Enum MetricId 

pub enum MetricId {
    Builtin(BuiltinMetric),
    Dynamic(Cow<'static, str>),
}

A metric identifier accepted by every metric accessor via impl Into<MetricId>: a typed BuiltinMetric (the common, discoverable, typo-proof case) or a dynamic scheduler-runtime / payload string (the open keyspace). One call shape for both — phase_metric(BuiltinMetric::X) and phase_metric("runtime_key").

Variants

Builtin(BuiltinMetric)

A compile-time-known built-in metric (carries its registry kind via BuiltinMetric::def).

Dynamic(Cow<'static, str>)

A scheduler-runtime / payload-supplied key not in the built-in registry.

Implementations

impl MetricId

pub fn as_str(&self) -> &str

The wire-name key — into super::METRICS and the ext-metrics maps. For a Builtin this is the inner BuiltinMetric::wire_name; for a Dynamic it is the raw key string.

pub fn def(&self) -> Option<&'static MetricDef>

The registry definition if this id names a REGISTERED metric — Some for every Builtin; None for a genuine scheduler-runtime key. Via the From impls a registered name canonicalizes to Builtin, so a Dynamic reached through the public impl Into<MetricId> path never holds a registered name and resolves to None here; the Dynamic registry lookup is a defensive fallback for a directly-constructed MetricId::Dynamic. The GUARDRAIL: a None here means no declared kind, so the caller must not aggregate the value as a guessed kind (resolve-by-name or fold conservatively).

Trait Implementations

impl Clone for MetricId

fn clone(&self) -> MetricId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MetricId

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

Formats the value using the given formatter.

impl From<&BuiltinMetric> for MetricId

fn from(b: &BuiltinMetric) -> Self

Borrowed-BuiltinMetric convenience — sweeping BuiltinMetric::ALL yields &BuiltinMetric; it is Copy, so this is a trivial copy-then-wrap.

impl From<&String> for MetricId

fn from(s: &String) -> Self

Borrowed-String convenience — iterating owned metric names (a HashMap<String, _>’s keys, a Vec<String>) yields &String; delegates to the &str canonicalization.

impl From<&str> for MetricId

fn from(s: &str) -> Self

Canonicalize a string: if it names a built-in, yield the typed Builtin (so a known reached by string still carries the typed identity + kind); otherwise Dynamic. A non-built-in &str is owned (the dynamic path is not hot; correctness over the micro-alloc).

impl From<BuiltinMetric> for MetricId

fn from(b: BuiltinMetric) -> Self

Converts to this type from the input type.

impl From<String> for MetricId

fn from(s: String) -> Self

Converts to this type from the input type.

impl Hash for MetricId

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 MetricId

fn eq(&self, other: &MetricId) -> 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 Eq for MetricId

impl StructuralPartialEq for MetricId