chradek

## minimal_instrumentation.md

      
        
          
            
              
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                lmolkova
                / minimal_instrumentation.md
            
            
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              August 15, 2023 20:41
            
              
                EventHub and ServiceBus instrumentation
              
          
        
      
        
  
      
    Short version

Context propagation protocol

application SDK MUST propagate trace parent part of the context (version, traceId, parentId and traceFlags) in the message in Diagnostic-Id application property following W3C trace-context format for traceparent encoding.
Also, propagate W3C trace context using W3C Trace Context Propagator from OpenTelemetry. It should populate traceparent and tracestate application properties.
traceparent must match Diagnostic-Id value.
When extracting the context, first get W3C trace-context and then (if missing) read Diagnostic-Id.