metrics_util::registry

Trait Storage

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pub trait Storage<K> {
    type Counter: CounterFn + Clone;
    type Gauge: GaugeFn + Clone;
    type Histogram: HistogramFn + Clone;

    // Required methods
    fn counter(&self, key: &K) -> Self::Counter;
    fn gauge(&self, key: &K) -> Self::Gauge;
    fn histogram(&self, key: &K) -> Self::Histogram;
}
Available on crate feature registry only.
Expand description

Defines the underlying storage for metrics as well as how to create them.

Required Associated Types§

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type Counter: CounterFn + Clone

The type used for counters.

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type Gauge: GaugeFn + Clone

The type used for gauges.

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type Histogram: HistogramFn + Clone

The type used for histograms.

Required Methods§

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fn counter(&self, key: &K) -> Self::Counter

Creates an empty counter.

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fn gauge(&self, key: &K) -> Self::Gauge

Creates an empty gauge.

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fn histogram(&self, key: &K) -> Self::Histogram

Creates an empty histogram.

Implementors§