LCOV - code coverage report
Current view: top level - auditordb - pg_select_historic_denom_revenue.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 27 32 84.4 %
Date: 2025-06-05 21:03:14 Functions: 2 2 100.0 %

          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 pg_select_historic_denom_revenue.c
      18             :  * @brief Low-level (statement-level) Postgres database access for the exchange
      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_historic_denom_revenue.h"
      26             : #include "pg_helper.h"
      27             : 
      28             : 
      29             : /**
      30             :  * Closure for #historic_denom_revenue_cb().
      31             :  */
      32             : struct HistoricDenomRevenueContext
      33             : {
      34             :   /**
      35             :    * Function to call for each result.
      36             :    */
      37             :   TALER_AUDITORDB_HistoricDenominationRevenueDataCallback 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             :    * Number of results processed.
      51             :    */
      52             :   enum GNUNET_DB_QueryStatus qs;
      53             : };
      54             : 
      55             : 
      56             : /**
      57             :  * Helper function for #TAH_PG_select_historic_denom_revenue().
      58             :  * To be called with the results of a SELECT statement
      59             :  * that has returned @a num_results results.
      60             :  *
      61             :  * @param cls closure of type `struct HistoricRevenueContext *`
      62             :  * @param result the postgres result
      63             :  * @param num_results the number of results in @a result
      64             :  */
      65             : static void
      66           1 : historic_denom_revenue_cb (void *cls,
      67             :                            PGresult *result,
      68             :                            unsigned int num_results)
      69             : {
      70           1 :   struct HistoricDenomRevenueContext *hrc = cls;
      71           1 :   struct PostgresClosure *pg = hrc->pg;
      72             : 
      73           3 :   for (unsigned int i = 0; i < num_results; i++)
      74             :   {
      75             :     uint64_t rowid;
      76             :     struct TALER_DenominationHashP denom_pub_hash;
      77             :     struct GNUNET_TIME_Timestamp revenue_timestamp;
      78             :     struct TALER_Amount revenue_balance;
      79             :     struct TALER_Amount loss;
      80           2 :     struct GNUNET_PQ_ResultSpec rs[] = {
      81           2 :       GNUNET_PQ_result_spec_uint64 ("row_id",
      82             :                                     &rowid),
      83           2 :       GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash",
      84             :                                             &denom_pub_hash),
      85           2 :       GNUNET_PQ_result_spec_timestamp ("revenue_timestamp",
      86             :                                        &revenue_timestamp),
      87           2 :       TALER_PQ_RESULT_SPEC_AMOUNT ("revenue_balance",
      88             :                                    &revenue_balance),
      89           2 :       TALER_PQ_RESULT_SPEC_AMOUNT ("loss_balance",
      90             :                                    &loss),
      91             :       GNUNET_PQ_result_spec_end
      92             :     };
      93             : 
      94           2 :     if (GNUNET_OK !=
      95           2 :         GNUNET_PQ_extract_result (result,
      96             :                                   rs,
      97             :                                   i))
      98             :     {
      99           0 :       GNUNET_break (0);
     100           0 :       hrc->qs = GNUNET_DB_STATUS_HARD_ERROR;
     101           0 :       return;
     102             :     }
     103             : 
     104           2 :     hrc->qs = i + 1;
     105           2 :     if (GNUNET_OK !=
     106           2 :         hrc->cb (hrc->cb_cls,
     107             :                  rowid,
     108             :                  &denom_pub_hash,
     109             :                  revenue_timestamp,
     110             :                  &revenue_balance,
     111             :                  &loss))
     112           0 :       break;
     113             :   }
     114             : }
     115             : 
     116             : 
     117             : enum GNUNET_DB_QueryStatus
     118           1 : TAH_PG_select_historic_denom_revenue (
     119             :   void *cls,
     120             :   int64_t limit,
     121             :   uint64_t offset,
     122             :   TALER_AUDITORDB_HistoricDenominationRevenueDataCallback cb,
     123             :   void *cb_cls)
     124             : {
     125           1 :   struct PostgresClosure *pg = cls;
     126           1 :   uint64_t ulimit = (limit > 0) ? limit : -limit;
     127           1 :   struct GNUNET_PQ_QueryParam params[] = {
     128           1 :     GNUNET_PQ_query_param_uint64 (&offset),
     129           1 :     GNUNET_PQ_query_param_uint64 (&ulimit),
     130             :     GNUNET_PQ_query_param_end
     131             :   };
     132           1 :   struct HistoricDenomRevenueContext hrc = {
     133             :     .cb = cb,
     134             :     .cb_cls = cb_cls,
     135             :     .pg = pg
     136             :   };
     137             :   enum GNUNET_DB_QueryStatus qs;
     138             : 
     139           1 :   PREPARE (pg,
     140             :            "auditor_historic_denomination_revenue_select_inc",
     141             :            "SELECT"
     142             :            " row_id"
     143             :            ",denom_pub_hash"
     144             :            ",revenue_timestamp"
     145             :            ",revenue_balance"
     146             :            ",loss_balance"
     147             :            " FROM auditor_historic_denomination_revenue"
     148             :            " WHERE row_id > $1"
     149             :            " ORDER BY row_id ASC"
     150             :            " LIMIT $2;");
     151           1 :   PREPARE (pg,
     152             :            "auditor_historic_denomination_revenue_select_dec",
     153             :            "SELECT"
     154             :            " row_id"
     155             :            ",denom_pub_hash"
     156             :            ",revenue_timestamp"
     157             :            ",revenue_balance"
     158             :            ",loss_balance"
     159             :            " FROM auditor_historic_denomination_revenue"
     160             :            " WHERE row_id < $1"
     161             :            " ORDER BY row_id DESC"
     162             :            " LIMIT $2;");
     163           1 :   qs = GNUNET_PQ_eval_prepared_multi_select (
     164             :     pg->conn,
     165             :     limit > 0
     166             :     ? "auditor_historic_denomination_revenue_select_inc"
     167             :     : "auditor_historic_denomination_revenue_select_dec",
     168             :     params,
     169             :     &historic_denom_revenue_cb,
     170             :     &hrc);
     171           1 :   if (qs <= 0)
     172           0 :     return qs;
     173           1 :   return hrc.qs;
     174             : }

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