Source code for ironic.drivers.modules.inspector.hooks.pci_devices

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#    http://www.apache.org/licenses/LICENSE-2.0
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"""Gather and distinguish PCI devices from plugin_data."""

import collections
import json

from oslo_config import cfg
from oslo_log import log as logging

from ironic.common import utils
from ironic.drivers.modules.inspector.hooks import base


CONF = cfg.CONF
LOG = logging.getLogger(__name__)


def _parse_pci_alias_entries():
    parsed_pci_devices = []

    for pci_alias_entry in CONF.inspector.pci_device_alias:
        try:
            parsed_entry = json.loads(pci_alias_entry)
            if set(parsed_entry) != {'vendor_id', 'product_id', 'name'}:
                raise KeyError('The "pci_device_alias" entry should contain '
                               'exactly the "vendor_id", "product_id" and '
                               '"name" keys.')
            parsed_pci_devices.append(parsed_entry)
        except (ValueError, KeyError) as exc:
            LOG.error("Error parsing 'pci_device_alias' option: %s", exc)

    return {(dev['vendor_id'], dev['product_id']): dev['name']
            for dev in parsed_pci_devices}


[docs] class PciDevicesHook(base.InspectionHook): """Hook to count various PCI devices, and set the node's capabilities. This information can later be used by nova for node scheduling. """ _aliases = _parse_pci_alias_entries() 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])
[docs] def __call__(self, task, inventory, plugin_data): """Update node capabilities with PCI devices.""" if 'pci_devices' not in plugin_data: if CONF.inspector.pci_device_alias: LOG.warning('No information about PCI devices was received ' 'from the ramdisk.') return alias_count = {self._aliases[id_pair]: count for id_pair, count in self._found_pci_devices_count( plugin_data['pci_devices']).items()} if alias_count: LOG.info('Found the following PCI devices: %s', alias_count) old_capabilities = task.node.properties.get('capabilities') LOG.debug('Old capabilities for node %s: %s', task.node.uuid, old_capabilities) new_capabilities = utils.get_updated_capabilities(old_capabilities, alias_count) task.node.set_property('capabilities', new_capabilities) LOG.debug('New capabilities for node %s: %s', task.node.uuid, new_capabilities) task.node.save()