Release/0.19.2

CHANGELOG.rst

@@ -10,6 +10,15 @@ and this project adheres to `Semantic Versioning <https://semver.org/spec/v2.0.0
 `Unreleased`_
 =============
 
+`0.19.2`_ (2022-11-06)
+======================
+
+Fixed
+------
+* Fixed crash when getting services in WinRT backend in Python 3.11. Fixes #1112.
+* Fixed cache mode when retrying get services in WinRT backend. Merged #1102.
+* Fixed ``KeyError`` crash in BlueZ backend when removing non-existent property. Fixes #1107.
+
 `0.19.1`_ (2022-10-29)
 ======================
 
@@ -850,7 +859,8 @@ Fixed
 * Bleak created.
 
 
-.. _Unreleased: https://github.com/hbldh/bleak/compare/v0.19.1...develop
+.. _Unreleased: https://github.com/hbldh/bleak/compare/v0.19.2...develop
+.. _0.19.2: https://github.com/hbldh/bleak/compare/v0.19.1...v0.19.2
 .. _0.19.1: https://github.com/hbldh/bleak/compare/v0.19.0...v0.19.1
 .. _0.19.0: https://github.com/hbldh/bleak/compare/v0.18.1...v0.19.0
 .. _0.18.1: https://github.com/hbldh/bleak/compare/v0.18.0...v0.18.1

bleak/backends/bluezdbus/manager.py

@@ -818,7 +818,12 @@ def _parse_msg(self, message: Message):
                 self_interface.update(unpack_variants(changed))
 
                 for name in invalidated:
-                    del self_interface[name]
+                    try:
+                        del self_interface[name]
+                    except KeyError:
+                        # sometimes there BlueZ tries to remove properties
+                        # that were never added
+                        pass
 
                 # then call any callbacks so they will be called with the
                 # updated state

bleak/backends/winrt/client.py

@@ -6,10 +6,12 @@
 """
 
 import asyncio
+import functools
 import logging
 import sys
 import uuid
 import warnings
+from ctypes import pythonapi
 from typing import Any, Dict, List, Optional, Sequence, Union, cast
 
 import async_timeout
@@ -44,11 +46,15 @@
     DevicePairingResultStatus,
     DeviceUnpairingResultStatus,
 )
-from bleak_winrt.windows.foundation import EventRegistrationToken
+from bleak_winrt.windows.foundation import (
+    AsyncStatus,
+    EventRegistrationToken,
+    IAsyncOperation,
+)
 from bleak_winrt.windows.storage.streams import Buffer
 
 from ... import BleakScanner
-from ...exc import PROTOCOL_ERROR_CODES, BleakError, BleakDeviceNotFoundError
+from ...exc import PROTOCOL_ERROR_CODES, BleakDeviceNotFoundError, BleakError
 from ..characteristic import BleakGATTCharacteristic
 from ..client import BaseBleakClient, NotifyCallback
 from ..device import BLEDevice
@@ -250,7 +256,7 @@ async def connect(self, **kwargs) -> bool:
 
         def handle_services_changed():
             if not self._services_changed_events:
-                logger.warn("%s: unhandled services changed event", self.address)
+                logger.warning("%s: unhandled services changed event", self.address)
             else:
                 for event in self._services_changed_events:
                     event.set()
@@ -568,7 +574,10 @@ async def get_services(self, **kwargs) -> BleakGATTServiceCollection:
                 services_changed_event.wait()
             )
             self._services_changed_events.append(services_changed_event)
-            get_services_task = self._requester.get_gatt_services_async(*args)
+
+            get_services_task = FutureLike(
+                self._requester.get_gatt_services_async(*args)
+            )
 
             try:
                 await asyncio.wait(
@@ -587,10 +596,10 @@ async def get_services(self, **kwargs) -> BleakGATTServiceCollection:
                 "%s: restarting get services due to services changed event",
                 self.address,
             )
-            args = [BluetoothCacheMode.UNCACHED]
+            args = [BluetoothCacheMode.CACHED]
 
         services: Sequence[GattDeviceService] = _ensure_success(
-            get_services_task.get_results(),
+            get_services_task.result(),
             "services",
             "Could not get GATT services",
         )
@@ -885,3 +894,64 @@ async def stop_notify(
 
         event_handler_token = self._notification_callbacks.pop(characteristic.handle)
         characteristic.obj.remove_value_changed(event_handler_token)
+
+
+class FutureLike:
+    """
+    Wraps a WinRT IAsyncOperation in a "future-like" object so that it can
+    be passed to Python APIs.
+
+    Needed until https://github.com/pywinrt/pywinrt/issues/14
+    """
+
+    _asyncio_future_blocking = True
+
+    def __init__(self, async_result: IAsyncOperation) -> None:
+        self._async_result = async_result
+        self._callbacks = []
+        self._loop = asyncio.get_running_loop()
+
+        def call_callbacks(op: IAsyncOperation, status: AsyncStatus):
+            for c in self._callbacks:
+                c(self)
+
+        async_result.completed = functools.partial(
+            self._loop.call_soon_threadsafe, call_callbacks
+        )
+
+    def result(self) -> Any:
+        return self._async_result.get_results()
+
+    def done(self) -> bool:
+        return self._async_result.status != AsyncStatus.STARTED
+
+    def cancelled(self) -> bool:
+        return self._async_result.status == AsyncStatus.CANCELED
+
+    def add_done_callback(self, callback, *, context=None) -> None:
+        self._callbacks.append(callback)
+
+    def remove_done_callback(self, callback) -> None:
+        self._callbacks.remove(callback)
+
+    def cancel(self, msg=None) -> bool:
+        if self._async_result.status != AsyncStatus.STARTED:
+            return False
+        self._async_result.cancel()
+        return True
+
+    def exception(self) -> Optional[Exception]:
+        if self._async_result.status == AsyncStatus.STARTED:
+            raise asyncio.InvalidStateError
+        if self._async_result.status == AsyncStatus.COMPLETED:
+            return None
+        if self._async_result.status == AsyncStatus.CANCELED:
+            raise asyncio.CancelledError
+        if self._async_result.status == AsyncStatus.ERROR:
+            try:
+                pythonapi.PyErr_SetFromWindowsErr(self._async_result.error_code)
+            except OSError as e:
+                return e
+
+    def get_loop(self) -> asyncio.AbstractEventLoop:
+        return self._loop

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "bleak"
-version = "0.19.1"
+version = "0.19.2"
 description = "Bluetooth Low Energy platform Agnostic Klient"
 authors = ["Henrik Blidh <henrik.blidh@nedomkull.com>"]
 license = "MIT"