pg_get_emergency_by_count.c (5285B)
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_by_count.h" 22 23 24 /** 25 * Closure for #emergency_cb(). 26 */ 27 struct EmergencyByCountContext 28 { 29 30 /** 31 * Function to call for each deposit confirmation. 32 */ 33 TALER_AUDITORDB_EmergenciesByCountCallback cb; 34 35 /** 36 * Closure for @e cb 37 */ 38 void *cb_cls; 39 40 /** 41 * Plugin context. 42 */ 43 struct PostgresClosure *pg; 44 45 /** 46 * Query status to return. 47 */ 48 enum GNUNET_DB_QueryStatus qs; 49 }; 50 51 52 /** 53 * Helper function for #TAH_PG_get_emergency_by_count(). 54 * 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 Emergency *` 58 * @param result the postgres result 59 * @param num_results the number of results in @a result 60 */ 61 static void 62 emergency_by_count_cb (void *cls, 63 PGresult *result, 64 unsigned int num_results) 65 { 66 struct EmergencyByCountContext *dcc = cls; 67 struct PostgresClosure *pg = dcc->pg; 68 69 for (unsigned int i = 0; i < num_results; i++) 70 { 71 struct TALER_AUDITORDB_EmergenciesByCount dc; 72 struct GNUNET_PQ_ResultSpec rs[] = { 73 GNUNET_PQ_result_spec_uint64 ("row_id", 74 &dc.row_id), 75 GNUNET_PQ_result_spec_auto_from_type ("denompub_h", 76 &dc.denompub_h), 77 GNUNET_PQ_result_spec_uint64 ("num_issued", 78 &dc.num_issued), 79 GNUNET_PQ_result_spec_uint64 ("num_known", 80 &dc.num_known), 81 TALER_PQ_RESULT_SPEC_AMOUNT ("risk", 82 &dc.risk), 83 GNUNET_PQ_result_spec_absolute_time ("start", 84 &dc.start), 85 GNUNET_PQ_result_spec_absolute_time ("deposit_end", 86 &dc.deposit_end), 87 TALER_PQ_RESULT_SPEC_AMOUNT ("value", 88 &dc.value), 89 GNUNET_PQ_result_spec_bool ("suppressed", 90 &dc.suppressed), 91 GNUNET_PQ_result_spec_end 92 }; 93 enum GNUNET_GenericReturnValue rval; 94 95 if (GNUNET_OK != 96 GNUNET_PQ_extract_result (result, 97 rs, 98 i)) 99 { 100 GNUNET_break (0); 101 dcc->qs = GNUNET_DB_STATUS_HARD_ERROR; 102 return; 103 } 104 dcc->qs = i + 1; 105 rval = dcc->cb (dcc->cb_cls, 106 &dc); 107 GNUNET_PQ_cleanup_result (rs); 108 if (GNUNET_OK != rval) 109 break; 110 } 111 } 112 113 114 enum GNUNET_DB_QueryStatus 115 TAH_PG_get_emergency_by_count ( 116 void *cls, 117 int64_t limit, 118 uint64_t offset, 119 bool return_suppressed, 120 TALER_AUDITORDB_EmergenciesByCountCallback cb, 121 void *cb_cls) 122 { 123 struct PostgresClosure *pg = cls; 124 uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit); 125 struct GNUNET_PQ_QueryParam params[] = { 126 GNUNET_PQ_query_param_uint64 (&offset), 127 GNUNET_PQ_query_param_bool (return_suppressed), 128 GNUNET_PQ_query_param_uint64 (&plimit), 129 GNUNET_PQ_query_param_end 130 }; 131 struct EmergencyByCountContext dcc = { 132 .cb = cb, 133 .cb_cls = cb_cls, 134 .pg = pg 135 }; 136 enum GNUNET_DB_QueryStatus qs; 137 138 PREPARE (pg, 139 "auditor_emergency_by_count_get_desc", 140 "SELECT" 141 " row_id" 142 ",denompub_h" 143 ",num_issued" 144 ",num_known" 145 ",risk" 146 ",start" 147 ",deposit_end" 148 ",value" 149 ",suppressed" 150 " FROM auditor_emergency_by_count" 151 " WHERE (row_id < $1)" 152 " AND ($2 OR NOT suppressed)" 153 " ORDER BY row_id DESC" 154 " LIMIT $3" 155 ); 156 PREPARE (pg, 157 "auditor_emergency_by_count_get_asc", 158 "SELECT" 159 " row_id" 160 ",denompub_h" 161 ",num_issued" 162 ",num_known" 163 ",risk" 164 ",start" 165 ",deposit_end" 166 ",value" 167 ",suppressed" 168 " FROM auditor_emergency_by_count" 169 " WHERE (row_id > $1)" 170 " AND ($2 OR NOT suppressed)" 171 " ORDER BY row_id ASC" 172 " LIMIT $3" 173 ); 174 qs = GNUNET_PQ_eval_prepared_multi_select ( 175 pg->conn, 176 (limit > 0) 177 ? "auditor_emergency_by_count_get_asc" 178 : "auditor_emergency_by_count_get_desc", 179 params, 180 &emergency_by_count_cb, 181 &dcc); 182 if (qs > 0) 183 return dcc.qs; 184 GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs); 185 return qs; 186 }