Struct OptionalEnum 

pub struct OptionalEnum;

Recursively restructures JSON Schema objects so that the Option object is returned per k8s CRD schema expectations.

In kube 2.x the schema output behavior for Option<Enum> types changed.

Previously given an enum like:

enum LogLevel {
    Debug,
    Info,
    Error,
}

The following would be generated for Optional:

{ "enum": ["Debug", "Info", "Error"], "type": "string", "nullable": true }

Now, schemars generates anyOf for Option<LogLevel> like:

{
  "anyOf": [
    { "enum": ["Debug", "Info", "Error"], "type": "string" },
    { "enum": [null], "nullable": true }
  ]
}

This transform implementation prevents this specific case from happening.

Trait Implementations

impl Clone for OptionalEnum

fn clone(&self) -> OptionalEnum

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for OptionalEnum

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for OptionalEnum

fn default() -> OptionalEnum

Returns the “default value” for a type.

impl Transform for OptionalEnum

fn transform(&mut self, schema: &mut Schema)

Applies the transform to the given Schema.