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feat(node): Do not add HTTP & fetch span instrumentation if tracing is disabled #15730
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                    chargome
  
              
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…ntation (#15732) Part of #15730 Noticed that this is not really happening otherwise, so if we are not adding the `HttpInstrumentation` we now make sure to extract incoming traces ourselves! This will unlock us not adding that instrumentation when tracing is disabled. Also includes #15731 as a side effect.
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LGTM!
      
        
      
      
  
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Part of #15725, this PR stops adding the
HttpInstrumentation/UndiciInstrumentationif tracing is not enabled.I think this should not really be breaking, as the integrations should not do anything else, if tracing is disabled 🤔
This only skips the http instrumentation without spans on node 22+, as only there our own diagnostics-channel based instrumentation can cover everything we need.