gistfile1.lua

function event_handler(event)
	-- Do stuff
end

module:hook("event", event_handler)

function logger(event, handler_chain)
	local r = handler_chain(event);
	log("debug", "event %s was handled, the handler returned %s", event, tostring(r));
	return r;
end

module:wrap("event", logger)

function benchmarker(event, handler_chain)
	local time = gettime();
	local r = handler_chain(event);
	local diff = gettime() - time;
	log("debug", "event %s took %s seconds", event, diff);
	return r;
end

module:wrap("event", benchmarker, 10) -- include the logger's time!