Kotlinx.serialization: Is there any kotlin class generator based on .proto file available?

[acc110789]

just as title

[qwwdfsad]

There isn't any and we have no plans to add it in the nearest future.

This project has a purpose drastically different from the original Protobuf: Kotlin-first data model that is format-agnostic and can be shared between all the platforms Kotlin supports.
Kotlin classes are the core of the application data model, not the formats or schemas.

Protobuf inverses this principle: .proto file is the core of the data model and every "backend" (language, service, w/e) decides exactly to process it complying the given schema.

What we have in mind is generating .proto files from the given serializable Kotlin class, so it's possible to share (Kotlin-first) schema with other languages if there is need for.

[mikezliu]

Any idea when we will be able to generate .proto from kotlin files? I'm working on a project that has a front-end (vue), iOS, and we only want to keep one source of truth for proto files, which currently seems like we must use .proto files rather the kotlin data classes.

[qwwdfsad]

Probably around 1.1.0, probably the end of this year

[Marlinski]

Hi, any update about this issue ?

[qwwdfsad]

We have a prototype of .proto file generator that is aiming for the next release: #1255

We do not plan to implement .proto -> Kotlin conversion tho, for that purpose, I'd recommend using third-party solutions such as https://github.com/streem/pbandk

[Marlinski]

I am actually interested in having .proto file generated from my @Serializable data class. This is because I was using serialization-protobuf library but then those data class needed to be sent over the wire to a backend in golang and I unfortunately had to redo all my classes the old way instead to make it work (with .proto and protobuf-lite).

Happy to see the generator for the next release!