| /* |
| * 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.core.construction; |
| |
| import static org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkState; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.hamcrest.Matchers.anyOf; |
| import static org.hamcrest.Matchers.not; |
| |
| import java.util.List; |
| import java.util.concurrent.atomic.AtomicReference; |
| import org.apache.beam.sdk.Pipeline.PipelineVisitor; |
| import org.apache.beam.sdk.coders.BigEndianLongCoder; |
| import org.apache.beam.sdk.coders.Coder; |
| import org.apache.beam.sdk.coders.KvCoder; |
| import org.apache.beam.sdk.io.GenerateSequence; |
| import org.apache.beam.sdk.io.range.OffsetRange; |
| import org.apache.beam.sdk.runners.AppliedPTransform; |
| import org.apache.beam.sdk.runners.PTransformOverride; |
| import org.apache.beam.sdk.runners.TransformHierarchy.Node; |
| import org.apache.beam.sdk.testing.TestPipeline; |
| import org.apache.beam.sdk.transforms.Materializations; |
| import org.apache.beam.sdk.transforms.PTransform; |
| import org.apache.beam.sdk.transforms.ParDo; |
| import org.apache.beam.sdk.transforms.View; |
| import org.apache.beam.sdk.values.KV; |
| import org.apache.beam.sdk.values.PCollection; |
| import org.apache.beam.sdk.values.PCollectionView; |
| import org.apache.beam.sdk.values.PCollectionViews; |
| import org.apache.beam.sdk.values.TupleTag; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableList; |
| import org.hamcrest.Matchers; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for Pipeline. */ |
| @RunWith(JUnit4.class) |
| @SuppressWarnings({ |
| "rawtypes", // TODO(https://issues.apache.org/jira/browse/BEAM-10556) |
| }) |
| public class MorePipelineTest { |
| |
| @Rule public final TestPipeline pipeline = TestPipeline.create(); |
| |
| @Test |
| public void testReplaceAllPCollectionView() { |
| pipeline.enableAbandonedNodeEnforcement(false); |
| pipeline.apply(GenerateSequence.from(0).to(100)).apply(View.asList()); |
| |
| pipeline.replaceAll( |
| ImmutableList.of( |
| PTransformOverride.of( |
| application -> application.getTransform() instanceof View.AsList, |
| new ViewAsListOverride()))); |
| pipeline.traverseTopologically( |
| new PipelineVisitor.Defaults() { |
| @Override |
| public CompositeBehavior enterCompositeTransform(Node node) { |
| if (!node.isRootNode()) { |
| assertThat( |
| node.getTransform().getClass(), not(anyOf(Matchers.equalTo(View.AsList.class)))); |
| } |
| return CompositeBehavior.ENTER_TRANSFORM; |
| } |
| }); |
| } |
| |
| static class ViewAsListOverride<T> |
| extends SingleInputOutputOverrideFactory< |
| PCollection<T>, PCollectionView<List<T>>, View.AsList<T>> { |
| @Override |
| public PTransformReplacement<PCollection<T>, PCollectionView<List<T>>> getReplacementTransform( |
| AppliedPTransform<PCollection<T>, PCollectionView<List<T>>, View.AsList<T>> transform) { |
| return PTransformReplacement.of( |
| PTransformReplacements.getSingletonMainInput(transform), |
| new FakeViewAsList<>(findPCollectionView(transform))); |
| } |
| } |
| |
| static class FakeViewAsList<T> extends PTransform<PCollection<T>, PCollectionView<List<T>>> { |
| private final PCollectionView<List<T>> originalView; |
| |
| FakeViewAsList(PCollectionView<List<T>> originalView) { |
| this.originalView = originalView; |
| } |
| |
| @Override |
| public PCollectionView<List<T>> expand(PCollection<T> input) { |
| Coder<T> inputCoder = input.getCoder(); |
| PCollection<KV<Long, PCollectionViews.ValueOrMetadata<T, OffsetRange>>> materializationInput = |
| input |
| .apply("IndexElements", ParDo.of(new View.ToListViewDoFn<>())) |
| .setCoder( |
| KvCoder.of( |
| BigEndianLongCoder.of(), |
| PCollectionViews.ValueOrMetadataCoder.create( |
| inputCoder, OffsetRange.Coder.of()))); |
| PCollectionView<List<T>> view = |
| PCollectionViews.listView( |
| materializationInput, |
| (TupleTag< |
| Materializations.MultimapView< |
| Long, PCollectionViews.ValueOrMetadata<T, OffsetRange>>>) |
| originalView.getTagInternal(), |
| (PCollectionViews.TypeDescriptorSupplier<T>) inputCoder::getEncodedTypeDescriptor, |
| materializationInput.getWindowingStrategy()); |
| materializationInput.apply(View.CreatePCollectionView.of(view)); |
| return view; |
| } |
| } |
| |
| private static <InputT, ViewT> PCollectionView<ViewT> findPCollectionView( |
| final AppliedPTransform< |
| PCollection<InputT>, |
| PCollectionView<ViewT>, |
| ? extends PTransform<PCollection<InputT>, PCollectionView<ViewT>>> |
| transform) { |
| final AtomicReference<PCollectionView<ViewT>> viewRef = new AtomicReference<>(); |
| transform |
| .getPipeline() |
| .traverseTopologically( |
| new PipelineVisitor.Defaults() { |
| // Stores whether we have entered the expected composite view transform. |
| private boolean tracking = false; |
| |
| @Override |
| public CompositeBehavior enterCompositeTransform(Node node) { |
| if (transform.getTransform() == node.getTransform()) { |
| tracking = true; |
| } |
| return super.enterCompositeTransform(node); |
| } |
| |
| @Override |
| public void visitPrimitiveTransform(Node node) { |
| if (tracking && node.getTransform() instanceof View.CreatePCollectionView) { |
| View.CreatePCollectionView createViewTransform = |
| (View.CreatePCollectionView) node.getTransform(); |
| checkState( |
| viewRef.compareAndSet(null, createViewTransform.getView()), |
| "Found more than one instance of a CreatePCollectionView when" |
| + "attempting to replace %s, found [%s, %s]", |
| transform.getTransform(), |
| viewRef.get(), |
| createViewTransform.getView()); |
| } |
| } |
| |
| @Override |
| public void leaveCompositeTransform(Node node) { |
| if (transform.getTransform() == node.getTransform()) { |
| tracking = false; |
| } |
| } |
| }); |
| checkState( |
| viewRef.get() != null, |
| "Expected to find CreatePCollectionView contained within %s", |
| transform.getTransform()); |
| return viewRef.get(); |
| } |
| } |