696 lines
25 KiB
Python
696 lines
25 KiB
Python
# Copyright 2012 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# All Rights Reserved.
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#
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# Copyright 2012 Nebula, Inc.
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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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from __future__ import absolute_import
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import collections
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import itertools
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import json
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import logging
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import os
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from django.conf import settings
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from django.core.files.uploadedfile import InMemoryUploadedFile
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from django.core.files.uploadedfile import SimpleUploadedFile
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from django.core.files.uploadedfile import TemporaryUploadedFile
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import glanceclient as glance_client
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import six
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from six.moves import _thread as thread
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from horizon.utils import functions as utils
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from horizon.utils.memoized import memoized # noqa
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from openstack_dashboard.api import base
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LOG = logging.getLogger(__name__)
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VERSIONS = base.APIVersionManager("image", preferred_version=2)
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try:
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from glanceclient.v2 import client as glance_client_v2
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VERSIONS.load_supported_version(2, {"client": glance_client_v2,
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"version": 2})
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except ImportError:
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pass
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try:
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from glanceclient.v1 import client as glance_client_v1
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VERSIONS.load_supported_version(1, {"client": glance_client_v1,
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"version": 1})
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except ImportError:
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pass
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class Image(base.APIResourceWrapper):
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_attrs = {"architecture", "container_format", "disk_format", "created_at",
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"owner", "size", "id", "status", "updated_at", "checksum",
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"visibility", "name", "is_public", "protected", "min_disk",
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"min_ram"}
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_ext_attrs = {"file", "locations", "schema", "tags", "virtual_size",
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"kernel_id", "ramdisk_id", "image_url"}
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def __init__(self, apiresource):
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super(Image, self).__init__(apiresource)
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def __getattribute__(self, attr):
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# Because Glance v2 treats custom properties as normal
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# attributes, we need to be more flexible than the resource
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# wrappers usually allow. In v1 they were defined under a
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# "properties" attribute.
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if VERSIONS.active >= 2 and attr == "properties":
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return {k: v for (k, v) in self._apiresource.items()
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if self.property_visible(k)}
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try:
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return object.__getattribute__(self, attr)
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except AttributeError:
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return getattr(self._apiresource, attr)
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@property
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def name(self):
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return getattr(self._apiresource, 'name', None)
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@property
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def size(self):
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image_size = getattr(self._apiresource, 'size', 0)
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if image_size is None:
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return 0
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return image_size
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@size.setter
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def size(self, value):
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self._apiresource.size = value
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@property
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def is_public(self):
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# Glance v2 no longer has a 'is_public' attribute, but uses a
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# 'visibility' attribute instead.
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return (getattr(self._apiresource, 'is_public', None) or
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getattr(self._apiresource, 'visibility', None) == "public")
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def property_visible(self, prop_name, show_ext_attrs=False):
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if show_ext_attrs:
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return prop_name not in self._attrs
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else:
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return prop_name not in (self._attrs | self._ext_attrs)
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def to_dict(self, show_ext_attrs=False):
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# When using v1 Image objects (including when running unit tests
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# for v2), self._apiresource is not iterable. In that case,
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# the properties are included in the apiresource dict, so
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# just return that dict.
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if not isinstance(self._apiresource, collections.Iterable):
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return self._apiresource.to_dict()
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image_dict = super(Image, self).to_dict()
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image_dict['is_public'] = self.is_public
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image_dict['properties'] = {
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k: self._apiresource[k] for k in self._apiresource
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if self.property_visible(k, show_ext_attrs=show_ext_attrs)}
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return image_dict
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def __eq__(self, other_image):
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return self._apiresource == other_image._apiresource
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def __ne__(self, other_image):
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return not self.__eq__(other_image)
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@memoized
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def glanceclient(request, version=None):
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api_version = VERSIONS.get_active_version()
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url = base.url_for(request, 'image')
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insecure = getattr(settings, 'OPENSTACK_SSL_NO_VERIFY', False)
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cacert = getattr(settings, 'OPENSTACK_SSL_CACERT', None)
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# TODO(jpichon): Temporarily keep both till we update the API calls
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# to stop hardcoding a version in this file. Once that's done we
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# can get rid of the deprecated 'version' parameter.
