Development branch: Spotify Plugin sometimes fails to start

[dennisrijsdijk]

The plugin fails to load, causing the actions to show up blank with an orange circle.

I can't find a reliable way to reproduce this, though it seems to happen more often on system startup/login

relevant log excerpt:

2025-05-19 17:11:46.746 | INFO     | src.backend.PluginManager.PluginBase:launch_backend:636 - Launching backend: . /home/dennisr/.var/app/com.core447.StreamController/data/plugins/com_ReneLu_spotifyControl/backend/.venv/bin/activate && python3 /home/dennisr/.var/app/com.core447.StreamController/data/plugins/com_ReneLu_spotifyControl/backend/backend.py --port=45095
2025-05-19 17:11:47.047 | DEBUG    | plugins.com_ReneLu_spotifyControl.settings:__init__:23 - Initialize Settings
2025-05-19 17:11:47.047 | ERROR    | src.backend.PluginManager.PluginManager:init_plugins:71 - Error initializing plugin <class 'plugins.com_ReneLu_spotifyControl.main.SpotifyControl'>: 'NoneType' object has no attribute 'reauthenticate'. Skipping...

full log:
StreamController_2025_05_19_17:23:50.log

[ReneLu]

Thank you for the Info. I will look into it.

[dennisrijsdijk]

The issue at play here is a race condition where the backend takes longer than 0.3 seconds to initialize (in SC code, wait_for_backend makes 3 tries of 0.1 seconds) which means the program erroneously continues to plugin code while the backend is not yet registered. This causes the Spotify plugin to error when it tries to reauthenticate in the constructor for PluginSettings.

I was able to reliably reproduce this by lowering my CPU clockspeed artificially. It makes some sense this happens for me on system login, as I have multiple other apps starting at the same time as StreamController.

[ReneLu]

Thank you for the in depth research. I have a quick workaround in mind that I will implement until the problem is solved in the streamcontroller.