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Server functionality for HBase

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.hadoop.hbase.master.cleaner;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.io.HFileLink;
import org.apache.hadoop.hbase.regionserver.StoreFileInfo;
import org.apache.yetus.audience.InterfaceAudience;

/**
 * HFile cleaner that uses the timestamp of the hfile to determine if it should be deleted. By
 * default they are allowed to live for {@value #DEFAULT_TTL}
 */
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG)
public class TimeToLiveHFileCleaner extends BaseTimeToLiveFileCleaner {

  public static final String TTL_CONF_KEY = "hbase.master.hfilecleaner.ttl";

  // default ttl = 5 minutes
  public static final long DEFAULT_TTL = 60000 * 5;

  @Override
  protected long getTtlMs(Configuration conf) {
    return conf.getLong(TTL_CONF_KEY, DEFAULT_TTL);
  }

  @Override
  protected boolean valiateFilename(Path file) {
    return HFileLink.isBackReferencesDir(file) || HFileLink.isBackReferencesDir(file.getParent())
      || StoreFileInfo.validateStoreFileName(file.getName());
  }
}