const MaxLength = 31

var ErrEmptyName = errors.New("object name cannot be empty")

var ErrNameExceedsMaxLength = fmt.Errorf("object name exceeds the maximum allowed length of %d characters", MaxLength)

var ErrNotSupported = errors.New("nfacct sub-system not available")

var ErrObjectAlreadyExists = errors.New("object already exists")

var ErrObjectNotFound = errors.New("object not found")

var ErrUnexpected = errors.New("unexpected error")

type Counter struct {
	Name    string
	Packets uint64
	Bytes   uint64
}

type Interface interface {
	// Ensure checks the existence of a nfacct counter with the provided name and creates it if absent.
	Ensure(name string) error
	// Add creates a nfacct counter with the given name, returning an error if it already exists.
	Add(name string) error
	// Get retrieves the nfacct counter with the specified name, returning an error if it doesn't exist.
	Get(name string) (*Counter, error)
	// List retrieves nfacct counters, it could receive all counters or a subset of them with an unix.EINTR error.
	List() ([]*Counter, error)
}