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          16 : 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          16 :   struct PostgresClosure *pg = cls;
      42          16 :   uint64_t deposit_shard = TEH_PG_compute_shard (&refund->details.merchant_pub);
      43             :   struct TALER_Amount amount_without_fee;
      44          16 :   struct GNUNET_PQ_QueryParam params[] = {
      45          16 :     TALER_PQ_query_param_amount (pg->conn,
      46             :                                  &refund->details.refund_amount),
      47          16 :     TALER_PQ_query_param_amount (pg->conn,
      48             :                                  &amount_without_fee),
      49          16 :     TALER_PQ_query_param_amount (pg->conn,
      50             :                                  deposit_fee),
      51          16 :     GNUNET_PQ_query_param_auto_from_type (&refund->details.h_contract_terms),
      52          16 :     GNUNET_PQ_query_param_uint64 (&refund->details.rtransaction_id),
      53          16 :     GNUNET_PQ_query_param_uint64 (&deposit_shard),
      54          16 :     GNUNET_PQ_query_param_uint64 (&known_coin_id),
      55          16 :     GNUNET_PQ_query_param_auto_from_type (&refund->coin.coin_pub),
      56          16 :     GNUNET_PQ_query_param_auto_from_type (&refund->details.merchant_pub),
      57          16 :     GNUNET_PQ_query_param_auto_from_type (&refund->details.merchant_sig),
      58             :     GNUNET_PQ_query_param_end
      59             :   };
      60          16 :   struct GNUNET_PQ_ResultSpec rs[] = {
      61          16 :     GNUNET_PQ_result_spec_bool ("not_found",
      62             :                                 not_found),
      63          16 :     GNUNET_PQ_result_spec_bool ("refund_ok",
      64             :                                 refund_ok),
      65          16 :     GNUNET_PQ_result_spec_bool ("gone",
      66             :                                 gone),
      67          16 :     GNUNET_PQ_result_spec_bool ("conflict",
      68             :                                 conflict),
      69             :     GNUNET_PQ_result_spec_end
      70             :   };
      71             : 
      72          16 :   if (0 >
      73          16 :       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          16 :   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          16 :   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
      90             :                                                    "call_refund",
      91             :                                                    params,
      92             :                                                    rs);
      93             : }