Line data    Source code

       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 backenddb/pg_expire_locks.c
      18              :  * @brief Implementation of the expire_locks function for Postgres
      19              :  * @author Iván Ávalos
      20              :  */
      21              : #include "platform.h"
      22              : #include <taler/taler_error_codes.h>
      23              : #include <taler/taler_dbevents.h>
      24              : #include <taler/taler_pq_lib.h>
      25              : #include "pg_expire_locks.h"
      26              : #include "pg_helper.h"
      27              : 
      28              : 
      29              : enum GNUNET_DB_QueryStatus
      30           83 : TMH_PG_expire_locks (void *cls)
      31              : {
      32           83 :   struct PostgresClosure *pg = cls;
      33           83 :   struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
      34           83 :   struct GNUNET_PQ_QueryParam params[] = {
      35           83 :     GNUNET_PQ_query_param_absolute_time (&now),
      36              :     GNUNET_PQ_query_param_end
      37              :   };
      38              :   enum GNUNET_DB_QueryStatus qs1;
      39              :   enum GNUNET_DB_QueryStatus qs2;
      40              :   enum GNUNET_DB_QueryStatus qs3;
      41              : 
      42           83 :   check_connection (pg);
      43           83 :   PREPARE (pg,
      44              :            "unlock_products",
      45              :            "DELETE FROM merchant_inventory_locks"
      46              :            " WHERE expiration < $1");
      47           83 :   qs1 = GNUNET_PQ_eval_prepared_non_select (pg->conn,
      48              :                                             "unlock_products",
      49              :                                             params);
      50           83 :   if (qs1 < 0)
      51              :   {
      52            0 :     GNUNET_break (0);
      53            0 :     return qs1;
      54              :   }
      55           83 :   PREPARE (pg,
      56              :            "unlock_orders",
      57              :            "DELETE FROM merchant_orders"
      58              :            " WHERE pay_deadline < $1");
      59           83 :   qs2 = GNUNET_PQ_eval_prepared_non_select (pg->conn,
      60              :                                             "unlock_orders",
      61              :                                             params);
      62           83 :   if (qs2 < 0)
      63              :   {
      64            0 :     GNUNET_break (0);
      65            0 :     return qs2;
      66              :   }
      67           83 :   PREPARE (pg,
      68              :            "unlock_contracts",
      69              :            "DELETE FROM merchant_contract_terms"
      70              :            " WHERE NOT paid"
      71              :            "   AND pay_deadline < $1");
      72           83 :   qs3 = GNUNET_PQ_eval_prepared_non_select (pg->conn,
      73              :                                             "unlock_contracts",
      74              :                                             params);
      75           83 :   if (qs3 < 0)
      76              :   {
      77            0 :     GNUNET_break (0);
      78            0 :     return qs3;
      79              :   }
      80           83 :   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
      81              :               "Released %d+%d+%d locks\n",
      82              :               qs1,
      83              :               qs2,
      84              :               qs3);
      85           83 :   return qs1 + qs2 + qs3;
      86              : }