camundabpmn

BPMN2 timer events how to repeat after a delay?

I am new to BPMN and camunda. How to implement this: I have a user task, I want to set a timeout, let’s say 3 days. If user don’t complete the task in 3 days, every hour I will send a SMS message to remind the user. enter image description here I tried to use boundary timer event to model the timeout, but failed to repeat the SMS notify task by 1 hour, as the intermedia timer catch event can only have duration, not cycle. please help…

please note, the SMS task need to start after the 3 days timout.

I am using camunda desktop modeler 5.16.0

Solution

  • the boundary timer event's timer expression can be:

    "R3/" + substring(string(now() + duration("P3D")),1,19) + "Z/PT1H"

    which means: start from 3 days later, repeat every 1 hour, max 3 times.

    note: this may be camunda specific, may not apply to other bpmn implementations.