MqttMonitor/MqttProtocols.py

# -*- coding: utf-8 -*-

# Copyright (c) 2021 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing an enum defining the supported MQTT protocol versions.
"""

import enum

try:
    import paho.mqtt.client as mqtt

    class MqttProtocols(enum.IntEnum):
        """
        Class defining the supported MQTT protocol versions.
        """
        MQTTv31 = mqtt.MQTTv31
        MQTTv311 = mqtt.MQTTv311
        MQTTv5 = mqtt.MQTTv5
except ImportError:
    # define the enum with known values
    class MqttProtocols(enum.IntEnum):
        """
        Class defining the supported MQTT protocol versions.
        """
        MQTTv31 = 3
        MQTTv311 = 4
        MQTTv5 = 5