KeyBasedSystemExecutionService.java

   1 package org.argeo.security.core;
   2
   3 import java.util.concurrent.Callable;
   4 import java.util.concurrent.Executors;
   5 import java.util.concurrent.Future;
   6 import java.util.concurrent.FutureTask;
   7
   8 import org.argeo.ArgeoException;
   9 import org.argeo.security.SystemExecutionService;
  10
  11 /**
  12  * Implementation of a {@link SystemExecutionService} using a key-based
  13  * {@link InternalAuthentication}
  14  */
  15 public class KeyBasedSystemExecutionService extends AbstractSystemExecution
  16                 implements SystemExecutionService {
  17         public void execute(Runnable runnable) {
  18                 try {
  19                         wrapWithSystemAuthentication(Executors.callable(runnable)).call();
  20                 } catch (RuntimeException e) {
  21                         throw e;
  22                 } catch (Exception e) {
  23                         throw new ArgeoException(
  24                                         "Exception when running system authenticated task", e);
  25                 }
  26         }
  27
  28         public <T> Future<T> submit(Callable<T> task) {
  29                 FutureTask<T> future = new FutureTask<T>(
  30                                 wrapWithSystemAuthentication(task));
  31                 future.run();
  32                 return future;
  33         }
  34
  35         protected <T> Callable<T> wrapWithSystemAuthentication(
  36                         final Callable<T> runnable) {
  37                 return new Callable<T>() {
  38
  39                         public T call() throws Exception {
  40                                 authenticateAsSystem();
  41                                 try {
  42                                         return runnable.call();
  43                                 } finally {
  44                                         deauthenticateAsSystem();
  45                                 }
  46                         }
  47                 };
  48         }
  49 }