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.kafka.jmh.record;
  
  import org.apache.kafka.common.compress.Compression;
  import org.apache.kafka.common.record.CompressionType;
  import org.apache.kafka.common.record.MemoryRecords;
  import org.apache.kafka.common.record.MutableRecordBatch;
  import org.apache.kafka.common.record.Record;
  import org.apache.kafka.common.record.RecordBatch;
  import org.apache.kafka.common.utils.CloseableIterator;
  
  import org.openjdk.jmh.annotations.Benchmark;
  import org.openjdk.jmh.annotations.Fork;
  import org.openjdk.jmh.annotations.Measurement;
  import org.openjdk.jmh.annotations.OperationsPerInvocation;
  import org.openjdk.jmh.annotations.Param;
  import org.openjdk.jmh.annotations.Scope;
  import org.openjdk.jmh.annotations.State;
  import org.openjdk.jmh.annotations.Warmup;
  import org.openjdk.jmh.infra.Blackhole;
  
  @State(Scope.Benchmark)
  @Fork(value = 1)
  @Warmup(iterations = 5)
  @Measurement(iterations = 15)
  public class RecordBatchIterationBenchmark extends BaseRecordBatchBenchmark {
  
      @Param(value = {"LZ4", "SNAPPY", "GZIP", "ZSTD", "NONE"})
      private CompressionType compressionType = CompressionType.NONE;
  
      @Override
      Compression compression() {
          return Compression.of(compressionType).build();
      }
  
      @Benchmark
      public void measureIteratorForBatchWithSingleMessage(Blackhole bh) {
          for (RecordBatch batch : MemoryRecords.readableRecords(singleBatchBuffer.duplicate()).batches()) {
              try (CloseableIterator<Record> iterator = batch.streamingIterator(requestLocal.bufferSupplier())) {
                  while (iterator.hasNext())
                      bh.consume(iterator.next());
              }
          }
      }
  
      @OperationsPerInvocation(value = batchCount)
      @Fork(jvmArgsAppend = "-Xmx8g")
      @Benchmark
      public void measureStreamingIteratorForVariableBatchSize(Blackhole bh) {
          for (int i = 0; i < batchCount; ++i) {
              for (RecordBatch batch : MemoryRecords.readableRecords(batchBuffers[i].duplicate()).batches()) {
                  try (CloseableIterator<Record> iterator = batch.streamingIterator(requestLocal.bufferSupplier())) {
                      while (iterator.hasNext())
                          bh.consume(iterator.next());
                  }
              }
          }
      }
  
      @OperationsPerInvocation(value = batchCount)
      @Fork(jvmArgsAppend = "-Xmx8g")
      @Benchmark
      public void measureSkipIteratorForVariableBatchSize(Blackhole bh) {
          for (int i = 0; i < batchCount; ++i) {
              for (MutableRecordBatch batch : MemoryRecords.readableRecords(batchBuffers[i].duplicate()).batches()) {
                  try (CloseableIterator<Record> iterator = batch.skipKeyValueIterator(requestLocal.bufferSupplier())) {
                      while (iterator.hasNext())
                          bh.consume(iterator.next());
                  }
              }
          }
      }
  }
  