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if version is None:
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return api_version['client'].Client(url, token=request.user.token.id,
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insecure=insecure, cacert=cacert)
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else:
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return glance_client.Client(version, url, token=request.user.token.id,
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insecure=insecure, cacert=cacert)
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# Note: Glance is adding more than just public and private in Newton or later
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PUBLIC_TO_VISIBILITY_MAP = {
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None: None,
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True: 'public',
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False: 'private'
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}
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def _normalize_is_public_filter(filters):
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if not filters:
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return
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# Glance v1 uses filter 'is_public' (True, False).
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# Glance v2 uses filter 'visibility' ('public', 'private', ...).
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if VERSIONS.active >= 2:
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if 'is_public' in filters:
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# Glance v2: Replace 'is_public' with 'visibility'.
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visibility = PUBLIC_TO_VISIBILITY_MAP[filters['is_public']]
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del filters['is_public']
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if visibility is not None:
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filters['visibility'] = visibility
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elif 'visibility' in filters:
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# Glance v1: Replace 'visibility' with 'is_public'.
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filters['is_public'] = (
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getattr(filters, 'visibility', None) == "public")
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del filters['visibility']
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def _normalize_owner_id_filter(filters):
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if not filters:
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return
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# Glance v1 uses filter 'property-owner_id' (Project ID).
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# Glance v2 uses filter 'owner' (Project ID).
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if VERSIONS.active >= 2:
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if 'property-owner_id' in filters:
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# Glance v2: Replace 'property-owner_id' with 'owner'.
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filters['owner'] = filters['property-owner_id']
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del filters['property-owner_id']
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elif 'owner' in filters:
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# Glance v1: Replace 'owner' with 'property-owner_id'.
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filters['property-owner_id'] = filters['owner']
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del filters['owner']
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def _normalize_list_input(filters, **kwargs):
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_normalize_is_public_filter(filters)
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_normalize_owner_id_filter(filters)
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if VERSIONS.active < 2:
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# Glance v1 client processes some keywords specifically.
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# Others, it just takes as a nested dict called filters.
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# This results in the following being passed into the glance client:
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# {
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# 'is_public': u'true',
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# 'sort_key': u'name',
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# 'sort_dir': u'asc',
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# 'filters': {
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# u'min_disk': u'0',
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# u'name': u'mysql',
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# 'properties': {
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# u'os_shutdown_timeout': u'1'
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# }
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# }
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# }
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v1_keywords = ['page_size', 'limit', 'sort_dir', 'sort_key', 'marker',
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'is_public', 'return_req_id', 'paginate']
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filters = {}
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properties = {}
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for key, value in iter(kwargs.items()):
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if key in v1_keywords:
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continue
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else:
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filters[key] = value
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del kwargs[key]
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if properties:
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filters['properties'] = properties
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if filters:
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kwargs['filters'] = filters
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def image_delete(request, image_id):
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return glanceclient(request).images.delete(image_id)
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def image_get(request, image_id):
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"""Returns an Image object populated with metadata for image
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with supplied identifier.
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"""
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image = glanceclient(request).images.get(image_id)
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return Image(image)
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def image_list_detailed(request, marker=None, sort_dir='desc',
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sort_key='created_at', filters=None, paginate=False,
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reversed_order=False, **kwargs):
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"""Thin layer above glanceclient, for handling pagination issues.
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It provides iterating both forward and backward on top of ascetic
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OpenStack pagination API - which natively supports only iterating forward
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through the entries. Thus in order to retrieve list of objects at previous
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page, a request with the reverse entries order had to be made to Glance,
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using the first object id on current page as the marker - restoring
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the original items ordering before sending them back to the UI.
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.. param:: request
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The request object coming from browser to be passed further into
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Glance service.
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.. param:: marker
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The id of an object which defines a starting point of a query sent to
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Glance service.
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.. param:: sort_dir
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The direction by which the resulting image list throughout all pages
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(if pagination is enabled) will be sorted. Could be either 'asc'
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(ascending) or 'desc' (descending), defaults to 'desc'.
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.. param:: sort_key
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The name of key by by which the resulting image list throughout all
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pages (if pagination is enabled) will be sorted. Defaults to
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'created_at'.
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.. param:: filters
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A dictionary of filters passed as is to Glance service.
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.. param:: paginate
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Whether the pagination is enabled. If it is, then the number of
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entries on a single page of images table is limited to the specific
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number stored in browser cookies.
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.. param:: reversed_order
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Set this flag to True when it's necessary to get a reversed list of
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images from Glance (used for navigating the images list back in UI).
