annotate mod_http_stats_stream/mod_http_stats_stream.lua @ 4049:78f1de5301fc

mod_adhoc_dataforms_demo: Fix duplicate field prevention It's supposed to only include each type of form field once per form at most but it didn't note which fields it had added already. No idea what the probability was anyways, probably pretty low.
author Kim Alvefur <zash@zash.se>
date Tue, 23 Jun 2020 19:40:55 +0200
parents 740870196b97
children bac3dae031ee
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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 local sessions = {};
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8
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9 local function updates_client_closed(response)
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10 module:log("debug", "Streamstats client closed");
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11 sessions[response] = nil;
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12 end
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14 local function get_updates(event)
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15 local request, response = event.request, event.response;
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16
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17 response.on_destroy = updates_client_closed;
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18
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19 response.headers.content_type = "text/event-stream";
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20 response.headers.x_accel_buffering = "no"; -- for nginx maybe?
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21 local resp = http.prepare_header(response);
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22 table.insert(resp, "event: stats-full\r\n");
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23 table.insert(resp, "data: ");
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24 table.insert(resp, json.encode(statsman.get_stats()));
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25 table.insert(resp, "\r\n\r\n");
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26 response.conn:write(table.concat(resp));
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27
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28 sessions[response] = request;
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29 return true;
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30 end
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32
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33 module:hook("stats-updated", function (event)
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34 local data = table.concat({
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35 "event: stats-updated";
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36 "data: "..json.encode(event.changed_stats);
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37 "";
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38 "";
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39 }, "\r\n")
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40 for response in pairs(sessions) do
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41 response.conn:write(data);
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42 end
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43 end);
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44
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45
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46 module:depends("http");
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47 module:provides("http", {
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48 route = {
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49 GET = get_updates;
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50 }
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51 });