iterate_emergencies_by_count.c (5742B)
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/taler_error_codes.h" 17 #include "taler/taler_pq_lib.h" 18 #include "pg_helper.h" 19 #include "auditor-database/iterate_emergencies_by_count.h" 20 21 22 /** 23 * Closure for #emergency_cb(). 24 */ 25 struct EmergencyByCountContext 26 { 27 28 /** 29 * Function to call for each deposit confirmation. 30 */ 31 TALER_AUDITORDB_EmergenciesByCountCallback cb; 32 33 /** 34 * Closure for @e cb 35 */ 36 void *cb_cls; 37 38 /** 39 * Plugin context. 40 */ 41 struct TALER_AUDITORDB_PostgresContext *pg; 42 43 /** 44 * Query status to return. 45 */ 46 enum GNUNET_DB_QueryStatus qs; 47 }; 48 49 50 /** 51 * Helper function for #TALER_AUDITORDB_iterate_emergencies_by_count(). 52 * To be called with the results of a SELECT statement 53 * that has returned @a num_results results. 54 * 55 * @param cls closure of type `struct Emergency *` 56 * @param result the postgres result 57 * @param num_results the number of results in @a result 58 */ 59 static void 60 emergency_by_count_cb (void *cls, 61 PGresult *result, 62 unsigned int num_results) 63 { 64 struct EmergencyByCountContext *dcc = cls; 65 struct TALER_AUDITORDB_PostgresContext *pg = dcc->pg; 66 67 for (unsigned int i = 0; i < num_results; i++) 68 { 69 struct TALER_AUDITORDB_EmergenciesByCount dc; 70 struct GNUNET_PQ_ResultSpec rs[] = { 71 GNUNET_PQ_result_spec_uint64 ("row_id", 72 &dc.row_id), 73 GNUNET_PQ_result_spec_auto_from_type ("denompub_h", 74 &dc.denompub_h), 75 GNUNET_PQ_result_spec_uint64 ("num_issued", 76 &dc.num_issued), 77 GNUNET_PQ_result_spec_uint64 ("num_known", 78 &dc.num_known), 79 TALER_PQ_RESULT_SPEC_AMOUNT ("risk", 80 &dc.risk), 81 GNUNET_PQ_result_spec_absolute_time ("start", 82 &dc.start), 83 GNUNET_PQ_result_spec_absolute_time ("deposit_end", 84 &dc.deposit_end), 85 TALER_PQ_RESULT_SPEC_AMOUNT ("value", 86 &dc.value), 87 GNUNET_PQ_result_spec_bool ("suppressed", 88 &dc.suppressed), 89 GNUNET_PQ_result_spec_end 90 }; 91 enum GNUNET_GenericReturnValue rval; 92 93 if (GNUNET_OK != 94 GNUNET_PQ_extract_result (result, 95 rs, 96 i)) 97 { 98 GNUNET_break (0); 99 dcc->qs = GNUNET_DB_STATUS_HARD_ERROR; 100 return; 101 } 102 dcc->qs = i + 1; 103 rval = dcc->cb (dcc->cb_cls, 104 &dc); 105 GNUNET_PQ_cleanup_result (rs); 106 if (GNUNET_OK != rval) 107 break; 108 } 109 } 110 111 112 enum GNUNET_DB_QueryStatus 113 TALER_AUDITORDB_iterate_emergencies_by_count (struct 114 TALER_AUDITORDB_PostgresContext * 115 pg, 116 int64_t limit, 117 uint64_t offset, 118 bool return_suppressed, 119 TALER_AUDITORDB_EmergenciesByCountCallback 120 cb, 121 void *cb_cls) 122 { 123 uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit); 124 struct GNUNET_PQ_QueryParam params[] = { 125 GNUNET_PQ_query_param_uint64 (&offset), 126 GNUNET_PQ_query_param_bool (return_suppressed), 127 GNUNET_PQ_query_param_uint64 (&plimit), 128 GNUNET_PQ_query_param_end 129 }; 130 struct EmergencyByCountContext dcc = { 131 .cb = cb, 132 .cb_cls = cb_cls, 133 .pg = pg 134 }; 135 enum GNUNET_DB_QueryStatus qs; 136 137 PREPARE (pg, 138 "iterate_emergencies_by_count_emergency_by_count_get_desc", 139 "SELECT" 140 " row_id" 141 ",denompub_h" 142 ",num_issued" 143 ",num_known" 144 ",risk" 145 ",start" 146 ",deposit_end" 147 ",value" 148 ",suppressed" 149 " FROM auditor_emergency_by_count" 150 " WHERE (row_id < $1)" 151 " AND ($2 OR NOT suppressed)" 152 " ORDER BY row_id DESC" 153 " LIMIT $3" 154 ); 155 PREPARE (pg, 156 "iterate_emergencies_by_count_emergency_by_count_get_asc", 157 "SELECT" 158 " row_id" 159 ",denompub_h" 160 ",num_issued" 161 ",num_known" 162 ",risk" 163 ",start" 164 ",deposit_end" 165 ",value" 166 ",suppressed" 167 " FROM auditor_emergency_by_count" 168 " WHERE (row_id > $1)" 169 " AND ($2 OR NOT suppressed)" 170 " ORDER BY row_id ASC" 171 " LIMIT $3" 172 ); 173 qs = GNUNET_PQ_eval_prepared_multi_select ( 174 pg->conn, 175 (limit > 0) 176 ? "iterate_emergencies_by_count_emergency_by_count_get_asc" 177 : "iterate_emergencies_by_count_emergency_by_count_get_desc", 178 params, 179 &emergency_by_count_cb, 180 &dcc); 181 if (qs > 0) 182 return dcc.qs; 183 GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs); 184 return qs; 185 }