merchant

Merchant backend to process payments, run by merchants
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pg_lookup_order_summary.c (2879B)

      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 backenddb/pg_lookup_order_summary.c
     18  * @brief Implementation of the lookup_order_summary function for Postgres
     19  * @author Iván Ávalos
     20  */
     21 #include "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_lookup_order_summary.h"
     26 #include "pg_helper.h"
     27 
     28 enum GNUNET_DB_QueryStatus
     29 TMH_PG_lookup_order_summary (void *cls,
     30                              const char *instance_id,
     31                              const char *order_id,
     32                              struct GNUNET_TIME_Timestamp *timestamp,
     33                              uint64_t *order_serial)
     34 {
     35   struct PostgresClosure *pg = cls;
     36   struct GNUNET_PQ_QueryParam params[] = {
     37     GNUNET_PQ_query_param_string (instance_id),
     38     GNUNET_PQ_query_param_string (order_id),
     39     GNUNET_PQ_query_param_end
     40   };
     41   struct GNUNET_PQ_ResultSpec rs[] = {
     42     GNUNET_PQ_result_spec_uint64 ("order_serial",
     43                                   order_serial),
     44     GNUNET_PQ_result_spec_timestamp ("creation_time",
     45                                      timestamp),
     46     GNUNET_PQ_result_spec_end
     47   };
     48 
     49   check_connection (pg);
     50   PREPARE (pg,
     51            "lookup_order_summary",
     52            "(SELECT"
     53            " creation_time"
     54            ",order_serial"
     55            " FROM merchant_contract_terms"
     56            " WHERE merchant_contract_terms.merchant_serial="
     57            "     (SELECT merchant_serial "
     58            "        FROM merchant_instances"
     59            "        WHERE merchant_id=$1)"
     60            "   AND merchant_contract_terms.order_id=$2)"
     61            "UNION"
     62            "(SELECT"
     63            " creation_time"
     64            ",order_serial"
     65            " FROM merchant_orders"
     66            " WHERE merchant_orders.merchant_serial="
     67            "     (SELECT merchant_serial "
     68            "        FROM merchant_instances"
     69            "        WHERE merchant_id=$1)"
     70            "   AND merchant_orders.order_id=$2)");
     71   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     72                                                    "lookup_order_summary",
     73                                                    params,
     74                                                    rs);
     75 }