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1   /**
2    * Copyright 2007 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.regionserver;
21  
22  
23  /**
24   * LeaseListener is an interface meant to be implemented by users of the Leases
25   * class.
26   *
27   * It receives events from the Leases class about the status of its accompanying
28   * lease.  Users of the Leases class can use a LeaseListener subclass to, for
29   * example, clean up resources after a lease has expired.
30   */
31  public interface LeaseListener {
32    /** When a lease expires, this method is called. */
33    public void leaseExpired();
34  }