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local stats = require "util.statistics".new();
local config = require "core.configmanager";
local log = require "util.logger".init("stats");
local timer = require "util.timer";
local fire_event = prosody.events.fire_event;
local stats_config = config.get("*", "statistics_interval");
local stats_interval = tonumber(stats_config);
if stats_config and not stats_interval then
log("error", "Invalid 'statistics_interval' setting, statistics will be disabled");
end
local measure, collect;
local latest_stats = {};
local changed_stats = {};
local stats_extra = {};
if stats_interval then
log("debug", "Statistics collection is enabled every %d seconds", stats_interval);
function measure(type, name)
local f = assert(stats[type], "unknown stat type: "..type);
return f(name);
end
local mark_collection_start = measure("times", "stats.collection");
local mark_processing_start = measure("times", "stats.processing");
function collect()
local mark_collection_done = mark_collection_start();
fire_event("stats-update");
changed_stats, stats_extra = {}, {};
for stat_name, getter in pairs(stats.get_stats()) do
local type, value, extra = getter();
local old_value = latest_stats[stat_name];
latest_stats[stat_name] = value;
if value ~= old_value then
changed_stats[stat_name] = value;
end
if extra then
stats_extra[stat_name] = extra;
end
end
mark_collection_done();
local mark_processing_done = mark_processing_start();
fire_event("stats-updated", { stats = latest_stats, changed_stats = changed_stats, stats_extra = stats_extra });
mark_processing_done();
return stats_interval;
end
timer.add_task(stats_interval, collect);
prosody.events.add_handler("server-started", function () collect() end, -1);
else
log("debug", "Statistics collection is disabled");
-- nop
function measure()
return measure;
end
function collect()
end
end
return {
measure = measure;
collect = collect;
get_stats = function ()
return latest_stats, changed_stats, stats_extra;
end;
get = function (name)
return latest_stats[name], stats_extra[name];
end;
};
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