RE: log4j custom filters how to?
Heri,
Thanks a lot.
I need a feature somewhat similar to Chainsaw. I need to be able to
filter the logs based on the contents of the logs. For instance if my
logs have some information like
(
{name = 'xx',age='',..},
{name='yy',age='',}
etc.),
I should be able to filter out the logs based on name first, then filter
on age if a match for the name is found.
For Eg, the user running the application should be able to select a
parameter he wants to filter on at runtime.
Suppose the user selects 'name = xx age = xx ' as the filtering
parameter for the logs,
Then my custom filter should first filter based on name and then on age
if a match for name exists.
Is this kind of functionality possible by writing log4j custom filters?
Could you provide me with some tips for the same.
Thanks,
sushama
-Original Message-
From: Bender Heri [mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 04, 2006 2:23 AM
To: Log4J Users List
Subject: RE: log4j custom filters how to?
If you use xml configuration file you can attach one ore more self
written filter class(es):
example:
appender name=CONSOLE.OUT
class=org.apache.log4j.ConsoleAppender
param name=target value=System.out/
layout class=org.apache.log4j.PatternLayout
param name=ConversionPattern value=%d{HH:mm:ss.SSS}
(%6r) %-5p %-10X{category} [%-7t] %F:%L %x - %m%n/
/layout
filter class=org.apache.log4j.varia.LevelRangeFilter
param name=LevelMin value=debug/
param name=LevelMax value=info/
param name=AcceptOnMatch value=false/
/filter
filter
class=ch.ergonomics.pms.common.supervision.TraceDenyFilter/
filter
class=ch.ergonomics.pms.common.supervision.XMLDenyFilter/
/appender
Your own filter class extends org.apache.log4j.spi.Filter and could look
like this example:
public class TraceAllowFilter extends Filter
{
/** Standard constructor */
public TraceAllowFilter()
{
super();
}
/**
* @see
org.apache.log4j.spi.Filter#decide(org.apache.log4j.spi.LoggingEvent)
*/
public int decide( LoggingEvent aEvent )
{
if ( aEvent.getMDC( PMSLogger.MDC_CATEGORY ) == null )
{
return Filter.DENY;
}
if ( aEvent.getMDC( PMSLogger.MDC_CATEGORY ).equals(
PMSLogger.TRACE ) )
{
String s = ( String ) MDC.get( PMSConfig.PROP_NAME_TRACEON
);
if (( s != null )
( s.equals( FALSE ) ) )
{
return Filter.DENY;
}
return Filter.NEUTRAL;
}
return Filter.DENY;
}
}
it's just a sample. You have to code your own decision algorithm.
Be aware that the filters can be chained. Return values of ALLOW or DENY
do NOT call the next filter, only NEUTRAL will call also the next filter
of the chain.
Heri
-Original Message-
From: Shroff, Sushama [mailto:[EMAIL PROTECTED]
Sent: Monday, July 03, 2006 11:19 PM
To: log4j-user@logging.apache.org
Subject: [SPAM (Bayesain Analysis)] - log4j custom filters how to? -
Bayesian Filter detected spam
Hi,
I am a new user to log4j. I need to write certain custom filters for
log4j and am wondering how it is to be done.
Any help regarding the same will be appreciated.
Thanks,
Sushama Shroff
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
RE: log4j custom filters how to?
Try ExpressionFilter:
http://svn.apache.org/viewvc/logging/log4j/trunk/src/java/org/apache/log
4j/filter/ExpressionFilter.java?view=markup
Scott Deboy
Principal Engineer
COMOTIV SYSTEMS
111 SW Columbia Street Ste. 950
Portland, OR 97201
Telephone: 503.224.7496
Cell: 503.997.1367
Fax: 503.222.0185
[EMAIL PROTECTED]
www.comotivsystems.com
-Original Message-
From: Shroff, Sushama [mailto:[EMAIL PROTECTED]
Sent: Wednesday, July 05, 2006 10:53 AM
To: [EMAIL PROTECTED]
Cc: log4j-user@logging.apache.org
Subject: RE: log4j custom filters how to?
Heri,
Thanks a lot.
I need a feature somewhat similar to Chainsaw. I need to be able to
filter the logs based on the contents of the logs. For instance if my
logs have some information like
(
{name = 'xx',age='',..},
{name='yy',age='',}
etc.),
I should be able to filter out the logs based on name first, then filter
on age if a match for the name is found.
For Eg, the user running the application should be able to select a
parameter he wants to filter on at runtime.
Suppose the user selects 'name = xx age = xx ' as the filtering
parameter for the logs,
Then my custom filter should first filter based on name and then on age
if a match for name exists.
Is this kind of functionality possible by writing log4j custom filters?
Could you provide me with some tips for the same.
Thanks,
sushama
-Original Message-
From: Bender Heri [mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 04, 2006 2:23 AM
To: Log4J Users List
Subject: RE: log4j custom filters how to?
