {
    EventLoopGroup bossGroup = new NioEventLoopGroup();
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {// ww w.  ja  v a  2  s . co m
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class).childHandler(serverInitializer);

        Channel ch = b.bind(port).sync().channel();
        log.info("Web socket server started at port " + port + '.');
        log.info("Open your browser and navigate to http://localhost:" + port + '/');

        ch.closeFuture().sync();
    } finally {
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}

From source file:com.lin.studytest.netty.server.EchoServer.java

License:Apache License

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

    // Configure the server.
    EventLoopGroup bossGroup = new NioEventLoopGroup();
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {/*from  ww  w  .j  a v  a  2 s. co  m*/
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                //             .option(ChannelOption.SO_BACKLOG, 100)
                //             .handler(new LoggingHandler(LogLevel.INFO))
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ChannelPipeline p = ch.pipeline();
                        p.addLast(new EchoServerHandler());
                    }
                });

        // Start the server.
        ChannelFuture f = b.bind(PORT).sync();

        // Wait until the server socket is closed.
        f.channel().closeFuture().sync();
    } finally {
        // Shut down all event loops to terminate all threads.
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}

From source file:com.linecorp.armeria.server.Server.java

License:Apache License

private void stop1(CompletableFuture<Void> future, EventLoopGroup bossGroup) {
    // FIXME(trustin): Shutdown and terminate the blockingTaskExecutor.
    //                 Could be fixed while fixing https://github.com/line/armeria/issues/46

    final Future<?> bossShutdownFuture;
    if (bossGroup != null) {
        bossShutdownFuture = bossGroup.shutdownGracefully();
        this.bossGroup = null;
    } else {/*w  w  w .ja v  a 2 s.  com*/
        bossShutdownFuture = ImmediateEventExecutor.INSTANCE.newSucceededFuture(null);
    }

    bossShutdownFuture.addListener(f1 -> {
        // All server ports have been unbound.
        primaryActivePort = null;
        activePorts.clear();

        // Shut down the workers.
        final EventLoopGroup workerGroup = this.workerGroup;
        final Future<?> workerShutdownFuture;
        if (workerGroup != null) {
            workerShutdownFuture = workerGroup.shutdownGracefully();
            this.workerGroup = null;
        } else {
            workerShutdownFuture = ImmediateEventExecutor.INSTANCE.newSucceededFuture(null);
        }

        workerShutdownFuture.addListener(f2 -> {
            stateManager.enter(State.STOPPED);
            completeFuture(future);
        });
    });
}

From source file:com.linkedin.pinot.transport.scattergather.ScatterGatherTest.java

License:Apache License

@Test
public void testSingleServer() throws Exception {

    MetricsRegistry registry = new MetricsRegistry();

    // Server start
    int serverPort = 7071;
    NettyTCPServer server1 = new NettyTCPServer(serverPort, new TestRequestHandlerFactory(0, 1), null);
    Thread t1 = new Thread(server1);
    t1.start();//from   ww  w  .j av a  2  s  . c o  m

    //Client setup
    ScheduledExecutorService timedExecutor = new ScheduledThreadPoolExecutor(1);
    ExecutorService poolExecutor = MoreExecutors.sameThreadExecutor();
    ExecutorService service = new ThreadPoolExecutor(1, 1, 1, TimeUnit.DAYS,
            new LinkedBlockingDeque<Runnable>());
    EventLoopGroup eventLoopGroup = new NioEventLoopGroup();
    NettyClientMetrics clientMetrics = new NettyClientMetrics(registry, "client_");
    PooledNettyClientResourceManager rm = new PooledNettyClientResourceManager(eventLoopGroup,
            new HashedWheelTimer(), clientMetrics);
    KeyedPoolImpl<ServerInstance, NettyClientConnection> pool = new KeyedPoolImpl<ServerInstance, NettyClientConnection>(
            1, 1, 300000, 1, rm, timedExecutor, poolExecutor, registry);
    rm.setPool(pool);

    ScatterGatherImpl scImpl = new ScatterGatherImpl(pool, service);

    SegmentIdSet pg = new SegmentIdSet();
    pg.addSegment(new SegmentId("0"));
    ServerInstance serverInstance1 = new ServerInstance("localhost", serverPort);
    List<ServerInstance> instances = new ArrayList<ServerInstance>();
    instances.add(serverInstance1);
    Map<ServerInstance, SegmentIdSet> pgMap = new HashMap<ServerInstance, SegmentIdSet>();
    pgMap.put(serverInstance1, pg);

