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/*
This file is part of TALER
Copyright (C) 2022, 2023 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_get_ready_deposit.c
* @brief Implementation of the get_ready_deposit 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_get_ready_deposit.h"
#include "pg_helper.h"
enum GNUNET_DB_QueryStatus
TEH_PG_get_ready_deposit (void *cls,
uint64_t start_shard_row,
uint64_t end_shard_row,
struct TALER_MerchantPublicKeyP *merchant_pub,
char **payto_uri)
{
static int choose_mode = -2;
struct PostgresClosure *pg = cls;
struct GNUNET_TIME_Absolute now
= GNUNET_TIME_absolute_get ();
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_absolute_time (&now),
GNUNET_PQ_query_param_uint64 (&start_shard_row),
GNUNET_PQ_query_param_uint64 (&end_shard_row),
GNUNET_PQ_query_param_end
};
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_auto_from_type ("merchant_pub",
merchant_pub),
GNUNET_PQ_result_spec_string ("payto_uri",
payto_uri),
GNUNET_PQ_result_spec_end
};
const char *query;
if (-2 == choose_mode)
{
const char *mode = getenv ("TALER_POSTGRES_GET_READY_LOGIC");
char dummy;
if ( (NULL==mode) ||
(1 != sscanf (mode,
"%d%c",
&choose_mode,
&dummy)) )
{
if (NULL != mode)
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Bad mode `%s' specified\n",
mode);
choose_mode = 0;
}
}
switch (choose_mode)
{
case 0:
query = "deposits_get_ready-v5";
PREPARE (pg,
query,
"SELECT"
" payto_uri"
",merchant_pub"
" FROM deposits dep"
" JOIN wire_targets wt"
" USING (wire_target_h_payto)"
" WHERE NOT (done OR policy_blocked)"
" AND dep.wire_deadline<=$1"
" AND dep.shard >= $2"
" AND dep.shard <= $3"
" ORDER BY "
" dep.wire_deadline ASC"
" ,dep.shard ASC"
" LIMIT 1;");
break;
case 1:
query = "deposits_get_ready-v6";
PREPARE (pg,
query,
"WITH rc AS MATERIALIZED ("
" SELECT"
" merchant_pub"
",wire_target_h_payto"
" FROM deposits"
" WHERE NOT (done OR policy_blocked)"
" AND wire_deadline<=$1"
" AND shard >= $2"
" AND shard <= $3"
" ORDER BY wire_deadline ASC"
" ,shard ASC"
" LIMIT 1"
")"
"SELECT"
" wt.payto_uri"
",rc.merchant_pub"
" FROM wire_targets wt"
" JOIN rc"
" USING (wire_target_h_payto);");
break;
default:
GNUNET_break (0);
return GNUNET_DB_STATUS_HARD_ERROR;
}
return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
query,
params,
rs);
}
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