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Diffstat (limited to 'src/auditordb/pg_update_balance.c')
-rw-r--r-- | src/auditordb/pg_update_balance.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/src/auditordb/pg_update_balance.c b/src/auditordb/pg_update_balance.c new file mode 100644 index 000000000..eff03056b --- /dev/null +++ b/src/auditordb/pg_update_balance.c @@ -0,0 +1,100 @@ +/* + This file is part of TALER + Copyright (C) 2023 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 auditordb/pg_update_balance.c + * @brief Implementation of the update_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_update_balance.h" +#include "pg_helper.h" + + +enum GNUNET_DB_QueryStatus +TAH_PG_update_balance ( + void *cls, + const char *balance_key, + const struct TALER_Amount *balance_amount, + ...) +{ + struct PostgresClosure *pg = cls; + unsigned int cnt = 1; + va_list ap; + + va_start (ap, + balance_amount); + while (NULL != va_arg (ap, + const char *)) + { + cnt++; + (void) va_arg (ap, + const struct TALER_Amount *); + } + va_end (ap); + { + const char *keys[cnt]; + struct TALER_Amount amounts[cnt]; + unsigned int off = 1; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_array_ptrs_string (cnt, + keys, + pg->conn), + TALER_PQ_query_param_array_amount (cnt, + amounts, + pg->conn), + GNUNET_PQ_query_param_end + }; + enum GNUNET_DB_QueryStatus qs; + + keys[0] = balance_key; + amounts[0] = *balance_amount; + + va_start (ap, + balance_amount); + while (off < cnt) + { + keys[off] = va_arg (ap, + const char *); + amounts[off] = *va_arg (ap, + const struct TALER_Amount *); + off++; + } + GNUNET_assert (NULL == va_arg (ap, + const char *)); + va_end (ap); + + PREPARE (pg, + "auditor_balance_update", + "UPDATE auditor_balances" + " SET balance_value.val=data.val" + " ,balance_value.frac=data.frac" + " FROM (" + " SELECT *" + " FROM UNNEST (CAST($1 AS TEXT[])," + " CAST($2 AS taler_amount[]))" + " AS t(key,val,frac)" + " ) AS data" + " WHERE auditor_balances.balance_key=data.key;"); + qs = GNUNET_PQ_eval_prepared_non_select (pg->conn, + "auditor_balance_update", + params); + GNUNET_PQ_cleanup_query_params_closures (params); + return qs; + } +} |