| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.hadoop.security; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.fs.CommonConfigurationKeysPublic; |
| |
| /** |
| * An interface for the implementation of <userId, userName> mapping |
| * and <groupId, groupName> mapping |
| */ |
| @InterfaceAudience.Public |
| @InterfaceStability.Evolving |
| public interface IdMappingServiceProvider { |
| |
| // Return uid for given user name |
| public int getUid(String user) throws IOException; |
| |
| // Return gid for given group name |
| public int getGid(String group) throws IOException; |
| |
| // Return user name for given user id uid, if not found, return |
| // <unknown> passed to this method |
| public String getUserName(int uid, String unknown); |
| |
| // Return group name for given groupd id gid, if not found, return |
| // <unknown> passed to this method |
| public String getGroupName(int gid, String unknown); |
| |
| // Return uid for given user name. |
| // When can't map user, return user name's string hashcode |
| public int getUidAllowingUnknown(String user); |
| |
| // Return gid for given group name. |
| // When can't map group, return group name's string hashcode |
| public int getGidAllowingUnknown(String group); |
| } |