Java EventLoopGroup類代碼示例

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
private Server(
    AddressResolver addressResolver,
    EventLoopGroup eventLoopGroup,
    Class<? extends ServerChannel> channelClass,
    boolean customEventLoop,
    Timer timer,
    boolean customTimer,
    long bindTimeoutInNanos,
    StubStore stubStore,
    boolean activityLogging) {
  this(
      addressResolver,
      eventLoopGroup,
      customEventLoop,
      timer,
      customTimer,
      bindTimeoutInNanos,
      stubStore,
      activityLogging,
      new ServerBootstrap()
          .group(eventLoopGroup)
          .channel(channelClass)
          .childHandler(new Initializer()));
}
 

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
/**
 * Adds a channel that listens locally
 */
public SocketAddress addLocalEndpoint()
{
    ChannelFuture channelfuture;

    synchronized (this.endpoints)
    {
        channelfuture = ((ServerBootstrap)((ServerBootstrap)(new ServerBootstrap()).channel(LocalServerChannel.class)).childHandler(new ChannelInitializer<Channel>()
        {
            protected void initChannel(Channel p_initChannel_1_) throws Exception
            {
                NetworkManager networkmanager = new NetworkManager(EnumPacketDirection.SERVERBOUND);
                networkmanager.setNetHandler(new NetHandlerHandshakeMemory(NetworkSystem.this.mcServer, networkmanager));
                NetworkSystem.this.networkManagers.add(networkmanager);
                p_initChannel_1_.pipeline().addLast((String)"packet_handler", (ChannelHandler)networkmanager);
            }
        }).group((EventLoopGroup)eventLoops.getValue()).localAddress(LocalAddress.ANY)).bind().syncUninterruptibly();
        this.endpoints.add(channelfuture);
    }

    return channelfuture.channel().localAddress();
}
 

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
private static Pair<EventLoopGroup, Class<? extends Channel>> createEventLoopGroup(
    Configuration conf) {
  // Max amount of threads to use. 0 lets Netty decide based on amount of cores
  int maxThreads = conf.getInt(CLIENT_MAX_THREADS, 0);

  // Config to enable native transport. Does not seem to be stable at time of implementation
  // although it is not extensively tested.
  boolean epollEnabled = conf.getBoolean(USE_NATIVE_TRANSPORT, false);

  // Use the faster native epoll transport mechanism on linux if enabled
  if (epollEnabled && JVM.isLinux() && JVM.isAmd64()) {
    if (LOG.isDebugEnabled()) {
      LOG.debug("Create EpollEventLoopGroup with maxThreads = " + maxThreads);
    }
    return new Pair<EventLoopGroup, Class<? extends Channel>>(new EpollEventLoopGroup(maxThreads,
        Threads.newDaemonThreadFactory("AsyncRpcChannel")), EpollSocketChannel.class);
  } else {
    if (LOG.isDebugEnabled()) {
      LOG.debug("Create NioEventLoopGroup with maxThreads = " + maxThreads);
    }
    return new Pair<EventLoopGroup, Class<? extends Channel>>(new NioEventLoopGroup(maxThreads,
        Threads.newDaemonThreadFactory("AsyncRpcChannel")), NioSocketChannel.class);
  }
}
 

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
public void start(String ip, int port) throws Exception {
	// Configure SSL.
	final SslContext sslCtx;
	if (SSL) {
		sslCtx = SslContextBuilder.forClient().trustManager(InsecureTrustManagerFactory.INSTANCE).build();
	} else {
		sslCtx = null;
	}
	EventLoopGroup group = new NioEventLoopGroup();
	try {
		Bootstrap b = new Bootstrap();
		b.group(group).channel(NioSocketChannel.class).handler(new FileClientInitializer(sslCtx));
		Channel ch = b.connect(ip, port).sync().channel();
		ConfigurationContext.propMap.putIfAbsent(SOCKET_CHANNEL, ch);			
	}catch(Exception e){
		e.printStackTrace();
	}
}
 

