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# Copyright (c) 2016 Cable Television Laboratories, Inc. ("CableLabs")
# and others. 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.
import logging
from snaps import file_utils
from glanceclient.client import Client
from snaps.openstack.utils import keystone_utils
__author__ = 'spisarski'
logger = logging.getLogger('glance_utils')
"""
Utilities for basic neutron API calls
"""
def glance_client(os_creds):
"""
Creates and returns a glance client object
:return: the glance client
"""
return Client(version=os_creds.image_api_version, session=keystone_utils.keystone_session(os_creds))
def get_image(nova, glance, image_name):
"""
Returns an OpenStack image object for a given name
:param nova: the Nova client
:param glance: the Glance client
:param image_name: the image name to lookup
:return: the image object or None
"""
try:
image_dict = nova.images.find(name=image_name)
if image_dict:
return glance.images.get(image_dict.id)
except:
pass
return None
def create_image(glance, image_settings):
"""
Creates and returns OpenStack image object with an external URL
:param glance: the glance client
:param image_settings: the image settings object
:return: the OpenStack image object
:raise Exception if using a file and it cannot be found
"""
if image_settings.url:
return glance.images.create(name=image_settings.name, disk_format=image_settings.format,
container_format="bare", location=image_settings.url)
elif image_settings.image_file:
image_file = file_utils.get_file(image_settings.image_file)
return glance.images.create(name=image_settings.name, disk_format=image_settings.format,
container_format="bare", data=image_file)
def delete_image(glance, image):
"""
Deletes an image from OpenStack
:param glance: the glance client
:param image: the image to delete
"""
glance.images.delete(image)
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