aa1d4d2246
Significant changes: * Using docker image to install datastore. * Datastore image is common to different datastores. * Using backup docker image to do backup and restore. * Support MariaDB replication * Set most of the functional jobs as non-voting as nested virtualization is not supported in CI. Change-Id: Ia9c97a63a961eebc336b70d28dc77638144c1834
49 lines
1.5 KiB
Python
49 lines
1.5 KiB
Python
# Copyright 2020 Catalyst Cloud
|
|
#
|
|
# 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 abc
|
|
|
|
|
|
class Storage(object):
|
|
"""Base class for Storage driver implementation."""
|
|
|
|
@abc.abstractmethod
|
|
def save(self, stream, metadata=None, **kwargs):
|
|
"""Persist information from the stream.
|
|
|
|
Should return the new backup checkshum and location.
|
|
"""
|
|
|
|
@abc.abstractmethod
|
|
def load(self, location, backup_checksum, **kwargs):
|
|
"""Load a stream from the data location.
|
|
|
|
Should return an object that provides "read" method.
|
|
"""
|
|
|
|
def load_metadata(self, parent_location, parent_checksum):
|
|
"""Load metadata for a parent backup.
|
|
|
|
It's up to the storage driver to decide how to implement this function.
|
|
"""
|
|
return {}
|
|
|
|
def is_incremental_backup(self, location):
|
|
"""Check if the location is an incremental backup."""
|
|
return False
|
|
|
|
@abc.abstractmethod
|
|
def get_backup_lsn(self, location):
|
|
"""Get the backup LSN."""
|