gistfile1.txt

  def sync_repo(self, repo, sync_conduit, config):
    metadata = _fetch_repo_metadata(repo, config)

    new_units = _resolve_units_to_download(metadata, sync_conduit)

  def _fetch_repo_metadata(repo, config):
    """
    Retrieves the listing of Puppet modules at the configured 'feed' location.

    :return: list of modules in the external repository
    :rtype:  list
    """
    # Stub method

  def _resolve_units_to_download(metadata, sync_conduit):
    """
    Analyzes the metadata describing modules in the external repository against those already in
    the Pulp repository. The conduit is used to query the Pulp server for the repository's modules.

    :return: list of modules that need to be downloaded from the external repository
    :rtype:  list
    """
    # Units currently in the repository
    module_criteria = UnitAssociationCriteria(type_ids='puppet_module')
    existing_units = self.sync_conduit.get_units(criteria=module_criteria)

    # Calculate the difference between existing_units and what is in the metadata