// validateWeight checks if weight is valid
func validateWeight(weight int32) error {
	if weight < 0 {
		return fmt.Errorf("weight %d < 0", weight)
	}
	return nil
}

// ValidatePercent checks that percent is in range
func ValidatePercent(val int32) error {
	if val < 0 || val > 100 {
		return fmt.Errorf("percentage %v is not in range 0..100", val)
	}
	return nil
}