Add upstream namespace name as a label to downstream namespaces when reconciled.

Author: joshlreese

internal/downstreamclient/mappednamespace.go

@@ -54,6 +54,9 @@ func (c *mappedNamespaceResourceStrategy) ObjectMetaFromUpstreamObject(ctx conte
 	return metav1.ObjectMeta{
 		Name:      obj.GetName(),
 		Namespace: downstreamNamespaceName,
+		Labels: map[string]string{
+			UpstreamOwnerNamespaceLabel: obj.GetNamespace(),
+		},
 	}, nil
 }
 
@@ -96,6 +99,11 @@ func (c *mappedNamespaceResourceStrategy) ensureDownstreamNamespace(ctx context.
 
 		downstreamNamespace.Labels[UpstreamOwnerClusterNameLabel] = fmt.Sprintf("cluster-%s", strings.ReplaceAll(c.upstreamClusterName, "/", "_"))
 
+		labels := obj.GetLabels()
+		if v, ok := labels[UpstreamOwnerNamespaceLabel]; ok {
+			downstreamNamespace.Labels[UpstreamOwnerNamespaceLabel] = v
+		}
+
 		return nil
 	})
 	if err != nil {