select_reserve_closed_above_serial_id.c (5138B)
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 select_reserve_closed_above_serial_id.c 18 * @brief Low-level (statement-level) Postgres database access for the exchange 19 * @author Christian Grothoff 20 */ 21 #include "taler/taler_pq_lib.h" 22 #include "exchange-database/select_reserve_closed_above_serial_id.h" 23 #include "helper.h" 24 25 /** 26 * Closure for #reserve_closed_serial_helper_cb(). 27 */ 28 struct ReserveClosedSerialContext 29 { 30 31 /** 32 * Callback to call. 33 */ 34 TALER_EXCHANGEDB_ReserveClosedCallback cb; 35 36 /** 37 * Closure for @e cb. 38 */ 39 void *cb_cls; 40 41 /** 42 * Plugin's context. 43 */ 44 struct TALER_EXCHANGEDB_PostgresContext *pg; 45 46 /** 47 * Status code, set to #GNUNET_SYSERR on hard errors. 48 */ 49 enum GNUNET_GenericReturnValue status; 50 }; 51 52 53 /** 54 * Helper function to be called with the results of a SELECT statement 55 * that has returned @a num_results results. 56 * 57 * @param cls closure of type `struct ReserveClosedSerialContext` 58 * @param result the postgres result 59 * @param num_results the number of results in @a result 60 */ 61 static void 62 reserve_closed_serial_helper_cb (void *cls, 63 PGresult *result, 64 unsigned int num_results) 65 { 66 struct ReserveClosedSerialContext *rcsc = cls; 67 struct TALER_EXCHANGEDB_PostgresContext *pg = rcsc->pg; 68 69 for (unsigned int i = 0; i<num_results; i++) 70 { 71 uint64_t rowid; 72 struct TALER_ReservePublicKeyP reserve_pub; 73 struct TALER_FullPayto receiver_account; 74 struct TALER_WireTransferIdentifierRawP wtid; 75 struct TALER_Amount amount_with_fee; 76 struct TALER_Amount closing_fee; 77 struct GNUNET_TIME_Timestamp execution_date; 78 uint64_t close_request_row; 79 struct GNUNET_PQ_ResultSpec rs[] = { 80 GNUNET_PQ_result_spec_uint64 ("close_uuid", 81 &rowid), 82 GNUNET_PQ_result_spec_auto_from_type ("reserve_pub", 83 &reserve_pub), 84 GNUNET_PQ_result_spec_timestamp ("execution_date", 85 &execution_date), 86 GNUNET_PQ_result_spec_auto_from_type ("wtid", 87 &wtid), 88 GNUNET_PQ_result_spec_string ("receiver_account", 89 &receiver_account.full_payto), 90 TALER_PQ_RESULT_SPEC_AMOUNT ("amount", 91 &amount_with_fee), 92 TALER_PQ_RESULT_SPEC_AMOUNT ("closing_fee", 93 &closing_fee), 94 GNUNET_PQ_result_spec_uint64 ("close_request_row", 95 &close_request_row), 96 GNUNET_PQ_result_spec_end 97 }; 98 enum GNUNET_GenericReturnValue ret; 99 100 if (GNUNET_OK != 101 GNUNET_PQ_extract_result (result, 102 rs, 103 i)) 104 { 105 GNUNET_break (0); 106 rcsc->status = GNUNET_SYSERR; 107 return; 108 } 109 ret = rcsc->cb (rcsc->cb_cls, 110 rowid, 111 execution_date, 112 &amount_with_fee, 113 &closing_fee, 114 &reserve_pub, 115 receiver_account, 116 &wtid, 117 close_request_row); 118 GNUNET_PQ_cleanup_result (rs); 119 if (GNUNET_OK != ret) 120 break; 121 } 122 } 123 124 125 enum GNUNET_DB_QueryStatus 126 TALER_EXCHANGEDB_select_reserve_closed_above_serial_id ( 127 struct TALER_EXCHANGEDB_PostgresContext *pg, 128 uint64_t serial_id, 129 TALER_EXCHANGEDB_ReserveClosedCallback cb, 130 void *cb_cls) 131 { 132 struct GNUNET_PQ_QueryParam params[] = { 133 GNUNET_PQ_query_param_uint64 (&serial_id), 134 GNUNET_PQ_query_param_end 135 }; 136 struct ReserveClosedSerialContext rcsc = { 137 .cb = cb, 138 .cb_cls = cb_cls, 139 .pg = pg, 140 .status = GNUNET_OK 141 }; 142 enum GNUNET_DB_QueryStatus qs; 143 144 PREPARE ( 145 pg, 146 "reserves_close_get_incr", 147 "SELECT" 148 " close_uuid" 149 ",reserves.reserve_pub" 150 ",execution_date" 151 ",wtid" 152 ",wt.payto_uri AS receiver_account" 153 ",amount" 154 ",closing_fee" 155 ",close_request_row" 156 " FROM reserves_close" 157 " JOIN wire_targets wt" 158 " USING (wire_target_h_payto)" 159 " JOIN reserves" 160 " USING (reserve_pub)" 161 " WHERE close_uuid>=$1" 162 " ORDER BY close_uuid ASC;"); 163 qs = GNUNET_PQ_eval_prepared_multi_select ( 164 pg->conn, 165 "reserves_close_get_incr", 166 params, 167 &reserve_closed_serial_helper_cb, 168 &rcsc); 169 if (GNUNET_OK != rcsc.status) 170 return GNUNET_DB_STATUS_HARD_ERROR; 171 return qs; 172 }