Package org.silverpeas.kernel.logging

package org.silverpeas.kernel.logging
The Silverpeas Logging Engine.

The Java ecosystem is rich in logging solutions as it has been no standard solution provided by Java until Java 1.5. In order to be agnostic to any logging solutions and to be able to change it in the time, Silverpeas has defined its own solution with the goal to wrap any possible logging subsystem and to offer logging capabilities specific to Silverpeas.

The Silverpeas Logging Engine is based upon a set of well-defined loggers, each of them mapped to a specific Silverpeas module (a business set of features) of which Silverpeas is made up. Each logger is defined by a namespace that is a dot-separated logger hierarchy and a level that filters the kind of messages to record into the Silverpeas logs. If the level of a logger isn't set explicitly, then its level will be its nearest ancestor with a non-null logging level. It will be the first ancestor with a non-null logging level that will take in charge of the recording of the messages from its child loggers to the logs.

Silverpeas defines by configuration at least two logs: one for all traces and another for only errors. For those logs, the Logging Engine provides two handlers/adapters that are set to the Silverpeas root logger, Silverpeas. This mechanism is set up by the Silverpeas installer. It is the responsibility to the logging engine implementation to take care of the handlers/adapters for each logger that have their level set (and hence not inherited).

Author:
mmoquillon