251 lines
8.9 KiB
Python
251 lines
8.9 KiB
Python
# Copyright 2021 Red Hat, Inc.
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#
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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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from keystoneauth1 import exceptions as ks_exc
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from neutron_lib.placement import constants as placement_constants
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from neutron_lib.placement import utils as placement_utils
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from neutron_lib.plugins import constants as plugins_constants
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from neutron_lib.plugins import directory
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from neutron_lib.utils import helpers
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from oslo_log import log as logging
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from ovsdbapp.backend.ovs_idl import event as row_event
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from neutron.agent.common import placement_report
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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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from neutron.common import utils as common_utils
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LOG = logging.getLogger(__name__)
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def _parse_ovn_cms_options(chassis):
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cms_options = ovn_utils.get_ovn_cms_options(chassis)
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return {ovn_const.RP_BANDWIDTHS: _parse_bandwidths(cms_options),
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ovn_const.RP_INVENTORY_DEFAULTS: _parse_inventory_defaults(
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cms_options),
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ovn_const.RP_HYPERVISORS: _parse_hypervisors(cms_options)}
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def _parse_bridge_mappings(chassis):
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bridge_mappings = chassis.external_ids.get('ovn-bridge-mappings', '')
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bridge_mappings = helpers.parse_mappings(bridge_mappings.split(','),
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unique_values=False)
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return {k: [v] for k, v in bridge_mappings.items()}
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def _parse_bandwidths(cms_options):
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for cms_option in cms_options:
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if ovn_const.RP_BANDWIDTHS in cms_option:
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bw_values = cms_option.split('=')[1]
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break
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else:
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return
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if bw_values:
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return placement_utils.parse_rp_bandwidths(bw_values.split(';'))
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def _parse_inventory_defaults(cms_options):
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for cms_option in cms_options:
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if ovn_const.RP_INVENTORY_DEFAULTS in cms_option:
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inv_defaults = cms_option.split('=')[1]
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break
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else:
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return
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if not inv_defaults:
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return
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inventory = {}
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for inv_default in inv_defaults.split(';'):
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for key in placement_constants.INVENTORY_OPTIONS:
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if key in inv_default:
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inventory[key] = inv_default.split(':')[1]
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return placement_utils.parse_rp_inventory_defaults(inventory)
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def _parse_hypervisors(cms_options):
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for cms_option in cms_options:
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if ovn_const.RP_HYPERVISORS in cms_option:
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hypervisors = cms_option.split('=')[1]
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break
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else:
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return
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if hypervisors:
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return helpers.parse_mappings(hypervisors.split(';'),
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unique_values=False)
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def _send_deferred_batch(state):
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if not state:
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return
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deferred_batch = state.deferred_sync()
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for deferred in deferred_batch:
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try:
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LOG.debug('Placement client: %s', str(deferred))
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deferred.execute()
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except Exception:
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LOG.exception('Placement client call failed: %s', str(deferred))
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def _dict_chassis_config(state):
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if state:
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return {ovn_const.RP_BANDWIDTHS: state._rp_bandwidths,
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ovn_const.RP_INVENTORY_DEFAULTS: state._rp_inventory_defaults,
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ovn_const.RP_HYPERVISORS: state._hypervisor_rps}
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class ChassisBandwidthConfigEvent(row_event.RowEvent):
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"""Chassis create update event to track the bandwidth config changes."""
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def __init__(self, placement_extension):
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self._placement_extension = placement_extension
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# NOTE(ralonsoh): BW resource provider information is stored in
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# "Chassis", not "Chassis_Private".
