func (h *Handler) GetOfferingIncome(
	tkn, offeringID string) (*uint, error) {
	logger := h.logger.Add("method", "GetOfferingIncome",
		"offeringID", offeringID)

	return h.uintFromQuery(logger, tkn,
		`SELECT SUM(channels.receipt_balance)
		     FROM channels
		   WHERE channels.offering=$1`, offeringID)
}
func (h *Handler) GetOfferingIncome(
	tkn, offeringID string) (*uint, error) {
	logger := h.logger.Add("method", "GetOfferingIncome",
		"offeringID", offeringID)

	return h.uintFromQuery(logger, tkn,
		`SELECT SUM(channels.receipt_balance)
		     FROM channels
		   WHERE channels.offering=$1`, offeringID)
}
// GetOfferingIncome returns total receipt balance from all channels of
// offering with given id.