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

A no-op instance of a Tracer.

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impl NoopTracer

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pub fn new() -> Self

Create a new no-op tracer

Trait Implementations§

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impl Clone for NoopTracer

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fn clone(&self) -> NoopTracer

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 NoopTracer

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

Formats the value using the given formatter. Read more
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impl Default for NoopTracer

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fn default() -> NoopTracer

Returns the “default value” for a type. Read more
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impl Tracer for NoopTracer

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fn build_with_context( &self, _builder: SpanBuilder, parent_cx: &Context ) -> Self::Span

Builds a NoopSpan from a SpanBuilder.

If the span builder or the context’s current span contains a valid span context, it is propagated.

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type Span = NoopSpan

The Span type used by this tracer.
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fn start<T>(&self, name: T) -> Self::Spanwhere T: Into<Cow<'static, str>>,

Starts a new Span. Read more
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fn start_with_context<T>(&self, name: T, parent_cx: &Context) -> Self::Spanwhere T: Into<Cow<'static, str>>,

Starts a new Span with a given context. Read more
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fn span_builder<T>(&self, name: T) -> SpanBuilderwhere T: Into<Cow<'static, str>>,

Creates a span builder. Read more
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fn build(&self, builder: SpanBuilder) -> Self::Span

Start a Span from a SpanBuilder.
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fn in_span<T, F, N>(&self, name: N, f: F) -> Twhere F: FnOnce(Context) -> T, N: Into<Cow<'static, str>>, Self::Span: Send + Sync + 'static,

Start a new span and execute the given closure with reference to the context in which the span is active. Read more

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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<S, T> ObjectSafeTracer for Twhere S: Span + Send + Sync + 'static, T: Tracer<Span = S>,

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fn build_with_context_boxed( &self, builder: SpanBuilder, parent_cx: &Context ) -> Box<dyn ObjectSafeSpan + Send + Sync>

Returns a trait object so the underlying implementation can be swapped out at runtime.

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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.