From 72c7db39f2b087dd1c75658cf580489a35279122 Mon Sep 17 00:00:00 2001
From: jregan <jregan@google.com>
Date: Fri, 24 Apr 2020 15:53:53 -0700
Subject: [PATCH] Migrate the label transformer.

---
 api/builtins/LabelTransformer.go              | 19 +++++++++++--------
 .../labeltransformer/LabelTransformer.go      | 19 +++++++++++--------
 plugin/builtin/labeltransformer/go.mod        |  1 +
 3 files changed, 23 insertions(+), 16 deletions(-)

diff --git a/api/builtins/LabelTransformer.go b/api/builtins/LabelTransformer.go
index 88df34561..eaa7d8a81 100644
--- a/api/builtins/LabelTransformer.go
+++ b/api/builtins/LabelTransformer.go
@@ -4,9 +4,10 @@
 package builtins
 
 import (
+	"sigs.k8s.io/kustomize/api/filters/labels"
 	"sigs.k8s.io/kustomize/api/resmap"
-	"sigs.k8s.io/kustomize/api/transform"
 	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/filtersutil"
 	"sigs.k8s.io/yaml"
 )
 
@@ -24,14 +25,16 @@ func (p *LabelTransformerPlugin) Config(
 }
 
 func (p *LabelTransformerPlugin) Transform(m resmap.ResMap) error {
-	t, err := transform.NewMapTransformer(
-		p.FieldSpecs,
-		p.Labels,
-	)
-	if err != nil {
-		return err
+	for _, r := range m.Resources() {
+		err := filtersutil.ApplyToJSON(labels.Filter{
+			Labels:  p.Labels,
+			FsSlice: p.FieldSpecs,
+		}, r.Kunstructured)
+		if err != nil {
+			return err
+		}
 	}
-	return t.Transform(m)
+	return nil
 }
 
 func NewLabelTransformerPlugin() resmap.TransformerPlugin {
diff --git a/plugin/builtin/labeltransformer/LabelTransformer.go b/plugin/builtin/labeltransformer/LabelTransformer.go
index df852c497..93697719e 100644
--- a/plugin/builtin/labeltransformer/LabelTransformer.go
+++ b/plugin/builtin/labeltransformer/LabelTransformer.go
@@ -5,9 +5,10 @@
 package main
 
 import (
+	"sigs.k8s.io/kustomize/api/filters/labels"
 	"sigs.k8s.io/kustomize/api/resmap"
-	"sigs.k8s.io/kustomize/api/transform"
 	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/filtersutil"
 	"sigs.k8s.io/yaml"
 )
 
@@ -28,12 +29,14 @@ func (p *plugin) Config(
 }
 
 func (p *plugin) Transform(m resmap.ResMap) error {
-	t, err := transform.NewMapTransformer(
-		p.FieldSpecs,
-		p.Labels,
-	)
-	if err != nil {
-		return err
+	for _, r := range m.Resources() {
+		err := filtersutil.ApplyToJSON(labels.Filter{
+			Labels:  p.Labels,
+			FsSlice: p.FieldSpecs,
+		}, r.Kunstructured)
+		if err != nil {
+			return err
+		}
 	}
-	return t.Transform(m)
+	return nil
 }
diff --git a/plugin/builtin/labeltransformer/go.mod b/plugin/builtin/labeltransformer/go.mod
index 48b93a9e4..e1eeca9c3 100644
--- a/plugin/builtin/labeltransformer/go.mod
+++ b/plugin/builtin/labeltransformer/go.mod
@@ -4,6 +4,7 @@ go 1.13
 
 require (
 	sigs.k8s.io/kustomize/api v0.3.1
+	sigs.k8s.io/kustomize/kyaml v0.1.5
 	sigs.k8s.io/yaml v1.1.0
 )