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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.commons.logging.Log;
21  import org.apache.commons.logging.LogFactory;
22  import org.apache.hadoop.conf.Configuration;
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 BackupRestoreClientFactory {
30    private static final Log LOG = LogFactory.getLog(BackupRestoreClientFactory.class);
31  
32    private BackupRestoreClientFactory(){
33      throw new AssertionError("Instantiating utility class...");
34    }
35    
36      
37    /**
38     * Gets restore client implementation
39     * @param conf - configuration
40     * @return backup client
41     */
42    public static RestoreClient getRestoreClient(Configuration conf) {
43      try{
44        Class<?> cls =
45          conf.getClassByName("org.apache.hadoop.hbase.backup.impl.RestoreClientImpl");
46           
47        RestoreClient client = (RestoreClient) ReflectionUtils.newInstance(cls, conf);
48        client.setConf(conf);
49        return client;
50      } catch(Exception e){
51        LOG.error("Can not instantiate RestoreClient. Make sure you have hbase-server jar in CLASSPATH", e);
52      }
53      return null;
54    }
55  }