Not possible to use namespaceSupplier without namespace on @Informer with DefaultInformerNamespaceResolver

[mborst]

Expected Behavior

I would like to specify a namespacesSupplier as the only source of a namespace that an @Informer uses for watching with the current DefaultInformerNamespaceResolver.

Actual Behaviour

The current logic of DefaultInformerNamespaceResolver[1] does always add the literal string RESOLVE_AUTOMATICALLY as an actual namespace if only namespaceSupplier is provided, and it is not possible to provide a namespaceSupplier and ignore whatever it is that namespace is set to (tried "" for example).

[1] https://github.com/micronaut-projects/micronaut-kubernetes/blob/master/kubernetes-informer/src/main/java/io/micronaut/kubernetes/client/informer/resolvers/DefaultInformerNamespaceResolver.java#L92-L104

Steps To Reproduce

1. In a k8s environment
2. With any namespaceSupplier that provides an array of namespaces
3. Run with TRACE logging enabled.
4. See the following logs:

{
  "@timestamp": "2022-08-15T18:50:05.642Z",
  "@version": "1",
  "message": "Namespace: [the-correct-namespace]",
  "logger_name": "io.micronaut.kubernetes.client.DefaultNamespaceResolver",
  "thread_name": "main",
  "level": "DEBUG",
  "level_value": 10000,
}
[...]
{
  "@timestamp": "2022-08-15T18:50:12.879Z",
  "@version": "1",
  "message": "<-- 403  https://10.129.144.1/apis/apps/v1/namespaces/RESOLVE_AUTOMATICALLY/statefulsets?labelSelector=DOESNOTMATTER&resourceVersion=8955394387&timeoutSeconds=496&watch=true 369-byte",
  "logger_name": "io.micronaut.kubernetes.client.OkHttpClientLogging",
  "thread_name": "controller-reflector-io.kubernetes.client.openapi.models.V1StatefulSet-1",
  "level": "TRACE",
  "level_value": 5000
}

Environment Information

• OS: Linux
• JDK17.0.2

Example Application

No response

Version

3.5.3