Line data    Source code

       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 exchangedb/pg_do_refund.c
      18              :  * @brief Implementation of the do_refund function for Postgres
      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_do_refund.h"
      26              : #include "pg_helper.h"
      27              : #include "pg_compute_shard.h"
      28              : 
      29              : 
      30              : enum GNUNET_DB_QueryStatus
      31           14 : TEH_PG_do_refund (
      32              :   void *cls,
      33              :   const struct TALER_EXCHANGEDB_Refund *refund,
      34              :   const struct TALER_Amount *deposit_fee,
      35              :   uint64_t known_coin_id,
      36              :   bool *not_found,
      37              :   bool *refund_ok,
      38              :   bool *gone,
      39              :   bool *conflict)
      40              : {
      41           14 :   struct PostgresClosure *pg = cls;
      42           14 :   uint64_t deposit_shard = TEH_PG_compute_shard (&refund->details.merchant_pub);
      43              :   struct TALER_Amount amount_without_fee;
      44           14 :   struct GNUNET_PQ_QueryParam params[] = {
      45           14 :     TALER_PQ_query_param_amount (pg->conn,
      46              :                                  &refund->details.refund_amount),
      47           14 :     TALER_PQ_query_param_amount (pg->conn,
      48              :                                  &amount_without_fee),
      49           14 :     TALER_PQ_query_param_amount (pg->conn,
      50              :                                  deposit_fee),
      51           14 :     GNUNET_PQ_query_param_auto_from_type (&refund->details.h_contract_terms),
      52           14 :     GNUNET_PQ_query_param_uint64 (&refund->details.rtransaction_id),
      53           14 :     GNUNET_PQ_query_param_uint64 (&deposit_shard),
      54           14 :     GNUNET_PQ_query_param_uint64 (&known_coin_id),
      55           14 :     GNUNET_PQ_query_param_auto_from_type (&refund->coin.coin_pub),
      56           14 :     GNUNET_PQ_query_param_auto_from_type (&refund->details.merchant_pub),
      57           14 :     GNUNET_PQ_query_param_auto_from_type (&refund->details.merchant_sig),
      58              :     GNUNET_PQ_query_param_end
      59              :   };
      60           14 :   struct GNUNET_PQ_ResultSpec rs[] = {
      61           14 :     GNUNET_PQ_result_spec_bool ("not_found",
      62              :                                 not_found),
      63           14 :     GNUNET_PQ_result_spec_bool ("refund_ok",
      64              :                                 refund_ok),
      65           14 :     GNUNET_PQ_result_spec_bool ("gone",
      66              :                                 gone),
      67           14 :     GNUNET_PQ_result_spec_bool ("conflict",
      68              :                                 conflict),
      69              :     GNUNET_PQ_result_spec_end
      70              :   };
      71              : 
      72           14 :   if (0 >
      73           14 :       TALER_amount_subtract (&amount_without_fee,
      74              :                              &refund->details.refund_amount,
      75              :                              &refund->details.refund_fee))
      76              :   {
      77            0 :     GNUNET_break (0);
      78            0 :     return GNUNET_DB_STATUS_HARD_ERROR;
      79              :   }
      80           14 :   PREPARE (pg,
      81              :            "call_refund",
      82              :            "SELECT "
      83              :            " out_not_found AS not_found"
      84              :            ",out_refund_ok AS refund_ok"
      85              :            ",out_gone AS gone"
      86              :            ",out_conflict AS conflict"
      87              :            " FROM exchange_do_refund"
      88              :            " ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10);");
      89           14 :   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
      90              :                                                    "call_refund",
      91              :                                                    params,
      92              :                                                    rs);
      93              : }