fix dsnpolicy: Don't change owner ref on update

DNSRecords are currently owned by the DNSPolicy that created them. We
can't just update the ownership on policy change since the new policy
may not be compatible with the current DNSRecord, instead we must
re-create the DNSRecord resource.

This is not ideal, issue to look into changing this
Kuadrant/dns-operator#287

Signed-off-by: Michael Nairn <mnairn@redhat.com>

controllers/effective_dnspolicies_reconciler.go

@@ -138,7 +138,22 @@ func (r *EffectiveDNSPoliciesReconciler) reconcile(ctx context.Context, _ []cont
 
 				existingRecord := existingRecordObj.(*controller.RuntimeObject).Object.(*kuadrantdnsv1alpha1.DNSRecord)
 
-				//Deal with the potential deletion of a record first
+				// Deal with the potential deletion of a record first
+				//
+				// A DNSRecord can't currently support record type changes due to a limitation of the dns operator
+				// https://github.com/Kuadrant/dns-operator/issues/287
+				// If the policy changes, delete the existing record and break out to create the new one.
+				// Note: There should only ever be a single DNSPolicy targeting a unique Gateway/Listener until we
+				// resolve the above issue.
+				pPoliciesLocs := lo.Map(topology.Policies().Parents(existingRecordObj), func(item machinery.Policy, _ int) string {
+					return item.GetLocator()
+				})
+				if !lo.Contains(pPoliciesLocs, policy.GetLocator()) {
+					rLogger.V(1).Info("parent policy has changed, deleting record for listener")
+					r.deleteRecord(ctx, existingRecordObj)
+					break
+				}
+
 				if !hasAttachedRoute || len(desiredRecord.Spec.Endpoints) == 0 {
 					if !hasAttachedRoute {
 						rLogger.V(1).Info("listener has no attached routes, deleting record for listener")
@@ -156,13 +171,11 @@ func (r *EffectiveDNSPoliciesReconciler) reconcile(ctx context.Context, _ []cont
 					break
 				}
 
-				if reflect.DeepEqual(existingRecord.Spec, desiredRecord.Spec) &&
-					reflect.DeepEqual(existingRecord.OwnerReferences, desiredRecord.OwnerReferences) {
+				if reflect.DeepEqual(existingRecord.Spec, desiredRecord.Spec) {
 					rLogger.V(1).Info("dns record is up to date, nothing to do")
 					continue
 				}
 				existingRecord.Spec = desiredRecord.Spec
-				existingRecord.OwnerReferences = desiredRecord.OwnerReferences
 
 				un, err := controller.Destruct(existingRecord)
 				if err != nil {