Struct opentelemetry::metrics::ObservableGauge

pub struct ObservableGauge<T>(_);

Available on crate feature metrics only.

An instrument that records independent readings.

Implementations

impl<T> ObservableGauge<T>

pub fn observe(&self, cx: &Context, value: 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.

impl<T> ObservableGauge<T>

pub fn new(inner: Arc<dyn AsyncGauge<T> + 'static>) -> ObservableGauge<T>

Create a new gauge

Trait Implementations

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

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<(), Error>

Formats the value using the given formatter.

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

type Error = MetricsError

The type returned in the event of a conversion error.

fn try_from( builder: InstrumentBuilder<'_, ObservableGauge<f64>> ) -> Result<ObservableGauge<f64>, <ObservableGauge<f64> as TryFrom<InstrumentBuilder<'_, ObservableGauge<f64>>>>::Error>

Performs the conversion.

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

type Error = MetricsError

The type returned in the event of a conversion error.

fn try_from( builder: InstrumentBuilder<'_, ObservableGauge<i64>> ) -> Result<ObservableGauge<i64>, <ObservableGauge<i64> as TryFrom<InstrumentBuilder<'_, ObservableGauge<i64>>>>::Error>

Performs the conversion.

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

type Error = MetricsError

The type returned in the event of a conversion error.

fn try_from( builder: InstrumentBuilder<'_, ObservableGauge<u64>> ) -> Result<ObservableGauge<u64>, <ObservableGauge<u64> as TryFrom<InstrumentBuilder<'_, ObservableGauge<u64>>>>::Error>

Performs the conversion.