001    /*
002     * Copyright (c) 2011, Cloudera, Inc. All Rights Reserved.
003     *
004     * Cloudera, Inc. licenses this file to you under the Apache License,
005     * Version 2.0 (the "License"). You may not use this file except in
006     * compliance with the License. You may obtain a copy of the License at
007     *
008     *     http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * This software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
011     * CONDITIONS OF ANY KIND, either express or implied. See the License for
012     * the specific language governing permissions and limitations under the
013     * License.
014     */
015    package com.cloudera.lib.service.security;
016    
017    import com.cloudera.lib.server.BaseService;
018    import com.cloudera.lib.server.ServiceException;
019    import com.cloudera.lib.service.Groups;
020    import com.cloudera.lib.util.XConfiguration;
021    import org.apache.hadoop.conf.Configuration;
022    
023    import java.io.IOException;
024    import java.util.List;
025    
026    public class GroupsService extends BaseService implements Groups {
027      private static final String PREFIX = "groups";
028    
029      private org.apache.hadoop.security.Groups hGroups;
030    
031      public GroupsService() {
032        super(PREFIX);
033      }
034    
035      @Override
036      protected void init() throws ServiceException {
037        Configuration hConf = new XConfiguration();
038        XConfiguration.copy(getServiceConfig(), hConf);
039        hGroups = new org.apache.hadoop.security.Groups(hConf);
040      }
041    
042      @Override
043      public Class getInterface() {
044        return Groups.class;
045      }
046    
047      @Override
048      public List<String> getGroups(String user) throws IOException {
049        return hGroups.getGroups(user);
050      }
051    
052    }