Json logging: exception in message

[agreedSkiing]

Is there a way to get the exception stack into the top level message field? Like a normal non json log stacktrace print?

[cescoffier]

@xstefank do you know? You have been looking into JSON logging not so long ago.

[xstefank]

Hi @agreedSkiing, this will be possible in Quarkus 3.36.0 with the JsonProvider SPI - https://github.com/xstefank/quarkus-reproducers/blob/main/json-log-error-message/src/main/java/io/xstefank/ErrorJsonProvider.java.

But we cannot override the already supplied JSON keys because Generator directly writes to the stream. So, you need to exclude the existing "message" and provided a different name of your new key. Hopefully, this works for you.

[agreedSkiing]

Seems like it would be time to write a inhouse depency, that combindes the original message with a normal java stacktrace

[xstefank]

Sorry, I don't understand then what you are after? You would like to override the "message" key? Any kind of this mutation will be slowing down logging which in case of big logging load would dramatically slow down the Quarkus app.

[agreedSkiing]

No. I would add a new dynamic tag that combines the result of message with if exists a exception stacktrace