mirror of https://github.com/grpc/grpc.git
The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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62 lines
2.0 KiB
62 lines
2.0 KiB
4 years ago
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# Copyright 2020 The gRPC Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Send multiple greeting messages to the backend."""
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import asyncio
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import logging
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import argparse
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import grpc
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helloworld_pb2, helloworld_pb2_grpc = grpc.protos_and_services(
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"helloworld.proto")
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async def process(stub: helloworld_pb2_grpc.GreeterStub,
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request: helloworld_pb2.HelloRequest) -> None:
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try:
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response = await stub.SayHello(request)
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except grpc.aio.AioRpcError as rpc_error:
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print(f'Received error: {rpc_error}')
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else:
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print(f'Received message: {response}')
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async def run(addr: str, n: int) -> None:
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async with grpc.aio.insecure_channel(addr) as channel:
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stub = helloworld_pb2_grpc.GreeterStub(channel)
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request = helloworld_pb2.HelloRequest(name='you')
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for _ in range(n):
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await process(stub, request)
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async def main() -> None:
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parser = argparse.ArgumentParser()
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parser.add_argument('--addr',
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nargs=1,
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type=str,
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default='[::]:50051',
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help='the address to request')
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parser.add_argument('-n',
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nargs=1,
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type=int,
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default=10,
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help='an integer for number of messages to sent')
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args = parser.parse_args()
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await run(addr=args.addr, n=args.n)
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if __name__ == '__main__':
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logging.basicConfig(level=logging.INFO)
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asyncio.get_event_loop().run_until_complete(main())
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