Examples with StreamResponseBuilder com.linkedin.r2.message.stream.StreamResponseBuilder used on opensource projects

Example 21 with StreamResponseBuilder

use of com.linkedin.r2.message.stream.StreamResponseBuilder in project rest.li by linkedin.

the class TestJetty404 method setup.

@BeforeClass
public void setup() throws IOException {
    _clientFactory = new HttpClientFactory.Builder().build();
    _client = new TransportClientAdapter(_clientFactory.getClient(Collections.<String, String>emptyMap()), true);
    _server = new HttpServerFactory().createH2cServer(PORT, "/correct-path", 50, new TransportDispatcher() {

        @Override
        public void handleRestRequest(RestRequest req, Map<String, String> wireAttrs, RequestContext requestContext, TransportCallback<RestResponse> callback) {
            callback.onResponse(TransportResponseImpl.success(new RestResponseBuilder().build()));
        }

        @Override
        public void handleStreamRequest(StreamRequest req, Map<String, String> wireAttrs, RequestContext requestContext, TransportCallback<StreamResponse> callback) {
            req.getEntityStream().setReader(new DrainReader());
            callback.onResponse(TransportResponseImpl.success(new StreamResponseBuilder().build(EntityStreams.emptyStream())));
        }
    }, true);
    _server.start();
}

Example 22 with StreamResponseBuilder

use of com.linkedin.r2.message.stream.StreamResponseBuilder in project rest.li by linkedin.

the class ServerStreamCompressionFilter method onStreamResponse.

/**
 * Optionally compresses outgoing response
 */
@Override
public void onStreamResponse(final StreamResponse res, final RequestContext requestContext, final Map<String, String> wireAttrs, final NextFilter<StreamRequest, StreamResponse> nextFilter) {
    StreamResponse response = res;
    try {
        String responseCompression = (String) requestContext.getLocalAttr(HttpConstants.ACCEPT_ENCODING);
        if (responseCompression == null) {
            throw new CompressionException(HttpConstants.ACCEPT_ENCODING + " not in local attribute.");
        }
        List<AcceptEncoding> parsedEncodings = AcceptEncoding.parseAcceptEncodingHeader(responseCompression, _supportedEncoding);
        StreamEncodingType selectedEncoding = AcceptEncoding.chooseBest(parsedEncodings);
        // Check if there exists an acceptable encoding
        if (selectedEncoding == null) {
            // Not acceptable encoding status
            response = new StreamResponseBuilder().setStatus(HttpConstants.NOT_ACCEPTABLE).build(EntityStreams.emptyStream());
        } else if (selectedEncoding != StreamEncodingType.IDENTITY) {
            final int threshold = (Integer) requestContext.getLocalAttr(HttpConstants.HEADER_RESPONSE_COMPRESSION_THRESHOLD);
            final StreamingCompressor compressor = selectedEncoding.getCompressor(_executor);
            PartialReader reader = new PartialReader(threshold, new Callback<EntityStream[]>() {

                @Override
                public void onError(Throwable ex) {
                    nextFilter.onError(ex, requestContext, wireAttrs);
                }

                @Override
                public void onSuccess(EntityStream[] results) {
                    if (// entity stream is less than threshold
                    results.length == 1) {
                        StreamResponse response = res.builder().build(results[0]);
                        nextFilter.onResponse(response, requestContext, wireAttrs);
                    } else {
                        EntityStream compressedStream = compressor.deflate(EntityStreams.newEntityStream(new CompositeWriter(results)));
                        StreamResponseBuilder builder = res.builder();
                        // remove original content-length header if presents.
                        if (builder.getHeader(HttpConstants.CONTENT_LENGTH) != null) {
                            Map<String, String> headers = stripHeaders(builder.getHeaders(), HttpConstants.CONTENT_LENGTH);
                            builder.setHeaders(headers);
                        }
                        StreamResponse response = builder.addHeaderValue(HttpConstants.CONTENT_ENCODING, compressor.getContentEncodingName()).build(compressedStream);
                        nextFilter.onResponse(response, requestContext, wireAttrs);
                    }
                }
            });
            res.getEntityStream().setReader(reader);
            return;
        }
    } catch (CompressionException e) {
        LOG.error(e.getMessage(), e.getCause());
    }
    nextFilter.onResponse(response, requestContext, wireAttrs);
}

Example 23 with StreamResponseBuilder

use of com.linkedin.r2.message.stream.StreamResponseBuilder in project rest.li by linkedin.

the class ServerStreamCompressionFilter method onStreamRequest.

