107 lines
3.8 KiB
Python
107 lines
3.8 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.guestagent.common import operating_system
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from trove.guestagent.datastore.galera_common import service as galera_service
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from trove.guestagent.datastore.mysql_common import service as mysql_service
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LOG = logging.getLogger(__name__)
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class MariaDBApp(galera_service.GaleraApp):
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OS = operating_system.get_os()
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def __init__(self, status):
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super(MariaDBApp, self).__init__(
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status, mysql_service.BaseLocalSqlClient,
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mysql_service.BaseKeepAliveConnection)
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@property
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def service_candidates(self):
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service_candidates = super(MariaDBApp, self).service_candidates
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return {
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operating_system.DEBIAN: ["mariadb"] + service_candidates,
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operating_system.REDHAT: ["mariadb"],
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operating_system.SUSE: service_candidates
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}[self.OS]
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@property
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def mysql_service(self):
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result = super(MariaDBApp, self).mysql_service
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if result['type'] == 'sysvinit':
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result['cmd_bootstrap_galera_cluster'] = (
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"sudo service %s bootstrap"
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% result['service'])
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elif result['type'] == 'systemd':
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# TODO(mwj 2016/01/28): determine RHEL start for MariaDB Cluster
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result['cmd_bootstrap_galera_cluster'] = (
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"sudo systemctl start %s@bootstrap.service"
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% result['service'])
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return result
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@property
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def cluster_configuration(self):
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return self.configuration_manager.get_value('galera')
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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_Server_Id'] 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_binlog_pos').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[1] == master_UUID:
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last_txn_id = uuid_set[-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 MASTER_GTID_WAIT('%s')" % txn)
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class MariaDBRootAccess(mysql_service.BaseMySqlRootAccess):
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def __init__(self):
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super(MariaDBRootAccess, self).__init__(
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mysql_service.BaseLocalSqlClient,
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MariaDBApp(mysql_service.BaseMySqlAppStatus.get()))
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class MariaDBAdmin(mysql_service.BaseMySqlAdmin):
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def __init__(self):
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super(MariaDBAdmin, self).__init__(
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mysql_service.BaseLocalSqlClient, MariaDBRootAccess(),
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MariaDBApp)
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