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Base system with REST service to issue digital coins, run by the payment service provider
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get_aggregation_transient_by_wtid.c (2289B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2026 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 src/exchangedb/get_aggregation_transient_by_wtid.c
     18  * @brief Implementation of the get_aggregation_transient_by_wtid function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "taler/taler_pq_lib.h"
     22 #include "helper.h"
     23 #include "exchange-database/get_aggregation_transient_by_wtid.h"
     24 
     25 
     26 enum GNUNET_DB_QueryStatus
     27 TALER_EXCHANGEDB_get_aggregation_transient_by_wtid (
     28   struct TALER_EXCHANGEDB_PostgresContext *pg,
     29   const struct TALER_FullPaytoHashP *wire_target_h_payto,
     30   const struct TALER_WireTransferIdentifierRawP *wtid,
     31   struct TALER_Amount *amount,
     32   uint64_t *legitimization_measure_serial_id)
     33 {
     34   struct GNUNET_PQ_QueryParam params[] = {
     35     GNUNET_PQ_query_param_auto_from_type (wire_target_h_payto),
     36     GNUNET_PQ_query_param_auto_from_type (wtid),
     37     GNUNET_PQ_query_param_end
     38   };
     39   struct GNUNET_PQ_ResultSpec rs[] = {
     40     TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
     41                                  amount),
     42     GNUNET_PQ_result_spec_uint64 ("legitimization_requirement_serial_id",
     43                                   legitimization_measure_serial_id),
     44     GNUNET_PQ_result_spec_end
     45   };
     46 
     47   /* (wire_target_h_payto, wtid_raw) is the table's unique key. */
     48   PREPARE (pg,
     49            "get_aggregation_transient_by_wtid",
     50            "SELECT"
     51            "  amount"
     52            " ,legitimization_requirement_serial_id"
     53            " FROM aggregation_transient"
     54            " WHERE wire_target_h_payto=$1"
     55            "   AND wtid_raw=$2;");
     56   return GNUNET_PQ_eval_prepared_singleton_select (
     57     pg->conn,
     58     "get_aggregation_transient_by_wtid",
     59     params,
     60     rs);
     61 }