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 */
018
019package org.apache.hadoop.hbase.chaos.actions;
020
021import org.apache.hadoop.hbase.HBaseTestingUtility;
022import org.apache.hadoop.hbase.TableName;
023import org.apache.hadoop.hbase.client.Admin;
024
025/**
026* Action that tries to take a snapshot of a table.
027*/
028public class SnapshotTableAction extends Action {
029  private final TableName tableName;
030  private final long sleepTime;
031
032  public SnapshotTableAction(TableName tableName) {
033    this(-1, tableName);
034  }
035
036  public SnapshotTableAction(int sleepTime, TableName tableName) {
037    this.tableName = tableName;
038    this.sleepTime = sleepTime;
039  }
040
041  @Override
042  public void perform() throws Exception {
043    HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility();
044    String snapshotName = tableName + "-it-" + System.currentTimeMillis();
045    Admin admin = util.getAdmin();
046
047    // Don't try the snapshot if we're stopping
048    if (context.isStopping()) {
049      return;
050    }
051
052    LOG.info("Performing action: Snapshot table " + tableName);
053    admin.snapshot(snapshotName, tableName);
054    if (sleepTime > 0) {
055      Thread.sleep(sleepTime);
056    }
057  }
058}