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
/**
 *@description 監聽指定端口
 *@time 創建時間:2017年7月21日下午3:50:26
 *@param port
 *@throws InterruptedException
 *@author dzn
 */
public void bind(int port) throws InterruptedException{
    EventLoopGroup bossGroup = new NioEventLoopGroup();
    EventLoopGroup workGroup = new NioEventLoopGroup();
    try{
        ServerBootstrap server = new ServerBootstrap();
        server.group(bossGroup, workGroup)
            .channel(NioServerSocketChannel.class)
            .option(ChannelOption.SO_BACKLOG, 1024)
            .childHandler(new ChildChannelHandler());
        ChannelFuture cf = server.bind(port).sync();
        System.out.println("服務器已啟動, 監控端口號為 : " + port);
        cf.channel().closeFuture().sync();
    }finally{
        bossGroup.shutdownGracefully();
        workGroup.shutdownGracefully();
    }
}
 

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
@Deprecated
public RedisClient(final Timer timer, ExecutorService executor, EventLoopGroup group, Class<? extends SocketChannel> socketChannelClass, String host, int port, 
                    int connectTimeout, int commandTimeout) {
    RedisClientConfig config = new RedisClientConfig();
    config.setTimer(timer).setExecutor(executor).setGroup(group).setSocketChannelClass(socketChannelClass)
    .setAddress(host, port).setConnectTimeout(connectTimeout).setCommandTimeout(commandTimeout);
    
    this.config = config;
    this.executor = config.getExecutor();
    this.timer = config.getTimer();
    
    addr = new InetSocketAddress(config.getAddress().getHost(), config.getAddress().getPort());
    
    channels = new DefaultChannelGroup(config.getGroup().next());
    bootstrap = createBootstrap(config, Type.PLAIN);
    pubSubBootstrap = createBootstrap(config, Type.PUBSUB);
    
    this.commandTimeout = config.getCommandTimeout();
}
 

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
/**
 * Start the server
 *
 * @param port The port on which the server listen to
 */
public void run(final int port) {
    final EventLoopGroup bossGroup = new NioEventLoopGroup();
    final EventLoopGroup workerGroup = new NioEventLoopGroup();

    try {
        final ServerBootstrap bootstrap = new ServerBootstrap()
                .group(bossGroup, workerGroup)
                .channel(NioServerSocketChannel.class)
                .childHandler(new ServerInitializer())
                .childOption(ChannelOption.SO_KEEPALIVE, true)
                .childOption(ChannelOption.TCP_NODELAY, true);

        final ChannelFuture f = bootstrap.bind(port).sync();
        LOGGER.info("NettyServer: running on port {}", port);

        f.channel().closeFuture().sync();
    } catch (final InterruptedException e) {
        LOGGER.error("NettyServer: an error occurred while running: {}", e.getMessage());
    } finally {
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}
 

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
public void run() {
    try {
        // Configure the server.
        EventLoopGroup group = new NioEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.option(ChannelOption.SO_BACKLOG, 1024);
            b.group(group)
                    .channel(NioServerSocketChannel.class)
                    .handler(new LoggingHandler(LogLevel.INFO))
                    .childHandler(new Http2ServerInitializer(mSslCtx));

            sServerChannel = b.bind(PORT).sync().channel();
            Log.i(TAG, "Netty HTTP/2 server started on " + getServerUrl());
            sBlock.open();
            sServerChannel.closeFuture().sync();
        } finally {
            group.shutdownGracefully();
        }
        Log.i(TAG, "Stopped Http2TestServerRunnable!");
    } catch (Exception e) {
        Log.e(TAG, e.toString());
    }
}
 

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
public void start() throws Exception {
	EventLoopGroup group = new NioEventLoopGroup();
	try {
		Bootstrap b = new Bootstrap();
		b.group(group)
				.channel(NioSocketChannel.class)
				.remoteAddress(new InetSocketAddress(this.host, this.port))
				.handler(new ChannelInitializer<SocketChannel>() {
					@Override
					protected void initChannel(SocketChannel ch) throws Exception {
						System.out.println("connected server...");
						ch.pipeline().addLast(new ByteArrayEncoder());
						ch.pipeline().addLast(new ByteArrayDecoder());
						ch.pipeline().addLast(new EchoClientHandler());
					}
				});

		ChannelFuture cf = b.connect().sync();

		cf.channel().closeFuture().sync();
	} finally {
		group.shutdownGracefully().sync();
	}
}
 

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
@Test
public void customEventLoopGroup_NotClosedWhenClientIsClosed() throws Exception {

