Examples with AsyncPoolHandle com.linkedin.r2.transport.http.client.AsyncPoolHandle used on opensource projects

Example 1 with AsyncPoolHandle

use of com.linkedin.r2.transport.http.client.AsyncPoolHandle in project rest.li by linkedin.

the class Http2StreamCodec method write.

@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
    if (!(msg instanceof RequestWithCallback)) {
        ctx.write(msg, promise);
        return;
    }
    Request request = ((RequestWithCallback) msg).request();
    Http2ConnectionEncoder encoder = encoder();
    int streamId = connection().local().incrementAndGetNextStreamId();
    final ChannelFuture headersFuture;
    if (request instanceof StreamRequest) {
        final StreamRequest streamRequest = (StreamRequest) request;
        final Http2Headers http2Headers = NettyRequestAdapter.toHttp2Headers(streamRequest);
        final BufferedReader bufferedReader = new BufferedReader(ctx, encoder, streamId, ((RequestWithCallback) msg).handle());
        final OrderedEntityStreamReader reader = new OrderedEntityStreamReader(ctx, bufferedReader);
        streamRequest.getEntityStream().setReader(reader);
        LOG.debug("Sent HTTP/2 HEADERS frame, stream={}, end={}, headers={}, padding={}bytes", new Object[] { streamId, NOT_END_STREAM, http2Headers.size(), NO_PADDING });
        headersFuture = encoder.writeHeaders(ctx, streamId, http2Headers, NO_PADDING, NOT_END_STREAM, promise);
        headersFuture.addListener(future -> {
            if (future.isSuccess()) {
                reader.request(BufferedReader.MAX_BUFFERED_CHUNKS);
            }
        });
    } else if (request instanceof RestRequest) {
        final RestRequest restRequest = (RestRequest) request;
        final Http2Headers headers = NettyRequestAdapter.toHttp2Headers(restRequest);
        LOG.debug("Sent HTTP/2 HEADERS frame, stream={}, end={}, headers={}, padding={}bytes", new Object[] { streamId, NOT_END_STREAM, headers.size(), NO_PADDING });
        headersFuture = encoder.writeHeaders(ctx, streamId, headers, NO_PADDING, NOT_END_STREAM, promise);
        headersFuture.addListener(future -> {
            if (future.isSuccess()) {
                final ByteBuf data = Unpooled.wrappedBuffer(restRequest.getEntity().asByteBuffer());
                LOG.debug("Sent HTTP/2 DATA frame, stream={}, end={}, data={}bytes, padding={}bytes", new Object[] { streamId, END_STREAM, data.readableBytes(), NO_PADDING });
                encoder.writeData(ctx, streamId, data, NO_PADDING, END_STREAM, ctx.newPromise());
                ctx.channel().flush();
            }
        });
    } else {
        // Release the handle to put the channel back to the pool
        ((RequestWithCallback) msg).handle().release();
        throw new IllegalArgumentException("Request is neither StreamRequest or RestRequest");
    }
    final TransportCallback<?> callback = ((RequestWithCallback) msg).callback();
    @SuppressWarnings("unchecked") final TimeoutAsyncPoolHandle<Channel> handle = (TimeoutAsyncPoolHandle<Channel>) ((RequestWithCallback) msg).handle();
    headersFuture.addListener(future -> {
        if (future.isSuccess()) {
            // Sets TransportCallback as a stream property to be retrieved later
            Http2PipelinePropertyUtil.set(ctx, connection(), streamId, Http2ClientPipelineInitializer.CALLBACK_ATTR_KEY, callback);
            // Sets AsyncPoolHandle as a stream property to be retrieved later
            Http2PipelinePropertyUtil.set(ctx, connection(), streamId, Http2ClientPipelineInitializer.CHANNEL_POOL_HANDLE_ATTR_KEY, handle);
            // Sets a timeout task to reset stream
            // Channel pool handle is also released at timeout
            handle.addTimeoutTask(() -> {
                LOG.debug("Reset stream upon timeout, stream={}", streamId);
                resetStream(ctx, streamId, Http2Error.CANCEL.code(), ctx.newPromise());
                ctx.flush();
            });
        } else {
            // Invokes callback onResponse with the error thrown during write header or data
            callback.onResponse(TransportResponseImpl.error(future.cause()));
            // Releases the handle to put the channel back to the pool
            handle.release();
            // Resets the stream if a stream is created after we sent header
            if (connection().stream(streamId) != null) {
                LOG.debug("Reset stream upon timeout, stream={}", streamId);
                resetStream(ctx, streamId, Http2Error.CANCEL.code(), ctx.newPromise());
                ctx.flush();
            }
        }
    });
}

