pg_select_purse_merges_above_serial_id.c (6032B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022 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 pg_select_purse_merges_above_serial_id.c 18 * @brief Implementation of the select_purse_merges_above_serial_id function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "taler/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_select_purse_merges_above_serial_id.h" 26 #include "pg_helper.h" 27 28 29 /** 30 * Closure for #purse_deposit_serial_helper_cb(). 31 */ 32 struct PurseMergeSerialContext 33 { 34 35 /** 36 * Callback to call. 37 */ 38 TALER_EXCHANGEDB_PurseMergeCallback cb; 39 40 /** 41 * Closure for @e cb. 42 */ 43 void *cb_cls; 44 45 /** 46 * Plugin context. 47 */ 48 struct PostgresClosure *pg; 49 50 /** 51 * Status code, set to #GNUNET_SYSERR on hard errors. 52 */ 53 enum GNUNET_GenericReturnValue status; 54 }; 55 56 57 /** 58 * Helper function to be called with the results of a SELECT statement 59 * that has returned @a num_results results. 60 * 61 * @param cls closure of type `struct PurseMergeSerialContext` 62 * @param result the postgres result 63 * @param num_results the number of results in @a result 64 */ 65 static void 66 purse_merges_serial_helper_cb (void *cls, 67 PGresult *result, 68 unsigned int num_results) 69 { 70 struct PurseMergeSerialContext *dsc = cls; 71 struct PostgresClosure *pg = dsc->pg; 72 73 for (unsigned int i = 0; i<num_results; i++) 74 { 75 uint64_t rowid; 76 char *partner_base_url = NULL; 77 struct TALER_Amount amount; 78 struct TALER_Amount balance; 79 uint32_t flags32; 80 enum TALER_WalletAccountMergeFlags flags; 81 struct TALER_PurseMergePublicKeyP merge_pub; 82 struct TALER_ReservePublicKeyP reserve_pub; 83 struct TALER_PurseMergeSignatureP merge_sig; 84 struct TALER_PurseContractPublicKeyP purse_pub; 85 struct GNUNET_TIME_Timestamp merge_timestamp; 86 struct GNUNET_PQ_ResultSpec rs[] = { 87 TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee", 88 &amount), 89 TALER_PQ_RESULT_SPEC_AMOUNT ("balance", 90 &balance), 91 GNUNET_PQ_result_spec_allow_null ( 92 GNUNET_PQ_result_spec_string ("partner_base_url", 93 &partner_base_url), 94 NULL), 95 GNUNET_PQ_result_spec_uint32 ("flags", 96 &flags32), 97 GNUNET_PQ_result_spec_timestamp ("merge_timestamp", 98 &merge_timestamp), 99 GNUNET_PQ_result_spec_auto_from_type ("purse_pub", 100 &purse_pub), 101 GNUNET_PQ_result_spec_auto_from_type ("reserve_pub", 102 &reserve_pub), 103 GNUNET_PQ_result_spec_auto_from_type ("merge_sig", 104 &merge_sig), 105 GNUNET_PQ_result_spec_auto_from_type ("merge_pub", 106 &merge_pub), 107 GNUNET_PQ_result_spec_uint64 ("purse_merge_request_serial_id", 108 &rowid), 109 GNUNET_PQ_result_spec_end 110 }; 111 enum GNUNET_GenericReturnValue ret; 112 113 if (GNUNET_OK != 114 GNUNET_PQ_extract_result (result, 115 rs, 116 i)) 117 { 118 GNUNET_break (0); 119 dsc->status = GNUNET_SYSERR; 120 return; 121 } 122 flags = (enum TALER_WalletAccountMergeFlags) flags32; 123 ret = dsc->cb (dsc->cb_cls, 124 rowid, 125 partner_base_url, 126 &amount, 127 &balance, 128 flags, 129 &merge_pub, 130 &reserve_pub, 131 &merge_sig, 132 &purse_pub, 133 merge_timestamp); 134 GNUNET_PQ_cleanup_result (rs); 135 if (GNUNET_OK != ret) 136 break; 137 } 138 } 139 140 141 enum GNUNET_DB_QueryStatus 142 TEH_PG_select_purse_merges_above_serial_id ( 143 void *cls, 144 uint64_t serial_id, 145 TALER_EXCHANGEDB_PurseMergeCallback cb, 146 void *cb_cls) 147 { 148 struct PostgresClosure *pg = cls; 149 struct GNUNET_PQ_QueryParam params[] = { 150 GNUNET_PQ_query_param_uint64 (&serial_id), 151 GNUNET_PQ_query_param_end 152 }; 153 struct PurseMergeSerialContext dsc = { 154 .cb = cb, 155 .cb_cls = cb_cls, 156 .pg = pg, 157 .status = GNUNET_OK 158 }; 159 enum GNUNET_DB_QueryStatus qs; 160 161 PREPARE (pg, 162 "audit_get_purse_merge_incr", 163 "SELECT" 164 " pm.purse_merge_request_serial_id" 165 ",partner_base_url" 166 ",pr.amount_with_fee" 167 ",pr.balance" 168 ",pr.flags" 169 ",pr.merge_pub" 170 ",pm.reserve_pub" 171 ",pm.merge_sig" 172 ",pm.purse_pub" 173 ",pm.merge_timestamp" 174 " FROM purse_merges pm" 175 " JOIN purse_requests pr USING (purse_pub)" 176 " LEFT JOIN partners USING (partner_serial_id)" 177 " WHERE (" 178 " (purse_merge_request_serial_id>=$1)" 179 " )" 180 " ORDER BY purse_merge_request_serial_id ASC;"); 181 182 qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, 183 "audit_get_purse_merge_incr", 184 params, 185 &purse_merges_serial_helper_cb, 186 &dsc); 187 if (GNUNET_OK != dsc.status) 188 return GNUNET_DB_STATUS_HARD_ERROR; 189 return qs; 190 }