merchant

Merchant backend to process payments, run by merchants
Log | Files | Refs | Submodules | README | LICENSE

pg_lookup_wire_fee.c (3255B)

      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 backenddb/pg_lookup_wire_fee.c
     18  * @brief Implementation of the lookup_wire_fee function for Postgres
     19  * @author Iván Ávalos
     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_wire_fee.h"
     26 #include "pg_helper.h"
     27 
     28 enum GNUNET_DB_QueryStatus
     29 TMH_PG_lookup_wire_fee (void *cls,
     30                         const struct TALER_MasterPublicKeyP *master_pub,
     31                         const char *wire_method,
     32                         struct GNUNET_TIME_Timestamp contract_date,
     33                         struct TALER_WireFeeSet *fees,
     34                         struct GNUNET_TIME_Timestamp *start_date,
     35                         struct GNUNET_TIME_Timestamp *end_date,
     36                         struct TALER_MasterSignatureP *master_sig)
     37 {
     38   struct PostgresClosure *pg = cls;
     39   struct GNUNET_HashCode h_wire_method;
     40   struct GNUNET_PQ_QueryParam params[] = {
     41     GNUNET_PQ_query_param_auto_from_type (master_pub),
     42     GNUNET_PQ_query_param_auto_from_type (&h_wire_method),
     43     GNUNET_PQ_query_param_timestamp (&contract_date),
     44     GNUNET_PQ_query_param_end
     45   };
     46   struct GNUNET_PQ_ResultSpec rs[] = {
     47     TALER_PQ_result_spec_amount_with_currency ("wire_fee",
     48                                                &fees->wire),
     49     TALER_PQ_result_spec_amount_with_currency ("closing_fee",
     50                                                &fees->closing),
     51     GNUNET_PQ_result_spec_timestamp ("start_date",
     52                                      start_date),
     53     GNUNET_PQ_result_spec_timestamp ("end_date",
     54                                      end_date),
     55     GNUNET_PQ_result_spec_auto_from_type ("master_sig",
     56                                           master_sig),
     57     GNUNET_PQ_result_spec_end
     58   };
     59 
     60   check_connection (pg);
     61   GNUNET_CRYPTO_hash (wire_method,
     62                       strlen (wire_method) + 1,
     63                       &h_wire_method);
     64 
     65   PREPARE (pg,
     66            "lookup_wire_fee",
     67            "SELECT"
     68            " wire_fee"
     69            ",closing_fee"
     70            ",start_date"
     71            ",end_date"
     72            ",master_sig"
     73            " FROM merchant_exchange_wire_fees"
     74            " WHERE master_pub=$1"
     75            "   AND h_wire_method=$2"
     76            "   AND start_date <= $3"
     77            "   AND end_date > $3");
     78 
     79   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     80                                                    "lookup_wire_fee",
     81                                                    params,
     82                                                    rs);
     83 }