topic Re: Control user performing automatic task in Alfresco Archive

Control user performing automatic task

pcuvecle — Fri, 22 Dec 2006 08:15:21 GMT

Hi,Since it is possible to write automatic task in a jBPM Workflow, how is it possible to control what user will run the associated action ? ex :<task-node name="myNode"> <event type="node-leave"> <action name="myAction" class="myActionHandler"></action> <

Re: Control user performing automatic task

ribz33 — Fri, 22 Dec 2006 09:19:08 GMT

If i understand well, i think at the moment you cant

i had post already about this…
http://forums.alfresco.com/viewtopic.php?t=4644&highlight=

If you need it you can vote on jira ticket
http://issues.alfresco.com/browse/AR-1142

Re: Control user performing automatic task

pcuvecle — Fri, 22 Dec 2006 11:48:26 GMT

Hi,

Thanks for your quick answer
So If I understand well, the initiator of a workflow will be the user who will run the subsequent automatic tasks ?
I guess that the manual tasks assigned to real users will be exectuted under the corresponding credentials.

To workaround this, is there a way to eventually re-impersonate the session at the begining of a jBPM Action Handler class (even by providing the target user credentials) ?

Re: Control user performing automatic task

davidc — Wed, 03 Jan 2007 14:00:10 GMT

Workflow actions are executed as the user who signals the next step of the workflow. So, actions hooked into the start node are executed as the initiator, and subsequent task actions are executed as the user who ends the task.

You can execute as a specific user if you're developing your own Java action. You can retrieve any Alfresco service (including AuthenticationService) within a java action - see org.alfresco.repo.workflow.jbpm.AlfrescoJavaScript for an example of hooking into Alfresco services. You can use AuthenticationService and AuthenticationUtils to a run as a specific user.

Re: Control user performing automatic task

pcuvecle — Fri, 05 Jan 2007 14:04:54 GMT

Thanks David, I'll try to use to Authentication service to reimpersonate my session :wink:

Re: Control user performing automatic task

vladimir_kovaly — Fri, 30 Nov 2007 13:19:23 GMT

Have you succeeded? Could you please share the sources of your ActionHandler?

Re: Control user performing automatic task

pcuvecle — Mon, 03 Dec 2007 08:36:37 GMT

System account impersonation exemple :


// save user credentials
Authentication currentAuthentication = authenticationComponent.getCurrentAuthentication();
// authenticate as system user
authenticationComponent.setSystemUserAsCurrentUser();
UserTransaction transaction = transactionService.getUserTransaction();
try {
    transaction.begin();
    
    // your code
    
    transaction.commit();
} catch (Exception e) {
    try {
        transaction.rollback();
    } catch (IllegalStateException e1) {
        // handle exception
    } catch (SecurityException e1) {
        // handle exception
    } catch (SystemException e1) {
        // handle exception
    }
    
} finally {
    // restore user security context
    authenticationComponent.setCurrentAuthentication(currentAuthentication);
}
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Re: Control user performing automatic task

ribz33 — Mon, 03 Dec 2007 10:34:43 GMT

I did a class to execute workflow scripts as system user.
This can help you i think.

I contribute it to JIRA :
http://issues.alfresco.com/browse/AR-1911