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1   /*
2    * Copyright 2010 The Apache Software Foundation
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  package org.apache.hadoop.hbase.master;
21  
22  import org.apache.hadoop.conf.Configurable;
23  import org.apache.hadoop.conf.Configuration;
24  import org.apache.hadoop.fs.Path;
25  
26  /**
27   * Interface for the log cleaning function inside the master. Only 1 is called
28   * so if the desired effect is the mix of many cleaners, do call them yourself
29   * in order to control the flow.
30   * HBase ships with OldLogsCleaner as the default implementation.
31   * This interface extends Configurable, so setConf needs to be called once
32   * before using the cleaner.
33   */
34  public interface LogCleanerDelegate extends Configurable {
35  
36    /**
37     * Should the master delete the log or keep it?
38     * @param filePath full path to log.
39     * @return true if the log is deletable, false if not
40     */
41    public boolean isLogDeletable(Path filePath);
42  }
43