141 lines
4.3 KiB
Python
141 lines
4.3 KiB
Python
#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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import abc
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from oslo_utils import timeutils
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from neutron.common.ovn import constants as ovn_const
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from neutron.common.ovn import utils as ovn_utils
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class NeutronAgent(abc.ABC):
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types = {}
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def __init_subclass__(cls):
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# Register the subclasses to be looked up by their type
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NeutronAgent.types[cls.agent_type] = cls
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def __init__(self, chassis_private):
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self.chassis_private = chassis_private
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self.chassis = self.get_chassis(chassis_private)
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@staticmethod
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def get_chassis(chassis_private):
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try:
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return chassis_private.chassis[0]
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except (AttributeError, IndexError):
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# No Chassis_Private support, just use Chassis
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return chassis_private
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@property
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def updated_at(self):
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try:
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return timeutils.parse_isotime(self.chassis.external_ids[self.key])
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except KeyError:
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return timeutils.utcnow(with_timezone=True)
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def as_dict(self, alive):
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return {
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'binary': self.binary,
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'host': self.chassis.hostname,
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'heartbeat_timestamp': timeutils.utcnow(),
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'availability_zone': ', '.join(
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ovn_utils.get_chassis_availability_zones(self.chassis)),
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'topic': 'n/a',
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'description': self.description,
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'configurations': {
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'chassis_name': self.chassis.name,
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'bridge-mappings':
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self.chassis.external_ids.get('ovn-bridge-mappings', '')},
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'start_flag': True,
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'agent_type': self.agent_type,
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'id': self.agent_id,
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'alive': alive,
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'admin_state_up': True}
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@classmethod
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def from_type(cls, _type, chassis_private):
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return cls.types[_type](chassis_private)
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@staticmethod
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def matches_chassis(chassis):
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"""Is this Agent type found on the passed in chassis?"""
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return True
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@classmethod
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def agents_from_chassis(cls, chassis_private):
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return [AgentCls(chassis_private)
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for AgentCls in cls.types.values()
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if AgentCls.matches_chassis(cls.get_chassis(chassis_private))]
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@property
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@abc.abstractmethod
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def agent_type(self):
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pass
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class ControllerAgent(NeutronAgent):
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agent_type = ovn_const.OVN_CONTROLLER_AGENT
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binary = 'ovn-controller'
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key = ovn_const.OVN_LIVENESS_CHECK_EXT_ID_KEY
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@staticmethod
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def matches_chassis(chassis):
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return ('enable-chassis-as-gw' not in
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chassis.external_ids.get('ovn-cms-options', []))
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@property
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def nb_cfg(self):
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return self.chassis_private.nb_cfg
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@property
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def agent_id(self):
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return self.chassis_private.name
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@property
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def description(self):
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return self.chassis_private.external_ids.get(
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ovn_const.OVN_AGENT_DESC_KEY, '')
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class ControllerGatewayAgent(ControllerAgent):
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agent_type = ovn_const.OVN_CONTROLLER_GW_AGENT
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@staticmethod
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def matches_chassis(chassis):
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return ('enable-chassis-as-gw' in
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chassis.external_ids.get('ovn-cms-options', []))
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class MetadataAgent(NeutronAgent):
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agent_type = ovn_const.OVN_METADATA_AGENT
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binary = 'neutron-ovn-metadata-agent'
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key = ovn_const.METADATA_LIVENESS_CHECK_EXT_ID_KEY
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@property
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def nb_cfg(self):
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return int(self.chassis_private.external_ids.get(
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ovn_const.OVN_AGENT_METADATA_SB_CFG_KEY, 0))
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@property
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def agent_id(self):
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return self.chassis_private.external_ids.get(
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ovn_const.OVN_AGENT_METADATA_ID_KEY)
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@property
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def description(self):
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return self.chassis_private.external_ids.get(
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ovn_const.OVN_AGENT_METADATA_DESC_KEY, '')
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