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plugins/mod_http_openmetrics.lua @ 13174:8ec7b7d6556f
util.cache: Keep eviction candidate if callback resized to make room
Previously either the old or the new values would be rejected, even if
the cache was resized to allow more items.
author | Kim Alvefur <zash@zash.se> |
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date | Fri, 30 Jun 2023 22:01:49 +0200 |
parent | 12977:74b9e05af71e |
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-- Export statistics in OpenMetrics format -- -- Copyright (C) 2014 Daurnimator -- Copyright (C) 2018 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> -- Copyright (C) 2021 Jonas Schäfer <jonas@zombofant.net> -- -- This module is MIT/X11 licensed. module:set_global(); local statsman = require "prosody.core.statsmanager"; local ip = require "prosody.util.ip"; local get_metric_registry = statsman.get_metric_registry; local collect = statsman.collect; local get_metrics; local permitted_ips = module:get_option_set("openmetrics_allow_ips", { "::1", "127.0.0.1" }); local permitted_cidr = module:get_option_string("openmetrics_allow_cidr"); local function is_permitted(request) local ip_raw = request.ip; if permitted_ips:contains(ip_raw) or (permitted_cidr and ip.match(ip.new_ip(ip_raw), ip.parse_cidr(permitted_cidr))) then return true; end return false; end function get_metrics(event) if not is_permitted(event.request) then return 403; -- Forbidden end local response = event.response; response.headers.content_type = "application/openmetrics-text; version=0.0.4"; if collect then -- Ensure to get up-to-date samples when running in manual mode collect() end local registry = get_metric_registry() if registry == nil then response.headers.content_type = "text/plain; charset=utf-8" response.status_code = 404 return "No statistics provider configured\n" end return registry:render(); end module:depends "http"; module:provides("http", { default_path = "metrics"; route = { GET = get_metrics; }; });