Mercurial > prosody-modules

annotate mod_http_stats_stream/mod_http_stats_stream.lua @ 5119:048e339706ba

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mod_rest: Remove manual reference expansion in schema This hack was originally added to reduce the number of definitions of common attributes (type, to, from etc) and payloads (e.g. delay). This predated pointers and references, and until now was needed because parsing picked out the correct stanza kind from the schema, which broke internal references. Removing this hack paves the way for allowing the schema to be configured or customized more easily.
author Kim Alvefur <zash@zash.se>
date Tue, 20 Dec 2022 21:48:28 +0100
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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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 });