[−][src]Trait opentelemetry::api::metrics::measure::Measure

pub trait Measure<T, LS>: Instrument<LS> where
    T: Into<MeasurementValue>,
    LS: LabelSet, {
    type Handle: MeasureHandle<T>;
    fn measurement(&self, value: T) -> Measurement<LS>;
    fn acquire_handle(&self, labels: &LS) -> Self::Handle;

    fn record(&self, value: T, label_set: &LS) { ... }
}

An interface for recording values where the count or rate of events is meaningful.

Associated Types

`type Handle: MeasureHandle<T>`

The handle type for the implementing Measure.

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Required methods

`fn measurement(&self, value: T) -> Measurement<LS>`

Creates a Measurement object to be used by a Meter when batch recording.

`fn acquire_handle(&self, labels: &LS) -> Self::Handle`

Creates a handle for this measure. The labels should contain the keys and values for each key specified in the LabelSet.

If the labels do not contain a value for the key specified in the LabelSet, then the missing value will be treated as unspecified.

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Provided methods

`fn record(&self, value: T, label_set: &LS)`

Records the passed value to the value of the measure. The labels should contain the keys and values for each key specified in the LabelSet.

If the labels do not contain a value for the key specified in the LabelSet, then the missing value will be treated as unspecified.

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Implementors

`impl Measure<f64, HashMap<Cow<'static, str>, Cow<'static, str>, RandomState>> for HistogramVec`[src]

`type Handle = MeasureHandle`

`fn measurement(&self, value: f64) -> Measurement<LabelSet>`[src]

Creates a Measurement object to be used by a Meter when batch recording.

`fn acquire_handle(&self, labels: &LabelSet) -> Self::Handle`[src]

Creates a handle for this instrument.

`impl Measure<f64, NoopLabelSet> for NoopMeasure<f64>`[src]

`type Handle = NoopHandle<f64>`

`fn measurement(&self, value: f64) -> Measurement<NoopLabelSet>`[src]

Returns a no-op Measurement.

`fn acquire_handle(&self, _labels: &NoopLabelSet) -> Self::Handle`[src]

Returns a NoopHandle

`impl Measure<i64, HashMap<Cow<'static, str>, Cow<'static, str>, RandomState>> for IntMeasure`[src]

`type Handle = IntMeasureHandle`

`fn measurement(&self, value: i64) -> Measurement<LabelSet>`[src]

Creates a Measurement object to be used by a Meter when batch recording.

`fn acquire_handle(&self, labels: &LabelSet) -> Self::Handle`[src]

Creates a handle for this instrument.

`impl Measure<i64, NoopLabelSet> for NoopMeasure<i64>`[src]

`type Handle = NoopHandle<i64>`

`fn measurement(&self, value: i64) -> Measurement<NoopLabelSet>`[src]

Returns a no-op Measurement.

`fn acquire_handle(&self, _labels: &NoopLabelSet) -> Self::Handle`[src]

Returns a NoopHandle

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