insert_order_lock.c (4321B)
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 src/backenddb/insert_order_lock.c 18 * @brief Implementation of the insert_order_lock function for Postgres 19 * @author Iván Ávalos 20 */ 21 #include "platform.h" 22 #include <taler/taler_pq_lib.h> 23 #include "merchant-database/insert_order_lock.h" 24 #include "helper.h" 25 26 27 enum GNUNET_DB_QueryStatus 28 TALER_MERCHANTDB_insert_order_lock ( 29 struct TALER_MERCHANTDB_PostgresContext *pg, 30 const char *instance_id, 31 const char *order_id, 32 const char *product_id, 33 uint64_t quantity, 34 uint32_t quantity_frac) 35 { 36 struct GNUNET_PQ_QueryParam params[] = { 37 GNUNET_PQ_query_param_string (order_id), 38 GNUNET_PQ_query_param_string (product_id), 39 GNUNET_PQ_query_param_uint64 (&quantity), 40 GNUNET_PQ_query_param_uint32 (&quantity_frac), 41 GNUNET_PQ_query_param_end 42 }; 43 44 GNUNET_assert (NULL != pg->current_merchant_id); 45 GNUNET_assert (0 == strcmp (instance_id, 46 pg->current_merchant_id)); 47 check_connection (pg); 48 TMH_PQ_prepare_anon (pg, 49 "WITH tmp AS" 50 " (SELECT " 51 " product_serial" 52 " ,total_stock" 53 " ,total_stock_frac" 54 " ,total_sold" 55 " ,total_sold_frac" 56 " ,total_lost" 57 " ,total_lost_frac" 58 " ,allow_fractional_quantity" 59 " FROM merchant_inventory" 60 " WHERE product_id=$2)" 61 " INSERT INTO merchant_order_locks" 62 " (product_serial" 63 " ,total_locked" 64 " ,total_locked_frac" 65 " ,order_serial)" 66 " SELECT tmp.product_serial, $3::INT8, $4::INT4, order_serial" 67 " FROM merchant_orders" 68 " CROSS JOIN tmp" 69 " WHERE order_id=$1" 70 " AND (tmp.allow_fractional_quantity OR $4 = 0)" 71 " AND (tmp.total_stock = 9223372036854775807" 72 " OR (" 73 " (tmp.total_stock::NUMERIC * 1000000" 74 " + tmp.total_stock_frac::NUMERIC)" 75 " - (tmp.total_sold::NUMERIC * 1000000" 76 " + tmp.total_sold_frac::NUMERIC)" 77 " - (tmp.total_lost::NUMERIC * 1000000" 78 " + tmp.total_lost_frac::NUMERIC)" 79 " >= " 80 " (($3::NUMERIC * 1000000) + $4::NUMERIC)" 81 " + (SELECT COALESCE(SUM(total_locked::NUMERIC * 1000000" 82 " + total_locked_frac::NUMERIC), 0)" 83 " FROM merchant_inventory_locks mil" 84 " WHERE mil.product_serial = tmp.product_serial)" 85 " + (SELECT COALESCE(SUM(total_locked::NUMERIC * 1000000" 86 " + total_locked_frac::NUMERIC), 0)" 87 " FROM merchant_order_locks mol" 88 " WHERE mol.product_serial = tmp.product_serial)" 89 " ))"); 90 return GNUNET_PQ_eval_prepared_non_select (pg->conn, 91 "", 92 params); 93 }