exchange

Base system with REST service to issue digital coins, run by the payment service provider
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get_wire_fee.c (2712B)

      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 exchangedb/get_wire_fee.c
     18  * @brief Implementation of the get_wire_fee function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "taler/taler_pq_lib.h"
     22 #include "exchange-database/get_wire_fee.h"
     23 #include "helper.h"
     24 
     25 enum GNUNET_DB_QueryStatus
     26 TALER_EXCHANGEDB_get_wire_fee (
     27   struct TALER_EXCHANGEDB_PostgresContext *pg,
     28   const char *type,
     29   struct GNUNET_TIME_Timestamp date,
     30   uint64_t *rowid,
     31   struct GNUNET_TIME_Timestamp *start_date,
     32   struct GNUNET_TIME_Timestamp *end_date,
     33   struct TALER_WireFeeSet *fees,
     34   struct TALER_MasterSignatureP *master_sig)
     35 {
     36   struct GNUNET_PQ_QueryParam params[] = {
     37     GNUNET_PQ_query_param_string (type),
     38     GNUNET_PQ_query_param_timestamp (&date),
     39     GNUNET_PQ_query_param_end
     40   };
     41   struct GNUNET_PQ_ResultSpec rs[] = {
     42     GNUNET_PQ_result_spec_uint64 ("wire_fee_serial",
     43                                   rowid),
     44     GNUNET_PQ_result_spec_timestamp ("start_date",
     45                                      start_date),
     46     GNUNET_PQ_result_spec_timestamp ("end_date",
     47                                      end_date),
     48     TALER_PQ_RESULT_SPEC_AMOUNT ("wire_fee",
     49                                  &fees->wire),
     50     TALER_PQ_RESULT_SPEC_AMOUNT ("closing_fee",
     51                                  &fees->closing),
     52     GNUNET_PQ_result_spec_auto_from_type ("master_sig",
     53                                           master_sig),
     54     GNUNET_PQ_result_spec_end
     55   };
     56 
     57   PREPARE (pg,
     58            "get_wire_fee",
     59            "SELECT"
     60            " wire_fee_serial"
     61            ",start_date"
     62            ",end_date"
     63            ",wire_fee"
     64            ",closing_fee"
     65            ",master_sig"
     66            " FROM wire_fee"
     67            " WHERE wire_method=$1"
     68            "   AND start_date <= $2"
     69            "   AND end_date > $2;");
     70   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     71                                                    "get_wire_fee",
     72                                                    params,
     73                                                    rs);
     74 }