exchange

Base system with REST service to issue digital coins, run by the payment service provider
Log | Files | Refs | Submodules | README | LICENSE

pg_select_batch_deposits_missing_wire.c (4224B)

      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 "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_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 missing_wire_cb (void *cls,
     64                  PGresult *result,
     65                  unsigned int num_results)
     66 {
     67   struct MissingWireContext *mwc = cls;
     68   struct PostgresClosure *pg = mwc->pg;
     69 
     70   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     struct GNUNET_PQ_ResultSpec rs[] = {
     77       GNUNET_PQ_result_spec_uint64 ("batch_deposit_serial_id",
     78                                     &batch_deposit_serial_id),
     79       GNUNET_PQ_result_spec_auto_from_type ("wire_target_h_payto",
     80                                             &wire_target_h_payto),
     81       GNUNET_PQ_result_spec_timestamp ("deadline",
     82                                        &deadline),
     83       TALER_PQ_RESULT_SPEC_AMOUNT ("total_amount",
     84                                    &total_amount),
     85       GNUNET_PQ_result_spec_end
     86     };
     87 
     88     if (GNUNET_OK !=
     89         GNUNET_PQ_extract_result (result,
     90                                   rs,
     91                                   i))
     92     {
     93       GNUNET_break (0);
     94       mwc->status = GNUNET_SYSERR;
     95       return;
     96     }
     97     mwc->cb (mwc->cb_cls,
     98              batch_deposit_serial_id,
     99              &total_amount,
    100              &wire_target_h_payto,
    101              deadline);
    102     GNUNET_PQ_cleanup_result (rs);
    103   }
    104 }
    105 
    106 
    107 enum GNUNET_DB_QueryStatus
    108 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   struct PostgresClosure *pg = cls;
    115   struct GNUNET_PQ_QueryParam params[] = {
    116     GNUNET_PQ_query_param_uint64 (&min_batch_deposit_serial_id),
    117     GNUNET_PQ_query_param_end
    118   };
    119   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   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   qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
    137                                              "deposits_get_deposits_missing_wire",
    138                                              params,
    139                                              &missing_wire_cb,
    140                                              &mwc);
    141   if (GNUNET_OK != mwc.status)
    142     return GNUNET_DB_STATUS_HARD_ERROR;
    143   return qs;
    144 }