Examples with ChannelFuture org.apache.flink.shaded.netty4.io.netty.channel.ChannelFuture used on opensource projects

Example 51 with ChannelFuture

use of org.apache.flink.shaded.netty4.io.netty.channel.ChannelFuture in project cradle by BingLau7.

the class EchoClient method start.

void start() throws Exception {
    EventLoopGroup group = new NioEventLoopGroup();
    try {
        // 指定 EventLoopGroup 以处理客户端时间；需要适用于 NIO 的实现
        Bootstrap b = new Bootstrap();
        b.group(group).channel(NioSocketChannel.class).remoteAddress(new InetSocketAddress(host, port)).handler(new ChannelInitializer<SocketChannel>() {

            protected void initChannel(SocketChannel ch) throws Exception {
                ch.pipeline().addLast(new EchoClientHandler());
            }
        });
        // 连接远程节点，阻塞等待直到连接完成
        ChannelFuture f = b.connect().sync();
        // 阻塞，直到 Channel 关闭
        f.channel().closeFuture().sync();
    } finally {
        // 关闭线程池并释放所有的资源
        group.shutdownGracefully().sync();
    }
}

Example 52 with ChannelFuture

use of org.apache.flink.shaded.netty4.io.netty.channel.ChannelFuture in project cradle by BingLau7.

the class EchoServer method start.

void start() throws Exception {
    // 创建 Event-LoopGroup
    NioEventLoopGroup group = new NioEventLoopGroup();
    try {
        // 创建 Server-Bootstrap
        ServerBootstrap b = new ServerBootstrap();
        b.group(group).channel(NioServerSocketChannel.class).localAddress(new InetSocketAddress(port)).childHandler(new ChannelInitializer<SocketChannel>() {

            protected void initChannel(SocketChannel socketChannel) throws Exception {
                socketChannel.pipeline().addLast(new EchoServerHandler());
            }
        });
        // 异步地绑定服务器；调用 sync() 方法阻塞等待直到绑定完成
        ChannelFuture f = b.bind().sync();
        System.out.println(EchoServer.class.getName() + " started and listen on " + f.channel().localAddress());
        // 获取 Channel 的 CloseFuture，并且阻塞当前线程直到它完成
        f.channel().closeFuture().sync();
    } finally {
        // 关闭 EventLoopGroup，释放所有的资源
        group.shutdownGracefully().sync();
    }
}

Example 53 with ChannelFuture

use of org.apache.flink.shaded.netty4.io.netty.channel.ChannelFuture in project alluxio by Alluxio.

the class NettyRemoteBlockWriter method write.

@Override
public void write(byte[] bytes, int offset, int length) throws IOException {
    Channel channel = null;
    ClientHandler clientHandler = null;
    Metrics.NETTY_BLOCK_WRITE_OPS.inc();
    try {
        channel = mContext.acquireNettyChannel(mAddress);
        if (!(channel.pipeline().last() instanceof ClientHandler)) {
            channel.pipeline().addLast(new ClientHandler());
        }
        clientHandler = (ClientHandler) channel.pipeline().last();
        SingleResponseListener listener = new SingleResponseListener();
        clientHandler.addListener(listener);
        ChannelFuture channelFuture = channel.writeAndFlush(new RPCBlockWriteRequest(mSessionId, mBlockId, mWrittenBytes, length, new DataByteArrayChannel(bytes, offset, length))).sync();
        if (channelFuture.isDone() && !channelFuture.isSuccess()) {
            LOG.error("Failed to write to %s for block %d with error %s.", mAddress.toString(), mBlockId, channelFuture.cause());
            throw new IOException(channelFuture.cause());
        }
        RPCResponse response = listener.get(NettyClient.TIMEOUT_MS, TimeUnit.MILLISECONDS);
        switch(response.getType()) {
            case RPC_BLOCK_WRITE_RESPONSE:
                RPCBlockWriteResponse resp = (RPCBlockWriteResponse) response;
                RPCResponse.Status status = resp.getStatus();
                LOG.debug("status: {} from remote machine {} received", status, mAddress);
                if (status != RPCResponse.Status.SUCCESS) {
                    throw new IOException(ExceptionMessage.BLOCK_WRITE_ERROR.getMessage(mBlockId, mSessionId, mAddress, status.getMessage()));
                }
                mWrittenBytes += length;
                break;
            case RPC_ERROR_RESPONSE:
                RPCErrorResponse error = (RPCErrorResponse) response;
                throw new IOException(error.getStatus().getMessage());
            default:
                throw new IOException(ExceptionMessage.UNEXPECTED_RPC_RESPONSE.getMessage(response.getType(), RPCMessage.Type.RPC_BLOCK_WRITE_RESPONSE));
        }
    } catch (Exception e) {
        Metrics.NETTY_BLOCK_WRITE_FAILURES.inc();
        try {
            // TODO(peis): We should not close the channel unless it is an exception caused by network.
            if (channel != null) {
                channel.close().sync();
            }
        } catch (InterruptedException ee) {
            Throwables.propagate(ee);
        }
        throw new IOException(e);
    } finally {
        if (clientHandler != null) {
            clientHandler.removeListeners();
        }
        if (channel != null) {
            mContext.releaseNettyChannel(mAddress, channel);
        }
    }
}

Example 54 with ChannelFuture

use of org.apache.flink.shaded.netty4.io.netty.channel.ChannelFuture in project alluxio by Alluxio.

the class NettyUnderFileSystemBlockReader method read.

