Add builtin namespace transformer plugin

plugin/builtin/NamespaceTransformer.go

@@ -0,0 +1,32 @@
+// Code generated by pluginator on NamespaceTransformer; DO NOT EDIT.
+package builtin
+
+import (
+	"sigs.k8s.io/kustomize/pkg/ifc"
+	"sigs.k8s.io/kustomize/pkg/resmap"
+	"sigs.k8s.io/kustomize/pkg/transformers"
+	"sigs.k8s.io/kustomize/pkg/transformers/config"
+	"sigs.k8s.io/yaml"
+)
+
+// Change or set the namespace of non-cluster level resources.
+type NamespaceTransformerPlugin struct {
+	Namespace  string             `json:"namespace,omitempty" yaml:"namespace,omitempty"`
+	FieldSpecs []config.FieldSpec `json:"fieldSpecs,omitempty" yaml:"fieldSpecs,omitempty"`
+}
+
+func NewNamespaceTransformerPlugin() *NamespaceTransformerPlugin {
+	return &NamespaceTransformerPlugin{}
+}
+
+func (p *NamespaceTransformerPlugin) Config(
+	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	p.Namespace = ""
+	p.FieldSpecs = nil
+	return yaml.Unmarshal(c, p)
+}
+
+func (p *NamespaceTransformerPlugin) Transform(m resmap.ResMap) error {
+	return transformers.NewNamespaceTransformer(
+		p.Namespace, p.FieldSpecs).Transform(m)
+}