001/**
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one
004 * or more contributor license agreements.  See the NOTICE file
005 * distributed with this work for additional information
006 * regarding copyright ownership.  The ASF licenses this file
007 * to you under the Apache License, Version 2.0 (the
008 * "License"); you may not use this file except in compliance
009 * with the License.  You may obtain a copy of the License at
010 *
011 *     http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 */
019package org.apache.hadoop.hbase.regionserver;
020
021import org.apache.yetus.audience.InterfaceAudience;
022
023
024/**
025 * LeaseListener is an interface meant to be implemented by users of the Leases
026 * class.
027 *
028 * It receives events from the Leases class about the status of its accompanying
029 * lease.  Users of the Leases class can use a LeaseListener subclass to, for
030 * example, clean up resources after a lease has expired.
031 */
032@InterfaceAudience.Private
033public interface LeaseListener {
034  /** When a lease expires, this method is called. */
035  void leaseExpired();
036}