Add ContextWithTracer() (thanos-io#33)

* Add ContextWithTracer() Signed-off-by: Marco Pracucci <marco@pracucci.com> * Added CHANGELOG entry Signed-off-by: Marco Pracucci <marco@pracucci.com> Signed-off-by: Marco Pracucci <marco@pracucci.com>
phillebaba · Nov 9, 2022 · 949414b · 949414b
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -11,6 +11,7 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 ## Unreleased
 
 ### Fixed
+- [#33](https://github.com/thanos-io/objstore/pull/33) Tracing: Add `ContextWithTracer()` to inject the tracer into the context.
 
 ### Added
 - [#15](https://github.com/thanos-io/objstore/pull/15) Add Oracle Cloud Infrastructure Object Storage Bucket support.

diff --git a/tracing/tracing.go b/tracing/tracing.go
@@ -29,6 +29,11 @@ type Tracer interface {
 	GetTraceIDFromSpanContext(ctx opentracing.SpanContext) (string, bool)
 }
 
+// ContextWithTracer returns a new `context.Context` that holds a reference to given opentracing.Tracer.
+func ContextWithTracer(ctx context.Context, tracer opentracing.Tracer) context.Context {
+	return context.WithValue(ctx, tracerKey, tracer)
+}
+
 // tracerFromContext extracts opentracing.Tracer from the given context.
 func tracerFromContext(ctx context.Context) opentracing.Tracer {
 	val := ctx.Value(tracerKey)