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.storage;
  
  import org.apache.kafka.common.TopicPartition;
  import org.apache.kafka.common.utils.MockTime;
  import org.apache.kafka.common.utils.Time;
  import org.apache.kafka.storage.internals.log.ProducerStateEntry;
  import org.apache.kafka.storage.internals.log.ProducerStateManager;
  import org.apache.kafka.storage.internals.log.ProducerStateManagerConfig;
  
  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.TearDown;
  import org.openjdk.jmh.annotations.Threads;
  import org.openjdk.jmh.annotations.Warmup;
  
  import java.io.IOException;
  import java.nio.file.Files;
  import java.nio.file.Path;
  import java.util.Optional;
  import java.util.OptionalLong;
  import java.util.concurrent.TimeUnit;
  
  @Warmup(iterations = 2)
  @Measurement(iterations = 3)
  @Fork(1)
  @BenchmarkMode(Mode.AverageTime)
  @State(value = Scope.Benchmark)
  @OutputTimeUnit(TimeUnit.MICROSECONDS)
  public class ProducerStateManagerBench {
      Time time = new MockTime();
      final int producerIdExpirationMs = 1000;
  
      ProducerStateManager manager;
      Path tempDirectory;
  
      @Param({"10000", "100000", "1000000"})
      public int numProducerIds;
  
      @Setup(Level.Invocation)
      public void setup() throws IOException {
          tempDirectory = Files.createTempDirectory("kafka-logs");
          manager = new ProducerStateManager(
              new TopicPartition("t1", 0),
              tempDirectory.toFile(),
              Integer.MAX_VALUE,
              new ProducerStateManagerConfig(producerIdExpirationMs, false),
              time
          );
          short epoch = 0;
          for (long i = 0L; i < numProducerIds; i++) {
              final ProducerStateEntry entry = new ProducerStateEntry(
                  i,
                  epoch,
                  0,
                  time.milliseconds(),
                  OptionalLong.empty(),
                  Optional.empty()
              );
              manager.loadProducerEntry(entry);
          }
      }
  
  
      @TearDown(Level.Invocation)
      public void tearDown() throws Exception {
          Files.deleteIfExists(tempDirectory);
      }
  
      @Benchmark
      @Threads(1)
      public void testDeleteExpiringIds() {
          manager.removeExpiredProducers(time.milliseconds() + producerIdExpirationMs + 1);
      }
  }
  