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annotate mod_http_user_count/mod_http_user_count.lua @ 5668:ecfd7aece33b

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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 a45f2f79e99b
children
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fe29627a5ed8 mod_http_user_count: HTTP module to report the current number of online users or sessions
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1 local it = require "util.iterators";
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2 local jid_split = require "util.jid".prepped_split;
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3
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4 module:depends("http");
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5
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6 local function check_muc(jid)
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7 local room_name, host = jid_split(jid);
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8 if not hosts[host] then
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9 return nil, "No such host: "..host;
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10 elseif not hosts[host].modules.muc then
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11 return nil, "Host '"..host.."' is not a MUC service";
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12 end
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13 return room_name, host;
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14 end
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15
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16 module:provides("http", {
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17 route = {
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18 ["GET /sessions"] = function () return tostring(it.count(it.keys(prosody.full_sessions))); end;
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19 ["GET /users"] = function () return tostring(it.count(it.keys(prosody.bare_sessions))); end;
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20 ["GET /host"] = function () return tostring(it.count(it.keys(prosody.hosts[module.host].sessions))); end;
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21 ["GET /room/*"] = function (request, room_jid)
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22 local name, host = check_muc(room_jid);
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23 if not name then
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24 return "0";
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25 end
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26 local room = prosody.hosts[host].modules.muc.rooms[name.."@"..host];
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27 if not room then
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28 return "0";
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29 end
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30 return tostring(it.count(it.keys(room._occupants)));
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31 end;
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32 };
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33 });