diff options
Diffstat (limited to 'src/exchangedb/pg_get_reserve_balance.c')
-rw-r--r-- | src/exchangedb/pg_get_reserve_balance.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/exchangedb/pg_get_reserve_balance.c b/src/exchangedb/pg_get_reserve_balance.c new file mode 100644 index 000000000..140bf3b70 --- /dev/null +++ b/src/exchangedb/pg_get_reserve_balance.c @@ -0,0 +1,55 @@ +/* + 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 exchangedb/pg_get_reserve_balance.c + * @brief Implementation of the get_reserve_balance function for Postgres + * @author Christian Grothoff + */ +#include "platform.h" +#include "taler_error_codes.h" +#include "taler_dbevents.h" +#include "taler_pq_lib.h" +#include "pg_get_reserve_balance.h" +#include "pg_helper.h" + +enum GNUNET_DB_QueryStatus +TEH_PG_get_reserve_balance (void *cls, + const struct TALER_ReservePublicKeyP *reserve_pub, + struct TALER_Amount *balance) +{ + struct PostgresClosure *pg = cls; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_auto_from_type (reserve_pub), + GNUNET_PQ_query_param_end + }; + struct GNUNET_PQ_ResultSpec rs[] = { + TALER_PQ_result_spec_amount ("current_balance", + pg->currency, + balance), + GNUNET_PQ_result_spec_end + }; + + PREPARE (pg, + "get_reserve_balance", + "SELECT" + " current_balance" + " FROM reserves" + " WHERE reserve_pub=$1;"); + return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, + "get_reserve_balance", + params, + rs); +} |