Restore remote discovered devices between remote scanner restarts

homeassistant/components/bluetooth/__init__.py

@@ -71,9 +71,14 @@
 )
 from .manager import BluetoothManager
 from .match import BluetoothCallbackMatcher, IntegrationMatcher
-from .models import BluetoothCallback, BluetoothChange, BluetoothScanningMode
+from .models import (
+    BluetoothCallback,
+    BluetoothChange,
+    BluetoothScanningMode,
+    HaBluetoothConnector,
+)
 from .scanner import HaScanner, ScannerStartError
-from .wrappers import HaBluetoothConnector
+from .storage import BluetoothStorage
 
 if TYPE_CHECKING:
     from homeassistant.helpers.typing import ConfigType
@@ -158,7 +163,11 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     integration_matcher = IntegrationMatcher(await async_get_bluetooth(hass))
     integration_matcher.async_setup()
     bluetooth_adapters = get_adapters()
-    manager = BluetoothManager(hass, integration_matcher, bluetooth_adapters)
+    bluetooth_storage = BluetoothStorage(hass)
+    await bluetooth_storage.async_setup()
+    manager = BluetoothManager(
+        hass, integration_matcher, bluetooth_adapters, bluetooth_storage
+    )
     await manager.async_setup()
     hass.bus.async_listen_once(EVENT_HOMEASSISTANT_STOP, manager.async_stop)
     hass.data[DATA_MANAGER] = models.MANAGER = manager

homeassistant/components/bluetooth/base_scanner.py

@@ -11,13 +11,21 @@
 from bleak.backends.device import BLEDevice
 from bleak.backends.scanner import AdvertisementData
 from bleak_retry_connector import NO_RSSI_VALUE
-from bluetooth_adapters import adapter_human_name
+from bluetooth_adapters import DiscoveredDeviceAdvertisementData, adapter_human_name
 from home_assistant_bluetooth import BluetoothServiceInfoBleak
 
-from homeassistant.core import CALLBACK_TYPE, HomeAssistant, callback as hass_callback
+from homeassistant.const import EVENT_HOMEASSISTANT_STOP
+from homeassistant.core import (
+    CALLBACK_TYPE,
+    Event,
+    HomeAssistant,
+    callback as hass_callback,
+)
 from homeassistant.helpers.event import async_track_time_interval
+import homeassistant.util.dt as dt_util
 from homeassistant.util.dt import monotonic_time_coarse
 
+from . import models
 from .const import (
     CONNECTABLE_FALLBACK_MAXIMUM_STALE_ADVERTISEMENT_SECONDS,
     FALLBACK_MAXIMUM_STALE_ADVERTISEMENT_SECONDS,
@@ -30,12 +38,22 @@
 class BaseHaScanner(ABC):
     """Base class for Ha Scanners."""
 
-    __slots__ = ("hass", "source", "_connecting", "name", "scanning")
+    __slots__ = (
+        "hass",
+        "connectable",
+        "source",
+        "connector",
+        "_connecting",
+        "name",
+        "scanning",
+    )
 
     def __init__(self, hass: HomeAssistant, source: str, adapter: str) -> None:
         """Initialize the scanner."""
         self.hass = hass
+        self.connectable = False
         self.source = source
+        self.connector: HaBluetoothConnector | None = None
         self._connecting = 0
         self.name = adapter_human_name(adapter, source) if adapter != source else source
         self.scanning = True
@@ -87,10 +105,9 @@ class BaseHaRemoteScanner(BaseHaScanner):
         "_new_info_callback",
         "_discovered_device_advertisement_datas",
         "_discovered_device_timestamps",
-        "_connector",
-        "_connectable",
         "_details",
         "_expire_seconds",
+        "_storage",
     )
 
     def __init__(
@@ -109,22 +126,54 @@ def __init__(
             str, tuple[BLEDevice, AdvertisementData]
         ] = {}
         self._discovered_device_timestamps: dict[str, float] = {}
-        self._connector = connector
-        self._connectable = connectable
+        self.connectable = connectable
+        self.connector = connector
         self._details: dict[str, str | HaBluetoothConnector] = {"source": scanner_id}
         self._expire_seconds = FALLBACK_MAXIMUM_STALE_ADVERTISEMENT_SECONDS
+        assert models.MANAGER is not None
+        self._storage = models.MANAGER.storage
         if connectable:
-            self._details["connector"] = connector
             self._expire_seconds = (
                 CONNECTABLE_FALLBACK_MAXIMUM_STALE_ADVERTISEMENT_SECONDS
             )
 
