text: """
  Scheduler Service
  """
  import utils
  
  
  DEFAULT_SCHEDULER_DRIVER = scheduler.filter_scheduler.FilterScheduler
  
  class SchedulerManager(Object):
  
      def __init__(self, scheduler_driver=None, *args, **kwargs):
          if not scheduler_driver:
              scheduler_driver = DEFAULT_SCHEDULER_DRIVER
          self.driver = utils.import_class(scheduler_driver)(*args, **kwargs)
  
      def select_destinations(self, request_spec, filter_properties):
          dests = self.driver.select_destinations(request_spec,
              filter_properties)
          return dests
  