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annotate mod_pinger/mod_pinger.lua @ 4542:fb4a50bf60f1

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mod_prometheus: Invoke stats collection if in 'manual' mode Since 10d13e0554f9 a special value for statistics_interval "manual" exists, where a module is expected to invoke processing in connection to collection of stats. This makes internal collection and exporting to Prometheus happens at the same time with no chance of timers getting out of sync.
author Kim Alvefur <zash@zash.se>
date Tue, 13 Apr 2021 23:53:53 +0200
parents 8298b06e6603
children
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1 local new_watchdog = require "util.watchdog".new;
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2 local filters = require "util.filters";
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3 local st = require "util.stanza";
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5 local idle_timeout = module:get_option_number("c2s_idle_timeout", 300);
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6 local ping_timeout = module:get_option_number("c2s_ping_timeout", 30);
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8 function update_watchdog(data, session)
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9 if session.idle_watchdog then
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10 session.idle_watchdog:reset();
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11 session.idle_pinged = nil;
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12 end
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13 return data;
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14 end
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16 function check_session(watchdog)
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17 local session = watchdog.session;
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18 if session.smacks then
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19 unwatch_session(session);
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20 return;
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21 end
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22 if not session.idle_pinged then
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23 session.idle_pinged = true;
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24 session.send(st.iq({ type = "get", from = module.host, id = "idle-check" })
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25 :tag("ping", { xmlns = "urn:xmpp:ping" }));
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26 return ping_timeout; -- Call us again after ping_timeout
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27 else
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28 module:log("info", "Client %q silent for too long, closing...", session.full_jid);
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29 session:close("connection-timeout");
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30 end
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31 end
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34 function watch_session(session)
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35 if not session.idle_watchdog
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36 and not session.requests then -- Don't watch BOSH connections (BOSH already has timeouts)
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37 session.idle_watchdog = new_watchdog(idle_timeout, check_session);
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38 session.idle_watchdog.session = session;
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39 filters.add_filter(session, "bytes/in", update_watchdog);
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40 end
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41 end
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43 function unwatch_session(session)
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44 if session.idle_watchdog then
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45 filters.remove_filter(session, "bytes/in", update_watchdog);
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46 session.idle_watchdog:cancel();
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47 session.idle_watchdog = nil;
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48 end
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49 end
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51 module:hook("resource-bind", function (event) watch_session(event.session); end);
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52 module:hook("resource-unbind", function (event) unwatch_session(event.session); end);