#[non_exhaustive]
pub struct AsyncInstrumentBuilder<'a, I, M>
where I: AsyncInstrument<M>,
{ pub instrument_provider: &'a dyn InstrumentProvider, pub name: Cow<'static, str>, pub description: Option<Cow<'static, str>>, pub unit: Option<Cow<'static, str>>, pub callbacks: Vec<Box<dyn Fn(&dyn AsyncInstrument<M>) + Sync + Send>>, /* private fields */ }
Expand description

Configuration for building an async instrument.

Fields (Non-exhaustive)§

This struct is marked as non-exhaustive
Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.
§instrument_provider: &'a dyn InstrumentProvider

Instrument provider is used to create the instrument.

§name: Cow<'static, str>

Name of the instrument.

§description: Option<Cow<'static, str>>

Description of the instrument.

§unit: Option<Cow<'static, str>>

Unit of the instrument.

§callbacks: Vec<Box<dyn Fn(&dyn AsyncInstrument<M>) + Sync + Send>>

Callbacks to be called for this instrument.

Implementations§

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impl<'a, I, M> AsyncInstrumentBuilder<'a, I, M>
where I: TryFrom<AsyncInstrumentBuilder<'a, I, M>, Error = MetricsError> + AsyncInstrument<M>,

pub fn with_description<S>( self, description: S, ) -> AsyncInstrumentBuilder<'a, I, M>
where S: Into<Cow<'static, str>>,

Set the description for this instrument

pub fn with_unit<S>(self, unit: S) -> AsyncInstrumentBuilder<'a, I, M>
where S: Into<Cow<'static, str>>,

Set the unit for this instrument.

Unit is case sensitive(kb is not the same as kB).

Unit must be:

  • ASCII string
  • No longer than 63 characters

pub fn with_callback<F>(self, callback: F) -> AsyncInstrumentBuilder<'a, I, M>
where F: Fn(&dyn AsyncInstrument<M>) + Send + Sync + 'static,

Set the callback to be called for this instrument.

pub fn try_init(self) -> Result<I, MetricsError>

Validate the instrument configuration and creates a new instrument.

pub fn init(self) -> I

Creates a new instrument.

Validate the instrument configuration and creates a new instrument.

§Panics

Panics if the instrument cannot be created. Use try_init if you want to handle errors.

Trait Implementations§

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impl<I, M> Debug for AsyncInstrumentBuilder<'_, I, M>
where I: AsyncInstrument<M>,

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

Formats the value using the given formatter. Read more
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impl TryFrom<AsyncInstrumentBuilder<'_, ObservableCounter<f64>, f64>> for ObservableCounter<f64>

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type Error = MetricsError

The type returned in the event of a conversion error.
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fn try_from( builder: AsyncInstrumentBuilder<'_, ObservableCounter<f64>, f64>, ) -> Result<ObservableCounter<f64>, <ObservableCounter<f64> as TryFrom<AsyncInstrumentBuilder<'_, ObservableCounter<f64>, f64>>>::Error>

Performs the conversion.
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impl TryFrom<AsyncInstrumentBuilder<'_, ObservableCounter<u64>, u64>> for ObservableCounter<u64>

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type Error = MetricsError

The type returned in the event of a conversion error.
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fn try_from( builder: AsyncInstrumentBuilder<'_, ObservableCounter<u64>, u64>, ) -> Result<ObservableCounter<u64>, <ObservableCounter<u64> as TryFrom<AsyncInstrumentBuilder<'_, ObservableCounter<u64>, u64>>>::Error>

Performs the conversion.
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impl TryFrom<AsyncInstrumentBuilder<'_, ObservableGauge<f64>, f64>> for ObservableGauge<f64>

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type Error = MetricsError

The type returned in the event of a conversion error.
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fn try_from( builder: AsyncInstrumentBuilder<'_, ObservableGauge<f64>, f64>, ) -> Result<ObservableGauge<f64>, <ObservableGauge<f64> as TryFrom<AsyncInstrumentBuilder<'_, ObservableGauge<f64>, f64>>>::Error>

Performs the conversion.
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impl TryFrom<AsyncInstrumentBuilder<'_, ObservableGauge<i64>, i64>> for ObservableGauge<i64>

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type Error = MetricsError

The type returned in the event of a conversion error.
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fn try_from( builder: AsyncInstrumentBuilder<'_, ObservableGauge<i64>, i64>, ) -> Result<ObservableGauge<i64>, <ObservableGauge<i64> as TryFrom<AsyncInstrumentBuilder<'_, ObservableGauge<i64>, i64>>>::Error>

Performs the conversion.
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impl TryFrom<AsyncInstrumentBuilder<'_, ObservableGauge<u64>, u64>> for ObservableGauge<u64>

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type Error = MetricsError

The type returned in the event of a conversion error.
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fn try_from( builder: AsyncInstrumentBuilder<'_, ObservableGauge<u64>, u64>, ) -> Result<ObservableGauge<u64>, <ObservableGauge<u64> as TryFrom<AsyncInstrumentBuilder<'_, ObservableGauge<u64>, u64>>>::Error>

Performs the conversion.
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impl TryFrom<AsyncInstrumentBuilder<'_, ObservableUpDownCounter<f64>, f64>> for ObservableUpDownCounter<f64>

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type Error = MetricsError

The type returned in the event of a conversion error.
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fn try_from( builder: AsyncInstrumentBuilder<'_, ObservableUpDownCounter<f64>, f64>, ) -> Result<ObservableUpDownCounter<f64>, <ObservableUpDownCounter<f64> as TryFrom<AsyncInstrumentBuilder<'_, ObservableUpDownCounter<f64>, f64>>>::Error>

Performs the conversion.
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impl TryFrom<AsyncInstrumentBuilder<'_, ObservableUpDownCounter<i64>, i64>> for ObservableUpDownCounter<i64>

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type Error = MetricsError

The type returned in the event of a conversion error.
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fn try_from( builder: AsyncInstrumentBuilder<'_, ObservableUpDownCounter<i64>, i64>, ) -> Result<ObservableUpDownCounter<i64>, <ObservableUpDownCounter<i64> as TryFrom<AsyncInstrumentBuilder<'_, ObservableUpDownCounter<i64>, i64>>>::Error>

Performs the conversion.

Auto Trait Implementations§

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impl<'a, I, M> Freeze for AsyncInstrumentBuilder<'a, I, M>

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impl<'a, I, M> !RefUnwindSafe for AsyncInstrumentBuilder<'a, I, M>

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impl<'a, I, M> !Send for AsyncInstrumentBuilder<'a, I, M>

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impl<'a, I, M> !Sync for AsyncInstrumentBuilder<'a, I, M>

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impl<'a, I, M> Unpin for AsyncInstrumentBuilder<'a, I, M>
where I: Unpin,

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impl<'a, I, M> !UnwindSafe for AsyncInstrumentBuilder<'a, I, M>

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fn instrument(self, span: Span) -> Instrumented<Self>

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