start.h (2177B)
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/include/merchant-database/start.h 18 * @brief implementation of the start, rollback and commit functions for Postgres 19 * @author Christian Grothoff 20 */ 21 #ifndef MERCHANT_DATABASE_START_H 22 #define MERCHANT_DATABASE_START_H 23 24 #include <taler/taler_util.h> 25 #include <taler/taler_json_lib.h> 26 #include "merchantdb_lib.h" 27 28 29 /** 30 * Start a transaction. 31 * 32 * @param pg database connection 33 * @param name unique name identifying the transaction (for debugging), 34 * must point to a constant 35 * @return #GNUNET_OK on success 36 */ 37 enum GNUNET_GenericReturnValue 38 TALER_MERCHANTDB_start ( 39 struct TALER_MERCHANTDB_PostgresContext *pg, 40 const char *name); 41 42 43 /** 44 * Start a transaction in 'read committed' mode. 45 * 46 * @param pg database connection 47 * @param name unique name identifying the transaction (for debugging), 48 * must point to a constant 49 * @return #GNUNET_OK on success 50 */ 51 enum GNUNET_GenericReturnValue 52 TALER_MERCHANTDB_start_read_committed ( 53 struct TALER_MERCHANTDB_PostgresContext *pg, 54 const char *name); 55 56 /** 57 * Roll back the current transaction of a database connection. 58 * 59 * @param pg database connection 60 */ 61 void 62 TALER_MERCHANTDB_rollback (struct TALER_MERCHANTDB_PostgresContext *pg); 63 64 65 /** 66 * Commit the current transaction of a database connection. 67 * 68 * @param pg database connection 69 * @return transaction status code 70 */ 71 enum GNUNET_DB_QueryStatus 72 TALER_MERCHANTDB_commit (struct TALER_MERCHANTDB_PostgresContext *pg); 73 74 #endif