Rust implementation?

[gadomski]

I was thinking about using the spec document in this repo, along with cribbing some of your code, to make a pure-Rust implementation over at https://github.com/stac-utils/stac-rs. I was curious if ya'll thought it would be more appropriate to build that implementation over here and just depend on stac-rs instead?

Presumably there could be Python bindings into the Rust impl as well, eventually...also guessing @kylebarron has thought about this already :-).

[kylebarron]

The pure-rust implementation would also convert STAC json to/from Arrow and Parquet? I'd love to see it but I'd imagine that the schema resolution will be a lot of work in Rust. Some of the pyarrow apis make our life a lot easier, and it would be annoying to redo that in Rust. But if you wanted to work on it, I'm of course very supportive

[gadomski]

Tight, alright I'll PoC something over at stac-rs and ping you when it's worth looking at. I've played a bit with https://docs.rs/arrow-json/51.0.0/arrow_json/reader/fn.infer_json_schema_from_iterator.html and I think it will mostly work, with some manual tweaks, but it's still early doors.

[kylebarron]

That won't work directly on the geometry field any time you have multiple geometry types in a single collection. E.g. if you have polygons most of the time but multi polygons over the antimeridian, it'll fail. We handle that by converting to WKB before inferring a schema from the JSON.

[gadomski]

Gentle, dumb proof-of-concept in this branch: https://github.com/stac-utils/stac-rs/pull/256. The motivating example (for now) is to use STAC-GeoParquet + DuckDB as an API backend.

[kylebarron]

If you run into any issues, feel free to ask!

[gadomski]

Released: https://github.com/stac-utils/stac-rs/releases/tag/stac-v0.9.0