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# Copyright 2022 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import annotations
import contextlib
import functools
import inspect
import logging
from collections.abc import Generator, MutableMapping
from typing import Any
import grpc
from google.protobuf.message import Message # pytype: disable=pyi-error
from bumble.device import Device
from bumble.hci import Address, AddressType
ADDRESS_TYPES: dict[str, AddressType] = {
"public": Address.PUBLIC_DEVICE_ADDRESS,
"random": Address.RANDOM_DEVICE_ADDRESS,
"public_identity": Address.PUBLIC_IDENTITY_ADDRESS,
"random_static_identity": Address.RANDOM_IDENTITY_ADDRESS,
}
def address_from_request(request: Message, field: str | None) -> Address:
if field is None:
return Address.ANY
return Address(bytes(reversed(getattr(request, field))), ADDRESS_TYPES[field])
class BumbleServerLoggerAdapter(logging.LoggerAdapter): # type: ignore
"""Formats logs from the PandoraClient."""
def process(
self, msg: str, kwargs: MutableMapping[str, Any]
) -> tuple[str, MutableMapping[str, Any]]:
assert self.extra
service_name = self.extra['service_name']
assert isinstance(service_name, str)
device = self.extra['device']
assert isinstance(device, Device)
addr_bytes = bytes(
reversed(bytes(device.public_address))
) # pytype: disable=attribute-error
addr = ':'.join([f'{x:02X}' for x in addr_bytes[4:]])
return (f'[bumble.{service_name}:{addr}] {msg}', kwargs)
@contextlib.contextmanager
def exception_to_rpc_error(
context: grpc.ServicerContext,
) -> Generator[None, None, None]:
try:
yield None
except NotImplementedError as e:
context.set_code(grpc.StatusCode.UNIMPLEMENTED) # type: ignore
context.set_details(str(e)) # type: ignore
except ValueError as e:
context.set_code(grpc.StatusCode.INVALID_ARGUMENT) # type: ignore
context.set_details(str(e)) # type: ignore
except RuntimeError as e:
context.set_code(grpc.StatusCode.ABORTED) # type: ignore
context.set_details(str(e)) # type: ignore
# Decorate an RPC servicer method with a wrapper that transform exceptions to gRPC errors.
def rpc(func: Any) -> Any:
@functools.wraps(func)
async def asyncgen_wrapper(
self: Any, request: Any, context: grpc.ServicerContext
) -> Any:
with exception_to_rpc_error(context):
async for v in func(self, request, context):
yield v
@functools.wraps(func)
async def async_wrapper(
self: Any, request: Any, context: grpc.ServicerContext
) -> Any:
with exception_to_rpc_error(context):
return await func(self, request, context)
@functools.wraps(func)
def gen_wrapper(self: Any, request: Any, context: grpc.ServicerContext) -> Any:
with exception_to_rpc_error(context):
yield from func(self, request, context)
@functools.wraps(func)
def wrapper(self: Any, request: Any, context: grpc.ServicerContext) -> Any:
with exception_to_rpc_error(context):
return func(self, request, context)
if inspect.isasyncgenfunction(func):
return asyncgen_wrapper
if inspect.iscoroutinefunction(func):
return async_wrapper
if inspect.isgenerator(func):
return gen_wrapper
return wrapper
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