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

Provides access to instrument instances for recording metrics.

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impl Meter

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pub fn u64_counter( &self, name: impl Into<Cow<'static, str>> ) -> InstrumentBuilder<'_, Counter<u64>>

creates an instrument builder for recording increasing values.

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pub fn f64_counter( &self, name: impl Into<Cow<'static, str>> ) -> InstrumentBuilder<'_, Counter<f64>>

creates an instrument builder for recording increasing values.

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pub fn u64_observable_counter( &self, name: impl Into<Cow<'static, str>> ) -> AsyncInstrumentBuilder<'_, ObservableCounter<u64>, u64>

creates an instrument builder for recording increasing values via callback.

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pub fn f64_observable_counter( &self, name: impl Into<Cow<'static, str>> ) -> AsyncInstrumentBuilder<'_, ObservableCounter<f64>, f64>

creates an instrument builder for recording increasing values via callback.

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pub fn i64_up_down_counter( &self, name: impl Into<Cow<'static, str>> ) -> InstrumentBuilder<'_, UpDownCounter<i64>>

creates an instrument builder for recording changes of a value.

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pub fn f64_up_down_counter( &self, name: impl Into<Cow<'static, str>> ) -> InstrumentBuilder<'_, UpDownCounter<f64>>

creates an instrument builder for recording changes of a value.

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pub fn i64_observable_up_down_counter( &self, name: impl Into<Cow<'static, str>> ) -> AsyncInstrumentBuilder<'_, ObservableUpDownCounter<i64>, i64>

creates an instrument builder for recording changes of a value via callback.

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pub fn f64_observable_up_down_counter( &self, name: impl Into<Cow<'static, str>> ) -> AsyncInstrumentBuilder<'_, ObservableUpDownCounter<f64>, f64>

creates an instrument builder for recording changes of a value via callback.

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pub fn u64_observable_gauge( &self, name: impl Into<Cow<'static, str>> ) -> AsyncInstrumentBuilder<'_, ObservableGauge<u64>, u64>

creates an instrument builder for recording the current value via callback.

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pub fn i64_observable_gauge( &self, name: impl Into<Cow<'static, str>> ) -> AsyncInstrumentBuilder<'_, ObservableGauge<i64>, i64>

creates an instrument builder for recording the current value via callback.

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pub fn f64_observable_gauge( &self, name: impl Into<Cow<'static, str>> ) -> AsyncInstrumentBuilder<'_, ObservableGauge<f64>, f64>

creates an instrument builder for recording the current value via callback.

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pub fn f64_histogram( &self, name: impl Into<Cow<'static, str>> ) -> InstrumentBuilder<'_, Histogram<f64>>

creates an instrument builder for recording a distribution of values.

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pub fn u64_histogram( &self, name: impl Into<Cow<'static, str>> ) -> InstrumentBuilder<'_, Histogram<u64>>

creates an instrument builder for recording a distribution of values.

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pub fn i64_histogram( &self, name: impl Into<Cow<'static, str>> ) -> InstrumentBuilder<'_, Histogram<i64>>

creates an instrument builder for recording a distribution of values.

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pub fn register_callback<F>( &self, instruments: &[Arc<dyn Any>], callback: F ) -> Result<Box<dyn CallbackRegistration>>where F: Fn(&dyn Observer) + Send + Sync + 'static,

Registers a callback to be called during the collection of a measurement cycle.

The instruments passed as arguments to be registered are the only instruments that may observe values.

If no instruments are passed, the callback will not be registered.

Trait Implementations§

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impl Clone for Meter

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fn clone(&self) -> Meter

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 Debug for Meter

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl !RefUnwindSafe for Meter

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impl Send for Meter

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impl Sync for Meter

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impl Unpin for Meter

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impl !UnwindSafe for Meter

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FutureExt for T

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fn with_context(self, otel_cx: Context) -> WithContext<Self>

Attaches the provided Context to this type, returning a WithContext wrapper. Read more
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fn with_current_context(self) -> WithContext<Self>

Attaches the current Context to this type, returning a WithContext wrapper. Read more
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impl<T, U> Into<U> for Twhere 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 Twhere 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 Twhere 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 Twhere 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.