001/** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 019package org.apache.hadoop.lib.service.security; 020 021import org.apache.hadoop.classification.InterfaceAudience; 022import org.apache.hadoop.conf.Configuration; 023import org.apache.hadoop.lib.server.BaseService; 024import org.apache.hadoop.lib.server.ServiceException; 025import org.apache.hadoop.lib.service.Groups; 026import org.apache.hadoop.lib.util.ConfigurationUtils; 027 028import java.io.IOException; 029import java.util.List; 030 031@InterfaceAudience.Private 032public class GroupsService extends BaseService implements Groups { 033 private static final String PREFIX = "groups"; 034 035 private org.apache.hadoop.security.Groups hGroups; 036 037 public GroupsService() { 038 super(PREFIX); 039 } 040 041 @Override 042 protected void init() throws ServiceException { 043 Configuration hConf = new Configuration(false); 044 ConfigurationUtils.copy(getServiceConfig(), hConf); 045 hGroups = new org.apache.hadoop.security.Groups(hConf); 046 } 047 048 @Override 049 public Class getInterface() { 050 return Groups.class; 051 } 052 053 @Override 054 public List<String> getGroups(String user) throws IOException { 055 return hGroups.getGroups(user); 056 } 057 058}