def _attach_interfaces_to_driver(driver, node, driver_name=None):
driver_singleton = get_driver(driver_name or node.driver)
for iface in driver_singleton.all_interfaces:
impl = getattr(driver_singleton, iface, None)
setattr(driver, iface, impl)
network_iface = node.network_interface
network_factory = NetworkInterfaceFactory()
try:
net_driver = network_factory.get_driver(network_iface)
except KeyError:
raise exception.DriverNotFoundInEntrypoint(
driver_name=network_iface,
entrypoint=network_factory._entrypoint_name)
driver.network = net_driver
def missing_callback(names):
names = ', '.join(names)
raise exception.DriverNotFoundInEntrypoint(
names=names, entrypoint=cls._entrypoint_name)
def _init_extension_manager(cls):
# NOTE(deva): In case multiple greenthreads queue up on this lock
# before _extension_manager is initialized, prevent
# creation of multiple NameDispatchExtensionManagers.
if cls._extension_manager:
return
enabled_drivers = getattr(CONF, cls._enabled_driver_list_config_option,
[])
# Check for duplicated driver entries and warn the operator
# about them
counter = collections.Counter(enabled_drivers).items()
duplicated_drivers = []
cls._enabled_driver_list = []
for item, cnt in counter:
if not item:
LOG.warning(
_LW('An empty driver was specified in the "%s" '
'configuration option and will be ignored. Please '
'fix your ironic.conf file to avoid this warning '
'message.'), cls._enabled_driver_list_config_option)
continue
if cnt > 1:
duplicated_drivers.append(item)
cls._enabled_driver_list.append(item)
if duplicated_drivers:
LOG.warning(
_LW('The driver(s) "%s" is/are duplicated in the '
'list of enabled_drivers. Please check your '
'configuration file.'), ', '.join(duplicated_drivers))
# NOTE(deva): Drivers raise "DriverLoadError" if they are unable to be
# loaded, eg. due to missing external dependencies.
# We capture that exception, and, only if it is for an
# enabled driver, raise it from here. If enabled driver
# raises other exception type, it is wrapped in
# "DriverLoadError", providing the name of the driver that
# caused it, and raised. If the exception is for a
# non-enabled driver, we suppress it.
def _catch_driver_not_found(mgr, ep, exc):
# NOTE(deva): stevedore loads plugins *before* evaluating
# _check_func, so we need to check here, too.
if ep.name in cls._enabled_driver_list:
if not isinstance(exc, exception.DriverLoadError):
raise exception.DriverLoadError(driver=ep.name, reason=exc)
raise exc
def _check_func(ext):
return ext.name in cls._enabled_driver_list
cls._extension_manager = (dispatch.NameDispatchExtensionManager(
cls._entrypoint_name,
_check_func,
invoke_on_load=True,
on_load_failure_callback=_catch_driver_not_found,
propagate_map_exceptions=True))
# NOTE(deva): if we were unable to load any configured driver, perhaps
# because it is not present on the system, raise an error.
if (sorted(cls._enabled_driver_list) != sorted(
cls._extension_manager.names())):
found = cls._extension_manager.names()
names = [n for n in cls._enabled_driver_list if n not in found]
# just in case more than one could not be found ...
names = ', '.join(names)
raise exception.DriverNotFoundInEntrypoint(
names=names, entrypoint=cls._entrypoint_name)
# warn for any untested/unsupported/deprecated drivers or interfaces
cls._extension_manager.map(cls._extension_manager.names(),
_warn_if_unsupported)
LOG.info(cls._logging_template, cls._extension_manager.names())
