exchange

Base system with REST service to issue digital coins, run by the payment service provider
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pg_lookup_wire_timestamp.c (2024B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2022, 2024 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_wire_timestamp.c
     18  * @brief Implementation of the lookup_wire_timestamp function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "taler/taler_pq_lib.h"
     22 #include "taler/exchange-database/lookup_wire_timestamp.h"
     23 #include "helper.h"
     24 
     25 
     26 enum GNUNET_DB_QueryStatus
     27 TALER_EXCHANGEDB_lookup_wire_timestamp (struct
     28                                         TALER_EXCHANGEDB_PostgresContext *pg,
     29                                         const struct TALER_FullPayto payto_uri,
     30                                         struct GNUNET_TIME_Timestamp *last_date)
     31 {
     32   struct GNUNET_PQ_QueryParam params[] = {
     33     GNUNET_PQ_query_param_string (payto_uri.full_payto),
     34     GNUNET_PQ_query_param_end
     35   };
     36   struct GNUNET_PQ_ResultSpec rs[] = {
     37     GNUNET_PQ_result_spec_timestamp ("last_change",
     38                                      last_date),
     39     GNUNET_PQ_result_spec_end
     40   };
     41 
     42   PREPARE (pg,
     43            "lookup_wire_timestamp",
     44            "SELECT"
     45            " last_change"
     46            " FROM wire_accounts"
     47            " WHERE payto_uri=$1;");
     48   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     49                                                    "lookup_wire_timestamp",
     50                                                    params,
     51                                                    rs);
     52 }