lookup_units.h (1927B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2025 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/lookup_units.h 18 * @brief implementation of the lookup_units function for Postgres 19 * @author Bohdan Potuzhnyi 20 */ 21 #ifndef MERCHANT_DATABASE_LOOKUP_UNITS_H 22 #define MERCHANT_DATABASE_LOOKUP_UNITS_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 * Typically called by `lookup_units`. 33 * 34 * @param cls closure 35 * @param unit_serial database identifier 36 * @param ud measurement unit details (borrowed) 37 */ 38 typedef void 39 (*TALER_MERCHANTDB_UnitsCallback)( 40 void *cls, 41 uint64_t unit_serial, 42 const struct TALER_MERCHANTDB_UnitDetails *ud); 43 44 /** 45 * Lookup all measurement units for an instance. 46 * 47 * @param pg database context 48 * @param instance_id instance to fetch units for 49 * @param cb function to call with each unit 50 * @param cb_cls closure for @a cb 51 * @return database result code 52 */ 53 enum GNUNET_DB_QueryStatus 54 TALER_MERCHANTDB_lookup_units (struct TALER_MERCHANTDB_PostgresContext *pg, 55 const char *instance_id, 56 TALER_MERCHANTDB_UnitsCallback cb, 57 void *cb_cls); 58 59 #endif