747beb1ed1
In all non-pbx modules, AST_MODULE_LOAD_FAILURE has been changed to AST_MODULE_LOAD_DECLINE. This prevents asterisk from exiting if a module can't be loaded. If the user wishes to retain the FAILURE behavior for a specific module, they can use the "require" or "preload-require" keyword in modules.conf. A new API was added to logger: ast_is_logger_initialized(). This allows asterisk.c/check_init() to print to the error log once the logger subsystem is ready instead of just to stdout. If something does fail before the logger is initialized, we now print to stderr instead of stdout. Change-Id: I5f4b50623d9b5a6cb7c5624a8c5c1274c13b2b25
156 lines
4.4 KiB
C
156 lines
4.4 KiB
C
/*
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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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#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_GAUGE, 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_GAUGE, 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_GAUGE, 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_GAUGE, "+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_GAUGE, "-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_GAUGE, 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_DECLINE;
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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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