    String request = "request_0";
    Map<SegmentIdSet, String> pgMapStr = new HashMap<SegmentIdSet, String>();
    pgMapStr.put(pg, request);
    ScatterGatherRequest req = new TestScatterGatherRequest(pgMap, pgMapStr);

    CompositeFuture<ServerInstance, ByteBuf> fut = scImpl.scatterGather(req);
    Map<ServerInstance, ByteBuf> v = fut.get();
    ByteBuf b = v.get(serverInstance1);
    byte[] b2 = new byte[b.readableBytes()];
    b.readBytes(b2);
    String response = new String(b2);
    Assert.assertEquals(response, "response_0_0");
    Assert.assertEquals(v.size(), 1);
    server1.shutdownGracefully();
    pool.shutdown();
    service.shutdown();
    eventLoopGroup.shutdownGracefully();
}

From source file:com.linkedin.pinot.transport.scattergather.ScatterGatherTest.java

License:Apache License

@Test
public void testMultipleServerHappy() throws Exception {

    MetricsRegistry registry = new MetricsRegistry();

    // Server start
    int serverPort1 = 7071;
    int serverPort2 = 7072;
    int serverPort3 = 7073;
    int serverPort4 = 7074;
    NettyTCPServer server1 = new NettyTCPServer(serverPort1, new TestRequestHandlerFactory(0, 1), null);
    NettyTCPServer server2 = new NettyTCPServer(serverPort2, new TestRequestHandlerFactory(1, 1), null);
    NettyTCPServer server3 = new NettyTCPServer(serverPort3, new TestRequestHandlerFactory(2, 1), null);
    NettyTCPServer server4 = new NettyTCPServer(serverPort4, new TestRequestHandlerFactory(3, 1), null);

    Thread t1 = new Thread(server1);
    Thread t2 = new Thread(server2);
    Thread t3 = new Thread(server3);
    Thread t4 = new Thread(server4);
    t1.start();/* w  w  w.  ja v  a2s  .  c o m*/
    t2.start();
    t3.start();
    t4.start();

    //Client setup
    ScheduledExecutorService timedExecutor = new ScheduledThreadPoolExecutor(1);
    ExecutorService poolExecutor = MoreExecutors.sameThreadExecutor();
    ExecutorService service = new ThreadPoolExecutor(1, 1, 1, TimeUnit.DAYS,
            new LinkedBlockingDeque<Runnable>());
    EventLoopGroup eventLoopGroup = new NioEventLoopGroup();
    NettyClientMetrics clientMetrics = new NettyClientMetrics(registry, "client_");
    PooledNettyClientResourceManager rm = new PooledNettyClientResourceManager(eventLoopGroup,
            new HashedWheelTimer(), clientMetrics);
    KeyedPoolImpl<ServerInstance, NettyClientConnection> pool = new KeyedPoolImpl<ServerInstance, NettyClientConnection>(
            1, 1, 300000, 1, rm, timedExecutor, poolExecutor, registry);
    rm.setPool(pool);

    SegmentIdSet pg1 = new SegmentIdSet();
    pg1.addSegment(new SegmentId("0"));
    SegmentIdSet pg2 = new SegmentIdSet();
    pg2.addSegment(new SegmentId("1"));
    SegmentIdSet pg3 = new SegmentIdSet();
    pg3.addSegment(new SegmentId("2"));
    SegmentIdSet pg4 = new SegmentIdSet();
    pg4.addSegment(new SegmentId("3"));

    ServerInstance serverInstance1 = new ServerInstance("localhost", serverPort1);
    ServerInstance serverInstance2 = new ServerInstance("localhost", serverPort2);
    ServerInstance serverInstance3 = new ServerInstance("localhost", serverPort3);
    ServerInstance serverInstance4 = new ServerInstance("localhost", serverPort4);

    Map<ServerInstance, SegmentIdSet> pgMap = new HashMap<ServerInstance, SegmentIdSet>();
    pgMap.put(serverInstance1, pg1);
    pgMap.put(serverInstance2, pg2);
    pgMap.put(serverInstance3, pg3);
    pgMap.put(serverInstance4, pg4);

    String request1 = "request_0";
    String request2 = "request_1";
    String request3 = "request_2";
    String request4 = "request_3";

    Map<SegmentIdSet, String> pgMapStr = new HashMap<SegmentIdSet, String>();
    pgMapStr.put(pg1, request1);
    pgMapStr.put(pg2, request2);
    pgMapStr.put(pg3, request3);
    pgMapStr.put(pg4, request4);

