Struct UpDownCounter

#[non_exhaustive]
pub struct UpDownCounter<T>(/* private fields */);

Available on crate feature metrics only.

An instrument that records increasing or decreasing values.

UpDownCounter can be cloned to create multiple handles to the same instrument. If a UpDownCounter needs to be shared, users are recommended to clone the UpDownCounter instead of creating duplicate UpDownCounters for the same metric. Creating duplicate UpDownCounters for the same metric could lower SDK performance.

Implementations

impl<T> UpDownCounter<T>

pub fn new(inner: Arc<dyn SyncInstrument<T> + Send + Sync>) -> Self

Create a new up down counter.

pub fn add(&self, value: T, attributes: &[KeyValue])

Records an increment or decrement to the counter.

Trait Implementations

impl<T: Clone> Clone for UpDownCounter<T>

fn clone(&self) -> UpDownCounter<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Debug for UpDownCounter<T>

where T: Debug,

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

Formats the value using the given formatter.