The console has custom fields, the log file does not

[KricYi]

@OverRide
public void writeTo(JsonGenerator generator, ExtLogRecord event) throws IOException {
generator.writeStringField("traceId", Span.current().getSpanContext().getTraceId()); // Will be added to every log, as a field on the json.
}

[SlyngDK]

I can't read from issue description, what the issue is handling about.

[KricYi]

The console can print my custom traceId, but there is no traceId field in the log file。

I want to extract mdc.traceId to the root traceId

[GeorgeFitzpatrick]

Would setting quarkus.log.json.fields.mdc.flat-fields=true in your application.properties solve your issue or do you only want one specific field from the MDC in the root of your logs?