prosody
a9ad287c3388
util/watchdog.lua

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util/watchdog.lua @ 11821:a9ad287c3388

core.moduleapi: Filter out unrelated direct replies to module:send_iq This is primarily something that happens with an internal query to mod_mam, which calls origin.send() several times with results, leading to the first such result being treated as the final response and resolving the promise. Now, these responses pass trough to the underlying origin.send(), where they can be caught. Tricky but not impossible. For remote queries, it's even trickier, you would likely need to bind a resource or similar.
author Kim Alvefur <zash@zash.se>
date Fri, 24 Sep 2021 20:12:16 +0200
parent 8555:4f0f5b49bb03
child 12545:5059a639f61e
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0ed617f58404 util.watchdog: Watchdog timer library
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1 local timer = require "util.timer";
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2 local setmetatable = setmetatable;
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3 local os_time = os.time;
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4
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5 local _ENV = nil;
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6 -- luacheck: std none
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8 local watchdog_methods = {};
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9 local watchdog_mt = { __index = watchdog_methods };
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10
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11 local function new(timeout, callback)
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12 local watchdog = setmetatable({ timeout = timeout, last_reset = os_time(), callback = callback }, watchdog_mt);
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13 timer.add_task(timeout+1, function (current_time)
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14 local last_reset = watchdog.last_reset;
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15 if not last_reset then
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16 return;
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17 end
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18 local time_left = (last_reset + timeout) - current_time;
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19 if time_left < 0 then
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20 return watchdog:callback();
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21 end
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22 return time_left + 1;
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23 end);
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24 return watchdog;
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25 end
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27 function watchdog_methods:reset()
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28 self.last_reset = os_time();
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29 end
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30
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31 function watchdog_methods:cancel()
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32 self.last_reset = nil;
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33 end
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34
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35 return {
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36 new = new;
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37 };