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/pg_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/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_select_wire_out_above_serial_id.h"
      26             : #include "pg_helper.h"
      27             : 
      28             : /**
      29             :  * Closure for #wire_out_serial_helper_cb().
      30             :  */
      31             : struct WireOutSerialContext
      32             : {
      33             : 
      34             :   /**
      35             :    * Callback to call.
      36             :    */
      37             :   TALER_EXCHANGEDB_WireTransferOutCallback cb;
      38             : 
      39             :   /**
      40             :    * Closure for @e cb.
      41             :    */
      42             :   void *cb_cls;
      43             : 
      44             :   /**
      45             :    * Plugin context.
      46             :    */
      47             :   struct PostgresClosure *pg;
      48             : 
      49             :   /**
      50             :    * Status code, set to #GNUNET_SYSERR on hard errors.
      51             :    */
      52             :   int status;
      53             : };
      54             : 
      55             : 
      56             : /**
      57             :  * Helper function to be called with the results of a SELECT statement
      58             :  * that has returned @a num_results results.
      59             :  *
      60             :  * @param cls closure of type `struct WireOutSerialContext`
      61             :  * @param result the postgres result
      62             :  * @param num_results the number of results in @a result
      63             :  */
      64             : static void
      65          74 : wire_out_serial_helper_cb (void *cls,
      66             :                            PGresult *result,
      67             :                            unsigned int num_results)
      68             : {
      69          74 :   struct WireOutSerialContext *wosc = cls;
      70          74 :   struct PostgresClosure *pg = wosc->pg;
      71             : 
      72          88 :   for (unsigned int i = 0; i<num_results; i++)
      73             :   {
      74             :     uint64_t rowid;
      75             :     struct GNUNET_TIME_Timestamp date;
      76             :     struct TALER_WireTransferIdentifierRawP wtid;
      77             :     struct TALER_FullPayto payto_uri;
      78             :     struct TALER_Amount amount;
      79          14 :     struct GNUNET_PQ_ResultSpec rs[] = {
      80          14 :       GNUNET_PQ_result_spec_uint64 ("wireout_uuid",
      81             :                                     &rowid),
      82          14 :       GNUNET_PQ_result_spec_timestamp ("execution_date",
      83             :                                        &date),
      84          14 :       GNUNET_PQ_result_spec_auto_from_type ("wtid_raw",
      85             :                                             &wtid),
      86          14 :       GNUNET_PQ_result_spec_string ("payto_uri",
      87             :                                     &payto_uri.full_payto),
      88          14 :       TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
      89             :                                    &amount),
      90             :       GNUNET_PQ_result_spec_end
      91             :     };
      92             :     int ret;
      93             : 
      94          14 :     if (GNUNET_OK !=
      95          14 :         GNUNET_PQ_extract_result (result,
      96             :                                   rs,
      97             :                                   i))
      98             :     {
      99           0 :       GNUNET_break (0);
     100           0 :       wosc->status = GNUNET_SYSERR;
     101           0 :       return;
     102             :     }
     103          14 :     ret = wosc->cb (wosc->cb_cls,
     104             :                     rowid,
     105             :                     date,
     106             :                     &wtid,
     107             :                     payto_uri,
     108             :                     &amount);
     109          14 :     GNUNET_PQ_cleanup_result (rs);
     110          14 :     if (GNUNET_OK != ret)
     111           0 :       break;
     112             :   }
     113             : }
     114             : 
     115             : 
     116             : enum GNUNET_DB_QueryStatus
     117          74 : TEH_PG_select_wire_out_above_serial_id (
     118             :   void *cls,
     119             :   uint64_t serial_id,
     120             :   TALER_EXCHANGEDB_WireTransferOutCallback cb,
     121             :   void *cb_cls)
     122             : {
     123          74 :   struct PostgresClosure *pg = cls;
     124          74 :   struct GNUNET_PQ_QueryParam params[] = {
     125          74 :     GNUNET_PQ_query_param_uint64 (&serial_id),
     126             :     GNUNET_PQ_query_param_end
     127             :   };
     128          74 :   struct WireOutSerialContext wosc = {
     129             :     .cb = cb,
     130             :     .cb_cls = cb_cls,
     131             :     .pg = pg,
     132             :     .status = GNUNET_OK
     133             :   };
     134             :   enum GNUNET_DB_QueryStatus qs;
     135             : 
     136          74 :   PREPARE (pg,
     137             :            "select_wire_out_above_serial_id",
     138             :            "SELECT"
     139             :            " wo.wireout_uuid"
     140             :            ",wo.execution_date"
     141             :            ",wo.wtid_raw"
     142             :            ",wt.payto_uri"
     143             :            ",wo.amount"
     144             :            " FROM wire_out wo"
     145             :            " JOIN wire_targets wt"
     146             :            "   USING (wire_target_h_payto)"
     147             :            " WHERE wireout_uuid>=$1"
     148             :            " ORDER BY wireout_uuid ASC;");
     149          74 :   qs = GNUNET_PQ_eval_prepared_multi_select (
     150             :     pg->conn,
     151             :     "select_wire_out_above_serial_id",
     152             :     params,
     153             :     &wire_out_serial_helper_cb,
     154             :     &wosc);
     155          74 :   if (GNUNET_OK != wosc.status)
     156           0 :     return GNUNET_DB_STATUS_HARD_ERROR;
     157          74 :   return qs;
     158             : }