alma.acs.logging.adapters

Class Log4jFactory

java.lang.Object

alma.acs.logging.adapters.Log4jFactory

public class Log4jFactory
extends java.lang.Object

Redirects log4j logs to ACS logging, see http://jira.alma.cl/browse/COMP-8423

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	LASER_LOGGER_NAME_PREFIX Laser alarm system logger name base.

Constructor Summary

Constructors

Constructor and Description
Log4jFactory()

Method Summary

Modifier and Type	Method and Description
static void	enableAcsLogging() This method must be called once in order to enable ACS logging behind the scenes of log4j logging.
Logger	makeNewLoggerInstance(java.lang.String name)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LASER_LOGGER_NAME_PREFIX

public static final java.lang.String LASER_LOGGER_NAME_PREFIX

Laser alarm system logger name base.

See Also:

Constant Field Values

Constructor Detail

Log4jFactory

public Log4jFactory()

Method Detail

enableAcsLogging

public static void enableAcsLogging()

This method must be called once in order to enable ACS logging behind the scenes of log4j logging.

The log4j framework is quite resistant against being substituted with a different logging framework. Even though it is possible to configure a custom logger factory using log4j.loggerFactory, that factory will not be used when 3rd party code calls the usual Logger.getLogger(name). It seems to make sense only for cases where the custom logger is used as in MyLogger.getLogger(name). log4j-over-slf4j (http://www.slf4j.org/legacy.html) simply re-implements the relevant log4j classes, which is too much trouble here for us because only basic log4j features are being used.

We make use of the RepositorySelector mechanism, which log4j foresees for a different purpose, to separate logging contexts in an application server that does not have classloader separation. (See also http://articles.qos.ch/sc.html.) It is not possible to configure this externally, so that an application must call this method. See also http://mail-archives.apache.org/mod_mbox/logging-log4j-user/200904.mbox/%3Ca44e15a30904020424g4b7d7fcx63ca32152c81f80d@mail.gmail.com%3E

makeNewLoggerInstance

public Logger makeNewLoggerInstance(java.lang.String name)