prosody
1e749832ed3b
core/statsmanager.lua

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core/statsmanager.lua @ 6577:1e749832ed3b

statsmanager: Perform an initial collection right after startup is completed
author Kim Alvefur <zash@zash.se>
date Sun, 22 Feb 2015 18:44:48 +0100
parent 6555:7b2d16c14659
child 6582:71b5de1d830b
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rev   line source
6554
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1
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2 local stats = require "util.statistics".new();
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3 local config = require "core.configmanager";
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4 local log = require "util.logger".init("stats");
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5 local timer = require "util.timer";
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6 local fire_event = prosody.events.fire_event;
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8 local stats_config = config.get("*", "statistics_interval");
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9 local stats_interval = tonumber(stats_config);
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10 if stats_config and not stats_interval then
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11 log("error", "Invalid 'statistics_interval' setting, statistics will be disabled");
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12 end
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14 local measure, collect;
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15 local latest_stats = {};
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16 local changed_stats = {};
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17 local stats_extra = {};
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18
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19 if stats_interval then
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20 log("debug", "Statistics collection is enabled every %d seconds", stats_interval);
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21 function measure(type, name)
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22 local f = assert(stats[type], "unknown stat type: "..type);
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23 return f(name);
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24 end
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25
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26 local mark_collection_start = measure("times", "stats.collection");
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27 local mark_processing_start = measure("times", "stats.processing");
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28
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29 function collect()
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30 local mark_collection_done = mark_collection_start();
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31 changed_stats, stats_extra = {}, {};
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32 for stat_name, getter in pairs(stats.get_stats()) do
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33 local type, value, extra = getter();
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34 local old_value = latest_stats[stat_name];
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35 latest_stats[stat_name] = value;
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36 if value ~= old_value then
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37 changed_stats[stat_name] = value;
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38 end
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39 if extra then
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40 stats_extra[stat_name] = extra;
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41 end
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42 end
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43 mark_collection_done();
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44 local mark_processing_done = mark_processing_start();
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45 fire_event("stats-updated", { stats = latest_stats, changed_stats = changed_stats, stats_extra = stats_extra });
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46 mark_processing_done();
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47 return stats_interval;
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48 end
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49
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50 timer.add_task(stats_interval, collect);
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51 prosody.events.add_handler("server-started", function () collect() end, -1);
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52 else
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53 log("debug", "Statistics collection is disabled");
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54 -- nop
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55 function measure()
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56 return measure;
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57 end
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58 function collect()
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59 end
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60 end
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61
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62 return {
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63 measure = measure;
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64 collect = collect;
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65 get_stats = function ()
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66 return latest_stats, changed_stats, stats_extra;
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67 end;
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68 };