/*
* 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.dataflow;
import static org.hamcrest.Matchers.containsInAnyOrder;
import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.assertThat;
import com.google.common.collect.Iterables;
import java.io.Serializable;
import java.util.List;
import org.apache.beam.runners.dataflow.PrimitiveParDoSingleFactory.ParDoSingle;
import org.apache.beam.sdk.coders.VarIntCoder;
import org.apache.beam.sdk.runners.AppliedPTransform;
import org.apache.beam.sdk.runners.PTransformOverrideFactory.PTransformReplacement;
import org.apache.beam.sdk.testing.TestPipeline;
import org.apache.beam.sdk.transforms.Create;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.ParDo;
import org.apache.beam.sdk.transforms.Sum;
import org.apache.beam.sdk.transforms.View;
import org.apache.beam.sdk.transforms.display.DisplayData;
import org.apache.beam.sdk.transforms.display.DisplayDataEvaluator;
import org.apache.beam.sdk.values.PCollection;
import org.apache.beam.sdk.values.PCollectionView;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Tests for {@link PrimitiveParDoSingleFactory}.
*/
@RunWith(JUnit4.class)
public class PrimitiveParDoSingleFactoryTest implements Serializable {
// Create a pipeline for testing Side Input propagation. This won't actually run any Pipelines,
// so disable enforcement.
@Rule
public transient TestPipeline pipeline =
TestPipeline.create().enableAbandonedNodeEnforcement(false);
private PrimitiveParDoSingleFactory<Integer, Long> factory = new PrimitiveParDoSingleFactory<>();
/**
* A test that demonstrates that the replacement transform has the Display Data of the
* {@link ParDo.SingleOutput} it replaces.
*/
@Test
public void getReplacementTransformPopulateDisplayData() {
ParDo.SingleOutput<Integer, Long> originalTransform = ParDo.of(new ToLongFn());
DisplayData originalDisplayData = DisplayData.from(originalTransform);
PCollection<? extends Integer> input = pipeline.apply(Create.of(1, 2, 3));
AppliedPTransform<
PCollection<? extends Integer>, PCollection<Long>, ParDo.SingleOutput<Integer, Long>>
application =
AppliedPTransform.of(
"original",
input.expand(),
input.apply(originalTransform).expand(),
originalTransform,
pipeline);
PTransformReplacement<PCollection<? extends Integer>, PCollection<Long>> replacement =
factory.getReplacementTransform(application);
DisplayData replacementDisplayData = DisplayData.from(replacement.getTransform());
assertThat(replacementDisplayData, equalTo(originalDisplayData));
DisplayData primitiveDisplayData =
Iterables.getOnlyElement(
DisplayDataEvaluator.create()
.displayDataForPrimitiveTransforms(replacement.getTransform(), VarIntCoder.of()));
assertThat(primitiveDisplayData, equalTo(replacementDisplayData));
}
@Test
public void getReplacementTransformGetSideInputs() {
PCollectionView<Long> sideLong =
pipeline
.apply("LongSideInputVals", Create.of(-1L, -2L, -4L))
.apply("SideLongView", Sum.longsGlobally().asSingletonView());
PCollectionView<List<String>> sideStrings =
pipeline
.apply("StringSideInputVals", Create.of("foo", "bar", "baz"))
.apply("SideStringsView", View.<String>asList());
ParDo.SingleOutput<Integer, Long> originalTransform =
ParDo.of(new ToLongFn()).withSideInputs(sideLong, sideStrings);
PCollection<? extends Integer> input = pipeline.apply(Create.of(1, 2, 3));
AppliedPTransform<
PCollection<? extends Integer>, PCollection<Long>, ParDo.SingleOutput<Integer, Long>>
application =
AppliedPTransform.of(
"original",
input.expand(),
input.apply(originalTransform).expand(),
originalTransform,
pipeline);
PTransformReplacement<PCollection<? extends Integer>, PCollection<Long>> replacementTransform =
factory.getReplacementTransform(application);
ParDoSingle<Integer, Long> parDoSingle =
(ParDoSingle<Integer, Long>) replacementTransform.getTransform();
assertThat(parDoSingle.getSideInputs(), containsInAnyOrder(sideStrings, sideLong));
}
@Test
public void getReplacementTransformGetFn() {
DoFn<Integer, Long> originalFn = new ToLongFn();
ParDo.SingleOutput<Integer, Long> originalTransform = ParDo.of(originalFn);
PCollection<? extends Integer> input = pipeline.apply(Create.of(1, 2, 3));
AppliedPTransform<
PCollection<? extends Integer>, PCollection<Long>, ParDo.SingleOutput<Integer, Long>>
application =
AppliedPTransform.of(
"original",
input.expand(),
input.apply(originalTransform).expand(),
originalTransform,
pipeline);
PTransformReplacement<PCollection<? extends Integer>, PCollection<Long>> replacementTransform =
factory.getReplacementTransform(application);
ParDoSingle<Integer, Long> parDoSingle =
(ParDoSingle<Integer, Long>) replacementTransform.getTransform();
assertThat(parDoSingle.getFn(), equalTo(originalTransform.getFn()));
assertThat(parDoSingle.getFn(), equalTo(originalFn));
}
private static class ToLongFn extends DoFn<Integer, Long> {
@ProcessElement
public void toLong(ProcessContext ctxt) {
ctxt.output(ctxt.element().longValue());
}
public boolean equals(Object other) {
return other != null && other.getClass().equals(getClass());
}
public int hashCode() {
return getClass().hashCode();
}
}
}