prosody
6b84d11aa09b
plugins/mod_http_openmetrics.lua

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plugins/mod_http_openmetrics.lua @ 13633:6b84d11aa09b

mod_storage_sql: Detect SQLite3 without UPSERT (or SQLCipher 3.x) SQLCipher v3.4.1 (the version in Debian 12) is based on SQLite3 v3.15.2, while UPSERT support was introduced in SQLite3 v3.24.0 This check was not needed before because we v3.24.0 has not been in a version of Debian we support for a long, long time. Note however that SQLCipher databases are not compatible across major versions, upgrading from v3.x to v4.x requires executing a migration. Attempts at making `prosodyctl mod_storage_sql upgrade` perform such a migration has not been successful. Executing the following in the `sqlcipher` tool should do the migration: PRAGMA key = '<key material>'; PRAGMA cipher_migrate;
author Kim Alvefur <zash@zash.se>
date Thu, 23 Jan 2025 19:33:05 +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 });