merchant

Merchant backend to process payments, run by merchants
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pg_lookup_donau_keys.c (2465B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2024 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_donau_keys.c
     18  * @brief Implementation of the lookup_donau_keys function for Postgres
     19  * @author Bohdan Potuzhnyi
     20  * @author Vlada Svirsh
     21  */
     22 #include "platform.h"
     23 #include <taler/taler_error_codes.h>
     24 #include <taler/taler_dbevents.h>
     25 #include <taler/taler_pq_lib.h>
     26 #include "donau/donau_service.h"
     27 #include "pg_lookup_donau_keys.h"
     28 #include "pg_helper.h"
     29 
     30 enum GNUNET_DB_QueryStatus
     31 TMH_PG_lookup_donau_keys (void *cls,
     32                           const char *donau_url,
     33                           struct GNUNET_TIME_Absolute *first_retry,
     34                           struct DONAU_Keys **keys)
     35 {
     36   struct PostgresClosure *pg = cls;
     37   struct GNUNET_PQ_QueryParam params[] = {
     38     GNUNET_PQ_query_param_string (donau_url),
     39     GNUNET_PQ_query_param_end
     40   };
     41   json_t *jkeys;
     42   struct GNUNET_PQ_ResultSpec rs[] = {
     43     GNUNET_PQ_result_spec_absolute_time ("first_retry",
     44                                          first_retry),
     45     TALER_PQ_result_spec_json ("keys_json",
     46                                &jkeys),
     47     GNUNET_PQ_result_spec_end
     48   };
     49   enum GNUNET_DB_QueryStatus qs;
     50 
     51   check_connection (pg);
     52   PREPARE (pg,
     53            "lookup_donau_keys",
     54            "SELECT"
     55            " first_retry"
     56            ",keys_json::TEXT"
     57            " FROM merchant_donau_keys"
     58            " WHERE donau_url=$1;");
     59   qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     60                                                  "lookup_donau_keys",
     61                                                  params,
     62                                                  rs);
     63   if (qs <= 0)
     64     return qs;
     65   *keys = DONAU_keys_from_json (jkeys);
     66   json_decref (jkeys);
     67   if (NULL == *keys)
     68   {
     69     GNUNET_break (0);
     70     return GNUNET_DB_STATUS_HARD_ERROR;
     71   }
     72   return qs;
     73 }