util.hashring: Support associating arbitrary data with nodes In this API, a 'node' is always a simple text string. Sometimes the caller may have a more complex structure representing a node, but the hash ring is really only concerned with the node's name. This API change allows :add_nodes() to take a table of `node_name = value` pairs, as well as the simple array of node names previously accepted. The 'value' of the selected node is returned as a new second result from :get_node(). If no value is passed when a node is added, it defaults to `true` (as before, but this was never previously exposed).

local record util
	enum loglevel
		"debug"
		"info"
		"warn"
		"error"
	end
	type logger = function ( loglevel, string, ...:any )
	type sink = function ( string, loglevel, string, ...:any )
	type simple_sink = function ( string, loglevel, string )
	init : function ( string ) : logger
	make_logger : function ( string, loglevel ) : function ( string, ...:any )
	reset : function ()
	add_level_sink : function ( loglevel, sink )
	add_simple_sink : function ( simple_sink, { loglevel } )
end

return util