Struct LabelsManager 

pub struct LabelsManager { /* private fields */ }

Manages in-flight label/metadata fetches using promises.

Similar to QueryManager, but for metadata operations like fetching label names, label values, and metric names.

Example

let mut manager = LabelsManager::new();

// Fetch all label names
manager.fetch_label_names(&client, &ctx);

// In update loop
if let Some(result) = manager.poll() {
    match result {
        Ok(labels) => { /* update autocomplete */ }
        Err(e) => { /* show error */ }
    }
}

Implementations

impl LabelsManager

pub fn new() -> Self

Create a new labels manager.

pub fn is_fetching(&self) -> bool

Check if a fetch is currently in flight.

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

Fetch all label names from the backend.

If a fetch is already in flight, this does nothing.

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

Fetch all values for a specific label.

If a fetch is already in flight, this does nothing.

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

Fetch all metric names from the backend.

If a fetch is already in flight, this does nothing.

pub fn poll(&mut self) -> Option<LabelsResult>

Poll for the fetch result.

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

pub fn cancel(&mut self)

Cancel any pending fetch.

Trait Implementations

impl Default for LabelsManager

fn default() -> Self

Returns the “default value” for a type.