Add an RSSI sensor to the LIFX integration (#80993)

homeassistant/components/lifx/sensor.py

@@ -0,0 +1,74 @@
+"""Sensors for LIFX lights."""
+from __future__ import annotations
+
+from datetime import timedelta
+
+from homeassistant.components.sensor import (
+    SensorDeviceClass,
+    SensorEntity,
+    SensorEntityDescription,
+    SensorStateClass,
+)
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.helpers.entity import EntityCategory
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from .const import ATTR_RSSI, DOMAIN
+from .coordinator import LIFXSensorUpdateCoordinator, LIFXUpdateCoordinator
+from .entity import LIFXSensorEntity
+
+SCAN_INTERVAL = timedelta(seconds=30)
+
+RSSI_SENSOR = SensorEntityDescription(
+    key=ATTR_RSSI,
+    name="RSSI",
+    device_class=SensorDeviceClass.SIGNAL_STRENGTH,
+    entity_category=EntityCategory.DIAGNOSTIC,
+    state_class=SensorStateClass.MEASUREMENT,
+    entity_registry_enabled_default=False,
+)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
+) -> None:
+    """Set up LIFX sensor from config entry."""
+    coordinator: LIFXUpdateCoordinator = hass.data[DOMAIN][entry.entry_id]
+    async_add_entities([LIFXRssiSensor(coordinator.sensor_coordinator, RSSI_SENSOR)])
+
+
+class LIFXRssiSensor(LIFXSensorEntity, SensorEntity):
+    """LIFX RSSI sensor."""
+
+    _attr_has_entity_name = True
+
+    def __init__(
+        self,
+        coordinator: LIFXSensorUpdateCoordinator,
+        description: SensorEntityDescription,
+    ) -> None:
+        """Initialise the RSSI sensor."""
+
+        super().__init__(coordinator)
+        self.entity_description = description
+        self._attr_name = description.name
+        self._attr_unique_id = f"{coordinator.parent.serial_number}_{description.key}"
+        self._attr_native_unit_of_measurement = coordinator.rssi_uom
+
+    @callback
+    def _handle_coordinator_update(self) -> None:
+        """Handle updated data from the coordinator."""
+        self._async_update_attrs()
+        super()._handle_coordinator_update()
+
+    @callback
+    def _async_update_attrs(self) -> None:
+        """Handle coordinator updates."""
+        self._attr_native_value = self.coordinator.rssi
+
+    @callback
+    async def async_added_to_hass(self) -> None:
+        """Enable RSSI updates."""
+        self.async_on_remove(self.coordinator.async_enable_rssi_updates())
+        return await super().async_added_to_hass()