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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_do_reserve_purse.c
* @brief Implementation of the do_reserve_purse 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_do_reserve_purse.h"
#include "pg_helper.h"
/**
* Function called insert request to merge a purse into a reserve by the
* respective purse merge key. The purse must not have been merged into a
* different reserve.
*
* @param cls the @e cls of this struct with the plugin-specific state
* @param purse_pub purse to merge
* @param merge_sig signature affirming the merge
* @param merge_timestamp time of the merge
* @param reserve_sig signature of the reserve affirming the merge
* @param purse_fee amount to charge the reserve for the purse creation, NULL to use the quota
* @param reserve_pub public key of the reserve to credit
* @param[out] in_conflict set to true if @a purse_pub was merged into a different reserve already
* @param[out] no_reserve set to true if @a reserve_pub is not a known reserve
* @param[out] insufficient_funds set to true if @a reserve_pub has insufficient capacity to create another purse
* @return transaction status code
*/
enum GNUNET_DB_QueryStatus
TEH_PG_do_reserve_purse (
void *cls,
const struct TALER_PurseContractPublicKeyP *purse_pub,
const struct TALER_PurseMergeSignatureP *merge_sig,
const struct GNUNET_TIME_Timestamp merge_timestamp,
const struct TALER_ReserveSignatureP *reserve_sig,
const struct TALER_Amount *purse_fee,
const struct TALER_ReservePublicKeyP *reserve_pub,
bool *in_conflict,
bool *no_reserve,
bool *insufficient_funds)
{
struct PostgresClosure *pg = cls;
struct TALER_Amount zero_fee;
struct TALER_PaytoHashP h_payto;
struct GNUNET_TIME_Timestamp reserve_expiration
= GNUNET_TIME_absolute_to_timestamp (
GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
pg->idle_reserve_expiration_time));
struct GNUNET_TIME_Timestamp reserve_gc
= GNUNET_TIME_absolute_to_timestamp (
GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
pg->legal_reserve_expiration_time));
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (purse_pub),
GNUNET_PQ_query_param_auto_from_type (merge_sig),
GNUNET_PQ_query_param_timestamp (&merge_timestamp),
GNUNET_PQ_query_param_timestamp (&reserve_expiration),
GNUNET_PQ_query_param_timestamp (&reserve_gc),
GNUNET_PQ_query_param_auto_from_type (reserve_sig),
GNUNET_PQ_query_param_bool (NULL == purse_fee),
TALER_PQ_query_param_amount (pg->conn,
NULL == purse_fee
? &zero_fee
: purse_fee),
GNUNET_PQ_query_param_auto_from_type (reserve_pub),
GNUNET_PQ_query_param_auto_from_type (&h_payto),
GNUNET_PQ_query_param_end
};
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_bool ("insufficient_funds",
insufficient_funds),
GNUNET_PQ_result_spec_bool ("conflict",
in_conflict),
GNUNET_PQ_result_spec_bool ("no_reserve",
no_reserve),
GNUNET_PQ_result_spec_end
};
{
char *payto_uri;
payto_uri = TALER_reserve_make_payto (pg->exchange_url,
reserve_pub);
TALER_payto_hash (payto_uri,
&h_payto);
GNUNET_free (payto_uri);
}
GNUNET_assert (GNUNET_OK ==
TALER_amount_set_zero (pg->currency,
&zero_fee));
/* Used in #postgres_do_reserve_purse() */
PREPARE (pg,
"call_reserve_purse",
"SELECT"
" out_no_funds AS insufficient_funds"
",out_no_reserve AS no_reserve"
",out_conflict AS conflict"
" FROM exchange_do_reserve_purse"
" ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10);");
return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
"call_reserve_purse",
params,
rs);
}
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