001 /** 002 * Copyright (c) 2010 Yahoo! Inc. All rights reserved. 003 * Licensed under the Apache License, Version 2.0 (the "License"); 004 * you may not use this file except in compliance with the License. 005 * You may obtain a copy of the License at 006 * 007 * http://www.apache.org/licenses/LICENSE-2.0 008 * 009 * Unless required by applicable law or agreed to in writing, software 010 * distributed under the License is distributed on an "AS IS" BASIS, 011 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012 * See the License for the specific language governing permissions and 013 * limitations under the License. See accompanying LICENSE file. 014 */ 015 package org.apache.oozie.action.hadoop; 016 017 import org.apache.hadoop.security.UserGroupInformation; 018 import org.apache.oozie.action.hadoop.DoAs; 019 020 import java.security.PrivilegedExceptionAction; 021 import java.util.concurrent.Callable; 022 023 //TODO this class goes away when doing 20.100+ only 024 025 //TODO this class is for testing, but is here to allow selective compilation 026 public class KerberosDoAs extends DoAs { 027 028 public Void call() throws Exception { 029 final Callable<Void> callable = getCallable(); 030 UserGroupInformation ugi = UserGroupInformation.createProxyUser(getUser(), UserGroupInformation.getLoginUser()); 031 ugi.doAs(new PrivilegedExceptionAction<Void>() { 032 public Void run() throws Exception { 033 callable.call(); 034 return null; 035 } 036 }); 037 return null; 038 } 039 }