254 lines
12 KiB
Python
254 lines
12 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from neutron.openstack.common import log
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from oslo.config import cfg
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import stevedore
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LOG = log.getLogger(__name__)
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class ExtensionManager(stevedore.named.NamedExtensionManager):
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"""Manage extension drivers using drivers."""
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def __init__(self):
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# Ordered list of extension drivers, defining
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# the order in which the drivers are called.
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self.ordered_ext_drivers = []
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LOG.info(_("Configured extension driver names: %s"),
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cfg.CONF.group_policy.extension_drivers)
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super(ExtensionManager, self).__init__(
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'gbpservice.neutron.group_policy.extension_drivers',
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cfg.CONF.group_policy.extension_drivers,
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invoke_on_load=True,
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name_order=True)
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LOG.info(_("Loaded extension driver names: %s"), self.names())
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self._register_drivers()
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def _register_drivers(self):
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"""Register all extension drivers.
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This method should only be called once in the ExtensionManager
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constructor.
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"""
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for ext in self:
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self.ordered_ext_drivers.append(ext)
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LOG.info(_("Registered extension drivers: %s"),
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[driver.name for driver in self.ordered_ext_drivers])
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def initialize(self):
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# Initialize each driver in the list.
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for driver in self.ordered_ext_drivers:
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LOG.info(_("Initializing extension driver '%s'"), driver.name)
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driver.obj.initialize()
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def extension_aliases(self):
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exts = []
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for driver in self.ordered_ext_drivers:
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alias = driver.obj.extension_alias
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exts.append(alias)
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LOG.info(_("Got %(alias)s extension from driver '%(drv)s'"),
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{'alias': alias, 'drv': driver.name})
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return exts
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def _call_on_ext_drivers(self, method_name, session, data, result):
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"""Helper method for calling a method across all extension drivers."""
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for driver in self.ordered_ext_drivers:
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try:
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getattr(driver.obj, method_name)(session, data, result)
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except Exception:
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LOG.exception(
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_("Extension driver '%(name)s' failed in %(method)s"),
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{'name': driver.name, 'method': method_name}
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)
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def process_create_policy_target(self, session, data, result):
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"""Call all extension drivers during PT creation."""
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self._call_on_ext_drivers("process_create_policy_target",
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session, data, result)
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def process_update_policy_target(self, session, data, result):
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"""Call all extension drivers during PT update."""
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self._call_on_ext_drivers("process_update_policy_target",
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session, data, result)
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def extend_policy_target_dict(self, session, result):
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"""Call all extension drivers to extend PT dictionary."""
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for driver in self.ordered_ext_drivers:
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driver.obj.extend_policy_target_dict(session, result)
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def process_create_policy_target_group(self, session, data, result):
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"""Call all extension drivers during PTG creation."""
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self._call_on_ext_drivers("process_create_policy_target_group",
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session, data, result)
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def process_update_policy_target_group(self, session, data, result):
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"""Call all extension drivers during PTG update."""
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self._call_on_ext_drivers("process_update_policy_target_group",
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session, data, result)
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def extend_policy_target_group_dict(self, session, result):
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"""Call all extension drivers to extend PTG dictionary."""
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for driver in self.ordered_ext_drivers:
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driver.obj.extend_policy_target_group_dict(session, result)
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def process_create_l2_policy(self, session, data, result):
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"""Call all extension drivers during L2P creation."""
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self._call_on_ext_drivers("process_create_l2_policy",
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session, data, result)
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def process_update_l2_policy(self, session, data, result):
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"""Call all extension drivers during L2P update."""
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self._call_on_ext_drivers("process_update_l2_policy",
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session, data, result)
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def extend_l2_policy_dict(self, session, result):
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"""Call all extension drivers to extend L2P dictionary."""
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for driver in self.ordered_ext_drivers:
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driver.obj.extend_l2_policy_dict(session, result)
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def process_create_l3_policy(self, session, data, result):
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"""Call all extension drivers during L3P creation."""
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self._call_on_ext_drivers("process_create_l3_policy",
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session, data, result)
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def process_update_l3_policy(self, session, data, result):
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"""Call all extension drivers during L3P update."""
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self._call_on_ext_drivers("process_update_l3_policy",
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session, data, result)
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def extend_l3_policy_dict(self, session, result):
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"""Call all extension drivers to extend L3P dictionary."""
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for driver in self.ordered_ext_drivers:
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driver.obj.extend_l3_policy_dict(session, result)
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def process_create_policy_classifier(self, session, data, result):
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"""Call all extension drivers during PC creation."""
