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 (3120B)

      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/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_get_ready_deposit.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TEH_PG_get_ready_deposit (void *cls,
     31                           uint64_t start_shard_row,
     32                           uint64_t end_shard_row,
     33                           struct TALER_MerchantPublicKeyP *merchant_pub,
     34                           struct TALER_FullPayto *payto_uri,
     35                           char **extra_wire_subject_metadata)
     36 {
     37   struct PostgresClosure *pg = cls;
     38   struct GNUNET_TIME_Absolute now
     39     = GNUNET_TIME_absolute_get ();
     40   struct GNUNET_PQ_QueryParam params[] = {
     41     GNUNET_PQ_query_param_absolute_time (&now),
     42     GNUNET_PQ_query_param_uint64 (&start_shard_row),
     43     GNUNET_PQ_query_param_uint64 (&end_shard_row),
     44     GNUNET_PQ_query_param_end
     45   };
     46   struct GNUNET_PQ_ResultSpec rs[] = {
     47     GNUNET_PQ_result_spec_auto_from_type ("merchant_pub",
     48                                           merchant_pub),
     49     GNUNET_PQ_result_spec_string ("payto_uri",
     50                                   &payto_uri->full_payto),
     51     GNUNET_PQ_result_spec_allow_null (
     52       GNUNET_PQ_result_spec_string ("extra_wire_subject_metadata",
     53                                     extra_wire_subject_metadata),
     54       NULL),
     55     GNUNET_PQ_result_spec_end
     56   };
     57   const char *query = "deposits_get_ready";
     58 
     59   *extra_wire_subject_metadata = NULL;
     60   PREPARE (pg,
     61            query,
     62            "SELECT"
     63            " wts.payto_uri"
     64            ",bdep.merchant_pub"
     65            ",bdep.extra_wire_subject_metadata"
     66            " FROM batch_deposits bdep"
     67            " JOIN wire_targets wts"
     68            "   USING (wire_target_h_payto)"
     69            " WHERE NOT (bdep.done OR bdep.policy_blocked)"
     70            "   AND bdep.wire_deadline<=$1"
     71            "   AND bdep.shard >= $2"
     72            "   AND bdep.shard <= $3"
     73            " ORDER BY "
     74            "   bdep.wire_deadline ASC"
     75            "  ,bdep.shard ASC"
     76            " LIMIT 1;");
     77   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     78                                                    query,
     79                                                    params,
     80                                                    rs);
     81 }