selector

var (
	ErrNoAvailableNodes           = errors.New("could not find any available nodes")
	ErrCurrentRegionNotSet        = errors.New("current region cannot be blank")
	ErrCurrentRegionUnknownLatLon = errors.New("unknown lat and lon for the current region")
	ErrSortByNotSet               = errors.New("sort by option cannot be blank")
	ErrAlgorithmNotSet            = errors.New("node selector algorithm option cannot be blank")
	ErrSortByUnknown              = errors.New("unknown sort by option")
	ErrAlgorithmUnknown           = errors.New("unknown node selector algorithm option")
)

var ErrUnsupportedSelector = errors.New("unsupported node selector")