/**
* 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();
}
}