util.startup: Check root after detecting platform and reading config (thanks SigmaTel71)
Ensures that startup.detect_platform() runs so know whether to use the
POSIX method of checking the current user or something else. Also after
reading the config so we know whether the root override setting is set.
local gettime = require "prosody.util.time".now
local setmetatable = setmetatable;
local _ENV = nil;
-- luacheck: std none
local throttle = {};
local throttle_mt = { __index = throttle };
function throttle:update()
local newt = gettime();
local elapsed = newt - self.t;
self.t = newt;
local balance = (self.rate * elapsed) + self.balance;
if balance > self.max then
self.balance = self.max;
else
self.balance = balance;
end
return self.balance;
end
function throttle:peek(cost)
cost = cost or 1;
return self.balance >= cost or self:update() >= cost;
end
function throttle:poll(cost, split)
if self:peek(cost) then
self.balance = self.balance - cost;
return true;
else
local balance = self.balance;
if split then
self.balance = 0;
end
return false, balance, (cost-balance);
end
end
local function create(max, period)
return setmetatable({ rate = max / period, max = max, t = gettime(), balance = max }, throttle_mt);
end
return {
create = create;
};