def get_client_class(api_name, version, version_map):
"""Returns the client class for the requested API version
:param api_name: the name of the API, e.g. 'compute', 'image', etc
:param version: the requested API version
:param version_map: a dict of client classes keyed by version
:rtype: a client class for the requested API version
"""
try:
client_path = version_map[str(version)]
except (KeyError, ValueError):
sorted_versions = sorted(version_map.keys(),
key=lambda s: list(map(int, s.split('.'))))
msg = _("Invalid %(api_name)s client version '%(version)s'. "
"must be one of: %(version_map)s")
raise exceptions.UnsupportedVersion(
msg % {
'api_name': api_name,
'version': version,
'version_map': ', '.join(sorted_versions),
})
return importutils.import_class(client_path)
def take_action(self, parsed_args):
msg = _("Current BGP VPN API does not permit to update any %s "
"association attributes") % self._assoc_res_name
raise exceptions.UnsupportedVersion(msg)