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/*
 * 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.hudi.hadoop.realtime;

import org.apache.hudi.common.model.HoodieLogFile;
import org.apache.hudi.common.util.Option;

import org.apache.hadoop.mapred.FileSplit;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

/**
 * Filesplit that wraps the base split and a list of log files to merge deltas from.
 */
public class HoodieRealtimeFileSplit extends FileSplit implements RealtimeSplit {

  private List deltaLogPaths;
  private List deltaLogFiles = new ArrayList<>();

  private String maxCommitTime;

  private String basePath;

  private Option hoodieVirtualKeyInfo = Option.empty();

  public HoodieRealtimeFileSplit() {
    super();
  }

  public HoodieRealtimeFileSplit(FileSplit baseSplit, String basePath, List deltaLogFiles, String maxCommitTime,
                                 Option hoodieVirtualKeyInfo)
      throws IOException {
    super(baseSplit.getPath(), baseSplit.getStart(), baseSplit.getLength(), baseSplit.getLocations());
    this.deltaLogFiles = deltaLogFiles;
    this.deltaLogPaths = deltaLogFiles.stream().map(entry -> entry.getPath().toString()).collect(Collectors.toList());
    this.maxCommitTime = maxCommitTime;
    this.basePath = basePath;
    this.hoodieVirtualKeyInfo = hoodieVirtualKeyInfo;
  }

  public List getDeltaLogPaths() {
    return deltaLogPaths;
  }

  public List getDeltaLogFiles() {
    return deltaLogFiles;
  }

  public String getMaxCommitTime() {
    return maxCommitTime;
  }

  public String getBasePath() {
    return basePath;
  }

  @Override
  public void setHoodieVirtualKeyInfo(Option hoodieVirtualKeyInfo) {
    this.hoodieVirtualKeyInfo = hoodieVirtualKeyInfo;
  }

  @Override
  public Option getHoodieVirtualKeyInfo() {
    return hoodieVirtualKeyInfo;
  }

  public void setDeltaLogPaths(List deltaLogPaths) {
    this.deltaLogPaths = deltaLogPaths;
  }

  public void setMaxCommitTime(String maxCommitTime) {
    this.maxCommitTime = maxCommitTime;
  }

  public void setBasePath(String basePath) {
    this.basePath = basePath;
  }

  @Override
  public void write(DataOutput out) throws IOException {
    super.write(out);
    writeToOutput(out);
  }

  @Override
  public void readFields(DataInput in) throws IOException {
    super.readFields(in);
    readFromInput(in);
  }

  @Override
  public String toString() {
    return "HoodieRealtimeFileSplit{DataPath=" + getPath() + ", deltaLogPaths=" + deltaLogPaths
        + ", maxCommitTime='" + maxCommitTime + '\'' + ", basePath='" + basePath + '\'' + '}';
  }
}