Enum AlsError 

pub enum AlsError {
    NotSet,
}

Rejection type returned by an #[als]-generated extractor when the value was never installed on the current task.

This almost always indicates a wiring bug — middleware that should have set the ALS via with_<name>(value, future) didn’t, so the handler runs without the per-request context it expects. Surface it as a 500 (or your framework’s “internal error”) so it doesn’t masquerade as a 400 / 404 from a real request shape.

Variants

NotSet

No value for the requested ALS key is installed on the current task. Either the request never entered a with_* scope, or a tokio::spawn boundary stripped the task-local — see crate::spawn_with_request_scope for the request-scoped analogue.

Trait Implementations

impl Clone for AlsError

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for AlsError

impl Debug for AlsError

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

Formats the value using the given formatter.

impl Display for AlsError

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

Formats the value using the given formatter.

impl Eq for AlsError

impl Error for AlsError

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 IntoResponse for AlsError

fn into_response(self) -> Response

Create a response.

impl PartialEq for AlsError

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for AlsError