greeter_client.py

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"""The Python implementation of the GRPC helloworld.Greeter client."""

import argparse

import grpc

import helloworld_pb2
import helloworld_pb2_grpc


def run(host, api_key):
    channel = grpc.insecure_channel(host)
    stub = helloworld_pb2_grpc.GreeterStub(channel)
    metadata = []
    if api_key:
        metadata.append(('x-api-key', api_key))
    response = stub.SayHello(
        helloworld_pb2.HelloRequest(name='you'), metadata=metadata)
    print('Greeter client received: ' + response.message)
    response = stub.SayHelloAgain(
        helloworld_pb2.HelloRequest(name='you'), metadata=metadata)
    print('Greeter client received: ' + response.message)


if __name__ == '__main__':
    parser = argparse.ArgumentParser(
        description=__doc__,
        formatter_class=argparse.RawDescriptionHelpFormatter)
    parser.add_argument(
        '--host', default='localhost:50051', help='The server host.')
    parser.add_argument(
        '--api_key', default=None, help='The API key to use for the call.')
    args = parser.parse_args()
    run(args.host, args.api_key)