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 */
018package org.apache.hadoop.hbase.backup;
019
020import org.apache.hadoop.conf.Configuration;
021import org.apache.hadoop.hbase.backup.mapreduce.MapReduceBackupCopyJob;
022import org.apache.hadoop.hbase.backup.mapreduce.MapReduceBackupMergeJob;
023import org.apache.hadoop.hbase.backup.mapreduce.MapReduceRestoreJob;
024import org.apache.hadoop.util.ReflectionUtils;
025import org.apache.yetus.audience.InterfaceAudience;
026
027/**
028 * Factory implementation for backup/restore related jobs
029 */
030@InterfaceAudience.Private
031public final class BackupRestoreFactory {
032  public final static String HBASE_INCR_RESTORE_IMPL_CLASS = "hbase.incremental.restore.class";
033  public final static String HBASE_BACKUP_COPY_IMPL_CLASS = "hbase.backup.copy.class";
034  public final static String HBASE_BACKUP_MERGE_IMPL_CLASS = "hbase.backup.merge.class";
035
036  private BackupRestoreFactory() {
037    throw new AssertionError("Instantiating utility class...");
038  }
039
040  /**
041   * Gets backup restore job
042   * @param conf configuration
043   * @return backup restore job instance
044   */
045  public static RestoreJob getRestoreJob(Configuration conf) {
046    Class<? extends RestoreJob> cls =
047      conf.getClass(HBASE_INCR_RESTORE_IMPL_CLASS, MapReduceRestoreJob.class, RestoreJob.class);
048    RestoreJob service = ReflectionUtils.newInstance(cls, conf);
049    service.setConf(conf);
050    return service;
051  }
052
053  /**
054   * Gets backup copy job
055   * @param conf configuration
056   * @return backup copy job instance
057   */
058  public static BackupCopyJob getBackupCopyJob(Configuration conf) {
059    Class<? extends BackupCopyJob> cls = conf.getClass(HBASE_BACKUP_COPY_IMPL_CLASS,
060      MapReduceBackupCopyJob.class, BackupCopyJob.class);
061    BackupCopyJob service = ReflectionUtils.newInstance(cls, conf);
062    service.setConf(conf);
063    return service;
064  }
065
066  /**
067   * Gets backup merge job
068   * @param conf configuration
069   * @return backup merge job instance
070   */
071  public static BackupMergeJob getBackupMergeJob(Configuration conf) {
072    Class<? extends BackupMergeJob> cls = conf.getClass(HBASE_BACKUP_MERGE_IMPL_CLASS,
073      MapReduceBackupMergeJob.class, BackupMergeJob.class);
074    BackupMergeJob service = ReflectionUtils.newInstance(cls, conf);
075    service.setConf(conf);
076    return service;
077  }
078}