mod_firewall: Initialize compiled chunk just once for all handlers This should fix a case where some stateful dependencies (such as throttles) produce separate instances for every call to new_handler(), leading to surprising behaviour (e.g. rules executed via JUMP CHAIN vs ::deliver would have separate rate limits). This also adds better error handling in case the compiled code fails to run for some reason.

module:set_global();

local function sink_maker(config)
	local levels = {
		debug = module:measure("log.debug", "rate");
		info = module:measure("log.info", "rate");
		warn = module:measure("log.warn", "rate");
		error = module:measure("log.error", "rate");
	};
	return function (_, level)
		return levels[level]();
	end
end

require"core.loggingmanager".register_sink_type("measure", sink_maker);