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.celeborn.client;
  
  import java.io.IOException;
  import java.util.concurrent.atomic.LongAdder;
  
  import org.apache.tez.runtime.library.api.IOInterruptedException;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import org.apache.celeborn.client.write.DataPusher;
  import org.apache.celeborn.common.CelebornConf;
  import org.apache.celeborn.common.identity.UserIdentifier;
  
  public class CelebornTezWriter {
    private final Logger logger = LoggerFactory.getLogger(CelebornTezWriter.class);
  
    private final ShuffleClient shuffleClient;
    private DataPusher dataPusher;
    private final int shuffleId;
    private final int mapId;
    private final int attemptNumber;
    private final int numMappers;
    private final int numPartitions;
  
    public CelebornTezWriter(
        int shuffleId,
        int mapId,
        int attemptNumber,
        long taskAttemptId,
        int numMappers,
        int numPartitions,
        CelebornConf conf,
        String appUniqueId,
        String lifecycleManagerHost,
        int lifecycleManagerPort,
        UserIdentifier userIdentifier) {
      shuffleClient =
          ShuffleClient.get(
              appUniqueId, lifecycleManagerHost, lifecycleManagerPort, conf, userIdentifier, null);
      // TEZ_SHUFFLE_ID
      this.shuffleId = shuffleId;
      this.mapId = mapId;
      this.attemptNumber = attemptNumber;
      this.numMappers = numMappers;
      this.numPartitions = numPartitions;
  
      LongAdder[] mapStatusLengths = new LongAdder[numPartitions];
      for (int i = 0; i < numPartitions; i++) {
        mapStatusLengths[i] = new LongAdder();
      }
      try {
        dataPusher =
            new DataPusher(
                shuffleId,
                mapId,
                attemptNumber,
                taskAttemptId,
                numMappers,
                numPartitions,
                conf,
                shuffleClient,
                null,
                integer -> {},
                mapStatusLengths);
      } catch (InterruptedException e) {
        throw new RuntimeException(e);
      }
    }
  
    public void pushData(int partitionId, byte[] dataBuf, int size) throws IOException {
      try {
        dataPusher.addTask(partitionId, dataBuf, size);
      } catch (InterruptedException e) {
        throw new IOInterruptedException(e);
      }
    }
  
    public void mergeData(int partitionId, byte[] dataBuf, int size) throws IOException {
      int bytesWritten =
          shuffleClient.mergeData(
              shuffleId,
              mapId,
              attemptNumber,
              partitionId,
              dataBuf,
              0,
              size,
              numMappers,
              numPartitions);
    }
  
    public int getNumPartitions() {
      return numPartitions;
    }
  
    public void close() throws IOException {
      logger.info(
          "Call mapper end shuffleId:{} mapId:{} attemptId:{} numMappers:{}",
          0,
          mapId,
          attemptNumber,
          numMappers);
      try {
        dataPusher.waitOnTermination();
        shuffleClient.pushMergedData(shuffleId, mapId, attemptNumber);
        shuffleClient.mapperEnd(shuffleId, mapId, attemptNumber, numMappers, numPartitions);
      } catch (InterruptedException e) {
        throw new IOInterruptedException(e);
      }
    }
  }
  