exchange

Base system with REST service to issue digital coins, run by the payment service provider
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pg_get_global_fee.c (3442B)

      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_get_global_fee.c
     18  * @brief Implementation of the get_global_fee 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_global_fee.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TEH_PG_get_global_fee (void *cls,
     31                        struct GNUNET_TIME_Timestamp date,
     32                        struct GNUNET_TIME_Timestamp *start_date,
     33                        struct GNUNET_TIME_Timestamp *end_date,
     34                        struct TALER_GlobalFeeSet *fees,
     35                        struct GNUNET_TIME_Relative *purse_timeout,
     36                        struct GNUNET_TIME_Relative *history_expiration,
     37                        uint32_t *purse_account_limit,
     38                        struct TALER_MasterSignatureP *master_sig)
     39 {
     40   struct PostgresClosure *pg = cls;
     41   struct GNUNET_PQ_QueryParam params[] = {
     42     GNUNET_PQ_query_param_timestamp (&date),
     43     GNUNET_PQ_query_param_end
     44   };
     45   struct GNUNET_PQ_ResultSpec rs[] = {
     46     GNUNET_PQ_result_spec_timestamp ("start_date",
     47                                      start_date),
     48     GNUNET_PQ_result_spec_timestamp ("end_date",
     49                                      end_date),
     50     TALER_PQ_RESULT_SPEC_AMOUNT ("history_fee",
     51                                  &fees->history),
     52     TALER_PQ_RESULT_SPEC_AMOUNT ("account_fee",
     53                                  &fees->account),
     54     TALER_PQ_RESULT_SPEC_AMOUNT ("purse_fee",
     55                                  &fees->purse),
     56     GNUNET_PQ_result_spec_relative_time ("purse_timeout",
     57                                          purse_timeout),
     58     GNUNET_PQ_result_spec_relative_time ("history_expiration",
     59                                          history_expiration),
     60     GNUNET_PQ_result_spec_uint32 ("purse_account_limit",
     61                                   purse_account_limit),
     62     GNUNET_PQ_result_spec_auto_from_type ("master_sig",
     63                                           master_sig),
     64     GNUNET_PQ_result_spec_end
     65   };
     66 
     67   PREPARE (pg,
     68            "get_global_fee",
     69            "SELECT "
     70            " start_date"
     71            ",end_date"
     72            ",history_fee"
     73            ",account_fee"
     74            ",purse_fee"
     75            ",purse_timeout"
     76            ",history_expiration"
     77            ",purse_account_limit"
     78            ",master_sig"
     79            " FROM global_fee"
     80            " WHERE start_date <= $1"
     81            "   AND end_date > $1;");
     82   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     83                                                    "get_global_fee",
     84                                                    params,
     85                                                    rs);
     86 }