Re: RE : File Location Substitution.

Problem is that it's a single-threaded process, for every user connecting to the system a new process is spawned.
This means I have multiple instances of the same process running simultaneously.
And I would like to have a log file per process.

I could send my loggings to Syslog but strangely enough the SysLogAppender seems to be a lot slower than the FileAppender
and besides I wouldn't have a log file per process.

Note that I'm still using 0.9.7, but if the features I was asking for are available in CVS HEAD I would consider upgrading.

Maarten

Alexandre Gacon wrote:

Instead of calling the file with the pid in the name, couldn't you use a
unique rolling file and output the thread id in the result, using a pattern
appender for example ?

Alexandre

-----Message d'origine-----
De : maarten [mailto:maartenb@xxxxxx] 
Envoyé : vendredi 5 août 2005 09:17
À : Log4CXX User
Objet : Re: File Location Substitution.


Are there any other properties that I can use as placeholders in my 
log4cxx.properties file.
Can I use environment variables, that will be expanded at runtime ? What
about the process id ?

What I do now is define a RollingFile appender in my properties file and 
do my own hard-coded initialization :

  Appender* appender = Logger::getRootLogger()->getAppender ("RollingFile");
  FileAppender* fa = dynamic_cast<FileAppender*>(appender);
  if (fa != 0) {
     string fullpath = "/var/log/example_" + getEnvVar("REMOTE_IP") + 
"_" + getDatetime() + "_" + getPID() + ".log";
     fa->setFile ( fullpath );
     fa->activateOptions();
  }

Thanks,
Maarten

Curt Arnold wrote:

  

On Aug 4, 2005, at 10:55 PM, macdev wrote:

    

I know I can set the location of the logfile used by Log4CXX using
the config files. I do this in the snippet I have included below.  
But how do I tailor the location at runtime? For example on a unix  
system how can make sure the logs go to a specific folder beneath  
the users home folder.

logdir=/Users/devguy/library/Application Support/logs

log4j.appender.PriParser=org.apache.log4j.FileAppender
log4j.appender.PriParser.File=${logdir}/parser_internal.log

Thanks.
p.s. I bought the manual hoping it would help me, but what I am
looking for eludes me.
      

log4cxx mimics the user.home, user.name, user.dir, java.io.tmpdir  
properties that work with log4j.  So you could do:

    

log4j.appender.PriParser.File=${user.home}/parser_internal.log