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# Copyright 2011 Justin Santa Barbara
# Copyright 2012 OpenStack Foundation
# 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.
"""Implementation of a fake image service."""
import copy
import datetime
from oslo_log import log as logging
from oslo_utils import uuidutils
import nova.conf
from nova import exception
from nova.objects import fields as obj_fields
from nova.tests import fixtures as nova_fixtures
CONF = nova.conf.CONF
LOG = logging.getLogger(__name__)
AUTO_DISK_CONFIG_ENABLED_IMAGE_UUID = '70a599e0-31e7-49b7-b260-868f441e862b'
class _FakeImageService(object):
"""Mock (fake) image service for unit testing."""
def __init__(self):
self.images = {}
# NOTE(justinsb): The OpenStack API can't upload an image?
# So, make sure we've got one..
timestamp = datetime.datetime(2011, 1, 1, 1, 2, 3)
image1 = {'id': '155d900f-4e14-4e4c-a73d-069cbf4541e6',
'name': 'fakeimage123456',
'created_at': timestamp,
'updated_at': timestamp,
'deleted_at': None,
'deleted': False,
'status': 'active',
'is_public': False,
'container_format': 'raw',
'disk_format': 'raw',
'size': '25165824',
'properties': {
'kernel_id': CONF.null_kernel,
'ramdisk_id': CONF.null_kernel,
'architecture': obj_fields.Architecture.X86_64}}
image2 = {'id': 'a2459075-d96c-40d5-893e-577ff92e721c',
'name': 'fakeimage123456',
'created_at': timestamp,
'updated_at': timestamp,
'deleted_at': None,
'deleted': False,
'status': 'active',
'is_public': True,
'container_format': 'ami',
'disk_format': 'ami',
'size': '58145823',
'properties': {'kernel_id': CONF.null_kernel,
'ramdisk_id': CONF.null_kernel}}
image3 = {'id': '76fa36fc-c930-4bf3-8c8a-ea2a2420deb6',
'name': 'fakeimage123456',
'created_at': timestamp,
'updated_at': timestamp,
'deleted_at': None,
'deleted': False,
'status': 'active',
'is_public': True,
'container_format': 'bare',
'disk_format': 'raw',
'size': '83594576',
'properties': {'kernel_id': CONF.null_kernel,
'ramdisk_id': CONF.null_kernel}}
image4 = {'id': 'cedef40a-ed67-4d10-800e-17455edce175',
'name': 'fakeimage123456',
'created_at': timestamp,
'updated_at': timestamp,
'deleted_at': None,
'deleted': False,
'status': 'active',
'is_public': True,
'container_format': 'ami',
'disk_format': 'ami',
'size': '84035174',
'properties': {'kernel_id': CONF.null_kernel,
'ramdisk_id': CONF.null_kernel}}
image5 = {'id': 'c905cedb-7281-47e4-8a62-f26bc5fc4c77',
'name': 'fakeimage123456',
'created_at': timestamp,
'updated_at': timestamp,
'deleted_at': None,
'deleted': False,
'status': 'active',
'is_public': True,
'container_format': 'ami',
'disk_format': 'ami',
'size': '26360814',
'properties': {'kernel_id':
'155d900f-4e14-4e4c-a73d-069cbf4541e6',
'ramdisk_id': None}}
image6 = {'id': 'a440c04b-79fa-479c-bed1-0b816eaec379',
'name': 'fakeimage6',
'created_at': timestamp,
'updated_at': timestamp,
'deleted_at': None,
'deleted': False,
'status': 'active',
'is_public': False,
'container_format': 'ova',
'disk_format': 'vhd',
'size': '49163826',
'properties': {
'kernel_id': CONF.null_kernel,
'ramdisk_id': CONF.null_kernel,
'architecture': obj_fields.Architecture.X86_64,
'auto_disk_config': 'False'}}
image7 = {'id': AUTO_DISK_CONFIG_ENABLED_IMAGE_UUID,
'name': 'fakeimage7',
'created_at': timestamp,
'updated_at': timestamp,
'deleted_at': None,
'deleted': False,
'status': 'active',
'is_public': False,
'container_format': 'ova',
'disk_format': 'vhd',
'size': '74185822',
'properties': {
'kernel_id': CONF.null_kernel,
'ramdisk_id': CONF.null_kernel,
'architecture': obj_fields.Architecture.X86_64,
'auto_disk_config': 'True'}}
self.create(None, image1)
self.create(None, image2)
self.create(None, image3)
self.create(None, image4)
self.create(None, image5)
self.create(None, image6)
self.create(None, image7)
self._imagedata = {}
super(_FakeImageService, self).__init__()
# TODO(bcwaldon): implement optional kwargs such as limit, sort_dir
def detail(self, context, **kwargs):
"""Return list of detailed image information."""
