Hey P team, a question about migrating to RunConfigs: We’re on Prefect 0.14.4 and looking to migrate off of LocalEnvironment (also using DaskExecutor + FargateAgent). We are currently relying on LocalEnvironment’s

on_start

arg in order to bootstrap django when our flow runs. I’m not seeing any replacement for that in the new RunConfig world. Did I miss something… or is there another pattern for this? Thanks!

Would it be possible to do that bootstrapping in a state handler that handles the transition of the flow from pending to running states? I'm doing such startup for a shared database connection (two, actually) that gets reused across multiple tasks, and it seems to work, but I don't know if it'll work for django.

on_start

hooks haven't been added back (yet). The hope was other patterns might suffice. In your case, it sounds like your tasks rely on some implicit local state - if this fails to set up properly you probably want to be informed of failure (and get logs), just like any other tasks. You might find the

resource_manager

pattern useful for this: https://docs.prefect.io/core/idioms/resource-manager.html. In this case, you'd create a

resource_manager

for that would bootstrap django in

setup

, and cleanup resources in

cleanup

.

Thanks @Jim Crist-Harif for the context & info. I will give the resource manager a shot.