| /* |
| * 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.parquet.tools.command; |
| |
| import org.apache.commons.cli.CommandLine; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.parquet.HadoopReadOptions; |
| import org.apache.parquet.hadoop.ParquetFileReader; |
| import org.apache.parquet.hadoop.ParquetFileWriter; |
| import org.apache.parquet.hadoop.metadata.ParquetMetadata; |
| import org.apache.parquet.hadoop.util.ColumnMasker; |
| import org.apache.parquet.hadoop.util.CompressionConverter.TransParquetFileReader; |
| import org.apache.parquet.hadoop.util.HadoopInputFile; |
| import org.apache.parquet.schema.MessageType; |
| |
| import java.util.List; |
| |
| import static org.apache.parquet.format.converter.ParquetMetadataConverter.NO_FILTER; |
| import org.apache.parquet.hadoop.util.ColumnMasker.MaskMode; |
| |
| public class ColumnMaskingCommand extends ArgsOnlyCommand { |
| |
| private static final int MAX_COL_NUM = 100; |
| |
| public static final String[] USAGE = new String[] { |
| "<mask_mode> <input> <output> [<column> ...]", |
| |
| "where <mask_mode> is mask mode: nullify, hash, redact" + |
| " <input> is the source parquet file", |
| " <output> is the destination parquet file," + |
| " [<column> ...] are the columns in the case sensitive dot format" |
| }; |
| |
| private Configuration conf; |
| private ColumnMasker masker; |
| |
| public ColumnMaskingCommand() { |
| super(4, MAX_COL_NUM + 3); |
| this.conf = new Configuration(); |
| masker = new ColumnMasker(); |
| } |
| |
| public ColumnMaskingCommand(Configuration conf) { |
| super(4, MAX_COL_NUM + 3); |
| this.conf = conf; |
| masker = new ColumnMasker(); |
| } |
| |
| @Override |
| public String[] getUsageDescription() { |
| return USAGE; |
| } |
| |
| @Override |
| public String getCommandDescription() { |
| return "Replace columns in a given Parquet file with masked values and write to a new Parquet file."; |
| } |
| |
| @Override |
| public void execute(CommandLine options) throws Exception { |
| super.execute(options); |
| List<String> args = options.getArgList(); |
| MaskMode mode = MaskMode.fromString(args.get(0)); |
| Path inPath = new Path(args.get(1)); |
| Path outPath = new Path(args.get(2)); |
| List<String> cols = args.subList(3, args.size()); |
| |
| ParquetMetadata metaData = ParquetFileReader.readFooter(conf, inPath, NO_FILTER); |
| MessageType schema = metaData.getFileMetaData().getSchema(); |
| ParquetFileWriter writer = new ParquetFileWriter(conf, schema, outPath, ParquetFileWriter.Mode.CREATE); |
| writer.start(); |
| |
| try (TransParquetFileReader reader = new TransParquetFileReader(HadoopInputFile.fromPath(inPath, conf), HadoopReadOptions.builder(conf).build())) { |
| masker.processBlocks(reader, writer, metaData, schema, cols, mode); |
| } finally { |
| writer.end(metaData.getFileMetaData().getKeyValueMetaData()); |
| } |
| } |
| } |