Span with custom traceId

[xsmrcek]

Hello,
Is there any wsy to start custom span with custom traceId and spanId value? I have to do a little custom instrumentation for part of my code which is instrumented by opentelemetry agent or application insights agents (I am testing them both). I did find a way how to start custom span, but I wasn;t able to find out how to set custom trace info. it is possible somehow please?

[trask]

hey @xsmrcek! it takes a few steps:

• create a SpanContext from custom traceId and spanId values
• then create a Span using Span.wrap(SpanContext)
• then create a Context using Context.root().with(span)
• then call setParent(Context) on your SpanBuilder

another option if you have a traceparent is to use W3CTraceContextPropagator.getInstance()extract(Context.root(), ...) to create the Context that you feed to SpanBuilder.setParent()

[xsmrcek]

hello @trask
Thank you! With this guide I was able to implement it :)