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"""
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limit = getattr(settings, 'API_RESULT_LIMIT', 1000)
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page_size = utils.get_page_size(request)
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if paginate:
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request_size = page_size + 1
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else:
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request_size = limit
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_normalize_list_input(filters, **kwargs)
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kwargs = {'filters': filters or {}}
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if marker:
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kwargs['marker'] = marker
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kwargs['sort_key'] = sort_key
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if not reversed_order:
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kwargs['sort_dir'] = sort_dir
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else:
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kwargs['sort_dir'] = 'desc' if sort_dir == 'asc' else 'asc'
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images_iter = glanceclient(request).images.list(page_size=request_size,
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limit=limit,
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**kwargs)
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has_prev_data = False
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has_more_data = False
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if paginate:
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images = list(itertools.islice(images_iter, request_size))
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# first and middle page condition
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if len(images) > page_size:
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images.pop(-1)
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has_more_data = True
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# middle page condition
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if marker is not None:
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has_prev_data = True
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# first page condition when reached via prev back
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elif reversed_order and marker is not None:
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has_more_data = True
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# last page condition
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elif marker is not None:
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has_prev_data = True
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# restore the original ordering here
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if reversed_order:
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images = sorted(images, key=lambda image:
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(getattr(image, sort_key) or '').lower(),
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reverse=(sort_dir == 'desc'))
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else:
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images = list(images_iter)
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# TODO(jpichon): Do it better
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wrapped_images = []
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for image in images:
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wrapped_images.append(Image(image))
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return wrapped_images, has_more_data, has_prev_data
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def image_update(request, image_id, **kwargs):
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image_data = kwargs.get('data', None)
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try:
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# Horizon doesn't support purging image properties. Make sure we don't
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# unintentionally remove properties when using v1. We don't need a
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# similar setting for v2 because you have to specify which properties
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# to remove, and the default is nothing gets removed.
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if VERSIONS.active < 2:
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kwargs['purge_props'] = False
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return Image(glanceclient(request).images.update(
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image_id, **kwargs))
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finally:
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if image_data:
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try:
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os.remove(image_data.file.name)
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except Exception as e:
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filename = str(image_data.file)
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if hasattr(image_data.file, 'name'):
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filename = image_data.file.name
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msg = (('Failed to remove temporary image file '
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'%(file)s (%(e)s)') %
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dict(file=filename, e=str(e)))
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LOG.warning(msg)
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def get_image_upload_mode():
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if getattr(settings, 'HORIZON_IMAGES_ALLOW_UPLOAD', None) is False:
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return 'off'
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mode = getattr(settings, 'HORIZON_IMAGES_UPLOAD_MODE', 'legacy')
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if mode not in ('off', 'legacy', 'direct'):
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LOG.warning('HORIZON_IMAGES_UPLOAD_MODE has an unrecognized value of '
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'"%s", reverting to default "legacy" value' % mode)
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mode = 'legacy'
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return mode
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class ExternallyUploadedImage(Image):
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def __init__(self, apiresource, request):
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super(ExternallyUploadedImage, self).__init__(apiresource)
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image_endpoint = base.url_for(request, 'image', 'publicURL')
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if VERSIONS.active >= 2:
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upload_template = "%s/v2/images/%s/file"
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else:
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upload_template = "%s/v1/images/%s"
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self._url = upload_template % (image_endpoint, self.id)
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self._token_id = request.user.token.id
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def to_dict(self):
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base_dict = super(ExternallyUploadedImage, self).to_dict()
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base_dict.update({
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'upload_url': self._url,
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'token_id': self._token_id
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})
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return base_dict
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@property
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def upload_url(self):
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return self._url
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@property
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def token_id(self):
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return self._token_id
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def image_create(request, **kwargs):
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"""Create image.
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:param kwargs:
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* copy_from: URL from which Glance server should immediately copy
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the data and store it in its configured image store.
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* data: Form data posted from client.
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* location: URL where the data for this image already resides.
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In the case of 'copy_from' and 'location', the Glance server
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will give us a immediate response from create and handle the data
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asynchronously.
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In the case of 'data' the process of uploading the data may take
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some time and is handed off to a separate thread.
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"""
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data = kwargs.pop('data', None)
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location = None
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if VERSIONS.active >= 2:
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location = kwargs.pop('location', None)
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image = glanceclient(request).images.create(**kwargs)
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if location is not None:
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glanceclient(request).images.add_location(image.id, location, {})
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if data:
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if isinstance(data, six.string_types):
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# The image data is meant to be uploaded externally, return a
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# special wrapper to bypass the web server in a subsequent upload
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return ExternallyUploadedImage(image, request)
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elif isinstance(data, TemporaryUploadedFile):
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# Hack to fool Django, so we can keep file open in the new thread.
