fix(coordinator): kurze Aussetzer machen die Lampe nicht unbedienbar

custom_components/ninlight/coordinator.py

@@ -21,7 +21,7 @@ from .api import (
     NinlightError,
     NinlightRequestError,
 )
-from .const import CONF_SCAN_INTERVAL, DEFAULT_SCAN_INTERVAL, DOMAIN
+from .const import CONF_SCAN_INTERVAL, DEFAULT_SCAN_INTERVAL, DOMAIN, MAX_POLL_FAILURES
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -58,6 +58,8 @@ class NinlightCoordinator(DataUpdateCoordinator[NinlightData]):
         self.lock = asyncio.Lock()
         # While a firmware update runs, the update entity watches the lamp itself.
         self.ota_in_progress = False
+        # Consecutive poll failures; a short outage should not flip the lamp unavailable.
+        self._consecutive_poll_failures = 0
 
     async def _async_update_data(self) -> NinlightData:
         if self.ota_in_progress and self.data is not None:
@@ -69,7 +71,18 @@ class NinlightCoordinator(DataUpdateCoordinator[NinlightData]):
         except NinlightAuthError as err:
             raise ConfigEntryAuthFailed(f"{self.client.host}: token rejected") from err
         except NinlightError as err:
+            self._consecutive_poll_failures += 1
+            if self.data is not None and self._consecutive_poll_failures < MAX_POLL_FAILURES:
+                _LOGGER.debug(
+                    "%s: poll failed (%d/%d), keeping last known state: %s",
+                    self.client.host,
+                    self._consecutive_poll_failures,
+                    MAX_POLL_FAILURES,
+                    err,
+                )
+                return self.data
             raise UpdateFailed(f"{self.client.host}: {err}") from err
+        self._consecutive_poll_failures = 0
         return NinlightData(state, info)
 
     async def async_call[T](self, action: Callable[[NinlightClient], Awaitable[T]]) -> T:
@@ -100,4 +113,5 @@ class NinlightCoordinator(DataUpdateCoordinator[NinlightData]):
     async def async_set_state(self, **fields: Any) -> None:
         """Write and adopt the lamp's complete answer directly - no debounced refresh."""
         state = await self.async_call(lambda client: client.set_state(**fields))
+        self._consecutive_poll_failures = 0
         self.async_set_updated_data(NinlightData(state, self.data.info))