Question: How validate generated by protoc models?

[rdcm]

Hi,

I am currently actively developing an application using tonic and have now encountered a task to validate input data.
Is there any built-in validation mechanism in tonic?

Something like this:

#[derive(Debug, Validate, Deserialize)]
struct SignupData {
    #[validate(email)]
    mail: String,
    #[validate(url)]
    site: String,
    #[validate(length(min = 1), custom(function = "validate_unique_username"))]
    #[serde(rename = "firstName")]
    first_name: String,
    #[validate(range(min = 18, max = 20))]
    age: u32,
    #[validate(range(exclusive_min = 0.0, max = 100.0))]
    height: f32,
}

Project: https://github.com/rdcm/news-board

Thanks

[imotai]

Great idea! I think moving the request to https://github.com/tokio-rs/prost is better

[rdcm]

@imotai Which way preferred for validate requests models in tonic app at this moment without feature request to prost? Quick solution, writing code in each endpoint like this: is_valid(req)?.

[imotai]

@imotai Which way preferred for validate requests models in tonic app at this moment without feature request to prost? Quick solution, writing code in each endpoint like this: is_valid(req)?.

You can add an interceptor

fn intercept(req: Request<()>) -> Result<Request<()>, Status> {
     is_valid(req)
}

Server setup

let greeter = MyGreeter::default();
    let svc = GreeterServer::with_interceptor(greeter, intercept);