Synnefo

class LazyAstakosUrl(object):

    def __init__(self, endpoints_name):

        self.endpoints_name = endpoints_name

    def __str__(self):

        if not hasattr(self, 'str'):

            try:

                astakos_client = \

                    AstakosClient(cyclades_settings.SERVICE_TOKEN,

                                  settings.ASTAKOS_AUTH_URL)

                self.str = getattr(astakos_client, self.endpoints_name)

            except Exception, e:

                logger.exception(e)

                return ''

        return self.str

LOGIN_URL = join_urls(str(LazyAstakosUrl('ui_url')), 'login')