Add APIs for computing status based on fetching resource info from a

cluster

kstatus/status/core.go

@@ -6,8 +6,8 @@ package status
 import (
 	"fmt"
 
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	corev1 "sigs.k8s.io/kustomize/pseudo/k8s/api/core/v1"
-	"sigs.k8s.io/kustomize/pseudo/k8s/apimachinery/pkg/apis/meta/v1/unstructured"
 )
 
 // GetConditionsFn defines the signature for functions to compute the
@@ -36,6 +36,8 @@ const (
 	tooFewAvailable = "LessAvailable"
 	tooFewUpdated   = "LessUpdated"
 	tooFewReplicas  = "LessReplicas"
+
+	onDeleteUpdateStrategy = "OnDelete"
 )
 
 // GetLegacyConditionsFn returns a function that can compute the status for the
@@ -71,7 +73,7 @@ func stsConditions(u *unstructured.Unstructured) (*Result, error) {
 
 	// updateStrategy==ondelete is a user managed statefulset.
 	updateStrategy := GetStringField(obj, ".spec.updateStrategy.type", "")
-	if updateStrategy == "ondelete" {
+	if updateStrategy == onDeleteUpdateStrategy {
 		return &Result{
 			Status:     CurrentStatus,
 			Message:    "StatefulSet is using the ondelete update strategy",