Validate YAML string, which itself is YAML

[hansbogert]

It's probably asked before, but I think use-case is missing from the docs, AFAICT.

Is it possible to have a k8s yaml as the following:

...
spec:
  values: |
    annotations:
      key: "format, which, should, have, commas"

I'd like to verify .spec.values.annotations.key, however as you noticed, the values is a string, not an object.

Of course in the above the first question is, why is values a string in the first place? Unfortunately this seems to be common in the kubernetes/helm ecosystem. At least in my case, in the short-term, it's out of my control to go and convert this values to an object.

Can Cuelang help in this case and help validate that the string key has a comma separated text?

[hansbogert]

It's probably asked before, but I think use-case is missing from the docs, AFAICT.

Well I guess I Can't Tell that much, it's in the docs, though perhaps not explicit with the pipe-sign in the yaml.

For search engine stragglers:

import "encoding/yaml"

spec: values: yaml.Validate(#Annotations)

#Annotations:{
  annotations: [string]: =~ "^(\\w+)(,\\s*\\w+)*$"
}

$ cue  vet foo.yaml foo.cue
[exit code 0]