Set process starter

[p.leu...@gmail.com]

Hi,

this is probably a very basic question, but I cannot find the information in the documentation:

I am starting CDI-injected processes by org.camunda.bpm.engine.cdi.BusinessProcess.startProcessByKey(String).
Later in my application I would like to query running instances by org.camunda.bpm.engine.history.HistoricProcessInstanceQuery.startedBy(String).

Until now I have not found a way to associate a fresh instance with the starting user, thus my query does not work.

Please let me know how to do this.

Thanks,
Philipp

[Daniel Meyer]

Hi Philipp,

You need to set the currently authenticated user:

@Inject
private BusinessProcess businessProcess;

@Inject
private IdentityService identityService;


public startProcess(...) {
  try {
    identityService.setAuthenticatedUserId("jonny");
    businessProcess.startProcessByKey(...)
  }
  finally{
    identityService.clearAuthentication();
  }
}

If you have a application you could also set the authentication globally somewhere using a ServletFilter or something.

Does this help you?

Cheers,

Daniel

[p.leu...@gmail.com]

Thanks, Daniel! This is exactly what I was looking for.

Cheers,
Philipp

[Si Joe]

Hi Daniel,

Thanks for your tip on setting authentication globally using a Servlet Filter. 

I have two questions:

1. Can I do a @Inject IdentityService within a servlet filter ?

2. In this case where do I call clearAuthentiction() ?

Regards

Si Joe

[Daniel Meyer]

Hi Si Joe,

CDI Injection into Filters should work in Java EE 6 and better. If it does not work, you can access the identity service using

IdentityService identityService = ProcessEngines.getDefaultProcessEngine().getIdentityService();

The filter pattern would work like this:

public class SecurityFilter implements Filter {

  @Inject
  private IdentityService identityService;

  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
 
    identityService.setAuthenticatedUserId("jonny");
    try {
      chain.doFilter(request, response);
    }
    finally {
      identityService.clearAuthentication();
    }
  }
 }

Hpe this helps,

Daniel

[Si Joe]

Hi Daniel,

That was perfect and works like a charm.

Thanks

S. Joe

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