♻️ Make local-config annotation specific

kpt only does a function at once, and honors the removal
of the `config.kuberntes.io/local-config` marked resources.

In consequence, we cannot use `config.kuberntes.io/local-config`
anymore to inject resources. We replace it with
 `config.kaweezle.com/local-config`.

`prune-local` is not a workaround anymore  but becomes
a feature. The README needs to be adapted in consequence.

main.go

@@ -12,7 +12,6 @@ import (
 	"sigs.k8s.io/kustomize/kyaml/errors"
 	"sigs.k8s.io/kustomize/kyaml/fn/framework"
 	"sigs.k8s.io/kustomize/kyaml/fn/framework/command"
-	"sigs.k8s.io/kustomize/kyaml/kio/filters"
 	"sigs.k8s.io/kustomize/kyaml/resid"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
@@ -85,11 +84,6 @@ func main() {
 				if err != nil {
 					return errors.WrapPrefixf(err, "Removing local from keep-local resources")
 				}
-				filter := &filters.IsLocalConfig{IncludeLocalConfig: false, ExcludeNonLocalConfig: false}
-				err = rl.Filter(filter)
-				if err != nil {
-					return errors.WrapPrefixf(err, "filtering local configs")
-				}
 			}
 
 		} else {

pkg/utils/constants.go

@@ -23,7 +23,7 @@ const (
 	FunctionAnnotationFunction = ConfigurationAnnotationDomain + "/function"
 
 	// true when the resource is part of the local configuration
-	FunctionAnnotationLocalConfig = ConfigurationAnnotationDomain + "/local-config"
+	FunctionAnnotationLocalConfig = LocalConfigurationAnnotationDomain + "/local-config"
 
 	// Setting to true means we want this function configuration to be injected as a
 	// local configuration resource (local-config)

pkg/utils/utils.go

@@ -3,7 +3,6 @@ package utils
 import (
 	"sigs.k8s.io/kustomize/api/resource"
 	"sigs.k8s.io/kustomize/kyaml/kio"
-	"sigs.k8s.io/kustomize/kyaml/kio/filters"
 	"sigs.k8s.io/kustomize/kyaml/kio/kioutil"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
@@ -40,7 +39,7 @@ func RemoveBuildAnnotations(r *resource.Resource) {
 func MakeResourceLocal(r *yaml.RNode) error {
 	annotations := r.GetAnnotations()
 
-	annotations[filters.LocalConfigAnnotation] = "true"
+	annotations[FunctionAnnotationLocalConfig] = "true"
 	if _, ok := annotations[kioutil.PathAnnotation]; !ok {
 		annotations[kioutil.PathAnnotation] = ".generated.yaml"
 	}
@@ -54,6 +53,7 @@ func MakeResourceLocal(r *yaml.RNode) error {
 }
 
 func unLocal(list []*yaml.RNode) ([]*yaml.RNode, error) {
+	output := []*yaml.RNode{}
 	for _, r := range list {
 		annotations := r.GetAnnotations()
 		if _, ok := annotations[FunctionAnnotationKeepLocal]; ok {
@@ -70,9 +70,14 @@ func unLocal(list []*yaml.RNode) ([]*yaml.RNode, error) {
 				delete(annotations, FunctionAnnotationIndex)
 			}
 			r.SetAnnotations(annotations)
+			output = append(output, r)
+		} else {
+			if _, ok := annotations[FunctionAnnotationLocalConfig]; !ok {
+				output = append(output, r)
+			}
 		}
 	}
-	return list, nil
+	return output, nil
 }
 
 var UnLocal kio.FilterFunc = unLocal