Struct ExternalOperation 

pub struct ExternalOperation(/* private fields */);

A static, low-cardinality label for an operation owned outside this crate.

A crate built on the runtime reports failures of its own operations with RuntimeOperation::External, so this crate does not need a variant for every consumer. A label is a string literal in lowercase kebab case: it stays aggregatable and cannot carry request, path, or configuration text.

Implementations

impl ExternalOperation

pub const MAX_LABEL_BYTES: usize = 64

The longest accepted label, in bytes.

pub const fn new(label: &'static str) -> Self

Creates a label for an operation owned outside this crate.

Define the result as a constant so an invalid label fails compilation instead of panicking at run time.

Panics

Panics when label is empty, longer than Self::MAX_LABEL_BYTES, starts or ends with a hyphen, or contains anything other than lowercase ASCII letters, digits, and hyphens. Labels are programmer-owned static identifiers, not runtime input.

pub const fn label(self) -> &'static str

Returns the label reported in diagnostics.

Trait Implementations

impl Clone for ExternalOperation

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 ExternalOperation

impl Debug for ExternalOperation

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

Formats the value using the given formatter.

impl Eq for ExternalOperation

impl Hash for ExternalOperation

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ExternalOperation

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ExternalOperation