Example 2 with AsyncPoolHandle

use of com.linkedin.r2.transport.http.client.AsyncPoolHandle in project rest.li by linkedin.

the class Http2StreamCodec method write.

@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
    if (!(msg instanceof RequestWithCallback)) {
        ctx.write(msg, promise);
        return;
    }
    Request request = ((RequestWithCallback) msg).request();
    Http2ConnectionEncoder encoder = encoder();
    int streamId = connection().local().incrementAndGetNextStreamId();
    if (request instanceof StreamRequest) {
        LOG.debug("Writing StreamRequest...");
        StreamRequest streamRequest = (StreamRequest) request;
        Http2Headers http2Headers = NettyRequestAdapter.toHttp2Headers(streamRequest);
        BufferedReader reader = new BufferedReader(ctx, encoder, streamId, ((RequestWithCallback) msg).handle());
        streamRequest.getEntityStream().setReader(reader);
        encoder.writeHeaders(ctx, streamId, http2Headers, NO_PADDING, NOT_END_STREAM, promise).addListener(future -> reader.request());
        LOG.debug("Sent HTTP/2 HEADERS frame, stream={}, end={}, headers={}, padding={}bytes", new Object[] { streamId, NOT_END_STREAM, http2Headers.size(), NO_PADDING });
    } else if (request instanceof RestRequest) {
        LOG.debug("Writing RestRequest...");
        PromiseCombiner promiseCombiner = new PromiseCombiner();
        ChannelPromise headersPromise = ctx.channel().newPromise();
        ChannelPromise dataPromise = ctx.channel().newPromise();
        promiseCombiner.add(headersPromise);
        promiseCombiner.add(dataPromise);
        promiseCombiner.finish(promise);
        RestRequest restRequest = (RestRequest) request;
        Http2Headers headers = NettyRequestAdapter.toHttp2Headers(restRequest);
        encoder.writeHeaders(ctx, streamId, headers, NO_PADDING, NOT_END_STREAM, headersPromise);
        LOG.debug("Sent HTTP/2 HEADERS frame, stream={}, end={}, headers={}, padding={}bytes", new Object[] { streamId, NOT_END_STREAM, headers.size(), NO_PADDING });
        ByteBuf data = Unpooled.wrappedBuffer(restRequest.getEntity().asByteBuffer());
        encoder.writeData(ctx, streamId, data, NO_PADDING, END_STREAM, dataPromise);
        LOG.debug("Sent HTTP/2 DATA frame, stream={}, end={}, data={}bytes, padding={}bytes", new Object[] { streamId, END_STREAM, data.readableBytes(), NO_PADDING });
    } else {
        // Request type is not supported. Returns channel back to the pool and throws exception.
        ctx.fireChannelRead(((RequestWithCallback) msg).handle());
        throw new IllegalArgumentException("Request is neither StreamRequest or RestRequest");
    }
    // Sets TransportCallback as a stream property to be retrieved later
    TransportCallback<?> callback = ((RequestWithCallback) msg).callback();
    Http2Connection.PropertyKey callbackKey = ctx.channel().attr(Http2ClientPipelineInitializer.CALLBACK_ATTR_KEY).get();
    connection().stream(streamId).setProperty(callbackKey, callback);
    // Sets AsyncPoolHandle as a stream property to be retrieved later
    AsyncPoolHandle<?> handle = ((RequestWithCallback) msg).handle();
    Http2Connection.PropertyKey handleKey = ctx.channel().attr(Http2ClientPipelineInitializer.CHANNEL_POOL_HANDLE_ATTR_KEY).get();
    connection().stream(streamId).setProperty(handleKey, handle);
}