text: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  """
  .. codeauthor:: Cédric Dumay <cedric.dumay@gmail.com>
  
  
  """
  import logging
  from kser.controller import Controller
  
  logger = logging.getLogger(__name__)
  
  
  class OperationRegistry(object):
      def __init__(self, app=None, controller_class=Controller):
          self.controller = controller_class()
          self.app = None
          if app:
              self.init_app(app)
  
      def subscribe(self, callback):
          if callback.path not in self.controller.ENTRYPOINTS:
              logger.info("Operation registry: loaded {}".format(callback.path))
              self.controller.register(callback.path, callback)
  
      def init_app(self, app=None):
          self.app = app
          self.load_tasks()
  
      def load_tasks(self):
          """ To implement, load operation tasks
  
          :return:
          """
  