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pg_rollback.c (1615B)

      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 donaudb/pg_rollback.c
     18  * @brief Implementation of the rollback function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include <donau_config.h>
     22 #include <taler/taler_error_codes.h>
     23 #include <taler/taler_dbevents.h>
     24 #include <taler/taler_pq_lib.h>
     25 #include "pg_rollback.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 void
     30 DH_PG_rollback (void *cls)
     31 {
     32   struct PostgresClosure *pg = cls;
     33   struct GNUNET_PQ_ExecuteStatement es[] = {
     34     GNUNET_PQ_make_execute ("ROLLBACK"),
     35     GNUNET_PQ_EXECUTE_STATEMENT_END
     36   };
     37 
     38   if (NULL == pg->transaction_name)
     39   {
     40     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
     41                 "Skipping rollback, no transaction active\n");
     42     return;
     43   }
     44   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
     45               "Rolling back transaction\n");
     46   GNUNET_break (GNUNET_OK ==
     47                 GNUNET_PQ_exec_statements (pg->conn,
     48                                            es));
     49   pg->transaction_name = NULL;
     50 }