Line data    Source code

       1             : /*
       2             :    This file is part of TALER
       3             :    Copyright (C) 2022-2023 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_batch_deposits_missing_wire.c
      18             :  * @brief Implementation of the select_batch_deposits_missing_wire function for Postgres
      19             :  * @author Christian Grothoff
      20             :  */
      21             : #include "platform.h"
      22             : #include "taler_error_codes.h"
      23             : #include "taler_dbevents.h"
      24             : #include "taler_pq_lib.h"
      25             : #include "pg_select_batch_deposits_missing_wire.h"
      26             : #include "pg_helper.h"
      27             : 
      28             : /**
      29             :  * Closure for #missing_wire_cb().
      30             :  */
      31             : struct MissingWireContext
      32             : {
      33             :   /**
      34             :    * Function to call per result.
      35             :    */
      36             :   TALER_EXCHANGEDB_WireMissingCallback cb;
      37             : 
      38             :   /**
      39             :    * Closure for @e cb.
      40             :    */
      41             :   void *cb_cls;
      42             : 
      43             :   /**
      44             :    * Plugin context.
      45             :    */
      46             :   struct PostgresClosure *pg;
      47             : 
      48             :   /**
      49             :    * Set to #GNUNET_SYSERR on error.
      50             :    */
      51             :   enum GNUNET_GenericReturnValue status;
      52             : };
      53             : 
      54             : 
      55             : /**
      56             :  * Invoke the callback for each result.
      57             :  *
      58             :  * @param cls a `struct MissingWireContext *`
      59             :  * @param result SQL result
      60             :  * @param num_results number of rows in @a result
      61             :  */
      62             : static void
      63          68 : missing_wire_cb (void *cls,
      64             :                  PGresult *result,
      65             :                  unsigned int num_results)
      66             : {
      67          68 :   struct MissingWireContext *mwc = cls;
      68          68 :   struct PostgresClosure *pg = mwc->pg;
      69             : 
      70         167 :   for (unsigned int i = 0; i<num_results; i++)
      71             :   {
      72             :     uint64_t batch_deposit_serial_id;
      73             :     struct GNUNET_TIME_Timestamp deadline;
      74             :     struct TALER_FullPaytoHashP wire_target_h_payto;
      75             :     struct TALER_Amount total_amount;
      76          99 :     struct GNUNET_PQ_ResultSpec rs[] = {
      77          99 :       GNUNET_PQ_result_spec_uint64 ("batch_deposit_serial_id",
      78             :                                     &batch_deposit_serial_id),
      79          99 :       GNUNET_PQ_result_spec_auto_from_type ("wire_target_h_payto",
      80             :                                             &wire_target_h_payto),
      81          99 :       GNUNET_PQ_result_spec_timestamp ("deadline",
      82             :                                        &deadline),
      83          99 :       TALER_PQ_RESULT_SPEC_AMOUNT ("total_amount",
      84             :                                    &total_amount),
      85             :       GNUNET_PQ_result_spec_end
      86             :     };
      87             : 
      88          99 :     if (GNUNET_OK !=
      89          99 :         GNUNET_PQ_extract_result (result,
      90             :                                   rs,
      91             :                                   i))
      92             :     {
      93           0 :       GNUNET_break (0);
      94           0 :       mwc->status = GNUNET_SYSERR;
      95           0 :       return;
      96             :     }
      97          99 :     mwc->cb (mwc->cb_cls,
      98             :              batch_deposit_serial_id,
      99             :              &total_amount,
     100             :              &wire_target_h_payto,
     101             :              deadline);
     102          99 :     GNUNET_PQ_cleanup_result (rs);
     103             :   }
     104             : }
     105             : 
     106             : 
     107             : enum GNUNET_DB_QueryStatus
     108          68 : TEH_PG_select_batch_deposits_missing_wire (
     109             :   void *cls,
     110             :   uint64_t min_batch_deposit_serial_id,
     111             :   TALER_EXCHANGEDB_WireMissingCallback cb,
     112             :   void *cb_cls)
     113             : {
     114          68 :   struct PostgresClosure *pg = cls;
     115          68 :   struct GNUNET_PQ_QueryParam params[] = {
     116          68 :     GNUNET_PQ_query_param_uint64 (&min_batch_deposit_serial_id),
     117             :     GNUNET_PQ_query_param_end
     118             :   };
     119          68 :   struct MissingWireContext mwc = {
     120             :     .cb = cb,
     121             :     .cb_cls = cb_cls,
     122             :     .pg = pg,
     123             :     .status = GNUNET_OK
     124             :   };
     125             :   enum GNUNET_DB_QueryStatus qs;
     126             : 
     127          68 :   PREPARE (pg,
     128             :            "deposits_get_deposits_missing_wire",
     129             :            "SELECT"
     130             :            " batch_deposit_serial_id"
     131             :            ",wire_target_h_payto"
     132             :            ",deadline"
     133             :            ",total_amount"
     134             :            " FROM exchange_do_select_deposits_missing_wire"
     135             :            " ($1);");
     136          68 :   qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
     137             :                                              "deposits_get_deposits_missing_wire",
     138             :                                              params,
     139             :                                              &missing_wire_cb,
     140             :                                              &mwc);
     141          68 :   if (GNUNET_OK != mwc.status)
     142           0 :     return GNUNET_DB_STATUS_HARD_ERROR;
     143          68 :   return qs;
     144             : }