Line data    Source code

       1              : /*
       2              :    This file is part of TALER
       3              :    Copyright (C) 2022, 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              : /**
      17              :  * @file exchangedb/select_wire_out_above_serial_id.c
      18              :  * @brief Implementation of the select_wire_out_above_serial_id function for Postgres
      19              :  * @author Christian Grothoff
      20              :  */
      21              : #include "taler/taler_pq_lib.h"
      22              : #include "exchange-database/select_wire_out_above_serial_id.h"
      23              : #include "helper.h"
      24              : 
      25              : /**
      26              :  * Closure for #wire_out_serial_helper_cb().
      27              :  */
      28              : struct WireOutSerialContext
      29              : {
      30              : 
      31              :   /**
      32              :    * Callback to call.
      33              :    */
      34              :   TALER_EXCHANGEDB_WireTransferOutCallback cb;
      35              : 
      36              :   /**
      37              :    * Closure for @e cb.
      38              :    */
      39              :   void *cb_cls;
      40              : 
      41              :   /**
      42              :    * Plugin context.
      43              :    */
      44              :   struct TALER_EXCHANGEDB_PostgresContext *pg;
      45              : 
      46              :   /**
      47              :    * Status code, set to #GNUNET_SYSERR on hard errors.
      48              :    */
      49              :   int status;
      50              : };
      51              : 
      52              : 
      53              : /**
      54              :  * Helper function to be called with the results of a SELECT statement
      55              :  * that has returned @a num_results results.
      56              :  *
      57              :  * @param cls closure of type `struct WireOutSerialContext`
      58              :  * @param result the postgres result
      59              :  * @param num_results the number of results in @a result
      60              :  */
      61              : static void
      62            4 : wire_out_serial_helper_cb (void *cls,
      63              :                            PGresult *result,
      64              :                            unsigned int num_results)
      65              : {
      66            4 :   struct WireOutSerialContext *wosc = cls;
      67            4 :   struct TALER_EXCHANGEDB_PostgresContext *pg = wosc->pg;
      68              : 
      69            4 :   for (unsigned int i = 0; i<num_results; i++)
      70              :   {
      71              :     uint64_t rowid;
      72              :     struct GNUNET_TIME_Timestamp date;
      73              :     struct TALER_WireTransferIdentifierRawP wtid;
      74              :     struct TALER_FullPayto payto_uri;
      75              :     struct TALER_Amount amount;
      76            0 :     struct GNUNET_PQ_ResultSpec rs[] = {
      77            0 :       GNUNET_PQ_result_spec_uint64 ("wireout_uuid",
      78              :                                     &rowid),
      79            0 :       GNUNET_PQ_result_spec_timestamp ("execution_date",
      80              :                                        &date),
      81            0 :       GNUNET_PQ_result_spec_auto_from_type ("wtid_raw",
      82              :                                             &wtid),
      83            0 :       GNUNET_PQ_result_spec_string ("payto_uri",
      84              :                                     &payto_uri.full_payto),
      85            0 :       TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
      86              :                                    &amount),
      87              :       GNUNET_PQ_result_spec_end
      88              :     };
      89              :     int ret;
      90              : 
      91            0 :     if (GNUNET_OK !=
      92            0 :         GNUNET_PQ_extract_result (result,
      93              :                                   rs,
      94              :                                   i))
      95              :     {
      96            0 :       GNUNET_break (0);
      97            0 :       wosc->status = GNUNET_SYSERR;
      98            0 :       return;
      99              :     }
     100            0 :     ret = wosc->cb (wosc->cb_cls,
     101              :                     rowid,
     102              :                     date,
     103              :                     &wtid,
     104              :                     payto_uri,
     105              :                     &amount);
     106            0 :     GNUNET_PQ_cleanup_result (rs);
     107            0 :     if (GNUNET_OK != ret)
     108            0 :       break;
     109              :   }
     110              : }
     111              : 
     112              : 
     113              : enum GNUNET_DB_QueryStatus
     114            4 : TALER_EXCHANGEDB_select_wire_out_above_serial_id (
     115              :   struct TALER_EXCHANGEDB_PostgresContext *pg,
     116              :   uint64_t serial_id,
     117              :   TALER_EXCHANGEDB_WireTransferOutCallback cb,
     118              :   void *cb_cls)
     119              : {
     120            4 :   struct GNUNET_PQ_QueryParam params[] = {
     121            4 :     GNUNET_PQ_query_param_uint64 (&serial_id),
     122              :     GNUNET_PQ_query_param_end
     123              :   };
     124            4 :   struct WireOutSerialContext wosc = {
     125              :     .cb = cb,
     126              :     .cb_cls = cb_cls,
     127              :     .pg = pg,
     128              :     .status = GNUNET_OK
     129              :   };
     130              :   enum GNUNET_DB_QueryStatus qs;
     131              : 
     132            4 :   PREPARE (pg,
     133              :            "select_wire_out_above_serial_id",
     134              :            "SELECT"
     135              :            " wo.wireout_uuid"
     136              :            ",wo.execution_date"
     137              :            ",wo.wtid_raw"
     138              :            ",wt.payto_uri"
     139              :            ",wo.amount"
     140              :            " FROM wire_out wo"
     141              :            " JOIN wire_targets wt"
     142              :            "   USING (wire_target_h_payto)"
     143              :            " WHERE wireout_uuid>=$1"
     144              :            " ORDER BY wireout_uuid ASC;");
     145            4 :   qs = GNUNET_PQ_eval_prepared_multi_select (
     146              :     pg->conn,
     147              :     "select_wire_out_above_serial_id",
     148              :     params,
     149              :     &wire_out_serial_helper_cb,
     150              :     &wosc);
     151            4 :   if (GNUNET_OK != wosc.status)
     152            0 :     return GNUNET_DB_STATUS_HARD_ERROR;
     153            4 :   return qs;
     154              : }