[KARAF-5116] Defining karaf.log.console as a log4j2 log level causes exceptions

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 4.1.1
• Fix Version/s: 4.1.2, 4.2.0.M1
• Assignee: Grzegorz Grzybek
• Reporter: Jamie Kemp
• Created: 05/May/17 08:33
• Updated: 04/Jul/17 11:15
• Resolved: 04/Jul/17 06:00

Description

Running karaf 4.1.1, defining karaf.log.console as DEBUG to switch on the console appender (to get to logging when running under pax-exam) results in the following exceptions:

java.lang.IllegalArgumentException: Bad level "DEBUG"
        at java.util.logging.Level.parse(Level.java:482)
        at org.apache.karaf.main.util.BootstrapLogManager.getDefaultHandlersInternal(BootstrapLogManager.java:109)
        at org.apache.karaf.main.util.BootstrapLogManager.getDefaultHandlers(BootstrapLogManager.java:70)
        at org.apache.karaf.main.util.BootstrapLogManager.configureLogger(BootstrapLogManager.java:75)
        at org.apache.karaf.main.Main.launch(Main.java:244)
        at org.apache.karaf.main.Main.main(Main.java:178)
java.lang.IllegalArgumentException: Bad level "DEBUG"
        at java.util.logging.Level.parse(Level.java:482)
        at org.apache.karaf.main.util.BootstrapLogManager.getDefaultHandlersInternal(BootstrapLogManager.java:109)
        at org.apache.karaf.main.util.BootstrapLogManager.getDefaultHandlers(BootstrapLogManager.java:70)
        at org.apache.karaf.main.util.BootstrapLogManager.configureLogger(BootstrapLogManager.java:75)
        at org.apache.karaf.main.KarafActivatorManager.<init>(KarafActivatorManager.java:49)
        at org.apache.karaf.main.Main.launch(Main.java:280)
        at org.apache.karaf.main.Main.main(Main.java:178)
java.lang.IllegalArgumentException: Bad level "DEBUG"
        at java.util.logging.Level.parse(Level.java:482)
        at org.apache.karaf.main.util.BootstrapLogManager.getDefaultHandlersInternal(BootstrapLogManager.java:109)
        at org.apache.karaf.main.util.BootstrapLogManager.getDefaultHandlers(BootstrapLogManager.java:70)
        at org.apache.karaf.main.util.BootstrapLogManager.configureLogger(BootstrapLogManager.java:75)
        at org.apache.karaf.main.lock.SimpleFileLock.<init>(SimpleFileLock.java:40)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
        at org.apache.karaf.main.Main.createLock(Main.java:476)
        at org.apache.karaf.main.Main.doMonitor(Main.java:378)
        at org.apache.karaf.main.Main.access$100(Main.java:75)
        at org.apache.karaf.main.Main$3.run(Main.java:369)

Looks like BootstrapLogManager attempts to use java.util.logging levels which DEBUG is not one of them. This however does result in valid logging out via log4j2 to the console appender.

Using a valid java.util.logger level (tried FINE during testing) results in logging to the console from 'SimpleFileLock' but nothing from log4j2.