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Base system with REST service to issue digital coins, run by the payment service provider
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pg_find_aggregation_transient.c (2581B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2022, 2024, 2025 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_find_aggregation_transient.c
     18  * @brief Implementation of the find_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_find_aggregation_transient.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TEH_PG_find_aggregation_transient (
     31   void *cls,
     32   const struct TALER_NormalizedPaytoHashP *h_payto,
     33   struct TALER_FullPayto *payto_uri,
     34   struct TALER_WireTransferIdentifierRawP *wtid,
     35   struct TALER_MerchantPublicKeyP *merchant_pub,
     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_end
     42   };
     43   struct GNUNET_PQ_ResultSpec rs[] = {
     44     GNUNET_PQ_result_spec_auto_from_type ("merchant_pub",
     45                                           merchant_pub),
     46     GNUNET_PQ_result_spec_auto_from_type ("wtid_raw",
     47                                           wtid),
     48     GNUNET_PQ_result_spec_string ("payto_uri",
     49                                   &payto_uri->full_payto),
     50     TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
     51                                  total),
     52     GNUNET_PQ_result_spec_end
     53   };
     54 
     55   PREPARE (pg,
     56            "find_transient_aggregations",
     57            "SELECT"
     58            "  atr.amount"
     59            " ,atr.wtid_raw"
     60            " ,atr.merchant_pub"
     61            " ,wt.payto_uri"
     62            " FROM wire_targets wt"
     63            " JOIN aggregation_transient atr"
     64            "   USING (wire_target_h_payto)"
     65            " WHERE wt.h_normalized_payto=$1"
     66            " LIMIT 1;"); /* Note: there should really be only 1 match */
     67   return GNUNET_PQ_eval_prepared_singleton_select (
     68     pg->conn,
     69     "find_transient_aggregations",
     70     params,
     71     rs);
     72 }