exchange

Base system with REST service to issue digital coins, run by the payment service provider
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pg_select_aggregation_transient.c (2476B)

      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_select_aggregation_transient.c
     18  * @brief Implementation of the select_aggregation_transient 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_select_aggregation_transient.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TEH_PG_select_aggregation_transient (
     31   void *cls,
     32   const struct TALER_FullPaytoHashP *h_payto,
     33   const struct TALER_MerchantPublicKeyP *merchant_pub,
     34   const char *exchange_account_section,
     35   struct TALER_WireTransferIdentifierRawP *wtid,
     36   struct TALER_Amount *total)
     37 {
     38   struct PostgresClosure *pg = cls;
     39   struct GNUNET_PQ_QueryParam params[] = {
     40     GNUNET_PQ_query_param_auto_from_type (h_payto),
     41     GNUNET_PQ_query_param_auto_from_type (merchant_pub),
     42     GNUNET_PQ_query_param_string (exchange_account_section),
     43     GNUNET_PQ_query_param_end
     44   };
     45   struct GNUNET_PQ_ResultSpec rs[] = {
     46     TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
     47                                  total),
     48     GNUNET_PQ_result_spec_auto_from_type ("wtid_raw",
     49                                           wtid),
     50     GNUNET_PQ_result_spec_end
     51   };
     52 
     53   PREPARE (pg,
     54            "select_aggregation_transient",
     55            "SELECT"
     56            "  amount"
     57            " ,wtid_raw"
     58            " FROM aggregation_transient"
     59            " WHERE wire_target_h_payto=$1"
     60            "   AND merchant_pub=$2"
     61            "   AND exchange_account_section=$3;");
     62   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     63                                                    "select_aggregation_transient",
     64                                                    params,
     65                                                    rs);
     66 }