userInfo := attr.GetUserInfo()
	if userInfo == nil {
		return ""
	}
	return userInfo.GetName()
}

// getSourceAndObjectKey returns a cache key that is based on the source+object of the event
func getSourceAndObjectKey(attr admission.Attributes) string {
	object := attr.GetObject()
	if object == nil {
		return ""
	}
	event, ok := object.(*api.Event)
	if !ok {