| /** |
| * 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.token.delegation.web; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.security.UserGroupInformation; |
| |
| import javax.servlet.http.HttpServletRequest; |
| |
| /** |
| * Util class that returns the remote {@link UserGroupInformation} in scope |
| * for the HTTP request. |
| */ |
| @InterfaceAudience.Private |
| public class HttpUserGroupInformation { |
| |
| /** |
| * Returns the remote {@link UserGroupInformation} in context for the current |
| * HTTP request, taking into account proxy user requests. |
| * |
| * @return the remote {@link UserGroupInformation}, <code>NULL</code> if none. |
| */ |
| public static UserGroupInformation get() { |
| return DelegationTokenAuthenticationFilter. |
| getHttpUserGroupInformationInContext(); |
| } |
| |
| } |