001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.io.encoding;
019
020import org.apache.hadoop.hbase.Cell;
021import org.apache.hadoop.hbase.KeyValueUtil;
022import org.apache.yetus.audience.InterfaceAudience;
023
024/**
025 * Keeps track of the encoding state.
026 */
027@InterfaceAudience.Private
028public class EncodingState {
029
030  /**
031   * The previous Cell the encoder encoded.
032   */
033  protected Cell prevCell = null;
034
035  // Size of actual data being written. Not considering the block encoding/compression. This
036  // includes the header size also.
037  protected int unencodedDataSizeWritten = 0;
038
039  // Size of actual data being written. considering the block encoding. This
040  // includes the header size also.
041  protected int encodedDataSizeWritten = 0;
042
043  public void beforeShipped() {
044    if (this.prevCell != null) {
045      // can't use KeyValueUtil#toNewKeyCell, because we need both key and value
046      // from the prevCell in FastDiffDeltaEncoder
047      this.prevCell = KeyValueUtil.copyToNewKeyValue(this.prevCell);
048    }
049  }
050
051  public void postCellEncode(int unencodedCellSizeWritten, int encodedCellSizeWritten) {
052    this.unencodedDataSizeWritten += unencodedCellSizeWritten;
053    this.encodedDataSizeWritten += encodedCellSizeWritten;
054  }
055
056  public int getUnencodedDataSizeWritten() {
057    return unencodedDataSizeWritten;
058  }
059
060  public int getEncodedDataSizeWritten() {
061    return encodedDataSizeWritten;
062  }
063}