This looks great, but ... :-) can I do something similar with a DOMConfigurator?
I looked, but I did not see a way to define a custom property with a log4j.dtd
XML file and the DOMConfigurator. I would really like to be able to do the exact
same thing within a log4j xml file. The DOMConfigurator calls an internal a
subst function that uses OptionConverter.substVars with a data member props. But
props looks like it will always be null (it is never set at least that I could
see) so only the System properties are used. This means, I can still use a
custom property, message.ConversionPattern, when defining a layout's conversion
pattern as in
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="${message.ConversionPattern}" />
</layout>
but I have to externally add the property "message.ConversionPattern" to the
System properties. Is there a better way to do this? (I am using 1.1b1 and am a
log4j newbie, so my apologies if this is a dumb question.)
Ideally, I think it would be nice to extend the dtd so that the
log4j:configuration element takes zero or more param elements. The
DOMConfigurator can add all the params to its internal props Properties data
member and then one could define any custom properties with
<log4j:configuration>
<param name="message.ConversionPattern"
value= "%t %-5p %c{2} - %m%n" />
... rest of config.xml can now use ${message.ConversionPattern}
without needing a second properties file. Does this make sense to fold into
DOMConfigurator?
Thanks for your help and for making log4j available.
Phil
Ceki Gülcü wrote:
> How about:
>
> configDir = /usr/local/my_project/prod/logs
>
> log4j.category.my_category=INFO, MY_Appender1, MY_Appender2, MY_Appender3,
> MY_Appender4, MY_Appender5, MY_Appender6, MY_Appender7
> ...
> log4j.appender.MY_Appender1.File=${configDir}/trace1.log
> ...
> log4j.appender.MY_Appender2.File=${configDir}/trace2.log
> ...
> log4j.appender.MY_Appender3.File=${configDir}/trace3.log
> ...
> log4j.appender.MY_Appender4.File=${configDir}/trace4.log
> ...
> log4j.appender.MY_Appender5.File=${configDir}/trace5.log
> ...
> log4j.appender.MY_Appender6.File=${configDir}/trace6.log
> ...
> log4j.appender.MY_Appender7.File=${configDir}/trace7.log
>
> Log4j supports variable substitution in config files. Hope this helps. Ceki
>
> At 15:34 14.03.2001 -0800, Greg Knight wrote:
> >Hello,
> >
> >I am playing with Log4J using both FileAppender and RollingFileAppender. In
> >defining the appenders (via a config file), I have a line similiar to:
> >
> >log4j.appender.MY_Appender1.File=trace.log
> >
> >My question is how do I make path to trace.log relative? The path will
> >change based on the environment in which the code executes. For example, the
> >fulll path in development might be c:\my_project\dev\logs\trace.log. In QA
> >the path might be /usr/local/my_project/qa/logs/trace.log. In production it
> >might be /usr/local/my_project/prod/logs/trace.log.
> >
> >While it is not that difficult to just change the config file, I would
> >rather not have to put the full path in the config file for each file
> >appender. The problem exacerbates when I have numerous file appenders
> >declared in the config file. Each one would need to be different depending
> >on which environment the code is hosted. Additionally, if I share the config
> >file with other developers on the project, they will have to modify each
> >file appender in the config file if their directory structure is different.
> >
> >What I would really like to do is following:
> >
> >/********************** config file ********************************/
> >configDir = /usr/local/my_project/prod/logs/
> >
> >log4j.category.my_category=INFO, MY_Appender1, MY_Appender2, MY_Appender3,
> >MY_Appender4, MY_Appender5, MY_Appender6, MY_Appender7
> >...
> >log4j.appender.MY_Appender1.File=trace1.log
> >...
> >log4j.appender.MY_Appender2.File=trace2.log
> >...
> >log4j.appender.MY_Appender3.File=trace3.log
> >...
> >log4j.appender.MY_Appender4.File=trace4.log
> >...
> >log4j.appender.MY_Appender5.File=trace5.log
> >...
> >log4j.appender.MY_Appender6.File=trace6.log
> >...
> >log4j.appender.MY_Appender7.File=trace7.log
> >
> >// other stuff
> >
> >/************** end of config file *****************************/
> >
> >/************ Java code *************************************/
> >
> >PropertyConfigurator.configure("config");
> >Enumeration appenders = cat.getAllAppenders();
> >while (appenders.hasMoreElements())
> >{
> > Appender = (Appender) appenders.nextElement();
> > if (Appender instanceOf FileAppender)
> > {
> > FileAppender fa = (FileAppender) Appender;
> > fa.setPath(props.getProperty("configDir"); //
> >how do I do this
> > }
> >}
> >
> >Thanx,
> >GK
> >
> >---------------------------------------------------------------------
> >To unsubscribe, e-mail: [EMAIL PROTECTED]
> >For additional commands, e-mail: [EMAIL PROTECTED]
>
> I hope to see you at my ApacheCon 2001 presentation
> entitled "Log4j, A Logging Package for Java".
>
> See http://ApacheCon.Com/2001/US/ for more details.
>
> ----
> Ceki Gülcü Web: http://qos.ch
> av. de Rumine 5 email: [EMAIL PROTECTED] (preferred)
> CH-1005 Lausanne [EMAIL PROTECTED]
> Switzerland Tel: ++41 21 351 23 15
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
begin:vcard
n:Miller;Philip
tel;fax:(609) 734-2662
tel;work:(609) 734-2779
x-mozilla-html:FALSE
org:Sarnoff Corporation;Advanced Video Processing
adr:;;201 Washington Road;Princeton;NJ;08543;USA
version:2.1
email;internet:[EMAIL PROTECTED]
title:MTS
end:vcard
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
