# 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. from oslo_config import cfg from oslo_log import log as logging from backup.drivers import mysql_base LOG = logging.getLogger(__name__) CONF = cfg.CONF class MariaBackup(mysql_base.MySQLBaseRunner): """Implementation of Backup and Restore using mariabackup.""" backup_log = '/tmp/mariabackup.log' restore_log = '/tmp/mbstream_extract.log' restore_cmd = ('mbstream -x -C %(restore_location)s 2>' + restore_log) prepare_cmd = '' @property def cmd(self): cmd = ('mariabackup --backup --stream=xbstream ' + self.user_and_pass + ' 2>' + self.backup_log) return cmd + self.zip_cmd + self.encrypt_cmd def check_restore_process(self): LOG.debug('Checking return code of mbstream restore process.') return_code = self.process.wait() if return_code != 0: LOG.error('mbstream exited with %s', return_code) return False return True class MariaBackupIncremental(MariaBackup): """Incremental backup and restore using mariabackup.""" incremental_prep = ('mariabackup --prepare ' '--target-dir=%(restore_location)s ' '%(incremental_args)s ' '2>/tmp/innoprepare.log') def __init__(self, *args, **kwargs): if not kwargs.get('lsn'): raise AttributeError('lsn attribute missing') self.parent_location = kwargs.pop('parent_location', '') self.parent_checksum = kwargs.pop('parent_checksum', '') self.restore_content_length = 0 super(MariaBackupIncremental, self).__init__(*args, **kwargs) @property def cmd(self): cmd = ( 'mariabackup --backup --stream=xbstream' ' --incremental-lsn=%(lsn)s ' + self.user_and_pass + ' 2>' + self.backup_log ) return cmd + self.zip_cmd + self.encrypt_cmd def get_metadata(self): meta = super(MariaBackupIncremental, self).get_metadata() meta.update({ 'parent_location': self.parent_location, 'parent_checksum': self.parent_checksum, }) return meta def run_restore(self): """Run incremental restore.""" LOG.debug('Running incremental restore') self.incremental_restore(self.location, self.checksum) return self.restore_content_length