Try to understand the difference between event.name and logrecord.event.name and where the event.id is represented in otel

[HHobeck]

Hi there.

In the readme.md the following feature switch is documented:

• OTEL_DOTNET_EXPERIMENTAL_OTLP_EMIT_EVENT_LOG_ATTRIBUTES

  When set to true, it enables export of LogRecord.EventId.Id as
  logrecord.event.id and LogRecord.EventId.Name as logrecord.event.name.

  Added in 1.7.0-alpha.1.

When I create an event log in dotnet core 8.0 with OpenTelemetry.Exporter.OpenTelemetryProtocol (1.9.0) I get the following result:

Environment.SetEnvironmentVariable(
    "OTEL_DOTNET_EXPERIMENTAL_OTLP_EMIT_EVENT_LOG_ATTRIBUTES", "true"
);
logger.LogInformation(new EventId(4711, "JustATest"), "JustATest log");

{
  "resourceLogs": [
    {
      "resource": {
        "attributes": [
          ..
        ]
      },
      "scopeLogs": [
        {
          "scope": { "name": "MyApplication" },
          "logRecords": [
            {
              "timeUnixNano": "1724672694064471500",
              "observedTimeUnixNano": "1724672694064471500",
              "severityNumber": 9,
              "severityText": "Information",
              "body": { "stringValue": "JustATest log" },
              "attributes": [
                {
                  "key": "logrecord.event.id",
                  "value": { "intValue": "4711" }
                },
                {
                  "key": "logrecord.event.name",
                  "value": { "stringValue": "JustATest" }
                }
              ],
              "flags": 1,
              "traceId": "1fc1034d6359bef1373fa7d6e741e1d5",
              "spanId": "2834927eca22c371"
            }
          ]
        }
      ]
    }
  ]
}

My questions:

1. Is the resulting json output of logrecord.event.id and logrecord.event.name correct? I would expect just event.id and event.name because we are already in the logRecords scheme!
2. I cannot find the event definition in the otel convention. The only reference I have found is Event definition. But here only the event.name is documented not event.id.
3. The status is exprimental. How long does it take to get a final specification?

[cijothomas]

OTel's Log data model does not have a place to put ILogger's EventId and Name, so they are now exported as attributes. Since there is no standardized attribute name spec-ed out today, the current ones("logrecord.*") were chosen, and marked experimental. The final name could be something else, or it could be a top-level field in OTel LogRecord or something else.

No firm ETA on this, you can track progress here : #5462

[cijothomas]

#4404 Also see this.

[HHobeck]

Thank you providing this information. I hope this topic will go to the right path in the near future.