Struct BackendMetricDescriptor 

pub struct BackendMetricDescriptor {
    pub metric: BackendMetric,
    pub name: &'static str,
    pub unit: BackendMetricUnit,
    pub kind: BackendMetricKind,
    pub labels: &'static [BackendMetricLabel],
    pub buckets: &'static [u64],
    pub update_point: BackendMetricUpdatePoint,
    pub max_series: usize,
}

One backend metric’s immutable registration metadata.

Fields

metric: BackendMetric

Stable identity used by the owning snapshot projection. Exporters iterate descriptors and never infer a metric from its display name.

name: &'static str

Stable metric registration name used by exporters.

unit: BackendMetricUnit

Export unit, including the conversion target for duration samples.

kind: BackendMetricKind

Storage and exporter aggregation semantics.

labels: &'static [BackendMetricLabel]

Closed label dimensions in the order used by projected sample attributes.

buckets: &'static [u64]

Internal histogram boundary values. Duration bounds remain exact nanoseconds until project_backend_duration_histogram converts them to this descriptor’s declared export unit.

update_point: BackendMetricUpdatePoint

Runtime lifecycle transition that records this metric.

max_series: usize

Maximum accepted series count across the closed label domains.

Trait Implementations

impl Clone for BackendMetricDescriptor

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 BackendMetricDescriptor

impl Debug for BackendMetricDescriptor

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

Formats the value using the given formatter.

impl Eq for BackendMetricDescriptor

impl PartialEq for BackendMetricDescriptor

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BackendMetricDescriptor