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.common;
  
  import org.apache.kafka.common.IsolationLevel;
  import org.apache.kafka.common.TopicPartition;
  import org.apache.kafka.common.message.ListOffsetsRequestData;
  import org.apache.kafka.common.protocol.ApiKeys;
  import org.apache.kafka.common.requests.ListOffsetsRequest;
  import org.apache.kafka.network.RequestConvertToJson;
  
  import org.openjdk.jmh.annotations.Benchmark;
  import org.openjdk.jmh.annotations.BenchmarkMode;
  import org.openjdk.jmh.annotations.Fork;
  import org.openjdk.jmh.annotations.Level;
  import org.openjdk.jmh.annotations.Measurement;
  import org.openjdk.jmh.annotations.Mode;
  import org.openjdk.jmh.annotations.OutputTimeUnit;
  import org.openjdk.jmh.annotations.Param;
  import org.openjdk.jmh.annotations.Scope;
  import org.openjdk.jmh.annotations.Setup;
  import org.openjdk.jmh.annotations.State;
  import org.openjdk.jmh.annotations.Warmup;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.UUID;
  import java.util.concurrent.TimeUnit;
  
  @State(Scope.Benchmark)
  @Fork(value = 1)
  @Warmup(iterations = 5)
  @Measurement(iterations = 15)
  @BenchmarkMode(Mode.AverageTime)
  @OutputTimeUnit(TimeUnit.NANOSECONDS)
  public class ListOffsetRequestBenchmark {
      @Param({"10", "500", "1000"})
      private int topicCount;
  
      @Param({"3", "10", "20"})
      private int partitionCount;
  
      Map<TopicPartition, ListOffsetsRequestData.ListOffsetsPartition> offsetData;
  
      ListOffsetsRequest offsetRequest;
  
      @Setup(Level.Trial)
      public void setup() {
          this.offsetData = new HashMap<>();
          for (int topicIdx = 0; topicIdx < topicCount; topicIdx++) {
              String topic = UUID.randomUUID().toString();
              for (int partitionId = 0; partitionId < partitionCount; partitionId++) {
                  ListOffsetsRequestData.ListOffsetsPartition data = new ListOffsetsRequestData.ListOffsetsPartition();
                  this.offsetData.put(new TopicPartition(topic, partitionId), data);
              }
          }
  
          this.offsetRequest = ListOffsetsRequest.Builder.forConsumer(false, IsolationLevel.READ_UNCOMMITTED)
                  .build(ApiKeys.LIST_OFFSETS.latestVersion());
      }
  
      @Benchmark
      public String testRequestToJson() {
          return RequestConvertToJson.request(offsetRequest).toString();
      }
  }
  