runners/samza/src/main/java/org/apache/beam/runners/samza/translation/SamzaTransformOverrides.java

/*
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 * distributed with this work for additional information
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 * 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
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 * Unless required by applicable law or agreed to in writing, software
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 * See the License for the specific language governing permissions and
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package org.apache.beam.runners.samza.translation;

import java.util.List;
import org.apache.beam.runners.core.construction.PTransformMatchers;
import org.apache.beam.runners.core.construction.PTransformTranslation;
import org.apache.beam.runners.core.construction.SplittableParDo;
import org.apache.beam.runners.core.construction.SplittableParDoNaiveBounded;
import org.apache.beam.runners.core.construction.UnsupportedOverrideFactory;
import org.apache.beam.sdk.runners.PTransformOverride;
import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableList;

/** {@link org.apache.beam.sdk.transforms.PTransform} overrides for Samza runner. */
public class SamzaTransformOverrides {
  public static List<PTransformOverride> getDefaultOverrides() {
    return ImmutableList.<PTransformOverride>builder()
        .add(
            PTransformOverride.of(
                PTransformMatchers.urnEqualTo(PTransformTranslation.CREATE_VIEW_TRANSFORM_URN),
                new SamzaPublishViewTransformOverride()))
        .add(
            PTransformOverride.of(
                PTransformMatchers.splittableParDo(), new SplittableParDo.OverrideFactory()))
        .add(
            PTransformOverride.of(
                PTransformMatchers.splittableProcessKeyedBounded(),
                new SplittableParDoNaiveBounded.OverrideFactory()))
        // TODO: [BEAM-5362] Support @RequiresStableInput on Samza runner
        .add(
            PTransformOverride.of(
                PTransformMatchers.requiresStableInputParDoMulti(),
                UnsupportedOverrideFactory.withMessage(
                    "Samza runner currently doesn't support @RequiresStableInput annotation.")))
        .build();
  }
}