select_donau_instances_filtered.h (2256B)
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 src/include/merchant-database/select_donau_instances_filtered.h 18 * @brief implementation of the select_donau_instance function for Postgres 19 * @author Bohdan Potuzhnyi 20 * @author Vlada Svirsh 21 */ 22 #ifndef MERCHANT_DATABASE_SELECT_DONAU_INSTANCES_FILTERED_H 23 #define MERCHANT_DATABASE_SELECT_DONAU_INSTANCES_FILTERED_H 24 25 #include <taler/taler_util.h> 26 #include <taler/taler_json_lib.h> 27 #include "merchantdb_lib.h" 28 #include "donau/donau_util.h" 29 30 31 struct TALER_MERCHANTDB_PostgresContext; 32 /* Callback typedefs */ 33 /** 34 * Callback function typically used by `select_donau_instances` to handle 35 * the details of each Donau instance retrieved from the database. 36 * 37 * @param cls Closure to pass additional context or data to the callback function. 38 * @param donau_url The URL of the Donau instance. 39 */ 40 typedef void 41 (*TALER_MERCHANTDB_DonauInstanceFilteredCallback)( 42 void *cls, 43 const char *donau_url 44 ); 45 46 /** 47 * Select multiple Donau instances from the database. 48 * 49 * @param pg database context 50 * @param currency currency to filter donau instances by 51 * @param cb callback function to call with each result 52 * @param cb_cls closure for the callback 53 * @return status of the PG 54 */ 55 enum GNUNET_DB_QueryStatus 56 TALER_MERCHANTDB_select_donau_instances_filtered (struct TALER_MERCHANTDB_PostgresContext *pg, 57 const char *currency, 58 TALER_MERCHANTDB_DonauInstanceFilteredCallback cb, 59 void *cb_cls); 60 61 #endif