This interface layer handles the communication with Keystone via the 'keystone-federated-backend' interface protocol.

The interface layer will set the following state:

• {relation_name}.connected The relation is established.

For example:

from charms.reactive import when


@when(federated-backend.connected')
@when('configuration.complete')
def configure_federation(federation):
    domain.wsgi_config_fragment('wsgi_fragment_path')
    domain.trigger_restart()