Examples with Channel io.netty.channel.Channel used on opensource projects

Example 36 with Channel

use of io.netty.channel.Channel in project async-http-client by AsyncHttpClient.

the class ChannelManager method getClientStats.

public ClientStats getClientStats() {
    Map<String, Long> totalConnectionsPerHost = openChannels.stream().map(Channel::remoteAddress).filter(a -> a.getClass() == InetSocketAddress.class).map(a -> (InetSocketAddress) a).map(InetSocketAddress::getHostName).collect(Collectors.groupingBy(Function.identity(), Collectors.counting()));
    Map<String, Long> idleConnectionsPerHost = channelPool.getIdleChannelCountPerHost();
    Map<String, HostStats> statsPerHost = totalConnectionsPerHost.entrySet().stream().collect(Collectors.toMap(Entry::getKey, entry -> {
        final long totalConnectionCount = entry.getValue();
        final long idleConnectionCount = idleConnectionsPerHost.getOrDefault(entry.getKey(), 0L);
        final long activeConnectionCount = totalConnectionCount - idleConnectionCount;
        return new HostStats(activeConnectionCount, idleConnectionCount);
    }));
    return new ClientStats(statsPerHost);
}

Example 37 with Channel

use of io.netty.channel.Channel in project async-http-client by AsyncHttpClient.

the class NettyRequestSender method sendRequestThroughSslProxy.

/**
     * Using CONNECT depends on wither we can fetch a valid channel or not Loop until we get a valid channel from the pool and it's still valid once the request is built @
     */
@SuppressWarnings("unused")
private <//
T> //
ListenableFuture<T> sendRequestThroughSslProxy(//
Request request, //
AsyncHandler<T> asyncHandler, //
NettyResponseFuture<T> future, //
boolean performingNextRequest, ProxyServer proxyServer) {
    NettyResponseFuture<T> newFuture = null;
    for (int i = 0; i < 3; i++) {
        Channel channel = getOpenChannel(future, request, proxyServer, asyncHandler);
        if (Channels.isChannelValid(channel))
            if (newFuture == null)
                newFuture = newNettyRequestAndResponseFuture(request, asyncHandler, future, proxyServer, false);
        if (Channels.isChannelValid(channel))
            // gain
            return sendRequestWithOpenChannel(request, proxyServer, newFuture, asyncHandler, channel);
        else
            // pool is empty
            break;
    }
    newFuture = newNettyRequestAndResponseFuture(request, asyncHandler, future, proxyServer, true);
    return sendRequestWithNewChannel(request, proxyServer, newFuture, asyncHandler, performingNextRequest);
}

Example 38 with Channel

use of io.netty.channel.Channel in project async-http-client by AsyncHttpClient.

the class NettyChannelConnector method connect0.

private void connect0(Bootstrap bootstrap, final NettyConnectListener<?> connectListener, InetSocketAddress remoteAddress) {
    //
    bootstrap.connect(remoteAddress, localAddress).addListener(new SimpleChannelFutureListener() {

        @Override
        public void onSuccess(Channel channel) {
            if (asyncHandlerExtensions != null) {
                asyncHandlerExtensions.onTcpConnectSuccess(remoteAddress, channel);
            }
            connectListener.onSuccess(channel, remoteAddress);
        }

        @Override
        public void onFailure(Channel channel, Throwable t) {
            if (asyncHandlerExtensions != null)
                asyncHandlerExtensions.onTcpConnectFailure(remoteAddress, t);
            boolean retry = pickNextRemoteAddress();
            if (retry)
                NettyChannelConnector.this.connect(bootstrap, connectListener);
            else
                connectListener.onFailure(channel, t);
        }
    });
}

Example 39 with Channel

use of io.netty.channel.Channel 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 40 with Channel

use of io.netty.channel.Channel 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);
        }
    }
}