在github上找一个简单的grpc+docker的例子

以下是一个简单的 gRPC + Docker 的例子：

创建一个 gRPC 服务

# helloworld.proto
syntax = "proto3";

package helloworld;

service Greeter {
  rpc SayHello (HelloRequest) returns (HelloReply) {}
}

message HelloRequest {
  string name = 1;
}

message HelloReply {
  string message = 1;
}

# server.py
import grpc
import helloworld_pb2
import helloworld_pb2_grpc

class Greeter(helloworld_pb2_grpc.GreeterServicer):
    def SayHello(self, request, context):
        return helloworld_pb2.HelloReply(message=f"Hello, {request.name}!")

def serve():
    server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
    helloworld_pb2_grpc.add_GreeterServicer_to_server(Greeter(), server)
    server.add_insecure_port('[::]:50051')
    server.start()
    server.wait_for_termination()

if __name__ == '__main__':
    serve()

构建 Docker 镜像

FROM python:3.8-slim-buster

WORKDIR /app

COPY requirements.txt .

RUN pip install --no-cache-dir -r requirements.txt

COPY . .

CMD ["python", "./server.py"]

运行 Docker 容器

docker build -t grpc-docker .

docker run -p 50051:50051 grpc-docker

测试 gRPC 服务

import grpc
import helloworld_pb2
import helloworld_pb2_grpc

channel = grpc.insecure_channel('localhost:50051')
stub = helloworld_pb2_grpc.GreeterStub(channel)
response = stub.SayHello(helloworld_pb2.HelloRequest(name='World'))
print(response.message)