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allow overriding backend
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This can be useful for custom backends and testing.
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dlech committed Sep 21, 2022
1 parent ec5d19d commit c5191b7
Showing 1 changed file with 28 additions and 13 deletions.
41 changes: 28 additions & 13 deletions bleak/__init__.py
Original file line number Diff line number Diff line change
Expand Up @@ -24,12 +24,13 @@

from .__version__ import __version__ # noqa: F401
from .backends.characteristic import BleakGATTCharacteristic
from .backends.client import get_platform_client_backend_type
from .backends.client import BaseBleakClient, get_platform_client_backend_type
from .backends.device import BLEDevice
from .backends.scanner import (
AdvertisementData,
AdvertisementDataCallback,
AdvertisementDataFilter,
BaseBleakScanner,
get_platform_scanner_backend_type,
)
from .backends.service import BleakGATTServiceCollection
Expand Down Expand Up @@ -68,6 +69,9 @@ class BleakScanner:
:class:`BleakError` if set to ``"passive"`` on macOS.
bluez:
Dictionary of arguments specific to the BlueZ backend.
backend:
Used to override the automatically selected backend (i.e. for a
custom backend).
**kwargs:
Additional args for backwards compatibility.
"""
Expand All @@ -79,12 +83,16 @@ def __init__(
scanning_mode: Literal["active", "passive"] = "active",
*,
bluez: BlueZScannerArgs = {},
backend: Optional[BaseBleakScanner] = None,
**kwargs,
):
PlatformBleakScanner = get_platform_scanner_backend_type()
self._backend = PlatformBleakScanner(
detection_callback, service_uuids, scanning_mode, bluez=bluez, **kwargs
)
if backend is None:
PlatformBleakScanner = get_platform_scanner_backend_type()
self._backend = PlatformBleakScanner(
detection_callback, service_uuids, scanning_mode, bluez=bluez, **kwargs
)
else:
self._backend = backend

async def __aenter__(self):
await self._backend.start()
Expand Down Expand Up @@ -267,6 +275,9 @@ class BleakClient:
``device_or_address`` is not a :class:`BLEDevice`. Defaults to 10.0.
winrt:
Dictionary of WinRT/Windows platform-specific options.
backend:
Used to override the automatically selected backend (i.e. for a
custom backend).
**kwargs:
Additional keyword arguments for backwards compatibility.
Expand All @@ -291,16 +302,20 @@ def __init__(
*,
timeout: float = 10.0,
winrt: WinRTClientArgs = {},
backend: Optional[BaseBleakClient] = None,
**kwargs,
):
PlatformBleakClient = get_platform_client_backend_type()
self._backend = PlatformBleakClient(
device_or_address,
disconnected_callback=disconnected_callback,
timeout=timeout,
winrt=winrt,
**kwargs,
)
if backend is None:
PlatformBleakClient = get_platform_client_backend_type()
self._backend = PlatformBleakClient(
device_or_address,
disconnected_callback=disconnected_callback,
timeout=timeout,
winrt=winrt,
**kwargs,
)
else:
self._backend = backend

# device info

Expand Down

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