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data.file.close_called = True
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elif isinstance(data, InMemoryUploadedFile):
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# Clone a new file for InMemeoryUploadedFile.
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# Because the old one will be closed by Django.
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data = SimpleUploadedFile(data.name,
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data.read(),
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data.content_type)
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if VERSIONS.active < 2:
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thread.start_new_thread(image_update,
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(request, image.id),
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{'data': data})
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else:
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def upload():
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return glanceclient(request).images.upload(image.id, data)
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thread.start_new_thread(upload, ())
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return Image(image)
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def image_update_properties(request, image_id, remove_props=None, **kwargs):
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"""Add or update a custom property of an image."""
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return glanceclient(request, '2').images.update(image_id,
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remove_props,
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**kwargs)
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def image_delete_properties(request, image_id, keys):
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"""Delete custom properties for an image."""
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return glanceclient(request, '2').images.update(image_id, keys)
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class BaseGlanceMetadefAPIResourceWrapper(base.APIResourceWrapper):
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@property
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def description(self):
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return (getattr(self._apiresource, 'description', None) or
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getattr(self._apiresource, 'display_name', None))
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def as_json(self, indent=4):
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result = collections.OrderedDict()
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for attr in self._attrs:
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if hasattr(self, attr):
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result[attr] = getattr(self, attr)
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return json.dumps(result, indent=indent)
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def to_dict(self):
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return self._apiresource
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class Namespace(BaseGlanceMetadefAPIResourceWrapper):
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_attrs = ['namespace', 'display_name', 'description',
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'resource_type_associations', 'visibility', 'protected',
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'created_at', 'updated_at', 'properties', 'objects']
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@property
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def resource_type_names(self):
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result = [resource_type['name'] for resource_type in
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getattr(self._apiresource, 'resource_type_associations')]
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return sorted(result)
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@property
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def public(self):
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if getattr(self._apiresource, 'visibility') == 'public':
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return True
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else:
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return False
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def filter_properties_target(namespaces_iter,
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resource_types,
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properties_target):
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"""Filter metadata namespaces based on the given resource types and
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properties target.
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:param namespaces_iter: Metadata namespaces iterable.
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:param resource_types: List of resource type names.
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:param properties_target: Name of the properties target.
|
|
"""
|
|
def filter_namespace(namespace):
|
|
for asn in namespace.get('resource_type_associations'):
|
|
if (asn.get('name') in resource_types and
|
|
asn.get('properties_target') == properties_target):
|
|
return True
|
|
return False
|
|
return filter(filter_namespace, namespaces_iter)
|
|
|
|
|
|
@memoized
|
|
def metadefs_namespace_get(request, namespace, resource_type=None, wrap=False):
|
|
namespace = glanceclient(request, '2').\
|
|
metadefs_namespace.get(namespace, resource_type=resource_type)
|
|
# There were problems with using the wrapper class in
|
|
# nested json serialization. So sometimes, it is not desirable
|
|
# to wrap.
|
|
if wrap:
|
|
return Namespace(namespace)
|
|
else:
|
|
return namespace
|
|
|
|
|
|
def metadefs_namespace_list(request,
|
|
filters=None,
|
|
sort_dir='asc',
|
|
sort_key='namespace',
|
|
marker=None,
|
|
paginate=False):
|
|
"""Retrieve a listing of Namespaces
|
|
|
|
:param paginate: If true will perform pagination based on settings.
|
|
:param marker: Specifies the namespace of the last-seen namespace.
|
|
The typical pattern of limit and marker is to make an
|
|
initial limited request and then to use the last
|
|
namespace from the response as the marker parameter
|
|
in a subsequent limited request. With paginate, limit
|
|
is automatically set.
|
|
:param sort_dir: The sort direction ('asc' or 'desc').
|
|
:param sort_key: The field to sort on (for example, 'created_at'). Default
|
|
is namespace. The way base namespaces are loaded into glance
|
|
typically at first deployment is done in a single transaction
|
|
giving them a potentially unpredictable sort result when using
|
|
create_at.
|
|
:param filters: specifies addition fields to filter on such as
|
|
resource_types.
|
|
:returns A tuple of three values:
|
|
1) Current page results
|
|
2) A boolean of whether or not there are previous page(s).
|
|
3) A boolean of whether or not there are more page(s).
