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I am using log4j-1.2-api-2.17.1.jar to fix lo4j vulnerability but "helpers. Loglog" class not found in log4j-1.2-api-2.17.1.jar ?

ToyinAwofala
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  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. – Community Feb 08 '22 at 11:01

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Log4j's migration guidance is spotty, but it does appear true that the 'LogLog' class was removed in the transition from v1 to v2. The only reference I can find to what replaces it in v2 is from the Narkive mailing list archive, where a user identified as 'Remko Popma' suggests that the replacement is 'StatusLogger'.

Unforunately, 'StatusLogger' may not be a drop-in replacement for 'LogLog'. 'LogLog' had methods debug(String msg), error(String msg) and warn(String msg) that take simple String arguments and log them. 'StatusLogger' has methods with the same name and signature, which suggests that these might be drop-in replacements. That is,

LogLog.debug("Something happened here")

might become

StatusLogger.debug("Something happened here")

with no further changes needed. Or, it might require some config changes. Or, it might not work at all.

Without further guidance from the Log4j group, figuring out how to move from 'LogLog' to 'StatusLogger' will take a little experimentation. I'll post an edit once I've been able to try it out.

Borea Deitz
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