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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_event_listen.h
* @brief implementation of the event_listen function for Postgres
* @author Christian Grothoff
*/
#ifndef PG_EVENT_LISTEN_H
#define PG_EVENT_LISTEN_H
#include "taler_util.h"
#include "taler_json_lib.h"
#include "taler_exchangedb_plugin.h"
/**
* Register callback to be invoked on events of type @a es.
*
* @param cls database context to use
* @param timeout how long until to generate a timeout event
* @param es specification of the event to listen for
* @param cb function to call when the event happens, possibly
* multiple times (until cancel is invoked)
* @param cb_cls closure for @a cb
* @return handle useful to cancel the listener
*/
struct GNUNET_DB_EventHandler *
TEH_PG_event_listen (void *cls,
struct GNUNET_TIME_Relative timeout,
const struct GNUNET_DB_EventHeaderP *es,
GNUNET_DB_EventCallback cb,
void *cb_cls);
#endif
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