/**
 * Handles compression tasks for incoming requests
 */
@Override
public void onStreamRequest(StreamRequest req, RequestContext requestContext, Map<String, String> wireAttrs, NextFilter<StreamRequest, StreamResponse> nextFilter) {
    try {
        // Check if the request is compressed, if so, decompress
        String requestContentEncoding = req.getHeader(HttpConstants.CONTENT_ENCODING);
        if (requestContentEncoding != null) {
            // This must be a specific compression type other than *
            StreamEncodingType encoding = StreamEncodingType.get(requestContentEncoding.trim().toLowerCase());
            if (encoding == null || encoding == StreamEncodingType.ANY) {
                throw new CompressionException(CompressionConstants.UNSUPPORTED_ENCODING + requestContentEncoding);
            }
            // Process the correct content-encoding types only
            StreamingCompressor compressor = encoding.getCompressor(_executor);
            if (compressor == null) {
                throw new CompressionException(CompressionConstants.UNKNOWN_ENCODING + encoding);
            }
            EntityStream uncompressedStream = compressor.inflate(req.getEntityStream());
            Map<String, String> headers = stripHeaders(req.getHeaders(), HttpConstants.CONTENT_ENCODING, HttpConstants.CONTENT_LENGTH);
            req = req.builder().setHeaders(headers).build(uncompressedStream);
        }
        // Get client support for compression and flag compress if need be
        String responseCompression = req.getHeader(HttpConstants.ACCEPT_ENCODING);
        if (responseCompression == null) {
            // per RFC 2616, section 14.3, if no Accept-Encoding field is present in a request,
            // server SHOULD use "identity" content-encoding if it is available.
            responseCompression = StreamEncodingType.IDENTITY.getHttpName();
        }
        if (!responseCompression.equalsIgnoreCase(StreamEncodingType.IDENTITY.getHttpName())) {
            requestContext.putLocalAttr(HttpConstants.HEADER_RESPONSE_COMPRESSION_THRESHOLD, _serverCompressionHelper.getResponseCompressionThreshold(req));
        }
        requestContext.putLocalAttr(HttpConstants.ACCEPT_ENCODING, responseCompression);
        nextFilter.onRequest(req, requestContext, wireAttrs);
    } catch (CompressionException ex) {
        LOG.error(ex.getMessage(), ex.getCause());
        StreamResponse streamResponse = new StreamResponseBuilder().setStatus(HttpConstants.UNSUPPORTED_MEDIA_TYPE).build(EntityStreams.emptyStream());
        nextFilter.onError(new StreamException(streamResponse, ex), requestContext, wireAttrs);
    }
}

Example 24 with StreamResponseBuilder

use of com.linkedin.r2.message.stream.StreamResponseBuilder in project rest.li by linkedin.

the class TestBackupRequestsClient method createAlwaysBackupClientWithHosts.

private BackupRequestsClient createAlwaysBackupClientWithHosts(List<String> uris, Deque<URI> hostsReceivingRequestList, int responseDelayNano, int backupDelayNano, boolean isD2Async) throws IOException {
    Map<URI, Map<Integer, PartitionData>> partitionDescriptions = new HashMap<>();
    uris.forEach(uri -> partitionDescriptions.put(URI.create(uri), Collections.singletonMap(0, new PartitionData(1))));
    StaticLoadBalancerState LbState = new StaticLoadBalancerState() {

        @Override
        public TrackerClient getClient(String serviceName, URI uri) {
            return new DegraderTrackerClientImpl(uri, partitionDescriptions.get(uri), null, SystemClock.instance(), null) {

                @Override
                public void restRequest(RestRequest request, RequestContext requestContext, Map<String, String> wireAttrs, TransportCallback<RestResponse> callback) {
                    // whenever a trackerClient is used to make request, record down it's hostname
                    hostsReceivingRequestList.add(uri);
                    // delay response to allow backup request to happen
                    _executor.schedule(() -> callback.onResponse(TransportResponseImpl.success(new RestResponseBuilder().build())), responseDelayNano, TimeUnit.NANOSECONDS);
                }

                @Override
                public void streamRequest(StreamRequest request, RequestContext requestContext, Map<String, String> wireAttrs, TransportCallback<StreamResponse> callback) {
                    // whenever a trackerClient is used to make request, record down it's hostname
                    hostsReceivingRequestList.add(uri);
                    if (null != requestContext.getLocalAttr(R2Constants.BACKUP_REQUEST_BUFFERED_BODY)) {
                        callback.onResponse(TransportResponseImpl.success(new StreamResponseBuilder().setHeader(BUFFERED_HEADER, String.valueOf(requestContext.getLocalAttr(R2Constants.BACKUP_REQUEST_BUFFERED_BODY) != null)).build(EntityStreams.emptyStream())));
                        return;
                    }
                    request.getEntityStream().setReader(new DrainReader() {

