manager_endpoints.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2013, Digium, Inc.
 *
 * Joshua Colp <jcolp@digium.com>
 * David M. Lee, II <dlee@digium.com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */
 
/*! \file
 *
 * \brief The Asterisk Management Interface - AMI (endpoint handling)
 *
 * \author Joshua Colp <jcolp@digium.com>
 * \author David M. Lee, II <dlee@digium.com>
 *
  */
 
#include "asterisk.h"
 
#include "asterisk/callerid.h"
#include "asterisk/channel.h"
#include "asterisk/manager.h"
#include "asterisk/stasis_message_router.h"
#include "asterisk/pbx.h"
#include "asterisk/stasis_endpoints.h"
 
static struct stasis_message_router *endpoint_router;
 
static void manager_endpoints_shutdown(void)
{
    stasis_message_router_unsubscribe_and_join(endpoint_router);
    endpoint_router = NULL;
}
 
static void endpoint_state_cb(void *data, struct stasis_subscription *sub,
    struct stasis_message *message)
{
    stasis_publish(ast_manager_get_topic(), message);
}
 
int manager_endpoints_init(void)
{
    struct stasis_topic *endpoint_topic;
    int ret = 0;
 
    if (endpoint_router) {
        /* Already initialized */
        return 0;
    }
 
    ast_register_cleanup(manager_endpoints_shutdown);
 
    endpoint_topic = ast_endpoint_topic_all_cached();
    if (!endpoint_topic) {
        return -1;
    }
 
    endpoint_router = stasis_message_router_create(endpoint_topic);
 
    if (!endpoint_router) {
        return -1;
    }
 
    ret |= stasis_message_router_add(endpoint_router, ast_endpoint_state_type(), endpoint_state_cb, NULL);
    ret |= stasis_message_router_add(endpoint_router, ast_endpoint_contact_state_type(), endpoint_state_cb, NULL);
 
    /* If somehow we failed to add any routes, just shut down the whole
     * thing and fail it.
     */
    if (ret) {
        manager_endpoints_shutdown();
        return -1;
    }
 
    return 0;
}