Struct pavex::blueprint::middleware::RegisteredPostProcessingMiddleware

pub struct RegisteredPostProcessingMiddleware<'a> { /* private fields */ }

The type returned by Blueprint::post_process.

It allows you to further configure the behaviour of post-processing middleware you just registered.

Implementations

impl<'a> RegisteredPostProcessingMiddleware<'a>

pub fn error_handler(self, error_handler: RawCallable) -> Self

Register an error handler.

If an error handler has already been registered for this middleware, it will be overwritten.

Guide

Check out the “Error handlers” section of Pavex’s guide for a thorough introduction to error handlers in Pavex applications.

Example

use pavex::{f, blueprint::Blueprint};
use pavex::response::Response;

// 👇 a fallible post-processing middleware
fn max_response_size(response: Response) -> Result<Response, SizeError>
{
    // [...]
}

fn error_to_response(error: &SizeError) -> Response {
    // [...]
}

let mut bp = Blueprint::new();
bp.post_process(f!(crate::max_response_size))
    .error_handler(f!(crate::error_to_response));