Struct MetricLabelsManager 

pub struct MetricLabelsManager { /* private fields */ }

Manages in-flight per-metric label fetches using promises.

Similar to LabelsManager, but specifically for fetching label names and values for a single metric.

Implementations

impl MetricLabelsManager

pub fn new() -> Self

Create a new metric labels manager.

pub fn is_fetching(&self) -> bool

Check if a fetch is currently in flight.

pub fn fetching_metric(&self) -> Option<&str>

Get the metric name currently being fetched.

pub fn fetch<C: MetricsClient + ?Sized>( &mut self, client: &C, metric: &str, ctx: &Context, )

Fetch labels for a specific metric.

If a fetch is already in flight for a different metric, it is cancelled.

pub fn poll(&mut self) -> Option<(String, MetricLabelsResult)>

Poll for the fetch result.

Returns Some((metric_name, result)) if a fetch just completed, None otherwise.

pub fn cancel(&mut self)

Cancel any pending fetch.

Trait Implementations

impl Default for MetricLabelsManager

fn default() -> Self

Returns the “default value” for a type.