749 lines
33 KiB
Python
749 lines
33 KiB
Python
# Copyright (c) 2013 OpenStack Foundation
|
|
# All Rights Reserved.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
|
|
from oslo_config import cfg
|
|
import stevedore
|
|
|
|
from neutron.api.v2 import attributes
|
|
from neutron.common import exceptions as exc
|
|
from neutron.extensions import multiprovidernet as mpnet
|
|
from neutron.extensions import portbindings
|
|
from neutron.extensions import providernet as provider
|
|
from neutron.i18n import _LE, _LI
|
|
from neutron.openstack.common import log
|
|
from neutron.plugins.ml2.common import exceptions as ml2_exc
|
|
from neutron.plugins.ml2 import db
|
|
from neutron.plugins.ml2 import driver_api as api
|
|
from neutron.plugins.ml2 import models
|
|
|
|
LOG = log.getLogger(__name__)
|
|
|
|
MAX_BINDING_LEVELS = 10
|
|
|
|
|
|
class TypeManager(stevedore.named.NamedExtensionManager):
|
|
"""Manage network segment types using drivers."""
|
|
|
|
def __init__(self):
|
|
# Mapping from type name to DriverManager
|
|
self.drivers = {}
|
|
|
|
LOG.info(_LI("Configured type driver names: %s"),
|
|
cfg.CONF.ml2.type_drivers)
|
|
super(TypeManager, self).__init__('neutron.ml2.type_drivers',
|
|
cfg.CONF.ml2.type_drivers,
|
|
invoke_on_load=True)
|
|
LOG.info(_LI("Loaded type driver names: %s"), self.names())
|
|
self._register_types()
|
|
self._check_tenant_network_types(cfg.CONF.ml2.tenant_network_types)
|
|
|
|
def _register_types(self):
|
|
for ext in self:
|
|
network_type = ext.obj.get_type()
|
|
if network_type in self.drivers:
|
|
LOG.error(_LE("Type driver '%(new_driver)s' ignored because"
|
|
" type driver '%(old_driver)s' is already"
|
|
" registered for type '%(type)s'"),
|
|
{'new_driver': ext.name,
|
|
'old_driver': self.drivers[network_type].name,
|
|
'type': network_type})
|
|
else:
|
|
self.drivers[network_type] = ext
|
|
LOG.info(_LI("Registered types: %s"), self.drivers.keys())
|
|
|
|
def _check_tenant_network_types(self, types):
|
|
self.tenant_network_types = []
|
|
for network_type in types:
|
|
if network_type in self.drivers:
|
|
self.tenant_network_types.append(network_type)
|
|
else:
|
|
LOG.error(_LE("No type driver for tenant network_type: %s. "
|
|
"Service terminated!"), network_type)
|
|
raise SystemExit(1)
|
|
LOG.info(_LI("Tenant network_types: %s"), self.tenant_network_types)
|
|
|
|
def _process_provider_segment(self, segment):
|
|
(network_type, physical_network,
|
|
segmentation_id) = (self._get_attribute(segment, attr)
|
|
for attr in provider.ATTRIBUTES)
|
|
|
|
if attributes.is_attr_set(network_type):
|
|
segment = {api.NETWORK_TYPE: network_type,
|
|
api.PHYSICAL_NETWORK: physical_network,
|
|
api.SEGMENTATION_ID: segmentation_id}
|
|
self.validate_provider_segment(segment)
|
|
return segment
|
|
|
|
msg = _("network_type required")
|
|
raise exc.InvalidInput(error_message=msg)
|
|
|
|
def _process_provider_create(self, network):
|
|
if any(attributes.is_attr_set(network.get(attr))
|
|
for attr in provider.ATTRIBUTES):
