from abc import ABCMeta, abstractmethod
from six import add_metaclass

@add_metaclass(ABCMeta)
class SigningInterface(object):
  """
  Interface that represents all data store interactions required by the signing API endpoint.
  """
  @abstractmethod
  def is_trust_enabled(self, namespace_name, repo_name):
    """
    Returns whether the repository with the given namespace name and repository name exists and
    has trust enabled.
    """