Function TraceContext

pkg/middleware/tracing.go:15–21

TraceContext unpacks the request context looking for an existing trace id.

(next http.Handler)

// TraceContext unpacks the request context looking for an existing trace id.
func TraceContext(next http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		ctx := propagator.Extract(r.Context(), propagation.HeaderCarrier(r.Header))
		propagator.Inject(ctx, propagation.HeaderCarrier(r.Header))
		next.ServeHTTP(w, r.WithContext(ctx))
	})
}