| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.beam.fn.harness.stream; |
| |
| import java.util.List; |
| import org.apache.beam.sdk.extensions.gcp.options.GcsOptions; |
| import org.apache.beam.sdk.fn.stream.OutboundObserverFactory; |
| import org.apache.beam.sdk.options.ExperimentalOptions; |
| import org.apache.beam.sdk.options.PipelineOptions; |
| import org.apache.beam.vendor.grpc.v1p13p1.io.grpc.stub.StreamObserver; |
| |
| /** |
| * Uses {@link PipelineOptions} to configure which underlying {@link StreamObserver} implementation |
| * to use in the java SDK harness. |
| */ |
| public abstract class HarnessStreamObserverFactories { |
| public static OutboundObserverFactory fromOptions(PipelineOptions options) { |
| List<String> experiments = options.as(ExperimentalOptions.class).getExperiments(); |
| if (experiments != null && experiments.contains("beam_fn_api_buffered_stream")) { |
| int bufferSize = getBufferSize(experiments); |
| if (bufferSize > 0) { |
| return OutboundObserverFactory.clientBuffered( |
| options.as(GcsOptions.class).getExecutorService(), bufferSize); |
| } |
| return OutboundObserverFactory.clientBuffered( |
| options.as(GcsOptions.class).getExecutorService()); |
| } |
| return OutboundObserverFactory.clientDirect(); |
| } |
| |
| private static int getBufferSize(List<String> experiments) { |
| for (String experiment : experiments) { |
| if (experiment.startsWith("beam_fn_api_buffered_stream_buffer_size=")) { |
| return Integer.parseInt( |
| experiment.substring("beam_fn_api_buffered_stream_buffer_size=".length())); |
| } |
| } |
| return -1; |
| } |
| } |