pg_lookup_expected_transfers.c (9723B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2025 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 backenddb/pg_lookup_expected_transfers.c 18 * @brief Implementation of the lookup_expected_transfers function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "platform.h" 22 #include <taler/taler_error_codes.h> 23 #include <taler/taler_dbevents.h> 24 #include <taler/taler_pq_lib.h> 25 #include "pg_lookup_expected_transfers.h" 26 #include "pg_helper.h" 27 #include <microhttpd.h> /* for HTTP status codes */ 28 29 /** 30 * Closure for #lookup_expected_transfers_cb(). 31 */ 32 struct LookupExpectedTransfersContext 33 { 34 /** 35 * Function to call on results. 36 */ 37 TALER_MERCHANTDB_IncomingCallback cb; 38 39 /** 40 * Closure for @e cb. 41 */ 42 void *cb_cls; 43 44 /** 45 * Postgres context. 46 */ 47 struct PostgresClosure *pg; 48 49 /** 50 * Transaction status (set). 51 */ 52 enum GNUNET_DB_QueryStatus qs; 53 54 }; 55 56 57 /** 58 * Function to be called with the results of a SELECT statement 59 * that has returned @a num_results results. 60 * 61 * @param cls of type `struct LookupExpectedTransfersContext *` 62 * @param result the postgres result 63 * @param num_results the number of results in @a result 64 */ 65 static void 66 lookup_expected_transfers_cb (void *cls, 67 PGresult *result, 68 unsigned int num_results) 69 { 70 struct LookupExpectedTransfersContext *ltc = cls; 71 72 for (unsigned int i = 0; i<num_results; i++) 73 { 74 struct TALER_Amount expected_credit_amount; 75 struct TALER_WireTransferIdentifierRawP wtid; 76 struct TALER_FullPayto payto_uri; 77 char *exchange_url; 78 uint64_t expected_transfer_serial_id; 79 struct GNUNET_TIME_Timestamp execution_time 80 = GNUNET_TIME_UNIT_ZERO_TS; 81 bool confirmed; 82 bool validated; 83 bool no_amount; 84 char *last_detail = NULL; 85 uint32_t last_http_status = 0; 86 uint32_t last_ec = TALER_EC_NONE; 87 struct GNUNET_PQ_ResultSpec rs[] = { 88 GNUNET_PQ_result_spec_allow_null ( 89 TALER_PQ_result_spec_amount_with_currency ("expected_credit_amount", 90 &expected_credit_amount), 91 &no_amount), 92 GNUNET_PQ_result_spec_auto_from_type ("wtid", 93 &wtid), 94 GNUNET_PQ_result_spec_string ("payto_uri", 95 &payto_uri.full_payto), 96 GNUNET_PQ_result_spec_string ("exchange_url", 97 &exchange_url), 98 GNUNET_PQ_result_spec_uint64 ("expected_credit_serial", 99 &expected_transfer_serial_id), 100 GNUNET_PQ_result_spec_allow_null ( 101 GNUNET_PQ_result_spec_timestamp ("execution_time", 102 &execution_time), 103 NULL), 104 GNUNET_PQ_result_spec_bool ("confirmed", 105 &confirmed), 106 GNUNET_PQ_result_spec_allow_null ( 107 GNUNET_PQ_result_spec_uint32 ("last_http_status", 108 &last_http_status), 109 NULL), 110 GNUNET_PQ_result_spec_allow_null ( 111 GNUNET_PQ_result_spec_uint32 ("last_ec", 112 &last_ec), 113 NULL), 114 GNUNET_PQ_result_spec_allow_null ( 115 GNUNET_PQ_result_spec_string ("last_detail", 116 &last_detail), 117 NULL), 118 GNUNET_PQ_result_spec_end 119 }; 120 121 if (GNUNET_OK != 122 GNUNET_PQ_extract_result (result, 123 rs, 124 i)) 125 { 126 GNUNET_break (0); 127 ltc->qs = GNUNET_DB_STATUS_HARD_ERROR; 128 return; 129 } 130 validated = ( (MHD_HTTP_OK == last_http_status) && 131 (TALER_EC_NONE == last_ec) ); 132 ltc->cb (ltc->cb_cls, 133 no_amount 134 ? NULL 135 : &expected_credit_amount, 136 &wtid, 137 payto_uri, 138 exchange_url, 139 expected_transfer_serial_id, 140 execution_time, 141 confirmed, 142 validated, 143 last_http_status, 144 last_ec, 145 last_detail); 146 GNUNET_PQ_cleanup_result (rs); 147 } 148 ltc->qs = num_results; 149 } 150 151 152 enum GNUNET_DB_QueryStatus 153 TMH_PG_lookup_expected_transfers ( 154 void *cls, 155 const char *instance_id, 156 struct TALER_FullPayto payto_uri, 157 struct GNUNET_TIME_Timestamp before, 158 struct GNUNET_TIME_Timestamp after, 159 int64_t limit, 160 uint64_t offset, 161 enum TALER_EXCHANGE_YesNoAll confirmed, 162 enum TALER_EXCHANGE_YesNoAll