iterate_row_inconsistencies.c (4737B)
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 #include "taler/taler_pq_lib.h" 18 #include "pg_helper.h" 19 #include "auditor-database/iterate_row_inconsistencies.h" 20 21 22 /** 23 * Hard upper bound on the number of records returned by a single 24 * call, regardless of the limit requested by the client. 25 */ 26 #define MAX_RECORDS 50000 27 28 29 /** 30 * Closure for #deposit_confirmation_cb(). 31 */ 32 struct RowInconsistencyContext 33 { 34 35 /** 36 * Function to call for each deposit confirmation. 37 */ 38 TALER_AUDITORDB_RowInconsistencyCallback cb; 39 40 /** 41 * Closure for @e cb 42 */ 43 void *cb_cls; 44 45 /** 46 * Plugin context. 47 */ 48 struct TALER_AUDITORDB_PostgresContext *pg; 49 50 /** 51 * Query status to return. 52 */ 53 enum GNUNET_DB_QueryStatus qs; 54 }; 55 56 57 /** 58 * Helper function for #TALER_AUDITORDB_iterate_row_inconsistencies(). 59 * To be called with the results of a SELECT statement 60 * that has returned @a num_results results. 61 * 62 * @param cls closure of type `struct DepositConfirmationContext *` 63 * @param result the postgres result 64 * @param num_results the number of results in @a result 65 */ 66 static void 67 row_inconsistency_cb (void *cls, 68 PGresult *result, 69 unsigned int num_results) 70 { 71 struct RowInconsistencyContext *dcc = cls; 72 73 for (unsigned int i = 0; i < num_results; i++) 74 { 75 uint64_t serial_id; 76 77 struct TALER_AUDITORDB_RowInconsistency dc; 78 79 struct GNUNET_PQ_ResultSpec rs[] = { 80 GNUNET_PQ_result_spec_uint64 ("row_id", &serial_id), 81 82 GNUNET_PQ_result_spec_string ("row_table", &dc.row_table), 83 GNUNET_PQ_result_spec_string ("diagnostic", &dc.diagnostic), 84 GNUNET_PQ_result_spec_bool ("suppressed", &dc.suppressed), 85 86 87 GNUNET_PQ_result_spec_end 88 }; 89 enum GNUNET_GenericReturnValue rval; 90 91 if (GNUNET_OK != 92 GNUNET_PQ_extract_result (result, 93 rs, 94 i)) 95 { 96 GNUNET_break (0); 97 dcc->qs = GNUNET_DB_STATUS_HARD_ERROR; 98 return; 99 } 100 101 dcc->qs = i + 1; 102 103 104 rval = dcc->cb (dcc->cb_cls, 105 serial_id, 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 TALER_AUDITORDB_iterate_row_inconsistencies ( 116 struct TALER_AUDITORDB_PostgresContext *pg, 117 int64_t limit, 118 uint64_t offset, 119 bool return_suppressed, // maybe not needed 120 TALER_AUDITORDB_RowInconsistencyCallback cb, 121 void *cb_cls) 122 { 123 124 uint64_t plimit = GNUNET_MIN ((uint64_t) MAX_RECORDS, 125 TALER_AUDITORDB_abs_limit (limit)); 126 struct GNUNET_PQ_QueryParam params[] = { 127 GNUNET_PQ_query_param_uint64 (&offset), 128 GNUNET_PQ_query_param_bool (return_suppressed), 129 GNUNET_PQ_query_param_uint64 (&plimit), 130 GNUNET_PQ_query_param_end 131 }; 132 struct RowInconsistencyContext dcc = { 133 .cb = cb, 134 .cb_cls = cb_cls, 135 .pg = pg 136 }; 137 enum GNUNET_DB_QueryStatus qs; 138 139 140 PREPARE (pg, 141 "iterate_row_inconsistencies_inconsistency_select_desc", 142 "SELECT" 143 " row_id" 144 ",row_table" 145 ",diagnostic" 146 ",suppressed" 147 " FROM auditor_row_inconsistency" 148 " WHERE (row_id < $1)" 149 " AND ($2 OR suppressed is false)" 150 " ORDER BY row_id DESC" 151 " LIMIT $3" 152 ); 153 PREPARE (pg, 154 "iterate_row_inconsistencies_inconsistency_select_asc", 155 "SELECT" 156 " row_id" 157 ",row_table" 158 ",diagnostic" 159 ",suppressed" 160 " FROM auditor_row_inconsistency" 161 " WHERE (row_id > $1)" 162 " AND ($2 OR suppressed is false)" 163 " ORDER BY row_id ASC" 164 " LIMIT $3" 165 ); 166 qs = GNUNET_PQ_eval_prepared_multi_select ( 167 pg->conn, 168 (limit > 0) 169 ? "iterate_row_inconsistencies_inconsistency_select_asc" 170 : "iterate_row_inconsistencies_inconsistency_select_desc", 171 params, 172 &row_inconsistency_cb, 173 &dcc); 174 175 if (qs > 0) 176 return dcc.qs; 177 GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs); 178 return qs; 179 }