/**
* 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.hbase.util;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.CellScanner;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.KeyValue.Type;
import org.apache.hadoop.hbase.Tag;
import org.apache.hadoop.hbase.client.Mutation;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.util.MultiThreadedAction.DefaultDataGenerator;
@InterfaceAudience.Private
public class LoadTestDataGeneratorWithTags extends DefaultDataGenerator {
private int minNumTags, maxNumTags;
private int minTagLength, maxTagLength;
private Random random = new Random();
public LoadTestDataGeneratorWithTags(int minValueSize, int maxValueSize, int minColumnsPerKey,
int maxColumnsPerKey, byte[]... columnFamilies) {
super(minValueSize, maxValueSize, minColumnsPerKey, maxColumnsPerKey, columnFamilies);
}
@Override
public void initialize(String[] args) {
super.initialize(args);
if (args.length != 4) {
throw new IllegalArgumentException("LoadTestDataGeneratorWithTags must have "
+ "4 initialization arguments. ie. minNumTags:maxNumTags:minTagLength:maxTagLength");
}
// 1st arg in args is the min number of tags to be used with every cell
this.minNumTags = Integer.parseInt(args[0]);
// 2nd arg in args is the max number of tags to be used with every cell
this.maxNumTags = Integer.parseInt(args[1]);
// 3rd arg in args is the min tag length
this.minTagLength = Integer.parseInt(args[2]);
// 4th arg in args is the max tag length
this.maxTagLength = Integer.parseInt(args[3]);
}
@Override
public Mutation beforeMutate(long rowkeyBase, Mutation m) throws IOException {
if (m instanceof Put) {
List<Cell> updatedCells = new ArrayList<Cell>();
int numTags;
if (minNumTags == maxNumTags) {
numTags = minNumTags;
} else {
numTags = minNumTags + random.nextInt(maxNumTags - minNumTags);
}
List<Tag> tags;
for (CellScanner cellScanner = m.cellScanner(); cellScanner.advance();) {
Cell cell = cellScanner.current();
byte[] tag = LoadTestTool.generateData(random,
minTagLength + random.nextInt(maxTagLength - minTagLength));
tags = new ArrayList<Tag>();
for (int n = 0; n < numTags; n++) {
tags.add(new Tag((byte) 127, tag));
}
Cell updatedCell = new KeyValue(cell.getRowArray(), cell.getRowOffset(),
cell.getRowLength(), cell.getFamilyArray(), cell.getFamilyOffset(),
cell.getFamilyLength(), cell.getQualifierArray(), cell.getQualifierOffset(),
cell.getQualifierLength(), cell.getTimestamp(), Type.codeToType(cell.getTypeByte()),
cell.getValueArray(), cell.getValueOffset(), cell.getValueLength(), tags);
updatedCells.add(updatedCell);
}
m.getFamilyCellMap().clear();
// Clear and add new Cells to the Mutation.
for (Cell cell : updatedCells) {
((Put) m).add(cell);
}
}
return m;
}
}