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# Copyright 2020 Red Hat, Inc. All rights reserved.
#
# 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.
"""Validators for ``pci_passthrough`` namespaced extra specs."""
from nova.api.validation.extra_specs import base
EXTRA_SPEC_VALIDATORS = [
base.ExtraSpecValidator(
name='pci_passthrough:alias',
description=(
'Specify the number of ``$alias`` PCI device(s) to attach to the '
'instance. '
'Must be of format ``$alias:$count``, where ``$alias`` '
'corresponds to a particular PCI device class (as configured in '
'``nova.conf``) and ``$count`` is the amount of PCI devices of '
'type ``$alias`` to be assigned to the instance. '
'Use commas to specify multiple values. '
'Only supported by the libvirt virt driver.'
),
value={
'type': str,
# one or more comma-separated '$alias:$count' values
'pattern': r'[^:]+:\d+(?:\s*,\s*[^:]+:\d+)*',
},
),
]
def register():
return EXTRA_SPEC_VALIDATORS
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