[−][src]Trait opentelemetry::api::metrics::counter::Counter

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

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

An interface for recording values where the sum is of primary interest.

Associated Types

`type Handle: CounterHandle<T>`

The handle type for the implementing Counter.

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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 counter. 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 add(&self, value: T, label_set: &LS)`

Adds the value to the Counter's sum.

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Implementors

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

`type Handle = CounterHandle`

`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 Counter<i64, HashMap<Cow<'static, str>, Cow<'static, str>, RandomState>> for IntCounterVec`[src]

`type Handle = IntCounterHandle`

Prometheus' CounterHandle

`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<T: Into<MeasurementValue> + 'static> Counter<T, NoopLabelSet> for NoopCounter<T>`[src]

`type Handle = NoopHandle<T>`

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

Returns a no-op Measurement.

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

Returns a NoopHandle

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