def __init__(self):
# Ordered list of extension drivers, defining
# the order in which the drivers are called.
self.ordered_ext_drivers = []
LOG.info(_LI("Configured extension driver names: %s"),
_EXTENSION_DRIVERS)
super(ExtensionManager, self).__init__('neutron.ml2.extension_drivers',
_EXTENSION_DRIVERS,
invoke_on_load=True,
name_order=True)
LOG.info(_LI("Loaded extension driver names: %s"), self.names())
self._register_drivers()
def _register_drivers(self):
"""Register all extension drivers.
This method should only be called once in the ExtensionManager
constructor.
"""
for ext in self:
self.ordered_ext_drivers.append(ext)
LOG.info(_LI("Registered extension drivers: %s"),
[driver.name for driver in self.ordered_ext_drivers])
def extension_aliases(self):
exts = []
for driver in self.ordered_ext_drivers:
alias = driver.obj.extension_alias
if alias:
exts.append(alias)
LOG.info(_LI("Got %(alias)s extension from driver '%(drv)s'"),
{
'alias': alias,
'drv': driver.name
})
return exts
def _call_on_ext_drivers(self, method_name, plugin_context, data, result):
"""Helper method for calling a method across all extension drivers."""
for driver in self.ordered_ext_drivers:
try:
getattr(driver.obj, method_name)(plugin_context, data, result)
except Exception:
with excutils.save_and_reraise_exception():
LOG.info(
_LI("Extension driver '%(name)s' failed in "
"%(method)s"), {
'name': driver.name,
'method': method_name
})
def initialize(self):
# Initialize each driver in the list.
for driver in self.ordered_ext_drivers:
LOG.info(_LI("Initializing extension driver '%s'"), driver.name)
driver.obj.initialize()
def __init__(self):
LOG.info(_LI("ML2 UplinkTypeDriver initialization complete"))
def __init__(self):
LOG.info(_LI("ML2 MidonetTypeDriver initialization complete"))
