View Javadoc

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.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  }