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.bookkeeper.tools.perf.table;
  
  import io.netty.buffer.ByteBuf;
  import java.util.Random;
  import java.util.concurrent.Callable;
  import org.apache.bookkeeper.api.kv.Table;
  import org.apache.bookkeeper.tools.perf.table.PerfClient.Flags;
  
  /**
   * Abstract benchmark task.
   */
  abstract class BenchmarkTask implements Callable<Void> {
  
      protected final Table<ByteBuf, ByteBuf> table;
      protected final int tid;
      protected final Random random;
      protected final long numRecords;
      protected final long keyRange;
      protected final Flags flags;
      protected final KeyGenerator generator;
  
      BenchmarkTask(Table<ByteBuf, ByteBuf> table,
                    int tid,
                    long randSeed,
                    long numRecords,
                    long keyRange,
                    Flags flags,
                    KeyGenerator generator) {
          this.table = table;
          this.tid = tid;
          this.random = new Random(randSeed + tid * 1000);
          this.numRecords = numRecords;
          this.keyRange = keyRange;
          this.flags = flags;
          this.generator = generator;
      }
  
      @Override
      public Void call() throws Exception {
          runTask();
          return null;
      }
  
      protected abstract void runTask() throws Exception;
  
      protected void getFixedKey(ByteBuf key, long sn) {
          generator.generateKeyFromLong(key, sn);
      }
  
      protected void getRandomKey(ByteBuf key, long range) {
          generator.generateKeyFromLong(key, Math.abs(random.nextLong() % range));
      }
  
      protected abstract void reportStats(long oldTime);
  
      protected abstract void printAggregatedStats();
  
  }
  