    ScatterGatherRequest req = new TestScatterGatherRequest(pgMap, pgMapStr);
    ScatterGatherImpl scImpl = new ScatterGatherImpl(pool, service);
    CompositeFuture<ServerInstance, ByteBuf> fut = scImpl.scatterGather(req);
    Map<ServerInstance, ByteBuf> v = fut.get();
    Assert.assertEquals(v.size(), 4);

    ByteBuf b = v.get(serverInstance1);
    byte[] b2 = new byte[b.readableBytes()];
    b.readBytes(b2);
    String response = new String(b2);
    Assert.assertEquals(response, "response_0_0");
    b = v.get(serverInstance2);
    b2 = new byte[b.readableBytes()];
    b.readBytes(b2);
    response = new String(b2);
    Assert.assertEquals(response, "response_1_0");
    b = v.get(serverInstance3);
    b2 = new byte[b.readableBytes()];
    b.readBytes(b2);
    response = new String(b2);
    Assert.assertEquals(response, "response_2_0");
    b = v.get(serverInstance4);
    b2 = new byte[b.readableBytes()];
    b.readBytes(b2);
    response = new String(b2);
    Assert.assertEquals(response, "response_3_0");

    server1.shutdownGracefully();
    server2.shutdownGracefully();
    server3.shutdownGracefully();
    server4.shutdownGracefully();
    pool.shutdown();
    service.shutdown();
    eventLoopGroup.shutdownGracefully();
}

From source file:com.linkedin.pinot.transport.scattergather.ScatterGatherTest.java

License:Apache License

@Test
public void testMultipleServerTimeout() throws Exception {

    MetricsRegistry registry = new MetricsRegistry();

    // Server start
    int serverPort1 = 7081;
    int serverPort2 = 7082;
    int serverPort3 = 7083;
    int serverPort4 = 7084; // Timeout server
    NettyTCPServer server1 = new NettyTCPServer(serverPort1, new TestRequestHandlerFactory(0, 1), null);
    NettyTCPServer server2 = new NettyTCPServer(serverPort2, new TestRequestHandlerFactory(1, 1), null);
    NettyTCPServer server3 = new NettyTCPServer(serverPort3, new TestRequestHandlerFactory(2, 1), null);
    NettyTCPServer server4 = new NettyTCPServer(serverPort4, new TestRequestHandlerFactory(3, 1, 7000, false),
            null);//  w  w  w .ja  va 2s  .  com

    Thread t1 = new Thread(server1);
    Thread t2 = new Thread(server2);
    Thread t3 = new Thread(server3);
    Thread t4 = new Thread(server4);
    t1.start();
    t2.start();
    t3.start();
    t4.start();

    //Client setup
    ScheduledExecutorService timedExecutor = new ScheduledThreadPoolExecutor(1);
    ExecutorService service = new ThreadPoolExecutor(5, 5, 5, TimeUnit.DAYS,
            new LinkedBlockingDeque<Runnable>());
    EventLoopGroup eventLoopGroup = new NioEventLoopGroup();
    NettyClientMetrics clientMetrics = new NettyClientMetrics(registry, "client_");
    PooledNettyClientResourceManager rm = new PooledNettyClientResourceManager(eventLoopGroup,
            new HashedWheelTimer(), clientMetrics);
    KeyedPoolImpl<ServerInstance, NettyClientConnection> pool = new KeyedPoolImpl<ServerInstance, NettyClientConnection>(
            1, 1, 300000, 1, rm, timedExecutor, service, registry);
    rm.setPool(pool);

    SegmentIdSet pg1 = new SegmentIdSet();
    pg1.addSegment(new SegmentId("0"));
    SegmentIdSet pg2 = new SegmentIdSet();
    pg2.addSegment(new SegmentId("1"));
    SegmentIdSet pg3 = new SegmentIdSet();
    pg3.addSegment(new SegmentId("2"));
    SegmentIdSet pg4 = new SegmentIdSet();
    pg4.addSegment(new SegmentId("3"));

    ServerInstance serverInstance1 = new ServerInstance("localhost", serverPort1);
    ServerInstance serverInstance2 = new ServerInstance("localhost", serverPort2);
    ServerInstance serverInstance3 = new ServerInstance("localhost", serverPort3);
    ServerInstance serverInstance4 = new ServerInstance("localhost", serverPort4);

