Struct opentelemetry::sdk::propagation::TextMapCompositePropagator [−][src]
pub struct TextMapCompositePropagator { /* fields omitted */ }
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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impl TextMapCompositePropagator
[src]pub fn new(propagators: Vec<Box<dyn TextMapPropagator + Send + Sync>>) -> Self
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pub fn new(propagators: Vec<Box<dyn TextMapPropagator + Send + Sync>>) -> Self
[src]Constructs a new propagator out of instances of TextMapPropagator
.
Trait Implementations
impl Debug for TextMapCompositePropagator
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impl Debug for TextMapCompositePropagator
[src]impl TextMapPropagator for TextMapCompositePropagator
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impl TextMapPropagator for TextMapCompositePropagator
[src]fn inject_context(&self, context: &Context, injector: &mut dyn Injector)
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fn inject_context(&self, context: &Context, injector: &mut dyn Injector)
[src]Encodes the values of the Context
and injects them into the Injector
.
fn extract_with_context(
&self,
cx: &Context,
extractor: &dyn Extractor
) -> Context
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fn extract_with_context(
&self,
cx: &Context,
extractor: &dyn Extractor
) -> Context
[src]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.
Auto Trait Implementations
impl !RefUnwindSafe for TextMapCompositePropagator
impl Send for TextMapCompositePropagator
impl Sync for TextMapCompositePropagator
impl Unpin for TextMapCompositePropagator
impl !UnwindSafe for TextMapCompositePropagator
Blanket Implementations
impl<T> BorrowMut<T> for T where
T: ?Sized,
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impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]pub fn borrow_mut(&mut self) -> &mut T
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pub fn borrow_mut(&mut self) -> &mut T
[src]Mutably borrows from an owned value. Read more
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,