diff options
Diffstat (limited to 'src/auditordb/pg_select_purse_expired.c')
-rw-r--r-- | src/auditordb/pg_select_purse_expired.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/src/auditordb/pg_select_purse_expired.c b/src/auditordb/pg_select_purse_expired.c new file mode 100644 index 000000000..77c6d3b26 --- /dev/null +++ b/src/auditordb/pg_select_purse_expired.c @@ -0,0 +1,146 @@ +/* + 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 auditordb/pg_select_purse_expired.c + * @brief Implementation of the select_purse_expired 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_select_purse_expired.h" +#include "pg_helper.h" + + +/** + * Closure for #purse_expired_cb(). + */ +struct PurseExpiredContext +{ + + /** + * Function to call for each expired purse. + */ + TALER_AUDITORDB_ExpiredPurseCallback cb; + + /** + * Closure for @e cb + */ + void *cb_cls; + + /** + * Plugin context. + */ + struct PostgresClosure *pg; + + /** + * Query status to return. + */ + enum GNUNET_DB_QueryStatus qs; +}; + + +/** + * Helper function for #TAH_PG_select_purse_expired(). + * To be called with the results of a SELECT statement + * that has returned @a num_results results. + * + * @param cls closure of type `struct PurseExpiredContext *` + * @param result the postgres result + * @param num_results the number of results in @a result + */ +static void +purse_expired_cb (void *cls, + PGresult *result, + unsigned int num_results) +{ + struct PurseExpiredContext *eic = cls; + struct PostgresClosure *pg = eic->pg; + + for (unsigned int i = 0; i < num_results; i++) + { + struct TALER_PurseContractPublicKeyP purse_pub; + struct GNUNET_TIME_Timestamp expiration_date; + struct TALER_Amount balance; + struct GNUNET_PQ_ResultSpec rs[] = { + GNUNET_PQ_result_spec_auto_from_type ("purse_pub", + &purse_pub), + TALER_PQ_RESULT_SPEC_AMOUNT ("balance", + &balance), + GNUNET_PQ_result_spec_timestamp ("expiration_date", + &expiration_date), + GNUNET_PQ_result_spec_end + }; + + if (GNUNET_OK != + GNUNET_PQ_extract_result (result, + rs, + i)) + { + GNUNET_break (0); + eic->qs = GNUNET_DB_STATUS_HARD_ERROR; + return; + } + eic->qs = i + 1; + if (GNUNET_OK != + eic->cb (eic->cb_cls, + &purse_pub, + &balance, + expiration_date)) + break; + } +} + + +enum GNUNET_DB_QueryStatus +TAH_PG_select_purse_expired ( + void *cls, + TALER_AUDITORDB_ExpiredPurseCallback cb, + void *cb_cls) +{ + struct PostgresClosure *pg = cls; + struct GNUNET_TIME_Timestamp now + = GNUNET_TIME_timestamp_get (); + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_timestamp (&now), + GNUNET_PQ_query_param_end + }; + struct PurseExpiredContext eic = { + .cb = cb, + .cb_cls = cb_cls, + .pg = pg + }; + enum GNUNET_DB_QueryStatus qs; + + PREPARE (pg, + "auditor_select_expired_purses", + "SELECT" + " purse_pub" + ",expiration_date" + ",balance" + " FROM auditor_purses" + " AND expiration_date<$1;"); + qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, + "auditor_select_expired_purses", + params, + &purse_expired_cb, + &eic); + if (qs > 0) + return eic.qs; + GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs); + return qs; +} |