exchange

Base system with REST service to issue digital coins, run by the payment service provider
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lookup_denomination_key.c (3156B)

      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/lookup_denomination_key.c
     18  * @brief Implementation of the lookup_denomination_key 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/lookup_denomination_key.h"
     24 #include "helper.h"
     25 
     26 enum GNUNET_DB_QueryStatus
     27 TALER_EXCHANGEDB_lookup_denomination_key (
     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_timestamp ("valid_from",
     38                                      &meta->start),
     39     GNUNET_PQ_result_spec_timestamp ("expire_withdraw",
     40                                      &meta->expire_withdraw),
     41     GNUNET_PQ_result_spec_timestamp ("expire_deposit",
     42                                      &meta->expire_deposit),
     43     GNUNET_PQ_result_spec_timestamp ("expire_legal",
     44                                      &meta->expire_legal),
     45     TALER_PQ_RESULT_SPEC_AMOUNT ("coin",
     46                                  &meta->value),
     47     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_withdraw",
     48                                  &meta->fees.withdraw),
     49     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit",
     50                                  &meta->fees.deposit),
     51     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refresh",
     52                                  &meta->fees.refresh),
     53     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refund",
     54                                  &meta->fees.refund),
     55     GNUNET_PQ_result_spec_uint32 ("age_mask",
     56                                   &meta->age_mask.bits),
     57     GNUNET_PQ_result_spec_end
     58   };
     59 
     60   PREPARE (pg,
     61            "lookup_denomination_key",
     62            "SELECT"
     63            " valid_from"
     64            ",expire_withdraw"
     65            ",expire_deposit"
     66            ",expire_legal"
     67            ",coin"
     68            ",fee_withdraw"
     69            ",fee_deposit"
     70            ",fee_refresh"
     71            ",fee_refund"
     72            ",age_mask"
     73            " FROM denominations"
     74            " WHERE denom_pub_hash=$1;");
     75   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     76                                                    "lookup_denomination_key",
     77                                                    params,
     78                                                    rs);
     79 }