Line data    Source code

       1              : /*
       2              :    This file is part of Challenger
       3              :    Copyright (C) 2023 Taler Systems SA
       4              : 
       5              :    Challenger 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              :    Challenger 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              :    Challenger; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
      15              :  */
      16              : /**
      17              :  * @file src/challengerdb/preflight.c
      18              :  * @brief Implementation of the preflight function for Postgres
      19              :  * @author Christian Grothoff
      20              :  */
      21              : #include "platform.h"
      22              : #include <taler/taler_pq_lib.h>
      23              : #include "challenger-database/preflight.h"
      24              : #include "pg_helper.h"
      25              : 
      26              : 
      27              : enum GNUNET_GenericReturnValue
      28          173 : CHALLENGERDB_preflight (struct CHALLENGERDB_PostgresContext *pg)
      29              : {
      30          173 :   struct GNUNET_PQ_ExecuteStatement es[] = {
      31          173 :     GNUNET_PQ_make_execute ("ROLLBACK"),
      32              :     GNUNET_PQ_EXECUTE_STATEMENT_END
      33              :   };
      34              : 
      35          173 :   if (NULL == pg->transaction_name)
      36              :   {
      37          173 :     GNUNET_PQ_reconnect_if_down (pg->conn);
      38          173 :     return GNUNET_OK; /* all good */
      39              :   }
      40            0 :   if (GNUNET_OK !=
      41            0 :       GNUNET_PQ_exec_statements (pg->conn,
      42              :                                  es))
      43              :   {
      44            0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
      45              :                 "BUG: Preflight check failed to rollback transaction `%s'!\n",
      46              :                 pg->transaction_name);
      47            0 :     return GNUNET_SYSERR;
      48              :   }
      49            0 :   GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
      50              :               "BUG: Preflight check rolled back transaction `%s'!\n",
      51              :               pg->transaction_name);
      52            0 :   pg->transaction_name = NULL;
      53            0 :   return GNUNET_NO;
      54              : }