iterate_coin_inconsistencies.c (5658B)
1 /* 2 This file is part of TALER 3 Copyright (C) 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 18 #include "taler/taler_error_codes.h" 19 #include "taler/taler_pq_lib.h" 20 #include "pg_helper.h" 21 #include "auditor-database/iterate_coin_inconsistencies.h" 22 23 24 /** 25 * Hard upper bound on the number of records returned by a single 26 * call, regardless of the limit requested by the client. 27 */ 28 #define MAX_RECORDS 50000 29 30 31 /** 32 * Closure for #deposit_confirmation_cb(). 33 */ 34 struct CoinInconsistencyContext 35 { 36 37 /** 38 * Function to call for each deposit confirmation. 39 */ 40 TALER_AUDITORDB_CoinInconsistencyCallback cb; 41 42 /** 43 * Closure for @e cb 44 */ 45 void *cb_cls; 46 47 /** 48 * Plugin context. 49 */ 50 struct TALER_AUDITORDB_PostgresContext *pg; 51 52 /** 53 * Query status to return. 54 */ 55 enum GNUNET_DB_QueryStatus qs; 56 }; 57 58 59 /** 60 * Helper function for #TALER_AUDITORDB_iterate_coin_inconsistencies(). 61 * To be called with the results of a SELECT statement 62 * that has returned @a num_results results. 63 * 64 * @param cls closure of type `struct DepositConfirmationContext *` 65 * @param result the postgres result 66 * @param num_results the number of results in @a result 67 */ 68 static void 69 coin_inconsistency_cb (void *cls, 70 PGresult *result, 71 unsigned int num_results) 72 { 73 struct CoinInconsistencyContext *dcc = cls; 74 struct TALER_AUDITORDB_PostgresContext *pg = dcc->pg; 75 76 for (unsigned int i = 0; i < num_results; i++) 77 { 78 struct TALER_AUDITORDB_CoinInconsistency dc; 79 80 struct GNUNET_PQ_ResultSpec rs[] = { 81 GNUNET_PQ_result_spec_uint64 ("row_id", 82 &dc.row_id), 83 GNUNET_PQ_result_spec_string ("operation", 84 &dc.operation), 85 TALER_PQ_RESULT_SPEC_AMOUNT ("exchange_amount", 86 &dc.exchange_amount), 87 TALER_PQ_RESULT_SPEC_AMOUNT ("auditor_amount", 88 &dc.auditor_amount), 89 GNUNET_PQ_result_spec_auto_from_type ("coin_pub", &dc.coin_pub), 90 GNUNET_PQ_result_spec_bool ("profitable", 91 &dc.profitable), 92 GNUNET_PQ_result_spec_bool ("suppressed", 93 &dc.suppressed), 94 95 GNUNET_PQ_result_spec_end 96 }; 97 enum GNUNET_GenericReturnValue rval; 98 99 if (GNUNET_OK != 100 GNUNET_PQ_extract_result (result, 101 rs, 102 i)) 103 { 104 GNUNET_break (0); 105 dcc->qs = GNUNET_DB_STATUS_HARD_ERROR; 106 return; 107 } 108 109 dcc->qs = i + 1; 110 111 112 rval = dcc->cb (dcc->cb_cls, 113 dc.row_id, 114 &dc); 115 GNUNET_PQ_cleanup_result (rs); 116 if (GNUNET_OK != rval) 117 break; 118 } 119 } 120 121 122 enum GNUNET_DB_QueryStatus 123 TALER_AUDITORDB_iterate_coin_inconsistencies ( 124 struct TALER_AUDITORDB_PostgresContext *pg, 125 int64_t limit, 126 uint64_t offset, 127 bool return_suppressed, // maybe not needed 128 TALER_AUDITORDB_CoinInconsistencyCallback cb, 129 void *cb_cls) 130 { 131 132 uint64_t plimit = GNUNET_MIN ((uint64_t) MAX_RECORDS, 133 TALER_AUDITORDB_abs_limit (limit)); 134 struct GNUNET_PQ_QueryParam params[] = { 135 GNUNET_PQ_query_param_uint64 (&offset), 136 GNUNET_PQ_query_param_bool (return_suppressed), 137 GNUNET_PQ_query_param_uint64 (&plimit), 138 GNUNET_PQ_query_param_end 139 }; 140 struct CoinInconsistencyContext dcc = { 141 .cb = cb, 142 .cb_cls = cb_cls, 143 .pg = pg 144 }; 145 enum GNUNET_DB_QueryStatus qs; 146 147 148 PREPARE (pg, 149 "iterate_coin_inconsistencies_inconsistency_select_desc", 150 "SELECT" 151 " row_id" 152 ",operation" 153 ",exchange_amount" 154 ",auditor_amount" 155 ",coin_pub" 156 ",profitable" 157 ",suppressed" 158 " FROM auditor_coin_inconsistency" 159 " WHERE (row_id < $1)" 160 " AND ($2 OR suppressed is false)" 161 " ORDER BY row_id DESC" 162 " LIMIT $3" 163 ); 164 PREPARE (pg, 165 "iterate_coin_inconsistencies_inconsistency_select_asc", 166 "SELECT" 167 " row_id" 168 ",operation" 169 ",exchange_amount" 170 ",auditor_amount" 171 ",coin_pub" 172 ",profitable" 173 ",suppressed" 174 " FROM auditor_coin_inconsistency" 175 " WHERE (row_id > $1)" 176 " AND ($2 OR suppressed is false)" 177 " ORDER BY row_id ASC" 178 " LIMIT $3" 179 ); 180 qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, 181 (limit > 0) ? 182 "iterate_coin_inconsistencies_inconsistency_select_asc" 183 : 184 "iterate_coin_inconsistencies_inconsistency_select_desc", 185 params, 186 &coin_inconsistency_cb, 187 &dcc); 188 189 190 if (qs > 0) 191 return dcc.qs; 192 GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs); 193 return qs; 194 }