151 lines
4.1 KiB
C
151 lines
4.1 KiB
C
/*
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This file is part of TALER
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Copyright (C) 2022 Taler Systems SA
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TALER is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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*/
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/**
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* @file exchangedb/pg_get_wire_fees.c
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* @brief Implementation of the get_wire_fees function for Postgres
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* @author Christian Grothoff
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*/
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#include "platform.h"
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#include "taler_error_codes.h"
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#include "taler_dbevents.h"
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#include "taler_pq_lib.h"
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#include "pg_get_wire_fees.h"
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#include "pg_helper.h"
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/**
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* Closure for #get_wire_fees_cb().
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*/
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struct GetWireFeesContext
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{
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/**
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* Function to call per result.
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*/
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TALER_EXCHANGEDB_WireFeeCallback cb;
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/**
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* Closure for @e cb.
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*/
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void *cb_cls;
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/**
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* Plugin context.
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*/
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struct PostgresClosure *pg;
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/**
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* Flag set to #GNUNET_OK as long as everything is fine.
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*/
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enum GNUNET_GenericReturnValue status;
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};
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/**
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* Invoke the callback for each result.
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*
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* @param cls a `struct GetWireFeesContext *`
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* @param result SQL result
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* @param num_results number of rows in @a result
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*/
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static void
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get_wire_fees_cb (void *cls,
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PGresult *result,
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unsigned int num_results)
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{
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struct GetWireFeesContext *ctx = cls;
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struct PostgresClosure *pg = ctx->pg;
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for (unsigned int i = 0; i < num_results; i++)
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{
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struct TALER_MasterSignatureP master_sig;
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struct TALER_WireFeeSet fees;
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struct GNUNET_TIME_Timestamp start_date;
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struct GNUNET_TIME_Timestamp end_date;
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struct GNUNET_PQ_ResultSpec rs[] = {
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TALER_PQ_RESULT_SPEC_AMOUNT ("wire_fee",
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&fees.wire),
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TALER_PQ_RESULT_SPEC_AMOUNT ("closing_fee",
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&fees.closing),
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GNUNET_PQ_result_spec_timestamp ("start_date",
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&start_date),
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GNUNET_PQ_result_spec_timestamp ("end_date",
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&end_date),
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GNUNET_PQ_result_spec_auto_from_type ("master_sig",
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&master_sig),
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GNUNET_PQ_result_spec_end
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};
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if (GNUNET_OK !=
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GNUNET_PQ_extract_result (result,
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rs,
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i))
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{
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GNUNET_break (0);
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ctx->status = GNUNET_SYSERR;
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return;
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}
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ctx->cb (ctx->cb_cls,
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&fees,
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start_date,
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end_date,
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&master_sig);
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GNUNET_PQ_cleanup_result (rs);
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}
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}
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enum GNUNET_DB_QueryStatus
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TEH_PG_get_wire_fees (void *cls,
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const char *wire_method,
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TALER_EXCHANGEDB_WireFeeCallback cb,
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void *cb_cls)
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{
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struct PostgresClosure *pg = cls;
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struct GNUNET_PQ_QueryParam params[] = {
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GNUNET_PQ_query_param_string (wire_method),
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GNUNET_PQ_query_param_end
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};
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struct GetWireFeesContext ctx = {
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.cb = cb,
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.cb_cls = cb_cls,
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.pg = pg,
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.status = GNUNET_OK
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};
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enum GNUNET_DB_QueryStatus qs;
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PREPARE (pg,
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"get_wire_fees",
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"SELECT"
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" wire_fee_val"
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",wire_fee_frac"
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",closing_fee_val"
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",closing_fee_frac"
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",start_date"
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",end_date"
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",master_sig"
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" FROM wire_fee"
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" WHERE wire_method=$1");
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qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
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"get_wire_fees",
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params,
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&get_wire_fees_cb,
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&ctx);
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if (GNUNET_OK != ctx.status)
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return GNUNET_DB_STATUS_HARD_ERROR;
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return qs;
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}
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