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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
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77 lines
2.5 KiB
77 lines
2.5 KiB
# 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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from concurrent import futures |
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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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from google.protobuf import duration_pb2 |
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from google.protobuf import timestamp_pb2 |
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import grpc |
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import helloworld_pb2 |
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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 = ( |
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datetime.datetime.now() - request.request_initiation.ToDatetime() |
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) |
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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( |
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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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) |
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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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