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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 novaclient.exceptions import NotFound
from snaps.config.flavor import FlavorConfig
from snaps.openstack.openstack_creator import OpenStackComputeObject
from snaps.openstack.utils import nova_utils
__author__ = 'spisarski'
logger = logging.getLogger('create_flavor')
MEM_PAGE_SIZE_ANY = {'hw:mem_page_size': 'any'}
MEM_PAGE_SIZE_LARGE = {'hw:mem_page_size': 'large'}
class OpenStackFlavor(OpenStackComputeObject):
"""
Class responsible for creating a user in OpenStack
"""
def __init__(self, os_creds, flavor_settings):
"""
Constructor
:param os_creds: The OpenStack connection credentials
:param flavor_settings: a FlavorConfig instance
:return:
"""
super(self.__class__, self).__init__(os_creds)
self.flavor_settings = flavor_settings
self.__flavor = None
def initialize(self):
"""
Loads the existing OpenStack flavor
:return: The Flavor domain object or None
"""
super(self.__class__, self).initialize()
self.__flavor = nova_utils.get_flavor_by_name(
self._nova, self.flavor_settings.name)
if self.__flavor:
logger.info('Found flavor with name - %s',
self.flavor_settings.name)
return self.__flavor
def create(self):
"""
Creates the image in OpenStack if it does not already exist
:return: The OpenStack flavor object
"""
self.initialize()
if not self.__flavor:
self.__flavor = nova_utils.create_flavor(
self._nova, self.flavor_settings)
if self.flavor_settings.metadata:
nova_utils.set_flavor_keys(self._nova, self.__flavor,
self.flavor_settings.metadata)
else:
logger.info('Did not create flavor due to cleanup mode')
return self.__flavor
def clean(self):
"""
Cleanse environment of all artifacts
:return: void
"""
if self.__flavor:
try:
nova_utils.delete_flavor(self._nova, self.__flavor)
except NotFound:
pass
self.__flavor = None
def get_flavor(self):
"""
Returns the OpenStack flavor object
:return:
"""
return self.__flavor
class FlavorSettings(FlavorConfig):
"""
Configuration settings for OpenStack flavor creation
"""
def __init__(self, **kwargs):
from warnings import warn
warn('Use snaps.config.flavor.FlavorConfig instead',
DeprecationWarning)
super(self.__class__, self).__init__(**kwargs)
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