samples/helloworld/server.py

#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
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# distributed under the License is distributed on an "AS IS" BASIS,
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import dubbo
from dubbo.configs import ServiceConfig
from dubbo.proxy.handlers import RpcMethodHandler, RpcServiceHandler


class UnaryServiceServicer:
    def say_hello(self, message: bytes) -> bytes:
        print(f"Received message from client: {message}")
        return b"Hello from server"


def build_service_handler():
    # build a method handler
    method_handler = RpcMethodHandler.unary(method=UnaryServiceServicer().say_hello, method_name="unary")
    # build a service handler
    service_handler = RpcServiceHandler(
        service_name="org.apache.dubbo.samples.HelloWorld",
        method_handlers=[method_handler],
    )
    return service_handler


if __name__ == "__main__":
    # build service config
    service_handler = build_service_handler()
    service_config = ServiceConfig(service_handler=service_handler, host="127.0.0.1", port=50051)
    # start the server
    server = dubbo.Server(service_config).start()

    input("Press Enter to stop the server...\n")