serialize from go code to pkl template

[contini-aron]

As of my understanding the go integration is perfectly capable of generating go code from a pkl template, however the serialization of go struct into a pkl template isnt a thing

that in my opinion would be really useful, ill provide an example on how and why

im currently writing a k8 operator and the custom CR (a yaml file) is defined by go structs with tags
e.g. of a single struct

type Deployment struct {
  ReplicaCount int16 `json:"replicaCount"`
}

and the pkl that would generate similar go code is

class Deployment {
  replicaCount: Int16
}

this would allow to use the pkl template to generate the yaml for the CR while having the amazing benefits of pkl lang (type checking, custom error sintaxes... )

why not using the pkl to go code generation in this case? because the struct might need as in this case the tags for json serialization.

[holzensp]

Given a Pkl -> Go generator, "inverting" it to go Go -> Pkl isn't any easier than starting from scratch. You'd need to parse the go structs reliably. That said, if you're not running the Go code generation, because you need extra StructTags, why don't you use StructTags as documented here?

[contini-aron]

thank you, it was a feature i think i missed while reading the docs.

[holzensp]

Does that mean your issue is solved?

[contini-aron]

it does not entirely alone solve the problem to adapt the code it generates to the operator sdk types for cr generation but it is doable with some adaptation.

however i would still advocate for the feature of serialization it would be a nice feature :)
not by any means a high prio feat but a nice to have one

[bioball]

In lieu of this, you can maybe try going Go > JSON Schema > Pkl

Go to JSON Schema: https://github.com/invopop/jsonschema
JSON Schema to Pkl: https://pkl-lang.org/package-docs/pkg.pkl-lang.org/pkl-pantry/org.json_schema.contrib/current/generate/index.html

[contini-aron]

In lieu of this, you can maybe try going Go > JSON Schema > Pkl

Go to JSON Schema: https://github.com/invopop/jsonschema JSON Schema to Pkl: https://pkl-lang.org/package-docs/pkg.pkl-lang.org/pkl-pantry/org.json_schema.contrib/current/generate/index.html

thanks ill try it :)