pg_select_reserves_in_above_serial_id_by_account.c (5142B)
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_select_reserves_in_above_serial_id_by_account.c 18 * @brief Implementation of the select_reserves_in_above_serial_id_by_account 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_select_reserves_in_above_serial_id_by_account.h" 26 #include "pg_helper.h" 27 28 29 /** 30 * Closure for #reserves_in_serial_helper_cb(). 31 */ 32 struct ReservesInSerialContext 33 { 34 35 /** 36 * Callback to call. 37 */ 38 TALER_EXCHANGEDB_ReserveInCallback cb; 39 40 /** 41 * Closure for @e cb. 42 */ 43 void *cb_cls; 44 45 /** 46 * Plugin context. 47 */ 48 struct PostgresClosure *pg; 49 50 /** 51 * Status code, set to #GNUNET_SYSERR on hard errors. 52 */ 53 enum GNUNET_GenericReturnValue status; 54 }; 55 56 57 /** 58 * Helper function to be called with the results of a SELECT statement 59 * that has returned @a num_results results. 60 * 61 * @param cls closure of type `struct ReservesInSerialContext` 62 * @param result the postgres result 63 * @param num_results the number of results in @a result 64 */ 65 static void 66 reserves_in_serial_helper_cb (void *cls, 67 PGresult *result, 68 unsigned int num_results) 69 { 70 struct ReservesInSerialContext *risc = cls; 71 struct PostgresClosure *pg = risc->pg; 72 73 for (unsigned int i = 0; i<num_results; i++) 74 { 75 struct TALER_ReservePublicKeyP reserve_pub; 76 struct TALER_Amount credit; 77 struct TALER_FullPayto sender_account_details; 78 struct GNUNET_TIME_Timestamp execution_date; 79 uint64_t rowid; 80 uint64_t wire_reference; 81 struct GNUNET_PQ_ResultSpec rs[] = { 82 GNUNET_PQ_result_spec_auto_from_type ("reserve_pub", 83 &reserve_pub), 84 GNUNET_PQ_result_spec_uint64 ("wire_reference", 85 &wire_reference), 86 TALER_PQ_RESULT_SPEC_AMOUNT ("credit", 87 &credit), 88 GNUNET_PQ_result_spec_timestamp ("execution_date", 89 &execution_date), 90 GNUNET_PQ_result_spec_string ("sender_account_details", 91 &sender_account_details.full_payto), 92 GNUNET_PQ_result_spec_uint64 ("reserve_in_serial_id", 93 &rowid), 94 GNUNET_PQ_result_spec_end 95 }; 96 enum GNUNET_GenericReturnValue ret; 97 98 if (GNUNET_OK != 99 GNUNET_PQ_extract_result (result, 100 rs, 101 i)) 102 { 103 GNUNET_break (0); 104 risc->status = GNUNET_SYSERR; 105 return; 106 } 107 ret = risc->cb (risc->cb_cls, 108 rowid, 109 &reserve_pub, 110 &credit, 111 sender_account_details, 112 wire_reference, 113 execution_date); 114 GNUNET_PQ_cleanup_result (rs); 115 if (GNUNET_OK != ret) 116 break; 117 } 118 } 119 120 121 enum GNUNET_DB_QueryStatus 122 TEH_PG_select_reserves_in_above_serial_id_by_account ( 123 void *cls, 124 const char *account_name, 125 uint64_t serial_id, 126 TALER_EXCHANGEDB_ReserveInCallback cb, 127 void *cb_cls) 128 { 129 struct PostgresClosure *pg = cls; 130 struct GNUNET_PQ_QueryParam params[] = { 131 GNUNET_PQ_query_param_uint64 (&serial_id), 132 GNUNET_PQ_query_param_string (account_name), 133 GNUNET_PQ_query_param_end 134 }; 135 struct ReservesInSerialContext risc = { 136 .cb = cb, 137 .cb_cls = cb_cls, 138 .pg = pg, 139 .status = GNUNET_OK 140 }; 141 enum GNUNET_DB_QueryStatus qs; 142 143 PREPARE (pg, 144 "select_reserves_in_above_serial_id_by_account", 145 "SELECT" 146 " reserves.reserve_pub" 147 ",wire_reference" 148 ",credit" 149 ",execution_date" 150 ",wt.payto_uri AS sender_account_details" 151 ",reserve_in_serial_id" 152 " FROM reserves_in" 153 " JOIN reserves " 154 " USING (reserve_pub)" 155 " JOIN wire_targets wt" 156 " ON (wire_source_h_payto = wire_target_h_payto)" 157 " WHERE reserve_in_serial_id>=$1" 158 " AND exchange_account_section=$2" 159 " ORDER BY reserve_in_serial_id ASC;"); 160 qs = GNUNET_PQ_eval_prepared_multi_select ( 161 pg->conn, 162 "select_reserves_in_above_serial_id_by_account", 163 params, 164 &reserves_in_serial_helper_cb, 165 &risc); 166 if (GNUNET_OK != risc.status) 167 return GNUNET_DB_STATUS_HARD_ERROR; 168 return qs; 169 }