[logback-user] Logback pattern to truncate a message from end after 500 characters and append a characters only on truncation

[Sagar Shah]

Hello everyone,
I found out a way to truncate a message in logback after 500 characters using encoding patterns like shown below.
<encoder>
    <pattern>%d [%thread] %-5p %logger{56}:%line - %.-500m%n</pattern>
</encoder>

But I would also want to append some extra characters at the end, say '...', if the message was truncated. Is that possible in logback? 3 dots don't need to be added in every log message, but only in the truncated messages.

Please advise.

Regards,
Sagar Shah

Sagar Shah
Sr. Software Engineer

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