select_reserves_in_above_serial_id_by_account.c (5104B)
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/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/taler_pq_lib.h" 22 #include \ 23 "exchange-database/select_reserves_in_above_serial_id_by_account.h" 24 #include "helper.h" 25 26 27 /** 28 * Closure for #reserves_in_serial_helper_cb(). 29 */ 30 struct ReservesInSerialContext 31 { 32 33 /** 34 * Callback to call. 35 */ 36 TALER_EXCHANGEDB_ReserveInCallback cb; 37 38 /** 39 * Closure for @e cb. 40 */ 41 void *cb_cls; 42 43 /** 44 * Plugin context. 45 */ 46 struct TALER_EXCHANGEDB_PostgresContext *pg; 47 48 /** 49 * Status code, set to #GNUNET_SYSERR on hard errors. 50 */ 51 enum GNUNET_GenericReturnValue status; 52 }; 53 54 55 /** 56 * Helper function to be called with the results of a SELECT statement 57 * that has returned @a num_results results. 58 * 59 * @param cls closure of type `struct ReservesInSerialContext` 60 * @param result the postgres result 61 * @param num_results the number of results in @a result 62 */ 63 static void 64 reserves_in_serial_helper_cb (void *cls, 65 PGresult *result, 66 unsigned int num_results) 67 { 68 struct ReservesInSerialContext *risc = cls; 69 struct TALER_EXCHANGEDB_PostgresContext *pg = risc->pg; 70 71 for (unsigned int i = 0; i<num_results; i++) 72 { 73 struct TALER_ReservePublicKeyP reserve_pub; 74 struct TALER_Amount credit; 75 struct TALER_FullPayto sender_account_details; 76 struct GNUNET_TIME_Timestamp execution_date; 77 uint64_t rowid; 78 uint64_t wire_reference; 79 struct GNUNET_PQ_ResultSpec rs[] = { 80 GNUNET_PQ_result_spec_auto_from_type ("reserve_pub", 81 &reserve_pub), 82 GNUNET_PQ_result_spec_uint64 ("wire_reference", 83 &wire_reference), 84 TALER_PQ_RESULT_SPEC_AMOUNT ("credit", 85 &credit), 86 GNUNET_PQ_result_spec_timestamp ("execution_date", 87 &execution_date), 88 GNUNET_PQ_result_spec_string ("sender_account_details", 89 &sender_account_details.full_payto), 90 GNUNET_PQ_result_spec_uint64 ("reserve_in_serial_id", 91 &rowid), 92 GNUNET_PQ_result_spec_end 93 }; 94 enum GNUNET_GenericReturnValue ret; 95 96 if (GNUNET_OK != 97 GNUNET_PQ_extract_result (result, 98 rs, 99 i)) 100 { 101 GNUNET_break (0); 102 risc->status = GNUNET_SYSERR; 103 return; 104 } 105 ret = risc->cb (risc->cb_cls, 106 rowid, 107 &reserve_pub, 108 &credit, 109 sender_account_details, 110 wire_reference, 111 execution_date); 112 GNUNET_PQ_cleanup_result (rs); 113 if (GNUNET_OK != ret) 114 break; 115 } 116 } 117 118 119 enum GNUNET_DB_QueryStatus 120 TALER_TALER_EXCHANGEDB_select_reserves_in_above_serial_id_by_account ( 121 struct TALER_EXCHANGEDB_PostgresContext *pg, 122 const char *account_name, 123 uint64_t serial_id, 124 TALER_EXCHANGEDB_ReserveInCallback cb, 125 void *cb_cls) 126 { 127 struct GNUNET_PQ_QueryParam params[] = { 128 GNUNET_PQ_query_param_uint64 (&serial_id), 129 GNUNET_PQ_query_param_string (account_name), 130 GNUNET_PQ_query_param_end 131 }; 132 struct ReservesInSerialContext risc = { 133 .cb = cb, 134 .cb_cls = cb_cls, 135 .pg = pg, 136 .status = GNUNET_OK 137 }; 138 enum GNUNET_DB_QueryStatus qs; 139 140 PREPARE (pg, 141 "select_reserves_in_above_serial_id_by_account", 142 "SELECT" 143 " reserves.reserve_pub" 144 ",wire_reference" 145 ",credit" 146 ",execution_date" 147 ",wt.payto_uri AS sender_account_details" 148 ",reserve_in_serial_id" 149 " FROM reserves_in" 150 " JOIN reserves " 151 " USING (reserve_pub)" 152 " JOIN wire_targets wt" 153 " ON (wire_source_h_payto = wire_target_h_payto)" 154 " WHERE reserve_in_serial_id>=$1" 155 " AND exchange_account_section=$2" 156 " ORDER BY reserve_in_serial_id ASC;"); 157 qs = GNUNET_PQ_eval_prepared_multi_select ( 158 pg->conn, 159 "select_reserves_in_above_serial_id_by_account", 160 params, 161 &reserves_in_serial_helper_cb, 162 &risc); 163 if (GNUNET_OK != risc.status) 164 return GNUNET_DB_STATUS_HARD_ERROR; 165 return qs; 166 }