If you use xml configuration file you can attach one ore more self
written filter class(es):
example:
appender name=CONSOLE.OUT
class=org.apache.log4j.ConsoleAppender
param name=target value=System.out/
layout class=org.apache.log4j.PatternLayout
param name=ConversionPattern value=%d{HH:mm:ss.SSS}
(%6r) %-5p %-10X{category} [%-7t] %F:%L %x - %m%n/
/layout
filter class=org.apache.log4j.varia.LevelRangeFilter
param name=LevelMin value=debug/
param name=LevelMax value=info/
param name=AcceptOnMatch value=false/
/filter
filter
class=ch.ergonomics.pms.common.supervision.TraceDenyFilter/
filter
class=ch.ergonomics.pms.common.supervision.XMLDenyFilter/
/appender
Your own filter class extends org.apache.log4j.spi.Filter and could look
like this example:
public class TraceAllowFilter extends Filter
{
/** Standard constructor */
public TraceAllowFilter()
{
super();
}
/**
* @see
org.apache.log4j.spi.Filter#decide(org.apache.log4j.spi.LoggingEvent)
*/
public int decide( LoggingEvent aEvent )
{
if ( aEvent.getMDC( PMSLogger.MDC_CATEGORY ) == null )
{
return Filter.DENY;
}
if ( aEvent.getMDC( PMSLogger.MDC_CATEGORY ).equals(
PMSLogger.TRACE ) )
{
String s = ( String ) MDC.get( PMSConfig.PROP_NAME_TRACEON
);
if (( s != null )
( s.equals( FALSE ) ) )
{
return Filter.DENY;
}
return Filter.NEUTRAL;
}
return Filter.DENY;
}
}
it's just a sample. You have to code your own decision algorithm.
Be aware that the filters can be chained. Return values of ALLOW or DENY
do NOT call the next filter, only NEUTRAL will call also the next filter
of the chain.
Heri
-Original Message-
From: Shroff, Sushama [mailto:[EMAIL PROTECTED]
Sent: Monday, July 03, 2006 11:19 PM
To: log4j-user@logging.apache.org
Subject: [SPAM (Bayesain Analysis)] - log4j custom filters how to? -
Bayesian Filter detected spam
Hi,
I am a new user to log4j. I need to write certain custom filters for
log4j and am wondering how it is to be done.
Any help regarding the same will be appreciated.
Thanks,
Sushama Shroff
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
RE: log4j custom filters how to?
Hi,
Thanks.
When is the decide method of the filter called?
Does specifying the filter information in the xml configuration file
automatically call the decide method for that filter?
If I need an application to use the same custom filters for processing
log input at run-time (say through a telnet appender similar to what
ChainSaw does)
And also process pre-stored log files using the same filters while
reading one line at a time, how could this be achieved?
Thanks
-Original Message-
From: Scott Deboy [mailto:[EMAIL PROTECTED]
Sent: Wednesday, July 05, 2006 12:16 PM
To: Log4J Users List
Subject: RE: log4j custom filters how to?
Try ExpressionFilter:
http://svn.apache.org/viewvc/logging/log4j/trunk/src/java/org/apache/log
4j/filter/ExpressionFilter.java?view=markup
Scott Deboy
Principal Engineer
COMOTIV SYSTEMS
111 SW Columbia Street Ste. 950
Portland, OR 97201
Telephone: 503.224.7496
Cell: 503.997.1367
Fax: 503.222.0185
[EMAIL PROTECTED]
www.comotivsystems.com
-Original Message-
From: Shroff, Sushama [mailto:[EMAIL PROTECTED]
Sent: Wednesday, July 05, 2006 10:53 AM
To: [EMAIL PROTECTED]
Cc: log4j-user@logging.apache.org
Subject: RE: log4j custom filters how to?
Heri,
Thanks a lot.
I need a feature somewhat similar to Chainsaw. I need to be able to
filter the logs based on the contents of the logs. For instance if my
logs have some information like
(
{name = 'xx',age='',..},
{name='yy',age='',}
etc.),
I should be able to filter out the logs based on name first, then filter
on age if a match for the name is found.
For Eg, the user running the application should be able to select a
parameter he wants to filter on at runtime.
Suppose the user selects 'name = xx age = xx ' as the filtering
parameter for the logs,
Then my custom filter should first filter based on name and then on age
if a match for name exists.
Is this kind of functionality possible by writing log4j custom filters?
Could you provide me with some tips for the same.
Thanks,
sushama
-Original Message-
From: Bender Heri [mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 04, 2006 2:23 AM
To: Log4J Users List
Subject: RE: log4j custom filters how to?
