Enum Error 

#[non_exhaustive]
pub enum Error {
    NotFound,
    MethodNotAllowed,
    BadRequest(String),
    Unauthorized,
    Forbidden,
    PayloadTooLarge,
    TooManyRequests,
    Internal(String),
}

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

NotFound

MethodNotAllowed

BadRequest(String)

Unauthorized

Forbidden

PayloadTooLarge

413 Payload Too Large. Produced by the form parser when an incoming body exceeds the configured limit; the ceiling is a DoS defence, not a business rule.

TooManyRequests

429 Too Many Requests. Used by the login rate limiter when a caller has tripped the failure threshold.

Internal(String)

Implementations

impl Error

pub fn status(&self) -> u16

HTTP status code associated with this variant.

Examples found in repository

examples/homepage.rs (line 33)

async fn logger(req: Request, next: Next) -> Result<Response, Error> {
    let method = req.method().clone();
    let path = req.uri().path().to_owned();
    let id = req.ctx().get::<RequestId>().map(|r| r.0);
    let user = rustio_core::auth::identity(req.ctx()).map(|i| i.email.clone());
    let started = Instant::now();
    let result = next.run(req).await;
    let status = match &result {
        Ok(resp) => resp.status().as_u16(),
        Err(err) => err.status(),
    };
    let id_display = id.map(|i| format!("req-{i}")).unwrap_or_else(|| "-".into());
    let user_display = user.unwrap_or_else(|| "-".into());
    eprintln!(
        "[{:>3}] {:>4} {} id={} user={} ({:?})",
        status,
        method,
        path,
        id_display,
        user_display,
        started.elapsed()
    );
    result
}

pub fn message(&self) -> &str

Human-readable message carried by the variant.

For Internal, this returns the full underlying detail. That detail is safe for logs but is not sent to HTTP clients — see Error::into_response.

pub fn into_response(self) -> Response

Convert this error into an HTTP response.

The body exposed to clients is sanitized for Internal — it always reads "Internal Server Error", never the original detail.

Trait Implementations

impl Debug for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for Error

fn from(value: Error) -> Self

Converts to this type from the input type.

impl From<SchemaError> for Error

fn from(e: SchemaError) -> Self

Converts to this type from the input type.