prosody
1cdaf21584da
util/watchdog.lua

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util/watchdog.lua @ 12831:1cdaf21584da 0.12

net.http.server: Fix #1789 Unregistering the response before sending the trailer of the chunked transfer encoding prevents opportunistic writes from being invoked and running this code again when, which may cause an error when closing the file handle a second time. Normally the file size is known, so no chuck headers are sent.
author Kim Alvefur <zash@zash.se>
date Sun, 08 Jan 2023 13:35:04 +0100
parent 8555:4f0f5b49bb03
child 12545:5059a639f61e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
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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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0ed617f58404 util.watchdog: Watchdog timer library
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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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26
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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 };