Mercurial > prosody-modules

annotate mod_http_stats_stream/mod_http_stats_stream.lua @ 5648:c217f4edfc4f

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misc/mtail: Start of an mtail config Stashing it here in case anyone wants to continue working on it. Currently it's only counting log messages by level. Due to the permissions set by systemd on Prosody logs, mtail never managed to start correctly until permissions were manually relaxed.
author Kim Alvefur <zash@zash.se>
date Sun, 17 Sep 2023 13:36:30 +0200
parents bac3dae031ee
children
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1 module:set_global();
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2
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3 local statsman = require "core.statsmanager";
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4 local http = require "net.http.server";
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5 local json = require "util.json";
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6
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7 assert(statsman.get_stats, "not compatible with trunk based on openmetrics");
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8
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9 local sessions = {};
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10
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11 local function updates_client_closed(response)
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12 module:log("debug", "Streamstats client closed");
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13 sessions[response] = nil;
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14 end
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15
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16 local function get_updates(event)
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17 local request, response = event.request, event.response;
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18
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19 response.on_destroy = updates_client_closed;
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20
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21 response.headers.content_type = "text/event-stream";
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22 response.headers.x_accel_buffering = "no"; -- for nginx maybe?
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23 local resp = http.prepare_header(response);
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24 table.insert(resp, "event: stats-full\r\n");
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25 table.insert(resp, "data: ");
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26 table.insert(resp, json.encode(statsman.get_stats()));
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27 table.insert(resp, "\r\n\r\n");
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28 response.conn:write(table.concat(resp));
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29
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30 sessions[response] = request;
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31 return true;
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32 end
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34
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35 module:hook("stats-updated", function (event)
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36 local data = table.concat({
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37 "event: stats-updated";
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38 "data: "..json.encode(event.changed_stats);
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39 "";
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40 "";
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41 }, "\r\n")
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42 for response in pairs(sessions) do
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43 response.conn:write(data);
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44 end
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45 end);
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46
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47
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48 module:depends("http");
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49 module:provides("http", {
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50 route = {
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51 GET = get_updates;
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52 }
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53 });