Introduce k8sdeps package to isolate k8s deps.

pkg/resmap/resmap.go

@@ -21,6 +21,7 @@ import (
 	"bytes"
 	"fmt"
 	"reflect"
+	"sigs.k8s.io/kustomize/pkg/ifc"
 	"sort"
 
 	"github.com/ghodss/yaml"
@@ -151,14 +152,16 @@ func (m ResMap) FilterBy(inputId resource.ResId) ResMap {
 }
 
 // NewResMapFromFiles returns a ResMap given a resource path slice.
-func NewResMapFromFiles(loader loader.Loader, paths []string) (ResMap, error) {
+func NewResMapFromFiles(
+	loader loader.Loader, paths []string,
+	d ifc.Decoder) (ResMap, error) {
 	var result []ResMap
 	for _, path := range paths {
 		content, err := loader.Load(path)
 		if err != nil {
 			return nil, errors.Wrap(err, "Load from path "+path+" failed")
 		}
-		res, err := newResMapFromBytes(content)
+		res, err := newResMapFromBytes(content, d)
 		if err != nil {
 			return nil, internal.Handler(err, path)
 		}
@@ -168,8 +171,8 @@ func NewResMapFromFiles(loader loader.Loader, paths []string) (ResMap, error) {
 }
 
 // newResMapFromBytes decodes a list of objects in byte array format.
-func newResMapFromBytes(b []byte) (ResMap, error) {
-	resources, err := resource.NewResourceSliceFromBytes(b)
+func newResMapFromBytes(b []byte, d ifc.Decoder) (ResMap, error) {
+	resources, err := resource.NewResourceSliceFromBytes(b, d)
 	if err != nil {
 		return nil, err
 	}

pkg/resmap/resmap_test.go

@@ -19,6 +19,7 @@ package resmap
 import (
 	"fmt"
 	"reflect"
+	"sigs.k8s.io/kustomize/pkg/internal/k8sdeps"
 	"testing"
 
 	"sigs.k8s.io/kustomize/pkg/gvk"
@@ -106,7 +107,9 @@ metadata:
 			}),
 	}
 
-	m, _ := NewResMapFromFiles(l, []string{"/home/seans/project/deployment.yaml"})
+	m, _ := NewResMapFromFiles(
+		l, []string{"/home/seans/project/deployment.yaml"},
+		k8sdeps.NewKustDecoder())
 	if len(m) != 2 {
 		t.Fatalf("%#v should contain 2 appResource, but got %d", m, len(m))
 	}
@@ -145,7 +148,7 @@ metadata:
 				},
 			}),
 	}
-	m, err := newResMapFromBytes(encoded)
+	m, err := newResMapFromBytes(encoded, k8sdeps.NewKustDecoder())
 	fmt.Printf("%v\n", m)
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)