| /* |
| * 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.io.Serializable; |
| import java.util.Map; |
| import org.apache.beam.sdk.runners.AppliedPTransform; |
| import org.apache.beam.sdk.runners.PTransformOverrideFactory.ReplacementOutput; |
| import org.apache.beam.sdk.testing.TestPipeline; |
| import org.apache.beam.sdk.transforms.Create; |
| import org.apache.beam.sdk.transforms.MapElements; |
| import org.apache.beam.sdk.transforms.SimpleFunction; |
| import org.apache.beam.sdk.values.PCollection; |
| import org.apache.beam.sdk.values.PCollectionList; |
| import org.apache.beam.sdk.values.PValue; |
| import org.apache.beam.sdk.values.TaggedPValue; |
| import org.hamcrest.Matchers; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.ExpectedException; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link SingleInputOutputOverrideFactory}. */ |
| @RunWith(JUnit4.class) |
| public class SingleInputOutputOverrideFactoryTest implements Serializable { |
| @Rule public transient ExpectedException thrown = ExpectedException.none(); |
| |
| @Rule |
| public transient TestPipeline pipeline = |
| TestPipeline.create().enableAbandonedNodeEnforcement(false); |
| |
| private transient SingleInputOutputOverrideFactory< |
| PCollection<? extends Integer>, PCollection<Integer>, MapElements<Integer, Integer>> |
| factory = |
| new SingleInputOutputOverrideFactory< |
| PCollection<? extends Integer>, PCollection<Integer>, |
| MapElements<Integer, Integer>>() { |
| @Override |
| public PTransformReplacement<PCollection<? extends Integer>, PCollection<Integer>> |
| getReplacementTransform( |
| AppliedPTransform< |
| PCollection<? extends Integer>, PCollection<Integer>, |
| MapElements<Integer, Integer>> |
| transform) { |
| return PTransformReplacement.of( |
| PTransformReplacements.getSingletonMainInput(transform), |
| transform.getTransform()); |
| } |
| }; |
| |
| private SimpleFunction<Integer, Integer> fn = new SimpleFunction<Integer, Integer>() { |
| @Override |
| public Integer apply(Integer input) { |
| return input - 1; |
| } |
| }; |
| |
| @Test |
| public void testMapOutputs() { |
| PCollection<Integer> input = pipeline.apply(Create.of(1, 2, 3)); |
| PCollection<Integer> output = input.apply("Map", MapElements.via(fn)); |
| PCollection<Integer> reappliedOutput = input.apply("ReMap", MapElements.via(fn)); |
| Map<PValue, ReplacementOutput> replacementMap = |
| factory.mapOutputs(output.expand(), reappliedOutput); |
| assertThat( |
| replacementMap, |
| Matchers.<PValue, ReplacementOutput>hasEntry( |
| reappliedOutput, |
| ReplacementOutput.of( |
| TaggedPValue.ofExpandedValue(output), |
| TaggedPValue.ofExpandedValue(reappliedOutput)))); |
| } |
| |
| @Test |
| public void testMapOutputsMultipleOriginalOutputsFails() { |
| PCollection<Integer> input = pipeline.apply(Create.of(1, 2, 3)); |
| PCollection<Integer> output = input.apply("Map", MapElements.via(fn)); |
| PCollection<Integer> reappliedOutput = input.apply("ReMap", MapElements.via(fn)); |
| thrown.expect(IllegalArgumentException.class); |
| Map<PValue, ReplacementOutput> replacementMap = |
| factory.mapOutputs( |
| PCollectionList.of(output).and(input).and(reappliedOutput).expand(), reappliedOutput); |
| } |
| } |