|
|
# Verify that multiprovider and provider attributes are not set
|
|
# at the same time.
|
|
if attributes.is_attr_set(network.get(mpnet.SEGMENTS)):
|
|
raise mpnet.SegmentsSetInConjunctionWithProviders()
|
|
return [self._process_provider_segment(network)]
|
|
elif attributes.is_attr_set(network.get(mpnet.SEGMENTS)):
|
|
segments = [self._process_provider_segment(s)
|
|
for s in network[mpnet.SEGMENTS]]
|
|
mpnet.check_duplicate_segments(
|
|
segments,
|
|
self.is_partial_segment)
|
|
return segments
|
|
|
|
def _get_attribute(self, attrs, key):
|
|
value = attrs.get(key)
|
|
if value is attributes.ATTR_NOT_SPECIFIED:
|
|
value = None
|
|
return value
|
|
|
|
def extend_network_dict_provider(self, context, network):
|
|
id = network['id']
|
|
segments = db.get_network_segments(context.session, id)
|
|
if not segments:
|
|
LOG.error(_LE("Network %s has no segments"), id)
|
|
for attr in provider.ATTRIBUTES:
|
|
network[attr] = None
|
|
elif len(segments) > 1:
|
|
network[mpnet.SEGMENTS] = [
|
|
{provider.NETWORK_TYPE: segment[api.NETWORK_TYPE],
|
|
provider.PHYSICAL_NETWORK: segment[api.PHYSICAL_NETWORK],
|
|
provider.SEGMENTATION_ID: segment[api.SEGMENTATION_ID]}
|
|
for segment in segments]
|
|
else:
|
|
segment = segments[0]
|
|
network[provider.NETWORK_TYPE] = segment[api.NETWORK_TYPE]
|
|
network[provider.PHYSICAL_NETWORK] = segment[api.PHYSICAL_NETWORK]
|
|
network[provider.SEGMENTATION_ID] = segment[api.SEGMENTATION_ID]
|
|
|
|
def initialize(self):
|
|
for network_type, driver in self.drivers.iteritems():
|
|
LOG.info(_LI("Initializing driver for type '%s'"), network_type)
|
|
driver.obj.initialize()
|
|
|
|
def create_network_segments(self, context, network, tenant_id):
|
|
"""Call type drivers to create network segments."""
|
|
segments = self._process_provider_create(network)
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
network_id = network['id']
|
|
if segments:
|
|
for segment_index, segment in enumerate(segments):
|
|
segment = self.reserve_provider_segment(
|
|
session, segment)
|
|
db.add_network_segment(session, network_id,
|
|
segment, segment_index)
|
|
else:
|
|
segment = self.allocate_tenant_segment(session)
|
|
db.add_network_segment(session, network_id, segment)
|
|
|
|
def is_partial_segment(self, segment):
|
|
network_type = segment[api.NETWORK_TYPE]
|
|
driver = self.drivers.get(network_type)
|
|
if driver:
|
|
return driver.obj.is_partial_segment(segment)
|
|
else:
|
|
msg = _("network_type value '%s' not supported") % network_type
|
|
raise exc.InvalidInput(error_message=msg)
|
|
|
|
def validate_provider_segment(self, segment):
|
|
network_type = segment[api.NETWORK_TYPE]
|
|
driver = self.drivers.get(network_type)
|
|
if driver:
|
|
driver.obj.validate_provider_segment(segment)
|
|
else:
|
|
msg = _("network_type value '%s' not supported") % network_type
|
|
raise exc.InvalidInput(error_message=msg)
|
|
|
|
def reserve_provider_segment(self, session, segment):
|
|
network_type = segment.get(api.NETWORK_TYPE)
|
|
driver = self.drivers.get(network_type)
|
|
return driver.obj.reserve_provider_segment(session, segment)
|
|
|
|
def allocate_tenant_segment(self, session):
|
|
for network_type in self.tenant_network_types:
|
|
driver = self.drivers.get(network_type)
|
|
segment = driver.obj.allocate_tenant_segment(session)
|
|
if segment:
|
|
return segment
|
|
raise exc.NoNetworkAvailable()
|
|
|
|
def release_network_segments(self, session, network_id):
|
|
segments = db.get_network_segments(session, network_id,
|
|
filter_dynamic=None)
|
|
|
|
for segment in segments:
|
|
network_type = segment.get(api.NETWORK_TYPE)
|
|
driver = self.drivers.get(network_type)
|
|
if driver:
|
|
driver.obj.release_segment(session, segment)
|
|
else:
|
|
LOG.error(_LE("Failed to release segment '%s' because "
|
|
"network type is not supported."), segment)
|
|
|
|
def allocate_dynamic_segment(self, session, network_id, segment):
|
|
"""Allocate a dynamic segment using a partial or full segment dict."""
