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util/watchdog.lua @ 12630:781772c8b6d9
mod_mam: Store archives with sub-second precision timestamps
Changes sub-second part of example timestamp to .5 in order to avoid
floating point issues.
Some clients use timestamps when ordering messages which can lead to
messages having the same timestamp ending up in the wrong order.
It would be better to preserve the order messages are sent in, which is
the order they were stored in.
author | Kim Alvefur <zash@zash.se> |
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date | Sun, 14 Aug 2022 17:28:31 +0200 (2022-08-14) |
parent | 12547:e79c64b2dfed |
child | 12975:d10957394a3c |
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local timer = require "util.timer"; local setmetatable = setmetatable; local _ENV = nil; -- luacheck: std none local watchdog_methods = {}; local watchdog_mt = { __index = watchdog_methods }; local function new(timeout, callback) local watchdog = setmetatable({ timeout = timeout; callback = callback; timer_id = nil; }, watchdog_mt); watchdog:reset(); -- Kick things off return watchdog; end function watchdog_methods:reset(new_timeout) if new_timeout then self.timeout = new_timeout; end if self.timer_id then timer.reschedule(self.timer_id, self.timeout+1); else self.timer_id = timer.add_task(self.timeout+1, function () return self:callback(); end); end end function watchdog_methods:cancel() if self.timer_id then timer.stop(self.timer_id); self.timer_id = nil; end end return { new = new; };