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# Copyright 2015 Tesora, 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.
#
from oslo_log import log as logging
from trove.guestagent.datastore.mysql_common import service as mysql_service
from trove.guestagent.utils import mysql as mysql_util
from trove.common import utils
from trove.common import exception
LOG = logging.getLogger(__name__)
class MariaDBApp(mysql_service.BaseMySqlApp):
def __init__(self, status, docker_client):
super(MariaDBApp, self).__init__(status, docker_client)
def wait_for_slave_status(self, status, client, max_time):
def verify_slave_status():
actual_status = client.execute(
'SHOW GLOBAL STATUS like "Slave_running";').first()[1]
return actual_status.upper() == status.upper()
LOG.debug("Waiting for slave status %s with timeout %s",
status, max_time)
try:
utils.poll_until(verify_slave_status, sleep_time=3,
time_out=max_time)
LOG.info("Replication status: %s.", status)
except exception.PollTimeOut:
raise RuntimeError(
"Replication is not %(status)s after %(max)d seconds." %
{'status': status.lower(), 'max': max_time})
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_Server_Id'] or None
def _get_gtid_executed(self):
with mysql_util.SqlClient(self.get_engine()) as client:
return client.execute('SELECT @@global.gtid_binlog_pos').first()[0]
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 uuid_set[1] == master_UUID:
last_txn_id = uuid_set[-1]
break
return master_UUID, int(last_txn_id)
def get_latest_txn_id(self):
return self._get_gtid_executed()
def wait_for_txn(self, txn):
cmd = "SELECT MASTER_GTID_WAIT('%s')" % txn
with mysql_util.SqlClient(self.get_engine()) as client:
client.execute(cmd)
class MariaDBRootAccess(mysql_service.BaseMySqlRootAccess):
def __init__(self, app):
super(MariaDBRootAccess, self).__init__(app)
class MariaDBAdmin(mysql_service.BaseMySqlAdmin):
def __init__(self, app):
root_access = MariaDBRootAccess(app)
super(MariaDBAdmin, self).__init__(root_access, app)
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