mirror of https://github.com/asterisk/asterisk
changes/99/1699/1
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2015, Digium, Inc.
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*
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* Matthew Jordan <mjordan@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*!
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* \brief Statsd Endpoint stats.
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*
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* This module subscribes to Stasis endpoints and send statistics
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* based on their state.
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*
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* \author Matthew Jordan <mjordan@digium.com>
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* \since 13.7.0
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*/
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/*** MODULEINFO
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<depend>res_statsd</depend>
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<defaultenabled>no</defaultenabled>
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<support_level>extended</support_level>
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***/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/module.h"
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#include "asterisk/stasis_endpoints.h"
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#include "asterisk/stasis_message_router.h"
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#include "asterisk/statsd.h"
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/*! Stasis message router */
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static struct stasis_message_router *router;
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static void update_endpoint_state(struct ast_endpoint_snapshot *snapshot, const char *delta)
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{
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switch (snapshot->state) {
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case AST_ENDPOINT_UNKNOWN:
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ast_statsd_log_string("endpoints.state.unknown", AST_STATSD_GUAGE, delta, 1.0);
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break;
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case AST_ENDPOINT_OFFLINE:
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ast_statsd_log_string("endpoints.state.offline", AST_STATSD_GUAGE, delta, 1.0);
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break;
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case AST_ENDPOINT_ONLINE:
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ast_statsd_log_string("endpoints.state.online", AST_STATSD_GUAGE, delta, 1.0);
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break;
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}
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}
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static void handle_endpoint_update(struct ast_endpoint_snapshot *old_snapshot, struct ast_endpoint_snapshot *new_snapshot)
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{
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if (!old_snapshot && new_snapshot) {
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ast_statsd_log_string("endpoints.count", AST_STATSD_GUAGE, "+1", 1.0);
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update_endpoint_state(new_snapshot, "+1");
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} else if (old_snapshot && !new_snapshot) {
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ast_statsd_log_string("endpoints.count", AST_STATSD_GUAGE, "-1", 1.0);
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update_endpoint_state(old_snapshot, "-1");
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} else {
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if (old_snapshot->state != new_snapshot->state) {
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update_endpoint_state(old_snapshot, "-1");
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update_endpoint_state(new_snapshot, "+1");
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}
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ast_statsd_log_full_va("endpoints.%s.%s.channels", AST_STATSD_GUAGE, new_snapshot->num_channels, 1.0,
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new_snapshot->tech, new_snapshot->resource);
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}
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}
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static void cache_update_cb(void *data, struct stasis_subscription *sub,
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struct stasis_message *message)
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{
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struct stasis_cache_update *update = stasis_message_data(message);
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struct ast_endpoint_snapshot *old_snapshot;
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struct ast_endpoint_snapshot *new_snapshot;
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if (ast_endpoint_snapshot_type() != update->type) {
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return;
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}
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old_snapshot = stasis_message_data(update->old_snapshot);
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new_snapshot = stasis_message_data(update->new_snapshot);
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handle_endpoint_update(old_snapshot, new_snapshot);
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}
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static int dump_cache_load(void *obj, void *arg, int flags)
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{
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struct stasis_message *msg = obj;
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struct ast_endpoint_snapshot *snapshot = stasis_message_data(msg);
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handle_endpoint_update(NULL, snapshot);
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return 0;
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}
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static int dump_cache_unload(void *obj, void *arg, int flags)
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{
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struct stasis_message *msg = obj;
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struct ast_endpoint_snapshot *snapshot = stasis_message_data(msg);
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handle_endpoint_update(snapshot, NULL);
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return 0;
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}
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static int load_module(void)
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{
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struct ao2_container *endpoints;
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router = stasis_message_router_create(ast_endpoint_topic_all_cached());
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if (!router) {
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return AST_MODULE_LOAD_FAILURE;
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}
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stasis_message_router_add(router, stasis_cache_update_type(), cache_update_cb, NULL);
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endpoints = stasis_cache_dump(ast_endpoint_cache(), ast_endpoint_snapshot_type());
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if (endpoints) {
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ao2_callback(endpoints, OBJ_MULTIPLE | OBJ_NODATA | OBJ_NOLOCK, dump_cache_load, NULL);
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ao2_ref(endpoints, -1);
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}
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return AST_MODULE_LOAD_SUCCESS;
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}
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static int unload_module(void)
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{
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struct ao2_container *endpoints;
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endpoints = stasis_cache_dump(ast_endpoint_cache(), ast_endpoint_snapshot_type());
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if (endpoints) {
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ao2_callback(endpoints, OBJ_MULTIPLE | OBJ_NODATA | OBJ_NOLOCK, dump_cache_unload, NULL);
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ao2_ref(endpoints, -1);
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}
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stasis_message_router_unsubscribe_and_join(router);
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router = NULL;
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return 0;
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}
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AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Endpoint statistics",
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.support_level = AST_MODULE_SUPPORT_EXTENDED,
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.load = load_module,
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.unload = unload_module,
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.nonoptreq = "res_statsd"
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);
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