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;
024import org.slf4j.Logger;
025import org.slf4j.LoggerFactory;
026
027/**
028* Action that tries to take a snapshot of a table.
029*/
030public class SnapshotTableAction extends Action {
031  private static final Logger LOG = LoggerFactory.getLogger(SnapshotTableAction.class);
032  private final TableName tableName;
033  private final long sleepTime;
034
035  public SnapshotTableAction(TableName tableName) {
036    this(-1, tableName);
037  }
038
039  public SnapshotTableAction(int sleepTime, TableName tableName) {
040    this.tableName = tableName;
041    this.sleepTime = sleepTime;
042  }
043
044  @Override protected Logger getLogger() {
045    return LOG;
046  }
047
048  @Override
049  public void perform() throws Exception {
050    HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility();
051    String snapshotName = tableName + "-it-" + System.currentTimeMillis();
052    Admin admin = util.getAdmin();
053
054    // Don't try the snapshot if we're stopping
055    if (context.isStopping()) {
056      return;
057    }
058
059    getLogger().info("Performing action: Snapshot table {}", tableName);
060    admin.snapshot(snapshotName, tableName);
061    if (sleepTime > 0) {
062      Thread.sleep(sleepTime);
063    }
064  }
065}