Line data    Source code

       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_select_exchange_keys.c
      18             :  * @brief Implementation of the select_exchange_keys function for Postgres
      19             :  * @author Christian Grothoff
      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_select_exchange_keys.h"
      26             : #include "pg_helper.h"
      27             : 
      28             : 
      29             : enum GNUNET_DB_QueryStatus
      30         136 : TMH_PG_select_exchange_keys (void *cls,
      31             :                              const char *exchange_url,
      32             :                              struct GNUNET_TIME_Absolute *first_retry,
      33             :                              struct TALER_EXCHANGE_Keys **keys)
      34             : {
      35         136 :   struct PostgresClosure *pg = cls;
      36         136 :   struct GNUNET_PQ_QueryParam params[] = {
      37         136 :     GNUNET_PQ_query_param_string (exchange_url),
      38             :     GNUNET_PQ_query_param_end
      39             :   };
      40             :   json_t *jkeys;
      41         136 :   struct GNUNET_PQ_ResultSpec rs[] = {
      42         136 :     GNUNET_PQ_result_spec_absolute_time ("first_retry",
      43             :                                          first_retry),
      44         136 :     TALER_PQ_result_spec_json ("keys_json",
      45             :                                &jkeys),
      46             :     GNUNET_PQ_result_spec_end
      47             :   };
      48             :   enum GNUNET_DB_QueryStatus qs;
      49             : 
      50         136 :   check_connection (pg);
      51         136 :   PREPARE (pg,
      52             :            "select_exchange_keys",
      53             :            "SELECT"
      54             :            " first_retry"
      55             :            ",keys_json"
      56             :            " FROM merchant_exchange_keys"
      57             :            " WHERE exchange_url=$1;");
      58         136 :   qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
      59             :                                                  "select_exchange_keys",
      60             :                                                  params,
      61             :                                                  rs);
      62         136 :   if (qs <= 0)
      63          71 :     return qs;
      64          65 :   *keys = TALER_EXCHANGE_keys_from_json (jkeys);
      65          65 :   json_decref (jkeys);
      66          65 :   if (NULL == *keys)
      67             :   {
      68             :     /* malformed /keys in cache, maybe format change. Just ignore */
      69           0 :     GNUNET_break (0);
      70           0 :     return GNUNET_DB_STATUS_SUCCESS_NO_RESULTS;
      71             :   }
      72          65 :   return qs;
      73             : }