pg_get_emergency.c (5025B)
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_emergency.h" 22 23 /** 24 * Closure for #emergency_cb(). 25 */ 26 struct EmergencyContext 27 { 28 29 /** 30 * Function to call for each deposit confirmation. 31 */ 32 TALER_AUDITORDB_EmergencyCallback cb; 33 34 /** 35 * Closure for @e cb 36 */ 37 void *cb_cls; 38 39 /** 40 * Plugin context. 41 */ 42 struct PostgresClosure *pg; 43 44 /** 45 * Query status to return. 46 */ 47 enum GNUNET_DB_QueryStatus qs; 48 }; 49 50 51 /** 52 * Helper function for #TAH_PG_get_emergency(). 53 * To be called with the results of a SELECT statement 54 * that has returned @a num_results results. 55 * 56 * @param cls closure of type `struct Emergency *` 57 * @param result the postgres result 58 * @param num_results the number of results in @a result 59 */ 60 static void 61 emergency_cb (void *cls, 62 PGresult *result, 63 unsigned int num_results) 64 { 65 struct EmergencyContext *dcc = cls; 66 struct PostgresClosure *pg = dcc->pg; 67 68 for (unsigned int i = 0; i < num_results; i++) 69 { 70 struct TALER_AUDITORDB_Emergency dc; 71 struct GNUNET_PQ_ResultSpec rs[] = { 72 GNUNET_PQ_result_spec_uint64 ("row_id", 73 &dc.row_id), 74 GNUNET_PQ_result_spec_auto_from_type ("denompub_h", 75 &dc.denompub_h), 76 TALER_PQ_RESULT_SPEC_AMOUNT ("denom_risk", 77 &dc.denom_risk), 78 TALER_PQ_RESULT_SPEC_AMOUNT ("denom_loss", 79 &dc.denom_loss), 80 GNUNET_PQ_result_spec_absolute_time ("deposit_start", 81 &dc.deposit_start), 82 GNUNET_PQ_result_spec_absolute_time ("deposit_end", 83 &dc.deposit_end), 84 TALER_PQ_RESULT_SPEC_AMOUNT ("value", 85 &dc.value), 86 GNUNET_PQ_result_spec_bool ("suppressed", 87 &dc.suppressed), 88 GNUNET_PQ_result_spec_end 89 }; 90 enum GNUNET_GenericReturnValue rval; 91 92 if (GNUNET_OK != 93 GNUNET_PQ_extract_result (result, 94 rs, 95 i)) 96 { 97 GNUNET_break (0); 98 dcc->qs = GNUNET_DB_STATUS_HARD_ERROR; 99 return; 100 } 101 dcc->qs = i + 1; 102 rval = dcc->cb (dcc->cb_cls, 103 &dc); 104 GNUNET_PQ_cleanup_result (rs); 105 if (GNUNET_OK != rval) 106 break; 107 } 108 } 109 110 111 enum GNUNET_DB_QueryStatus 112 TAH_PG_get_emergency ( 113 void *cls, 114 int64_t limit, 115 uint64_t offset, 116 bool return_suppressed, 117 TALER_AUDITORDB_EmergencyCallback cb, 118 void *cb_cls) 119 { 120 struct PostgresClosure *pg = cls; 121 uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit); 122 struct GNUNET_PQ_QueryParam params[] = { 123 GNUNET_PQ_query_param_uint64 (&offset), 124 GNUNET_PQ_query_param_bool (return_suppressed), 125 GNUNET_PQ_query_param_uint64 (&plimit), 126 GNUNET_PQ_query_param_end 127 }; 128 struct EmergencyContext dcc = { 129 .cb = cb, 130 .cb_cls = cb_cls, 131 .pg = pg 132 }; 133 enum GNUNET_DB_QueryStatus qs; 134 135 PREPARE (pg, 136 "auditor_emergency_get_desc", 137 "SELECT" 138 " row_id" 139 ",denompub_h" 140 ",denom_risk" 141 ",denom_loss" 142 ",deposit_start" 143 ",deposit_end" 144 ",value" 145 ",suppressed" 146 " FROM auditor_emergency" 147 " WHERE (row_id < $1)" 148 " AND ($2 OR NOT suppressed)" 149 " ORDER BY row_id DESC" 150 " LIMIT $3" 151 ); 152 PREPARE (pg, 153 "auditor_emergency_get_asc", 154 "SELECT" 155 " row_id" 156 ",denompub_h" 157 ",denom_risk" 158 ",denom_loss" 159 ",deposit_start" 160 ",deposit_end" 161 ",value" 162 ",suppressed" 163 " FROM auditor_emergency" 164 " WHERE (row_id > $1)" 165 " AND ($2 OR NOT suppressed)" 166 " ORDER BY row_id ASC" 167 " LIMIT $3" 168 ); 169 qs = GNUNET_PQ_eval_prepared_multi_select ( 170 pg->conn, 171 (limit > 0) 172 ? "auditor_emergency_get_asc" 173 : "auditor_emergency_get_desc", 174 params, 175 &emergency_cb, 176 &dcc); 177 178 if (qs > 0) 179 return dcc.qs; 180 GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs); 181 return qs; 182 }