grpc 报错 At least one of the completion queues must be frequently polled 如何改进, 给出代码
时间: 2024-03-06 11:49:13 浏览: 180
以下是一个简单的gRPC服务器示例代码,其中包含了正确处理CQ的示例:
```python
import grpc
from concurrent import futures
import my_service_pb2
import my_service_pb2_grpc
class MyService(my_service_pb2_grpc.MyServiceServicer):
def MyMethod(self, request, context):
# Handle request
response = my_service_pb2.Response()
return response
def serve():
server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
my_service_pb2_grpc.add_MyServiceServicer_to_server(MyService(), server)
server.add_insecure_port('[::]:50051')
server.start()
try:
while True:
# Poll CQs frequently
time.sleep(1)
server._completion_queue.poll(0)
server._callback_groups[0].poll(0)
except KeyboardInterrupt:
server.stop(0)
if __name__ == '__main__':
serve()
```
在上面的代码中,我们使用了Python的`time`模块来定期调用gRPC服务器的两个CQ(`server._completion_queue`和`server._callback_groups[0]`)的`poll()`方法。这样可以确保及时处理异步操作完成时的通知,从而避免了"At least one of the completion queues must be frequently polled"错误的发生。
此外,我们还使用了gRPC提供的ThreadPoolExecutor来处理请求。这样可以让服务器在处理多个请求时更加高效和稳定。
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