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mod_http_user_count/mod_http_user_count.lua @ 4877:adc6241e5d16
mod_measure_process: Report the enforced limit
The soft limit is what the kernel actually enforces, while the hard
limit is is how far you can change the soft limit without privileges.
Unless the process dynamically adjusts the soft limit, knowing the hard
limit is not as useful as knowing the soft limit.
Reporting the soft limit and the number of in-use FDs allows placing
alerts on expressions like 'process_open_fds / process_max_fds >= 0.95'
author | Kim Alvefur <zash@zash.se> |
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date | Tue, 18 Jan 2022 18:55:20 +0100 |
parent | 1830:a45f2f79e99b |
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local it = require "util.iterators"; local jid_split = require "util.jid".prepped_split; module:depends("http"); local function check_muc(jid) local room_name, host = jid_split(jid); if not hosts[host] then return nil, "No such host: "..host; elseif not hosts[host].modules.muc then return nil, "Host '"..host.."' is not a MUC service"; end return room_name, host; end module:provides("http", { route = { ["GET /sessions"] = function () return tostring(it.count(it.keys(prosody.full_sessions))); end; ["GET /users"] = function () return tostring(it.count(it.keys(prosody.bare_sessions))); end; ["GET /host"] = function () return tostring(it.count(it.keys(prosody.hosts[module.host].sessions))); end; ["GET /room/*"] = function (request, room_jid) local name, host = check_muc(room_jid); if not name then return "0"; end local room = prosody.hosts[host].modules.muc.rooms[name.."@"..host]; if not room then return "0"; end return tostring(it.count(it.keys(room._occupants))); end; }; });