67 lines
2.4 KiB
Python
67 lines
2.4 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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import datetime
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from oslo_config import cfg
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from oslo_middleware.healthcheck import pluginbase
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from octavia.db import api as db_apis
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from octavia.db import healthcheck
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CONF = cfg.CONF
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class OctaviaDBHealthcheck(pluginbase.HealthcheckBaseExtension):
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UNAVAILABLE_REASON = 'The Octavia database is unavailable.'
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last_check = None
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last_result = None
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last_message = None
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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def healthcheck(self, server_port):
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try:
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if (self.last_check is not None and
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((datetime.datetime.now() -
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self.last_check).total_seconds()) <
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CONF.api_settings.healthcheck_refresh_interval):
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result = self.last_result
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message = self.last_message
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else:
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result, message = healthcheck.check_database_connection(
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db_apis.get_session())
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self.last_check = datetime.datetime.now()
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self.last_result = result
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self.last_message = message
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if result:
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return OctaviaDBCheckResult(available=True, reason="OK")
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else:
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return OctaviaDBCheckResult(available=False,
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reason=self.UNAVAILABLE_REASON,
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details=message)
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except Exception as e:
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return OctaviaDBCheckResult(available=False,
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reason=self.UNAVAILABLE_REASON,
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details=str(e))
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class OctaviaDBCheckResult(pluginbase.HealthcheckResult):
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"""Result sub-class to provide a unique name in detail reports."""
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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