[logback-user] Bridging Log4J over SLF4J and the lack of Log4J Logger.setLevel()

ceki ceki at qos.ch
Mon Jan 7 19:24:33 CET 2013

Hi Mark,

Assuming the Logger class you are referring is in package
org.apache.log4j and by "bridging log4j-over-slf4j" you are referring
to the log4j-over-slf4j module shipping with slf4j, then the setLevel()
method in Logger is missing. Please file a bug report at
http://bugzilla.slf4j.org/ so that this omission can be fixed (with a
nop implementation of said method).

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On 07.01.2013 15:16, Mark Petrovic wrote:
> [Originally posted on 12/26/2012, but it apparently did not make it to
> the list archives. msp]
> Hi.  Thank you for SLF4J and Logback.
> I have this line of code that just today came in from an upstream
> dependency out of my control:
>      private static final Logger logger = Logger.getLogger(FooImpl.class);
>      static {
>          logger.setLevel(Level.DEBUG);    <<<<<<<<<<<<<<<<
>      }
> Unfortunately, this is logging code I had been successfully bridging,
> but this setLevel() call on a Log4J logger breaks it.
> Do I have any elegant recourse beyond asking the developers of the line
> of code to not do this?
> Thanks.
> --
> Mark

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