exchange

Base system with REST service to issue digital coins, run by the payment service provider
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pg_lookup_denomination_key.c (3201B)

      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/pg_lookup_denomination_key.c
     18  * @brief Implementation of the lookup_denomination_key function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "taler/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_denomination_key.h"
     26 #include "pg_helper.h"
     27 
     28 enum GNUNET_DB_QueryStatus
     29 TEH_PG_lookup_denomination_key (
     30   void *cls,
     31   const struct TALER_DenominationHashP *h_denom_pub,
     32   struct TALER_EXCHANGEDB_DenominationKeyMetaData *meta)
     33 {
     34   struct PostgresClosure *pg = cls;
     35   struct GNUNET_PQ_QueryParam params[] = {
     36     GNUNET_PQ_query_param_auto_from_type (h_denom_pub),
     37     GNUNET_PQ_query_param_end
     38   };
     39   struct GNUNET_PQ_ResultSpec rs[] = {
     40     GNUNET_PQ_result_spec_timestamp ("valid_from",
     41                                      &meta->start),
     42     GNUNET_PQ_result_spec_timestamp ("expire_withdraw",
     43                                      &meta->expire_withdraw),
     44     GNUNET_PQ_result_spec_timestamp ("expire_deposit",
     45                                      &meta->expire_deposit),
     46     GNUNET_PQ_result_spec_timestamp ("expire_legal",
     47                                      &meta->expire_legal),
     48     TALER_PQ_RESULT_SPEC_AMOUNT ("coin",
     49                                  &meta->value),
     50     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_withdraw",
     51                                  &meta->fees.withdraw),
     52     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit",
     53                                  &meta->fees.deposit),
     54     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refresh",
     55                                  &meta->fees.refresh),
     56     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refund",
     57                                  &meta->fees.refund),
     58     GNUNET_PQ_result_spec_uint32 ("age_mask",
     59                                   &meta->age_mask.bits),
     60     GNUNET_PQ_result_spec_end
     61   };
     62 
     63   PREPARE (pg,
     64            "lookup_denomination_key",
     65            "SELECT"
     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                                                    "lookup_denomination_key",
     80                                                    params,
     81                                                    rs);
     82 }