Add an aiomqtt based MQTT session module #366
Merged
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Add an aiomqtt based MQTT session module. This is based on #364 with some additional unit tests and support for retries.
The session is created by invoking
create_mqtt_session
. A caller may subscribe to a topic, and the session keeps track of which callbacks to invoke for each topic. The client is run as a background task that will run until shutdown. Once connected, the client will wait for messages to be received in a loop. If the connection is lost, the client will be re-created and reconnected. There is backoff to avoid spamming the broker with connection attempts. The clientwill automatically re-establish any subscriptions when the connection is re-established.
It is very difficult to exercise the failure cases with aiomqtt, so these will need to be exercised manually. This does not contain any roborock specific information.