pg_do_refund.c (3507B)
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 exchangedb/pg_do_refund.c 18 * @brief Implementation of the do_refund function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "taler/platform.h" 22 #include "taler/taler_error_codes.h" 23 #include "taler/taler_dbevents.h" 24 #include "taler/taler_pq_lib.h" 25 #include "pg_do_refund.h" 26 #include "pg_helper.h" 27 #include "pg_compute_shard.h" 28 29 30 enum GNUNET_DB_QueryStatus 31 TEH_PG_do_refund ( 32 void *cls, 33 const struct TALER_EXCHANGEDB_Refund *refund, 34 const struct TALER_Amount *deposit_fee, 35 uint64_t known_coin_id, 36 bool *not_found, 37 bool *refund_ok, 38 bool *gone, 39 bool *conflict) 40 { 41 struct PostgresClosure *pg = cls; 42 uint64_t deposit_shard = TEH_PG_compute_shard (&refund->details.merchant_pub); 43 struct TALER_Amount amount_without_fee; 44 struct GNUNET_PQ_QueryParam params[] = { 45 TALER_PQ_query_param_amount (pg->conn, 46 &refund->details.refund_amount), 47 TALER_PQ_query_param_amount (pg->conn, 48 &amount_without_fee), 49 TALER_PQ_query_param_amount (pg->conn, 50 deposit_fee), 51 GNUNET_PQ_query_param_auto_from_type (&refund->details.h_contract_terms), 52 GNUNET_PQ_query_param_uint64 (&refund->details.rtransaction_id), 53 GNUNET_PQ_query_param_uint64 (&deposit_shard), 54 GNUNET_PQ_query_param_uint64 (&known_coin_id), 55 GNUNET_PQ_query_param_auto_from_type (&refund->coin.coin_pub), 56 GNUNET_PQ_query_param_auto_from_type (&refund->details.merchant_pub), 57 GNUNET_PQ_query_param_auto_from_type (&refund->details.merchant_sig), 58 GNUNET_PQ_query_param_end 59 }; 60 struct GNUNET_PQ_ResultSpec rs[] = { 61 GNUNET_PQ_result_spec_bool ("not_found", 62 not_found), 63 GNUNET_PQ_result_spec_bool ("refund_ok", 64 refund_ok), 65 GNUNET_PQ_result_spec_bool ("gone", 66 gone), 67 GNUNET_PQ_result_spec_bool ("conflict", 68 conflict), 69 GNUNET_PQ_result_spec_end 70 }; 71 72 if (0 > 73 TALER_amount_subtract (&amount_without_fee, 74 &refund->details.refund_amount, 75 &refund->details.refund_fee)) 76 { 77 GNUNET_break (0); 78 return GNUNET_DB_STATUS_HARD_ERROR; 79 } 80 PREPARE (pg, 81 "call_refund", 82 "SELECT " 83 " out_not_found AS not_found" 84 ",out_refund_ok AS refund_ok" 85 ",out_gone AS gone" 86 ",out_conflict AS conflict" 87 " FROM exchange_do_refund" 88 " ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10);"); 89 return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 90 "call_refund", 91 params, 92 rs); 93 }