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Base system with REST service to issue digital coins, run by the payment service provider
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select_refunds_by_coin.h (3047B)

      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 src/include/exchange-database/select_refunds_by_coin.h
     18  * @brief implementation of the select_refunds_by_coin function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #ifndef EXCHANGE_DATABASE_SELECT_REFUNDS_BY_COIN_H
     22 #define EXCHANGE_DATABASE_SELECT_REFUNDS_BY_COIN_H
     23 
     24 #include "taler/taler_util.h"
     25 #include "taler/taler_json_lib.h"
     26 #include "exchangedb_lib.h"
     27 
     28 
     29 /**
     30  * Callback invoked with information about refunds applicable
     31  * to a particular coin and contract.
     32  *
     33  * @param cls closure
     34  * @param amount_with_fee amount being refunded
     35  * @return #GNUNET_OK to continue to iterate, #GNUNET_SYSERR to stop
     36  */
     37 typedef enum GNUNET_GenericReturnValue
     38 (*TALER_EXCHANGEDB_RefundCoinCallback)(
     39   void *cls,
     40   const struct TALER_Amount *amount_with_fee);
     41 
     42 
     43 /* Callback typedefs */
     44 /**
     45  * Callback invoked with information about refunds applicable
     46  * to a particular coin and contract.
     47  *
     48  * @param cls closure
     49  * @param amount_with_fee amount being refunded
     50  * @return #GNUNET_OK to continue to iterate, #GNUNET_SYSERR to stop
     51  */
     52 typedef enum GNUNET_GenericReturnValue
     53 (*TALER_EXCHANGEDB_RefundCoinCallback)(
     54   void *cls,
     55   const struct TALER_Amount *amount_with_fee);
     56 
     57 /**
     58  * Select refunds by @a coin_pub, @a merchant_pub and @a h_contract.
     59  *
     60  * @param pg the database context
     61  * @param coin_pub coin to get refunds for
     62  * @param merchant_pub merchant to get refunds for
     63  * @param h_contract contract (hash) to get refunds for
     64  * @param cb function to call for each refund found
     65  * @param cb_cls closure for @a cb
     66  * @return query result status
     67  */
     68 enum GNUNET_DB_QueryStatus
     69 TALER_EXCHANGEDB_select_refunds_by_coin (struct
     70                                          TALER_EXCHANGEDB_PostgresContext *pg,
     71                                          const struct
     72                                          TALER_CoinSpendPublicKeyP *
     73                                          coin_pub,
     74                                          const struct TALER_MerchantPublicKeyP *
     75                                          merchant_pub,
     76                                          const struct
     77                                          TALER_PrivateContractHashP *
     78                                          h_contract,
     79                                          TALER_EXCHANGEDB_RefundCoinCallback cb,
     80                                          void *cb_cls);
     81 
     82 #endif