def is_trunk_service_loaded():
for service_plugins in cfg.CONF.service_plugins:
try:
klass = runtime.load_class_by_alias_or_classname(
'neutron.service_plugins', service_plugins)
if klass.__name__ == 'TrunkPlugin':
return True
except ImportError:
continue
return False
def load_and_init_conntrack_driver(*args, **kwargs):
driver = cfg.CONF.fwaas.conntrack_driver
try:
conntrack_driver_cls = runtime.load_class_by_alias_or_classname(
'neutron.agent.l3.firewall_drivers', driver)
except ImportError:
with excutils.save_and_reraise_exception():
LOG.exception("Driver '%s' not found.", driver)
conntrack_driver = conntrack_driver_cls()
conntrack_driver.initialize(*args, **kwargs)
return conntrack_driver
def load_and_init_conntrack_driver(*args, **kwargs):
driver = cfg.CONF.fwaas.conntrack_driver
try:
conntrack_driver_cls = runtime.load_class_by_alias_or_classname(
'neutron.agent.l3.firewall_drivers', driver)
except ImportError:
with excutils.save_and_reraise_exception():
LOG.exception("Driver '%s' not found.", driver)
conntrack_driver = conntrack_driver_cls()
conntrack_driver.initialize(*args, **kwargs)
return conntrack_driver
def _load_firewall_extension_driver(namespace, driver):
"""Loads driver using alias or class name
:param namespace: namespace where alias is defined
:param driver: driver alias or class name
:returns driver that is loaded
:raises ImportError if fails to load driver
"""
try:
return runtime.load_class_by_alias_or_classname(namespace, driver)
except ImportError:
with excutils.save_and_reraise_exception():
LOG.error("Driver '%s' not found.", driver)
def _load_port_forwarding_class():
"""Load port forwarding plugin
:returns: instance of plugin that is loaded
:raises ImportError: if fails to load plugin
"""
try:
loaded_class = runtime.load_class_by_alias_or_classname(
'neutron.service_plugins', 'port_forwarding')
return loaded_class()
except ImportError:
with excutils.save_and_reraise_exception():
LOG.error("Error loading port_forwarding plugin")
def load_interface_driver(conf):
"""Load interface driver for agents like DHCP or L3 agent.
:param conf: driver configuration object
:raises SystemExit of 1 if driver cannot be loaded
"""
try:
loaded_class = runtime.load_class_by_alias_or_classname(
INTERFACE_NAMESPACE, conf.interface_driver)
return loaded_class(conf)
except ImportError:
LOG.error("Error loading interface driver '%s'", conf.interface_driver)
raise SystemExit(1)
def __init__(self):
super(TricirclePlugin, self).__init__()
core_plugins_namespace = 'neutron.core_plugins'
plugin_provider = cfg.CONF.tricircle.real_core_plugin
plugin_class = runtime.load_class_by_alias_or_classname(
core_plugins_namespace, plugin_provider)
self.core_plugin = plugin_class()
self.neutron_handle = resource_handle.NeutronResourceHandle(
cfg.CONF.client.auth_url)
self.neutron_handle.endpoint_url = \
cfg.CONF.tricircle.central_neutron_url
self.on_trunk_create = {}
self.on_subnet_delete = {}
neutronclient.USER_AGENT = t_constants.LOCAL
def __init__(self):
super(TricirclePlugin, self).__init__()
core_plugins_namespace = 'neutron.core_plugins'
plugin_provider = cfg.CONF.tricircle.real_core_plugin
plugin_class = runtime.load_class_by_alias_or_classname(
core_plugins_namespace, plugin_provider)
self.core_plugin = plugin_class()
self.neutron_handle = resource_handle.NeutronResourceHandle(
cfg.CONF.client.auth_url)
self.neutron_handle.endpoint_url = \
cfg.CONF.tricircle.central_neutron_url
self.on_trunk_create = {}
self.on_subnet_delete = {}
neutronclient.USER_AGENT = t_constants.LOCAL
def get_bridge_manager(conf):
"""Get Bridge Manager.
:param conf: bridge manager configuration object
:raises SystemExit of 1 if driver cannot be loaded
"""
try:
loaded_class = runtime.load_class_by_alias_or_classname(
bridge_manager.BRIDGE_MANAGER_NAMESPACE, conf.bridge_manager)
return loaded_class()
except ImportError:
LOG.error(_("Error loading bridge manager '%s'"), conf.bridge_manager)
raise SystemExit(1)
def load_metering_driver(plugin, conf):
"""Load metering driver
:param plugin: the metering plugin
:param conf: driver configuration object
:raises SystemExit of 1 if driver cannot be loaded
"""
try:
loaded_class = runtime.load_class_by_alias_or_classname(
METERING_NAMESPACE, conf.driver)
return loaded_class(plugin, conf)
except ImportError:
LOG.error("Error loading metering driver '%s'", conf.driver)
raise SystemExit(1)
def load_class_for_provider(namespace, plugin_provider):
"""Loads plugin using alias or class name
:param namespace: namespace where alias is defined
:param plugin_provider: plugin alias or class name
:returns: plugin that is loaded
:raises ImportError: if fails to load plugin
"""
try:
return runtime.load_class_by_alias_or_classname(
namespace, plugin_provider)
except ImportError:
with excutils.save_and_reraise_exception():
LOG.error("Plugin '%s' not found.", plugin_provider)
def load_class_for_provider(namespace, plugin_provider):
"""Loads plugin using alias or class name
:param namespace: namespace where alias is defined
:param plugin_provider: plugin alias or class name
:returns: plugin that is loaded
:raises ImportError: if fails to load plugin
"""
try:
return runtime.load_class_by_alias_or_classname(namespace,
plugin_provider)
except ImportError:
with excutils.save_and_reraise_exception():
LOG.error("Plugin '%s' not found.", plugin_provider)
def load_interface_driver(conf):
"""Load interface driver for agents like DHCP or L3 agent.