If you use xml configuration file you can attach one ore more self
written filter class(es):
example:
appender name=CONSOLE.OUT
class=org.apache.log4j.ConsoleAppender
param name=target value=System.out/
layout class=org.apache.log4j.PatternLayout
param name=ConversionPattern value=%d{HH:mm:ss.SSS}
(%6r) %-5p %-10X{category} [%-7t] %F:%L %x - %m%n/
/layout
filter class=org.apache.log4j.varia.LevelRangeFilter
param name=LevelMin value=debug/
param name=LevelMax value=info/
param name=AcceptOnMatch value=false/
/filter
filter
class=ch.ergonomics.pms.common.supervision.TraceDenyFilter/
filter
class=ch.ergonomics.pms.common.supervision.XMLDenyFilter/
/appender
Your own filter class extends org.apache.log4j.spi.Filter and could look
like this example:
public class TraceAllowFilter extends Filter
{
/** Standard constructor */
public TraceAllowFilter()
{
super();
}
/**
* @see
org.apache.log4j.spi.Filter#decide(org.apache.log4j.spi.LoggingEvent)
*/
public int decide( LoggingEvent aEvent )
{
if ( aEvent.getMDC( PMSLogger.MDC_CATEGORY ) == null )
{
return Filter.DENY;
}
if ( aEvent.getMDC( PMSLogger.MDC_CATEGORY ).equals(
PMSLogger.TRACE ) )
{
String s = ( String ) MDC.get( PMSConfig.PROP_NAME_TRACEON
);
if (( s != null )
( s.equals( FALSE ) ) )
{
return Filter.DENY;
}
return Filter.NEUTRAL;
}
return Filter.DENY;
}
}
it's just a sample. You have to code your own decision algorithm.
Be aware that the filters can be chained. Return values of ALLOW or DENY
do NOT call the next filter, only NEUTRAL will call also the next filter
of the chain.
Heri
-Original Message-
From: Shroff, Sushama [mailto:[EMAIL PROTECTED]
Sent: Monday, July 03, 2006 11:19 PM
To: log4j-user@logging.apache.org
Subject: [SPAM (Bayesain Analysis)] - log4j custom filters how to? -
Bayesian Filter detected spam
Hi,
I am a new user to log4j. I need to write certain custom filters for
log4j and am wondering how it is to be done.
Any help regarding the same will be appreciated.
Thanks,
Sushama Shroff
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED
RE: log4j custom filters how to?
It is very easy. You just have to extend the AppenderSkeleton abstract class. And write your implementation login in the append method. Regards, Rohit B. Rai, Cordys RD (India) Pvt. Ltd. -- If you haven't found something you are willing to die for, you are not fit to live! -Original Message- From: Shroff, Sushama [mailto:[EMAIL PROTECTED] Sent: Tuesday, July 04, 2006 2:49 AM To: log4j-user@logging.apache.org Subject: log4j custom filters how to? Hi, I am a new user to log4j. I need to write certain custom filters for log4j and am wondering how it is to be done. Any help regarding the same will be appreciated. Thanks, Sushama Shroff *** The information in this message is confidential and may be legally privileged. It is intended solely for the addressee. Access to this message by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, or distribution of the message, or any action or omission taken by you in reliance on it is prohibited and may be unlawful. Please immediately contact the sender if you have received this message in error. This email does not constitute any commitment from Cordys Holding BV or any of its subsidiaries except when expressly agreed in a written agreement between the intended recipient and Cordys Holding BV or its subsidiaries. *** - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: log4j custom filters how to?
If you use xml configuration file you can attach one ore more self written
filter class(es):
example:
appender name=CONSOLE.OUT class=org.apache.log4j.ConsoleAppender
param name=target value=System.out/
layout class=org.apache.log4j.PatternLayout
param name=ConversionPattern value=%d{HH:mm:ss.SSS} (%6r) %-5p
%-10X{category} [%-7t] %F:%L %x - %m%n/
/layout
filter class=org.apache.log4j.varia.LevelRangeFilter
param name=LevelMin value=debug/
param name=LevelMax value=info/
param name=AcceptOnMatch value=false/
/filter
filter class=ch.ergonomics.pms.common.supervision.TraceDenyFilter/
filter class=ch.ergonomics.pms.common.supervision.XMLDenyFilter/
/appender
Your own filter class extends org.apache.log4j.spi.Filter and could look like
this example:
public class TraceAllowFilter extends Filter
{
/** Standard constructor */
public TraceAllowFilter()
{
super();
}
/**
* @see
org.apache.log4j.spi.Filter#decide(org.apache.log4j.spi.LoggingEvent)
*/
public int decide( LoggingEvent aEvent )
{
if ( aEvent.getMDC( PMSLogger.MDC_CATEGORY ) == null )
{
return Filter.DENY;
}
if ( aEvent.getMDC( PMSLogger.MDC_CATEGORY ).equals( PMSLogger.TRACE ) )
{
String s = ( String ) MDC.get( PMSConfig.PROP_NAME_TRACEON );
if (( s != null )
( s.equals( FALSE ) ) )
{
return Filter.DENY;
}
return Filter.NEUTRAL;
}
return Filter.DENY;
}
}
it's just a sample. You have to code your own decision algorithm.
Be aware that the filters can be chained. Return values of ALLOW or DENY do NOT
call the next filter, only NEUTRAL will call also the next filter of the chain.
Heri
-Original Message-
From: Shroff, Sushama [mailto:[EMAIL PROTECTED]
Sent: Monday, July 03, 2006 11:19 PM
To: log4j-user@logging.apache.org
Subject: [SPAM (Bayesain Analysis)] - log4j custom filters how to? -
Bayesian Filter detected spam
Hi,
I am a new user to log4j. I need to write certain custom filters for
log4j and am wondering how it is to be done.
Any help regarding the same will be appreciated.
Thanks,
Sushama Shroff
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
