99 lines
3.4 KiB
Python
99 lines
3.4 KiB
Python
# Copyright (c) 2013 OpenStack Foundation
|
|
# 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.common import cfg
|
|
from trove.common import utils
|
|
from trove.guestagent.common import operating_system
|
|
from trove.guestagent.datastore.experimental.postgresql.service.status import (
|
|
PgSqlAppStatus)
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
CONF = cfg.CONF
|
|
|
|
PGSQL_SERVICE_CANDIDATES = ("postgresql",)
|
|
|
|
|
|
class PgSqlProcess(object):
|
|
"""Mixin that manages the PgSql process."""
|
|
|
|
def start_db(self, context):
|
|
self._enable_pgsql_on_boot()
|
|
"""Start the PgSql service."""
|
|
cmd = operating_system.service_discovery(PGSQL_SERVICE_CANDIDATES)
|
|
LOG.info(
|
|
_("{guest_id}: Starting database engine with command ({command}).")
|
|
.format(
|
|
guest_id=CONF.guest_id,
|
|
command=cmd['cmd_start'],
|
|
)
|
|
)
|
|
utils.execute_with_timeout(
|
|
*cmd['cmd_start'].split(),
|
|
timeout=30
|
|
)
|
|
|
|
def _enable_pgsql_on_boot(self):
|
|
try:
|
|
pgsql_service = operating_system.service_discovery(
|
|
PGSQL_SERVICE_CANDIDATES)
|
|
utils.execute_with_timeout(pgsql_service['cmd_enable'],
|
|
shell=True)
|
|
except KeyError:
|
|
LOG.exception(_("Error enabling PostgreSQL start on boot."))
|
|
raise RuntimeError("Service is not discovered.")
|
|
|
|
def _disable_pgsql_on_boot(self):
|
|
try:
|
|
pgsql_service = operating_system.service_discovery(
|
|
PGSQL_SERVICE_CANDIDATES)
|
|
utils.execute_with_timeout(pgsql_service['cmd_disable'],
|
|
shell=True)
|
|
except KeyError:
|
|
LOG.exception(_("Error disabling PostgreSQL start on boot."))
|
|
raise RuntimeError("Service is not discovered.")
|
|
|
|
def stop_db(self, context, do_not_start_on_reboot=False):
|
|
"""Stop the PgSql service."""
|
|
if do_not_start_on_reboot:
|
|
self._disable_pgsql_on_boot()
|
|
cmd = operating_system.service_discovery(PGSQL_SERVICE_CANDIDATES)
|
|
LOG.info(
|
|
_("{guest_id}: Stopping database engine with command ({command}).")
|
|
.format(
|
|
guest_id=CONF.guest_id,
|
|
command=cmd['cmd_stop'],
|
|
)
|
|
)
|
|
utils.execute_with_timeout(
|
|
*cmd['cmd_stop'].split(),
|
|
timeout=30
|
|
)
|
|
|
|
def restart(self, context):
|
|
"""Restart the PgSql service."""
|
|
LOG.info(
|
|
_("{guest_id}: Restarting database engine.").format(
|
|
guest_id=CONF.guest_id,
|
|
)
|
|
)
|
|
try:
|
|
PgSqlAppStatus.get().begin_restart()
|
|
self.stop_db(context)
|
|
self.start_db(context)
|
|
finally:
|
|
PgSqlAppStatus.get().end_install_or_restart()
|