136 lines
4.2 KiB
Python
136 lines
4.2 KiB
Python
# Copyright 2012 OpenStack Foundation
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# Copyright 2013 Hewlett-Packard Development Company, L.P.
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# All Rights Reserved.
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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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import copy
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from oslo_serialization import jsonutils
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from oslo_utils import timeutils
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from oslo_utils import uuidutils
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from ironic.common import exception
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_IMAGE_ATTRIBUTES = ['size', 'disk_format', 'owner',
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'container_format', 'checksum', 'id',
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'name', 'created_at', 'updated_at',
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'deleted_at', 'deleted', 'status',
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'min_disk', 'min_ram', 'tags', 'visibility',
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'protected', 'file', 'schema', 'os_hash_algo',
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'os_hash_value']
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def _extract_attributes(image):
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output = {}
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for attr in _IMAGE_ATTRIBUTES:
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output[attr] = getattr(image, attr, None)
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output['properties'] = {}
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output['schema'] = image.schema
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for image_property in set(image) - set(_IMAGE_ATTRIBUTES):
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output['properties'][image_property] = image[image_property]
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return output
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def _convert_timestamps_to_datetimes(image_meta):
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"""Convert timestamps to datetime objects
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Returns image metadata with timestamp fields converted to naive UTC
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datetime objects.
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"""
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for attr in ['created_at', 'updated_at', 'deleted_at']:
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if image_meta.get(attr):
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image_meta[attr] = timeutils.normalize_time(
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timeutils.parse_isotime(image_meta[attr]))
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return image_meta
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_CONVERT_PROPS = ('block_device_mapping', 'mappings')
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def _convert(metadata):
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metadata = copy.deepcopy(metadata)
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properties = metadata.get('properties')
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if properties:
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for attr in _CONVERT_PROPS:
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if attr in properties:
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prop = properties[attr]
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if isinstance(prop, str):
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properties[attr] = jsonutils.loads(prop)
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return metadata
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def parse_image_id(image_href):
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"""Parse an image id from image href.
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:param image_href: href of an image
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:returns: image id parsed from image_href
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:raises InvalidImageRef: when input image href is invalid
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"""
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image_href = str(image_href)
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if uuidutils.is_uuid_like(image_href):
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image_id = image_href
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elif image_href.startswith('glance://'):
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image_id = image_href.split('/')[-1]
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if not uuidutils.is_uuid_like(image_id):
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raise exception.InvalidImageRef(image_href=image_href)
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else:
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raise exception.InvalidImageRef(image_href=image_href)
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return image_id
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def translate_from_glance(image):
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image_meta = _extract_attributes(image)
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image_meta = _convert_timestamps_to_datetimes(image_meta)
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image_meta = _convert(image_meta)
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return image_meta
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def is_image_available(context, image):
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"""Check image availability.
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This check is needed in case Nova and Glance are deployed
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without authentication turned on.
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"""
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# The presence of an auth token implies this is an authenticated
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# request and we need not handle the noauth use-case.
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if hasattr(context, 'auth_token') and context.auth_token:
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return True
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if getattr(image, 'visibility', None) == 'public' or context.is_admin:
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return True
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return (context.project_id
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and getattr(image, 'owner', None) == context.project_id)
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def is_image_active(image):
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"""Check the image status.
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This check is needed in case the Glance image is stuck in queued status
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or pending_delete.
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"""
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return str(getattr(image, 'status', None)) == "active"
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def is_glance_image(image_href):
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if not isinstance(image_href, str):
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return False
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return (image_href.startswith('glance://')
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or uuidutils.is_uuid_like(image_href))
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