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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2015, Digium, Inc.
*
* Matthew Jordan <mjordan@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.
*/
/*!
* \brief Statsd Endpoint stats.
*
* This module subscribes to Stasis endpoints and send statistics
* based on their state.
*
* \author Matthew Jordan <mjordan@digium.com>
* \since 13.7.0
*/
/*** MODULEINFO
<depend>res_statsd</depend>
<defaultenabled>no</defaultenabled>
<support_level>extended</support_level>
***/
#include "asterisk.h"
#include "asterisk/module.h"
#include "asterisk/stasis_endpoints.h"
#include "asterisk/stasis_message_router.h"
#include "asterisk/statsd.h"
/*! Stasis message router */
static struct stasis_message_router *router;
static void update_endpoint_state(struct ast_endpoint_snapshot *snapshot, const char *delta)
{
switch (snapshot->state) {
case AST_ENDPOINT_UNKNOWN:
ast_statsd_log_string("endpoints.state.unknown", AST_STATSD_GAUGE, delta, 1.0);
break;
case AST_ENDPOINT_OFFLINE:
ast_statsd_log_string("endpoints.state.offline", AST_STATSD_GAUGE, delta, 1.0);
break;
case AST_ENDPOINT_ONLINE:
ast_statsd_log_string("endpoints.state.online", AST_STATSD_GAUGE, delta, 1.0);
break;
}
}
static void handle_endpoint_update(struct ast_endpoint_snapshot *old_snapshot, struct ast_endpoint_snapshot *new_snapshot)
{
if (!old_snapshot && new_snapshot) {
ast_statsd_log_string("endpoints.count", AST_STATSD_GAUGE, "+1", 1.0);
update_endpoint_state(new_snapshot, "+1");
} else if (old_snapshot && !new_snapshot) {
ast_statsd_log_string("endpoints.count", AST_STATSD_GAUGE, "-1", 1.0);
update_endpoint_state(old_snapshot, "-1");
} else {
if (old_snapshot->state != new_snapshot->state) {
update_endpoint_state(old_snapshot, "-1");
update_endpoint_state(new_snapshot, "+1");
}
ast_statsd_log_full_va("endpoints.%s.%s.channels", AST_STATSD_GAUGE, new_snapshot->num_channels, 1.0,
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new_snapshot->tech, new_snapshot->resource);
}
}
static void cache_update_cb(void *data, struct stasis_subscription *sub,
struct stasis_message *message)
{
struct stasis_cache_update *update = stasis_message_data(message);
struct ast_endpoint_snapshot *old_snapshot;
struct ast_endpoint_snapshot *new_snapshot;
if (ast_endpoint_snapshot_type() != update->type) {
return;
}
old_snapshot = stasis_message_data(update->old_snapshot);
new_snapshot = stasis_message_data(update->new_snapshot);
handle_endpoint_update(old_snapshot, new_snapshot);
}
static int dump_cache_load(void *obj, void *arg, int flags)
{
struct stasis_message *msg = obj;
struct ast_endpoint_snapshot *snapshot = stasis_message_data(msg);
handle_endpoint_update(NULL, snapshot);
return 0;
}
static int dump_cache_unload(void *obj, void *arg, int flags)
{
struct stasis_message *msg = obj;
struct ast_endpoint_snapshot *snapshot = stasis_message_data(msg);
handle_endpoint_update(snapshot, NULL);
return 0;
}
static int load_module(void)
{
struct ao2_container *endpoints;
router = stasis_message_router_create(ast_endpoint_topic_all_cached());
if (!router) {
return AST_MODULE_LOAD_DECLINE;
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}
stasis_message_router_add(router, stasis_cache_update_type(), cache_update_cb, NULL);
endpoints = stasis_cache_dump(ast_endpoint_cache(), ast_endpoint_snapshot_type());
if (endpoints) {
ao2_callback(endpoints, OBJ_MULTIPLE | OBJ_NODATA | OBJ_NOLOCK, dump_cache_load, NULL);
ao2_ref(endpoints, -1);
}
return AST_MODULE_LOAD_SUCCESS;
}
static int unload_module(void)
{
struct ao2_container *endpoints;
endpoints = stasis_cache_dump(ast_endpoint_cache(), ast_endpoint_snapshot_type());
if (endpoints) {
ao2_callback(endpoints, OBJ_MULTIPLE | OBJ_NODATA | OBJ_NOLOCK, dump_cache_unload, NULL);
ao2_ref(endpoints, -1);
}
stasis_message_router_unsubscribe_and_join(router);
router = NULL;
return 0;
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Endpoint statistics",
.support_level = AST_MODULE_SUPPORT_EXTENDED,
.load = load_module,
.unload = unload_module,
.requires = "res_statsd"