Struct Filter 

pub struct Filter { /* private fields */ }

Parses and evaluates METRICS_FILTER-style directives.

Filter string: comma-separated pattern=LEVEL directives, last-match wins, a metric is exposed when its own level is at or below the threshold.

Implementations

impl Filter

pub fn parse(s: &str) -> Self

Parses a directive string, ignoring the METRICS_FILTER env var; use Filter::resolve to honour it.

pub fn is_exposed(&self, name: &str, module: &str, level: MetricLevel) -> bool

Returns true if a registered metric named name in module at verbosity level should be exposed when gathering.

pub fn resolve(fallback: Option<&str>) -> Self

Resolves the metrics filter from fallback (the node config) and the METRICS_FILTER env variables. If the same key exists in both, the env var takes precedence.

Trait Implementations

impl Default for Filter

fn default() -> Filter

Returns the “default value” for a type.