prosody
5b03a8003659
util/statsd.lua

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util/statsd.lua @ 7937:5b03a8003659

mod_websocket: Include xml:lang attribute on stream <open> (fixes #840)
author Kim Alvefur <zash@zash.se>
date Thu, 02 Mar 2017 03:03:04 +0100
parent 7701:672a863105f6
child 7988:dc758422d896
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ebf2e77ac8a7 statsmanager, util.statsd: Add built-in statsd provider
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1 local socket = require "socket";
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2
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3 local time = require "socket".gettime;
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4
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5 local function new(config)
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6 if not config or not config.statsd_server then
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7 return nil, "No statsd server specified in the config, please see https://prosody.im/doc/statistics";
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8 end
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9
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10 local sock = socket.udp();
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11 sock:setpeername(config.statsd_server, config.statsd_port or 8125);
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12
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13 local prefix = (config.prefix or "prosody")..".";
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14
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15 local function send_metric(s)
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16 return sock:send(prefix..s);
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17 end
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18
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19 local function send_gauge(name, amount, relative)
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20 local s_amount = tostring(amount);
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21 if relative and amount > 0 then
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22 s_amount = "+"..s_amount;
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23 end
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24 return send_metric(name..":"..s_amount.."|g");
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25 end
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26
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27 local function send_counter(name, amount)
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28 return send_metric(name..":"..tostring(amount).."|c");
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29 end
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30
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31 local function send_duration(name, duration)
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32 return send_metric(name..":"..tostring(duration).."|ms");
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33 end
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34
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35 local function send_histogram_sample(name, sample)
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36 return send_metric(name..":"..tostring(sample).."|h");
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37 end
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38
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39 local methods;
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40 methods = {
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41 amount = function (name, initial)
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42 if initial then
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43 send_gauge(name, initial);
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44 end
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45 return function (new_v) send_gauge(name, new_v); end
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46 end;
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47 counter = function (name, initial) --luacheck: ignore 212/initial
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48 return function (delta)
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49 send_gauge(name, delta, true);
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50 end;
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51 end;
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52 rate = function (name)
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53 return function ()
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54 send_counter(name, 1);
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55 end;
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56 end;
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57 distribution = function (name, unit, type) --luacheck: ignore 212/unit 212/type
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58 return function (value)
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59 send_histogram_sample(name, value);
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60 end;
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61 end;
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62 sizes = function (name)
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63 name = name.."_size";
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64 return function (value)
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65 send_histogram_sample(name, value);
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66 end;
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67 end;
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68 times = function (name)
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69 return function ()
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70 local start_time = time();
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71 return function ()
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72 local end_time = time();
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73 local duration = end_time - start_time;
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74 send_duration(name, duration*1000);
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75 end
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76 end;
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77 end;
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78 };
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79 return methods;
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80 end
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81
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82 return {
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83 new = new;
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84 }