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What if I need dynamic values in a static Log4perl configuration file?

April 26, 2017configuration Dynamic file log4perl static values

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What if I need dynamic values in a static Log4perl configuration file?

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Say, your application uses Log::Log4perl for logging and therefore comes with a Log4perl configuration file, specifying the logging behaviour. But, you also want it to take command line parameters to set values like the name of the log file. How can you have both a static Log4perl configuration file and a dynamic command line interface? As of Log::Log4perl 0.28, every value in the configuration file can be specified as a Perl hook.