59 lines
2.2 KiB
Python
59 lines
2.2 KiB
Python
# Copyright 2017 FUJITSU LIMITED
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# Copyright 2018 OP5 AB
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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 falcon
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from monasca_api.api import healthcheck_api
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from monasca_api.healthcheck import alarms_db_check
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from monasca_api.healthcheck import kafka_check
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from monasca_api.healthcheck import metrics_db_check
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from monasca_api.v2.reference import helpers
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class HealthChecks(healthcheck_api.HealthCheckApi):
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CACHE_CONTROL = ['must-revalidate', 'no-cache', 'no-store']
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HEALTHY_CODE_GET = falcon.HTTP_OK
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HEALTHY_CODE_HEAD = falcon.HTTP_NO_CONTENT
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NOT_HEALTHY_CODE = falcon.HTTP_SERVICE_UNAVAILABLE
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def __init__(self):
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super(HealthChecks, self).__init__()
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self._kafka_check = kafka_check.KafkaHealthCheck()
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self._alarm_db_check = alarms_db_check.AlarmsDbHealthCheck()
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self._metrics_db_check = metrics_db_check.MetricsDbCheck()
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def on_head(self, req, res):
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res.status = self.HEALTHY_CODE_HEAD
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res.cache_control = self.CACHE_CONTROL
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def on_get(self, req, res):
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helpers.validate_authorization(req, ['api:healthcheck'])
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kafka_result = self._kafka_check.health_check()
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alarms_db_result = self._alarm_db_check.health_check()
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metrics_db_result = self._metrics_db_check.health_check()
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status_data = {
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'kafka': kafka_result.message,
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'alarms_database': alarms_db_result.message,
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'metrics_database': metrics_db_result.message
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}
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health = (kafka_result.healthy and alarms_db_result.healthy and
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metrics_db_result.healthy)
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res.status = (self.HEALTHY_CODE_GET
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if health else self.NOT_HEALTHY_CODE)
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res.cache_control = self.CACHE_CONTROL
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res.body = helpers.to_json(status_data)
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