Line data    Source code

       1              : /*
       2              :    This file is part of TALER
       3              :    Copyright (C) 2023, 2025 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 src/backenddb/iterate_transfer_summaries.c
      18              :  * @brief Implementation of the iterate_transfer_summaries function for Postgres
      19              :  * @author Iván Ávalos
      20              :  */
      21              : #include "platform.h"
      22              : #include <taler/taler_pq_lib.h>
      23              : #include "merchant-database/iterate_transfer_summaries.h"
      24              : #include "helper.h"
      25              : 
      26              : /**
      27              :  * Closure for #lookup_transfer_summary_cb().
      28              :  */
      29              : struct LookupTransferSummaryContext
      30              : {
      31              :   /**
      32              :    * Function to call for each order that was aggregated.
      33              :    */
      34              :   TALER_MERCHANTDB_TransferSummaryCallback cb;
      35              : 
      36              :   /**
      37              :    * Closure for @e cb.
      38              :    */
      39              :   void *cb_cls;
      40              : 
      41              :   /**
      42              :    * Plugin context.
      43              :    */
      44              :   struct TALER_MERCHANTDB_PostgresContext *pg;
      45              : 
      46              :   /**
      47              :    * Transaction result.
      48              :    */
      49              :   enum GNUNET_DB_QueryStatus qs;
      50              : };
      51              : 
      52              : 
      53              : /**
      54              :  * Function to be called with the results of a SELECT statement
      55              :  * that has returned @a num_results results.
      56              :  *
      57              :  * @param cls of type `struct LookupTransferSummaryContext *`
      58              :  * @param result the postgres result
      59              :  * @param num_results the number of results in @a result
      60              :  */
      61              : static void
      62            1 : lookup_transfer_summary_cb (void *cls,
      63              :                             PGresult *result,
      64              :                             unsigned int num_results)
      65              : {
      66            1 :   struct LookupTransferSummaryContext *ltdc = cls;
      67              : 
      68            2 :   for (unsigned int i = 0; i<num_results; i++)
      69              :   {
      70              :     char *order_id;
      71              :     struct TALER_Amount deposit_value;
      72              :     struct TALER_Amount deposit_fee;
      73            1 :     struct GNUNET_PQ_ResultSpec rs[] = {
      74            1 :       GNUNET_PQ_result_spec_string ("order_id",
      75              :                                     &order_id),
      76            1 :       TALER_PQ_result_spec_amount_with_currency ("exchange_deposit_value",
      77              :                                                  &deposit_value),
      78            1 :       TALER_PQ_result_spec_amount_with_currency ("exchange_deposit_fee",
      79              :                                                  &deposit_fee),
      80              :       GNUNET_PQ_result_spec_end
      81              :     };
      82              : 
      83            1 :     if (GNUNET_OK !=
      84            1 :         GNUNET_PQ_extract_result (result,
      85              :                                   rs,
      86              :                                   i))
      87              :     {
      88            0 :       GNUNET_break (0);
      89            0 :       ltdc->qs = GNUNET_DB_STATUS_HARD_ERROR;
      90            0 :       return;
      91              :     }
      92            1 :     ltdc->cb (ltdc->cb_cls,
      93              :               order_id,
      94              :               &deposit_value,
      95              :               &deposit_fee);
      96            1 :     GNUNET_PQ_cleanup_result (rs);
      97              :   }
      98            1 :   ltdc->qs = num_results;
      99              : }
     100              : 
     101              : 
     102              : enum GNUNET_DB_QueryStatus
     103            1 : TALER_MERCHANTDB_iterate_transfer_summaries (
     104              :   struct TALER_MERCHANTDB_PostgresContext *pg,
     105              :   const char *exchange_url,
     106              :   const struct TALER_WireTransferIdentifierRawP *wtid,
     107              :   TALER_MERCHANTDB_TransferSummaryCallback cb,
     108              :   void *cb_cls)
     109              : {
     110            1 :   struct GNUNET_PQ_QueryParam params[] = {
     111            1 :     GNUNET_PQ_query_param_string (exchange_url),
     112            1 :     GNUNET_PQ_query_param_auto_from_type (wtid),
     113              :     GNUNET_PQ_query_param_end
     114              :   };
     115            1 :   struct LookupTransferSummaryContext ltdc = {
     116              :     .cb  = cb,
     117              :     .cb_cls = cb_cls,
     118              :     .pg = pg
     119              :   };
     120              :   enum GNUNET_DB_QueryStatus qs;
     121              : 
     122            1 :   GNUNET_assert (NULL != pg->current_merchant_id);
     123            1 :   TMH_PQ_prepare_anon (pg,
     124              :                        "SELECT"
     125              :                        " mct.order_id"
     126              :                        ",mtc.exchange_deposit_value"
     127              :                        ",mtc.exchange_deposit_fee"
     128              :                        " FROM merchant_expected_transfers met"
     129              :                        "  JOIN merchant_expected_transfer_to_coin mtc"
     130              :                        "    USING (expected_credit_serial)"
     131              :                        "  JOIN merchant_deposits dep"
     132              :                        "    USING (deposit_serial)"
     133              :                        "  JOIN merchant_deposit_confirmations mcon"
     134              :                        "    USING (deposit_confirmation_serial)"
     135              :                        "  JOIN merchant_contract_terms mct"
     136              :                        "    USING (order_serial)"
     137              :                        " WHERE met.wtid=$2"
     138              :                        "   AND met.exchange_url=$1");
     139              : 
     140            1 :   qs = GNUNET_PQ_eval_prepared_multi_select (
     141              :     pg->conn,
     142              :     "",
     143              :     params,
     144              :     &lookup_transfer_summary_cb,
     145              :     &ltdc);
     146            1 :   if (0 >= qs)
     147            0 :     return qs;
     148            1 :   return ltdc.qs;
     149              : }