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this post was submitted on 08 Jan 2024
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It needs direct access to the db, so in my case it's on the same vm as my instance.
It theoretically could be done in the webhook filter, it's a full (but limited) language, I'd just need to add support for some functions.
Those are not really webhooks for public use but for the instance admins, so filtering by posts mentioning Taylor Swift should be more than enough. But yeah, you can just send everything to your bot if it can handle that.
Oh I see, thanks. I was imagining this being used by bot authors who don't want to run actual lemmy instances. This makes sense now, given that you want to run your bots on Lambda. I'd just run them on a VM but that's just me. Cloudflare Workers seems like another possibility.
It's not only for the Lambda use case, my main motivation was AutoMods - they are very resource intensive currently and need to run very often. What you needed to do until this package, was traversing all new posts and all comments in there to check whether they're newer than the last post / comment you've moderated. Which is a lot of api requests every minute or two, you're essentially DDOSing yourself. With this, your AutoMod receives the information that a new comment was created and you can fetch the comment in a single (relatively inexpensive) api request, instead of plethora of requests which are all fairly expensive.
Whether the webhooks feature is then exposed to other users is really up to each instance admins, I'm thinking of exposing the functionality for my instance's users when I finish implementing all I have envisioned.
Of course bot authors can add support for webhook triggering which means the admins can then use it more effectively.
I see, that is a good application. How did Reddit deal with this issue? Lemmy does lots of dumb things by comparison it seems to me. I'd be surprised if reddit required constant polling from automods.
No idea, I didn't do any api development with Reddit, it felt way too oversaturated already. But event subscriptions are a common thing for such use-cases, so my guess would be actually very similar to what I have created here with this package.
Fair enough, but it sounds like the subscription feature should really be built into Lemmy's API. That is, your package is a useful workaround for a shortcoming in Lemmy. It's probably worth fixing Lemmy directly