}

// namespaceEvent handles a namespace add/update. Gateway's can select routes by label, so we need to handle
// when the labels change.
// Note: we don't handle delete as a delete would also clean up any relevant gateway-api types which will
// trigger its own event.
func (c *Controller) namespaceEvent(oldNs, newNs *corev1.Namespace) {

	AllowedReferences AllowedReferences
	// ReferencedNamespaceKeys stores the label key of all namespace selections. This allows us to quickly
	// determine if a namespace update could have impacted any Gateways. See namespaceEvent.
	ReferencedNamespaceKeys sets.String

	// ResourceReferences stores all resources referenced by gateway-api resources. This allows us to quickly
	// determine if a resource update could have impacted any Gateways.