     @hass_callback
     def async_setup(self) -> CALLBACK_TYPE:
         """Set up the scanner."""
-        return async_track_time_interval(
+        if history := self._storage.async_get_advertisement_history(self.source):
+            self._discovered_device_advertisement_datas = (
+                history.discovered_device_advertisement_datas
+            )
+            self._discovered_device_timestamps = history.discovered_device_timestamps
+            # Expire anything that is too old
+            self._async_expire_devices(dt_util.utcnow())
+
+        cancel_track = async_track_time_interval(
             self.hass, self._async_expire_devices, timedelta(seconds=30)
         )
+        cancel_stop = self.hass.bus.async_listen(
+            EVENT_HOMEASSISTANT_STOP, self._save_history
+        )
+
+        @hass_callback
+        def _cancel() -> None:
+            self._save_history()
+            cancel_track()
+            cancel_stop()
+
+        return _cancel
+
+    def _save_history(self, event: Event | None = None) -> None:
+        """Save the history."""
+        self._storage.async_set_advertisement_history(
+            self.source,
+            DiscoveredDeviceAdvertisementData(
+                self.connectable,
+                self._expire_seconds,
+                self._discovered_device_advertisement_datas,
+                self._discovered_device_timestamps,
+            ),
+        )
 
     def _async_expire_devices(self, _datetime: datetime.datetime) -> None:
         """Expire old devices."""
@@ -222,7 +271,7 @@ def _async_on_advertisement(
                 source=self.source,
                 device=device,
                 advertisement=advertisement_data,
-                connectable=self._connectable,
+                connectable=self.connectable,
                 time=now,
             )
         )

homeassistant/components/bluetooth/manager.py

@@ -45,6 +45,7 @@
     ble_device_matches,
 )
 from .models import BluetoothCallback, BluetoothChange, BluetoothServiceInfoBleak
+from .storage import BluetoothStorage
 from .usage import install_multiple_bleak_catcher, uninstall_multiple_bleak_catcher
 from .util import async_load_history_from_system
 
@@ -102,6 +103,7 @@ def __init__(
         hass: HomeAssistant,
         integration_matcher: IntegrationMatcher,
         bluetooth_adapters: BluetoothAdapters,
+        storage: BluetoothStorage,
     ) -> None:
         """Init bluetooth manager."""
         self.hass = hass
@@ -128,6 +130,7 @@ def __init__(
         self._adapters: dict[str, AdapterDetails] = {}
         self._sources: dict[str, BaseHaScanner] = {}
         self._bluetooth_adapters = bluetooth_adapters
+        self.storage = storage
 
     @property
     def supports_passive_scan(self) -> bool:
@@ -196,12 +199,9 @@ async def async_setup(self) -> None:
         """Set up the bluetooth manager."""
         await self._bluetooth_adapters.refresh()
         install_multiple_bleak_catcher()
-        history = async_load_history_from_system(self._bluetooth_adapters)
-        # Everything is connectable so it fall into both
-        # buckets since the host system can only provide
-        # connectable devices
-        self._all_history = history.copy()
-        self._connectable_history = history.copy()
+        self._all_history, self._connectable_history = async_load_history_from_system(
+            self._bluetooth_adapters, self.storage
+        )
         self.async_setup_unavailable_tracking()
 
     @hass_callback

homeassistant/components/bluetooth/manifest.json

@@ -8,7 +8,7 @@
   "requirements": [
     "bleak==0.19.2",
     "bleak-retry-connector==2.10.1",
-    "bluetooth-adapters==0.12.0",
+    "bluetooth-adapters==0.14.1",
     "bluetooth-auto-recovery==0.5.5",
     "bluetooth-data-tools==0.3.0",
     "dbus-fast==1.82.0"

homeassistant/components/bluetooth/scanner.py

@@ -132,6 +132,7 @@ def __init__(
         """Init bluetooth discovery."""
         source = address if address != DEFAULT_ADDRESS else adapter or SOURCE_LOCAL
         super().__init__(hass, source, adapter)
+        self.connectable = True
         self.mode = mode
         self.adapter = adapter
         self._start_stop_lock = asyncio.Lock()

