What’s the best practice for starting the run of a subflow X hours after the start of a flow? I have a StartFlowRun task that takes a scheduled_start_time. But will that scheduled start time get fixed at flow registration time? This should be dynamic depending on the start of the main flow.

create_flow_run

takes in a delay so you can schedule it a few hours later. There was a recent PR for that. Is that what you need?

What if we need more complex scheduling of subflows than just a delay? Like suppose we wanted to start the subflow immediately if it’s past noon, otherwise wait until noon.

You can have a task beforehand that makes the inputs into

create_flow_run

because that is the run method already you are calling

Is there a reason we can’t use StartFlowRun?

It doesn’t have the keyword argument for the delay to start the new flow run. You could have a task that produces the

scheduled_start_time

and you then pass it to

StartFlowRun

I think the difference is that with StartFlowRun, the scheduled start time parameter is an INIT parameter and not a RUN parameter. I think you couldn’t generate a start time in a task and then pass it to StartFlowRun

I see it in the run. I think as long you are on 0.15.0+, it should be around?

Ah nice! That seemed to work

Nice!