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Base system with REST service to issue digital coins, run by the payment service provider
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pg_insert_balance.c (3088B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2024 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_insert_balance.c
     18  * @brief Implementation of the insert_balance function
     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_insert_balance.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TAH_PG_insert_balance (void *cls,
     31                        const char *balance_key,
     32                        const struct TALER_Amount *balance_value,
     33                        ...)
     34 {
     35   struct PostgresClosure *pg = cls;
     36   unsigned int cnt = 1;
     37   va_list ap;
     38 
     39   va_start (ap,
     40             balance_value);
     41   while (NULL != va_arg (ap,
     42                          const char *))
     43   {
     44     cnt++;
     45     (void) va_arg (ap,
     46                    const struct TALER_Amount *);
     47   }
     48   va_end (ap);
     49   {
     50     const char *keys[cnt];
     51     struct TALER_Amount amounts[cnt];
     52     unsigned int off = 1;
     53     struct GNUNET_PQ_QueryParam params[] = {
     54       GNUNET_PQ_query_param_array_ptrs_string (cnt,
     55                                                keys,
     56                                                pg->conn),
     57       TALER_PQ_query_param_array_amount (cnt,
     58                                          amounts,
     59                                          pg->conn),
     60       GNUNET_PQ_query_param_end
     61     };
     62     enum GNUNET_DB_QueryStatus qs;
     63 
     64     keys[0] = balance_key;
     65     amounts[0] = *balance_value;
     66 
     67     va_start (ap,
     68               balance_value);
     69     while (off < cnt)
     70     {
     71       keys[off] = va_arg (ap,
     72                           const char *);
     73       amounts[off] = *va_arg (ap,
     74                               const struct TALER_Amount *);
     75       off++;
     76     }
     77     GNUNET_assert (NULL == va_arg (ap,
     78                                    const char *));
     79     va_end (ap);
     80 
     81     PREPARE (pg,
     82              "auditor_balance_insert",
     83              "INSERT INTO auditor_balances "
     84              "(balance_key"
     85              ",balance_value.val"
     86              ",balance_value.frac"
     87              ") SELECT *"
     88              " FROM UNNEST (CAST($1 AS TEXT[]),"
     89              "              CAST($2 AS taler_amount[]))"
     90              " ON CONFLICT DO NOTHING;");
     91     qs = GNUNET_PQ_eval_prepared_non_select (pg->conn,
     92                                              "auditor_balance_insert",
     93                                              params);
     94     GNUNET_PQ_cleanup_query_params_closures (params);
     95     return qs;
     96   }
     97 }