    Map<ServerInstance, SegmentIdSet> pgMap = new HashMap<ServerInstance, SegmentIdSet>();
    pgMap.put(serverInstance1, pg1);
    pgMap.put(serverInstance2, pg2);
    pgMap.put(serverInstance3, pg3);
    pgMap.put(serverInstance4, pg4);

    String request1 = "request_0";
    String request2 = "request_1";
    String request3 = "request_2";
    String request4 = "request_3";

    Map<SegmentIdSet, String> pgMapStr = new HashMap<SegmentIdSet, String>();
    pgMapStr.put(pg1, request1);
    pgMapStr.put(pg2, request2);
    pgMapStr.put(pg3, request3);
    pgMapStr.put(pg4, request4);

    ScatterGatherRequest req = new TestScatterGatherRequest(pgMap, pgMapStr, new RoundRobinReplicaSelection(),
            ReplicaSelectionGranularity.SEGMENT_ID_SET, 0, 1000);
    ScatterGatherImpl scImpl = new ScatterGatherImpl(pool, service);
    CompositeFuture<ServerInstance, ByteBuf> fut = scImpl.scatterGather(req);
    Map<ServerInstance, ByteBuf> v = fut.get();

    //Only 3 servers return value.
    Assert.assertEquals(v.size(), 3);
    ByteBuf b = v.get(serverInstance1);
    byte[] b2 = new byte[b.readableBytes()];
    b.readBytes(b2);
    String response = new String(b2);
    Assert.assertEquals(response, "response_0_0");
    b = v.get(serverInstance2);
    b2 = new byte[b.readableBytes()];
    b.readBytes(b2);
    response = new String(b2);
    Assert.assertEquals(response, "response_1_0");
    b = v.get(serverInstance3);
    b2 = new byte[b.readableBytes()];
    b.readBytes(b2);
    response = new String(b2);
    Assert.assertEquals(response, "response_2_0");

    //No  response from 4th server
    Assert.assertNull(v.get(serverInstance4), "No response from 4th server");

    Map<ServerInstance, Throwable> errorMap = fut.getError();
    Assert.assertEquals(errorMap.size(), 1, "One error");
    Assert.assertNotNull(errorMap.get(serverInstance4), "Server4 returned timeout");
    System.out.println("Error is :" + errorMap.get(serverInstance4));

    Thread.sleep(3000);
    System.out.println("Pool Stats :" + pool.getStats());
    pool.getStats().refresh();
    Assert.assertEquals(pool.getStats().getTotalBadDestroyed(), 1, "Total Bad destroyed");

    pool.shutdown();
    service.shutdown();
    eventLoopGroup.shutdownGracefully();

    server1.shutdownGracefully();
    server2.shutdownGracefully();
    server3.shutdownGracefully();
    server4.shutdownGracefully();
}

From source file:com.linkedin.pinot.transport.scattergather.ScatterGatherTest.java

License:Apache License

@Test
public void testMultipleServerError() throws Exception {

    MetricsRegistry registry = new MetricsRegistry();

    // Server start
    int serverPort1 = 7091;
    int serverPort2 = 7092;
    int serverPort3 = 7093;
    int serverPort4 = 7094; // error server
    NettyTCPServer server1 = new NettyTCPServer(serverPort1, new TestRequestHandlerFactory(0, 1), null);
    NettyTCPServer server2 = new NettyTCPServer(serverPort2, new TestRequestHandlerFactory(1, 1), null);
    NettyTCPServer server3 = new NettyTCPServer(serverPort3, new TestRequestHandlerFactory(2, 1), null);
    NettyTCPServer server4 = new NettyTCPServer(serverPort4, new TestRequestHandlerFactory(3, 1, 1000, true),
            null);//from   w w  w  .j  av a  2 s.  c om

    Thread t1 = new Thread(server1);
    Thread t2 = new Thread(server2);
    Thread t3 = new Thread(server3);
    Thread t4 = new Thread(server4);
    t1.start();
    t2.start();
    t3.start();
    t4.start();

    //Client setup
    ScheduledExecutorService timedExecutor = new ScheduledThreadPoolExecutor(1);
    ExecutorService poolExecutor = MoreExecutors.sameThreadExecutor();
    ExecutorService service = new ThreadPoolExecutor(1, 1, 1, TimeUnit.DAYS,
            new LinkedBlockingDeque<Runnable>());
    EventLoopGroup eventLoopGroup = new NioEventLoopGroup();
    NettyClientMetrics clientMetrics = new NettyClientMetrics(registry, "client_");
    PooledNettyClientResourceManager rm = new PooledNettyClientResourceManager(eventLoopGroup,
            new HashedWheelTimer(), clientMetrics);
    KeyedPoolImpl<ServerInstance, NettyClientConnection> pool = new KeyedPoolImpl<ServerInstance, NettyClientConnection>(
            1, 1, 300000, 1, rm, timedExecutor, poolExecutor, registry);
    rm.setPool(pool);

