Source code for ironic.drivers.modules.inspector.hooks.accelerators
# 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
from oslo_log import log as logging
import yaml
from ironic.drivers.modules.inspector.hooks import base
LOG = logging.getLogger(__name__)
CONF = cfg.CONF
[docs]
class AcceleratorsHook(base.InspectionHook):
"""Hook to set the node's accelerators property."""
def __init__(self):
super(AcceleratorsHook, self).__init__()
self._known_devices = {}
with open(CONF.inspector.known_accelerators) as f:
self._known_devices = yaml.safe_load(f)
self._validate_known_devices()
def _validate_known_devices(self):
# Do a simple check against the data source
if (not self._known_devices
or 'pci_devices' not in self._known_devices):
raise RuntimeError('Could not find pci_devices in the '
'configuration data.')
if not isinstance(self._known_devices['pci_devices'], list):
raise RuntimeError('pci_devices in the configuration file should '
'contain a list of devices.')
for device in self._known_devices['pci_devices']:
if not device.get('vendor_id') or not device.get('device_id'):
raise RuntimeError('One of the PCI devices in the '
'configuration file is missing vendor_id '
'or device_id.')
def _find_accelerator(self, vendor_id, device_id):
for dev in self._known_devices['pci_devices']:
if (dev['vendor_id'] == vendor_id
and dev['device_id'] == device_id):
return dev
def __call__(self, task, inventory, plugin_data):
pci_devices = plugin_data.get('pci_devices', [])
if not pci_devices:
LOG.warning('Unable to process accelerator devices because no PCI '
'device information was received from the ramdisk for '
'node %s.', task.node.uuid)
return
accelerators = []
for pci_dev in pci_devices:
known_device = self._find_accelerator(pci_dev['vendor_id'],
pci_dev['product_id'])
if known_device:
accelerator = {k: known_device[k] for k in known_device.keys()}
accelerator.update(pci_address=pci_dev['bus'])
accelerators.append(accelerator)
if accelerators:
LOG.info('Found the following accelerator devices for node %s: %s',
task.node.uuid, accelerators)
task.node.set_property('accelerators', accelerators)
task.node.save()
else:
LOG.info('No known accelerator devices found for node %s',
task.node.uuid)