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           83 : 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           83 :   struct PostgresClosure *pg = cls;
      36           83 :   struct GNUNET_PQ_QueryParam params[] = {
      37           83 :     GNUNET_PQ_query_param_string (exchange_url),
      38              :     GNUNET_PQ_query_param_end
      39              :   };
      40              :   json_t *jkeys;
      41           83 :   struct GNUNET_PQ_ResultSpec rs[] = {
      42           83 :     GNUNET_PQ_result_spec_absolute_time ("first_retry",
      43              :                                          first_retry),
      44           83 :     TALER_PQ_result_spec_json ("keys_json",
      45              :                                &jkeys),
      46              :     GNUNET_PQ_result_spec_end
      47              :   };
      48              :   enum GNUNET_DB_QueryStatus qs;
      49              : 
      50           83 :   check_connection (pg);
      51           83 :   PREPARE (pg,
      52              :            "select_exchange_keys",
      53              :            "SELECT"
      54              :            " first_retry"
      55              :            ",keys_json::TEXT"
      56              :            " FROM merchant_exchange_keys"
      57              :            " WHERE exchange_url=$1;");
      58           83 :   qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
      59              :                                                  "select_exchange_keys",
      60              :                                                  params,
      61              :                                                  rs);
      62           83 :   if (qs <= 0)
      63           44 :     return qs;
      64           39 :   *keys = TALER_EXCHANGE_keys_from_json (jkeys);
      65           39 :   json_decref (jkeys);
      66           39 :   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           39 :   return qs;
      73              : }