opencensus-go
opencensus-go copied to clipboard
Tracestate header not generated or mutated
What version of OpenCensus are you using?
v0.22.3
What version of Go are you using?
1.16
What did you do?
Configured opencensus-go with W3C tracecontext propagation and created a new span with StartSpanWithRemoteParent().
What did you expect to see?
A traceparent header should be generated (or mutated if one already existed) A tracestate header should be generated (or mutated if one already existed)
What did you see instead?
A traceparent header is generated, containing the trace ID and a new span ID, but the tracestate header is just passed through 1:1 or not generated at all if it wasn't part of the incoming request.
Additional context
While this doesn't go against the W3C spec, a tracestate should be generated/mutated. Also, I don't see the functionality in the library to manually do this since the whole generation/mutation process is somewhat hidden to the caller (but maybe I'm missing something here). If that's possible already, a pointer to how this is supposed to be used would be greatly appreciated.