org.argeo.cms.e4/src/org/argeo/cms/e4/PrivilegedJob.java

   1 package org.argeo.cms.e4;
   2
   3 import java.security.AccessControlContext;
   4 import java.security.AccessController;
   5 import java.security.PrivilegedAction;
   6
   7 import javax.security.auth.Subject;
   8
   9 import org.eclipse.core.runtime.IProgressMonitor;
  10 import org.eclipse.core.runtime.IStatus;
  11 import org.eclipse.core.runtime.jobs.Job;
  12
  13 /**
  14  * Propagate authentication to an eclipse job. Typically to execute a privileged
  15  * action outside the UI thread
  16  */
  17 public abstract class PrivilegedJob extends Job {
  18         private final Subject subject;
  19
  20         public PrivilegedJob(String jobName) {
  21                 this(jobName, AccessController.getContext());
  22         }
  23
  24         public PrivilegedJob(String jobName,
  25                         AccessControlContext accessControlContext) {
  26                 super(jobName);
  27                 subject = Subject.getSubject(accessControlContext);
  28
  29                 // Must be called *before* the job is scheduled,
  30                 // it is required for the progress window to appear
  31                 setUser(true);
  32         }
  33
  34         @Override
  35         protected IStatus run(final IProgressMonitor progressMonitor) {
  36                 PrivilegedAction<IStatus> privilegedAction = new PrivilegedAction<IStatus>() {
  37                         public IStatus run() {
  38                                 return doRun(progressMonitor);
  39                         }
  40                 };
  41                 return Subject.doAs(subject, privilegedAction);
  42         }
  43
  44         /**
  45          * Implement here what should be executed with default context
  46          * authentication
  47          */
  48         protected abstract IStatus doRun(IProgressMonitor progressMonitor);
  49 }