python：在拦截器中读取grpc proto请求

Question

How can I read grpc proto request in interceptor with Python?

In PHP, I can read the $argument, it's what I need.

<?php

use Grpc\Interceptor;

class MyInterceptor extends Interceptor
{


    public function interceptUnaryUnary($method,
                                        $argument,
                                        $deserialize,
                                        array $metadata = [],
                                        array $options = [],
                                        $continuation)
    {
        // $argument is what I needto 
        return parent::interceptUnaryUnary($method, $argument, $deserialize, $metadata, $options, $continuation);
    }
}

Answer 1

Unfortunately, gRPC Python doesn't have a complete server interceptor implemenataion that allow you to access request or servicer_context, but you may access to method string and invocation_metadata, for more detail check the history. If the semantic you want to achieve can be implemented in Python's metaclass or inheritance, please do so. If you would like to request for this feature, please post an issue in the GitHub repo grpc/grpc...

Here are some resources that might help you find the answer:

• The documentation for Python interceptors

• The design of Python interceptors

• The example for Python interceptors

• The example Python interceptor for server