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.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.equalTo;
  import static org.hamcrest.Matchers.instanceOf;
  import static org.junit.Assume.assumeThat;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.util.List;
  import org.apache.beam.model.pipeline.v1.RunnerApi;
  import org.apache.beam.model.pipeline.v1.RunnerApi.ReadPayload;
  import org.apache.beam.sdk.coders.AtomicCoder;
  import org.apache.beam.sdk.coders.ByteArrayCoder;
  import org.apache.beam.sdk.coders.Coder;
  import org.apache.beam.sdk.coders.CoderException;
  import org.apache.beam.sdk.coders.StringUtf8Coder;
  import org.apache.beam.sdk.io.BoundedSource;
  import org.apache.beam.sdk.io.CountingSource;
  import org.apache.beam.sdk.io.Read;
  import org.apache.beam.sdk.io.Source;
  import org.apache.beam.sdk.io.UnboundedSource;
  import org.apache.beam.sdk.io.UnboundedSource.CheckpointMark;
  import org.apache.beam.sdk.options.PipelineOptions;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.ImmutableList;
  import org.checkerframework.checker.nullness.qual.Nullable;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.Parameterized;
  import org.junit.runners.Parameterized.Parameter;
  import org.junit.runners.Parameterized.Parameters;
  
  /** Tests for {@link ReadTranslation}. */
  @RunWith(Parameterized.class)
  public class ReadTranslationTest {
  
    @Parameters(name = "{index}: {0}")
    public static Iterable<Source<?>> data() {
      return ImmutableList.of(
          CountingSource.unbounded(),
          CountingSource.upTo(100L),
          new TestBoundedSource(),
          new TestUnboundedSource());
    }
  
    @Parameter(0)
    public Source<?> source;
  
    @Test
    public void testToFromProtoBounded() throws Exception {
      // TODO: Split into two tests.
      assumeThat(source, instanceOf(BoundedSource.class));
      BoundedSource<?> boundedSource = (BoundedSource<?>) this.source;
      SplittableParDo.PrimitiveBoundedRead<?> boundedRead =
          new SplittableParDo.PrimitiveBoundedRead<>(Read.from(boundedSource));
      ReadPayload payload = ReadTranslation.toProto(boundedRead);
      assertThat(payload.getIsBounded(), equalTo(RunnerApi.IsBounded.Enum.BOUNDED));
      BoundedSource<?> deserializedSource = ReadTranslation.boundedSourceFromProto(payload);
      assertThat(deserializedSource, equalTo(source));
    }
  
    @Test
    public void testToFromProtoUnbounded() throws Exception {
      assumeThat(source, instanceOf(UnboundedSource.class));
      UnboundedSource<?, ?> unboundedSource = (UnboundedSource<?, ?>) this.source;
      SplittableParDo.PrimitiveUnboundedRead<?> unboundedRead =
          new SplittableParDo.PrimitiveUnboundedRead<>(Read.from(unboundedSource));
      // No environment set for unbounded sources
      ReadPayload payload = ReadTranslation.toProto(unboundedRead);
      assertThat(payload.getIsBounded(), equalTo(RunnerApi.IsBounded.Enum.UNBOUNDED));
      UnboundedSource<?, ?> deserializedSource = ReadTranslation.unboundedSourceFromProto(payload);
      assertThat(deserializedSource, equalTo(source));
    }
  
    private static class TestBoundedSource extends BoundedSource<String> {
      @Override
      public List<? extends BoundedSource<String>> split(
          long desiredBundleSizeBytes, PipelineOptions options) throws Exception {
        throw new UnsupportedOperationException();
      }
  
      @Override
      public long getEstimatedSizeBytes(PipelineOptions options) throws Exception {
        throw new UnsupportedOperationException();
      }
  
      @Override
      public BoundedReader<String> createReader(PipelineOptions options) throws IOException {
        throw new UnsupportedOperationException();
      }
  
      @Override
      public Coder<String> getOutputCoder() {
        return StringUtf8Coder.of();
      }
  
      @Override
      public boolean equals(@Nullable Object other) {
        return other != null && other.getClass().equals(TestBoundedSource.class);
      }
  
      @Override
      public int hashCode() {
        return TestBoundedSource.class.hashCode();
      }
    }
  
    private static class TestUnboundedSource extends UnboundedSource<byte[], CheckpointMark> {
      @Override
      public Coder<byte[]> getOutputCoder() {
        return ByteArrayCoder.of();
      }
  
      @Override
      public List<? extends UnboundedSource<byte[], CheckpointMark>> split(
          int desiredNumSplits, PipelineOptions options) throws Exception {
        throw new UnsupportedOperationException();
      }
  
      @Override
      public UnboundedReader<byte[]> createReader(
          PipelineOptions options, @Nullable CheckpointMark checkpointMark) throws IOException {
        throw new UnsupportedOperationException();
      }
  
      @Override
      public Coder<CheckpointMark> getCheckpointMarkCoder() {
        return new TestCheckpointMarkCoder();
      }
  
      @Override
      public boolean equals(@Nullable Object other) {
        return other != null && other.getClass().equals(TestUnboundedSource.class);
      }
  
      @Override
      public int hashCode() {
        return TestUnboundedSource.class.hashCode();
      }
  
      private static class TestCheckpointMarkCoder extends AtomicCoder<CheckpointMark> {
        @Override
        public void encode(CheckpointMark value, OutputStream outStream)
            throws CoderException, IOException {
          throw new UnsupportedOperationException();
        }
  
        @Override
        public CheckpointMark decode(InputStream inStream) throws CoderException, IOException {
          throw new UnsupportedOperationException();
        }
      }
    }
  }
  