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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 backenddb/pg_select_wirewatch_accounts.c
* @brief Implementation of the select_wirewatch_accounts function for Postgres
* @author Christian Grothoff
*/
#include "platform.h"
#include <taler/taler_error_codes.h>
#include <taler/taler_dbevents.h>
#include <taler/taler_pq_lib.h>
#include "pg_select_wirewatch_accounts.h"
#include "pg_helper.h"
/**
* Closure for #handle_results().
*/
struct Context
{
/**
* Function to call with results.
*/
TALER_MERCHANTDB_WirewatchWorkCallback cb;
/**
* Closure for @e cb.
*/
void *cb_cls;
/**
* Set to true if the parsing failed.
*/
bool failure;
};
/**
* Function to be called with the results of a SELECT statement
* that has returned @a num_results results about accounts.
*
* @param cls of type `struct Context *`
* @param result the postgres result
* @param num_results the number of results in @a result
*/
static void
handle_results (void *cls,
PGresult *result,
unsigned int num_results)
{
struct Context *ctx = cls;
for (unsigned int i = 0; i < num_results; i++)
{
char *instance;
char *payto_uri;
char *facade_url;
json_t *credential;
uint64_t last_serial;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_string ("merchant_id",
&instance),
GNUNET_PQ_result_spec_string ("payto_uri",
&payto_uri),
GNUNET_PQ_result_spec_string ("credit_facade_url",
&facade_url),
GNUNET_PQ_result_spec_allow_null (
TALER_PQ_result_spec_json ("credit_facade_credentials",
&credential),
NULL),
GNUNET_PQ_result_spec_uint64 ("last_bank_serial",
&last_serial),
GNUNET_PQ_result_spec_end
};
if (GNUNET_OK !=
GNUNET_PQ_extract_result (result,
rs,
i))
{
GNUNET_break (0);
ctx->failure = true;
return;
}
ctx->cb (ctx->cb_cls,
instance,
payto_uri,
facade_url,
credential,
last_serial);
GNUNET_PQ_cleanup_result (rs);
}
}
enum GNUNET_DB_QueryStatus
TMH_PG_select_wirewatch_accounts (
void *cls,
TALER_MERCHANTDB_WirewatchWorkCallback cb,
void *cb_cls)
{
struct PostgresClosure *pg = cls;
struct Context ctx = {
.cb = cb,
.cb_cls = cb_cls
};
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_end
};
enum GNUNET_DB_QueryStatus qs;
PREPARE (pg,
"select_wirewatch_progress",
"SELECT"
" last_bank_serial"
",merchant_id"
",payto_uri"
",credit_facade_url"
",credit_facade_credentials"
" FROM merchant_accounts"
" JOIN merchant_instances"
" USING (merchant_serial)"
" WHERE active"
" AND credit_facade_url IS NOT NULL");
check_connection (pg);
qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
"select_wirewatch_progress",
params,
&handle_results,
&ctx);
if (ctx.failure)
return GNUNET_DB_STATUS_HARD_ERROR;
return qs;
}
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