NewRelic error trace and spans dashboard support

[smyrick]

Is your feature request related to a problem? Please describe.
NewRelic uses a non-standard format for tracking error dashboards on traces. It requires that you set a span attribute of otel.status_code which it uses to track error counts

https://docs.newrelic.com/docs/more-integrations/open-source-telemetry-integrations/opentelemetry/view-your-data/opentelemetry-errors-page/

Describe the solution you'd like
Add the ability to configure this property to be set or include it in all spans on either HTTP or GraphQL errors

Describe alternatives you've considered
We could customize an Otel collector between the Router and New Relic, however directly configuring Router to send info directly to NR does work minus this one feature: https://docs.newrelic.com/docs/more-integrations/open-source-telemetry-integrations/opentelemetry/get-started/opentelemetry-set-up-your-app/#review-settings

[bnjjj]

I think having that kind of configuration:

telemetry:
  instrumentation:
    spans:
      supergraph:
        attributes:
          "span.kind": "server"
          "otel.status_code":
            condition:
              - exists:
                  response_body: ".errors[0].message"
            value: "ERROR"

woud make sense

[abernix]

@bnjjj Is there a part of this that isn't available already? Is it the condition part?

[bnjjj]

Yes the condition part doesn't already exist