def reconfigure_services(self, *service_names):
        """
        Update all files for one or more registered services, and,
        if ready, optionally restart them.

        If no service names are given, reconfigures all registered services.
        """
        for service_name in service_names or self.services.keys():
            if self.is_ready(service_name):
                self.fire_event('data_ready', service_name)
                self.fire_event('start', service_name, default=[
                    service_restart,
                    manage_ports])
                self.save_ready(service_name)
            else:
                if self.was_ready(service_name):
                    self.fire_event('data_lost', service_name)
                self.fire_event('stop', service_name, default=[
                    manage_ports,
                    service_stop])
                self.save_lost(service_name)
Update all files for one or more registered services, and,
        if ready, optionally restart them.

        If no service names are given, reconfigures all registered services.