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table = 'Chassis'
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events = (self.ROW_CREATE, self.ROW_UPDATE)
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super().__init__(events, table, None)
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self.event_name = 'ChassisBandwidthConfigEvent'
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def run(self, event, row, old):
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name2uuid = self._placement_extension.name2uuid()
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state = self._placement_extension.build_placement_state(row, name2uuid)
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_send_deferred_batch(state)
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self._placement_extension.add_chassis_config(
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row.name, _dict_chassis_config(state))
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ch_config = self._placement_extension.get_chassis_config(row.name)
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LOG.debug('OVN chassis %(chassis)s Placement configuration modified: '
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'%(config)s', {'chassis': row.name, 'config': ch_config})
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@common_utils.SingletonDecorator
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class OVNClientPlacementExtension(object):
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"""OVN client Placement API extension"""
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def __init__(self, driver):
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LOG.info('Starting OVNClientPlacementExtension')
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super().__init__()
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self._driver = driver
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self._placement_plugin = None
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self._plugin = None
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self._ovn_mech_driver = None
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self._enabled = bool(self.placement_plugin)
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self._chassis = {} # Initial config read could take some time.
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if not self._enabled:
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return
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try:
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self._driver._sb_idl.idl.notify_handler.watch_events(
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[ChassisBandwidthConfigEvent(self)])
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except AttributeError:
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self._enabled = False
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if not self._enabled:
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return
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self.uuid_ns = self.ovn_mech_driver.resource_provider_uuid5_namespace
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self.supported_vnic_types = self.ovn_mech_driver.supported_vnic_types
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self._chassis = self._read_initial_chassis_config()
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@property
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def placement_plugin(self):
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if self._placement_plugin is None:
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self._placement_plugin = directory.get_plugin(
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plugins_constants.PLACEMENT_REPORT)
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return self._placement_plugin
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@property
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def plugin(self):
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if self._plugin is None:
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self._plugin = self._driver._plugin
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return self._plugin
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@property
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def ovn_mech_driver(self):
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if self._ovn_mech_driver is None:
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self._ovn_mech_driver = (
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self.plugin.mechanism_manager.mech_drivers['ovn'].obj)
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return self._ovn_mech_driver
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@property
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def chassis(self):
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return self._chassis
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def _read_initial_chassis_config(self):
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chassis = {}
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name2uuid = self.name2uuid()
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for ch in self._driver._sb_idl.chassis_list().execute(
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check_error=True):
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state = self.build_placement_state(ch, name2uuid)
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_send_deferred_batch(state)
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config = _dict_chassis_config(state)
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if config:
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chassis[ch.name] = config
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msg = '\n'.join(['Chassis %s: %s' % (name, config)
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for (name, config) in chassis.items()])
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LOG.debug('OVN chassis Placement initial configuration:\n%s', msg)
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return chassis
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def name2uuid(self, name=None):
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try:
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rps = self.placement_plugin._placement_client.\
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list_resource_providers(name=name)['resource_providers']
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except (ks_exc.HttpError, ks_exc.ClientException):
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LOG.warning('Error connecting to Placement API.')
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return {}
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return {rp['name']: rp['uuid'] for rp in rps}
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def build_placement_state(self, chassis, name2uuid):
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bridge_mappings = _parse_bridge_mappings(chassis)
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cms_options = _parse_ovn_cms_options(chassis)
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LOG.debug('Building placement options for chassis %s: %s',
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chassis.name, cms_options)
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hypervisor_rps = {}
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try:
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for device, hyperv in cms_options[
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ovn_const.RP_HYPERVISORS].items():
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hypervisor_rps[device] = {'name': hyperv,
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'uuid': name2uuid[hyperv]}
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except KeyError:
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LOG.warning('Error updating BW information from chassis '
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'%(chassis)s, CMS options: %(cms_options)s',
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{'chassis': chassis.name, 'cms_options': cms_options})
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return
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return placement_report.PlacementState(
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rp_bandwidths=cms_options[ovn_const.RP_BANDWIDTHS],
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rp_inventory_defaults=cms_options[
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ovn_const.RP_INVENTORY_DEFAULTS],
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driver_uuid_namespace=self.uuid_ns,
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agent_type=ovn_const.OVN_CONTROLLER_AGENT,
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hypervisor_rps=hypervisor_rps,
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device_mappings=bridge_mappings,
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supported_vnic_types=self.supported_vnic_types,
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client=self.placement_plugin._placement_client)
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def get_chassis_config(self, chassis_name):
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try:
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return self._chassis[chassis_name]
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except KeyError:
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return
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def add_chassis_config(self, chassis_name, config):
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if config:
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self._chassis[chassis_name] = config
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