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/*
This file is part of TALER
Copyright (C) 2022 Taler Systems SA
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file backenddb/pg_select_exchange_keys.c
* @brief Implementation of the select_exchange_keys function for Postgres
* @author Christian Grothoff
*/
#include "platform.h"
#include <taler/taler_error_codes.h>
#include <taler/taler_dbevents.h>
#include <taler/taler_pq_lib.h>
#include "pg_select_exchange_keys.h"
#include "pg_helper.h"
enum GNUNET_DB_QueryStatus
TMH_PG_select_exchange_keys (void *cls,
const char *exchange_url,
struct TALER_EXCHANGE_Keys **keys)
{
struct PostgresClosure *pg = cls;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_string (exchange_url),
GNUNET_PQ_query_param_end
};
json_t *jkeys;
struct GNUNET_PQ_ResultSpec rs[] = {
TALER_PQ_result_spec_json ("keys_json",
&jkeys),
GNUNET_PQ_result_spec_end
};
enum GNUNET_DB_QueryStatus qs;
check_connection (pg);
PREPARE (pg,
"select_exchange_keys",
"SELECT"
" keys_json"
" FROM merchant_exchange_keys"
" WHERE exchange_url=$1;");
qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
"select_exchange_keys",
params,
rs);
if (qs <= 0)
return qs;
*keys = TALER_EXCHANGE_keys_from_json (jkeys);
json_decref (jkeys);
if (NULL == *keys)
{
GNUNET_break (0);
return GNUNET_DB_STATUS_HARD_ERROR;
}
return qs;
}
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