Enum MetricKind 

pub enum MetricKind {
    Counter,
    Gauge,
    Timer,
    Rate,
    Histogram,
}

Metric kind tag stored alongside help/unit metadata.

Used by exporters to emit the correct # TYPE line and to choose a rendering strategy (e.g., counter vs. gauge semantics).

Variants

Counter

Monotonic counter (resets only on process restart / explicit reset).

Gauge

Arbitrary-direction gauge.

Timer

Timing distribution.

Rate

Rate over a tumbling window.

Histogram

Histogram of observations bucketed by value.

Implementations

impl MetricKind

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

Lower-case Prometheus/OpenMetrics # TYPE token.

Trait Implementations

impl Clone for MetricKind

fn clone(&self) -> MetricKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MetricKind

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

Formats the value using the given formatter.

impl Hash for MetricKind

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 MetricKind

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for MetricKind

impl Eq for MetricKind

impl StructuralPartialEq for MetricKind