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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 pg_get_wire_fee_summary.c 18 : * @brief Low-level (statement-level) Postgres database access for the exchange 19 : * @author Christian Grothoff 20 : */ 21 : #include "platform.h" 22 : #include "taler_error_codes.h" 23 : #include "taler_dbevents.h" 24 : #include "taler_pq_lib.h" 25 : #include "pg_get_wire_fee_summary.h" 26 : #include "pg_helper.h" 27 : 28 : 29 : /** 30 : * Get summary information about an exchanges wire fee balance. 31 : * 32 : * @param cls the @e cls of this struct with the plugin-specific state 33 : * @param[out] wire_fee_balance set amount the exchange gained in wire fees 34 : * @return transaction status code 35 : */ 36 : enum GNUNET_DB_QueryStatus 37 0 : TAH_PG_get_wire_fee_summary (void *cls, 38 : struct TALER_Amount *wire_fee_balance) 39 : { 40 0 : struct PostgresClosure *pg = cls; 41 0 : struct GNUNET_PQ_QueryParam params[] = { 42 : GNUNET_PQ_query_param_end 43 : }; 44 0 : struct GNUNET_PQ_ResultSpec rs[] = { 45 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("wire_fee_balance", 46 : wire_fee_balance), 47 : GNUNET_PQ_result_spec_end 48 : }; 49 : 50 0 : PREPARE (pg, 51 : "auditor_wire_fee_balance_select", 52 : "SELECT" 53 : " wire_fee_balance" 54 : " FROM auditor_wire_fee_balance"); 55 0 : return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 56 : "auditor_wire_fee_balance_select", 57 : params, 58 : rs); 59 : }