pg_increase_refund.h (2365B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022 Taler Systems SA 4 5 TALER is free software; you can redistribute it and/or modify it under the 6 terms of the GNU General Public License as published by the Free Software 7 Foundation; either version 3, or (at your option) any later version. 8 9 TALER is distributed in the hope that it will be useful, but WITHOUT ANY 10 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR 11 A PARTICULAR PURPOSE. See the GNU General Public License for more details. 12 13 You should have received a copy of the GNU General Public License along with 14 TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> 15 */ 16 /** 17 * @file backenddb/pg_increase_refund.h 18 * @brief implementation of the increase_refund function for Postgres 19 * @author Christian Grothoff 20 */ 21 #ifndef PG_INCREASE_REFUND_H 22 #define PG_INCREASE_REFUND_H 23 24 #include <taler/taler_util.h> 25 #include <taler/taler_json_lib.h> 26 #include "taler_merchantdb_plugin.h" 27 28 29 /** 30 * Function called when some backoffice staff decides to award or 31 * increase the refund on an existing contract. This function 32 * MUST be called from within a transaction scope setup by the 33 * caller as it executes mulrewardle SQL statements. 34 * 35 * @param cls closure 36 * @param instance_id instance identifier 37 * @param order_id the order to increase the refund for 38 * @param refund maximum refund to return to the customer for this contract 39 * @param olc function to call to obtain legal refund 40 * limits per exchange, NULL for no limits 41 * @param olc_cls closure for @a olc 42 * @param reason 0-terminated UTF-8 string giving the reason why the customer 43 * got a refund (free form, business-specific) 44 * @return transaction status 45 * #GNUNET_DB_STATUS_SUCCESS_NO_RESULTS if @a refund is ABOVE the amount we 46 * were originally paid and thus the transaction failed; 47 * #GNUNET_DB_STATUS_SUCCESS_ONE_RESULT if the request is valid, 48 * regardless of whether it actually increased the refund beyond 49 * what was already refunded (idempotency!) 50 */ 51 enum TALER_MERCHANTDB_RefundStatus 52 TMH_PG_increase_refund ( 53 void *cls, 54 const char *instance_id, 55 const char *order_id, 56 const struct TALER_Amount *refund, 57 TALER_MERCHANTDB_OperationLimitCallback olc, 58 void *olc_cls, 59 const char *reason); 60 61 62 #endif