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.carbondata.core.util;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.carbondata.core.constants.CarbonCommonConstants;
  import org.apache.carbondata.core.datastore.block.TableBlockInfo;
  import org.apache.carbondata.core.datastore.impl.FileFactory;
  import org.apache.carbondata.core.metadata.ColumnarFormatVersion;
  import org.apache.carbondata.core.metadata.blocklet.BlockletInfo;
  import org.apache.carbondata.core.metadata.blocklet.DataFileFooter;
  import org.apache.carbondata.core.metadata.blocklet.index.BlockletIndex;
  import org.apache.carbondata.core.metadata.schema.table.column.ColumnSchema;
  import org.apache.carbondata.core.reader.CarbonFooterReaderV3;
  import org.apache.carbondata.core.reader.CarbonHeaderReader;
  import org.apache.carbondata.format.FileFooter3;
  import org.apache.carbondata.format.FileHeader;
  
  import org.apache.hadoop.conf.Configuration;
  
  public class DataFileFooterConverterV3 extends AbstractDataFileFooterConverter {
  
    public DataFileFooterConverterV3(Configuration configuration) {
      super(configuration);
    }
  
    public DataFileFooterConverterV3() {
      super(FileFactory.getConfiguration());
    }
  
    /**
     * Below method will be used to convert thrift file meta to wrapper file meta
     * This method will read the footer from footer offset present in the data file
     * 1. It will read the header from carbon data file, header starts from 0 offset
     * 2. It will set the stream offset
     * 3. It will read the footer data from file
     * 4. parse the footer to thrift object
     * 5. convert to wrapper object
     *
     * @param tableBlockInfo
     *        table block info
     * @return data file footer
     */
    @Override
    public DataFileFooter readDataFileFooter(TableBlockInfo tableBlockInfo)
        throws IOException {
      CarbonHeaderReader carbonHeaderReader = new CarbonHeaderReader(tableBlockInfo.getFilePath());
      FileHeader fileHeader = carbonHeaderReader.readHeader();
      CarbonFooterReaderV3 reader =
          new CarbonFooterReaderV3(tableBlockInfo.getFilePath(), tableBlockInfo.getBlockOffset());
      FileFooter3 footer = reader.readFooterVersion3();
      return convertDataFileFooter(fileHeader, footer);
    }
  
    public DataFileFooter convertDataFileFooter(FileHeader fileHeader, FileFooter3 footer) {
      DataFileFooter dataFileFooter = new DataFileFooter();
      dataFileFooter.setVersionId(ColumnarFormatVersion.valueOf((short) fileHeader.getVersion()));
      dataFileFooter.setNumberOfRows(footer.getNum_rows());
      if (null != footer.getExtra_info()) {
        dataFileFooter.setCarbonDataFileWrittenVersion(
            footer.getExtra_info().get(CarbonCommonConstants.CARBON_WRITTEN_VERSION));
      }
      dataFileFooter.setSchemaUpdatedTimeStamp(fileHeader.getTime_stamp());
      if (footer.isSetIs_sort()) {
        dataFileFooter.setSorted(footer.isIs_sort());
      } else {
        dataFileFooter.setSorted(null);
      }
      List<ColumnSchema> columnSchemaList = convertColumnSchemaList(fileHeader.getColumn_schema());
      dataFileFooter.setColumnInTable(columnSchemaList);
      List<org.apache.carbondata.format.BlockletIndex> leaf_node_indices_Thrift =
          footer.getBlocklet_index_list();
      List<BlockletIndex> blockletIndexList = new ArrayList<BlockletIndex>();
      for (int i = 0; i < leaf_node_indices_Thrift.size(); i++) {
        BlockletIndex blockletIndex = getBlockletIndex(leaf_node_indices_Thrift.get(i));
        blockletIndexList.add(blockletIndex);
      }
      List<org.apache.carbondata.format.BlockletInfo3> leaf_node_infos_Thrift =
          footer.getBlocklet_info_list3();
      List<BlockletInfo> blockletInfoList = new ArrayList<BlockletInfo>();
      for (int i = 0; i < leaf_node_infos_Thrift.size(); i++) {
        BlockletInfo blockletInfo = getBlockletInfo(leaf_node_infos_Thrift.get(i),
            CarbonUtil.getNumberOfDimensionColumns(columnSchemaList));
        blockletInfo.setBlockletIndex(blockletIndexList.get(i));
        blockletInfoList.add(blockletInfo);
      }
      dataFileFooter.setBlockletList(blockletInfoList);
      dataFileFooter.setBlockletIndex(getBlockletIndexForDataFileFooter(blockletIndexList,
          dataFileFooter.getColumnInTable()));
      return dataFileFooter;
    }
  
    @Override
    public List<ColumnSchema> getSchema(TableBlockInfo tableBlockInfo) throws IOException {
      CarbonHeaderReader carbonHeaderReader = new CarbonHeaderReader(tableBlockInfo.getFilePath());
      return convertColumnSchemaList(carbonHeaderReader.readHeader().getColumn_schema());
    }
  
    /**
     * Below method is to convert the blocklet info of the thrift to wrapper
     * blocklet info
     *
     * @param blockletInfoThrift blocklet info of the thrift
     * @return blocklet info wrapper
     */
    public BlockletInfo getBlockletInfo(
        org.apache.carbondata.format.BlockletInfo3 blockletInfoThrift, int numberOfDimensionColumns) {
      BlockletInfo blockletInfo = new BlockletInfo();
      List<Long> dimensionColumnChunkOffsets =
          blockletInfoThrift.getColumn_data_chunks_offsets().subList(0, numberOfDimensionColumns);
      List<Long> measureColumnChunksOffsets = blockletInfoThrift.getColumn_data_chunks_offsets()
          .subList(numberOfDimensionColumns,
              blockletInfoThrift.getColumn_data_chunks_offsets().size());
      List<Integer> dimensionColumnChunkLength =
          blockletInfoThrift.getColumn_data_chunks_length().subList(0, numberOfDimensionColumns);
      List<Integer> measureColumnChunksLength = blockletInfoThrift.getColumn_data_chunks_length()
          .subList(numberOfDimensionColumns,
              blockletInfoThrift.getColumn_data_chunks_offsets().size());
      blockletInfo.setDimensionChunkOffsets(dimensionColumnChunkOffsets);
      blockletInfo.setMeasureChunkOffsets(measureColumnChunksOffsets);
      blockletInfo.setDimensionChunksLength(dimensionColumnChunkLength);
      blockletInfo.setMeasureChunksLength(measureColumnChunksLength);
      blockletInfo.setNumberOfRows(blockletInfoThrift.getNum_rows());
      blockletInfo.setDimensionOffset(blockletInfoThrift.getDimension_offsets());
      blockletInfo.setMeasureOffsets(blockletInfoThrift.getMeasure_offsets());
      blockletInfo.setNumberOfPages(blockletInfoThrift.getNumber_number_of_pages());
      if (blockletInfoThrift.getRow_count_in_page() != null
          && blockletInfoThrift.getRow_count_in_page().size() != 0) {
        int[] rowCountInPages = new int[blockletInfoThrift.getRow_count_in_page().size()];
        for (int i = 0; i < blockletInfoThrift.getRow_count_in_page().size(); i++) {
          rowCountInPages[i] = blockletInfoThrift.getRow_count_in_page().get(i);
        }
        blockletInfo.setNumberOfRowsPerPage(rowCountInPages);
      }
      return blockletInfo;
    }
  
  }
  
  