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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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79 lines
2.8 KiB
79 lines
2.8 KiB
5 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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"""The Python implementation of the GRPC helloworld.Greeter server."""
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from concurrent import futures
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import argparse
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import logging
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import socket
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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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from grpc_reflection.v1alpha import reflection
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from grpc_health.v1 import health
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from grpc_health.v1 import health_pb2
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from grpc_health.v1 import health_pb2_grpc
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_DESCRIPTION = "A general purpose dummy server."
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class Greeter(helloworld_pb2_grpc.GreeterServicer):
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def __init__(self, hostname):
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self._hostname = hostname if hostname else socket.gethostname()
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def SayHello(self, request, context):
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return helloworld_pb2.HelloReply(
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message=f"Hello {request.name} from {self._hostname}!")
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def serve(port, hostname):
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server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
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helloworld_pb2_grpc.add_GreeterServicer_to_server(Greeter(hostname), server)
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health_servicer = health.HealthServicer(
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experimental_non_blocking=True,
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experimental_thread_pool=futures.ThreadPoolExecutor(max_workers=4))
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health_pb2_grpc.add_HealthServicer_to_server(health_servicer, server)
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services = tuple(
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service.full_name
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for service in helloworld_pb2.DESCRIPTOR.services_by_name.values()) + (
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reflection.SERVICE_NAME, health.SERVICE_NAME)
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reflection.enable_server_reflection(services, server)
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server.add_insecure_port(f"[::]:{port}")
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server.start()
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overall_server_health = ""
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for service in services + (overall_server_health,):
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health_servicer.set(service, health_pb2.HealthCheckResponse.SERVING)
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server.wait_for_termination()
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description=_DESCRIPTION)
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parser.add_argument("port",
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default=50051,
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type=int,
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nargs="?",
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help="The port on which to listen.")
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parser.add_argument("hostname",
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type=str,
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default=None,
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nargs="?",
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help="The name clients will see in responses.")
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args = parser.parse_args()
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logging.basicConfig()
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serve(args.port, args.hostname)
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