Re: log4Perl dynamic filename

[periapt]

For many projects, I like to define a simple functional logging configuration.

sub InitLogger {
    my $logfile = shift;

    my $logconf = q|
        log4perl.logger.[package_name]                     = INFO, Log
+File
        log4perl.appender.LogFile             = Log::Log4perl::Appende
+r::File
        log4perl.appender.LogFile.filename                 = LOGFILE
        log4perl.appender.LOG.mode                         = append
        log4perl.appender.LogFile.layout                   = PatternLa
+yout
        log4perl.appender.LogFile.layout.ConversionPattern = %d %5p> %
+m%n
       |;

    $logconf =~ s/LOGFILE/$logfile/;

    Log::Log4perl->init( \$logconf );

    return Log::Log4perl::get_logger("[package_name");
}    # end InitLogger();

I set the log4perl.appender.LogFile.filename option to an arbitrary value 'LOGNAME' so that I can replace it in the string later. Not sure why but I've found this to be more stable than using variable substitution inside the config string itself.

If my projects grows to encompass several program files with almost identical log specs (except maybe for filename), I can pull the function into a library and share