| // 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.impala.util; |
| |
| import org.apache.impala.thrift.TSessionState; |
| |
| /** |
| * Utility functions for working with TSessionState objects. |
| */ |
| public class TSessionStateUtil { |
| /** |
| * Returns the actual user to perform authorisation against for the provided |
| * session. That is, returns the delegated user for a session if set, otherwise |
| * returns the connected user. |
| */ |
| public static String getEffectiveUser(TSessionState session) { |
| if (session.getDelegated_user() != null && |
| !session.getDelegated_user().isEmpty()) { |
| return session.getDelegated_user(); |
| } |
| return session.getConnected_user(); |
| } |
| } |