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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77 lines
2.5 KiB
77 lines
2.5 KiB
5 years ago
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# Copyright 2019 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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"""The Python implementation of the GRPC helloworld.Greeter client."""
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import contextlib
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import datetime
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import logging
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import unittest
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import grpc
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from google.protobuf import duration_pb2
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from google.protobuf import timestamp_pb2
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from concurrent import futures
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from google.cloud import helloworld_pb2
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from google.cloud import helloworld_pb2_grpc
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_HOST = 'localhost'
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_SERVER_ADDRESS = '{}:0'.format(_HOST)
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class Greeter(helloworld_pb2_grpc.GreeterServicer):
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def SayHello(self, request, context):
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request_in_flight = datetime.datetime.now() - \
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request.request_initiation.ToDatetime()
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request_duration = duration_pb2.Duration()
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request_duration.FromTimedelta(request_in_flight)
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return helloworld_pb2.HelloReply(
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message='Hello, %s!' % request.name,
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request_duration=request_duration,
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)
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@contextlib.contextmanager
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def _listening_server():
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server = grpc.server(futures.ThreadPoolExecutor())
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helloworld_pb2_grpc.add_GreeterServicer_to_server(Greeter(), server)
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port = server.add_insecure_port(_SERVER_ADDRESS)
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server.start()
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try:
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yield port
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finally:
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server.stop(0)
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class ImportTest(unittest.TestCase):
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def test_import(self):
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with _listening_server() as port:
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with grpc.insecure_channel('{}:{}'.format(_HOST, port)) as channel:
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stub = helloworld_pb2_grpc.GreeterStub(channel)
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request_timestamp = timestamp_pb2.Timestamp()
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request_timestamp.GetCurrentTime()
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response = stub.SayHello(helloworld_pb2.HelloRequest(
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name='you',
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request_initiation=request_timestamp,
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),
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wait_for_ready=True)
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self.assertEqual(response.message, "Hello, you!")
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self.assertGreater(response.request_duration.nanos, 0)
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if __name__ == '__main__':
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logging.basicConfig()
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unittest.main()
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