exchange

Base system with REST service to issue digital coins, run by the payment service provider
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pg_get_denomination_balance.c (2566B)

      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 pg_get_denomination_balance.c
     18  * @brief Low-level (statement-level) Postgres database access for the exchange
     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_get_denomination_balance.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TAH_PG_get_denomination_balance (
     31   void *cls,
     32   const struct TALER_DenominationHashP *denom_pub_hash,
     33   struct TALER_AUDITORDB_DenominationCirculationData *dcd)
     34 {
     35   struct PostgresClosure *pg = cls;
     36   struct GNUNET_PQ_QueryParam params[] = {
     37     GNUNET_PQ_query_param_auto_from_type (denom_pub_hash),
     38     GNUNET_PQ_query_param_end
     39   };
     40   struct GNUNET_PQ_ResultSpec rs[] = {
     41     TALER_PQ_RESULT_SPEC_AMOUNT ("denom_balance",
     42                                  &dcd->denom_balance),
     43     TALER_PQ_RESULT_SPEC_AMOUNT ("denom_loss",
     44                                  &dcd->denom_loss),
     45     TALER_PQ_RESULT_SPEC_AMOUNT ("denom_risk",
     46                                  &dcd->denom_risk),
     47     TALER_PQ_RESULT_SPEC_AMOUNT ("recoup_loss",
     48                                  &dcd->recoup_loss),
     49     GNUNET_PQ_result_spec_uint64 ("num_issued",
     50                                   &dcd->num_issued),
     51     GNUNET_PQ_result_spec_end
     52   };
     53 
     54   PREPARE (pg,
     55            "auditor_denomination_pending_select",
     56            "SELECT"
     57            " denom_balance"
     58            ",denom_loss"
     59            ",num_issued"
     60            ",denom_risk"
     61            ",recoup_loss"
     62            " FROM auditor_denomination_pending"
     63            " WHERE denom_pub_hash=$1");
     64   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     65                                                    "auditor_denomination_pending_select",
     66                                                    params,
     67                                                    rs);
     68 }