                        public void onDone() {
                            // delay response to allow backup request to happen
                            _executor.schedule(() -> callback.onResponse(TransportResponseImpl.success(new StreamResponseBuilder().setHeader(BUFFERED_HEADER, String.valueOf(requestContext.getLocalAttr(R2Constants.BACKUP_REQUEST_BUFFERED_BODY) != null)).build(EntityStreams.emptyStream()))), responseDelayNano, TimeUnit.NANOSECONDS);
                        }
                    });
                }
            };
        }
    };
    LbState.TEST_URIS_PARTITIONDESCRIPTIONS.putAll(partitionDescriptions);
    LbState.TEST_SERVICE_BACKUP_REQUEST_PROPERTIES.add(createBackupRequestsConfiguration(5, "get"));
    LbState.refreshDefaultProperties();
    LoadBalancer loadBalancer = new SimpleLoadBalancer(LbState, _executor);
    DynamicClient dynamicClient = new DynamicClient(loadBalancer, null);
    return new BackupRequestsClient(dynamicClient, loadBalancer, _executor, null, 10, TimeUnit.SECONDS, isD2Async) {

        @Override
        Optional<TrackingBackupRequestsStrategy> getStrategyAfterUpdate(final String serviceName, final String operation) {
            // constantly enable backup request after backupDelayNano time.
            BackupRequestsStrategy alwaysBackup = new TestTrackingBackupRequestsStrategy.MockBackupRequestsStrategy(() -> Optional.of((long) backupDelayNano), () -> true);
            return Optional.of(new TrackingBackupRequestsStrategy(alwaysBackup));
        }
    };
}

Example 25 with StreamResponseBuilder

use of com.linkedin.r2.message.stream.StreamResponseBuilder in project rest.li by linkedin.

the class Http2FrameListener method onHeadersRead.

@Override
public void onHeadersRead(ChannelHandlerContext ctx, int streamId, Http2Headers headers, int padding, boolean endOfStream) throws Http2Exception {
    LOG.debug("Received HTTP/2 HEADERS frame, stream={}, end={}, headers={}, padding={}bytes", new Object[] { streamId, endOfStream, headers.size(), padding });
    // Ignores response for the upgrade request
    if (streamId == Http2CodecUtil.HTTP_UPGRADE_STREAM_ID) {
        return;
    }
    // Refactored duplicate code to new code pipeline.
    final StreamResponseBuilder builder = Http2MessageDecoders.ResponseDecoder.buildStreamResponse(headers);
    // Gets async pool handle from stream properties
    TimeoutAsyncPoolHandle<?> timeoutHandle = Http2PipelinePropertyUtil.remove(ctx, _connection, streamId, Http2ClientPipelineInitializer.CHANNEL_POOL_HANDLE_ATTR_KEY);
    if (timeoutHandle == null) {
        _lifecycleManager.onError(ctx, false, Http2Exception.connectionError(Http2Error.PROTOCOL_ERROR, "No channel pool handle is associated with this stream", streamId));
        return;
    }
    final StreamResponse response;
    if (endOfStream) {
        response = builder.build(EntityStreams.emptyStream());
        // Release the handle to put the channel back to the pool
        timeoutHandle.release();
    } else {
        // Associate an entity stream writer to the HTTP/2 stream
        final TimeoutBufferedWriter writer = new TimeoutBufferedWriter(ctx, streamId, _maxContentLength, timeoutHandle);
        if (_connection.stream(streamId).setProperty(_writerKey, writer) != null) {
            _lifecycleManager.onError(ctx, false, Http2Exception.connectionError(Http2Error.PROTOCOL_ERROR, "Another writer has already been associated with current stream ID", streamId));
            return;
        }
        // Prepares StreamResponse for the channel pipeline
        EntityStream entityStream = EntityStreams.newEntityStream(writer);
        response = builder.build(entityStream);
    }
    // Gets callback from stream properties
    TransportCallback<?> callback = Http2PipelinePropertyUtil.remove(ctx, _connection, streamId, Http2ClientPipelineInitializer.CALLBACK_ATTR_KEY);
    if (callback != null) {
        ctx.fireChannelRead(new ResponseWithCallback<Response, TransportCallback<?>>(response, callback));
    }
}