expire_locks.c (2092B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022 Taler Systems SA 4 5 TALER is free software; you can redistribute it and/or modify it under the 6 terms of the GNU General Public License as published by the Free Software 7 Foundation; either version 3, or (at your option) any later version. 8 9 TALER is distributed in the hope that it will be useful, but WITHOUT ANY 10 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR 11 A PARTICULAR PURPOSE. See the GNU General Public License for more details. 12 13 You should have received a copy of the GNU General Public License along with 14 TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> 15 */ 16 /** 17 * @file src/backenddb/expire_locks.c 18 * @brief Implementation of the expire_locks function for Postgres 19 * @author Iván Ávalos 20 */ 21 #include "platform.h" 22 #include <taler/taler_pq_lib.h> 23 #include "merchant-database/expire_locks.h" 24 #include "helper.h" 25 26 27 enum GNUNET_DB_QueryStatus 28 TALER_MERCHANTDB_expire_locks (struct TALER_MERCHANTDB_PostgresContext *pg) 29 { 30 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get (); 31 struct GNUNET_PQ_QueryParam params[] = { 32 GNUNET_PQ_query_param_absolute_time (&now), 33 GNUNET_PQ_query_param_end 34 }; 35 uint64_t total; 36 struct GNUNET_PQ_ResultSpec rs[] = { 37 GNUNET_PQ_result_spec_uint64 ("expire_locks", 38 &total), 39 GNUNET_PQ_result_spec_end 40 }; 41 enum GNUNET_DB_QueryStatus qs; 42 43 check_connection (pg); 44 PREPARE (pg, 45 "expire_locks", 46 "SELECT expire_locks($1) " 47 " AS expire_locks"); 48 qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 49 "expire_locks", 50 params, 51 rs); 52 if (qs < 0) 53 { 54 GNUNET_break (0); 55 return qs; 56 } 57 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, 58 "Released %llu locks across all instances\n", 59 (unsigned long long) total); 60 return (enum GNUNET_DB_QueryStatus) total; 61 }