Line data    Source code

       1             : /*
       2             :    This file is part of TALER
       3             :    Copyright (C) 2022 Taler Systems SA
       4             : 
       5             :    TALER is free software; you can redistribute it and/or modify it under the
       6             :    terms of the GNU General Public License as published by the Free Software
       7             :    Foundation; either version 3, or (at your option) any later version.
       8             : 
       9             :    TALER is distributed in the hope that it will be useful, but WITHOUT ANY
      10             :    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
      11             :    A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
      12             : 
      13             :    You should have received a copy of the GNU General Public License along with
      14             :    TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
      15             :  */
      16             : /**
      17             :  * @file exchangedb/pg_event_listen.c
      18             :  * @brief Implementation of the event_listen function for Postgres
      19             :  * @author Christian Grothoff
      20             :  */
      21             : #include "taler/platform.h"
      22             : #include "taler/taler_error_codes.h"
      23             : #include "taler/taler_dbevents.h"
      24             : #include "taler/taler_pq_lib.h"
      25             : #include "pg_event_listen.h"
      26             : #include "pg_helper.h"
      27             : 
      28             : /**
      29             :  * Register callback to be invoked on events of type @a es.
      30             :  *
      31             :  * @param cls database context to use
      32             :  * @param timeout how long until to generate a timeout event
      33             :  * @param es specification of the event to listen for
      34             :  * @param cb function to call when the event happens, possibly
      35             :  *         multiple times (until cancel is invoked)
      36             :  * @param cb_cls closure for @a cb
      37             :  * @return handle useful to cancel the listener
      38             :  */
      39             : struct GNUNET_DB_EventHandler *
      40         108 : TEH_PG_event_listen (void *cls,
      41             :                      struct GNUNET_TIME_Relative timeout,
      42             :                      const struct GNUNET_DB_EventHeaderP *es,
      43             :                      GNUNET_DB_EventCallback cb,
      44             :                      void *cb_cls)
      45             : {
      46         108 :   struct PostgresClosure *pg = cls;
      47             : 
      48         108 :   return GNUNET_PQ_event_listen (pg->conn,
      49             :                                  es,
      50             :                                  timeout,
      51             :                                  cb,
      52             :                                  cb_cls);
      53             : }