Support for enum within an array

[braghettos]

Hi everyone,

I was looking for a way to support the following json schema:

          "properties": {
            "allowedResources": {
              "description": "the list of resources that are allowed to be children of this widget or referenced by it",
              "type": "array",
              "items": {
                "type": "string",
                "enum": [
                  "barcharts",
                  "buttons",
                  "eventlists",
                  "filters",
                  "flowcharts",
                  "forms",
                  "linecharts",
                  "markdowns",
                  "panels",
                  "paragraphs",
                  "piecharts",
                  "tables",
                  "tablists",
                  "yamlviewers"
                ]
              }
            }

Is there a marker that allows this use case?

Thanks for any feedback!

[JoelSpeed]

You should be able to create a string type alias and then use that as the list element type

// +kubebuilder:validation:Enum:=A;B;C
type Foo string

...
// foos is a list of Foos.
// Valid options are A, B and C.
Foos []Foo `json:"foo,omitempty"

[braghettos]

@JoelSpeed is there another way to avoid alias in code? I would like to avoid this manual approach.

[JoelSpeed]

Not presently that I'm aware of no. In upstream/core Kube types, all enums are type aliases like this. It's useful when coding, for example, when you build a switch, linters can check you've handled all potential values