async def get_services(self) -> BleakGATTServiceCollection:
"""Get all services registered for this GATT server.
Returns:
A :py:class:`bleak.backends.service.BleakGATTServiceCollection` with this device's services tree.
"""
if self._services_resolved:
return self.services
while True:
properties = await self._get_device_properties()
services_resolved = properties.get("ServicesResolved", False)
if services_resolved:
break
await asyncio.sleep(0.02, loop=self.loop)
logger.debug("Get Services...")
objs = await get_managed_objects(self._bus, self.loop,
self._device_path + "/service")
# There is no guarantee that services are listed before characteristics
# Managed Objects dict.
# Need multiple iterations to construct the Service Collection
_chars, _descs = [], []
for object_path, interfaces in objs.items():
logger.debug(utils.format_GATT_object(object_path, interfaces))
if defs.GATT_SERVICE_INTERFACE in interfaces:
service = interfaces.get(defs.GATT_SERVICE_INTERFACE)
self.services.add_service(
BleakGATTServiceBlueZDBus(service, object_path))
elif defs.GATT_CHARACTERISTIC_INTERFACE in interfaces:
char = interfaces.get(defs.GATT_CHARACTERISTIC_INTERFACE)
_chars.append([char, object_path])
elif defs.GATT_DESCRIPTOR_INTERFACE in interfaces:
desc = interfaces.get(defs.GATT_DESCRIPTOR_INTERFACE)
_descs.append([desc, object_path])
for char, object_path in _chars:
_service = list(
filter(lambda x: x.path == char["Service"], self.services))
self.services.add_characteristic(
BleakGATTCharacteristicBlueZDBus(char, object_path,
_service[0].uuid))
self._char_path_to_uuid[object_path] = char.get("UUID")
for desc, object_path in _descs:
_characteristic = list(
filter(
lambda x: x.path == desc["Characteristic"],
self.services.characteristics.values(),
))
self.services.add_descriptor(
BleakGATTDescriptorBlueZDBus(desc, object_path,
_characteristic[0].uuid))
self._services_resolved = True
return self.services
def _interface_added_callback(self, message):
object_path = message.body[0]
if not object_path.startswith(self._device_path):
return
interfaces = message.body[1]
logger.debug("[NEW] " +
utils.format_GATT_object(object_path, interfaces))
if defs.GATT_SERVICE_INTERFACE in interfaces:
service = interfaces.get(defs.GATT_SERVICE_INTERFACE)
self.services[service.get("UUID")] = service
self.services[service.get("UUID")]["Path"] = object_path
elif defs.GATT_CHARACTERISTIC_INTERFACE in interfaces:
char = interfaces.get(defs.GATT_CHARACTERISTIC_INTERFACE)
self.characteristics[char.get("UUID")] = char
self.characteristics[char.get("UUID")]["Path"] = object_path
elif defs.GATT_DESCRIPTOR_INTERFACE in interfaces:
desc = interfaces.get(defs.GATT_DESCRIPTOR_INTERFACE)
self._descriptors[desc.get("UUID")] = desc
self._descriptors[desc.get("UUID")]["Path"] = object_path
async def get_services(self) -> dict:
"""Get all services registered for this GATT server.
Returns:
Dictionary of all service UUIDs as keys and
service object's properties as values.
"""
logger.debug("Get Services...")
objs = await get_managed_objects(self._bus, self.loop,
self._device_path + "/service")
self.services = {}
self.characteristics = {}
self._descriptors = {}
for object_path, interfaces in objs.items():
logger.debug(utils.format_GATT_object(object_path, interfaces))
if defs.GATT_SERVICE_INTERFACE in interfaces:
service = interfaces.get(defs.GATT_SERVICE_INTERFACE)
self.services[service.get("UUID")] = service
self.services[service.get("UUID")]["Path"] = object_path
elif defs.GATT_CHARACTERISTIC_INTERFACE in interfaces:
char = interfaces.get(defs.GATT_CHARACTERISTIC_INTERFACE)
self.characteristics[char.get("UUID")] = char
self.characteristics[char.get("UUID")]["Path"] = object_path
self._char_path_to_uuid[object_path] = char.get("UUID")
elif defs.GATT_DESCRIPTOR_INTERFACE in interfaces:
desc = interfaces.get(defs.GATT_DESCRIPTOR_INTERFACE)
self._descriptors[desc.get("UUID")] = desc
self._descriptors[desc.get("UUID")]["Path"] = object_path
await asyncio.sleep(0.01, loop=self.loop)
properties = await self._get_device_properties()
services_resolved = properties.get("ServicesResolved", False)
if self._services_resolved and not services_resolved:
raise BleakError("Services had not been resolved yet!")
return self.services
