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/*
This file is part of TALER
Copyright (C) 2024 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/>
*/
#include "platform.h"
#include "taler_error_codes.h"
#include "taler_dbevents.h"
#include "taler_pq_lib.h"
#include "pg_helper.h"
#include "pg_get_balances.h"
struct BalancesContext
{
/**
* Function to call for each bad sig loss.
*/
TALER_AUDITORDB_BalancesCallback cb;
/**
* Closure for @e cb
*/
void *cb_cls;
/**
* Plugin context.
*/
struct PostgresClosure *pg;
/**
* Query status to return.
*/
enum GNUNET_DB_QueryStatus qs;
};
/**
* Helper function for #TAH_PG_get_balances().
* To be called with the results of a SELECT statement
* that has returned @a num_results results.
*
* @param cls closure of type `struct BalancesContext *`
* @param result the postgres result
* @param num_results the number of results in @a result
*/
static void
balances_cb (void *cls,
PGresult *result,
unsigned int num_results)
{
struct BalancesContext *dcc = cls;
struct PostgresClosure *pg = dcc->pg;
for (unsigned int i = 0; i < num_results; i++)
{
struct TALER_AUDITORDB_Balances dc;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_string ("balance_key",
&dc.balance_key),
TALER_PQ_RESULT_SPEC_AMOUNT ("balance_value",
&dc.balance_value),
GNUNET_PQ_result_spec_end
};
enum GNUNET_GenericReturnValue rval;
if (GNUNET_OK !=
GNUNET_PQ_extract_result (result,
rs,
i))
{
GNUNET_break (0);
dcc->qs = GNUNET_DB_STATUS_HARD_ERROR;
return;
}
dcc->qs = i + 1;
rval = dcc->cb (dcc->cb_cls,
&dc);
GNUNET_PQ_cleanup_result (rs);
if (GNUNET_OK != rval)
break;
}
}
enum GNUNET_DB_QueryStatus
TAH_PG_get_balances (
void *cls,
const char *balance_key,
TALER_AUDITORDB_BalancesCallback cb,
void *cb_cls)
{
struct PostgresClosure *pg = cls;
struct GNUNET_PQ_QueryParam params[] = {
NULL == balance_key
? GNUNET_PQ_query_param_null ()
: GNUNET_PQ_query_param_string (balance_key),
GNUNET_PQ_query_param_end
};
struct BalancesContext dcc = {
.cb = cb,
.cb_cls = cb_cls,
.pg = pg
};
enum GNUNET_DB_QueryStatus qs;
PREPARE (pg,
"auditor_balances_get",
"SELECT"
" balance_key"
",balance_value"
" FROM auditor_balances"
" WHERE ($1::TEXT IS NULL OR balance_key = $1)"
);
qs = GNUNET_PQ_eval_prepared_multi_select (
pg->conn,
"auditor_balances_get",
params,
&balances_cb,
&dcc);
if (qs > 0)
return dcc.qs;
GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs);
return qs;
}
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