Support for Free-Form Objects in crd generator

Is your enhancement related to a problem? Please describe

I’m trying to create a spec property as a free-form object from my POJO but it seems that it’s not possible.

I wanted to add a map/object property that accepts any kind of value (string, int, objects…). I’ve tried in these ways

Map<String, ?> config; 
Map<String, Object> config; 

Both generate this schema:

config:
  additionalProperties:
    type: object         
  type: object

My goal is to generate instead

config:
  additionalProperties: {}
  type: object

or

config:
  additionalProperties: true
  type: object

Describe the solution you’d like

Be able to generate a spec like:

config:
  additionalProperties: true
  type: object

Describe alternatives you’ve considered

No response

Additional context

Using latest version

[nicoloboschi]

@andreaTP I’ve sent out a fix, please review https://github.com/fabric8io/kubernetes-client/pull/4642

[nicoloboschi]

It looks like this is a valid workaround

@SchemaFrom(type = JsonNode.class)
Map<String, Object> config;

the generated schema

config:
  x-kubernetes-preserve-unknown-fields: true

this allows me to pass nested objects with any kind of values However the k8s data type validation is basically disabled so I’d retain this feature request since it would be the right way to do it