fix: re-export WithContext in the same place (open-telemetry#2879)

Co-authored-by: Cijo Thomas <[email protected]>

Author: scottgerring

opentelemetry/CHANGELOG.md

@@ -25,6 +25,13 @@ predictable and efficient observability pipelines.
 
 - re-export `tracing` for `internal-logs` feature to remove the need of adding `tracing` as a dependency
 
+## 0.29.1
+
+Release 2025-Apr-01
+
+- Bug Fix: Re-export `WithContext` at `opentelemetry::trace::context::WithContext` [#2879](https://github.com/open-telemetry/opentelemetry-rust/pull/2879) to restore backwards compatability
+  - The new path for `WithContext` and `FutureExt` are in  `opentelemetry::context` as they are independent of the trace signal. Users should prefer this path.
+
 ## 0.29.0
 
 Released 2025-Mar-21

opentelemetry/src/context.rs

@@ -24,7 +24,7 @@ use std::sync::Arc;
 mod future_ext;
 
 #[cfg(feature = "futures")]
-pub use future_ext::FutureExt;
+pub use future_ext::{FutureExt, WithContext};
 
 thread_local! {
     static CURRENT_CONTEXT: RefCell<ContextStack> = RefCell::new(ContextStack::default());

opentelemetry/src/trace/context.rs

@@ -7,7 +7,7 @@ use crate::{
 use std::{borrow::Cow, error::Error, sync::Mutex};
 
 // Re-export for compatability. This used to be contained here.
-pub use crate::context::FutureExt;
+pub use crate::context::{FutureExt, WithContext};
 
 const NOOP_SPAN: SynchronizedSpan = SynchronizedSpan {
     span_context: SpanContext::NONE,

opentelemetry/src/trace/mod.rs

@@ -176,7 +176,9 @@ mod tracer;
 mod tracer_provider;
 
 pub use self::{
-    context::{get_active_span, mark_span_as_active, FutureExt, SpanRef, TraceContextExt},
+    context::{
+        get_active_span, mark_span_as_active, FutureExt, SpanRef, TraceContextExt, WithContext,
+    },
     span::{Span, SpanKind, Status},
     span_context::{SpanContext, TraceState},
     tracer::{SamplingDecision, SamplingResult, SpanBuilder, Tracer},