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.bifromq.basekv.localengine.benchmark;
  
  
  import static org.apache.bifromq.basekv.localengine.TestUtil.toByteString;
  
  import java.util.concurrent.ThreadLocalRandom;
  import java.util.concurrent.TimeUnit;
  import lombok.SneakyThrows;
  import lombok.extern.slf4j.Slf4j;
  import org.openjdk.jmh.annotations.Benchmark;
  import org.openjdk.jmh.annotations.BenchmarkMode;
  import org.openjdk.jmh.annotations.Measurement;
  import org.openjdk.jmh.annotations.Mode;
  import org.openjdk.jmh.annotations.OutputTimeUnit;
  import org.openjdk.jmh.annotations.Warmup;
  import org.openjdk.jmh.infra.Blackhole;
  import org.openjdk.jmh.runner.Runner;
  import org.openjdk.jmh.runner.options.Options;
  import org.openjdk.jmh.runner.options.OptionsBuilder;
  
  @Slf4j
  public class ContinuousKeySingleDeleteAndSeek {
      @SneakyThrows
      public static void main(String[] args) {
          Options opt = new OptionsBuilder()
              .include(ContinuousKeySingleDeleteAndSeek.class.getSimpleName())
              .build();
          new Runner(opt).run();
      }
  
      @Benchmark
      @Warmup(iterations = 3)
      @Measurement(iterations = 8)
      @BenchmarkMode(Mode.Throughput)
      @OutputTimeUnit(TimeUnit.SECONDS)
      public void iterator(ContinuousKeySingleDeleteAndSeekState state, Blackhole bl) {
  //        IKVEngineIterator itr = kvEngine.newIterator(DEFAULT_NS, key.concat(toByteString(state.i)),
  //                key.concat(toByteString(state.i + 1)));
  //        try (IKVEngineIterator itr = state.kvEngine.newIterator(DEFAULT_NS)) {
          state.itr.refresh();
  //        state.itr.seekToLast();
          state.itr.seek(state.key.concat(toByteString(ThreadLocalRandom.current().nextInt(state.keyCount))));
          bl.consume(state.itr.isValid());
  //    }
  
      }
  }
  