merchant

Merchant backend to process payments, run by merchants
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pg_update_contract_session.c (3145B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2025 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_update_contract_session.c
     18  * @brief Implementation of the update_contract_session 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_update_contract_session.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TMH_PG_update_contract_session (
     31   void *cls,
     32   const char *instance_id,
     33   const struct TALER_PrivateContractHashP *h_contract_terms,
     34   const char *session_id,
     35   char **fulfillment_url,
     36   bool *refunded)
     37 {
     38   struct PostgresClosure *pg = cls;
     39   struct GNUNET_PQ_QueryParam params[] = {
     40     GNUNET_PQ_query_param_string (instance_id),
     41     GNUNET_PQ_query_param_auto_from_type (h_contract_terms),
     42     GNUNET_PQ_query_param_string (session_id),
     43     GNUNET_PQ_query_param_end
     44   };
     45   struct GNUNET_PQ_ResultSpec rs[] = {
     46     GNUNET_PQ_result_spec_allow_null (
     47       GNUNET_PQ_result_spec_string ("fulfillment_url",
     48                                     fulfillment_url),
     49       NULL),
     50     GNUNET_PQ_result_spec_bool ("refunded",
     51                                 refunded),
     52     GNUNET_PQ_result_spec_end
     53   };
     54 
     55   /* Session ID must always be given by the caller. */
     56   GNUNET_assert (NULL != session_id);
     57 
     58   /* no preflight check here, run in transaction by caller! */
     59   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
     60               "Updating session for h_contract_terms '%s' of `%s' to `%s'\n",
     61               GNUNET_h2s (&h_contract_terms->hash),
     62               instance_id,
     63               session_id);
     64   PREPARE (pg,
     65            "update_contract_session",
     66            "UPDATE merchant_contract_terms mct SET"
     67            " session_id=$3"
     68            " WHERE h_contract_terms=$2"
     69            "   AND merchant_serial="
     70            "     (SELECT merchant_serial"
     71            "        FROM merchant_instances"
     72            "       WHERE merchant_id=$1)"
     73            " RETURNING"
     74            "  contract_terms->>'fulfillment_url' AS fulfillment_url"
     75            " ,EXISTS (SELECT 1"
     76            "            FROM merchant_refunds mr"
     77            "           WHERE order_serial=mct.order_serial"
     78            " ) AS refunded");
     79   *fulfillment_url = NULL;
     80   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     81                                                    "update_contract_session",
     82                                                    params,
     83                                                    rs);
     84 }