Trait opentelemetry::trace::TraceContextExt [−][src]
pub trait TraceContextExt { fn current_with_span<T: Span + Send + Sync + 'static>(span: T) -> Self; fn with_span<T: Span + Send + Sync + 'static>(&self, span: T) -> Self; fn span(&self) -> SpanRef<'_>; fn has_active_span(&self) -> bool; fn with_remote_span_context(&self, span_context: SpanContext) -> Self; }
This is supported on crate feature
trace
only.Expand description
Methods for storing and retrieving trace data in a context.
Required methods
fn current_with_span<T: Span + Send + Sync + 'static>(span: T) -> Self
[src]
fn current_with_span<T: Span + Send + Sync + 'static>(span: T) -> Self
[src]Returns a clone of the current context with the included span.
This is useful for building tracers.
Returns a clone of this context with the included span.
This is useful for building tracers.
Returns a reference to this context’s span, or the default no-op span if none has been set.
Examples
use opentelemetry::{ sdk::trace as sdktrace, trace::{SpanContext, TraceContextExt, Tracer, TracerProvider}, Context, }; // returns a reference to an empty span by default assert_eq!(Context::current().span().span_context(), &SpanContext::empty_context()); sdktrace::TracerProvider::default().get_tracer("my-component", None).in_span("my-span", |cx| { // Returns a reference to the current span if set assert_ne!(cx.span().span_context(), &SpanContext::empty_context()); });
fn has_active_span(&self) -> bool
[src]
fn has_active_span(&self) -> bool
[src]Used to see if a span has been marked as active
This is useful for building tracers.
fn with_remote_span_context(&self, span_context: SpanContext) -> Self
[src]
fn with_remote_span_context(&self, span_context: SpanContext) -> Self
[src]Returns a copy of this context with the span context included.
This is useful for building propagators.