[LOG4J2-1565] PluginManager should be able to load plugins via SPI

• Type: Wish
• Status: Closed
• Priority: Major
• Resolution: Information Provided
• Affects Version/s: 2.6.2
• Component/s: Plugins
• Assignee: Unassigned
• Reporter: Philip Helger
• Created: 06/Sep/16 19:04
• Updated: 09/Sep/16 14:00
• Resolved: 09/Sep/16 14:00

Description

I want to setup a custom configuration using a special factory class (based on https://logging.apache.org/log4j/2.x/manual/customconfig.html)
As this will run in an Application server I don't have access to the system properties or to the main to call ConfigurationFactory.setConfigurationFactory
Therefore I suggest to add an SPI loading mechanism for ConfigurationFactory as well. See https://docs.oracle.com/javase/tutorial/ext/basics/spi.html for details on SPI.
Do you think this could work, or would this be a problem, if Tomcat itself is configured to use log4j? Maybe it can be done upon Servlet initialization as done in the log4j2-web project.