Add support for attribute caching to the lawn_mower platform (#106335)

homeassistant/components/lawn_mower/__init__.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 
 from datetime import timedelta
 import logging
-from typing import final
+from typing import TYPE_CHECKING, final
 
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
@@ -24,6 +24,12 @@ from .const import (
     LawnMowerEntityFeature,
 )
 
+if TYPE_CHECKING:
+    from functools import cached_property
+else:
+    from homeassistant.backports.functools import cached_property
+
+
 SCAN_INTERVAL = timedelta(seconds=60)
 
 _LOGGER = logging.getLogger(__name__)
@@ -68,7 +74,13 @@ class LawnMowerEntityEntityDescription(EntityDescription, frozen_or_thawed=True)
     """A class that describes lawn mower entities."""
 
 
-class LawnMowerEntity(Entity):
+CACHED_PROPERTIES_WITH_ATTR_ = {
+    "activity",
+    "supported_features",
+}
+
+
+class LawnMowerEntity(Entity, cached_properties=CACHED_PROPERTIES_WITH_ATTR_):
     """Base class for lawn mower entities."""
 
     entity_description: LawnMowerEntityEntityDescription
@@ -83,12 +95,12 @@ class LawnMowerEntity(Entity):
             return None
         return str(activity)
 
-    @property
+    @cached_property
     def activity(self) -> LawnMowerActivity | None:
         """Return the current lawn mower activity."""
         return self._attr_activity
 
-    @property
+    @cached_property
     def supported_features(self) -> LawnMowerEntityFeature:
         """Flag lawn mower features that are supported."""
         return self._attr_supported_features