8910d265d6
* Remove async_remove_listener
This avoids the ambuigity as to what happens if same callback is added multiple times.
* Keep track of a context for each listener
This allow a update coordinator to adapt what data to request on update from the backing service based on which entities are enabled.
* Clone list before calling callbacks
The callbacks can end up unregistering and modifying the dict while iterating.
* Only yield actual values
* Add a test for update context
* Factor out iteration of _listeners to helper
* Verify context is passed to coordinator
* Switch to Any as type instead of object
* Remove function which use was dropped earliers
The use was removed in 8bee25c938
28 lines
913 B
Python
28 lines
913 B
Python
"""Helpers for WLED."""
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from wled import WLEDConnectionError, WLEDError
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from homeassistant.exceptions import HomeAssistantError
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def wled_exception_handler(func):
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"""Decorate WLED calls to handle WLED exceptions.
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A decorator that wraps the passed in function, catches WLED errors,
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and handles the availability of the device in the data coordinator.
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"""
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async def handler(self, *args, **kwargs):
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try:
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await func(self, *args, **kwargs)
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self.coordinator.async_update_listeners()
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except WLEDConnectionError as error:
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self.coordinator.last_update_success = False
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self.coordinator.async_update_listeners()
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raise HomeAssistantError("Error communicating with WLED API") from error
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except WLEDError as error:
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raise HomeAssistantError("Invalid response from WLED API") from error
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return handler
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