agi-med-grpc-interceptors
Стандартные middlewares для grpc
Ответственный разработчик
@zhelvakov
Общая информация
- LoggingInterceptor - работает на loguru. Принимает metadata, забирает все хедеры и пытается использовать как контекст, по-умолчанию дополнительно прописывает uuid в контекст. Обработка ошибок может быть переопределена с помощью метода exception_handler
- ExcHandlerInterceptor - добавляет подсчет ошибок с помощью prometheus: error_counter[path, status_code, error]. Обрабатывает ошибки, которые наследуются от BaseGrpcError (Пример ниже)
Примеры
- Подключение interceptors
import grpc
from concurrent import futures
from agi_med_grpc_interceptors import LoggingInterceptor, ExcHandlerInterceptor
server = grpc.server(
futures.ThreadPoolExecutor(max_workers=10),
interceptors=[LoggingInterceptor(), ExcHandlerInterceptor()],
)
- Реализация ошибки для сервиса
#server
from agi_med_grpc_interceptors import BaseGrpcError, DefaultValue
from grpc import StatusCode
from .some_protos.Some_pb2_grpc import SomeServicer
from .Some_pb import GetSalaryResponse, GetSalaryRequest
class EmployerNotFound(BaseGrpcError[float]):
def __init__(self, message: str) -> None:
default_value = DefaultValue[float](value=0)
super().__init__(StatusCode.ALREADY_EXISTS, message, default_value)
class Some(SomeServicer):
def GetSalary(self, request: GetSalaryRequest) -> GetSalaryResponse:
if request.Username == "bob":
raise EmployerNotFound("Bob, go to home!")
return GetSalaryResponse(salary=10_000)
#client
from agi_med_grpc_interceptors import BaseGrpcError, ErrorDetails
from grpc import RpcError
from .Some_pb import GetSalaryResponse, GetSalaryRequest
from .Some_pb2_grpc import SomeStub
stub = SomeStub("0.0.0.0:5000")
try:
request = GetSalaryRequest(Username="bob")
response: GetSalaryResponse = stub.DoSomething(request)
except RpcError as ex:
error: ErrorDetails[float] | None = BaseGrpcError[float].extract_error(ex)
default_value: float | None = BaseGrpcError[float].extract_default_value_from_error(ex)
print(f"{error=}")
print(f"{default_value=}")
Линтеры
pip install black flake8-pyproject mypy
black .
flake8
mypy .
Metadata
Release files for agi-med-grpc-interceptors 3.2.0
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