Implementing repo storage into custom PDS

[rekkisomo]

Hey! I've created an app on atproto, but now creating my own PDS (also with typescript), mostly for experimenting with the idea of using Supabase as the db and having it live in a worker. I know of @atproto/repo, I really don't want to implement something like that from scratch, but I don't understand how it handles db interactions, specifically what's expected of RepoStorage. Is this something I have to build myself? If so, where's the best place to start?

I've had a look around in @atproto/pds but don't understand it's structure too well.

[rekkisomo]

lol, well, answered myself in a way?

Got a barebones reference here (Memory blockstore).

[DavidBuchanan314]

I'm not familiar enough with the typescript codebase to answer your question directly, but implementing it from scratch might be more approachable than you'd think. Even if you don't go that route, you might find these useful for reference:

https://github.com/snarfed/arroba - A from-scratch Python PDS implementation

https://github.com/DavidBuchanan314/picopds - Also a from-scratch Python PDS implementation, but a bit less "production ready", which also means there's less code to understand.

I know neither of these are typescript, but they're both smaller codebases, and perhaps that makes it easier to see what's going on.

[rekkisomo]

I did have a look at arroba before, and it's repo storage references the typescript implementation. Looking at how the repo works more I was just looking in the wrong places (being, the PDS' implementation). I was misunderstanding what the repo was actually doing.

You might be right though, implementing from scratch might honestly be better, especially to learn from. Thanks!