remove metadata.creationTimestamp field from configMapGenerator

.gitignore

@@ -4,6 +4,7 @@
 *.dll
 *.so
 *.dylib
+kustomize
 
 # Test binary, build with `go test -c`
 *.test

pkg/app/application_test.go

@@ -159,7 +159,6 @@ func TestResources1(t *testing.T) {
 					"annotations": map[string]interface{}{
 						"note": "This is a test annotation",
 					},
-					"creationTimestamp": nil,
 				},
 				"data": map[string]interface{}{
 					"DB_USERNAME": "admin",
@@ -179,7 +178,6 @@ func TestResources1(t *testing.T) {
 					"annotations": map[string]interface{}{
 						"note": "This is a test annotation",
 					},
-					"creationTimestamp": nil,
 				},
 				"type": string(corev1.SecretTypeOpaque),
 				"data": map[string]interface{}{

pkg/commands/testdata/testcase-configmaps/expected.yaml

@@ -6,7 +6,6 @@ data:
 kind: ConfigMap
 metadata:
   annotations: {}
-  creationTimestamp: null
   labels: {}
   name: p1-com1-dhbbm922gd
 ---
@@ -16,6 +15,5 @@ data:
 kind: ConfigMap
 metadata:
   annotations: {}
-  creationTimestamp: null
   labels: {}
   name: p2-com2-c4b8md75k9

pkg/commands/testdata/testcase-multiple-patches-noconflict/expected.yaml

@@ -5,7 +5,6 @@ kind: ConfigMap
 metadata:
   annotations:
     note: This is a test annotation
-  creationTimestamp: null
   labels:
     app: mynginx
     env: staging
@@ -18,7 +17,6 @@ data:
   hello: world
 kind: ConfigMap
 metadata:
-  creationTimestamp: null
   labels:
     env: staging
   name: staging-configmap-in-overlay-k7cbc75tg8

pkg/commands/testdata/testcase-simple/expected.yaml

@@ -7,7 +7,6 @@ kind: ConfigMap
 metadata:
   annotations:
     note: This is a test annotation
-  creationTimestamp: null
   labels:
     app: mungebot
     org: kubernetes
@@ -22,7 +21,6 @@ kind: ConfigMap
 metadata:
   annotations:
     note: This is a test annotation
-  creationTimestamp: null
   labels:
     app: mungebot
     org: kubernetes
@@ -37,7 +35,6 @@ kind: Secret
 metadata:
   annotations:
     note: This is a test annotation
-  creationTimestamp: null
   labels:
     app: mungebot
     org: kubernetes

pkg/commands/testdata/testcase-single-overlay/expected.yaml

@@ -5,7 +5,6 @@ kind: ConfigMap
 metadata:
   annotations:
     note: This is a test annotation
-  creationTimestamp: null
   labels:
     app: mynginx
     env: staging
@@ -18,7 +17,6 @@ data:
   hello: world
 kind: ConfigMap
 metadata:
-  creationTimestamp: null
   labels:
     env: staging
     team: override-foo
@@ -33,7 +31,6 @@ kind: Secret
 metadata:
   annotations:
     note: This is a test annotation
-  creationTimestamp: null
   labels:
     app: mynginx
     env: staging

pkg/commands/testdata/testcase-variable-ref/expected.yaml

@@ -72,7 +72,6 @@ data:
   foo: bar
 kind: ConfigMap
 metadata:
-  creationTimestamp: null
   name: dev-base-test-config-map-b2g2dmd64b
 ---
 apiVersion: v1

pkg/configmapandsecret/configmapfactory.go

@@ -26,6 +26,7 @@ import (
 	"github.com/pkg/errors"
 	"k8s.io/api/core/v1"
 	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/util/validation"
@@ -70,6 +71,7 @@ func objectToUnstructured(in runtime.Object) (*unstructured.Unstructured, error)
 	}
 	var out unstructured.Unstructured
 	err = out.UnmarshalJSON(marshaled)
+	out.SetCreationTimestamp(metav1.Time{})
 	return &out, err
 }
 

pkg/configmapandsecret/configmapfactory_test.go

@@ -50,8 +50,7 @@ func makeUnstructuredEnvConfigMap(name string) *unstructured.Unstructured {
 			"apiVersion": "v1",
 			"kind":       "ConfigMap",
 			"metadata": map[string]interface{}{
-				"name":              name,
-				"creationTimestamp": nil,
+				"name": name,
 			},
 			"data": map[string]interface{}{
 				"DB_USERNAME": "admin",

pkg/resmap/configmap_test.go

@@ -60,8 +60,7 @@ func TestNewFromConfigMaps(t *testing.T) {
 						"apiVersion": "v1",
 						"kind":       "ConfigMap",
 						"metadata": map[string]interface{}{
-							"name":              "envConfigMap",
-							"creationTimestamp": nil,
+							"name": "envConfigMap",
 						},
 						"data": map[string]interface{}{
 							"DB_USERNAME": "admin",
@@ -87,8 +86,7 @@ func TestNewFromConfigMaps(t *testing.T) {
 						"apiVersion": "v1",
 						"kind":       "ConfigMap",
 						"metadata": map[string]interface{}{
-							"name":              "fileConfigMap",
-							"creationTimestamp": nil,
+							"name": "fileConfigMap",
 						},
 						"data": map[string]interface{}{
 							"app-init.ini": `FOO=bar
@@ -114,8 +112,7 @@ BAR=baz
 						"apiVersion": "v1",
 						"kind":       "ConfigMap",
 						"metadata": map[string]interface{}{
-							"name":              "literalConfigMap",
-							"creationTimestamp": nil,
+							"name": "literalConfigMap",
 						},
 						"data": map[string]interface{}{
 							"a": "x",

pkg/resmap/secret_test.go

@@ -66,8 +66,7 @@ func TestNewResMapFromSecretArgs(t *testing.T) {
 				"apiVersion": "v1",
 				"kind":       "Secret",
 				"metadata": map[string]interface{}{
-					"name":              "apple",
-					"creationTimestamp": nil,
+					"name": "apple",
 				},
 				"type": string(corev1.SecretTypeOpaque),
 				"data": map[string]interface{}{
@@ -80,8 +79,7 @@ func TestNewResMapFromSecretArgs(t *testing.T) {
 				"apiVersion": "v1",
 				"kind":       "Secret",
 				"metadata": map[string]interface{}{
-					"name":              "peanuts",
-					"creationTimestamp": nil,
+					"name": "peanuts",
 				},
 				"type": string(corev1.SecretTypeOpaque),
 				"data": map[string]interface{}{

pkg/resource/resource.go

@@ -23,6 +23,7 @@ import (
 
 	"strings"
 
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	"k8s.io/apimachinery/pkg/runtime"
 )
@@ -43,6 +44,8 @@ func NewResourceWithBehavior(obj runtime.Object, b GenerationBehavior) (*Resourc
 	}
 	var u unstructured.Unstructured
 	err = u.UnmarshalJSON(marshaled)
+	// creationTimestamp always 'null', remove it
+	u.SetCreationTimestamp(metav1.Time{})
 	return &Resource{Unstructured: u, b: b}, err
 }