|
|
dynamic_segment = db.get_dynamic_segment(
|
|
session, network_id, segment.get(api.PHYSICAL_NETWORK),
|
|
segment.get(api.SEGMENTATION_ID))
|
|
|
|
if dynamic_segment:
|
|
return dynamic_segment
|
|
|
|
driver = self.drivers.get(segment.get(api.NETWORK_TYPE))
|
|
dynamic_segment = driver.obj.reserve_provider_segment(session, segment)
|
|
db.add_network_segment(session, network_id, dynamic_segment,
|
|
is_dynamic=True)
|
|
return dynamic_segment
|
|
|
|
def release_dynamic_segment(self, session, segment_id):
|
|
"""Delete a dynamic segment."""
|
|
segment = db.get_segment_by_id(session, segment_id)
|
|
if segment:
|
|
driver = self.drivers.get(segment.get(api.NETWORK_TYPE))
|
|
if driver:
|
|
driver.obj.release_segment(session, segment)
|
|
db.delete_network_segment(session, segment_id)
|
|
else:
|
|
LOG.error(_LE("Failed to release segment '%s' because "
|
|
"network type is not supported."), segment)
|
|
else:
|
|
LOG.debug("No segment found with id %(segment_id)s", segment_id)
|
|
|
|
|
|
class MechanismManager(stevedore.named.NamedExtensionManager):
|
|
"""Manage networking mechanisms using drivers."""
|
|
|
|
def __init__(self):
|
|
# Registered mechanism drivers, keyed by name.
|
|
self.mech_drivers = {}
|
|
# Ordered list of mechanism drivers, defining
|
|
# the order in which the drivers are called.
|
|
self.ordered_mech_drivers = []
|
|
|
|
LOG.info(_LI("Configured mechanism driver names: %s"),
|
|
cfg.CONF.ml2.mechanism_drivers)
|
|
super(MechanismManager, self).__init__('neutron.ml2.mechanism_drivers',
|
|
cfg.CONF.ml2.mechanism_drivers,
|
|
invoke_on_load=True,
|
|
name_order=True)
|
|
LOG.info(_LI("Loaded mechanism driver names: %s"), self.names())
|
|
self._register_mechanisms()
|
|
|
|
def _register_mechanisms(self):
|
|
"""Register all mechanism drivers.
|
|
|
|
This method should only be called once in the MechanismManager
|
|
constructor.
|
|
"""
|
|
for ext in self:
|
|
self.mech_drivers[ext.name] = ext
|
|
self.ordered_mech_drivers.append(ext)
|
|
LOG.info(_LI("Registered mechanism drivers: %s"),
|
|
[driver.name for driver in self.ordered_mech_drivers])
|
|
|
|
def initialize(self):
|
|
for driver in self.ordered_mech_drivers:
|
|
LOG.info(_LI("Initializing mechanism driver '%s'"), driver.name)
|
|
driver.obj.initialize()
|
|
|
|
def _call_on_drivers(self, method_name, context,
|
|
continue_on_failure=False):
|
|
"""Helper method for calling a method across all mechanism drivers.
|
|
|
|
:param method_name: name of the method to call
|
|
:param context: context parameter to pass to each method call
|
|
:param continue_on_failure: whether or not to continue to call
|
|
all mechanism drivers once one has raised an exception
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver call fails.
|
|
"""
|
|
error = False
|
|
for driver in self.ordered_mech_drivers:
|
|
try:
|
|
getattr(driver.obj, method_name)(context)
|
|
except Exception:
|
|
LOG.exception(
|
|
_LE("Mechanism driver '%(name)s' failed in %(method)s"),
|
|
{'name': driver.name, 'method': method_name}
|
|
)
|
|
error = True
|
|
if not continue_on_failure:
|
|
break
|
|
if error:
|
|
raise ml2_exc.MechanismDriverError(
|
|
method=method_name
|
|
)
|
|
|
|
def create_network_precommit(self, context):
|
|
"""Notify all mechanism drivers during network creation.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver create_network_precommit call fails.
