When i was trying to log on console with additivity, i realise log4j dont care
if parent categories have appropriate level to log the event.
is this a design choice and are there any other way to prevent the appenders
from logging smaller level of logging events.
Best of i can do is changing the source-code of log4j
Scenerio
I want to write all aplication logs to a file and
I want to write only error logs to console
and I dont want repeated log statements like "consolelogger.error("error 1");
filelogger.error("error 1")"
--- my log4j configutration ---
log4j.rootLogger=ERROR,consol
log4j.logger.consol =ERROR,consol
log4j.appender.consol =org.apache.log4j.ConsoleAppender
log4j.additivity.consol =true
...
log4j.logger.Application =DEBUG,Application
log4j.appender.Application =org.apache.log4j.DailyRollingFileAppender
log4j.additivity.Application =true
...
--- Code
logger.info("log 1 - LEVEL_INFO")
logger.error("log 2 - LEVEL_ERROR")
...
while i have expecting , with the code above,
log file would contains "log 1" and "log 2"
console would contains only "log 2 "
instead i have got the console and log file contains both "log 1" and "log 2 "
info
then i check the source code and i found the problem on callAppenders() method
and change the beheavior of the method.
-- old one
public void callAppenders(LoggingEvent event) {
int writes = 0;
for (Category c = this; c != null; c = c.parent) {
// Protected against simultaneous call to addAppender,
// removeAppender,...
synchronized (c) {
if (c.aai != null) {
writes += c.aai.appendLoopOnAppenders(event);
}
if (!c.additive) {
break;
}
}
}
-- i change like this
public void callAppenders(LoggingEvent event) {
int writes = 0;
for (Category c = this; c != null; c = c.parent) {
if (!event.getLevel().isGreaterOrEqual(c.getLevel()))
continue;
// Protected against simultaneous call to addAppender,
// removeAppender,...
synchronized (c) {
if (c.aai != null) {
writes += c.aai.appendLoopOnAppenders(event);
}
if (!c.additive) {
break;
}
}
}
thanks.
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