1 /**
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 */
19 package org.apache.hadoop.hbase.regionserver;
20
21 import org.apache.hadoop.hbase.classification.InterfaceAudience;
22
23
24 /**
25 * LeaseListener is an interface meant to be implemented by users of the Leases
26 * class.
27 *
28 * It receives events from the Leases class about the status of its accompanying
29 * lease. Users of the Leases class can use a LeaseListener subclass to, for
30 * example, clean up resources after a lease has expired.
31 */
32 @InterfaceAudience.Private
33 public interface LeaseListener {
34 /** When a lease expires, this method is called. */
35 void leaseExpired();
36 }