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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_batch_reserves_in_insert.c
* @brief Implementation of the reserves_in_insert function for Postgres
* @author JOSEPHxu
*/
#include "platform.h"
#include "taler_error_codes.h"
#include "taler_dbevents.h"
#include "taler_pq_lib.h"
#include "pg_batch_reserves_in_insert.h"
#include "pg_helper.h"
#include "pg_start.h"
#include "pg_rollback.h"
#include "pg_start_read_committed.h"
#include "pg_commit.h"
#include "pg_reserves_get.h"
#include "pg_reserves_update.h"
#include "pg_setup_wire_target.h"
#include "pg_event_notify.h"
/**
* Generate event notification for the reserve
* change.
*
* @param pg plugin state
* @param reserve_pub reserve to notfiy on
*/
static void
notify_on_reserve (struct PostgresClosure *pg,
const struct TALER_ReservePublicKeyP *reserve_pub)
{
struct TALER_ReserveEventP rep = {
.header.size = htons (sizeof (rep)),
.header.type = htons (TALER_DBEVENT_EXCHANGE_RESERVE_INCOMING),
.reserve_pub = *reserve_pub
};
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Notifying on reserve!\n");
TEH_PG_event_notify (pg,
&rep.header,
NULL,
0);
}
enum GNUNET_DB_QueryStatus
TEH_PG_batch_reserves_in_insert (void *cls,
const struct TALER_EXCHANGEDB_ReserveInInfo *reserves,
unsigned int reserves_length,
enum GNUNET_DB_QueryStatus *results)
{
struct PostgresClosure *pg = cls;
enum GNUNET_DB_QueryStatus qs1;
struct GNUNET_TIME_Timestamp expiry;
struct GNUNET_TIME_Timestamp gc;
struct TALER_PaytoHashP h_payto;
uint64_t reserve_uuid;
bool conflicted;
bool transaction_duplicate;
struct GNUNET_TIME_Timestamp reserve_expiration
= GNUNET_TIME_relative_to_timestamp (pg->idle_reserve_expiration_time);
PREPARE (pg,
"reserve_create",
"SELECT "
"out_reserve_found AS conflicted"
",transaction_duplicate"
",ruuid AS reserve_uuid"
" FROM batch_reserves_in"
" ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11);");
expiry = GNUNET_TIME_absolute_to_timestamp (
GNUNET_TIME_absolute_add (reserves->execution_time.abs_time,
pg->idle_reserve_expiration_time));
gc = GNUNET_TIME_absolute_to_timestamp (
GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
pg->legal_reserve_expiration_time));
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Creating reserve %s with expiration in %s\n",
TALER_B2S (&(reserves->reserve_pub)),
GNUNET_STRINGS_relative_time_to_string (
pg->idle_reserve_expiration_time,
GNUNET_NO));
/* Optimistically assume this is a new reserve, create balance for the first
time; we do this before adding the actual transaction to "reserves_in",
as for a new reserve it can't be a duplicate 'add' operation, and as
the 'add' operation needs the reserve entry as a foreign key. */
for (unsigned int i=0;i<reserves_length;i++)
{
const struct TALER_EXCHANGEDB_ReserveInInfo *reserve = &reserves[i];
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (&reserve->reserve_pub), /*$1*/
GNUNET_PQ_query_param_timestamp (&expiry), /*$4*/
GNUNET_PQ_query_param_timestamp (&gc), /*$5*/
GNUNET_PQ_query_param_uint64 (&reserve->wire_reference), /*6*/
TALER_PQ_query_param_amount (&reserve->balance), /*7+8*/
GNUNET_PQ_query_param_string (reserve->exchange_account_name), /*9*/
GNUNET_PQ_query_param_timestamp (&reserve->execution_time), /*10*/
GNUNET_PQ_query_param_auto_from_type (&h_payto), /*11*/
GNUNET_PQ_query_param_string (reserve->sender_account_details),/*12*/
GNUNET_PQ_query_param_timestamp (&reserve_expiration),/*13*/
GNUNET_PQ_query_param_end
};
/* We should get all our results into results[]*/
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_uint64 ("reserve_uuid",
&reserve_uuid),
GNUNET_PQ_result_spec_bool ("conflicted",
&conflicted),
GNUNET_PQ_result_spec_bool ("transaction_duplicate",
&transaction_duplicate),
GNUNET_PQ_result_spec_end
};
TALER_payto_hash (reserve->sender_account_details,
&h_payto);
/* Note: query uses 'on conflict do nothing' */
qs1 = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
"reserve_create",
params,
rs);
if (qs1 < 0)
return qs1;
notify_on_reserve (pg,
&reserve->reserve_pub);
GNUNET_assert (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS != qs1);
results[i] = (transaction_duplicate)
? GNUNET_DB_STATUS_SUCCESS_NO_RESULTS
: GNUNET_DB_STATUS_SUCCESS_ONE_RESULT;
if ( (! conflicted) && transaction_duplicate)
TEH_PG_rollback(pg);
}
return reserves_length;
}
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