Page History

...

• cron is essentially restricted to "house cleaning" tasks, while it gets the task requeued as soon as it completes.No trigger can be expected from such task. It is used in operation to get nodes recording a day and time is achieved so they can alter a variable that  that is used in a trigger in  in a "user family". That way, there is no need for persistent event or meter for cron. As an example, /admin/times is memorising that the milestone is achieved, and /mofc/thu/01/ref is the user family where a trigger is defined: that way we avoid cron dependency directly into the functional suite.

suite admin
  family times
    family mon10
      cron -w 1 10:00
      task dummy
        edit DELTA_DAY '-1'
        edit YMD '20160717'
        edit DOW '1'
    endfamily
    family mon22
      label info "/mofc/mon products and plots"
      cron -w 1 22:00
      task dummy
        edit DELTA_DAY '-1'
        edit YMD '20160717'
        edit LAST_YMD 21000101
        edit LAST_HMS 9999
        edit DOW '1'
    endfamily
    family thu10 # ...
  endfamily
endsuite
suite user
family main
repeat YMD 19010101 20991201
task do
trigger /admin/times/mon22:LAST_YMD ge /user/main:YMD

node=/%SUITE%/%FAMILY%/%TASK%
%nopp
ecflow_client --alter change variable LAST_YMD "$(date +%Y%m%d)" $node
ecflow_client --alter change variable LAST_HMS "$(date +%H%M%S)" $node
%end

Be careful that cron may prevent an inherited repeat attribute to loop as expected. We use it with a complete attribute when we have to (Acquisition task pattern).

• repeat day 1 is used in few suites, to progress one day a each day. day is incremented once all tasks are complete, ie, i.e. there must be a task with a time attribute to ensure the suite is not looping before a given time. Additionnaly, we may appreciate to have a task which turns aborted when few families/task remain queued for some reason that would prevent the suite to loop.

...

repeat is incremented once all families/tasks below are complete. A task with a time attibute will prevent the increment before a given time. In Catchup-mode, defstatus complete attribute will inhibit the time dependency

...