Where can I find examples of using gRPC with asyncio In particular, how to create a client using gRPC and asyncio
3 Answers
As of version 1.32, gRPC now supports asyncio in its Python API. If you're using an earlier version, you can still use the asyncio API via the experimental API: from grpc.experimental import aio. An asyncio hello world example has also been added to the gRPC repo. The following code is a copy of the example client:
import logging
import asyncio
from grpc import aio
import helloworld_pb2
import helloworld_pb2_grpc
async def run():
# NOTE(gRPC Python Team): .close() is possible on a channel and should be
# used in circumstances in which the with statement does not fit the needs
# of the code.
async with aio.insecure_channel('localhost:50051') as channel:
stub = helloworld_pb2_grpc.GreeterStub(channel)
response = await stub.SayHello(helloworld_pb2.HelloRequest(name='you'))
print("Greeter client received: " + response.message)
if __name__ == '__main__':
logging.basicConfig()
asyncio.run(run())
See my other answer for how to implement the server.
gRPC Python is currently not compatible with asyncio. See dicussion/feature request at https://github.com/grpc/grpc/issues/6046.
gRPC support for AsyncIO is now generally available, you can find the documentation here: https://grpc.github.io/grpc/python/grpc_asyncio.html
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