exchange

Base system with REST service to issue digital coins, run by the payment service provider
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get_denomination_meta.c (3287B)

      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_denomination_meta.c
     18  * @brief Implementation of the get_denomination_meta function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "taler/taler_error_codes.h"
     22 #include "taler/taler_pq_lib.h"
     23 #include "exchange-database/get_denomination_meta.h"
     24 #include "helper.h"
     25 
     26 enum GNUNET_DB_QueryStatus
     27 TALER_EXCHANGEDB_get_denomination_meta (
     28   struct TALER_EXCHANGEDB_PostgresContext *pg,
     29   const struct TALER_DenominationHashP *h_denom_pub,
     30   struct TALER_EXCHANGEDB_DenominationKeyMetaData *meta)
     31 {
     32   struct GNUNET_PQ_QueryParam params[] = {
     33     GNUNET_PQ_query_param_auto_from_type (h_denom_pub),
     34     GNUNET_PQ_query_param_end
     35   };
     36   struct GNUNET_PQ_ResultSpec rs[] = {
     37     GNUNET_PQ_result_spec_uint64 ("denominations_serial",
     38                                   &meta->serial),
     39     GNUNET_PQ_result_spec_timestamp ("valid_from",
     40                                      &meta->start),
     41     GNUNET_PQ_result_spec_timestamp ("expire_withdraw",
     42                                      &meta->expire_withdraw),
     43     GNUNET_PQ_result_spec_timestamp ("expire_deposit",
     44                                      &meta->expire_deposit),
     45     GNUNET_PQ_result_spec_timestamp ("expire_legal",
     46                                      &meta->expire_legal),
     47     TALER_PQ_RESULT_SPEC_AMOUNT ("coin",
     48                                  &meta->value),
     49     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_withdraw",
     50                                  &meta->fees.withdraw),
     51     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit",
     52                                  &meta->fees.deposit),
     53     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refresh",
     54                                  &meta->fees.refresh),
     55     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refund",
     56                                  &meta->fees.refund),
     57     GNUNET_PQ_result_spec_uint32 ("age_mask",
     58                                   &meta->age_mask.bits),
     59     GNUNET_PQ_result_spec_end
     60   };
     61 
     62   PREPARE (pg,
     63            "get_denomination_meta",
     64            "SELECT"
     65            " denominations_serial"
     66            ",valid_from"
     67            ",expire_withdraw"
     68            ",expire_deposit"
     69            ",expire_legal"
     70            ",coin"
     71            ",fee_withdraw"
     72            ",fee_deposit"
     73            ",fee_refresh"
     74            ",fee_refund"
     75            ",age_mask"
     76            " FROM denominations"
     77            " WHERE denom_pub_hash=$1;");
     78   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     79                                                    "get_denomination_meta",
     80                                                    params,
     81                                                    rs);
     82 }