|
|
|
|
Called within the database transaction. If a mechanism driver
|
|
raises an exception, then a MechanismDriverError is propogated
|
|
to the caller, triggering a rollback. There is no guarantee
|
|
that all mechanism drivers are called in this case.
|
|
"""
|
|
self._call_on_drivers("create_network_precommit", context)
|
|
|
|
def create_network_postcommit(self, context):
|
|
"""Notify all mechanism drivers after network creation.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver create_network_postcommit call fails.
|
|
|
|
Called after the database transaction. If a mechanism driver
|
|
raises an exception, then a MechanismDriverError is propagated
|
|
to the caller, where the network will be deleted, triggering
|
|
any required cleanup. There is no guarantee that all mechanism
|
|
drivers are called in this case.
|
|
"""
|
|
self._call_on_drivers("create_network_postcommit", context)
|
|
|
|
def update_network_precommit(self, context):
|
|
"""Notify all mechanism drivers during network update.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver update_network_precommit call fails.
|
|
|
|
Called within the database transaction. If a mechanism driver
|
|
raises an exception, then a MechanismDriverError is propogated
|
|
to the caller, triggering a rollback. There is no guarantee
|
|
that all mechanism drivers are called in this case.
|
|
"""
|
|
self._call_on_drivers("update_network_precommit", context)
|
|
|
|
def update_network_postcommit(self, context):
|
|
"""Notify all mechanism drivers after network update.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver update_network_postcommit call fails.
|
|
|
|
Called after the database transaction. If any mechanism driver
|
|
raises an error, then the error is logged but we continue to
|
|
call every other mechanism driver. A MechanismDriverError is
|
|
then reraised at the end to notify the caller of a failure.
|
|
"""
|
|
self._call_on_drivers("update_network_postcommit", context,
|
|
continue_on_failure=True)
|
|
|
|
def delete_network_precommit(self, context):
|
|
"""Notify all mechanism drivers during network deletion.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver delete_network_precommit call fails.
|
|
|
|
Called within the database transaction. If a mechanism driver
|
|
raises an exception, then a MechanismDriverError is propogated
|
|
to the caller, triggering a rollback. There is no guarantee
|
|
that all mechanism drivers are called in this case.
|
|
"""
|
|
self._call_on_drivers("delete_network_precommit", context)
|
|
|
|
def delete_network_postcommit(self, context):
|
|
"""Notify all mechanism drivers after network deletion.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver delete_network_postcommit call fails.
|
|
|
|
Called after the database transaction. If any mechanism driver
|
|
raises an error, then the error is logged but we continue to
|
|
call every other mechanism driver. A MechanismDriverError is
|
|
then reraised at the end to notify the caller of a failure. In
|
|
general we expect the caller to ignore the error, as the
|
|
network resource has already been deleted from the database
|
|
and it doesn't make sense to undo the action by recreating the
|
|
network.
|
|
"""
|
|
self._call_on_drivers("delete_network_postcommit", context,
|
|
continue_on_failure=True)
|
|
|
|
def create_subnet_precommit(self, context):
|
|
"""Notify all mechanism drivers during subnet creation.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver create_subnet_precommit call fails.
|
|
|
|
Called within the database transaction. If a mechanism driver
|
|
raises an exception, then a MechanismDriverError is propogated
|
|
to the caller, triggering a rollback. There is no guarantee
|
|
that all mechanism drivers are called in this case.
|
|
"""
|
|
self._call_on_drivers("create_subnet_precommit", context)
|
|
|
|
def create_subnet_postcommit(self, context):
|
|
"""Notify all mechanism drivers after subnet creation.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver create_subnet_postcommit call fails.
|
|
|
|
Called after the database transaction. If a mechanism driver
|
|
raises an exception, then a MechanismDriverError is propagated
|
|
to the caller, where the subnet will be deleted, triggering
|
|
any required cleanup. There is no guarantee that all mechanism
|
|
drivers are called in this case.
|
|
"""
|
|
self._call_on_drivers("create_subnet_postcommit", context)
|
|
|
|
def update_subnet_precommit(self, context):
|
|
"""Notify all mechanism drivers during subnet update.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver update_subnet_precommit call fails.
