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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.openstack.utils import nova_utils
__author__ = 'spisarski'
logger = logging.getLogger('create_image')
DEFAULT_METADATA = {'hw:mem_page_size': 'any'}
class OpenStackFlavor:
"""
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: The flavor settings
:return:
"""
self.__os_creds = os_creds
self.flavor_settings = flavor_settings
self.__flavor = None
self.__nova = nova_utils.nova_client(self.__os_creds)
def create(self, cleanup=False):
"""
Creates the image in OpenStack if it does not already exist
:param cleanup: Denotes whether or not this is being called for cleanup or not
:return: The OpenStack flavor object
"""
self.__flavor = nova_utils.get_flavor_by_name(self.__nova, self.flavor_settings.name)
if self.__flavor:
logger.info('Found flavor with name - ' + self.flavor_settings.name)
elif not cleanup:
self.__flavor = nova_utils.create_flavor(self.__nova, self.flavor_settings)
if self.flavor_settings.metadata:
self.__flavor.set_keys(self.flavor_settings.metadata)
self.__flavor = nova_utils.get_flavor_by_name(self.__nova, self.flavor_settings.name)
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:
"""
Configuration settings for OpenStack flavor creation
"""
def __init__(self, config=None, name=None, flavor_id='auto', ram=None, disk=None, vcpus=None, ephemeral=0, swap=0,
rxtx_factor=1.0, is_public=True, metadata=DEFAULT_METADATA):
"""
Constructor
:param config: dict() object containing the configuration settings using the attribute names below as each
member's the key and overrides any of the other parameters.
:param name: the flavor's name (required)
:param flavor_id: the string ID (default 'auto')
:param ram: the required RAM in MB (required)
:param disk: the size of the root disk in GB (required)
:param vcpus: the number of virtual CPUs (required)
:param ephemeral: the size of the ephemeral disk in GB (default 0)
:param swap: the size of the dedicated swap disk in GB (default 0)
:param rxtx_factor: the receive/transmit factor to be set on ports if backend supports
QoS extension (default 1.0)
:param is_public: denotes whether or not the flavor is public (default True)
:param metadata: freeform dict() for special metadata (default hw:mem_page_size=any)
"""
if config:
self.name = config.get('name')
if config.get('flavor_id'):
self.flavor_id = config['flavor_id']
else:
self.flavor_id = flavor_id
self.ram = config.get('ram')
self.disk = config.get('disk')
self.vcpus = config.get('vcpus')
if config.get('ephemeral'):
self.ephemeral = config['ephemeral']
else:
self.ephemeral = ephemeral
if config.get('swap'):
self.swap = config['swap']
else:
self.swap = swap
if config.get('rxtx_factor'):
self.rxtx_factor = config['rxtx_factor']
else:
self.rxtx_factor = rxtx_factor
if config.get('is_public') is not None:
self.is_public = config['is_public']
else:
self.is_public = is_public
if config.get('metadata'):
self.metadata = config['metadata']
else:
self.metadata = metadata
else:
self.name = name
self.flavor_id = flavor_id
self.ram = ram
self.disk = disk
self.vcpus = vcpus
self.ephemeral = ephemeral
self.swap = swap
self.rxtx_factor = rxtx_factor
self.is_public = is_public
self.metadata = metadata
if not self.name or not self.ram or not self.disk or not self.vcpus:
raise Exception('The attributes name, ram, disk, and vcpus are required for FlavorSettings')
if not isinstance(self.ram, int):
raise Exception('The ram attribute must be a integer')
if not isinstance(self.disk, int):
raise Exception('The ram attribute must be a integer')
if not isinstance(self.vcpus, int):
raise Exception('The vcpus attribute must be a integer')
if self.ephemeral and not isinstance(self.ephemeral, int):
raise Exception('The ephemeral attribute must be an integer')
if self.swap and not isinstance(self.swap, int):
raise Exception('The swap attribute must be an integer')
if self.rxtx_factor and not isinstance(self.rxtx_factor, (int, float)):
raise Exception('The is_public attribute must be an integer or float')
if self.is_public and not isinstance(self.is_public, bool):
raise Exception('The is_public attribute must be a boolean')
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