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From "Gary Gregory (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LOG4J2-962) Main Arguments Lookup not working
Date Tue, 04 Aug 2015 17:40:07 GMT

    [ https://issues.apache.org/jira/browse/LOG4J2-962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14654021#comment-14654021
] 

Gary Gregory commented on LOG4J2-962:
-------------------------------------

Hi Romuald,

"We have no idea of the internal model, and if this important issue exists and has not been
fixed since so much time, we think it is probably not that easy to fix."

How long an issue is left unaddressed may not be correlated to the difficulty of addressing
it. We are all volunteers here. This is why providing tests and patches for issues you care
about is the best way to move an issue forward.

> Main Arguments Lookup not working
> ---------------------------------
>
>                 Key: LOG4J2-962
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-962
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Lookups
>    Affects Versions: 2.1
>         Environment: Windows 7 x64, Java Batch Application
>            Reporter: Johannes Siebel
>
> It is not possible to use the Main Arguments Lookup in the current version. The "main"
prefix is not present in the corresponding Interpolator object and thus the resolution of
the variable is not working as advertised in the documentation, e.g. using the following variable
in the log4j2.xml:
> {code}${main:0}{code}
> As far as I can tell, the problem seems to stem from the PluginManger.collectPlugins-Method
that does not acknowledge the existence of the Main Arguments Lookup.
> I'm following the documentation on the website with the following sample log4j2.xml:
> {code:xml}
> <File name="GLOBAL" fileName="${env:DATA_DIR}/log/${env:APP_NAME}.log" >
>    <PatternLayout pattern="%m%n" header="File: ${main:0}" />
>     ...
> {code}
> ...and following code in my application:
> {code}
> public static void main(String[] args) {
>     MapLookup.setMainArguments(args);
>     ...
> {code}



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