diff options
Diffstat (limited to 'src/exchangedb/pg_iterate_active_auditors.c')
-rw-r--r-- | src/exchangedb/pg_iterate_active_auditors.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/exchangedb/pg_iterate_active_auditors.c b/src/exchangedb/pg_iterate_active_auditors.c new file mode 100644 index 000000000..11b10cb48 --- /dev/null +++ b/src/exchangedb/pg_iterate_active_auditors.c @@ -0,0 +1,124 @@ +/* + 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_iterate_active_auditors.c + * @brief Implementation of the iterate_active_auditors 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_iterate_active_auditors.h" +#include "pg_helper.h" + + +/** + * Closure for #auditors_cb_helper() + */ +struct AuditorsIteratorContext +{ + /** + * Function to call with the results. + */ + TALER_EXCHANGEDB_AuditorsCallback cb; + + /** + * Closure to pass to @e cb + */ + void *cb_cls; + +}; + + +/** + * Helper function for #postgres_iterate_active_auditors(). + * Calls the callback with each auditor. + * + * @param cls a `struct SignkeysIteratorContext` + * @param result db results + * @param num_results number of results in @a result + */ +static void +auditors_cb_helper (void *cls, + PGresult *result, + unsigned int num_results) +{ + struct AuditorsIteratorContext *dic = cls; + + for (unsigned int i = 0; i<num_results; i++) + { + struct TALER_AuditorPublicKeyP auditor_pub; + char *auditor_url; + char *auditor_name; + struct GNUNET_PQ_ResultSpec rs[] = { + GNUNET_PQ_result_spec_auto_from_type ("auditor_pub", + &auditor_pub), + GNUNET_PQ_result_spec_string ("auditor_url", + &auditor_url), + GNUNET_PQ_result_spec_string ("auditor_name", + &auditor_name), + GNUNET_PQ_result_spec_end + }; + + if (GNUNET_OK != + GNUNET_PQ_extract_result (result, + rs, + i)) + { + GNUNET_break (0); + return; + } + dic->cb (dic->cb_cls, + &auditor_pub, + auditor_url, + auditor_name); + GNUNET_PQ_cleanup_result (rs); + } +} + + + +enum GNUNET_DB_QueryStatus +TEH_PG_iterate_active_auditors (void *cls, + TALER_EXCHANGEDB_AuditorsCallback cb, + void *cb_cls) +{ + struct PostgresClosure *pg = cls; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_end + }; + struct AuditorsIteratorContext dic = { + .cb = cb, + .cb_cls = cb_cls, + }; + /* Used in #postgres_iterate_active_auditors() */ + PREPARE (pg, + "select_auditors", + "SELECT" + " auditor_pub" + ",auditor_url" + ",auditor_name" + " FROM auditors" + " WHERE" + " is_active;"); + + return GNUNET_PQ_eval_prepared_multi_select (pg->conn, + "select_auditors", + params, + &auditors_cb_helper, + &dic); +} |