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 java.io.IOException; 022 023import org.apache.commons.lang3.RandomStringUtils; 024import org.apache.hadoop.hbase.TableName; 025import org.apache.hadoop.hbase.client.Admin; 026import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor; 027import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder; 028import org.apache.hadoop.hbase.client.TableDescriptor; 029import org.apache.hadoop.hbase.client.TableDescriptorBuilder; 030import org.slf4j.Logger; 031import org.slf4j.LoggerFactory; 032 033/** 034 * Action the adds a column family to a table. 035 */ 036public class AddColumnAction extends Action { 037 private final TableName tableName; 038 private Admin admin; 039 private static final Logger LOG = LoggerFactory.getLogger(AddColumnAction.class); 040 041 public AddColumnAction(TableName tableName) { 042 this.tableName = tableName; 043 } 044 045 @Override 046 public void init(ActionContext context) throws IOException { 047 super.init(context); 048 this.admin = context.getHBaseIntegrationTestingUtility().getAdmin(); 049 } 050 051 @Override 052 public void perform() throws Exception { 053 TableDescriptor tableDescriptor = admin.getDescriptor(tableName); 054 ColumnFamilyDescriptor columnDescriptor = null; 055 056 while (columnDescriptor == null 057 || tableDescriptor.getColumnFamily(columnDescriptor.getName()) != null) { 058 columnDescriptor = ColumnFamilyDescriptorBuilder.of(RandomStringUtils.randomAlphabetic(5)); 059 } 060 061 // Don't try the modify if we're stopping 062 if (context.isStopping()) { 063 return; 064 } 065 066 LOG.debug("Performing action: Adding " + columnDescriptor + " to " + tableName); 067 068 TableDescriptor modifiedTable = TableDescriptorBuilder.newBuilder(tableDescriptor) 069 .setColumnFamily(columnDescriptor).build(); 070 admin.modifyTable(modifiedTable); 071 } 072}