Post app launch logic

Justin_Pedersen · March 22, 2023, 11:25am

I’d like to run some logic after the engine has started within Maya. Specifically I am wanting to check what department the current logged in user is under and then run some logic off of that.

I’ve got a user setup.py running that will import sgtk but I am not sure how I could query the user from there as the engine hasn’t launched by that point in the startup sequence.

Something like a Post App Launch Hook would be great but to my knowledge there’s only the before app launch hook?

Any ideas appreciated!

rob-aitchison · March 22, 2023, 1:01pm

Hello @Justin_Pedersen ,

Have you looked into this tk-core hook?

github.com

shotgunsoftware/tk-core/blob/master/hooks/engine_init.py

# Copyright (c) 2018 Shotgun Software Inc.
#
# CONFIDENTIAL AND PROPRIETARY
#
# This work is provided "AS IS" and subject to the Shotgun Pipeline Toolkit
# Source Code License included in this distribution package. See LICENSE.
# By accessing, using, copying or modifying this work you indicate your
# agreement to the Shotgun Pipeline Toolkit Source Code License. All rights
# not expressly granted therein are reserved by Shotgun Software Inc.

"""
Hook that gets executed every time an engine has been fully initialized.
"""

from tank import Hook


class EngineInit(Hook):
    def execute(self, engine, **kwargs):
        """

This file has been truncated. show original

Let us know if this shows potential for your needs - cheers!

Justin_Pedersen · March 22, 2023, 2:59pm

Thanks Rob, that looks like the perfect match for what I was looking for!

Can’t believe I walked right past it

Ricardo_Musch · March 22, 2023, 11:26pm

If you are putting a lot of work into this functionality I would consider bundling it in a toolkit app so you have access to everything you need.
There are various places in the toolkit app where you can put logic depending on the state of things

mmoshev · March 23, 2023, 8:37am

When I started out and didn’t know about engine_init, I hacked engines to have an additional hook after_load which gets triggered in a specific place when the engine has been initialized.
I still think it might be a worthwhile addition - engine_init is a core hook, global for all engines.

Justin_Pedersen · March 23, 2023, 9:28am

This was just toggling AnimBot on if the current user had the Animation Group assigned to them.

Anything more complicated generally gets its own app / framework Huge fan of the apps and frameworks setup of SG so I use it every chance I get!

Justin_Pedersen · March 23, 2023, 10:11am

Actually a really good point! More hooks never hurt. Had to check against engine name in engine_init and then do my imports within the function like a filthy casual.

Ricardo_Musch · March 23, 2023, 11:11am

For plugin packs and managing various sets of plugin environments per project I would highly recommend using a Package manager like CPENV (which is integrated with Toolkit).