how to build an opentelemetry context from tracing current span?

[egtwp]

Hello,
I would like to propagate my tracing::Span::current() in my currier to let my server use it as parent in opentelemetry context propagation.

How can I do? I'm missing something?

That's a very simplified view of what my brain was thinking about:

#[tracing::instrument]
fn my_fn() {
  use tracing_opentelemetry::OpenTelemetrySpanExt;

  let current_span = tracing:Span::current();
  let current_context = current_span.context(); //But is empty!
  
  //Inject opentelemetry context into currier...
}

[ymgyt]

Hmm, the code mentioned above seems like it would work well.
For reference, we are actually able to integrate baggage using the following method.

0. init propagator
1. inject request_id in baggage
2. inject with text map propagator
3. extract context from request

[egtwp]

You right!
My example code seems to work!

I was misled by the debug of opentelemetry::context that seems to print an empty object even if is not...

I will check the relative code just to understand more how to debug it.

Thank u!