redef abstract class Action
	# Prepare a `HttpResponse` destined to the client in response to the `request`
	#
	# `request` is fully formed request object with a reference to the session
	# if one already exists.
	#
	# `truncated_uri` is the ending of the full request URI, truncated from the route
	# leading to this `Action`.
	fun answer(request: HttpRequest, truncated_uri: String): HttpResponse is abstract

	# Full  to a `request` with sending the response and closing of the `http_server`
	#
	# Must users only need to implement `answer`, this method is for advanced use only.
	# It can be used to delay an answer until an event is raised or work is done on a different thread.
	#
	# By default this method calls `answer`, relays the response to `http_server.respond` and closes `http_server`.
	protected fun prepare_respond_and_close(request: HttpRequest, truncated_uri: String, http_server: HttpServer)
	do
		var response = answer(request, truncated_uri)
		http_server.respond response
		http_server.close
	end
end

redef class Action

	redef fun prepare_respond_and_close(request, truncated_uri, http_server) do
		if not log_nitcorn_actions then
			super
			return
		end

		print "{http_server.remote_address}: {class_name} prepare for url:'{request.url}' body:'{request.body}' cookie:'{request.cookie.join(",", ":")}'"

		var clock = new Clock

		super

		var perf = sys.perfs[class_name]
		perf.add(clock.lapse)
		if perf.count % perfs_print_period == 0 then print "{class_name} perfs: {perf}:"
	end
end