pg_insert_reserve_closed.c (4155B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022, 2024 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_insert_reserve_closed.c 18 * @brief Implementation of the insert_reserve_closed 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_insert_reserve_closed.h" 26 #include "pg_helper.h" 27 #include "pg_reserves_get.h" 28 #include "pg_reserves_update.h" 29 30 enum GNUNET_DB_QueryStatus 31 TEH_PG_insert_reserve_closed ( 32 void *cls, 33 const struct TALER_ReservePublicKeyP *reserve_pub, 34 struct GNUNET_TIME_Timestamp execution_date, 35 const struct TALER_FullPayto receiver_account, 36 const struct TALER_WireTransferIdentifierRawP *wtid, 37 const struct TALER_Amount *amount_with_fee, 38 const struct TALER_Amount *closing_fee, 39 uint64_t close_request_row) 40 { 41 struct PostgresClosure *pg = cls; 42 struct TALER_EXCHANGEDB_Reserve reserve; 43 enum GNUNET_DB_QueryStatus qs; 44 struct TALER_FullPaytoHashP h_payto; 45 46 TALER_full_payto_hash (receiver_account, 47 &h_payto); 48 { 49 struct GNUNET_PQ_QueryParam params[] = { 50 GNUNET_PQ_query_param_auto_from_type (reserve_pub), 51 GNUNET_PQ_query_param_timestamp (&execution_date), 52 GNUNET_PQ_query_param_auto_from_type (wtid), 53 GNUNET_PQ_query_param_auto_from_type (&h_payto), 54 TALER_PQ_query_param_amount (pg->conn, 55 amount_with_fee), 56 TALER_PQ_query_param_amount (pg->conn, 57 closing_fee), 58 GNUNET_PQ_query_param_uint64 (&close_request_row), 59 GNUNET_PQ_query_param_end 60 }; 61 62 PREPARE (pg, 63 "reserves_close_insert", 64 "INSERT INTO reserves_close " 65 "(reserve_pub" 66 ",execution_date" 67 ",wtid" 68 ",wire_target_h_payto" 69 ",amount" 70 ",closing_fee" 71 ",close_request_row" 72 ") VALUES ($1, $2, $3, $4, $5, $6, $7);"); 73 74 qs = GNUNET_PQ_eval_prepared_non_select (pg->conn, 75 "reserves_close_insert", 76 params); 77 } 78 if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT != qs) 79 return qs; 80 81 /* update reserve balance */ 82 reserve.pub = *reserve_pub; 83 if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT != 84 (qs = TEH_PG_reserves_get (cls, 85 &reserve))) 86 { 87 /* Existence should have been checked before we got here... */ 88 GNUNET_break (GNUNET_DB_STATUS_SOFT_ERROR == qs); 89 if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs) 90 qs = GNUNET_DB_STATUS_HARD_ERROR; 91 return qs; 92 } 93 { 94 enum TALER_AmountArithmeticResult ret; 95 96 ret = TALER_amount_subtract (&reserve.balance, 97 &reserve.balance, 98 amount_with_fee); 99 if (ret < 0) 100 { 101 /* The reserve history was checked to make sure there is enough of a balance 102 left before we tried this; however, concurrent operations may have changed 103 the situation by now. We should re-try the transaction. */ 104 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, 105 "Closing of reserve `%s' refused due to balance mismatch. Retrying.\n", 106 TALER_B2S (reserve_pub)); 107 return GNUNET_DB_STATUS_HARD_ERROR; 108 } 109 GNUNET_break (TALER_AAR_RESULT_ZERO == ret); 110 } 111 return TEH_PG_reserves_update (cls, 112 &reserve); 113 }