Mercurial > prosody-modules

annotate mod_http_stats_stream/mod_http_stats_stream.lua @ 3635:fd054689a64c

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mod_http_stats_stream: Use existing header preparation This allows the CORS support in mod_http to work.
author Kim Alvefur <zash@zash.se>
date Wed, 31 Jul 2019 18:55:06 +0200
parents 47a6f01231b2
children 740870196b97
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47a6f01231b2 mod_http_stats_stream: Sends statistics from statsmanager over an HTTP event stream
Kim Alvefur <zash@zash.se>
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1 local statsman = require "core.statsmanager";
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2 local http = require "net.http.server";
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3 local json = require "util.json";
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4
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5 local sessions = {};
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6
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7 local function updates_client_closed(response)
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8 module:log("debug", "Streamstats client closed");
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9 sessions[response] = nil;
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10 end
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11
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12 local function get_updates(event)
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13 local request, response = event.request, event.response;
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14
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15 response.on_destroy = updates_client_closed;
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16
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17 response.headers.content_type = "text/event-stream";
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18 response.headers.x_accel_buffering = "no"; -- for nginx maybe?
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19 local resp = http.prepare_header(response);
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20 table.insert(resp, "event: stats-full\r\n");
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21 table.insert(resp, "data: ");
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22 table.insert(resp, json.encode(statsman.get_stats()));
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23 table.insert(resp, "\r\n\r\n");
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24 response.conn:write(table.concat(resp));
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25
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26 sessions[response] = request;
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27 return true;
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28 end
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31 module:hook_global("stats-updated", function (event)
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32 local data = table.concat({
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33 "event: stats-updated";
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34 "data: "..json.encode(event.changed_stats);
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35 "";
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36 "";
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37 }, "\r\n")
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38 for response in pairs(sessions) do
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39 response.conn:write(data);
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40 end
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41 end);
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42
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43
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44 module:depends("http");
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45 module:provides("http", {
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46 route = {
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47 GET = get_updates;
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48 }
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49 });