verified, 163 TALER_MERCHANTDB_IncomingCallback cb, 164 void *cb_cls) 165 { 166 struct PostgresClosure *pg = cls; 167 uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit); 168 bool by_time = ( (! GNUNET_TIME_absolute_is_never (before.abs_time)) || 169 (! GNUNET_TIME_absolute_is_zero (after.abs_time)) ); 170 struct LookupExpectedTransfersContext ltc = { 171 .cb = cb, 172 .cb_cls = cb_cls, 173 .pg = pg 174 }; 175 struct GNUNET_PQ_QueryParam params[] = { 176 GNUNET_PQ_query_param_string (instance_id), 177 GNUNET_PQ_query_param_timestamp (&before), 178 GNUNET_PQ_query_param_timestamp (&after), 179 GNUNET_PQ_query_param_uint64 (&offset), 180 GNUNET_PQ_query_param_uint64 (&plimit), 181 NULL == payto_uri.full_payto 182 ? GNUNET_PQ_query_param_null () /* NULL: do not filter by payto URI */ 183 : GNUNET_PQ_query_param_string (payto_uri.full_payto), 184 GNUNET_PQ_query_param_bool (! by_time), /* $7: filter by time? */ 185 GNUNET_PQ_query_param_bool (TALER_EXCHANGE_YNA_ALL == confirmed), /* filter by confirmed? */ 186 GNUNET_PQ_query_param_bool (TALER_EXCHANGE_YNA_YES == confirmed), 187 GNUNET_PQ_query_param_bool (TALER_EXCHANGE_YNA_ALL == verified), /* filter by verified? */ 188 GNUNET_PQ_query_param_bool (TALER_EXCHANGE_YNA_YES == verified), 189 190 GNUNET_PQ_query_param_end 191 }; 192 enum GNUNET_DB_QueryStatus qs; 193 194 check_connection (pg); 195 PREPARE (pg, 196 "lookup_expected_transfers_asc", 197 "SELECT" 198 " met.expected_credit_amount" 199 ",met.wtid" 200 ",mac.payto_uri" 201 ",met.exchange_url" 202 ",met.expected_credit_serial" 203 ",mts.execution_time" 204 ",met.confirmed" 205 ",met.last_http_status" 206 ",met.last_ec" 207 ",met.last_detail" 208 " FROM merchant_expected_transfers met" 209 " JOIN merchant_accounts mac" 210 " USING (account_serial)" 211 " LEFT JOIN merchant_transfer_signatures mts" 212 " USING (expected_credit_serial)" 213 " WHERE ( $7 OR " 214 " (mts.execution_time IS NOT NULL AND" 215 " mts.execution_time < $2 AND" 216 " mts.execution_time >= $3) )" 217 " AND ( (CAST($6 AS TEXT) IS NULL) OR " 218 " (REGEXP_REPLACE(mac.payto_uri,'\\?.*','')" 219 " =REGEXP_REPLACE($6,'\\?.*','')) )" 220 " AND ( $8 OR " 221 " (met.confirmed = $9) )" 222 " AND ( $10 OR " 223 " ($11 = (200=met.last_http_status) AND" 224 " (0=met.last_ec) ) )" 225 " AND merchant_serial =" 226 " (SELECT merchant_serial" 227 " FROM merchant_instances" 228 " WHERE merchant_id=$1)" 229 " AND (met.expected_credit_serial > $4)" 230 " ORDER BY met.expected_credit_serial ASC" 231 " LIMIT $5"); 232 PREPARE (pg, 233 "lookup_expected_transfers_desc", 234 "SELECT" 235 " met.expected_credit_amount" 236 ",met.wtid" 237 ",mac.payto_uri" 238 ",met.exchange_url" 239 ",met.expected_credit_serial" 240 ",mts.execution_time" 241 ",met.confirmed" 242 ",met.last_http_status" 243 ",met.last_ec" 244 ",met.last_detail" 245 " FROM merchant_expected_transfers met" 246 " JOIN merchant_accounts mac" 247 " USING (account_serial)" 248 " LEFT JOIN merchant_transfer_signatures mts" 249 " USING (expected_credit_serial)" 250 " WHERE ( $7 OR " 251 " (mts.execution_time IS NOT NULL AND" 252 " mts.execution_time < $2 AND" 253 " mts.execution_time >= $3) )" 254 " AND ( (CAST($6 AS TEXT) IS NULL) OR " 255 " (REGEXP_REPLACE(mac.payto_uri,'\\?.*','')" 256 " =REGEXP_REPLACE($6,'\\?.*','')) )" 257 " AND ( $8 OR " 258 " (met.confirmed = $9) )" 259 " AND ( $10 OR " 260 " ($11 = (200=met.last_http_status) AND" 261 " (0=met.last_ec) ) )" 262 " AND merchant_serial =" 263 " (SELECT merchant_serial" 264 " FROM merchant_instances" 265 " WHERE merchant_id=$1)" 266 " AND (met.expected_credit_serial < $4)" 267 " ORDER BY met.expected_credit_serial DESC" 268 " LIMIT $5"); 269 qs = GNUNET_PQ_eval_prepared_multi_select ( 270 pg->conn, 271 (limit > 0) 272 ? "lookup_expected_transfers_asc" 273 : "lookup_expected_transfers_desc", 274 params, 275 &lookup_expected_transfers_cb, 276 <c); 277 if (0 >= qs) 278 return qs; 279 return ltc.qs; 280 }