Hardware introspection daemon for OpenStack Ironic
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ironic-inspector/ironic_inspector/plugins/pci_devices.py

70 lines
2.7 KiB

# 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.
"""Gather and distinguish PCI devices from inventory."""
import collections
import json
from oslo_config import cfg
from ironic_inspector.plugins import base
from ironic_inspector import utils
CONF = cfg.CONF
LOG = utils.getProcessingLogger(__name__)
def _parse_pci_alias_entry():
parsed_pci_devices = []
for pci_alias_entry in CONF.pci_devices.alias:
try:
parsed_entry = json.loads(pci_alias_entry)
if set(parsed_entry) != {'vendor_id', 'product_id', 'name'}:
raise KeyError("The 'alias' entry should contain "
"exactly 'vendor_id', 'product_id' and "
"'name' keys")
parsed_pci_devices.append(parsed_entry)
except (ValueError, KeyError) as ex:
LOG.error("Error parsing 'alias' option: %s", ex)
return {(dev['vendor_id'], dev['product_id']): dev['name']
for dev in parsed_pci_devices}
class PciDevicesHook(base.ProcessingHook):
"""Processing hook for counting and distinguishing various PCI devices.
That information can be later used by nova for node scheduling.
"""
aliases = _parse_pci_alias_entry()
def _found_pci_devices_count(self, found_pci_devices):
return collections.Counter([(dev['vendor_id'], dev['product_id'])
for dev in found_pci_devices
if (dev['vendor_id'], dev['product_id'])
in self.aliases])
def before_update(self, introspection_data, node_info, **kwargs):
if 'pci_devices' not in introspection_data:
if CONF.pci_devices.alias:
LOG.warning('No PCI devices information was received from '
'the ramdisk.')
return
alias_count = {self.aliases[id_pair]: count for id_pair, count in
self._found_pci_devices_count(
introspection_data['pci_devices']).items()}
if alias_count:
node_info.update_capabilities(**alias_count)
LOG.info('Found the following PCI devices: %s', alias_count)