|
|
|
|
Called within the database transaction. If a mechanism driver
|
|
raises an exception, then a MechanismDriverError is propogated
|
|
to the caller, triggering a rollback. There is no guarantee
|
|
that all mechanism drivers are called in this case.
|
|
"""
|
|
self._call_on_drivers("update_subnet_precommit", context)
|
|
|
|
def update_subnet_postcommit(self, context):
|
|
"""Notify all mechanism drivers after subnet update.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver update_subnet_postcommit call fails.
|
|
|
|
Called after the database transaction. If any mechanism driver
|
|
raises an error, then the error is logged but we continue to
|
|
call every other mechanism driver. A MechanismDriverError is
|
|
then reraised at the end to notify the caller of a failure.
|
|
"""
|
|
self._call_on_drivers("update_subnet_postcommit", context,
|
|
continue_on_failure=True)
|
|
|
|
def delete_subnet_precommit(self, context):
|
|
"""Notify all mechanism drivers during subnet deletion.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver delete_subnet_precommit call fails.
|
|
|
|
Called within the database transaction. If a mechanism driver
|
|
raises an exception, then a MechanismDriverError is propogated
|
|
to the caller, triggering a rollback. There is no guarantee
|
|
that all mechanism drivers are called in this case.
|
|
"""
|
|
self._call_on_drivers("delete_subnet_precommit", context)
|
|
|
|
def delete_subnet_postcommit(self, context):
|
|
"""Notify all mechanism drivers after subnet deletion.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver delete_subnet_postcommit call fails.
|
|
|
|
Called after the database transaction. If any mechanism driver
|
|
raises an error, then the error is logged but we continue to
|
|
call every other mechanism driver. A MechanismDriverError is
|
|
then reraised at the end to notify the caller of a failure. In
|
|
general we expect the caller to ignore the error, as the
|
|
subnet resource has already been deleted from the database
|
|
and it doesn't make sense to undo the action by recreating the
|
|
subnet.
|
|
"""
|
|
self._call_on_drivers("delete_subnet_postcommit", context,
|
|
continue_on_failure=True)
|
|
|
|
def create_port_precommit(self, context):
|
|
"""Notify all mechanism drivers during port creation.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver create_port_precommit call fails.
|
|
|
|
Called within the database transaction. If a mechanism driver
|
|
raises an exception, then a MechanismDriverError is propogated
|
|
to the caller, triggering a rollback. There is no guarantee
|
|
that all mechanism drivers are called in this case.
|
|
"""
|
|
self._call_on_drivers("create_port_precommit", context)
|
|
|
|
def create_port_postcommit(self, context):
|
|
"""Notify all mechanism drivers of port creation.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver create_port_postcommit call fails.
|
|
|
|
Called after the database transaction. Errors raised by
|
|
mechanism drivers are left to propagate to the caller, where
|
|
the port will be deleted, triggering any required
|
|
cleanup. There is no guarantee that all mechanism drivers are
|
|
called in this case.
|
|
"""
|
|
self._call_on_drivers("create_port_postcommit", context)
|
|
|
|
def update_port_precommit(self, context):
|
|
"""Notify all mechanism drivers during port update.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver update_port_precommit call fails.
|
|
|
|
Called within the database transaction. If a mechanism driver
|
|
raises an exception, then a MechanismDriverError is propogated
|
|
to the caller, triggering a rollback. There is no guarantee
|
|
that all mechanism drivers are called in this case.
|
|
"""
|
|
self._call_on_drivers("update_port_precommit", context)
|
|
|
|
def update_port_postcommit(self, context):
|
|
"""Notify all mechanism drivers after port update.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver update_port_postcommit call fails.
|
|
|
|
Called after the database transaction. If any mechanism driver
|
|
raises an error, then the error is logged but we continue to
|
|
call every other mechanism driver. A MechanismDriverError is
|
|
then reraised at the end to notify the caller of a failure.
|
|
"""
|
|
self._call_on_drivers("update_port_postcommit", context,
|
|
continue_on_failure=True)
|
|
|
|
def delete_port_precommit(self, context):
|
|
"""Notify all mechanism drivers during port deletion.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver delete_port_precommit call fails.
