86 lines
2.8 KiB
Python
86 lines
2.8 KiB
Python
# Copyright 2015 Tesora, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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from oslo_log import log as logging
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from trove.common.i18n import _
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from trove.guestagent.datastore.mysql_common import service
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LOG = logging.getLogger(__name__)
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class KeepAliveConnection(service.BaseKeepAliveConnection):
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pass
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class MySqlAppStatus(service.BaseMySqlAppStatus):
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pass
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class LocalSqlClient(service.BaseLocalSqlClient):
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pass
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class MySqlApp(service.BaseMySqlApp):
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def __init__(self, status):
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super(MySqlApp, self).__init__(status, LocalSqlClient,
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KeepAliveConnection)
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def _get_slave_status(self):
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with self.local_sql_client(self.get_engine()) as client:
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return client.execute('SHOW SLAVE STATUS').first()
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def _get_master_UUID(self):
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slave_status = self._get_slave_status()
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return slave_status and slave_status['Master_UUID'] or None
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def _get_gtid_executed(self):
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with self.local_sql_client(self.get_engine()) as client:
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return client.execute('SELECT @@global.gtid_executed').first()[0]
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def get_last_txn(self):
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master_UUID = self._get_master_UUID()
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last_txn_id = '0'
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gtid_executed = self._get_gtid_executed()
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for gtid_set in gtid_executed.split(','):
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uuid_set = gtid_set.split(':')
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if uuid_set[0] == master_UUID:
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last_txn_id = uuid_set[-1].split('-')[-1]
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break
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return master_UUID, int(last_txn_id)
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def get_latest_txn_id(self):
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LOG.info(_("Retrieving latest txn id."))
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return self._get_gtid_executed()
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def wait_for_txn(self, txn):
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LOG.info(_("Waiting on txn '%s'."), txn)
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with self.local_sql_client(self.get_engine()) as client:
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client.execute("SELECT WAIT_UNTIL_SQL_THREAD_AFTER_GTIDS('%s')"
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% txn)
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class MySqlRootAccess(service.BaseMySqlRootAccess):
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def __init__(self):
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super(MySqlRootAccess, self).__init__(LocalSqlClient,
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MySqlApp(MySqlAppStatus.get()))
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class MySqlAdmin(service.BaseMySqlAdmin):
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def __init__(self):
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super(MySqlAdmin, self).__init__(LocalSqlClient, MySqlRootAccess(),
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MySqlApp)
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