38 lines
1.3 KiB
Python
38 lines
1.3 KiB
Python
# Copyright 2020 Red Hat, Inc. 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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from oslo_log import log as logging
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from octavia.i18n import _
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LOG = logging.getLogger(__name__)
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def check_database_connection(session):
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"""This is a simple database connection check function.
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It will do a simple no-op query (low overhead) against the sqlalchemy
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session passed in.
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:param session: A Sql Alchemy database session.
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:returns: True if the connection check is successful, False if not.
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"""
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try:
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session.execute('SELECT 1;')
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return True, None
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except Exception as e:
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message = _('Database health check failed due to: {err}.').format(
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err=str(e))
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LOG.error(message)
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return False, message
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