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#
# 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_utils import uuidutils
from glanceclient import client as gc
from glanceclient import exc
from heat.engine.clients import client_exception
from heat.engine.clients import client_plugin
from heat.engine.clients import os as os_client
from heat.engine import constraints
CLIENT_NAME = 'glance'
class GlanceClientPlugin(client_plugin.ClientPlugin):
exceptions_module = [client_exception, exc]
service_types = [IMAGE] = ['image']
supported_versions = [V1, V2] = ['1', '2']
default_version = V2
def _create(self, version=None):
con = self.context
interface = self._get_client_option(CLIENT_NAME, 'endpoint_type')
return gc.Client(version, session=con.keystone_session,
interface=interface,
service_type=self.IMAGE,
region_name=self._get_region_name())
def _find_with_attr(self, entity, **kwargs):
"""Find a item for entity with attributes matching ``**kwargs``."""
matches = list(self._findall_with_attr(entity, **kwargs))
num_matches = len(matches)
if num_matches == 0:
raise client_exception.EntityMatchNotFound(entity=entity,
args=kwargs)
elif num_matches > 1:
raise client_exception.EntityUniqueMatchNotFound(entity=entity,
args=kwargs)
else:
return matches[0]
def _findall_with_attr(self, entity, **kwargs):
"""Find all items for entity with attributes matching ``**kwargs``."""
func = getattr(self.client(), entity)
filters = {'filters': kwargs}
return func.list(**filters)
def is_not_found(self, ex):
return isinstance(ex, (client_exception.EntityMatchNotFound,
exc.HTTPNotFound))
def is_over_limit(self, ex):
return isinstance(ex, exc.HTTPOverLimit)
def is_conflict(self, ex):
return isinstance(ex, exc.Conflict)
def find_image_by_name_or_id(self, image_identifier):
"""Return the ID for the specified image name or identifier.
:param image_identifier: image name or a UUID-like identifier
:returns: the id of the requested :image_identifier:
"""
return self._find_image_id(self.context.tenant_id,
image_identifier)
@os_client.MEMOIZE_FINDER
def _find_image_id(self, tenant_id, image_identifier):
# tenant id in the signature is used for the memoization key,
# that would differentiate similar resource names across tenants.
return self.get_image(image_identifier).id
def get_image(self, image_identifier):
"""Return the image object for the specified image name/id.
:param image_identifier: image name
:returns: an image object with name/id :image_identifier:
"""
if uuidutils.is_uuid_like(image_identifier):
try:
return self.client().images.get(image_identifier)
except exc.HTTPNotFound:
pass
return self._find_with_attr('images', name=image_identifier)
class ImageConstraint(constraints.BaseCustomConstraint):
expected_exceptions = (client_exception.EntityMatchNotFound,
client_exception.EntityUniqueMatchNotFound)
resource_client_name = CLIENT_NAME
resource_getter_name = 'find_image_by_name_or_id'
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