content: /*
   * 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.direct;
  
  import com.google.auto.value.AutoValue;
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.EnumSet;
  import java.util.List;
  import java.util.Set;
  import org.apache.beam.runners.core.InMemoryBundleFinalizer;
  import org.apache.beam.runners.core.InMemoryBundleFinalizer.Finalization;
  import org.apache.beam.runners.core.metrics.MetricUpdates;
  import org.apache.beam.runners.direct.CommittedResult.OutputType;
  import org.apache.beam.runners.direct.WatermarkManager.TimerUpdate;
  import org.apache.beam.sdk.runners.AppliedPTransform;
  import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
  import org.apache.beam.sdk.values.WindowedValue;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.ImmutableList;
  import org.joda.time.Instant;
  
  /** An immutable {@link TransformResult}. */
  @AutoValue
  @AutoValue.CopyAnnotations
  @SuppressWarnings({
    "rawtypes", // TODO(https://github.com/apache/beam/issues/20447)
    "nullness" // TODO(https://github.com/apache/beam/issues/20497)
  })
  abstract class StepTransformResult<InputT> implements TransformResult<InputT> {
  
    public static <InputT> Builder<InputT> withHold(
        AppliedPTransform<?, ?, ?> transform, Instant watermarkHold) {
      return new Builder(transform, watermarkHold);
    }
  
    public static <InputT> Builder<InputT> withoutHold(AppliedPTransform<?, ?, ?> transform) {
      return new Builder(transform, BoundedWindow.TIMESTAMP_MAX_VALUE);
    }
  
    @Override
    public TransformResult<InputT> withLogicalMetricUpdates(MetricUpdates metricUpdates) {
      return new AutoValue_StepTransformResult(
          getTransform(),
          getOutputBundles(),
          getUnprocessedElements(),
          metricUpdates,
          getWatermarkHold(),
          getState(),
          getTimerUpdate(),
          getOutputTypes(),
          getBundleFinalizations());
    }
  
    /** A builder for creating instances of {@link StepTransformResult}. */
    public static class Builder<InputT> {
      private final AppliedPTransform<?, ?, ?> transform;
      private final ImmutableList.Builder<UncommittedBundle<?>> bundlesBuilder;
      private final ImmutableList.Builder<WindowedValue<InputT>> unprocessedElementsBuilder;
      private MetricUpdates metricUpdates;
      private CopyOnAccessInMemoryStateInternals state;
      private TimerUpdate timerUpdate;
      private List<Finalization> finalizations;
      private final Set<OutputType> producedOutputs;
      private final Instant watermarkHold;
  
      private Builder(AppliedPTransform<?, ?, ?> transform, Instant watermarkHold) {
        this.transform = transform;
        this.watermarkHold = watermarkHold;
        this.bundlesBuilder = ImmutableList.builder();
        this.producedOutputs = EnumSet.noneOf(OutputType.class);
        this.unprocessedElementsBuilder = ImmutableList.builder();
        this.timerUpdate = TimerUpdate.builder(null).build();
        this.metricUpdates = MetricUpdates.EMPTY;
        this.finalizations = Collections.EMPTY_LIST;
      }
  
      public StepTransformResult<InputT> build() {
        return new AutoValue_StepTransformResult<>(
            transform,
            bundlesBuilder.build(),
            unprocessedElementsBuilder.build(),
            metricUpdates,
            watermarkHold,
            state,
            timerUpdate,
            producedOutputs,
            finalizations);
      }
  
      public Builder<InputT> withMetricUpdates(MetricUpdates metricUpdates) {
        this.metricUpdates = metricUpdates;
        return this;
      }
  
      public Builder<InputT> withState(CopyOnAccessInMemoryStateInternals state) {
        this.state = state;
        return this;
      }
  
      public Builder<InputT> withTimerUpdate(TimerUpdate timerUpdate) {
        this.timerUpdate = timerUpdate;
        return this;
      }
  
      public Builder<InputT> addUnprocessedElements(WindowedValue<InputT>... unprocessed) {
        unprocessedElementsBuilder.addAll(Arrays.asList(unprocessed));
        return this;
      }
  
      public Builder<InputT> withBundleFinalizations(
          List<InMemoryBundleFinalizer.Finalization> finalizations) {
        this.finalizations = finalizations;
        return this;
      }
  
      public Builder<InputT> addUnprocessedElements(
          Iterable<? extends WindowedValue<InputT>> unprocessed) {
        unprocessedElementsBuilder.addAll(unprocessed);
        return this;
      }
  
      public Builder<InputT> addOutput(
          UncommittedBundle<?> outputBundle, UncommittedBundle<?>... outputBundles) {
        bundlesBuilder.add(outputBundle);
        bundlesBuilder.add(outputBundles);
        return this;
      }
  
      public Builder<InputT> addOutput(Collection<UncommittedBundle<?>> outputBundles) {
        bundlesBuilder.addAll(outputBundles);
        return this;
      }
  
      public Builder<InputT> withAdditionalOutput(OutputType producedAdditionalOutput) {
        producedOutputs.add(producedAdditionalOutput);
        return this;
      }
    }
  }
  