[LOG4J2-249] Log4jContextListener: Support property substitution in context-params

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0-beta5
• Fix Version/s: 2.0-beta7
• Assignee: Unassigned
• Reporter: Tim Tucker
• Created: 09/May/13 23:05
• Updated: 14/Jun/13 11:40
• Resolved: 31/May/13 05:12

Description

Similar to the property substitution options offered in log4j2.xml, it would be useful to allow for property substitution in the context-params for configuring Log4jContextListener.

For example, we'd like to be able to do the following:
<context-param>
<param-name>log4jConfiguration</param-name>
<param-value>${env:myVar}.log4j2.xml</param-value>
</context-param>

And have the value of myVar replaced at runtime.

(in our case, we have integration / production systems that have 1 environment variable set that controls the behavior of multiple deployed applications, each of which have different config files for each environment)