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
   *
   *     https://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.avro.perf.test.generic;
  
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.util.Random;
  
  import org.apache.avro.Schema;
  import org.apache.avro.generic.GenericData;
  import org.apache.avro.generic.GenericDatumReader;
  import org.apache.avro.generic.GenericDatumWriter;
  import org.apache.avro.generic.GenericRecord;
  import org.apache.avro.io.Decoder;
  import org.apache.avro.io.Encoder;
  import org.apache.avro.perf.test.BasicState;
  import org.openjdk.jmh.annotations.Benchmark;
  import org.openjdk.jmh.annotations.Level;
  import org.openjdk.jmh.annotations.OperationsPerInvocation;
  import org.openjdk.jmh.annotations.Scope;
  import org.openjdk.jmh.annotations.Setup;
  import org.openjdk.jmh.annotations.State;
  import org.openjdk.jmh.infra.Blackhole;
  
  public class GenericWithPromotionTest {
  
    private static final String RECORD_SCHEMA = "{ \"type\": \"record\", \"name\": \"R\", \"fields\": [\n"
        + "{ \"name\": \"f1\", \"type\": \"double\" },\n" + "{ \"name\": \"f2\", \"type\": \"double\" },\n"
        + "{ \"name\": \"f3\", \"type\": \"double\" },\n" + "{ \"name\": \"f4\", \"type\": \"int\" },\n"
        + "{ \"name\": \"f5\", \"type\": \"int\" },\n" + "{ \"name\": \"f6\", \"type\": \"int\" }\n" + "] }";
  
    private static final String RECORD_SCHEMA_WITH_PROMOTION = "{ \"type\": \"record\", \"name\": \"R\", \"fields\": [\n"
        + "{ \"name\": \"f1\", \"type\": \"double\" },\n" + "{ \"name\": \"f2\", \"type\": \"double\" },\n"
        + "{ \"name\": \"f3\", \"type\": \"double\" },\n" + "{ \"name\": \"f4\", \"type\": \"long\" },\n"
        + "{ \"name\": \"f5\", \"type\": \"long\" },\n" + "{ \"name\": \"f6\", \"type\": \"long\" }\n" + "] }";
  
    @Benchmark
    @OperationsPerInvocation(BasicState.BATCH_SIZE)
    public void decode(final Blackhole blackhole, final TestStateDecode state) throws Exception {
      final Decoder d = state.decoder;
      final GenericDatumReader<Object> reader = new GenericDatumReader<>(state.writerSchema, state.readerSchema);
      for (int i = 0; i < state.getBatchSize(); i++) {
        blackhole.consume(reader.read(null, d));
      }
    }
  
    @State(Scope.Thread)
    public static class TestStateDecode extends BasicState {
  
      private final Schema readerSchema;
      private final Schema writerSchema;
  
      private byte[] testData;
      private Decoder decoder;
  
      public TestStateDecode() {
        super();
        this.readerSchema = new Schema.Parser().parse(RECORD_SCHEMA_WITH_PROMOTION);
        this.writerSchema = new Schema.Parser().parse(RECORD_SCHEMA);
      }
  
      /**
       * Generate test data.
       *
       * @throws IOException Could not setup test data
       */
      @Setup(Level.Trial)
      public void doSetupTrial() throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        Encoder encoder = super.newEncoder(true, baos);
  
        final GenericDatumWriter<Object> writer = new GenericDatumWriter<>(this.writerSchema);
  
        final Random r = super.getRandom();
        for (int i = 0; i < getBatchSize(); i++) {
          final GenericRecord rec = new GenericData.Record(writerSchema);
          rec.put(0, r.nextDouble());
          rec.put(1, r.nextDouble());
          rec.put(2, r.nextDouble());
          rec.put(3, r.nextInt());
          rec.put(4, r.nextInt());
          rec.put(5, r.nextInt());
          writer.write(rec, encoder);
        }
  
        encoder.flush();
  
        this.testData = baos.toByteArray();
      }
  
      @Setup(Level.Invocation)
      public void doSetupInvocation() throws Exception {
        this.decoder = super.newDecoder(this.testData);
      }
    }
  }
  