Struct prometheus::PullingGauge

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pub struct PullingGauge { /* private fields */ }
Expand description

A Gauge that returns the value from a provided function on every collect run.

This metric is the equivalant of Go’s https://pkg.go.dev/github.com/prometheus/client_golang@v1.11.0/prometheus#GaugeFunc

§Examples


let registry = Registry::new();
let gauge = PullingGauge::new(
    "available_parallelism",
    "The available parallelism, usually the numbers of logical cores.",
    Box::new(|| available_parallelism())
).unwrap();
registry.register(Box::new(gauge));

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impl PullingGauge

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pub fn new<S1: Into<String>, S2: Into<String>>( name: S1, help: S2, value: Box<dyn Fn() -> f64 + Send + Sync>, ) -> Result<Self>

Create a new PullingGauge.

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impl Clone for PullingGauge

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fn clone(&self) -> PullingGauge

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Collector for PullingGauge

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fn desc(&self) -> Vec<&Desc>

Return descriptors for metrics.
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fn collect(&self) -> Vec<MetricFamily>

Collect metrics.
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impl Debug for PullingGauge

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

Formats the value using the given formatter. Read more

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Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.