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44 lines
1.5 KiB
Python
44 lines
1.5 KiB
Python
# -*- coding: utf-8 -*-
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# BITE - A Basic/IoT/Example
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# Copyright (C) 2020 Daniele Viganò <daniele@vigano.me>
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#
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# BITE is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# BITE is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import socket
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import paho.mqtt.client as mqtt
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from health_check.backends import BaseHealthCheckBackend
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from health_check.exceptions import ServiceUnavailable
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from django.conf import settings
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MQTT_HOST = settings.MQTT_BROKER['HOST']
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MQTT_PORT = int(settings.MQTT_BROKER['PORT'])
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class MQTTHealthCheck(BaseHealthCheckBackend):
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critical_service = True
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def check_status(self):
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client = mqtt.Client(client_id="django-hc")
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try:
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client.connect(MQTT_HOST, port=MQTT_PORT)
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client.disconnect()
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except (socket.gaierror, ConnectionRefusedError):
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self.add_error(ServiceUnavailable("Connection refused"))
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def identifier(self):
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return self.__class__.__name__
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