labthings_fastapi.notifications
===============================

.. py:module:: labthings_fastapi.notifications

.. autoapi-nested-parse::

   Handle notification of events, property, and action status changes.

   There are several kinds of "event" in the WoT vocabulary, not all of which
   are called Event, which is why this module is called `notifications`.
   In all cases, these are events that happen on an exposed Thing, and
   may need to be relayed to one or more listeners (currently via a
   WebSocket connection, though long polling may also be an option in the
   future).

   The aim at this stage (July 2023) is for a minimal working example that
   enables property changes to be fed via a websocket. Events proper should
   not be a big step thereafter.

   Currently, this code is more or less all in `websockets.py` and
   `descriptors/property.py` but it should get consolidated.



Classes
-------

.. autoapisummary::

   labthings_fastapi.notifications.Listener


Module Contents
---------------

.. py:class:: Listener

   A placeholder class for objects that listen for notifications.