hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/utils/db/DBUpdatesWrapper.java

/*
 * 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.hadoop.hdds.utils.db;

import java.util.ArrayList;
import java.util.List;

/**
 * Wrapper class to hold DB data read from the RocksDB log file.
 */
public class DBUpdatesWrapper {

  private List<byte[]> dataList = new ArrayList<>();
  private long currentSequenceNumber = -1;

  public void addWriteBatch(byte[] data, long sequenceNumber) {
    dataList.add(data);
    if (currentSequenceNumber < sequenceNumber) {
      currentSequenceNumber = sequenceNumber;
    }
  }

  public List<byte[]> getData() {
    return dataList;
  }

  public void setCurrentSequenceNumber(long sequenceNumber) {
    this.currentSequenceNumber = sequenceNumber;
  }

  public long getCurrentSequenceNumber() {
    return currentSequenceNumber;
  }
}