homeassistant/components/bluetooth/storage.py

@@ -0,0 +1,59 @@
+"""Storage for remote scanners."""
+from __future__ import annotations
+
+from bluetooth_adapters import (
+    DiscoveredDeviceAdvertisementData,
+    DiscoveryStorageType,
+    discovered_device_advertisement_data_from_dict,
+    discovered_device_advertisement_data_to_dict,
+    expire_stale_scanner_discovered_device_advertisement_data,
+)
+
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.helpers.storage import Store
+
+REMOTE_SCANNER_STORAGE_VERSION = 1
+REMOTE_SCANNER_STORAGE_KEY = "bluetooth.remote_scanners"
+SCANNER_SAVE_DELAY = 5
+
+
+class BluetoothStorage:
+    """Storage for remote scanners."""
+
+    def __init__(self, hass: HomeAssistant) -> None:
+        """Initialize the storage."""
+        self._store: Store[DiscoveryStorageType] = Store(
+            hass, REMOTE_SCANNER_STORAGE_VERSION, REMOTE_SCANNER_STORAGE_KEY
+        )
+        self._data: DiscoveryStorageType = {}
+
+    async def async_setup(self) -> None:
+        """Set up the storage."""
+        self._data = await self._store.async_load() or {}
+        expire_stale_scanner_discovered_device_advertisement_data(self._data)
+
+    def scanners(self) -> list[str]:
+        """Get all scanners."""
+        return list(self._data.keys())
+
+    @callback
+    def async_get_advertisement_history(
+        self, scanner: str
+    ) -> DiscoveredDeviceAdvertisementData | None:
+        """Get discovered devices by scanner."""
+        if not (scanner_data := self._data.get(scanner)):
+            return None
+        return discovered_device_advertisement_data_from_dict(scanner_data)
+
+    @callback
+    def _async_get_data(self) -> DiscoveryStorageType:
+        """Get data to save to disk."""
+        return self._data
+
+    @callback
+    def async_set_advertisement_history(
+        self, scanner: str, data: DiscoveredDeviceAdvertisementData
+    ) -> None:
+        """Set discovered devices by scanner."""
+        self._data[scanner] = discovered_device_advertisement_data_to_dict(data)
+        self._store.async_delay_save(self._async_get_data, SCANNER_SAVE_DELAY)

homeassistant/components/bluetooth/util.py

@@ -8,32 +8,64 @@
 from homeassistant.util.dt import monotonic_time_coarse
 
 from .models import BluetoothServiceInfoBleak
+from .storage import BluetoothStorage
 
 
 @callback
 def async_load_history_from_system(
-    adapters: BluetoothAdapters,
-) -> dict[str, BluetoothServiceInfoBleak]:
+    adapters: BluetoothAdapters, storage: BluetoothStorage
+) -> tuple[dict[str, BluetoothServiceInfoBleak], dict[str, BluetoothServiceInfoBleak]]:
     """Load the device and advertisement_data history if available on the current system."""
-    now = monotonic_time_coarse()
-    return {
-        address: BluetoothServiceInfoBleak(
-            name=history.advertisement_data.local_name
-            or history.device.name
-            or history.device.address,
-            address=history.device.address,
-            rssi=history.advertisement_data.rssi,
-            manufacturer_data=history.advertisement_data.manufacturer_data,
-            service_data=history.advertisement_data.service_data,
-            service_uuids=history.advertisement_data.service_uuids,
-            source=history.source,
-            device=history.device,
-            advertisement=history.advertisement_data,
-            connectable=False,
-            time=now,
-        )
-        for address, history in adapters.history.items()
-    }
+    now_monotonic = monotonic_time_coarse()
+    connectable_loaded_history: dict[str, BluetoothServiceInfoBleak] = {}
+    all_loaded_history: dict[str, BluetoothServiceInfoBleak] = {}
+
+    # Restore local adapters
+    for address, history in adapters.history.items():
+        if (
+            not (existing_all := connectable_loaded_history.get(address))
+            or history.advertisement_data.rssi > existing_all.rssi
+        ):
+            connectable_loaded_history[address] = all_loaded_history[
+                address
+            ] = BluetoothServiceInfoBleak.from_device_and_advertisement_data(
+                history.device,
+                history.advertisement_data,
+                history.source,
+                now_monotonic,
+                True,
+            )
+
+    # Restore remote adapters
+    for scanner in storage.scanners():
+        if not (adv_history := storage.async_get_advertisement_history(scanner)):
+            continue
+
+        connectable = adv_history.connectable
+        discovered_device_timestamps = adv_history.discovered_device_timestamps
+        for (
+            address,
+            (device, advertisement_data),
+        ) in adv_history.discovered_device_advertisement_datas.items():
+            service_info = BluetoothServiceInfoBleak.from_device_and_advertisement_data(
+                device,
+                advertisement_data,
+                scanner,
+                discovered_device_timestamps[address],
+                connectable,
+            )
+            if (
+                not (existing_all := all_loaded_history.get(address))
+                or service_info.rssi > existing_all.rssi
+            ):
+                all_loaded_history[address] = service_info
+            if connectable and (
+                not (existing_connectable := connectable_loaded_history.get(address))
+                or service_info.rssi > existing_connectable.rssi
+            ):
+                connectable_loaded_history[address] = service_info
+
+    return all_loaded_history, connectable_loaded_history
 
 
 async def async_reset_adapter(adapter: str | None) -> bool | None: