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pimoroni / clean-shutdown

Python daemon to watch a GPIO pin and trigger a clean shutdown.
MIT License
125 stars 40 forks source link

Any way to run a script when shutdown invoked? #12

Closed alc6379 closed 5 years ago

alc6379 commented 6 years ago

I'm using clean-shutdown, and I'd like to send a message to IFTTT that notifies me when shutdown is imminent.

Is there any hook into clean-shutdown where I can have an additional command run, like doing a post to a web service? I'm sure I can modify the script that is being run, but I didn't know if there was some modularity that allowed me to extend the script built-in.

Gadgetoid commented 6 years ago

Right now there's no easy way to hook into the shutdown event and run something, but it sounds like a worthwhile feature. I'd like to rewrite this script in Python to bring in some other requested features, that would be a good opportunity to add this.

alc6379 commented 6 years ago

Thanks. I wound up just modifying cleanshutd to add the webhook call via cURL. It was straightforward enough, but some type of directory where you could drop ad hoc scripts in, perhaps run in alphanumeric order (01-.sh, 02-.sh, etc) would be pretty neat.

Gadgetoid commented 5 years ago

It strikes me, in retrospect, that this would be recreating functionality already supplied by systemd using Before=shutdown.target and we'd just be muddying the water by creating yet-another-way.