Struct ObservableGauge

pub struct ObservableGauge<T>(/* private fields */);

An async instrument that records independent readings.

Implementations

impl<T> ObservableGauge<T>

pub fn observe(&self, measurement: T, attributes: &[KeyValue])

Records the state of the instrument.

It is only valid to call this within a callback. If called outside of the registered callback it should have no effect on the instrument, and an error will be reported via the error handler.

pub fn as_any(&self) -> Arc<dyn Any>

Used by SDKs to downcast instruments in callbacks.

impl<T> ObservableGauge<T>

pub fn new(inner: Arc<dyn AsyncInstrument<T>>) -> Self

Create a new gauge

Trait Implementations

impl<M> AsyncInstrument<M> for ObservableGauge<M>

fn observe(&self, measurement: M, attributes: &[KeyValue])

Observes the state of the instrument.

fn as_any(&self) -> Arc<dyn Any>

Used for SDKs to downcast instruments in callbacks.

impl<T: Clone> Clone for ObservableGauge<T>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Debug for ObservableGauge<T>

where T: Debug,

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

Formats the value using the given formatter.

impl TryFrom<AsyncInstrumentBuilder<'_, ObservableGauge<f64>, f64>> for ObservableGauge<f64>

type Error = MetricsError

The type returned in the event of a conversion error.

fn try_from( builder: AsyncInstrumentBuilder<'_, ObservableGauge<f64>, f64>, ) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<AsyncInstrumentBuilder<'_, ObservableGauge<i64>, i64>> for ObservableGauge<i64>

type Error = MetricsError

The type returned in the event of a conversion error.

fn try_from( builder: AsyncInstrumentBuilder<'_, ObservableGauge<i64>, i64>, ) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<AsyncInstrumentBuilder<'_, ObservableGauge<u64>, u64>> for ObservableGauge<u64>

type Error = MetricsError

The type returned in the event of a conversion error.

fn try_from( builder: AsyncInstrumentBuilder<'_, ObservableGauge<u64>, u64>, ) -> Result<Self, Self::Error>

Performs the conversion.