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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 exchangedb/pg_select_withdraw_amounts_for_kyc_check.c
* @brief Implementation of the select_withdraw_amounts_for_kyc_check function for Postgres
* @author Christian Grothoff
*/
#include "platform.h"
#include "taler_error_codes.h"
#include "taler_dbevents.h"
#include "taler_pq_lib.h"
#include "pg_select_withdraw_amounts_for_kyc_check.h"
#include "pg_select_aggregation_amounts_for_kyc_check.h"
#include "pg_helper.h"
/**
* Closure for #get_kyc_amounts_cb().
*/
struct KycAmountCheckContext
{
/**
* Function to call per result.
*/
TALER_EXCHANGEDB_KycAmountCallback cb;
/**
* Closure for @e cb.
*/
void *cb_cls;
/**
* Plugin context.
*/
struct PostgresClosure *pg;
/**
* Flag set to #GNUNET_OK as long as everything is fine.
*/
enum GNUNET_GenericReturnValue status;
};
/**
* Invoke the callback for each result.
*
* @param cls a `struct KycAmountCheckContext *`
* @param result SQL result
* @param num_results number of rows in @a result
*/
static void
get_kyc_amounts_cb (void *cls,
PGresult *result,
unsigned int num_results)
{
struct KycAmountCheckContext *ctx = cls;
struct PostgresClosure *pg = ctx->pg;
for (unsigned int i = 0; i < num_results; i++)
{
struct GNUNET_TIME_Absolute date;
struct TALER_Amount amount;
struct GNUNET_PQ_ResultSpec rs[] = {
TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
&amount),
GNUNET_PQ_result_spec_absolute_time ("date",
&date),
GNUNET_PQ_result_spec_end
};
enum GNUNET_GenericReturnValue ret;
if (GNUNET_OK !=
GNUNET_PQ_extract_result (result,
rs,
i))
{
GNUNET_break (0);
ctx->status = GNUNET_SYSERR;
return;
}
ret = ctx->cb (ctx->cb_cls,
&amount,
date);
GNUNET_PQ_cleanup_result (rs);
switch (ret)
{
case GNUNET_OK:
continue;
case GNUNET_NO:
break;
case GNUNET_SYSERR:
ctx->status = GNUNET_SYSERR;
break;
}
break;
}
}
enum GNUNET_DB_QueryStatus
TEH_PG_select_withdraw_amounts_for_kyc_check (
void *cls,
const struct TALER_PaytoHashP *h_payto,
struct GNUNET_TIME_Absolute time_limit,
TALER_EXCHANGEDB_KycAmountCallback kac,
void *kac_cls)
{
struct PostgresClosure *pg = cls;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (h_payto),
GNUNET_PQ_query_param_absolute_time (&time_limit),
GNUNET_PQ_query_param_end
};
struct KycAmountCheckContext ctx = {
.cb = kac,
.cb_cls = kac_cls,
.pg = pg,
.status = GNUNET_OK
};
enum GNUNET_DB_QueryStatus qs;
PREPARE (pg,
"select_kyc_relevant_withdraw_events",
"SELECT"
" ro.amount_with_fee AS amount"
",ro.execution_date AS date"
" FROM reserves_in ri"
" JOIN reserve_history rh"
" ON (rh.reserve_pub = ri.reserve_pub)"
" JOIN reserves_out ro"
" ON (ro.reserve_out_serial_id = rh.serial_id)"
" WHERE ri.wire_source_h_payto=$1"
" AND rh.table_name='reserves_out'"
" AND ro.execution_date >= $2"
" ORDER BY rh.reserve_history_serial_id DESC");
qs = GNUNET_PQ_eval_prepared_multi_select (
pg->conn,
"select_kyc_relevant_withdraw_events",
params,
&get_kyc_amounts_cb,
&ctx);
if (GNUNET_OK != ctx.status)
return GNUNET_DB_STATUS_HARD_ERROR;
return qs;
}
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