Mercurial > prosody-modules
view mod_streamstats/mod_streamstats.lua @ 5668:ecfd7aece33b
mod_measure_modules: Report module statuses via OpenMetrics
Someone in the chat asked about a health check endpoint, which reminded
me of mod_http_status, which provides access to module statuses with
full details. After that, this idea came about, which seems natural.
As noted in the README, it could be used to monitor that critical
modules are in fact loaded correctly.
As more modules use the status API, the more useful this module and
mod_http_status becomes.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Fri, 06 Oct 2023 18:34:39 +0200 |
parents | a7f7a7e75737 |
children |
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module:set_global(); local stats = module:shared"stats"; local iter = require "util.iterators"; local count, keys = iter.count, iter.keys; stats.stats = stats.stats or {}; stats.conns = stats.conns or {}; setmetatable(stats, { __index = { broadcast = function (self, stat) local value = self.stats[stat]; for conn in pairs(self.conns) do conn:write(stat..":"..value.."\n"); end end; adjust = function (self, stat, delta) if delta == 0 then return; end self.stats[stat] = (self.stats[stat] or 0) + delta; self:broadcast(stat); end; set = function (self, stat, value) if value == self.stats[stat] then return; end self.stats[stat] = value; self:broadcast(stat); end; add_conn = function (self, conn) self.conns[conn] = true; for stat, value in pairs(self.stats) do conn:write(stat..":"..value.."\n"); end end; remove_conn = function (self, conn) self.conns[conn] = nil; end; }; }); local network = {}; function network.onconnect(conn) stats:add_conn(conn); end function network.onincoming(conn, data) end function network.ondisconnect(conn, reason) stats:remove_conn(conn); end module:add_timer(1, function () stats:set("s2s-in", count(keys(prosody.incoming_s2s))); return math.random(10, 20); end); module:add_timer(3, function () local s2sout_count = 0; for _, host in pairs(prosody.hosts) do s2sout_count = s2sout_count + count(keys(host.s2sout)); end stats:set("s2s-out", s2sout_count); return math.random(10, 20); end); function module.add_host(module) module:hook("resource-bind", function () stats:adjust("c2s", 1); end); module:hook("resource-unbind", function () stats:adjust("c2s", -1); end); local c2s_count = 0; for username, user in pairs(hosts[module.host].sessions or {}) do for resource, session in pairs(user.sessions or {}) do c2s_count = c2s_count + 1; end end stats:set("c2s", c2s_count); module:hook("s2sin-established", function (event) stats:adjust("s2s-in", 1); end); module:hook("s2sin-destroyed", function (event) stats:adjust("s2s-in", -1); end); module:hook("s2sout-established", function (event) stats:adjust("s2s-out", 1); end); module:hook("s2sout-destroyed", function (event) stats:adjust("s2s-out", -1); end); end module:provides("net", { default_port = 5444; listener = network; });