Enum Outcome 

#[non_exhaustive]
pub enum Outcome {
    Served,
    Unauthenticated,
    NotFound,
    Malformed,
    Unavailable,
}

What happened to one request.

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.

Served

The caller was authorised and got what it asked for.

Unauthenticated

The caller presented no usable credential.

NotFound

The caller is somebody, but not somebody who may read this — or nothing is served here. One outcome for both, because the server does not distinguish them to the caller and an audit log that did would be a way to ask it to.

Malformed

The request’s shape was refused before anything was looked up.

Unavailable

The caller was authorised and the section could not answer: it has no document yet, or a diagnostic could not read the sources. About the server, not about the caller — which is why it is not NotFound.

Implementations

impl Outcome

pub fn as_str(self) -> &'static str

A short, stable label, for a log field or a metric dimension.

Trait Implementations

impl Clone for Outcome

fn clone(&self) -> Outcome

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Outcome

impl Debug for Outcome

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

Formats the value using the given formatter.

impl Eq for Outcome

impl PartialEq for Outcome

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Outcome