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Base system with REST service to issue digital coins, run by the payment service provider
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pg_select_purse_merge.c (2941B)

      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_select_purse_merge.c
     18  * @brief Implementation of the select_purse_merge 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_select_purse_merge.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TEH_PG_select_purse_merge (
     31   void *cls,
     32   const struct TALER_PurseContractPublicKeyP *purse_pub,
     33   struct TALER_PurseMergeSignatureP *merge_sig,
     34   struct GNUNET_TIME_Timestamp *merge_timestamp,
     35   char **partner_url,
     36   struct TALER_ReservePublicKeyP *reserve_pub,
     37   bool *refunded)
     38 {
     39   struct PostgresClosure *pg = cls;
     40   struct GNUNET_PQ_QueryParam params[] = {
     41     GNUNET_PQ_query_param_auto_from_type (purse_pub),
     42     GNUNET_PQ_query_param_end
     43   };
     44   struct GNUNET_PQ_ResultSpec rs[] = {
     45     GNUNET_PQ_result_spec_auto_from_type ("merge_sig",
     46                                           merge_sig),
     47     GNUNET_PQ_result_spec_auto_from_type ("reserve_pub",
     48                                           reserve_pub),
     49     GNUNET_PQ_result_spec_timestamp ("merge_timestamp",
     50                                      merge_timestamp),
     51     GNUNET_PQ_result_spec_allow_null (
     52       GNUNET_PQ_result_spec_string ("partner_base_url",
     53                                     partner_url),
     54       NULL),
     55     GNUNET_PQ_result_spec_allow_null (
     56       GNUNET_PQ_result_spec_bool ("refunded",
     57                                   refunded),
     58       NULL),
     59     GNUNET_PQ_result_spec_end
     60   };
     61 
     62   *partner_url = NULL;
     63   *refunded = false;
     64   PREPARE (pg,
     65            "select_purse_merge",
     66            "SELECT "
     67            " pm.reserve_pub"
     68            ",pm.merge_sig"
     69            ",pm.merge_timestamp"
     70            ",pr.partner_base_url"
     71            ",pd.refunded"
     72            " FROM purse_merges pm"
     73            " LEFT JOIN purse_decision pd USING (purse_pub)"
     74            " LEFT JOIN partners pr USING (partner_serial_id)"
     75            " WHERE pm.purse_pub=$1;");
     76   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     77                                                    "select_purse_merge",
     78                                                    params,
     79                                                    rs);
     80 }