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# Copyright 2013 Hewlett-Packard Development Company, L.P.
# Copyright 2014 Mirantis Inc.
# 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 re
from oslo_log import log as logging
from trove.common.i18n import _
from trove.guestagent.datastore.mysql.service import MySqlApp
from trove.guestagent.datastore.mysql_common.service import ADMIN_USER_NAME
from trove.guestagent.strategies.backup import base
LOG = logging.getLogger(__name__)
class MySQLDump(base.BackupRunner):
"""Implementation of Backup Strategy for MySQLDump."""
__strategy_name__ = 'mysqldump'
@property
def cmd(self):
user_and_pass = (
' --password=%(password)s -u %(user)s '
'2>/tmp/mysqldump.log' %
{'password': MySqlApp.get_auth_password(),
'user': ADMIN_USER_NAME})
cmd = ('mysqldump'
' --all-databases'
' %(extra_opts)s'
' --opt' + user_and_pass)
return cmd + self.zip_cmd + self.encrypt_cmd
def check_process(self):
"""Check the output from mysqldump ignoring 'Warning'."""
LOG.debug('Checking mysqldump process output.')
with open('/tmp/mysqldump.log', 'r') as backup_log:
output = backup_log.read()
if not output:
return True
LOG.debug(output)
for line in output.splitlines():
if not re.search('Warning', line.strip()):
LOG.error("Mysqldump did not complete successfully.")
return False
return True
class InnoBackupEx(base.BackupRunner):
"""Implementation of Backup Strategy for InnoBackupEx."""
__strategy_name__ = 'innobackupex'
@property
def user_and_pass(self):
return (' --user=%(user)s --password=%(password)s --host=127.0.0.1 ' %
{'user': ADMIN_USER_NAME,
'password': MySqlApp.get_auth_password()})
@property
def cmd(self):
cmd = ('sudo innobackupex'
' --stream=xbstream'
' %(extra_opts)s ' +
self.user_and_pass +
MySqlApp.get_data_dir() +
' 2>/tmp/innobackupex.log'
)
return cmd + self.zip_cmd + self.encrypt_cmd
def check_process(self):
"""Check the output from innobackupex for 'completed OK!'."""
LOG.debug('Checking innobackupex process output.')
with open('/tmp/innobackupex.log', 'r') as backup_log:
output = backup_log.read()
if not output:
LOG.error("Innobackupex log file empty.")
return False
LOG.debug(output)
last_line = output.splitlines()[-1].strip()
if not re.search('completed OK!', last_line):
LOG.error("Innobackupex did not complete successfully.")
return False
return True
def metadata(self):
LOG.debug('Getting metadata from backup.')
meta = {}
lsn = re.compile(r"The latest check point \(for incremental\): "
r"'(\d+)'")
with open('/tmp/innobackupex.log', 'r') as backup_log:
output = backup_log.read()
match = lsn.search(output)
if match:
meta = {'lsn': match.group(1)}
LOG.info("Metadata for backup: %s.", str(meta))
return meta
@property
def filename(self):
return '%s.xbstream' % self.base_filename
class InnoBackupExIncremental(InnoBackupEx):
"""InnoBackupEx incremental backup."""
def __init__(self, *args, **kwargs):
if not kwargs.get('lsn'):
raise AttributeError(_('lsn attribute missing, bad parent?'))
super(InnoBackupExIncremental, self).__init__(*args, **kwargs)
self.parent_location = kwargs.get('parent_location')
self.parent_checksum = kwargs.get('parent_checksum')
@property
def cmd(self):
cmd = ('sudo innobackupex'
' --stream=xbstream'
' --incremental'
' --incremental-lsn=%(lsn)s'
' %(extra_opts)s ' +
self.user_and_pass +
MySqlApp.get_data_dir() +
' 2>/tmp/innobackupex.log')
return cmd + self.zip_cmd + self.encrypt_cmd
def metadata(self):
_meta = super(InnoBackupExIncremental, self).metadata()
_meta.update({
'parent_location': self.parent_location,
'parent_checksum': self.parent_checksum,
})
return _meta
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