pg_get_denomination_pending.c (4961B)
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 #include "taler/platform.h" 17 #include "taler/taler_error_codes.h" 18 #include "taler/taler_dbevents.h" 19 #include "taler/taler_pq_lib.h" 20 #include "pg_helper.h" 21 #include "pg_get_denomination_pending.h" 22 23 24 struct DenominationPendingContext 25 { 26 27 /** 28 * Function to call for each bad sig loss. 29 */ 30 TALER_AUDITORDB_DenominationPendingCallback cb; 31 32 /** 33 * Closure for @e cb 34 */ 35 void *cb_cls; 36 37 /** 38 * Plugin context. 39 */ 40 struct PostgresClosure *pg; 41 42 /** 43 * Query status to return. 44 */ 45 enum GNUNET_DB_QueryStatus qs; 46 }; 47 48 49 /** 50 * Helper function for #TAH_PG_get_denomination_pending(). 51 * To be called with the results of a SELECT statement 52 * that has returned @a num_results results. 53 * 54 * @param cls closure of type `struct DenominationPendingContext *` 55 * @param result the postgres result 56 * @param num_results the number of results in @a result 57 */ 58 static void 59 denomination_pending_cb (void *cls, 60 PGresult *result, 61 unsigned int num_results) 62 { 63 struct DenominationPendingContext *dcc = cls; 64 struct PostgresClosure *pg = dcc->pg; 65 66 for (unsigned int i = 0; i < num_results; i++) 67 { 68 uint64_t serial_id; 69 struct TALER_AUDITORDB_DenominationPending dc; 70 struct GNUNET_PQ_ResultSpec rs[] = { 71 GNUNET_PQ_result_spec_uint64 ("row_id", 72 &serial_id), 73 GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash", 74 &dc.denom_pub_hash), 75 TALER_PQ_RESULT_SPEC_AMOUNT ("denom_balance", 76 &dc.denom_balance), 77 TALER_PQ_RESULT_SPEC_AMOUNT ("denom_loss", 78 &dc.denom_loss), 79 GNUNET_PQ_result_spec_uint64 ("num_issued", 80 &dc.num_issued), 81 TALER_PQ_RESULT_SPEC_AMOUNT ("denom_risk", 82 &dc.denom_risk), 83 TALER_PQ_RESULT_SPEC_AMOUNT ("recoup_loss", 84 &dc.recoup_loss), 85 GNUNET_PQ_result_spec_end 86 }; 87 enum GNUNET_GenericReturnValue rval; 88 89 if (GNUNET_OK != 90 GNUNET_PQ_extract_result (result, 91 rs, 92 i)) 93 { 94 GNUNET_break (0); 95 dcc->qs = GNUNET_DB_STATUS_HARD_ERROR; 96 return; 97 } 98 dcc->qs = i + 1; 99 rval = dcc->cb (dcc->cb_cls, 100 serial_id, 101 &dc); 102 GNUNET_PQ_cleanup_result (rs); 103 if (GNUNET_OK != rval) 104 break; 105 } 106 } 107 108 109 enum GNUNET_DB_QueryStatus 110 TAH_PG_get_denomination_pending ( 111 void *cls, 112 int64_t limit, 113 uint64_t offset, 114 TALER_AUDITORDB_DenominationPendingCallback cb, 115 void *cb_cls) 116 { 117 struct PostgresClosure *pg = cls; 118 uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit); 119 struct GNUNET_PQ_QueryParam params[] = { 120 GNUNET_PQ_query_param_uint64 (&offset), 121 GNUNET_PQ_query_param_uint64 (&plimit), 122 GNUNET_PQ_query_param_end 123 }; 124 struct DenominationPendingContext dcc = { 125 .cb = cb, 126 .cb_cls = cb_cls, 127 .pg = pg 128 }; 129 enum GNUNET_DB_QueryStatus qs; 130 131 PREPARE (pg, 132 "auditor_denomination_pending_get_desc", 133 "SELECT" 134 " row_id," 135 " denom_pub_hash," 136 " denom_balance," 137 " denom_loss," 138 " num_issued," 139 " denom_risk," 140 " recoup_loss" 141 " FROM auditor_denomination_pending" 142 " WHERE (row_id < $1)" 143 " ORDER BY row_id DESC" 144 " LIMIT $2" 145 ); 146 PREPARE (pg, 147 "auditor_denomination_pending_get_asc", 148 "SELECT" 149 " row_id," 150 " denom_pub_hash," 151 " denom_balance," 152 " denom_loss," 153 " num_issued," 154 " denom_risk," 155 " recoup_loss" 156 " FROM auditor_denomination_pending" 157 " WHERE (row_id > $1)" 158 " ORDER BY row_id ASC" 159 " LIMIT $2" 160 ); 161 qs = GNUNET_PQ_eval_prepared_multi_select ( 162 pg->conn, 163 (limit > 0) 164 ? "auditor_denomination_pending_get_asc" 165 : "auditor_denomination_pending_get_desc", 166 params, 167 &denomination_pending_cb, 168 &dcc); 169 if (qs > 0) 170 return dcc.qs; 171 GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs); 172 return qs; 173 }