Fix for - Generate policy fails if trigger resource name exceed 58 ch…

…aracters (#1631)

* seperated generated-by label

Signed-off-by: NoSkillGirl <singhpooja240393@gmail.com>

* restricted label to 63 characters

Signed-off-by: NoSkillGirl <singhpooja240393@gmail.com>

* seperated labels and restriced char count to 63

Signed-off-by: NoSkillGirl <singhpooja240393@gmail.com>

pkg/generate/labels.go

@@ -41,12 +41,24 @@ func managedBy(labels map[string]string) {
 }
 
 func generatedBy(labels map[string]string, triggerResource unstructured.Unstructured) {
-	key := "kyverno.io/generated-by"
-	value := fmt.Sprintf("%s-%s-%s", triggerResource.GetKind(), triggerResource.GetNamespace(), triggerResource.GetName())
+	keyKind := "kyverno.io/generated-by-kind"
+	keyNamespace := "kyverno.io/generated-by-namespace"
+	keyName := "kyverno.io/generated-by-name"
+
+	checkGeneratedBy(labels, keyKind, triggerResource.GetKind())
+	checkGeneratedBy(labels, keyNamespace, triggerResource.GetNamespace())
+	checkGeneratedBy(labels, keyName, triggerResource.GetName())
+}
+
+func checkGeneratedBy(labels map[string]string, key, value string) {
+	if len(value) > 63 {
+		value = value[0:63]
+	}
+
 	val, ok := labels[key]
 	if ok {
 		if val != value {
-			log.Log.Info(fmt.Sprintf("resource generated by %s, kyverno wont over-ride the label", val))
+			log.Log.Info(fmt.Sprintf("kyverno wont over-ride the label %s", key))
 			return
 		}
 	}