mod_roster_command: Fix subscription when the "user JID" is a bare domain. Do not attempt to update the roster when the user is bare domain (e.g. a component), since they don't have rosters and the attempt results in an error: $ prosodyctl mod_roster_command subscribe proxy.example.com contact@example.com xxxxxxxxxxFailed to execute command: Error: /usr/lib/prosody/core/rostermanager.lua:104: attempt to concatenate local 'username' (a nil value) stack traceback: /usr/lib/prosody/core/rostermanager.lua:104: in function 'load_roster' /usr/lib/prosody/core/rostermanager.lua:305: in function 'set_contact_pending_out' mod_roster_command.lua:44: in function 'subscribe'

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);