Line data    Source code

       1             : /*
       2             :    This file is part of TALER
       3             :    Copyright (C) 2023 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 auditordb/pg_update_balance.c
      18             :  * @brief Implementation of the update_balance function for Postgres
      19             :  * @author Christian Grothoff
      20             :  */
      21             : #include "platform.h"
      22             : #include "taler_error_codes.h"
      23             : #include "taler_dbevents.h"
      24             : #include "taler_pq_lib.h"
      25             : #include "pg_update_balance.h"
      26             : #include "pg_helper.h"
      27             : 
      28             : 
      29             : enum GNUNET_DB_QueryStatus
      30         441 : TAH_PG_update_balance (
      31             :   void *cls,
      32             :   const char *balance_key,
      33             :   const struct TALER_Amount *balance_amount,
      34             :   ...)
      35             : {
      36         441 :   struct PostgresClosure *pg = cls;
      37         441 :   unsigned int cnt = 1;
      38             :   va_list ap;
      39             : 
      40         441 :   va_start (ap,
      41             :             balance_amount);
      42        3193 :   while (NULL != va_arg (ap,
      43             :                          const char *))
      44             :   {
      45        2752 :     cnt++;
      46        2752 :     (void) va_arg (ap,
      47             :                    const struct TALER_Amount *);
      48             :   }
      49         441 :   va_end (ap);
      50         441 :   {
      51         441 :     const char *keys[cnt];
      52         441 :     struct TALER_Amount amounts[cnt];
      53         441 :     unsigned int off = 1;
      54         441 :     struct GNUNET_PQ_QueryParam params[] = {
      55         441 :       GNUNET_PQ_query_param_array_ptrs_string (cnt,
      56             :                                                keys,
      57             :                                                pg->conn),
      58         441 :       TALER_PQ_query_param_array_amount (cnt,
      59             :                                          amounts,
      60             :                                          pg->conn),
      61             :       GNUNET_PQ_query_param_end
      62             :     };
      63             :     enum GNUNET_DB_QueryStatus qs;
      64             : 
      65         441 :     keys[0] = balance_key;
      66         441 :     amounts[0] = *balance_amount;
      67             : 
      68         441 :     va_start (ap,
      69             :               balance_amount);
      70        3193 :     while (off < cnt)
      71             :     {
      72        2752 :       keys[off] = va_arg (ap,
      73             :                           const char *);
      74        2752 :       amounts[off] = *va_arg (ap,
      75             :                               const struct TALER_Amount *);
      76        2752 :       off++;
      77             :     }
      78         441 :     GNUNET_assert (NULL == va_arg (ap,
      79             :                                    const char *));
      80         441 :     va_end (ap);
      81             : 
      82         441 :     PREPARE (pg,
      83             :              "auditor_balance_update",
      84             :              "UPDATE auditor_balances"
      85             :              "  SET balance_value.val=data.val"
      86             :              "     ,balance_value.frac=data.frac"
      87             :              "  FROM ("
      88             :              "    SELECT *"
      89             :              "      FROM UNNEST (CAST($1 AS TEXT[]),"
      90             :              "                   CAST($2 AS taler_amount[]))"
      91             :              "      AS t(key,val,frac)"
      92             :              "  ) AS data"
      93             :              " WHERE auditor_balances.balance_key=data.key;");
      94         441 :     qs = GNUNET_PQ_eval_prepared_non_select (pg->conn,
      95             :                                              "auditor_balance_update",
      96             :                                              params);
      97         441 :     GNUNET_PQ_cleanup_query_params_closures (params);
      98         441 :     return qs;
      99             :   }
     100             : }