Line data    Source code

       1              : /*
       2              :    This file is part of TALER
       3              :    Copyright (C) 2024 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              : #include "taler/platform.h"
      17              : #include "taler/taler_pq_lib.h"
      18              : #include "pg_helper.h"
      19              : #include "pg_delete_generic.h"
      20              : 
      21              : struct Preparations
      22              : {
      23              :   /**
      24              :    * Database reconnect counter.
      25              :    */
      26              :   unsigned long long cnt;
      27              : 
      28              :   /**
      29              :    * Which DB did we do prepare for.
      30              :    */
      31              :   struct PostgresClosure *pg;
      32              : 
      33              : };
      34              : 
      35              : enum GNUNET_DB_QueryStatus
      36            0 : TAH_PG_delete_generic (
      37              :   void *cls,
      38              :   enum TALER_AUDITORDB_DeletableSuppressableTables table,
      39              :   uint64_t row_id)
      40              : {
      41            0 :   struct PostgresClosure *pg = cls;
      42            0 :   struct GNUNET_PQ_QueryParam params[] = {
      43            0 :     GNUNET_PQ_query_param_uint64 (&row_id),
      44              :     GNUNET_PQ_query_param_end
      45              :   };
      46              :   static struct Preparations preps[
      47              :     TALER_AUDITORDB_DELETABLESUPPRESSABLE_TABLES_MAX];
      48              : 
      49            0 :   struct Preparations *prep = &preps[table];
      50            0 :   const char *table_name = TAH_PG_get_deletable_suppressable_table_name (table);
      51              :   char statement_name[256];
      52              : 
      53            0 :   GNUNET_snprintf (statement_name,
      54              :                    sizeof (statement_name),
      55              :                    "delete_%s",
      56              :                    table_name);
      57            0 :   if ( (pg != prep->pg) ||
      58            0 :        (prep->cnt < pg->prep_gen) )
      59              :   {
      60              :     char sql[256];
      61            0 :     struct GNUNET_PQ_PreparedStatement ps[] = {
      62            0 :       GNUNET_PQ_make_prepare (statement_name,
      63              :                               sql),
      64              :       GNUNET_PQ_PREPARED_STATEMENT_END
      65              :     };
      66              : 
      67            0 :     GNUNET_snprintf (sql,
      68              :                      sizeof (sql),
      69              :                      "DELETE FROM %s"
      70              :                      " WHERE row_id=$1",
      71              :                      table_name);
      72            0 :     if (GNUNET_OK !=
      73            0 :         GNUNET_PQ_prepare_statements (pg->conn,
      74              :                                       ps))
      75              :     {
      76            0 :       GNUNET_break (0);
      77            0 :       return GNUNET_DB_STATUS_HARD_ERROR;
      78              :     }
      79            0 :     prep->pg = pg;
      80            0 :     prep->cnt = pg->prep_gen;
      81              :   }
      82            0 :   return GNUNET_PQ_eval_prepared_non_select (pg->conn,
      83              :                                              statement_name,
      84              :                                              params);
      85              : }