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1   /**
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  package org.apache.hadoop.hbase.backup;
19  
20  import org.apache.hadoop.conf.Configuration;
21  import org.apache.hadoop.hbase.backup.mapreduce.MapReduceBackupCopyService;
22  import org.apache.hadoop.hbase.backup.mapreduce.MapReduceRestoreService;
23  import org.apache.hadoop.hbase.classification.InterfaceAudience;
24  import org.apache.hadoop.hbase.classification.InterfaceStability;
25  import org.apache.hadoop.util.ReflectionUtils;
26  
27  @InterfaceAudience.Private
28  @InterfaceStability.Evolving
29  public final class BackupRestoreServerFactory {
30  
31    public final static String HBASE_INCR_RESTORE_IMPL_CLASS = "hbase.incremental.restore.class";
32    public final static String HBASE_BACKUP_COPY_IMPL_CLASS = "hbase.backup.copy.class";
33  
34    private BackupRestoreServerFactory(){
35      throw new AssertionError("Instantiating utility class...");
36    }
37  
38    /**
39     * Gets incremental restore service
40     * @param conf - configuration
41     * @return incremental backup service instance
42     */
43    public static IncrementalRestoreService getIncrementalRestoreService(Configuration conf) {
44      Class<? extends IncrementalRestoreService> cls =
45          conf.getClass(HBASE_INCR_RESTORE_IMPL_CLASS, MapReduceRestoreService.class,
46            IncrementalRestoreService.class);
47      IncrementalRestoreService service =  ReflectionUtils.newInstance(cls, conf);
48      service.setConf(conf);
49      return service;
50    }
51  
52    /**
53     * Gets backup copy service
54     * @param conf - configuration
55     * @return backup copy service
56     */
57    public static BackupCopyService getBackupCopyService(Configuration conf) {
58      Class<? extends BackupCopyService> cls =
59          conf.getClass(HBASE_BACKUP_COPY_IMPL_CLASS, MapReduceBackupCopyService.class,
60            BackupCopyService.class);
61      BackupCopyService service = ReflectionUtils.newInstance(cls, conf);;
62      service.setConf(conf);
63      return service;
64    }
65  }