org.argeo.security.core/src/org/argeo/security/core/KeyBasedSystemExecutionService.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.security.core;
  17
  18 import java.util.concurrent.Callable;
  19 import java.util.concurrent.Executors;
  20 import java.util.concurrent.Future;
  21 import java.util.concurrent.FutureTask;
  22
  23 import org.argeo.ArgeoException;
  24 import org.argeo.security.SystemExecutionService;
  25
  26 /**
  27  * Implementation of a {@link SystemExecutionService} using a key-based
  28  * {@link InternalAuthentication}
  29  */
  30 public class KeyBasedSystemExecutionService extends AbstractSystemExecution
  31                 implements SystemExecutionService {
  32         public void execute(Runnable runnable) {
  33                 try {
  34                         wrapWithSystemAuthentication(Executors.callable(runnable)).call();
  35                 } catch (RuntimeException e) {
  36                         throw e;
  37                 } catch (Exception e) {
  38                         throw new ArgeoException(
  39                                         "Exception when running system authenticated task", e);
  40                 }
  41         }
  42
  43         public <T> Future<T> submit(Callable<T> task) {
  44                 FutureTask<T> future = new FutureTask<T>(
  45                                 wrapWithSystemAuthentication(task));
  46                 future.run();
  47                 return future;
  48         }
  49
  50         protected <T> Callable<T> wrapWithSystemAuthentication(
  51                         final Callable<T> runnable) {
  52                 return new Callable<T>() {
  53
  54                         public T call() throws Exception {
  55                                 authenticateAsSystem();
  56                                 try {
  57                                         return runnable.call();
  58                                 } finally {
  59 //                                      deauthenticateAsSystem();
  60                                 }
  61                         }
  62                 };
  63         }
  64 }