| /* |
| * 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.runners.direct.portable; |
| |
| import java.util.function.Consumer; |
| import org.apache.beam.model.pipeline.v1.RunnerApi; |
| import org.apache.beam.model.pipeline.v1.RunnerApi.Components; |
| import org.apache.beam.runners.core.construction.graph.PipelineNode; |
| import org.apache.beam.runners.core.construction.graph.PipelineNode.PCollectionNode; |
| import org.apache.beam.runners.fnexecution.control.OutputReceiverFactory; |
| import org.apache.beam.sdk.fn.data.FnDataReceiver; |
| import org.apache.beam.sdk.util.WindowedValue; |
| |
| /** |
| * An {@link OutputReceiverFactory} which adds received elements to {@link UncommittedBundle} |
| * instances. The produced {@link UncommittedBundle bundles} are added to a provided {@link |
| * StepTransformResult.Builder StepTransformResult Builder}. |
| */ |
| class BundleFactoryOutputReceiverFactory implements OutputReceiverFactory { |
| private final BundleFactory bundleFactory; |
| private final RunnerApi.Components components; |
| |
| private final Consumer<UncommittedBundle<?>> bundleConsumer; |
| |
| private BundleFactoryOutputReceiverFactory( |
| BundleFactory bundleFactory, |
| Components components, |
| Consumer<UncommittedBundle<?>> bundleConsumer) { |
| this.bundleFactory = bundleFactory; |
| this.components = components; |
| this.bundleConsumer = bundleConsumer; |
| } |
| |
| public static OutputReceiverFactory create( |
| BundleFactory bundleFactory, |
| Components components, |
| Consumer<UncommittedBundle<?>> resultBuilder) { |
| return new BundleFactoryOutputReceiverFactory(bundleFactory, components, resultBuilder); |
| } |
| |
| @Override |
| public <OutputT> FnDataReceiver<OutputT> create(String pCollectionId) { |
| PCollectionNode pcollection = |
| PipelineNode.pCollection(pCollectionId, components.getPcollectionsOrThrow(pCollectionId)); |
| return create(pcollection); |
| } |
| |
| private <ElemT, OutputT> FnDataReceiver<OutputT> create(PCollectionNode pcollection) { |
| UncommittedBundle<ElemT> bundle = bundleFactory.createBundle(pcollection); |
| bundleConsumer.accept(bundle); |
| return input -> bundle.add((WindowedValue<ElemT>) input); |
| } |
| } |