logn
Project home

LogN is a mask-based logger for Java. Instead of acquiring multiple loggers based on a class name or other string, log entries are created with a string, and appenders are then given the messages based on whether the message matches an appender's mask.

Configuration is accomplished with XML, via a file called logn.xml, which should exist somwhere in the classpath. logn.xml has the following structure:

• ln2
  • packages
    • package - the contents of this node are used to specify a package. When the configuration loads an appender, these packages will be prepended to the classname until a valid class is found.
  • jmx
  • appenders
    • appender - This node has two required attributes.

      class	This is the class of the Appender. If the configuration can't find this class directly by name, the packages (from the package node) are tried, in order.
      name	This is the name of the appender. Categories use this name to connect a logging mask to a specific appender.

      • property

        name	This is the name of a JavaBeans-compatible property in the appender.
        value	This is the value to be stored in the property.

  • categories
    • category

      mask	This attribute is a LogN mask, as a string. Sections are separated by periods (".") and contain either strings or wildcards. Wildcards follow a simple specification: "*" matches anything up to a separator; "**" matches multiple sections.
      appender	This is the name of the appender. Categories use this name to connect a logging mask to a specific appender.