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util/watchdog.lua @ 12580:a9dbf657c894 0.12
util.datamapper: Improve handling of schemas with non-obvious "type"
The JSON Schema specification says that schemas are objects or booleans,
and that the 'type' property is optional and can be an array.
This module previously allowed bare type names as schemas and did not
really handle booleans.
It now handles missing 'type' properties and boolean 'true' as a schema.
Objects and arrays are guessed based on the presence of 'properties' or
'items' field.
author | Kim Alvefur <zash@zash.se> |
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date | Fri, 08 Jul 2022 17:32:48 +0200 |
parent | 8555:4f0f5b49bb03 |
child | 12545:5059a639f61e |
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local timer = require "util.timer"; local setmetatable = setmetatable; local os_time = os.time; 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, last_reset = os_time(), callback = callback }, watchdog_mt); timer.add_task(timeout+1, function (current_time) local last_reset = watchdog.last_reset; if not last_reset then return; end local time_left = (last_reset + timeout) - current_time; if time_left < 0 then return watchdog:callback(); end return time_left + 1; end); return watchdog; end function watchdog_methods:reset() self.last_reset = os_time(); end function watchdog_methods:cancel() self.last_reset = nil; end return { new = new; };