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self._call_on_ext_drivers("process_create_policy_classifier",
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session, data, result)
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def process_update_policy_classifier(self, session, data, result):
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"""Call all extension drivers during PC update."""
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self._call_on_ext_drivers("process_update_policy_classifier",
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session, data, result)
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def extend_policy_classifier_dict(self, session, result):
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"""Call all extension drivers to extend PC dictionary."""
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for driver in self.ordered_ext_drivers:
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driver.obj.extend_policy_classifier_dict(session, result)
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def process_create_policy_action(self, session, data, result):
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"""Call all extension drivers during PA creation."""
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self._call_on_ext_drivers("process_create_policy_action",
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session, data, result)
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def process_update_policy_action(self, session, data, result):
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"""Call all extension drivers during PA update."""
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self._call_on_ext_drivers("process_update_policy_action",
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session, data, result)
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def extend_policy_action_dict(self, session, result):
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"""Call all extension drivers to extend PA dictionary."""
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for driver in self.ordered_ext_drivers:
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driver.obj.extend_policy_action_dict(session, result)
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def process_create_policy_rule(self, session, data, result):
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"""Call all extension drivers during PR creation."""
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self._call_on_ext_drivers("process_create_policy_rule",
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session, data, result)
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def process_update_policy_rule(self, session, data, result):
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"""Call all extension drivers during PR update."""
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self._call_on_ext_drivers("process_update_policy_rule",
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session, data, result)
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def extend_policy_rule_dict(self, session, result):
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"""Call all extension drivers to extend PR dictionary."""
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for driver in self.ordered_ext_drivers:
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driver.obj.extend_policy_rule_dict(session, result)
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def process_create_policy_rule_set(self, session, data, result):
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"""Call all extension drivers during PRS creation."""
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self._call_on_ext_drivers("process_create_policy_rule_set",
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session, data, result)
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def process_update_policy_rule_set(self, session, data, result):
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"""Call all extension drivers during PRS update."""
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self._call_on_ext_drivers("process_update_policy_rule_set",
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session, data, result)
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def extend_policy_rule_set_dict(self, session, result):
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"""Call all extension drivers to extend PRS dictionary."""
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for driver in self.ordered_ext_drivers:
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driver.obj.extend_policy_rule_set_dict(session, result)
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def process_create_network_service_policy(self, session, data, result):
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"""Call all extension drivers during NSP creation."""
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self._call_on_ext_drivers("process_create_network_service_policy",
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session, data, result)
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def process_update_network_service_policy(self, session, data, result):
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"""Call all extension drivers during NSP update."""
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self._call_on_ext_drivers("process_update_network_service_policy",
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session, data, result)
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def extend_network_service_policy_dict(self, session, result):
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"""Call all extension drivers to extend NSP dictionary."""
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for driver in self.ordered_ext_drivers:
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driver.obj.extend_network_service_policy_dict(session, result)
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def process_create_external_segment(self, session, data, result):
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"""Call all extension drivers during EP creation."""
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self._call_on_ext_drivers("process_create_external_segment",
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session, data, result)
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def process_update_external_segment(self, session, data, result):
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"""Call all extension drivers during EP update."""
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self._call_on_ext_drivers("process_update_external_segment",
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session, data, result)
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def extend_external_segment_dict(self, session, result):
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"""Call all extension drivers to extend EP dictionary."""
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for driver in self.ordered_ext_drivers:
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driver.obj.extend_external_segment_dict(session, result)
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def process_create_external_policy(self, session, data, result):
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"""Call all extension drivers during EP creation."""
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self._call_on_ext_drivers("process_create_external_policy",
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session, data, result)
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def process_update_external_policy(self, session, data, result):
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"""Call all extension drivers during EP update."""
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self._call_on_ext_drivers("process_update_external_policy",
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session, data, result)
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def extend_external_policy_dict(self, session, result):
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"""Call all extension drivers to extend EP dictionary."""
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for driver in self.ordered_ext_drivers:
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driver.obj.extend_external_policy_dict(session, result)
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def process_create_nat_pool(self, session, data, result):
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"""Call all extension drivers during NP creation."""
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self._call_on_ext_drivers("process_create_nat_pool",
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session, data, result)
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def process_update_nat_pool(self, session, data, result):
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"""Call all extension drivers during NP update."""
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self._call_on_ext_drivers("process_update_nat_pool",
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session, data, result)
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def extend_nat_pool_dict(self, session, result):
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"""Call all extension drivers to extend NP dictionary."""
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for driver in self.ordered_ext_drivers:
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driver.obj.extend_nat_pool_dict(session, result) |