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annotate mod_http_stats_stream/mod_http_stats_stream.lua @ 3587:c24d43ababc6

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mod_storage_xmlarchive: Try harder to limit range of time to check Fixes read of entire index in case where the time range is outside the range present in the archive.
author Kim Alvefur <zash@zash.se>
date Tue, 07 May 2019 17:10:07 +0200
parents 47a6f01231b2
children fd054689a64c
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47a6f01231b2 mod_http_stats_stream: Sends statistics from statsmanager over an HTTP event stream
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1 local statsman = require "core.statsmanager";
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2 local json = require "util.json";
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3
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4 local sessions = {};
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5
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6 local function updates_client_closed(response)
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7 module:log("debug", "Streamstats client closed");
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8 sessions[response] = nil;
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9 end
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10
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11 local function get_updates(event)
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12 local request, response = event.request, event.response;
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13
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14 response.on_destroy = updates_client_closed;
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15
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16 response.conn:write(table.concat({
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17 "HTTP/1.1 200 OK";
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18 "Content-Type: text/event-stream";
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19 "X-Accel-Buffering: no"; -- For nginx maybe?
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20 "";
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21 "event: stats-full";
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22 "data: "..json.encode(statsman.get_stats());
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23 "";
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24 "";
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25 }, "\r\n"));
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26
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27 sessions[response] = request;
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28 return true;
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29 end
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30
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31
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32 module:hook_global("stats-updated", function (event)
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33 local data = table.concat({
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34 "event: stats-updated";
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35 "data: "..json.encode(event.changed_stats);
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36 "";
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37 "";
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38 }, "\r\n")
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39 for response in pairs(sessions) do
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40 response.conn:write(data);
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41 end
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42 end);
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43
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44
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45 module:depends("http");
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46 module:provides("http", {
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47 route = {
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48 GET = get_updates;
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49 }
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50 });