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# 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 semantic_version
from trove.common import cfg
from trove.guestagent.datastore.mysql_common import service
from trove.guestagent.utils import mysql as mysql_util
CONF = cfg.CONF
class MySqlAppStatus(service.BaseMySqlAppStatus):
def __init__(self, docker_client):
super(MySqlAppStatus, self).__init__(docker_client)
class MySqlApp(service.BaseMySqlApp):
def __init__(self, status, docker_client):
super(MySqlApp, self).__init__(status, docker_client)
def _get_gtid_executed(self):
with mysql_util.SqlClient(self.get_engine()) as client:
return client.execute('SELECT @@global.gtid_executed').first()[0]
def _get_slave_status(self):
with mysql_util.SqlClient(self.get_engine()) as client:
return client.execute('SHOW SLAVE STATUS').first()
def _get_master_UUID(self):
slave_status = self._get_slave_status()
return slave_status and slave_status['Master_UUID'] or None
def get_latest_txn_id(self):
return self._get_gtid_executed()
def get_last_txn(self):
master_UUID = self._get_master_UUID()
last_txn_id = '0'
gtid_executed = self._get_gtid_executed()
for gtid_set in gtid_executed.split(','):
uuid_set = gtid_set.split(':')
if str(uuid_set[0]) == str(master_UUID):
last_txn_id = uuid_set[-1].split('-')[-1]
break
return master_UUID, int(last_txn_id)
def wait_for_txn(self, txn):
with mysql_util.SqlClient(self.get_engine()) as client:
client.execute("SELECT WAIT_UNTIL_SQL_THREAD_AFTER_GTIDS('%s')"
% txn)
def get_backup_image(self):
"""Get the actual container image based on datastore version.
For example, this method converts openstacktrove/db-backup-mysql:1.0.0
to openstacktrove/db-backup-mysql5.7:1.0.0
"""
image = cfg.get_configuration_property('backup_docker_image')
name, tag = image.split(':', 1)
# Get minor version
cur_ver = semantic_version.Version.coerce(CONF.datastore_version)
minor_ver = f"{cur_ver.major}.{cur_ver.minor}"
return f"{name}{minor_ver}:{tag}"
def get_backup_strategy(self):
"""Get backup strategy.
innobackupex was removed in Percona XtraBackup 8.0, use xtrabackup
instead.
"""
strategy = cfg.get_configuration_property('backup_strategy')
mysql_8 = semantic_version.Version('8.0.0')
cur_ver = semantic_version.Version.coerce(CONF.datastore_version)
if cur_ver >= mysql_8:
strategy = 'xtrabackup'
return strategy
class MySqlRootAccess(service.BaseMySqlRootAccess):
def __init__(self, app):
super(MySqlRootAccess, self).__init__(app)
class MySqlAdmin(service.BaseMySqlAdmin):
def __init__(self, app):
root_access = MySqlRootAccess(app)
super(MySqlAdmin, self).__init__(root_access, app)
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