exchange

Base system with REST service to issue digital coins, run by the payment service provider
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pg_get_ready_deposit.c (3134B)

      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_get_ready_deposit.c
     18  * @brief Implementation of the get_ready_deposit function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "taler/taler_pq_lib.h"
     22 #include "taler/exchange-database/get_ready_deposit.h"
     23 #include "helper.h"
     24 
     25 
     26 enum GNUNET_DB_QueryStatus
     27 TALER_EXCHANGEDB_get_ready_deposit (struct TALER_EXCHANGEDB_PostgresContext *pg,
     28                                     uint64_t start_shard_row,
     29                                     uint64_t end_shard_row,
     30                                     struct TALER_MerchantPublicKeyP *
     31                                     merchant_pub,
     32                                     struct TALER_FullPayto *payto_uri,
     33                                     char **extra_wire_subject_metadata)
     34 {
     35   struct GNUNET_TIME_Absolute now
     36     = GNUNET_TIME_absolute_get ();
     37   struct GNUNET_PQ_QueryParam params[] = {
     38     GNUNET_PQ_query_param_absolute_time (&now),
     39     GNUNET_PQ_query_param_uint64 (&start_shard_row),
     40     GNUNET_PQ_query_param_uint64 (&end_shard_row),
     41     GNUNET_PQ_query_param_end
     42   };
     43   struct GNUNET_PQ_ResultSpec rs[] = {
     44     GNUNET_PQ_result_spec_auto_from_type ("merchant_pub",
     45                                           merchant_pub),
     46     GNUNET_PQ_result_spec_string ("payto_uri",
     47                                   &payto_uri->full_payto),
     48     GNUNET_PQ_result_spec_allow_null (
     49       GNUNET_PQ_result_spec_string ("extra_wire_subject_metadata",
     50                                     extra_wire_subject_metadata),
     51       NULL),
     52     GNUNET_PQ_result_spec_end
     53   };
     54   const char *query = "deposits_get_ready";
     55 
     56   *extra_wire_subject_metadata = NULL;
     57   PREPARE (pg,
     58            query,
     59            "SELECT"
     60            " wts.payto_uri"
     61            ",bdep.merchant_pub"
     62            ",bdep.extra_wire_subject_metadata"
     63            " FROM batch_deposits bdep"
     64            " JOIN wire_targets wts"
     65            "   USING (wire_target_h_payto)"
     66            " WHERE NOT (bdep.done OR bdep.policy_blocked)"
     67            "   AND bdep.wire_deadline<=$1"
     68            "   AND bdep.shard >= $2"
     69            "   AND bdep.shard <= $3"
     70            " ORDER BY "
     71            "   bdep.wire_deadline ASC"
     72            "  ,bdep.shard ASC"
     73            " LIMIT 1;");
     74   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     75                                                    query,
     76                                                    params,
     77                                                    rs);
     78 }