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# Copyright (c) 2017 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 cinderclient.exceptions import NotFound
from snaps.config.volume_type import (
VolumeTypeConfig, VolumeTypeEncryptionConfig)
from snaps.openstack.openstack_creator import OpenStackVolumeObject
from snaps.openstack.utils import cinder_utils
__author__ = 'spisarski'
logger = logging.getLogger('create_volume_type')
class OpenStackVolumeType(OpenStackVolumeObject):
"""
Class responsible for managing an volume in OpenStack
"""
def __init__(self, os_creds, volume_type_settings):
"""
Constructor
:param os_creds: The OpenStack connection credentials
:param volume_type_settings: The volume type settings
:return:
"""
super(self.__class__, self).__init__(os_creds)
self.volume_type_settings = volume_type_settings
self.__volume_type = None
def initialize(self):
"""
Loads the existing Volume
:return: The Volume domain object or None
"""
super(self.__class__, self).initialize()
self.__volume_type = cinder_utils.get_volume_type(
self._cinder, volume_type_settings=self.volume_type_settings)
return self.__volume_type
def create(self):
"""
Creates the volume in OpenStack if it does not already exist and
returns the domain Volume object
:return: The Volume domain object or None
"""
self.initialize()
if not self.__volume_type:
self.__volume_type = cinder_utils.create_volume_type(
self._cinder, self.volume_type_settings)
logger.info(
'Created volume type with name - %s',
self.volume_type_settings.name)
return self.__volume_type
def clean(self):
"""
Cleanse environment of all artifacts
:return: void
"""
if self.__volume_type:
try:
cinder_utils.delete_volume_type(self._cinder,
self.__volume_type)
except NotFound:
pass
self.__volume_type = None
def get_volume_type(self):
"""
Returns the domain Volume object as it was populated when create() was
called
:return: the object
"""
return self.__volume_type
class VolumeTypeSettings(VolumeTypeConfig):
"""
Class to hold the configuration settings required for creating OpenStack
Volume Type objects
deprecated
"""
def __init__(self, **kwargs):
from warnings import warn
warn('Use snaps.config.volume_type.VolumeTypeConfig instead',
DeprecationWarning)
super(self.__class__, self).__init__(**kwargs)
class VolumeTypeEncryptionSettings(VolumeTypeEncryptionConfig):
"""
Class to hold the configuration settings required for creating OpenStack
Volume Type Encryption objects
deprecated
"""
def __init__(self, **kwargs):
from warnings import warn
warn('Use snaps.config.volume_type.VolumeTypeEncryptionConfig instead',
DeprecationWarning)
super(self.__class__, self).__init__(**kwargs)
class VolumeTypeCreationError(Exception):
"""
Exception to be thrown when an volume cannot be created
"""
def __init__(self, message):
Exception.__init__(self, message)
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