[LOG4J2-2410] Add exceptionName for conversion pattern exception

• Type: New Feature
• Status: Open
• Priority: Critical
• Resolution: Unresolved
• Component/s: Pattern Converters
• Assignee: Unassigned
• Reporter: Christian
• Created: 15/Aug/18 14:45
• Updated: 15/Aug/18 15:33

Description

We are currently implementing an own JSON layout using the pattern layout including the %enc  conversion pattern. Unfortunately, it is not possible to get the exceptionName using the pattern layouts like in the JSON appender.

Example exception:

de.test.test.UnknownIdentifierException: CronJob with code test not found
at de.test.test.service.Services.validateSingleResultWithType(Services.java:88)

In the JSON Layout with includeStacktrace=true, there will be a new field thrown_name which includes only the exception name: 

de.test.test.UnknownIdentifierException

 
This would be helpful in the pattern layout, too. With this field a customer can filter for specific exceptions like for example Nullpointers.
A possible implementation could be added to the exception pattern

%ex{short.exceptionName}