    ThreadFactory threadFactory = spy(new CustomThreadFactory());
    // Cannot use DefaultEventLoopGroupFactory because the concrete
    // implementation it creates is platform-dependent and could be a final
    // (i.e. non-spyable) class.
    EventLoopGroup eventLoopGroup = spy(new NioEventLoopGroup(0, threadFactory));
    EventLoopGroupConfiguration eventLoopGroupConfiguration =
            EventLoopGroupConfiguration.builder()
                                       .eventLoopGroup(eventLoopGroup)
                                       .build();
    SdkAsyncHttpClient customClient =
            NettySdkHttpClientFactory.builder()
                                     .trustAllCertificates(true)
                                     .eventLoopGroupConfiguration(eventLoopGroupConfiguration)
                                     .build()
                                     .createHttpClient();

    makeSimpleRequest(customClient);
    customClient.close();

    Mockito.verify(threadFactory, atLeastOnce()).newThread(Mockito.any());
    Mockito.verify(eventLoopGroup, never()).shutdownGracefully();
}
 

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
public FabricClient(
    RpcConfig config,
    EventLoopGroup eventLoop,
    BufferAllocator allocator,
    FabricIdentity remoteIdentity,
    FabricIdentity localIdentity,
    FabricMessageHandler handler,
    FabricConnectionManager.CloseHandlerCreator closeHandlerFactory) {
  super(
      config,
      allocator.getAsByteBufAllocator(),
      eventLoop,
      RpcType.HANDSHAKE,
      FabricHandshake.class,
      FabricHandshake.PARSER);
  this.localIdentity = localIdentity;
  this.remoteIdentity = remoteIdentity;
  this.handler = handler;
  this.closeHandlerFactory = closeHandlerFactory;
  this.allocator = allocator;
}
 

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
/**
 * Attempts to determine the {@link Channel} class that corresponds to the given
 * event loop group.
 *
 * @param eventLoopGroup the event loop group to determine the {@link Channel} for
 * @return A {@link Channel} class for the given event loop group.
 */
public static Class<? extends Channel> resolveSocketChannelClass(EventLoopGroup eventLoopGroup) {
    if (eventLoopGroup instanceof DelegatingEventLoopGroup) {
        return resolveSocketChannelClass(((DelegatingEventLoopGroup) eventLoopGroup).getDelegate());
    }
    if (eventLoopGroup instanceof NioEventLoopGroup) {
        return NioSocketChannel.class;
    }
    if (eventLoopGroup instanceof EpollEventLoopGroup) {
        return EpollSocketChannel.class;
    }
    String socketFqcn = KNOWN_EL_GROUPS.get(eventLoopGroup.getClass().getName());
    if (socketFqcn == null) {
        throw new IllegalArgumentException("Unknown event loop group : " + eventLoopGroup.getClass());
    }
    return invokeSafely(() -> (Class<? extends Channel>) Class.forName(socketFqcn));
}
 

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
public void startUDPServer() throws InterruptedException {
    logger.info("Discovery UDPListener started");
    EventLoopGroup group = new NioEventLoopGroup(1);

    while (!shutdown) {
        Bootstrap bootstrap = this.createBootstrap(group);

        channel = bootstrap.bind(address, port).sync().channel();
        channel.closeFuture().sync();

        logger.warn("UDP channel closed. Recreating after 5 sec pause...");
        TimeUnit.SECONDS.sleep(5);
    }

    group.shutdownGracefully().sync();
}
 

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
@PostConstruct
public void start() {
    new Thread(() -> {
        logger.info("HttpProxyServer started on port: {}", port);
        EventLoopGroup bossGroup = new NioEventLoopGroup(1);
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup, workerGroup)
                    .channel(NioServerSocketChannel.class)
                    .handler(new LoggingHandler(LogLevel.DEBUG))
                    .childHandler(channelInitializer)
                    .bind(port).sync().channel().closeFuture().sync();
        } catch (InterruptedException e) {
            logger.error("shit happens", e);
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }).start();
}
 

import io.netty.channel.EventLoopGroup; //導入依賴的package包/類
UserRPCServer(
    BootStrapContext context,
    Provider<SabotContext> dbContext,
    Provider<UserWorker> worker,
    BufferAllocator allocator,
    EventLoopGroup eventLoopGroup,
    InboundImpersonationManager impersonationManager
    ) {
  super(UserRpcConfig.getMapping(context.getConfig(), context.getExecutor()),
      allocator.getAsByteBufAllocator(),
      eventLoopGroup);
  this.worker = worker;
  this.dbContext = dbContext;
  this.allocator = allocator;
  this.impersonationManager = impersonationManager;
}