The coloring isn't done by the layout but by the StylePatternConverter and the
HighlightPatternConverter. Rather than creating a new converter you can simply
enhance the HighlightPatternConverter to accept the styling. So in addition to
being able to do
<pattern>%d %highlight{%p} %style{%C{1.} [%t] %m}{bold,green}%n</pattern>
you could also do
<pattern>%d %highlight{%p}{FATAL=magenta bold, ERROR=red, WARN=yellow bold,
INFO=green} %style{%C{1.} [%t] %m}{bold,green}%n</pattern>
Ralph
On Oct 31, 2012, at 7:40 PM, Gary Gregory wrote:
> Hi All:
>
> Nice job getting JAnsi support in Log4J2!
>
> I have a custom appender I use for 1.2 to color whole lines based on the
> level with some sensible defaults the use can override. For example:
>
> log4j.appender.ColorConsole=com.seagullsw.toolbox.log4j.AnsiConsoleAppender
> log4j.appender.ColorConsole.ImmediateFlush=true
> log4j.appender.ColorConsole.Target=System.out
> log4j.appender.ColorConsole.layout=org.apache.log4j.EnhancedPatternLayout
> log4j.appender.ColorConsole.layout.ConversionPattern=%d{ISO8601} [%t] %-5p:
> %m%n
>
> #log4j.appender.ColorConsole.FatalColor=\u001b[1;35m
> #log4j.appender.ColorConsole.ErrorColor=\u001b[1;31m
> #log4j.appender.ColorConsole.WarnColor=\u001b[0;33m
> #log4j.appender.ColorConsole.InfoColor=\u001b[0;32m
> #log4j.appender.ColorConsole.DebugColor=\u001b[0;36m
> #log4j.appender.ColorConsole.TraceColor=\u001b[1;30m
>
> log4j.appender.ColorConsole.FatalColor=//bold magenta
> log4j.appender.ColorConsole.ErrorColor=//bold red
> log4j.appender.ColorConsole.WarnColor=//bold yellow
> log4j.appender.ColorConsole.InfoColor=//green
> log4j.appender.ColorConsole.DebugColor=//cyan
> log4j.appender.ColorConsole.TraceColor=//bold black
>
> To do this a la log4j (1 and 2) though, it seems that the work should be done
> in the layout and not in the appender.
>
> But right now, I do not see a way to color the whole line (or part of a line
> for that matter) based on the level for a given event.
>
> I can do fancy formatting like:
>
> <PatternLayout pattern="%style{%d{ ISO8601 }}{black} %style{[%t]}{blue}
> %style{%-5level:}{yellow} %style{%msg%n%throwable}{green}" />
>
> But that's not what I want. So I am considering putting more smarts in
> PatternLayout.
>
> Does that seem sensitive?
>
> What should the configuration look like and how would you let it use defaults
> if some levels are not matched with colors?
>
> How about a new converter called level-style? For example:
>
> Use default colors:
>
> <PatternLayout pattern="%level-style{%d{ ISO8601 } [%t] %-5level:
> %msg%n%throwable}" />
>
> Use custom colors:
>
> <PatternLayout pattern="%level-style{%d{ ISO8601 } [%t] %-5level:
> %msg%n%throwable}{FATAL=magenta bold, ERROR=red, WARN=yellow bold,
> INFO=green}" />
>
> Your thoughts please.
>
> Gary
>
> --
> E-Mail: garydgreg...@gmail.com | ggreg...@apache.org
> JUnit in Action, 2nd Ed: http://bit.ly/ECvg0
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