select_exchanges.h (2201B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2026 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 src/include/merchant-database/select_exchanges.h 18 * @brief implementation of the select_exchanges function for Postgres 19 * @author Christian Grothoff 20 */ 21 #ifndef MERCHANT_DATABASE_SELECT_EXCHANGES_H 22 #define MERCHANT_DATABASE_SELECT_EXCHANGES_H 23 24 #include <taler/taler_util.h> 25 #include <taler/taler_json_lib.h> 26 #include "merchantdb_lib.h" 27 28 29 struct TALER_MERCHANTDB_PostgresContext; 30 /* Callback typedefs */ 31 /** 32 * Function called about the ``/keys`` status of every exchange 33 * we are working with. 34 * 35 * @param cls closure 36 * @param exchange_url base URL of the exchange 37 * @param next_download when will be the next download 38 * @param keys_expiration when does the current ``/keys`` response expire 39 * @param http_status last HTTP status from ``/keys`` 40 * @param ec last error code from fetching ``/keys`` 41 */ 42 typedef void 43 (*TALER_MERCHANTDB_ExchangesCallback)( 44 void *cls, 45 const char *exchange_url, 46 struct GNUNET_TIME_Absolute next_download, 47 struct GNUNET_TIME_Absolute keys_expiration, 48 unsigned int http_status, 49 enum TALER_ErrorCode ec); 50 51 /** 52 * Call @a cb on each exchange we have in the database. 53 * 54 * @param pg database context 55 * @param cb callback to invoke 56 * @param cb_cls closure for @a cb 57 * @return transaction status code 58 */ 59 enum GNUNET_DB_QueryStatus 60 TALER_MERCHANTDB_select_exchanges (struct TALER_MERCHANTDB_PostgresContext *pg, 61 TALER_MERCHANTDB_ExchangesCallback cb, 62 void *cb_cls); 63 64 65 #endif