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.arrow.adapter;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.util.concurrent.TimeUnit;
  import org.apache.arrow.adapter.avro.AvroToArrow;
  import org.apache.arrow.adapter.avro.AvroToArrowConfig;
  import org.apache.arrow.adapter.avro.AvroToArrowConfigBuilder;
  import org.apache.arrow.adapter.avro.AvroToArrowVectorIterator;
  import org.apache.arrow.memory.BufferAllocator;
  import org.apache.arrow.memory.RootAllocator;
  import org.apache.arrow.vector.IntVector;
  import org.apache.arrow.vector.VectorSchemaRoot;
  import org.apache.avro.Schema;
  import org.apache.avro.generic.GenericData;
  import org.apache.avro.generic.GenericDatumWriter;
  import org.apache.avro.generic.GenericRecord;
  import org.apache.avro.io.BinaryDecoder;
  import org.apache.avro.io.BinaryEncoder;
  import org.apache.avro.io.DatumWriter;
  import org.apache.avro.io.Decoder;
  import org.apache.avro.io.DecoderFactory;
  import org.apache.avro.io.EncoderFactory;
  import org.openjdk.jmh.annotations.Benchmark;
  import org.openjdk.jmh.annotations.BenchmarkMode;
  import org.openjdk.jmh.annotations.Mode;
  import org.openjdk.jmh.annotations.OutputTimeUnit;
  import org.openjdk.jmh.annotations.Scope;
  import org.openjdk.jmh.annotations.Setup;
  import org.openjdk.jmh.annotations.State;
  import org.openjdk.jmh.annotations.TearDown;
  import org.openjdk.jmh.runner.Runner;
  import org.openjdk.jmh.runner.RunnerException;
  import org.openjdk.jmh.runner.options.Options;
  import org.openjdk.jmh.runner.options.OptionsBuilder;
  
  /** Benchmarks for avro adapter. */
  @State(Scope.Benchmark)
  public class AvroAdapterBenchmarks {
  
    private final int valueCount = 3000;
  
    private AvroToArrowConfig config;
  
    private Schema schema;
    private BinaryDecoder decoder;
  
    /** Setup benchmarks. */
    @Setup
    public void prepare() throws Exception {
      BufferAllocator allocator = new RootAllocator(Integer.MAX_VALUE);
      config = new AvroToArrowConfigBuilder(allocator).build();
  
      String schemaStr =
          "{\n"
              + " \"namespace\": \"org.apache.arrow.avro\",\n"
              + " \"type\": \"record\",\n"
              + " \"name\": \"testBenchmark\",\n"
              + " \"fields\": [\n"
              + "    {\"name\": \"f0\", \"type\": \"string\"},\n"
              + "    {\"name\": \"f1\", \"type\": \"int\"},\n"
              + "    {\"name\": \"f2\", \"type\": \"long\"},\n"
              + "    {\"name\": \"f3\", \"type\": \"boolean\"},\n"
              + "    {\"name\": \"f4\", \"type\": \"float\"}\n"
              + "  ]\n"
              + "}";
      schema = new Schema.Parser().parse(schemaStr);
  
      ByteArrayOutputStream out = new ByteArrayOutputStream();
      BinaryEncoder encoder = new EncoderFactory().directBinaryEncoder(out, null);
      DatumWriter writer = new GenericDatumWriter(schema);
  
      for (int i = 0; i < valueCount; i++) {
        GenericRecord record = new GenericData.Record(schema);
        record.put(0, "test" + i);
        record.put(1, i);
        record.put(2, i + 1L);
        record.put(3, i % 2 == 0);
        record.put(4, i + 0.1f);
        writer.write(record, encoder);
      }
  
      decoder =
          new DecoderFactory().directBinaryDecoder(new ByteArrayInputStream(out.toByteArray()), null);
    }
  
    /** Tear down benchmarks. */
    @TearDown
    public void tearDown() {
      config.getAllocator().close();
    }
  
    /**
     * Test {@link AvroToArrow#avroToArrowIterator(Schema, Decoder, AvroToArrowConfig)}.
     *
     * @return useless. To avoid DCE by JIT.
     */
    @Benchmark
    @BenchmarkMode(Mode.AverageTime)
    @OutputTimeUnit(TimeUnit.NANOSECONDS)
    public int testAvroToArrow() throws Exception {
      decoder.inputStream().reset();
      int sum = 0;
      try (AvroToArrowVectorIterator iter =
          AvroToArrow.avroToArrowIterator(schema, decoder, config)) {
        while (iter.hasNext()) {
          VectorSchemaRoot root = iter.next();
          IntVector intVector = (IntVector) root.getVector("f1");
          for (int i = 0; i < intVector.getValueCount(); i++) {
            sum += intVector.get(i);
          }
          root.close();
        }
      }
      return sum;
    }
  
    public static void main(String[] args) throws RunnerException {
      Options opt =
          new OptionsBuilder().include(AvroAdapterBenchmarks.class.getSimpleName()).forks(1).build();
  
      new Runner(opt).run();
    }
  }
  