Interface equivalent of C# in grpc proto file

Question

I need to have common contract for set of proto files similar like interfaces in C#. Is there anything in grpc using which I can implement such functionality.

interface IMyInterfaceWithCommonMethods
{
    void MyCommonMethod1();
    void MyCommonMethod2();
}

interface IMyInterface2: IMyInterfaceWithCommonMethods
{
    void MyMethod2();
}


public class MyClass : IMyInterface2
{
    public void MyMethod2()
    {
        Console.WriteLine("MyMethod2");
    }

    public void MyCommonMethod1()
    {
        throw new NotImplementedException();
    }

    public void MyCommonMethod2()
    {
        throw new NotImplementedException();
    }
}

Expected code in grpc proto

service Myervice implements IMyInterfaceWithCommonMethods{
    rpc MyCommonMethod1(MyRequest1) returns (MyResponse1);
    rpc MyCommonMethod2(MyRequest1) returns (MyResponse1);
    rpc MyMethod2(MyRequest1) returns MyResponse1;
}

Answer 1

There is not.

I understand why this would be desirable.

I don't know why it isn't a facility of protocol buffers, perhaps:

1. Simplicity
2. Not all protobuf supporting languages support OO-like interfaces
3. Service definitions can function like interfaces see Health Checking

As an alternative, you could enforce this as organizational best practice and during code review.