mod_http_errors: Add way to reuse the error page template
module:fire_event("http-message", {title = "hello"; message = "world"})
Goal is to enable consistent messages from Prosody. Not necessarily
error messages, but warnings or just notices.
This does cause some drift in the purpose of mod_http_errors, but that's
okay.
local gettime = require "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;
};