How to get the original body in case of a JsonRejection?

[domma]

Summary

I have a handler that looks like this:

async fn my_handler(
    payload: std::result::Result<Json<Action>, JsonRejection>
) -> Result<Response> {
    // ...
}

This works fine in general: I pattern match payload. If the input is correct, I get an Action and if not a JsonRejection with further details about the problem.

What I'm missing is the original input data. I would like to store it for debugging purposes and further inspection. But I did not find a way to access it. I expected body_text to provide that information, but it is only the detailed error message.

Is there a (simple?) way to access original input data if I get a JsonRejection?

axum version

0.8.3

[jplatte]

No, that's not possible. You're going to have to write your own Json extractor if you want that. Take a look at the Json implementation inside axum - it's not that hard and if you can make some assumption about clients (e.g. they always use exactly the application/json content type), it's even easier. We might at some point make it even easier.