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/*
This file is part of TALER
Copyright (C) 2022 Taler Systems SA
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file pg_get_wire_fee_summary.c
* @brief Low-level (statement-level) Postgres database access for the exchange
* @author Christian Grothoff
*/
#include "platform.h"
#include "taler_error_codes.h"
#include "taler_dbevents.h"
#include "taler_pq_lib.h"
#include "pg_get_wire_fee_summary.h"
#include "pg_helper.h"
/**
* Get summary information about an exchanges wire fee balance.
*
* @param cls the @e cls of this struct with the plugin-specific state
* @param master_pub master public key of the exchange
* @param[out] wire_fee_balance set amount the exchange gained in wire fees
* @return transaction status code
*/
enum GNUNET_DB_QueryStatus
TAH_PG_get_wire_fee_summary (void *cls,
const struct TALER_MasterPublicKeyP *master_pub,
struct TALER_Amount *wire_fee_balance)
{
struct PostgresClosure *pg = cls;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (master_pub),
GNUNET_PQ_query_param_end
};
struct GNUNET_PQ_ResultSpec rs[] = {
TALER_PQ_RESULT_SPEC_AMOUNT ("wire_fee_balance",
wire_fee_balance),
GNUNET_PQ_result_spec_end
};
PREPARE (pg,
"auditor_wire_fee_balance_select",
"SELECT"
" wire_fee_balance_val"
",wire_fee_balance_frac"
" FROM auditor_wire_fee_balance"
" WHERE master_pub=$1;");
return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
"auditor_wire_fee_balance_select",
params,
rs);
}
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