Thank you, Heri, for that answer. It works. However it does have one catch, the
method needs to know the logger name. What i was trying out was:
for (each logger mentioned in the log4j.xml) {
for (each appender of the logger) {
//get the appender information
}
}
The code that you mentioned does the second part of listing the information
of all appenders given a logger name. Can i somehow enhance it to implement the
requirement mentioned above?
Thanks again.
-Jaikiran
Bender Heri <[EMAIL PROTECTED]> wrote:
/**
* Finds the next appender with the given name within the hierarchie which is
* defined by the given Logger, incl. RootLogger
*
* @param aLog the logger whose appender should be found.
* @param aAppenderName the name of the desired appender
* @return an array with two entries: entry[0] is the Logger to which the found
* appender is attached, entry[1] is the found Appender
* @throws Exception if no appender could be found
*/
public static Object[] getNextAppenderInHierarchie( Logger aLog, String
aAppenderName )
throws Exception
{
Logger log = aLog;
String name = aLog.getName();
Appender a = null;
while ( ( a = log.getAppender( aAppenderName ) ) == null )
{
int i = name.lastIndexOf( '.' );
if ( i == -1 )
{
// the entire hierarchy was checked. Try also the root logger:
log = Logger.getRootLogger();
a = log.getAppender( aAppenderName );
if ( a == null )
{
throw new Exception( new StringBuffer( "appender " )
.append( aAppenderName )
.append( " not found for logger " )
.append( aLog.getName() ).toString() );
} // if a == null
break;
} // if name.length() == 0
name = name.substring( 0, i );
log = Logger.getLogger( name );
} // while ( ( a = aLog.getAppender( "DB_APPENDER" ) ) == null )
Object[] result = new Object[2];
result[0] = log;
result[1] = a;
return result;
}
With this method you can only find the appender CONSOLE because you didn't
attacht the appender FILE to any logger.
Heri
> -----Original Message-----
> From: jaikiran pai [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, July 04, 2006 12:03 PM
> To: log4j-user@logging.apache.org
> Subject: Get all appenders configured in log4j - Possible?
>
>
> Is there some way (API), through which i can get a collection
> of appenders that have been mentioned(configured) through
> log4j config files? Consider the following log4j.xml:
>
> ----------------------------------------------------------------
>
>
> > xmlns:log4j="http://jakarta.apache.org/log4j/"; debug="false">
>
> > class="org.jboss.logging.appender.RollingFileAppender">
> > class="org.jboss.logging.util.OnlyOnceErrorHandler"/>
>
> value="${jboss.server.home.dir}/log/server.log"/>
>
>
> [%X{TAPUSERNAME}] %-5p [%c] %m%n" name="ConversionPattern" />
>
>
> > class="org.apache.log4j.ConsoleAppender">
> > class="org.jboss.logging.util.OnlyOnceErrorHandler"/>
>
>
>
> > [Category] Message\n -->
>
> [%X{TAPUSERNAME}] %-5p [%c{1}] %m%n" name="ConversionPattern" />
>
>
>
>
>
>
>
>
>
>
> ----------------------------------------------------------------
>
> Can i get a collection containing the instances of appender
> named "FILE" and "CONSOLE" in the above case?
>
> regards,
> -Jaikiran
>
>
>
> ---------------------------------
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