Log4j2 - PatternLayout dependend on LogLevel - log4j2

Question

Is it possible to define two different PatternLayouts and dependend on the application LogLevel it uses the first or the second one?
Example:
If i run my application with ERROR Level, which is the default, it should print the log statements like:
$java -jar myApp.jar param1=value1
Error Message 1
Error Message 2
But if i run my application with INFO or DEBUG, it should print the log Statements like:
$java -jar myApp.jar --debug param1=value1
DEBUG | 18.03.2016 11:04:43,412 1058 | Debug Message 1
DEBUG | 18.03.2016 11:04:43,412 1058 | Debug Message 2
INFO | 18.03.2016 11:04:43,414 1060 | Info Message 1
ERROR | 18.03.2016 11:04:43,420 1066 | Error Message 1
ERROR | 18.03.2016 11:04:43,420 1066 | Error Message 2
Internally if the parameter --debug or --info is given, my app is switching the global LogLevel. The default is ERROR.
How should i configure my log4j2.xml to accomplish this?? I could not find any solution. For reference my commandLine parser and the util class where i switch the LogLevel at runtime.

Answer 1

After the hint of #RemkoPopma i did some more research and found a solution. My log4j2.xml looks now like:
<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout>
<ScriptPatternSelector defaultPattern="%highlight{%-5p | %d{dd.MM.yyyy HH:mm:ss,SSS} %r | %m%n}">
<Script name="selector" language="javascript"><![CDATA[
substitutor.replace("${main:pacifyLogLevel}");
]]>
</Script>
<!-- INFO and DEBUG are using the defaultPattern -->
<PatternMatch key="ERROR" pattern="%-5p %m%n" />
</ScriptPatternSelector>
</PatternLayout>
</Console>
</Appenders>
<Loggers>
<Logger name="com.geewhiz.pacify" level="error" />
<Root level="error">
<AppenderRef ref="Console" />
</Root>
</Loggers>
</Configuration>
I also had to add the following line to my Logging Util class, where i switch the LogLevel at runtime:
MainMapLookup.setMainArguments(new String[] { "pacifyLogLevel", level.toString() });
The result of
substitutor.replace("${main:pacifyLogLevel}");
is used and looked up in the PatternMatch. If not found he uses the defaultPattern. So in my application only the ERROR Level has a different LogPattern. The other ones are using the default log pattern.
Is there a better solution?

Answer 2

Take a look at Pattern Selectors at the end of the PatternLayout documentation.
https://logging.apache.org/log4j/2.0/manual/layouts.html#PatternLayout