[−][src]Struct opentelemetry::sdk::propagation::TextMapCompositePropagator
This is supported on crate feature
trace
only.Composite propagator
A propagator that chains multiple TextMapPropagator
propagators together,
injecting or extracting by their respective HTTP header names.
Injection and extraction from this propagator will preserve the order of the injectors and extractors passed in during initialization.
Examples
use opentelemetry::{ baggage::BaggageExt, propagation::TextMapPropagator, trace::{TraceContextExt, Tracer, TracerProvider}, Context, KeyValue, }; use opentelemetry::sdk::propagation::{ BaggagePropagator, TextMapCompositePropagator, TraceContextPropagator, }; use opentelemetry::sdk::trace as sdktrace; use std::collections::HashMap; // First create 1 or more propagators let baggage_propagator = BaggagePropagator::new(); let trace_context_propagator = TraceContextPropagator::new(); // Then create a composite propagator let composite_propagator = TextMapCompositePropagator::new(vec![ Box::new(baggage_propagator), Box::new(trace_context_propagator), ]); // Then for a given implementation of `Injector` let mut injector = HashMap::new(); // And a given span let example_span = sdktrace::TracerProvider::default() .get_tracer("example-component", None) .start("span-name"); // with the current context, call inject to add the headers composite_propagator.inject_context( &Context::current_with_span(example_span) .with_baggage(vec![KeyValue::new("test", "example")]), &mut injector, ); // The injector now has both `baggage` and `traceparent` headers assert!(injector.get("baggage").is_some()); assert!(injector.get("traceparent").is_some());
Implementations
impl TextMapCompositePropagator
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pub fn new(propagators: Vec<Box<dyn TextMapPropagator + Send + Sync>>) -> Self
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Constructs a new propagator out of instances of TextMapPropagator
.
Trait Implementations
impl Debug for TextMapCompositePropagator
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impl TextMapPropagator for TextMapCompositePropagator
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pub fn inject_context(&self, context: &Context, injector: &mut dyn Injector)
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Encodes the values of the Context
and injects them into the Injector
.
pub fn extract_with_context(
&self,
cx: &Context,
extractor: &dyn Extractor
) -> Context
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&self,
cx: &Context,
extractor: &dyn Extractor
) -> Context
Retrieves encoded Context
information using the Extractor
. If no data was
retrieved OR if the retrieved data is invalid, then the current Context
is
returned.
pub fn fields(&self) -> FieldIter<'_>ⓘ
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pub fn inject(&self, injector: &mut dyn Injector)
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pub fn extract(&self, extractor: &dyn Extractor) -> Context
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Auto Trait Implementations
impl !RefUnwindSafe for TextMapCompositePropagator
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impl Send for TextMapCompositePropagator
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impl Sync for TextMapCompositePropagator
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impl Unpin for TextMapCompositePropagator
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impl !UnwindSafe for TextMapCompositePropagator
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T> Instrument for T
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pub fn instrument(self, span: Span) -> Instrumented<Self>
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pub fn in_current_span(self) -> Instrumented<Self>
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impl<T> Instrument for T
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pub fn instrument(self, span: Span) -> Instrumented<Self>
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pub fn in_current_span(self) -> Instrumented<Self>
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> IntoRequest<T> for T
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pub fn into_request(self) -> Request<T>
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impl<T> Same<T> for T
type Output = T
Should always be Self
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,