Short description ¶

JMX bean which provides the functionality to change the log level of a class/package and to reload the log4j.properties during runtime.

Introduction ¶

I was facing the problem to change log4j.properties settings of classes/categories during runtime of an application. Additionally i wanted to have also the possibility to reset/reload the settings again like they was before. After studying log4j documentation i couldn't find only a half solution materialized as an jmx bean (http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/jmx/package-summary.html). After deeper google search for this issue, i found several hints how to solve this issue, which i would like to combine here.

Details ¶

Requirements ¶

Java SUN JDK 1.5 - http://java.sun.com/javase/downloads/index_jdk5.jsp
Apache log4j >= 1.2.15 - http://logging.apache.org/log4j/
Maven2 2.0.x - http://maven.apache.org/
Spring >= 2.5 - http://www.springsource.org/

Functionality ¶

All functionalities are grouped in the interface http://code.google.com/p/logging-jmx-service/source/browse/trunk/logjmxservice/src/main/java/de/stefanheintz/log/jmxservice/LoggingConfig.java of the JMX MBean http://code.google.com/p/logging-jmx-service/source/browse/trunk/logjmxservice/src/main/java/de/stefanheintz/log/jmxservice/LoggingConfigImpl.java:

setting of TRACE, DEBUG, INFO, WARN, ERROR, FATAL log levels for a class or category
disabling of logging of a class or category
show runtime log4j settings
reload the log4j.properties settings from classpath

More details are available at the Tutorial page.

Version history ¶

Version	Date	Descritpion
1.1.1	2009-05-10	Small NPE bug fixing for changing log level of a class having no log level yet
1.1.0	2009-02-10	Sending notifications whenever a log level change or reloading was triggered
1.0.0	2009-01-04	First implementation including setting of log levels and reloading of the log4j.properties