exchange

Base system with REST service to issue digital coins, run by the payment service provider
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find_aggregation_transient.c (2536B)

      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/find_aggregation_transient.c
     18  * @brief Implementation of the find_aggregation_transient 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/find_aggregation_transient.h"
     24 #include "helper.h"
     25 
     26 
     27 enum GNUNET_DB_QueryStatus
     28 TALER_EXCHANGEDB_find_aggregation_transient (
     29   struct TALER_EXCHANGEDB_PostgresContext *pg,
     30   const struct TALER_NormalizedPaytoHashP *h_payto,
     31   struct TALER_FullPayto *payto_uri,
     32   struct TALER_WireTransferIdentifierRawP *wtid,
     33   struct TALER_MerchantPublicKeyP *merchant_pub,
     34   struct TALER_Amount *total)
     35 {
     36   struct GNUNET_PQ_QueryParam params[] = {
     37     GNUNET_PQ_query_param_auto_from_type (h_payto),
     38     GNUNET_PQ_query_param_end
     39   };
     40   struct GNUNET_PQ_ResultSpec rs[] = {
     41     GNUNET_PQ_result_spec_auto_from_type ("merchant_pub",
     42                                           merchant_pub),
     43     GNUNET_PQ_result_spec_auto_from_type ("wtid_raw",
     44                                           wtid),
     45     GNUNET_PQ_result_spec_string ("payto_uri",
     46                                   &payto_uri->full_payto),
     47     TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
     48                                  total),
     49     GNUNET_PQ_result_spec_end
     50   };
     51 
     52   PREPARE (pg,
     53            "find_transient_aggregations",
     54            "SELECT"
     55            "  atr.amount"
     56            " ,atr.wtid_raw"
     57            " ,atr.merchant_pub"
     58            " ,wt.payto_uri"
     59            " FROM wire_targets wt"
     60            " JOIN aggregation_transient atr"
     61            "   USING (wire_target_h_payto)"
     62            " WHERE wt.h_normalized_payto=$1"
     63            " LIMIT 1;"); /* Note: there should really be only 1 match */
     64   return GNUNET_PQ_eval_prepared_singleton_select (
     65     pg->conn,
     66     "find_transient_aggregations",
     67     params,
     68     rs);
     69 }