|
|
|
|
"""
|
|
# Listing namespaces requires the v2 API. If not supported we return an
|
|
# empty array so callers don't need to worry about version checking.
|
|
if get_version() < 2:
|
|
return [], False, False
|
|
|
|
if filters is None:
|
|
filters = {}
|
|
limit = getattr(settings, 'API_RESULT_LIMIT', 1000)
|
|
page_size = utils.get_page_size(request)
|
|
|
|
if paginate:
|
|
request_size = page_size + 1
|
|
else:
|
|
request_size = limit
|
|
|
|
kwargs = {'filters': filters}
|
|
if marker:
|
|
kwargs['marker'] = marker
|
|
kwargs['sort_dir'] = sort_dir
|
|
kwargs['sort_key'] = sort_key
|
|
|
|
namespaces_iter = glanceclient(request, '2').metadefs_namespace.list(
|
|
page_size=request_size, limit=limit, **kwargs)
|
|
|
|
# Filter the namespaces based on the provided properties_target since this
|
|
# is not supported by the metadata namespaces API.
|
|
resource_types = filters.get('resource_types')
|
|
properties_target = filters.get('properties_target')
|
|
if resource_types and properties_target:
|
|
namespaces_iter = filter_properties_target(namespaces_iter,
|
|
resource_types,
|
|
properties_target)
|
|
|
|
has_prev_data = False
|
|
has_more_data = False
|
|
if paginate:
|
|
namespaces = list(itertools.islice(namespaces_iter, request_size))
|
|
# first and middle page condition
|
|
if len(namespaces) > page_size:
|
|
namespaces.pop(-1)
|
|
has_more_data = True
|
|
# middle page condition
|
|
if marker is not None:
|
|
has_prev_data = True
|
|
# first page condition when reached via prev back
|
|
elif sort_dir == 'desc' and marker is not None:
|
|
has_more_data = True
|
|
# last page condition
|
|
elif marker is not None:
|
|
has_prev_data = True
|
|
else:
|
|
namespaces = list(namespaces_iter)
|
|
|
|
namespaces = [Namespace(namespace) for namespace in namespaces]
|
|
return namespaces, has_more_data, has_prev_data
|
|
|
|
|
|
def metadefs_namespace_full_list(request, resource_type, filters=None,
|
|
*args, **kwargs):
|
|
filters = filters or {}
|
|
filters['resource_types'] = [resource_type]
|
|
namespaces, has_more_data, has_prev_data = metadefs_namespace_list(
|
|
request, filters, *args, **kwargs
|
|
)
|
|
return [
|
|
metadefs_namespace_get(request, x.namespace, resource_type)
|
|
for x in namespaces
|
|
], has_more_data, has_prev_data
|
|
|
|
|
|
def metadefs_namespace_create(request, namespace):
|
|
return glanceclient(request, '2').metadefs_namespace.create(**namespace)
|
|
|
|
|
|
def metadefs_namespace_update(request, namespace_name, **properties):
|
|
return glanceclient(request, '2').metadefs_namespace.update(
|
|
namespace_name,
|
|
**properties)
|
|
|
|
|
|
def metadefs_namespace_delete(request, namespace_name):
|
|
return glanceclient(request, '2').metadefs_namespace.delete(namespace_name)
|
|
|
|
|
|
def metadefs_resource_types_list(request):
|
|
# Listing Resource Types requires the v2 API. If not supported we return
|
|
# an empty array so callers don't need to worry about version checking.
|
|
if get_version() < 2:
|
|
return []
|
|
else:
|
|
return glanceclient(request, '2').metadefs_resource_type.list()
|
|
|
|
|
|
def metadefs_namespace_resource_types(request, namespace_name):
|
|
resource_types = glanceclient(request, '2').metadefs_resource_type.get(
|
|
namespace_name)
|
|
|
|
# metadefs_resource_type.get() returns generator, converting it to list
|
|
return list(resource_types)
|
|
|
|
|
|
def metadefs_namespace_add_resource_type(request,
|
|
namespace_name,
|
|
resource_type):
|
|
return glanceclient(request, '2').metadefs_resource_type.associate(
|
|
namespace_name, **resource_type)
|
|
|
|
|
|
def metadefs_namespace_remove_resource_type(request,
|
|
namespace_name,
|
|
resource_type_name):
|
|
glanceclient(request, '2').metadefs_resource_type.deassociate(
|
|
namespace_name, resource_type_name)
|
|
|
|
|
|
def get_version():
|
|
return VERSIONS.active
|