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.chaos.actions;
019
020import java.util.concurrent.ThreadLocalRandom;
021import org.apache.hadoop.hbase.HBaseTestingUtility;
022import org.apache.hadoop.hbase.TableName;
023import org.apache.hadoop.hbase.client.Admin;
024import org.slf4j.Logger;
025import org.slf4j.LoggerFactory;
026
027/**
028 * Action that tries to truncate of a table.
029 */
030public class TruncateTableAction extends Action {
031  private static final Logger LOG = LoggerFactory.getLogger(TruncateTableAction.class);
032  private final TableName tableName;
033
034  public TruncateTableAction(String tableName) {
035    this.tableName = TableName.valueOf(tableName);
036  }
037
038  @Override
039  protected Logger getLogger() {
040    return LOG;
041  }
042
043  @Override
044  public void perform() throws Exception {
045    HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility();
046    Admin admin = util.getAdmin();
047
048    // Don't try the truncate if we're stopping
049    if (context.isStopping()) {
050      return;
051    }
052
053    boolean preserveSplits = ThreadLocalRandom.current().nextBoolean();
054    getLogger().info("Performing action: Truncate table {} preserve splits {}",
055      tableName.getNameAsString(), preserveSplits);
056    admin.truncateTable(tableName, preserveSplits);
057  }
058}