Daniel Kirkdorffer created LOG4J2-2495:
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Summary: Enhance PatternLayout %X Format options
Key: LOG4J2-2495
URL: https://issues.apache.org/jira/browse/LOG4J2-2495
Project: Log4j 2
Issue Type: Improvement
Components: Layouts
Affects Versions: 2.11.1
Reporter: Daniel Kirkdorffer
One can print out the full MDC key value pair set in a PatternLayout, but can
only do so in a format that looks like this: \{key1=val1, key2=val2}
We've been using PatternLayout as a replacement for JSONLayout, due to certain
limitations with JSONLayout, but the format for %X key/value lists do not
conform to valid JSON syntax, and attempts to convert it using %replace run up
against regex limitations (or overly complex regex) for dealing with edge cases
(such as values that themselves contain curly brackets).
What would be nice is a means to customize the list output, i.e. to use :
instead of =, and to double quote the keys and values, to produce valid JSON.
I assume similar options for other formats, such as XML would be helpful too.
Since we already have %enc for proper encoding, having this key/value list in
various formats that %enc supports, would make sense.
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