    SegmentIdSet pg1 = new SegmentIdSet();
    pg1.addSegment(new SegmentId("0"));
    SegmentIdSet pg2 = new SegmentIdSet();
    pg2.addSegment(new SegmentId("1"));
    SegmentIdSet pg3 = new SegmentIdSet();
    pg3.addSegment(new SegmentId("2"));
    SegmentIdSet pg4 = new SegmentIdSet();
    pg4.addSegment(new SegmentId("3"));

    ServerInstance serverInstance1 = new ServerInstance("localhost", serverPort1);
    ServerInstance serverInstance2 = new ServerInstance("localhost", serverPort2);
    ServerInstance serverInstance3 = new ServerInstance("localhost", serverPort3);
    ServerInstance serverInstance4 = new ServerInstance("localhost", serverPort4);

    Map<ServerInstance, SegmentIdSet> pgMap = new HashMap<ServerInstance, SegmentIdSet>();
    pgMap.put(serverInstance1, pg1);
    pgMap.put(serverInstance2, pg2);
    pgMap.put(serverInstance3, pg3);
    pgMap.put(serverInstance4, pg4);

    String request1 = "request_0";
    String request2 = "request_1";
    String request3 = "request_2";
    String request4 = "request_3";

    Map<SegmentIdSet, String> pgMapStr = new HashMap<SegmentIdSet, String>();
    pgMapStr.put(pg1, request1);
    pgMapStr.put(pg2, request2);
    pgMapStr.put(pg3, request3);
    pgMapStr.put(pg4, request4);

    ScatterGatherRequest req = new TestScatterGatherRequest(pgMap, pgMapStr, new RoundRobinReplicaSelection(),
            ReplicaSelectionGranularity.SEGMENT_ID_SET, 0, 1000);
    ScatterGatherImpl scImpl = new ScatterGatherImpl(pool, service);
    CompositeFuture<ServerInstance, ByteBuf> fut = scImpl.scatterGather(req);
    Map<ServerInstance, ByteBuf> v = fut.get();

    //Only 3 servers return value.
    Assert.assertEquals(v.size(), 3);
    ByteBuf b = v.get(serverInstance1);
    byte[] b2 = new byte[b.readableBytes()];
    b.readBytes(b2);
    String response = new String(b2);
    Assert.assertEquals(response, "response_0_0");
    b = v.get(serverInstance2);
    b2 = new byte[b.readableBytes()];
    b.readBytes(b2);
    response = new String(b2);
    Assert.assertEquals(response, "response_1_0");
    b = v.get(serverInstance3);
    b2 = new byte[b.readableBytes()];
    b.readBytes(b2);
    response = new String(b2);
    Assert.assertEquals(response, "response_2_0");

    //No  response from 4th server
    Assert.assertNull(v.get(serverInstance4), "No response from 4th server");

    Map<ServerInstance, Throwable> errorMap = fut.getError();
    Assert.assertEquals(errorMap.size(), 1, "One error");
    Assert.assertNotNull(errorMap.get(serverInstance4), "Server4 returned timeout");
    System.out.println("Error is :" + errorMap.get(serverInstance4));

    Thread.sleep(3000);
    System.out.println("Pool Stats :" + pool.getStats());
    pool.getStats().refresh();
    Assert.assertEquals(pool.getStats().getTotalBadDestroyed(), 1, "Total Bad destroyed");

    pool.shutdown();
    service.shutdown();
    eventLoopGroup.shutdownGracefully();

    server1.shutdownGracefully();
    server2.shutdownGracefully();
    server3.shutdownGracefully();
    server4.shutdownGracefully();
}

From source file:com.liusu.tcp.proxy.mine.server.ReadBackServer.java

License:Apache License

public void bind(int port) throws Exception {
    // ??NIO//from  w ww  .  ja  va 2 s . c o m
    EventLoopGroup bossGroup = new NioEventLoopGroup();
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .option(ChannelOption.SO_BACKLOG, 1024).childHandler(new ChildChannelHandler());
        // ???
        ChannelFuture f = b.bind(port).sync();

        // f.addListener(ChannelFutureListener.CLOSE);
        // ???
        f.channel().closeFuture().sync();
    } finally {
        // ?
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}