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Posted to log4j-dev@logging.apache.org by bu...@apache.org on 2002/11/07 14:57:00 UTC
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Patch to substitute variables in the log4j.configuration property
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=14350
Patch to substitute variables in the log4j.configuration property
Summary: Patch to substitute variables in the log4j.configuration
property
Product: Log4j
Version: 1.3alpha
Platform: Other
OS/Version: Other
Status: NEW
Severity: Normal
Priority: Other
Component: Other
AssignedTo: log4j-dev@jakarta.apache.org
ReportedBy: ceki@apache.org
Submitted by: Michael Locher <lo...@iam.unibe.ch>
Hi all
I had to find a way to provide a user dependent configuration file for my java
webstart application. the stright forward way to do so, is to handle property
substitution in the LogManager initalisation.
webstart users can provide something like this:
<property name="log4j.configuration" value="file://
${user.home}/log4j.properties" />
the substitiution code was already there, so the patch is quite small.
one new method in OptionConverter and 3 renamings in LogManager.
In what format do you expect the patch? I have included a diff against CVS HEAD
below.
Regards
Michael Locher
#####################################################################
diff -r1.37 OptionConverter.java
20a21
> // Michael Locher (locher@iam.unibe.ch)
98a100,120
> /**
> Very similar to <code>System.getProperty</code> except
> that the {@link SecurityException} is hidden and substitutions are perfor
med.
>
> @param key The key to search for.
> @param def The default value to return.
> @return the string value of the system property with applied substitution
s, or the default
> value if there is no property with that key.
> */
> public
> static
> String getSubstitutedSystemProperty(String key, String def) {
> try {
> Properties systemProperties = System.getProperties();
> return OptionConverter.substVars(OptionConverter.getSystemProperty(key
, def),
> System.getProperties());
> } catch(Throwable e) { // MS-Java throws com.ms.security.SecurityExcepti
onEx
> LogLog.debug("Was not allowed to read system properties.");
> return def;
> }
> }
#####################################################################
diff -r1.9 LogManager.java
78,79c78,79
< String override =OptionConverter.getSystemProperty(DEFAULT_INIT_OVERRIDE_K
EY,
< null);
---
> String override =OptionConverter.getSubstitutedSystemProperty(DEFAULT_INIT
_OVERRIDE_KEY,
> null);
85c85
< String configurationOptionStr = OptionConverter.getSystemProperty(
---
> String configurationOptionStr = OptionConverter.getSubstitutedSystemProp
erty(
89c89
< String configuratorClassName = OptionConverter.getSystemProperty(
---
> String configuratorClassName = OptionConverter.getSubstitutedSystemPrope
rty(
#####################################################################
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