code: /*
   * 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.skywalking.oap.log.analyzer.dsl.spec.sink.sampler;
  
  import io.netty.util.internal.ThreadLocalRandom;
  import lombok.EqualsAndHashCode;
  import lombok.Getter;
  import lombok.RequiredArgsConstructor;
  import lombok.experimental.Accessors;
  
  @RequiredArgsConstructor
  @Accessors(fluent = true)
  @EqualsAndHashCode(of = {"percentage"})
  public class PossibilitySampler implements Sampler {
      @Getter
      private final int percentage;
  
      private final ThreadLocalRandom random = ThreadLocalRandom.current();
  
      @Override
      public PossibilitySampler start() {
          return this;
      }
  
      @Override
      public void close() {
      }
  
      @Override
      public boolean sample() {
          return random.nextInt(100) < percentage;
      }
  
      @Override
      public PossibilitySampler reset() {
          return this;
      }
  }
  