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 */
018package org.apache.hadoop.hbase.security.visibility;
019
020import java.util.List;
021
022import org.apache.yetus.audience.InterfaceAudience;
023import org.apache.hadoop.conf.Configurable;
024import org.apache.hadoop.hbase.security.User;
025
026/**
027 * This would be the interface which would be used add labels to the RPC context
028 * and this would be stored against the UGI.
029 *
030 */
031@InterfaceAudience.Public
032public interface ScanLabelGenerator extends Configurable {
033
034  /**
035   * Helps to get a list of lables associated with an UGI
036   * @param user
037   * @param authorizations
038   * @return The labels 
039   */
040  public List<String> getLabels(User user, Authorizations authorizations);
041}