|
|
|
|
Called within the database transaction. If a mechanism driver
|
|
raises an exception, then a MechanismDriverError is propogated
|
|
to the caller, triggering a rollback. There is no guarantee
|
|
that all mechanism drivers are called in this case.
|
|
"""
|
|
self._call_on_drivers("delete_port_precommit", context)
|
|
|
|
def delete_port_postcommit(self, context):
|
|
"""Notify all mechanism drivers after port deletion.
|
|
|
|
:raises: neutron.plugins.ml2.common.MechanismDriverError
|
|
if any mechanism driver delete_port_postcommit call fails.
|
|
|
|
Called after the database transaction. If any mechanism driver
|
|
raises an error, then the error is logged but we continue to
|
|
call every other mechanism driver. A MechanismDriverError is
|
|
then reraised at the end to notify the caller of a failure. In
|
|
general we expect the caller to ignore the error, as the
|
|
port resource has already been deleted from the database
|
|
and it doesn't make sense to undo the action by recreating the
|
|
port.
|
|
"""
|
|
self._call_on_drivers("delete_port_postcommit", context,
|
|
continue_on_failure=True)
|
|
|
|
def bind_port(self, context):
|
|
"""Attempt to bind a port using registered mechanism drivers.
|
|
|
|
:param context: PortContext instance describing the port
|
|
|
|
Called outside any transaction to attempt to establish a port
|
|
binding.
|
|
"""
|
|
binding = context._binding
|
|
LOG.debug("Attempting to bind port %(port)s on host %(host)s "
|
|
"for vnic_type %(vnic_type)s with profile %(profile)s",
|
|
{'port': context.current['id'],
|
|
'host': context.host,
|
|
'vnic_type': binding.vnic_type,
|
|
'profile': binding.profile})
|
|
context._clear_binding_levels()
|
|
if not self._bind_port_level(context, 0,
|
|
context.network.network_segments):
|
|
binding.vif_type = portbindings.VIF_TYPE_BINDING_FAILED
|
|
LOG.error(_LE("Failed to bind port %(port)s on host %(host)s"),
|
|
{'port': context.current['id'],
|
|
'host': context.host})
|
|
|
|
def _bind_port_level(self, context, level, segments_to_bind):
|
|
binding = context._binding
|
|
port_id = context._port['id']
|
|
LOG.debug("Attempting to bind port %(port)s on host %(host)s "
|
|
"at level %(level)s using segments %(segments)s",
|
|
{'port': port_id,
|
|
'host': context.host,
|
|
'level': level,
|
|
'segments': segments_to_bind})
|
|
|
|
if level == MAX_BINDING_LEVELS:
|
|
LOG.error(_LE("Exceeded maximum binding levels attempting to bind "
|
|
"port %(port)s on host %(host)s"),
|
|
{'port': context.current['id'],
|
|
'host': context.host})
|
|
return False
|
|
|
|
for driver in self.ordered_mech_drivers:
|
|
if not self._check_driver_to_bind(driver, segments_to_bind,
|
|
context._binding_levels):
|
|
continue
|
|
try:
|
|
context._prepare_to_bind(segments_to_bind)
|
|
driver.obj.bind_port(context)
|
|
segment = context._new_bound_segment
|
|
if segment:
|
|
context._push_binding_level(
|
|
models.PortBindingLevel(port_id=port_id,
|
|
host=context.host,
|
|
level=level,
|
|
driver=driver.name,
|
|
segment_id=segment))
|
|
next_segments = context._next_segments_to_bind
|
|
if next_segments:
|
|
# Continue binding another level.
|
|
if self._bind_port_level(context, level + 1,
|
|
next_segments):
|
|
return True
|
|
else:
|
|
context._pop_binding_level()
|
|
else:
