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.spark.shuffle.celeborn;
  
  import java.util.HashSet;
  import java.util.concurrent.ConcurrentHashMap;
  
  import org.apache.celeborn.client.ShuffleClient;
  import org.apache.celeborn.common.util.JavaUtils;
  
  public class ExecutorShuffleIdTracker {
    // track appShuffleId -> shuffleId Set in executor for cleanup
    private ConcurrentHashMap<Integer, HashSet<Integer>> shuffleIdMap =
        JavaUtils.newConcurrentHashMap();
  
    public void track(int appShuffleId, int shuffleId) {
      HashSet<Integer> shuffleIds = shuffleIdMap.computeIfAbsent(appShuffleId, id -> new HashSet<>());
  
      synchronized (shuffleIds) {
        shuffleIds.add(shuffleId);
      }
    }
  
    public void unregisterAppShuffleId(ShuffleClient shuffleClient, int appShuffleId) {
      HashSet<Integer> shuffleIds = shuffleIdMap.remove(appShuffleId);
      if (shuffleIds != null) {
        synchronized (shuffleIds) {
          shuffleIds.forEach(shuffleClient::cleanupShuffle);
        }
      }
    }
  }
  