prosody
902d25cd0557
plugins/mod_http_openmetrics.lua

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plugins/mod_http_openmetrics.lua @ 13554:902d25cd0557

mod_s2s: Limit size of outgoing stanza queue This queue is used to buffer stanzas while waiting for an outgoing s2s connection to be established. Limit it to prevent excessive memory usage. Default chosen to approximate how many average stanzas fits in the server_epoll default max_send_buffer_size of 32 MiB Returns a custom error instead of the default core.stanza_router "Communication with remote domains is not enabled" from is sent back, which does not describe what is happening here. Closes #1106
author Kim Alvefur <zash@zash.se>
date Sat, 09 Nov 2024 16:47:14 +0100
parent 12977:74b9e05af71e
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1 -- Export statistics in OpenMetrics format
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2 --
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3 -- Copyright (C) 2014 Daurnimator
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4 -- Copyright (C) 2018 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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5 -- Copyright (C) 2021 Jonas Schäfer <jonas@zombofant.net>
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6 --
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7 -- This module is MIT/X11 licensed.
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8
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9 module:set_global();
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10
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11 local statsman = require "prosody.core.statsmanager";
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12 local ip = require "prosody.util.ip";
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13
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14 local get_metric_registry = statsman.get_metric_registry;
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15 local collect = statsman.collect;
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16
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17 local get_metrics;
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18
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19 local permitted_ips = module:get_option_set("openmetrics_allow_ips", { "::1", "127.0.0.1" });
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20 local permitted_cidr = module:get_option_string("openmetrics_allow_cidr");
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21
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22 local function is_permitted(request)
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23 local ip_raw = request.ip;
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24 if permitted_ips:contains(ip_raw) or
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25 (permitted_cidr and ip.match(ip.new_ip(ip_raw), ip.parse_cidr(permitted_cidr))) then
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26 return true;
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27 end
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28 return false;
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29 end
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30
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31 function get_metrics(event)
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32 if not is_permitted(event.request) then
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33 return 403; -- Forbidden
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34 end
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35
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36 local response = event.response;
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37 response.headers.content_type = "application/openmetrics-text; version=0.0.4";
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38
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39 if collect then
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40 -- Ensure to get up-to-date samples when running in manual mode
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41 collect()
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42 end
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43
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44 local registry = get_metric_registry()
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45 if registry == nil then
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46 response.headers.content_type = "text/plain; charset=utf-8"
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47 response.status_code = 404
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48 return "No statistics provider configured\n"
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49 end
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50
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51 return registry:render();
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52 end
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53
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54 module:depends "http";
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55 module:provides("http", {
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56 default_path = "metrics";
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57 route = {
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58 GET = get_metrics;
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59 };
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60 });