88 lines
2.9 KiB
Python
88 lines
2.9 KiB
Python
# Copyright 2020 Catalyst Cloud
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from oslo_config import cfg
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from oslo_log import log as logging
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from backup.drivers import mysql_base
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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class MariaBackup(mysql_base.MySQLBaseRunner):
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"""Implementation of Backup and Restore using mariabackup."""
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backup_log = '/tmp/mariabackup.log'
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restore_log = '/tmp/mbstream_extract.log'
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restore_cmd = ('mbstream -x -C %(restore_location)s 2>' + restore_log)
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prepare_cmd = ''
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@property
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def cmd(self):
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cmd = ('mariabackup --backup --stream=xbstream ' +
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self.user_and_pass + ' 2>' + self.backup_log)
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return cmd + self.zip_cmd + self.encrypt_cmd
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def check_restore_process(self):
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LOG.debug('Checking return code of mbstream restore process.')
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return_code = self.process.wait()
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if return_code != 0:
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LOG.error('mbstream exited with %s', return_code)
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return False
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return True
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class MariaBackupIncremental(MariaBackup):
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"""Incremental backup and restore using mariabackup."""
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incremental_prep = ('mariabackup --prepare '
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'--target-dir=%(restore_location)s '
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'%(incremental_args)s '
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'2>/tmp/innoprepare.log')
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def __init__(self, *args, **kwargs):
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if not kwargs.get('lsn'):
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raise AttributeError('lsn attribute missing')
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self.parent_location = kwargs.pop('parent_location', '')
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self.parent_checksum = kwargs.pop('parent_checksum', '')
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self.restore_content_length = 0
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super(MariaBackupIncremental, self).__init__(*args, **kwargs)
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@property
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def cmd(self):
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cmd = (
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'mariabackup --backup --stream=xbstream'
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' --incremental-lsn=%(lsn)s ' +
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self.user_and_pass +
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' 2>' +
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self.backup_log
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)
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return cmd + self.zip_cmd + self.encrypt_cmd
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def get_metadata(self):
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meta = super(MariaBackupIncremental, self).get_metadata()
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meta.update({
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'parent_location': self.parent_location,
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'parent_checksum': self.parent_checksum,
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})
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return meta
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def run_restore(self):
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"""Run incremental restore."""
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LOG.debug('Running incremental restore')
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self.incremental_restore(self.location, self.checksum)
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return self.restore_content_length
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