diff options
Diffstat (limited to 'src/exchangedb/pg_preflight.c')
-rw-r--r-- | src/exchangedb/pg_preflight.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/exchangedb/pg_preflight.c b/src/exchangedb/pg_preflight.c new file mode 100644 index 000000000..4533c9a97 --- /dev/null +++ b/src/exchangedb/pg_preflight.c @@ -0,0 +1,69 @@ +/* + 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_preflight.c + * @brief Implementation of the preflight 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_preflight.h" +#include "pg_helper.h" + + +/** + * Connect to the database if the connection does not exist yet. + * + * @param pg the plugin-specific state + * @return #GNUNET_OK on success + */ +enum GNUNET_GenericReturnValue +TEH_PG_internal_setup (struct PostgresClosure *pg); + + +enum GNUNET_GenericReturnValue +TEH_PG_preflight (void *cls) +{ + struct PostgresClosure *pg = cls; + struct GNUNET_PQ_ExecuteStatement es[] = { + GNUNET_PQ_make_execute ("ROLLBACK"), + GNUNET_PQ_EXECUTE_STATEMENT_END + }; + + if (GNUNET_OK != + TEH_PG_internal_setup (pg)) + return GNUNET_SYSERR; + if (NULL == pg->transaction_name) + return GNUNET_OK; /* all good */ + if (GNUNET_OK == + GNUNET_PQ_exec_statements (pg->conn, + es)) + { + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "BUG: Preflight check rolled back transaction `%s'!\n", + pg->transaction_name); + } + else + { + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "BUG: Preflight check failed to rollback transaction `%s'!\n", + pg->transaction_name); + } + pg->transaction_name = NULL; + return GNUNET_NO; +} |