@Override
public ByteBuffer read(InetSocketAddress address, long blockId, long offset, long length, long sessionId, boolean noCache) throws IOException {
    Channel channel = null;
    ClientHandler clientHandler = null;
    Metrics.NETTY_UFS_BLOCK_READ_OPS.inc();
    try {
        channel = mContext.acquireNettyChannel(address);
        if (!(channel.pipeline().last() instanceof ClientHandler)) {
            channel.pipeline().addLast(new ClientHandler());
        }
        clientHandler = (ClientHandler) channel.pipeline().last();
        SingleResponseListener listener = new SingleResponseListener();
        clientHandler.addListener(listener);
        ChannelFuture channelFuture = channel.writeAndFlush(new RPCUnderFileSystemBlockReadRequest(blockId, offset, length, sessionId, noCache));
        channelFuture = channelFuture.sync();
        if (channelFuture.isDone() && !channelFuture.isSuccess()) {
            LOG.error("Failed to read from %s for block %d with error %s.", address.toString(), blockId, channelFuture.cause());
            throw new IOException(channelFuture.cause());
        }
        RPCResponse response = listener.get(NettyClient.TIMEOUT_MS, TimeUnit.MILLISECONDS);
        switch(response.getType()) {
            case RPC_BLOCK_READ_RESPONSE:
                RPCBlockReadResponse blockResponse = (RPCBlockReadResponse) response;
                LOG.debug("Data {} from machine {} received", blockId, address);
                RPCResponse.Status status = blockResponse.getStatus();
                if (status == RPCResponse.Status.SUCCESS) {
                    // always clear the previous response before reading another one
                    close();
                    mReadResponse = blockResponse;
                    return blockResponse.getPayloadDataBuffer().getReadOnlyByteBuffer();
                }
                throw new IOException(status.getMessage() + " response: " + blockResponse);
            case RPC_ERROR_RESPONSE:
                RPCErrorResponse error = (RPCErrorResponse) response;
                throw new IOException(error.getStatus().getMessage());
            default:
                throw new IOException(ExceptionMessage.UNEXPECTED_RPC_RESPONSE.getMessage(response.getType(), RPCMessage.Type.RPC_BLOCK_READ_RESPONSE));
        }
    } catch (Exception e) {
        Metrics.NETTY_UFS_BLOCK_READ_FAILURES.inc();
        try {
            if (channel != null) {
                channel.close().sync();
            }
        } catch (InterruptedException ee) {
            throw new RuntimeException(ee);
        }
        throw new IOException(e);
    } finally {
        if (clientHandler != null) {
            clientHandler.removeListeners();
        }
        if (channel != null) {
            mContext.releaseNettyChannel(address, channel);
        }
    }
}

Example 55 with ChannelFuture

use of org.apache.flink.shaded.netty4.io.netty.channel.ChannelFuture in project alluxio by Alluxio.

the class NettyUnderFileSystemFileWriter method write.

@Override
public void write(InetSocketAddress address, long ufsFileId, long fileOffset, byte[] source, int offset, int length) throws IOException {
    Channel channel = null;
    ClientHandler clientHandler = null;
    Metrics.NETTY_UFS_WRITE_OPS.inc();
    try {
        channel = mContext.acquireNettyChannel(address);
        if (!(channel.pipeline().last() instanceof ClientHandler)) {
            channel.pipeline().addLast(new ClientHandler());
        }
        clientHandler = (ClientHandler) channel.pipeline().last();
        SingleResponseListener listener = new SingleResponseListener();
        clientHandler.addListener(listener);
        ChannelFuture channelFuture = channel.writeAndFlush(new RPCFileWriteRequest(ufsFileId, fileOffset, length, new DataByteArrayChannel(source, offset, length))).sync();
        if (channelFuture.isDone() && !channelFuture.isSuccess()) {
            LOG.error("Failed to read ufs file from %s for ufsFilId %d with error %s.", address.toString(), ufsFileId, channelFuture.cause());
            throw new IOException(channelFuture.cause());
        }
        RPCResponse response = listener.get(NettyClient.TIMEOUT_MS, TimeUnit.MILLISECONDS);
        switch(response.getType()) {
            case RPC_FILE_WRITE_RESPONSE:
                RPCFileWriteResponse resp = (RPCFileWriteResponse) response;
                RPCResponse.Status status = resp.getStatus();
                LOG.debug("status: {} from remote machine {} received", status, address);
                if (status != RPCResponse.Status.SUCCESS) {
                    throw new IOException(ExceptionMessage.UNDER_FILE_WRITE_ERROR.getMessage(ufsFileId, address, status.getMessage()));
                }
                break;
            case RPC_ERROR_RESPONSE:
                RPCErrorResponse error = (RPCErrorResponse) response;
                throw new IOException(error.getStatus().getMessage());
            default:
                throw new IOException(ExceptionMessage.UNEXPECTED_RPC_RESPONSE.getMessage(response.getType(), RPCMessage.Type.RPC_FILE_WRITE_RESPONSE));
        }
    } catch (Exception e) {
        Metrics.NETTY_UFS_WRITE_FAILURES.inc();
        try {
            if (channel != null) {
                channel.close().sync();
            }
        } catch (InterruptedException ee) {
            Throwables.propagate(ee);
        }
        throw new IOException(e);
    } finally {
        if (clientHandler != null) {
            clientHandler.removeListeners();
        }
        if (channel != null) {
            mContext.releaseNettyChannel(address, channel);
        }
    }
}