option for origin data as annotation

api/resmap/resmap.go

@@ -136,6 +136,10 @@ type ResMap interface {
 	// self, then its behavior _cannot_ be merge or replace.
 	AbsorbAll(ResMap) error
 
+	// AnnotateAll annotates all resources in the ResMap with
+	// the provided key value pair.
+	AnnotateAll(key string, value string) error
+
 	// AsYaml returns the yaml form of resources.
 	AsYaml() ([]byte, error)
 

api/resmap/reswrangler.go

@@ -9,6 +9,7 @@ import (
 	"reflect"
 
 	"github.com/pkg/errors"
+	"sigs.k8s.io/kustomize/api/filters/annotations"
 	"sigs.k8s.io/kustomize/api/resource"
 	"sigs.k8s.io/kustomize/api/types"
 	"sigs.k8s.io/kustomize/kyaml/kio"
@@ -531,6 +532,19 @@ func (m *resWrangler) appendReplaceOrMerge(res *resource.Resource) error {
 	}
 }
 
+// AnnotateAll implements ResMap
+func (m *resWrangler) AnnotateAll(key string, value string) error {
+	return m.ApplyFilter(annotations.Filter{
+		Annotations: map[string]string{
+			key: value,
+		},
+		FsSlice: []types.FieldSpec{{
+			Path:               "metadata/annotations",
+			CreateIfNotPresent: true,
+		}},
+	})
+}
+
 // Select returns a list of resources that
 // are selected by a Selector
 func (m *resWrangler) Select(s types.Selector) ([]*resource.Resource, error) {