| /* |
| * 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.graph; |
| |
| import static org.apache.beam.sdk.transforms.DoFn.ProcessContinuation.resume; |
| import static org.apache.beam.sdk.transforms.DoFn.ProcessContinuation.stop; |
| import static org.junit.Assert.assertEquals; |
| |
| import org.apache.beam.model.pipeline.v1.RunnerApi; |
| import org.apache.beam.model.pipeline.v1.RunnerApi.FunctionSpec; |
| import org.apache.beam.runners.core.construction.PTransformTranslation; |
| import org.apache.beam.runners.core.construction.PipelineTranslation; |
| import org.apache.beam.sdk.Pipeline; |
| import org.apache.beam.sdk.io.range.OffsetRange; |
| import org.apache.beam.sdk.transforms.Create; |
| import org.apache.beam.sdk.transforms.DoFn; |
| import org.apache.beam.sdk.transforms.DoFn.UnboundedPerElement; |
| import org.apache.beam.sdk.transforms.ParDo; |
| import org.apache.beam.sdk.transforms.splittabledofn.RestrictionTracker; |
| import org.apache.beam.sdk.values.KV; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Iterables; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Maps; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| @RunWith(JUnit4.class) |
| public class SplittableParDoExpanderTest { |
| |
| @UnboundedPerElement |
| static class PairStringWithIndexToLengthBase extends DoFn<String, KV<String, Integer>> { |
| @ProcessElement |
| public ProcessContinuation process( |
| ProcessContext c, RestrictionTracker<OffsetRange, Long> tracker) { |
| for (long i = tracker.currentRestriction().getFrom(), numIterations = 0; |
| tracker.tryClaim(i); |
| ++i, ++numIterations) { |
| c.output(KV.of(c.element(), (int) i)); |
| if (numIterations % 3 == 0) { |
| return resume(); |
| } |
| } |
| return stop(); |
| } |
| |
| @GetInitialRestriction |
| public OffsetRange getInitialRange(String element) { |
| return new OffsetRange(0, element.length()); |
| } |
| |
| @SplitRestriction |
| public void splitRange( |
| String element, OffsetRange range, OutputReceiver<OffsetRange> receiver) { |
| receiver.output(new OffsetRange(range.getFrom(), (range.getFrom() + range.getTo()) / 2)); |
| receiver.output(new OffsetRange((range.getFrom() + range.getTo()) / 2, range.getTo())); |
| } |
| } |
| |
| @Test |
| public void testSizedReplacement() { |
| Pipeline p = Pipeline.create(); |
| p.apply(Create.of("1", "2", "3")) |
| .apply("TestSDF", ParDo.of(new PairStringWithIndexToLengthBase())); |
| |
| RunnerApi.Pipeline proto = PipelineTranslation.toProto(p); |
| String transformName = |
| Iterables.getOnlyElement( |
| Maps.filterValues( |
| proto.getComponents().getTransformsMap(), |
| (RunnerApi.PTransform transform) -> |
| transform |
| .getUniqueName() |
| .contains(PairStringWithIndexToLengthBase.class.getSimpleName())) |
| .keySet()); |
| |
| RunnerApi.Pipeline updatedProto = |
| ProtoOverrides.updateTransform( |
| PTransformTranslation.PAR_DO_TRANSFORM_URN, |
| proto, |
| SplittableParDoExpander.createSizedReplacement()); |
| RunnerApi.PTransform newComposite = |
| updatedProto.getComponents().getTransformsOrThrow(transformName); |
| assertEquals(FunctionSpec.getDefaultInstance(), newComposite.getSpec()); |
| assertEquals(3, newComposite.getSubtransformsCount()); |
| assertEquals( |
| PTransformTranslation.SPLITTABLE_PAIR_WITH_RESTRICTION_URN, |
| updatedProto |
| .getComponents() |
| .getTransformsOrThrow(newComposite.getSubtransforms(0)) |
| .getSpec() |
| .getUrn()); |
| assertEquals( |
| PTransformTranslation.SPLITTABLE_SPLIT_AND_SIZE_RESTRICTIONS_URN, |
| updatedProto |
| .getComponents() |
| .getTransformsOrThrow(newComposite.getSubtransforms(1)) |
| .getSpec() |
| .getUrn()); |
| assertEquals( |
| PTransformTranslation.SPLITTABLE_PROCESS_SIZED_ELEMENTS_AND_RESTRICTIONS_URN, |
| updatedProto |
| .getComponents() |
| .getTransformsOrThrow(newComposite.getSubtransforms(2)) |
| .getSpec() |
| .getUrn()); |
| } |
| } |