prosody
4b3c129e96f2
util/statsd.lua

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util/statsd.lua @ 10092:4b3c129e96f2 0.11

mod_websocket: Clone stanza before mutating (fixes #1398) Checking for `stanza.attr.xmlns == nil` to determine if the stanza object is an actual stanza (`<message>`, `<presence>` or `<iq>` in the `jabber:client` or `jabbber:server` namespace) or some other stream element. Since this mutation is not reverted, it may leak to other places and cause them to mistreat stanzas as stream elements. Especially in cases like MUC where a single stanza is broadcast to many recipients.
author Kim Alvefur <zash@zash.se>
date Sat, 20 Jul 2019 04:19:58 +0200
parent 7988:dc758422d896
child 10924:0c072dd69603
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1 local socket = require "socket";
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2
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3 local time = require "util.time".now
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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 }