:param conf: driver configuration object
:raises SystemExit of 1 if driver cannot be loaded
"""
try:
loaded_class = runtime.load_class_by_alias_or_classname(
INTERFACE_NAMESPACE, conf.interface_driver)
return loaded_class(conf)
except ImportError:
LOG.error("Error loading interface driver '%s'",
conf.interface_driver)
raise SystemExit(1)
def load_metering_driver(plugin, conf):
"""Load metering driver
:param plugin: the metering plugin
:param conf: driver configuration object
:raises SystemExit of 1 if driver cannot be loaded
"""
try:
loaded_class = runtime.load_class_by_alias_or_classname(
METERING_NAMESPACE, conf.driver)
return loaded_class(plugin, conf)
except ImportError:
LOG.error("Error loading metering driver '%s'", conf.driver)
raise SystemExit(1)
def load_interface_driver(conf, get_networks_callback=None):
"""Load interface driver for agents like DHCP or L3 agent.
:param conf: Driver configuration object
:param get_networks_callback: A callback to get network information.
This will be passed as additional keyword
argument to the interface driver.
:raises SystemExit of 1 if driver cannot be loaded
"""
try:
loaded_class = runtime.load_class_by_alias_or_classname(
INTERFACE_NAMESPACE, conf.interface_driver)
return loaded_class(conf, get_networks_callback=get_networks_callback)
except ImportError:
LOG.error("Error loading interface driver '%s'", conf.interface_driver)
raise SystemExit(1)
def __init__(self, conf, plugin_rpc, process_monitor):
super(HaproxyNSDriver, self).__init__(conf, plugin_rpc,
process_monitor)
self.state_path = conf.haproxy.loadbalancer_state_path
self.state_path = os.path.join(
self.conf.haproxy.loadbalancer_state_path, STATE_PATH_V2_APPEND)
try:
vif_driver_class = runtime.load_class_by_alias_or_classname(
'neutron.interface_drivers', conf.interface_driver)
except ImportError:
with excutils.save_and_reraise_exception():
msg = (_('Error importing interface driver: %s') %
conf.interface_driver)
LOG.error(msg)
self.vif_driver = vif_driver_class(conf)
self.deployed_loadbalancers = {}
self._loadbalancer = LoadBalancerManager(self)
self._listener = ListenerManager(self)
self._pool = PoolManager(self)
self._member = MemberManager(self)
self._healthmonitor = HealthMonitorManager(self)
def __init__(self, conf, plugin_rpc, process_monitor):
super(HaproxyNSDriver, self).__init__(conf, plugin_rpc,
process_monitor)
self.state_path = conf.haproxy.loadbalancer_state_path
self.state_path = os.path.join(
self.conf.haproxy.loadbalancer_state_path, STATE_PATH_V2_APPEND)
try:
vif_driver_class = runtime.load_class_by_alias_or_classname(
'neutron.interface_drivers',
conf.interface_driver)
except ImportError:
with excutils.save_and_reraise_exception():
msg = (_('Error importing interface driver: %s')
% conf.interface_driver)
LOG.error(msg)
self.vif_driver = vif_driver_class(conf)
self.deployed_loadbalancers = {}
self._loadbalancer = LoadBalancerManager(self)
self._listener = ListenerManager(self)
self._pool = PoolManager(self)
self._member = MemberManager(self)
self._healthmonitor = HealthMonitorManager(self)
def load_firewall_driver_class(driver):
return runtime.load_class_by_alias_or_classname(
'neutron.agent.firewall_drivers', driver)
def test_load_class_by_alias_or_classname_with_classname(
self, mock_log, mock_import):
self.assertEqual(
mock.sentinel.dummy_class,
runtime.load_class_by_alias_or_classname('ns', 'n'))
def test_load_class_by_alias_or_classname_dummy_driver(
self, mock_log, mock_driver):
self.assertEqual(_DummyDriver.driver,
runtime.load_class_by_alias_or_classname('ns', 'n'))
def load_firewall_driver_class(driver):
return runtime.load_class_by_alias_or_classname(
'neutron.agent.firewall_drivers', driver)