return copy.deepcopy(list(self.images.values()))
def download(self, context, image_id, dst_path=None, data=None):
self.show(context, image_id)
if data:
data.write(self._imagedata.get(image_id, ''))
elif dst_path:
with open(dst_path, 'wb') as data:
data.write(self._imagedata.get(image_id, ''))
def show(self, context, image_id, include_locations=False,
show_deleted=True):
"""Get data about specified image.
Returns a dict containing image data for the given opaque image id.
"""
image = self.images.get(str(image_id))
if image:
return copy.deepcopy(image)
LOG.warning('Unable to find image id %s. Have images: %s',
image_id, self.images)
raise exception.ImageNotFound(image_id=image_id)
def create(self, context, metadata, data=None):
"""Store the image data and return the new image id.
:raises: Duplicate if the image already exist.
"""
image_id = str(metadata.get('id', uuidutils.generate_uuid()))
metadata['id'] = image_id
if image_id in self.images:
raise exception.CouldNotUploadImage(image_id=image_id)
image_meta = copy.deepcopy(metadata)
# Glance sets the size value when an image is created, so we
# need to do that here to fake things out if it's not provided
# by the caller. This is needed to avoid a KeyError in the
# image-size API.
if 'size' not in image_meta:
image_meta['size'] = None
# Similarly, Glance provides the status on the image once it's created
# and this is checked in the compute API when booting a server from
# this image, so we just fake it out to be 'active' even though this
# is mostly a lie on a newly created image.
if 'status' not in metadata:
image_meta['status'] = 'active'
self.images[image_id] = image_meta
if data:
self._imagedata[image_id] = data.read()
return self.images[image_id]
def update(self, context, image_id, metadata, data=None,
purge_props=False):
"""Replace the contents of the given image with the new data.
:raises: ImageNotFound if the image does not exist.
"""
if not self.images.get(image_id):
raise exception.ImageNotFound(image_id=image_id)
if purge_props:
self.images[image_id] = copy.deepcopy(metadata)
else:
image = self.images[image_id]
try:
image['properties'].update(metadata.pop('properties'))
except KeyError:
pass
image.update(metadata)
return self.images[image_id]
def delete(self, context, image_id):
"""Delete the given image.
:raises: ImageNotFound if the image does not exist.
"""
removed = self.images.pop(image_id, None)
if not removed:
raise exception.ImageNotFound(image_id=image_id)
def get_location(self, context, image_id):
if image_id in self.images:
return 'fake_location'
return None
_fakeImageService = _FakeImageService()
def FakeImageService():
return _fakeImageService
def FakeImageService_reset():
global _fakeImageService
_fakeImageService = _FakeImageService()
def get_valid_image_id():
return AUTO_DISK_CONFIG_ENABLED_IMAGE_UUID
def stub_out_image_service(test):
"""Stubs out the image service for the test with the FakeImageService
:param test: instance of nova.test.TestCase
:returns: The stubbed out FakeImageService object
"""
image_service = FakeImageService()
test.stub_out('nova.image.glance.get_remote_image_service',
lambda x, y: (image_service, y))
test.stub_out('nova.image.glance.get_default_image_service',
lambda: image_service)
test.useFixture(nova_fixtures.ConfPatcher(
group="glance", api_servers=['http://localhost:9292']))
return image_service
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