| /** |
| * 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.classification.InterfaceStability; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.hadoop.security.authentication.client.PseudoAuthenticator; |
| |
| import java.io.IOException; |
| |
| /** |
| * The <code>PseudoDelegationTokenAuthenticator</code> provides support for |
| * Hadoop's pseudo authentication mechanism that accepts |
| * the user name specified as a query string parameter and support for Hadoop |
| * Delegation Token operations. |
| * <p/> |
| * This mimics the model of Hadoop Simple authentication trusting the |
| * {@link UserGroupInformation#getCurrentUser()} value. |
| */ |
| @InterfaceAudience.Public |
| @InterfaceStability.Evolving |
| public class PseudoDelegationTokenAuthenticator |
| extends DelegationTokenAuthenticator { |
| |
| public PseudoDelegationTokenAuthenticator() { |
| super(new PseudoAuthenticator() { |
| @Override |
| protected String getUserName() { |
| try { |
| return UserGroupInformation.getCurrentUser().getShortUserName(); |
| } catch (IOException ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| }); |
| } |
| |
| } |