1 /**
2  * Licensed to the Apache Software Foundation (ASF) under one
3  * or more contributor license agreements.  See the NOTICE file
4  * distributed with this work for additional information
5  * regarding copyright ownership.  The ASF licenses this file
6  * to you under the Apache License, Version 2.0 (the
7  * "License"); you may not use this file except in compliance
8  * with the License.  You may obtain a copy of the License at
9  *
10  *     http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18 
19 package org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair;
20 
21 import org.apache.hadoop.security.GroupMappingServiceProvider;
22 
23 import java.io.IOException;
24 import java.util.Arrays;
25 import java.util.List;
26 
27 public class PeriodGroupsMapping implements GroupMappingServiceProvider {
28 
29   @Override
getGroups(String user)30   public List<String> getGroups(String user) {
31     return Arrays.asList(user + ".group", user + "subgroup1", user + "subgroup2");
32   }
33 
34   @Override
cacheGroupsRefresh()35   public void cacheGroupsRefresh() throws IOException {
36     throw new UnsupportedOperationException();
37   }
38 
39   @Override
cacheGroupsAdd(List<String> groups)40   public void cacheGroupsAdd(List<String> groups) throws IOException {
41     throw new UnsupportedOperationException();
42   }
43 
44 }
45