merchant

Merchant backend to process payments, run by merchants
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pg_insert_transfer.c (3223B)

      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 backenddb/pg_insert_transfer.c
     18  * @brief Implementation of the insert_transfer function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "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_insert_transfer.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TMH_PG_insert_transfer (
     31   void *cls,
     32   const char *instance_id,
     33   const char *exchange_url,
     34   const struct TALER_WireTransferIdentifierRawP *wtid,
     35   const struct TALER_Amount *credit_amount,
     36   struct TALER_FullPayto payto_uri,
     37   uint64_t bank_serial_id)
     38 {
     39   struct PostgresClosure *pg = cls;
     40   struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
     41   struct GNUNET_PQ_QueryParam params[] = {
     42     GNUNET_PQ_query_param_string (exchange_url),
     43     GNUNET_PQ_query_param_auto_from_type (wtid),
     44     TALER_PQ_query_param_amount_with_currency (pg->conn,
     45                                                credit_amount),
     46     GNUNET_PQ_query_param_string (payto_uri.full_payto),
     47     GNUNET_PQ_query_param_string (instance_id),
     48     0 == bank_serial_id
     49     ? GNUNET_PQ_query_param_null ()
     50     : GNUNET_PQ_query_param_uint64 (&bank_serial_id),
     51     GNUNET_PQ_query_param_absolute_time (&now),
     52     GNUNET_PQ_query_param_end
     53   };
     54 
     55   check_connection (pg);
     56   // FIXME-#10176: if transfer with matching exchange_url, wtid and credit_amount
     57   // and account_serial exists already AND where bank_serial_id is NULL
     58   // and if our bank_serial_id is NOT NULL, then maybe UPDATE instead?
     59   // (user may have switched from manual import to automatic import,
     60   // and now we may be duplicating all the records, which would be bad).
     61   PREPARE (pg,
     62            "insert_transfer",
     63            "INSERT INTO merchant_transfers"
     64            "(exchange_url"
     65            ",wtid"
     66            ",credit_amount"
     67            ",account_serial"
     68            ",bank_serial_id"
     69            ",execution_time)"
     70            "SELECT"
     71            " $1, $2, $3, account_serial, $6, $7"
     72            " FROM merchant_accounts"
     73            " WHERE REGEXP_REPLACE(payto_uri,'\\?.*','')"
     74            "      =REGEXP_REPLACE($4,'\\?.*','')"
     75            "   AND merchant_serial="
     76            "        (SELECT merchant_serial"
     77            "           FROM merchant_instances"
     78            "          WHERE merchant_id=$5)"
     79            " ON CONFLICT DO NOTHING;");
     80   return GNUNET_PQ_eval_prepared_non_select (pg->conn,
     81                                              "insert_transfer",
     82                                              params);
     83 }