108 lines
4.1 KiB
Python
108 lines
4.1 KiB
Python
# (c) Copyright 2014,2015 Hewlett-Packard Development Company, L.P.
|
|
#
|
|
# 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.
|
|
|
|
|
|
"""
|
|
Freezer Backup modes related functions
|
|
"""
|
|
|
|
from oslo_config import cfg
|
|
from oslo_log import log
|
|
|
|
from freezer.utils import utils
|
|
|
|
CONF = cfg.CONF
|
|
LOG = log.getLogger(__name__)
|
|
|
|
|
|
class BackupOs(object):
|
|
|
|
def __init__(self, client_manager, container, storage):
|
|
"""
|
|
|
|
:param client_manager:
|
|
:param container:
|
|
:param storage:
|
|
:type storage: freezer.swift.SwiftStorage
|
|
:return:
|
|
"""
|
|
self.client_manager = client_manager
|
|
self.container = container
|
|
self.storage = storage
|
|
|
|
def backup_cinder_by_glance(self, volume_id):
|
|
"""
|
|
Implements cinder backup:
|
|
1) Gets a stream of the image from glance
|
|
2) Stores resulted image to the swift as multipart object
|
|
|
|
:param volume_id: id of volume for backup
|
|
"""
|
|
client_manager = self.client_manager
|
|
cinder = client_manager.get_cinder()
|
|
|
|
volume = cinder.volumes.get(volume_id)
|
|
LOG.debug("Creation temporary snapshot")
|
|
snapshot = client_manager.provide_snapshot(
|
|
volume, "backup_snapshot_for_volume_%s" % volume_id)
|
|
LOG.debug("Creation temporary volume")
|
|
copied_volume = client_manager.do_copy_volume(snapshot)
|
|
LOG.debug("Creation temporary glance image")
|
|
image = client_manager.make_glance_image(copied_volume.id,
|
|
copied_volume)
|
|
LOG.debug("Download temporary glance image {0}".format(image.id))
|
|
stream = client_manager.download_image(image)
|
|
package = "{0}/{1}".format(volume_id, utils.DateTime.now().timestamp)
|
|
LOG.debug("Saving image to {0}".format(self.storage.type))
|
|
if volume.name is None:
|
|
name = volume_id
|
|
else:
|
|
name = volume.name
|
|
headers = {'x-object-meta-length': str(len(stream)),
|
|
'volume_name': name,
|
|
'availability_zone': volume.availability_zone
|
|
}
|
|
attachments = volume._info['attachments']
|
|
if attachments:
|
|
headers['server'] = attachments[0]['server_id']
|
|
self.storage.add_stream(stream, package, headers=headers)
|
|
LOG.debug("Deleting temporary snapshot")
|
|
client_manager.clean_snapshot(snapshot)
|
|
LOG.debug("Deleting temporary volume")
|
|
cinder.volumes.delete(copied_volume)
|
|
LOG.debug("Deleting temporary image")
|
|
client_manager.get_glance().images.delete(image.id)
|
|
|
|
def backup_cinder(self, volume_id, name=None, description=None,
|
|
incremental=False):
|
|
client_manager = self.client_manager
|
|
cinder = client_manager.get_cinder()
|
|
container = "{0}/{1}/{2}".format(self.container, volume_id,
|
|
utils.DateTime.now().timestamp)
|
|
if incremental:
|
|
search_opts = {
|
|
'volume_id': volume_id,
|
|
'status': 'available'
|
|
}
|
|
backups = cinder.backups.list(search_opts=search_opts)
|
|
if len(backups) <= 0:
|
|
cinder.backups.create(volume_id, container, name, description,
|
|
incremental=False, force=True)
|
|
else:
|
|
cinder.backups.create(volume_id, container, name, description,
|
|
incremental=incremental, force=True)
|
|
else:
|
|
cinder.backups.create(volume_id, container, name, description,
|
|
incremental=incremental, force=True)
|