Struct opentelemetry::trace::NoopTracer

pub struct NoopTracer { /* fields omitted */ }

This is supported on crate feature trace only.

A no-op instance of a Tracer.

Implementations

impl NoopTracer

pub fn new() -> Self

Create a new no-op tracer

Trait Implementations

impl Clone for NoopTracer

fn clone(&self) -> NoopTracer

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for NoopTracer

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

Formats the value using the given formatter.

impl Default for NoopTracer

fn default() -> NoopTracer

Returns the “default value” for a type.

impl Tracer for NoopTracer

fn invalid(&self) -> Self::Span

Returns a NoopSpan as they are always invalid.

fn start_with_context<T>(&self, name: T, cx: Context) -> Self::Span where
    T: Into<Cow<'static, str>>, 

Starts a new NoopSpan with a given context.

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

fn span_builder<T>(&self, name: T) -> SpanBuilder where
    T: Into<Cow<'static, str>>, 

Starts a SpanBuilder.

fn build(&self, builder: SpanBuilder) -> 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.

type Span = NoopSpan

The Span type used by this Tracer.

fn start<T>(&self, name: T) -> Self::Span where
    T: Into<Cow<'static, str>>, 

Starts a new Span.

fn in_span<T, F>(&self, name: &'static str, f: F) -> T where
    F: FnOnce(Context) -> T,
    Self::Span: Send + Sync, 

Start a new span and execute the given closure with reference to the span’s context.

fn with_span<T, F>(&self, span: Self::Span, f: F) -> T where
    F: FnOnce(Context) -> T,
    Self::Span: Send + Sync, 

Start a new span and execute the given closure with reference to the span’s context.