iterate_pending_deposits.c (5873B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2023 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 * @file src/auditordb/iterate_pending_deposits.c 18 * @brief Implementation of the iterate_pending_deposits function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "taler/taler_pq_lib.h" 22 #include "auditor-database/iterate_pending_deposits.h" 23 #include "pg_helper.h" 24 25 26 /** 27 * Hard upper bound on the number of records returned by a single 28 * call, regardless of the limit requested by the client. 29 */ 30 #define MAX_RECORDS 50000 31 32 33 /** 34 * Closure for #wire_missing_cb(). 35 */ 36 struct WireMissingContext 37 { 38 39 /** 40 * Function to call for each pending deposit. 41 */ 42 TALER_AUDITORDB_WireMissingCallback cb; 43 44 /** 45 * Closure for @e cb 46 */ 47 void *cb_cls; 48 49 /** 50 * Plugin context. 51 */ 52 struct TALER_AUDITORDB_PostgresContext *pg; 53 54 /** 55 * Query status to return. 56 */ 57 enum GNUNET_DB_QueryStatus qs; 58 }; 59 60 61 /** 62 * Helper function for #TALER_AUDITORDB_iterate_pending_deposits(). 63 * To be called with the results of a SELECT statement 64 * that has returned @a num_results results. 65 * 66 * @param cls closure of type `struct WireMissingContext *` 67 * @param result the postgres result 68 * @param num_results the number of results in @a result 69 */ 70 static void 71 wire_missing_cb (void *cls, 72 PGresult *result, 73 unsigned int num_results) 74 { 75 struct WireMissingContext *eic = cls; 76 struct TALER_AUDITORDB_PostgresContext *pg = eic->pg; 77 78 for (unsigned int i = 0; i < num_results; i++) 79 { 80 uint64_t row_id; 81 uint64_t batch_deposit_serial_id; 82 struct TALER_Amount total_amount; 83 struct TALER_FullPaytoHashP wire_target_h_payto; 84 struct GNUNET_TIME_Timestamp deadline; 85 bool suppressed; 86 struct GNUNET_PQ_ResultSpec rs[] = { 87 GNUNET_PQ_result_spec_uint64 ("row_id", 88 &row_id), 89 GNUNET_PQ_result_spec_uint64 ("batch_deposit_serial_id", 90 &batch_deposit_serial_id), 91 TALER_PQ_RESULT_SPEC_AMOUNT ("total_amount", 92 &total_amount), 93 GNUNET_PQ_result_spec_auto_from_type ("wire_target_h_payto", 94 &wire_target_h_payto), 95 GNUNET_PQ_result_spec_timestamp ("deadline", 96 &deadline), 97 GNUNET_PQ_result_spec_bool ("suppressed", 98 &suppressed), 99 GNUNET_PQ_result_spec_end 100 }; 101 102 if (GNUNET_OK != 103 GNUNET_PQ_extract_result (result, 104 rs, 105 i)) 106 { 107 GNUNET_break (0); 108 eic->qs = GNUNET_DB_STATUS_HARD_ERROR; 109 return; 110 } 111 eic->cb (eic->cb_cls, 112 row_id, 113 batch_deposit_serial_id, 114 &total_amount, 115 &wire_target_h_payto, 116 deadline, 117 suppressed); 118 } 119 eic->qs = num_results; 120 } 121 122 123 enum GNUNET_DB_QueryStatus 124 TALER_AUDITORDB_iterate_pending_deposits (struct 125 TALER_AUDITORDB_PostgresContext *pg, 126 struct GNUNET_TIME_Absolute deadline, 127 int64_t limit, 128 uint64_t offset, 129 bool return_suppressed, 130 TALER_AUDITORDB_WireMissingCallback cb 131 , 132 void *cb_cls) 133 { 134 uint64_t ulimit = GNUNET_MIN ((uint64_t) MAX_RECORDS, 135 TALER_AUDITORDB_abs_limit (limit)); 136 struct GNUNET_PQ_QueryParam params[] = { 137 GNUNET_PQ_query_param_absolute_time (&deadline), 138 GNUNET_PQ_query_param_uint64 (&offset), 139 GNUNET_PQ_query_param_uint64 (&ulimit), 140 GNUNET_PQ_query_param_bool (return_suppressed), 141 GNUNET_PQ_query_param_end 142 }; 143 struct WireMissingContext eic = { 144 .cb = cb, 145 .cb_cls = cb_cls, 146 .pg = pg 147 }; 148 enum GNUNET_DB_QueryStatus qs; 149 150 PREPARE (pg, 151 "iterate_pending_deposits_asc", 152 "SELECT" 153 " row_id" 154 ",total_amount" 155 ",wire_target_h_payto" 156 ",batch_deposit_serial_id" 157 ",deadline" 158 ",suppressed" 159 " FROM auditor_pending_deposits" 160 " WHERE deadline<$1" 161 " AND (row_id > $2)" 162 " AND ($4 OR NOT suppressed)" 163 " ORDER BY row_id ASC" 164 " LIMIT $3;"); 165 PREPARE (pg, 166 "iterate_pending_deposits_desc", 167 "SELECT" 168 " row_id" 169 ",total_amount" 170 ",wire_target_h_payto" 171 ",batch_deposit_serial_id" 172 ",deadline" 173 ",suppressed" 174 " FROM auditor_pending_deposits" 175 " WHERE deadline<$1" 176 " AND (row_id < $2)" 177 " AND ($4 OR NOT suppressed)" 178 " ORDER BY row_id DESC" 179 " LIMIT $3;"); 180 qs = GNUNET_PQ_eval_prepared_multi_select ( 181 pg->conn, 182 (limit > 0) 183 ? "iterate_pending_deposits_asc" 184 : "iterate_pending_deposits_desc", 185 params, 186 &wire_missing_cb, 187 &eic); 188 if (0 > qs) 189 return qs; 190 GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != eic.qs); 191 return eic.qs; 192 }