exchange

Base system with REST service to issue digital coins, run by the payment service provider
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pg_get_purse_request.c (2997B)

      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_template.c
     18  * @brief Implementation of the template 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_get_purse_request.h"
     26 #include "pg_helper.h"
     27 
     28 enum GNUNET_DB_QueryStatus
     29 TEH_PG_get_purse_request (
     30   void *cls,
     31   const struct TALER_PurseContractPublicKeyP *purse_pub,
     32   struct TALER_PurseMergePublicKeyP *merge_pub,
     33   struct GNUNET_TIME_Timestamp *purse_expiration,
     34   struct TALER_PrivateContractHashP *h_contract_terms,
     35   uint32_t *age_limit,
     36   struct TALER_Amount *target_amount,
     37   struct TALER_Amount *balance,
     38   struct TALER_PurseContractSignatureP *purse_sig)
     39 {
     40   struct PostgresClosure *pg = cls;
     41   struct GNUNET_PQ_QueryParam params[] = {
     42     GNUNET_PQ_query_param_auto_from_type (purse_pub),
     43     GNUNET_PQ_query_param_end
     44   };
     45   struct GNUNET_PQ_ResultSpec rs[] = {
     46     GNUNET_PQ_result_spec_auto_from_type ("merge_pub",
     47                                           merge_pub),
     48     GNUNET_PQ_result_spec_timestamp ("purse_expiration",
     49                                      purse_expiration),
     50     GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms",
     51                                           h_contract_terms),
     52     GNUNET_PQ_result_spec_uint32 ("age_limit",
     53                                   age_limit),
     54     TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
     55                                  target_amount),
     56     TALER_PQ_RESULT_SPEC_AMOUNT ("balance",
     57                                  balance),
     58     GNUNET_PQ_result_spec_auto_from_type ("purse_sig",
     59                                           purse_sig),
     60     GNUNET_PQ_result_spec_end
     61   };
     62 
     63   PREPARE (pg,
     64            "get_purse_request",
     65            "SELECT "
     66            " merge_pub"
     67            ",purse_expiration"
     68            ",h_contract_terms"
     69            ",age_limit"
     70            ",amount_with_fee"
     71            ",balance"
     72            ",purse_sig"
     73            " FROM purse_requests"
     74            " WHERE purse_pub=$1;");
     75   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     76                                                    "get_purse_request",
     77                                                    params,
     78                                                    rs);
     79 }