diff options
Diffstat (limited to 'src/exchangedb/pg_iterate_reserve_close_info.c')
-rw-r--r-- | src/exchangedb/pg_iterate_reserve_close_info.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/src/exchangedb/pg_iterate_reserve_close_info.c b/src/exchangedb/pg_iterate_reserve_close_info.c new file mode 100644 index 000000000..ff0a813c3 --- /dev/null +++ b/src/exchangedb/pg_iterate_reserve_close_info.c @@ -0,0 +1,128 @@ +/* + 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_iterate_reserve_close_info.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_insert_reserve_open_deposit.h" +#include "pg_helper.h" + +/** + * Closure for #iterate_reserve_close_info_cb() + */ +struct IteratorContext +{ + /** + * Function to call with the results. + */ + TALER_EXCHANGEDB_KycAmountCallback cb; + + /** + * Closure to pass to @e cb + */ + void *cb_cls; + + /** + * Plugin context. + */ + struct PostgresClosure *pg; +}; + + +/** + * Helper function for #TEH_PG_iterate_reserve_close_info(). + * Calls the callback with each denomination key. + * + * @param cls a `struct IteratorContext` + * @param result db results + * @param num_results number of results in @a result + */ +static void +iterate_reserve_close_info_cb (void *cls, + PGresult *result, + unsigned int num_results) +{ + struct IteratorContext *ic = cls; + struct PostgresClosure *pg = ic->pg; + + for (unsigned int i = 0; i<num_results; i++) + { + struct TALER_Amount amount; + struct GNUNET_TIME_Absolute ts; + struct GNUNET_PQ_ResultSpec rs[] = { + GNUNET_PQ_result_spec_absolute_time ("execution_date", + &ts), + TALER_PQ_RESULT_SPEC_AMOUNT ("amount", + &amount), + GNUNET_PQ_result_spec_end + }; + + if (GNUNET_OK != + GNUNET_PQ_extract_result (result, + rs, + i)) + { + GNUNET_break (0); + return; + } + ic->cb (ic->cb_cls, + &amount, + ts); + } +} + + +enum GNUNET_DB_QueryStatus +TEH_PG_iterate_reserve_close_info ( + void *cls, + const struct TALER_PaytoHashP *h_payto, + struct GNUNET_TIME_Absolute time_limit, + TALER_EXCHANGEDB_KycAmountCallback kac, + void *kac_cls) +{ + struct PostgresClosure *pg = cls; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_auto_from_type (h_payto), + GNUNET_PQ_query_param_absolute_time (&time_limit), + GNUNET_PQ_query_param_end + }; + struct IteratorContext ic = { + .cb = kac, + .cb_cls = kac_cls, + .pg = pg + }; + + PREPARE (pg, + "iterate_reserve_close_info", + "SELECT" + " amount" + ",execution_date" + " FROM reserves_close" + " WHERE wire_target_h_payto=$1" + " AND execution_date >= $2" + " ORDER BY execution_date DESC"); + return GNUNET_PQ_eval_prepared_multi_select ( + pg->conn, + "iterate_reserve_close_info", + params, + &iterate_reserve_close_info_cb, + &ic); +} |