log4cplus-devel

[Log4cplus-devel] use configuration file for rolling appender, but set filename inside application

[Ulrich H. <uhe...@ib...>]

Hi,
i want to use a configuration file like this:

# switch on general logging (reports ALL levels to ROLLFILE and OUTPUT)
log4cplus.rootLogger=ALL, ROLLFILE, OUTPUT

# switch on release-logging (reports only warnings and errors levels to
ROLLFILE)
#log4cplus.rootLogger=WARN, ROLLFILE

# switch off general logging
#log4cplus.rootLogger=OFF

# explicitely enable loggers (even if general logging is off)
#log4cplus.logger.IBHStatik=ALL, ROLLFILE
#log4cplus.logger.IBHCore=ALL, ROLLFILE

# setup the ROLLFILE
log4cplus.appender.ROLLFILE=log4cplus::RollingFileAppender
log4cplus.appender.ROLLFILE.MaxFileSize=1000KB
log4cplus.appender.ROLLFILE.MaxBackupIndex=50
log4cplus.appender.ROLLFILE.layout=log4cplus::PatternLayout
log4cplus.appender.ROLLFILE.layout.ConversionPattern=%d %-5p (%F:%L) - %m%n

but the filename for the RollingFileAppender i will set in my application.

How can i do this?

Thanks
Ulrich

Re: [Log4cplus-devel] use configuration file for rolling appender, but set filename inside application

[Andreas B. <bie...@co...>]

Dear Ulrich Heinicke,

we used environment variables for that in our project.

On 18.06.2012 07:06, Ulrich Heinicke wrote:
> Hi,
> i want to use a configuration file like this:

<snip>

> # setup the ROLLFILE
> log4cplus.appender.ROLLFILE=log4cplus::RollingFileAppender
> log4cplus.appender.ROLLFILE.MaxFileSize=1000KB

log4cplus.appender.ROLLFILE.File=${LOGFILE_PATTERN}

<snip>

And in sthe code something like:

---8<---
// put some variables in the environment that can be used in the
// configuration file
setenv("LOGFILE_PATTERN", "/my/cool/log/file", 0);
--->8---

But I'm curious if there is another way to do that.

best regards

Andreas Bießmann