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 org.apache.spark.SparkConf;
  import org.apache.spark.TaskContext;
  import org.apache.spark.shuffle.ShuffleHandle;
  import org.apache.spark.shuffle.ShuffleReadMetricsReporter;
  import org.apache.spark.shuffle.ShuffleReader;
  
  public class TestCelebornShuffleManager extends SparkShuffleManager {
  
    private static ShuffleManagerHook shuffleReaderGetHook = null;
  
    public TestCelebornShuffleManager(SparkConf conf) {
      super(conf, true);
    }
  
    public static void registerReaderGetHook(ShuffleManagerHook hook) {
      shuffleReaderGetHook = hook;
    }
  
    @Override
    public <K, C> ShuffleReader<K, C> getReader(
        ShuffleHandle handle,
        int startMapIndex,
        int endMapIndex,
        int startPartition,
        int endPartition,
        TaskContext context,
        ShuffleReadMetricsReporter metrics) {
      if (shuffleReaderGetHook != null) {
        shuffleReaderGetHook.exec(
            handle, startMapIndex, endMapIndex, startPartition, endPartition, context);
      }
      return super.getReader(
          handle, startMapIndex, endMapIndex, startPartition, endPartition, context, metrics);
    }
  
    @Override
    public <K, C> ShuffleReader<K, C> getReader(
        ShuffleHandle handle,
        int startPartition,
        int endPartition,
        TaskContext context,
        ShuffleReadMetricsReporter metrics) {
      if (shuffleReaderGetHook != null) {
        shuffleReaderGetHook.exec(handle, startPartition, endPartition, context);
      }
      return super.getReader(handle, startPartition, endPartition, context, metrics);
    }
  }
  