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.sdk.util.construction;
  
  import static org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Preconditions.checkArgument;
  
  import com.google.auto.service.AutoService;
  import java.io.IOException;
  import java.util.Collections;
  import java.util.Map;
  import org.apache.beam.model.pipeline.v1.RunnerApi;
  import org.apache.beam.model.pipeline.v1.RunnerApi.FunctionSpec;
  import org.apache.beam.sdk.runners.AppliedPTransform;
  import org.apache.beam.sdk.transforms.PTransform;
  import org.apache.beam.sdk.transforms.ParDo;
  import org.apache.beam.sdk.transforms.View;
  import org.apache.beam.sdk.transforms.View.CreatePCollectionView;
  import org.apache.beam.sdk.util.SerializableUtils;
  import org.apache.beam.sdk.util.construction.PTransformTranslation.TransformPayloadTranslator;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.sdk.values.PCollectionView;
  import org.apache.beam.vendor.grpc.v1p69p0.com.google.protobuf.ByteString;
  
  /**
   * Utility methods for translating a {@link View} transforms to and from {@link RunnerApi}
   * representations.
   *
   * @deprecated this should generally be done as part of {@link ParDo} translation, or moved into a
   *     dedicated runners-core-construction auxiliary class
   */
  @Deprecated
  @SuppressWarnings({
    "nullness", // TODO(https://github.com/apache/beam/issues/20497)
    "rawtypes" // TODO(https://github.com/apache/beam/issues/20447)
  })
  public class CreatePCollectionViewTranslation {
  
    /**
     * @deprecated Since {@link CreatePCollectionView} is not a part of the Beam model, there is no
     *     SDK-agnostic specification. Using this method means your runner is tied to Java.
     */
    @Deprecated
    public static <ElemT, ViewT> PCollectionView<ViewT> getView(
        AppliedPTransform<
                PCollection<ElemT>,
                PCollection<ElemT>,
                PTransform<PCollection<ElemT>, PCollection<ElemT>>>
            application)
        throws IOException {
  
      RunnerApi.PTransform transformProto =
          PTransformTranslation.toProto(
              application,
              Collections.emptyList(),
              SdkComponents.create(application.getPipeline().getOptions()));
  
      checkArgument(
          PTransformTranslation.CREATE_VIEW_TRANSFORM_URN.equals(transformProto.getSpec().getUrn()),
          "Illegal attempt to extract %s from transform %s with name \"%s\" and URN \"%s\"",
          PCollectionView.class.getSimpleName(),
          application.getTransform(),
          application.getFullName(),
          transformProto.getSpec().getUrn());
  
      return (PCollectionView<ViewT>)
          SerializableUtils.deserializeFromByteArray(
              transformProto.getSpec().getPayload().toByteArray(),
              PCollectionView.class.getSimpleName());
    }
  
    /**
     * @deprecated runners should move away from translating `CreatePCollectionView` and treat this as
     *     part of the translation for a `ParDo` side input.
     */
    @Deprecated
    static class CreatePCollectionViewTranslator
        implements TransformPayloadTranslator<View.CreatePCollectionView<?, ?>> {
      @Override
      public String getUrn() {
        return PTransformTranslation.CREATE_VIEW_TRANSFORM_URN;
      }
  
      @Override
      public FunctionSpec translate(
          AppliedPTransform<?, ?, View.CreatePCollectionView<?, ?>> transform,
          SdkComponents components) {
        return FunctionSpec.newBuilder()
            .setUrn(getUrn(transform.getTransform()))
            .setPayload(
                ByteString.copyFrom(
                    SerializableUtils.serializeToByteArray(transform.getTransform().getView())))
            .build();
      }
    }
  
    /**
     * Registers {@link CreatePCollectionViewTranslator}.
     *
     * @deprecated runners should move away from translating `CreatePCollectionView` and treat this as
     *     part of the translation for a `ParDo` side input.
     */
    @AutoService(TransformPayloadTranslatorRegistrar.class)
    @Deprecated
    public static class Registrar implements TransformPayloadTranslatorRegistrar {
      @Override
      public Map<? extends Class<? extends PTransform>, ? extends TransformPayloadTranslator>
          getTransformPayloadTranslators() {
        return Collections.singletonMap(
            View.CreatePCollectionView.class, new CreatePCollectionViewTranslator());
      }
    }
  }
  