main/manager_system.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 2013, Digium, Inc.
   5  *
   6  * Jason Parker <jparker@digium.com>
   7  *
   8  * See http://www.asterisk.org for more information about
   9  * the Asterisk project. Please do not directly contact
  10  * any of the maintainers of this project for assistance;
  11  * the project provides a web site, mailing lists and IRC
  12  * channels for your use.
  13  *
  14  * This program is free software, distributed under the terms of
  15  * the GNU General Public License Version 2. See the LICENSE file
  16  * at the top of the source tree.
  17  */
  18
  19 /*! \file
  20  *
  21  * \brief System AMI event handling
  22  *
  23  * \author Jason Parker <jparker@digium.com>
  24  */
  25
  26 #include "asterisk.h"
  27
  28 #include "asterisk/stasis.h"
  29 #include "asterisk/stasis_message_router.h"
  30 #include "asterisk/stasis_system.h"
  31
  32 /*! \brief The \ref stasis subscription returned by the forwarding of the system topic
  33  * to the manager topic
  34  */
  35 static struct stasis_forward *topic_forwarder;
  36
  37 static void manager_system_shutdown(void)
  38 {
  39         stasis_forward_cancel(topic_forwarder);
  40         topic_forwarder = NULL;
  41 }
  42
  43 int manager_system_init(void)
  44 {
  45         int ret = 0;
  46         struct stasis_topic *manager_topic;
  47         struct stasis_topic *system_topic;
  48         struct stasis_message_router *message_router;
  49
  50         manager_topic = ast_manager_get_topic();
  51         if (!manager_topic) {
  52                 return -1;
  53         }
  54         message_router = ast_manager_get_message_router();
  55         if (!message_router) {
  56                 return -1;
  57         }
  58         system_topic = ast_system_topic();
  59         if (!system_topic) {
  60                 return -1;
  61         }
  62
  63         topic_forwarder = stasis_forward_all(system_topic, manager_topic);
  64         if (!topic_forwarder) {
  65                 return -1;
  66         }
  67
  68         ast_register_cleanup(manager_system_shutdown);
  69
  70         /* If somehow we failed to add any routes, just shut down the whole
  71          * thing and fail it.
  72          */
  73         if (ret) {
  74                 manager_system_shutdown();
  75                 return -1;
  76         }
  77
  78         return 0;
  79 }