| /* |
| * 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.junit.Assert.assertThat; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| import org.apache.beam.sdk.Pipeline.PipelineVisitor; |
| import org.apache.beam.sdk.io.CountingSource; |
| import org.apache.beam.sdk.io.Read; |
| import org.apache.beam.sdk.io.Read.Bounded; |
| import org.apache.beam.sdk.io.Read.Unbounded; |
| import org.apache.beam.sdk.runners.TransformHierarchy.Node; |
| import org.apache.beam.sdk.testing.TestPipeline; |
| import org.apache.beam.sdk.transforms.Flatten; |
| import org.apache.beam.sdk.transforms.PTransform; |
| import org.apache.beam.sdk.values.PCollection; |
| import org.apache.beam.sdk.values.PCollectionList; |
| import org.apache.beam.sdk.values.PValue; |
| import org.hamcrest.Matchers; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** |
| * Tests for {@link UnconsumedReads}. |
| */ |
| @RunWith(JUnit4.class) |
| public class UnconsumedReadsTest { |
| @Rule public TestPipeline pipeline = TestPipeline.create().enableAbandonedNodeEnforcement(false); |
| |
| @Test |
| public void matcherProducesUnconsumedValueBoundedRead() { |
| Bounded<Long> transform = Read.from(CountingSource.upTo(20L)); |
| PCollection<Long> output = pipeline.apply(transform); |
| UnconsumedReads.ensureAllReadsConsumed(pipeline); |
| validateConsumed(); |
| } |
| |
| @Test |
| public void matcherProducesUnconsumedValueUnboundedRead() { |
| Unbounded<Long> transform = Read.from(CountingSource.unbounded()); |
| PCollection<Long> output = pipeline.apply(transform); |
| UnconsumedReads.ensureAllReadsConsumed(pipeline); |
| validateConsumed(); |
| } |
| |
| @Test |
| public void doesNotConsumeAlreadyConsumedRead() { |
| Unbounded<Long> transform = Read.from(CountingSource.unbounded()); |
| final PCollection<Long> output = pipeline.apply(transform); |
| final Flatten.PCollections<Long> consumer = Flatten.<Long>pCollections(); |
| PCollectionList.of(output).apply(consumer); |
| UnconsumedReads.ensureAllReadsConsumed(pipeline); |
| pipeline.traverseTopologically( |
| new PipelineVisitor.Defaults() { |
| @Override |
| public void visitPrimitiveTransform(Node node) { |
| // The output should only be consumed by a single consumer |
| if (node.getInputs().values().contains(output)) { |
| assertThat(node.getTransform(), Matchers.<PTransform<?, ?>>is(consumer)); |
| } |
| } |
| }); |
| } |
| |
| private void validateConsumed() { |
| final Set<PValue> consumedOutputs = new HashSet<PValue>(); |
| final Set<PValue> allReadOutputs = new HashSet<PValue>(); |
| pipeline.traverseTopologically( |
| new PipelineVisitor.Defaults() { |
| @Override |
| public void visitPrimitiveTransform(Node node) { |
| consumedOutputs.addAll(node.getInputs().values()); |
| } |
| |
| @Override |
| public void visitValue(PValue value, Node producer) { |
| if (producer.getTransform() instanceof Read.Bounded |
| || producer.getTransform() instanceof Read.Unbounded) { |
| allReadOutputs.add(value); |
| } |
| } |
| }); |
| assertThat(consumedOutputs, Matchers.hasItems(allReadOutputs.toArray(new PValue[0]))); |
| } |
| } |