|
|
# Binding complete.
|
|
LOG.debug("Bound port: %(port)s, "
|
|
"host: %(host)s, "
|
|
"vif_type: %(vif_type)s, "
|
|
"vif_details: %(vif_details)s, "
|
|
"binding_levels: %(binding_levels)s",
|
|
{'port': port_id,
|
|
'host': context.host,
|
|
'vif_type': binding.vif_type,
|
|
'vif_details': binding.vif_details,
|
|
'binding_levels': context.binding_levels})
|
|
return True
|
|
except Exception:
|
|
LOG.exception(_LE("Mechanism driver %s failed in "
|
|
"bind_port"),
|
|
driver.name)
|
|
binding.vif_type = portbindings.VIF_TYPE_BINDING_FAILED
|
|
LOG.error(_LE("Failed to bind port %(port)s on host %(host)s"),
|
|
{'port': context._port['id'],
|
|
'host': binding.host})
|
|
|
|
def _check_driver_to_bind(self, driver, segments_to_bind, binding_levels):
|
|
# To prevent a possible binding loop, don't try to bind with
|
|
# this driver if the same driver has already bound at a higher
|
|
# level to one of the segments we are currently trying to
|
|
# bind. Note that is is OK for the same driver to bind at
|
|
# multiple levels using different segments.
|
|
for level in binding_levels:
|
|
if (level.driver == driver and
|
|
level.segment_id in segments_to_bind):
|
|
return False
|
|
return True
|
|
|
|
|
|
class ExtensionManager(stevedore.named.NamedExtensionManager):
|
|
"""Manage extension drivers using drivers."""
|
|
|
|
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"),
|
|
cfg.CONF.ml2.extension_drivers)
|
|
super(ExtensionManager, self).__init__('neutron.ml2.extension_drivers',
|
|
cfg.CONF.ml2.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 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 extension_aliases(self):
|
|
exts = []
|
|
for driver in self.ordered_ext_drivers:
|
|
alias = driver.obj.extension_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:
|
|
LOG.exception(
|
|
_LE("Extension driver '%(name)s' failed in %(method)s"),
|
|
{'name': driver.name, 'method': method_name}
|
|
)
|
|
|
|
def process_create_network(self, plugin_context, data, result):
|
|
"""Notify all extension drivers during network creation."""
|
|
self._call_on_ext_drivers("process_create_network", plugin_context,
|
|
data, result)
|
|
|
|
def process_update_network(self, plugin_context, data, result):
|
|
"""Notify all extension drivers during network update."""
|
|
self._call_on_ext_drivers("process_update_network", plugin_context,
|
|
data, result)
|
|
|
|
def process_create_subnet(self, plugin_context, data, result):
|
|
"""Notify all extension drivers during subnet creation."""
|
|
self._call_on_ext_drivers("process_create_subnet", plugin_context,
|
|
data, result)
|
|
|
|
def process_update_subnet(self, plugin_context, data, result):
|
|
"""Notify all extension drivers during subnet update."""
|
|
self._call_on_ext_drivers("process_update_subnet", plugin_context,
|
|
data, result)
|
|
|
|
def process_create_port(self, plugin_context, data, result):
|
|
"""Notify all extension drivers during port creation."""
|
|
self._call_on_ext_drivers("process_create_port", plugin_context,
|
|
data, result)
|
|
|
|
def process_update_port(self, plugin_context, data, result):
|
|
"""Notify all extension drivers during port update."""
|
|
self._call_on_ext_drivers("process_update_port", plugin_context,
|
|
data, result)
|
|
|
|
def extend_network_dict(self, session, base_model, result):
|
|
"""Notify all extension drivers to extend network dictionary."""
|
|
for driver in self.ordered_ext_drivers:
|
|
driver.obj.extend_network_dict(session, base_model, result)
|
|
LOG.info(_LI("Extended network dict for driver '%(drv)s'"),
|
|
{'drv': driver.name})
|
|
|
|
def extend_subnet_dict(self, session, base_model, result):
|
|
"""Notify all extension drivers to extend subnet dictionary."""
|
|
for driver in self.ordered_ext_drivers:
|
|
driver.obj.extend_subnet_dict(session, base_model, result)
|
|
LOG.info(_LI("Extended subnet dict for driver '%(drv)s'"),
|
|
{'drv': driver.name})
|
|
|
|
def extend_port_dict(self, session, base_model, result):
|
|
"""Notify all extension drivers to extend port dictionary."""
|
|
for driver in self.ordered_ext_drivers:
|
|
driver.obj.extend_port_dict(session, base_model, result)
|
|
LOG.info(_LI("Extended port dict for driver '%(drv)s'"),
|
|
{'drv': driver.name})
|