[LOG4J2-470] Resolution of ${hostName} in log4j2.xml file only works after first reference

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0-beta9
• Component/s: Configurators

Environment

Windows 7, JDK 1.7, Eclipse 4.2

• Assignee: Unassigned
• Reporter: Russell J. Nile
• Created: 20/Dec/13 16:53
• Updated: 12/Jan/14 01:51
• Resolved: 12/Jan/14 01:51

Description

I am using ${hostName} to include the hostname in the log file. When I use it it resolves to "${hostName}" the first time it is referred to in the log and then the proper hostname after that.

Example configuration (comment out the "Properties" section to duplicate):

<?xml version="1.0" encoding="UTF-8"?>
<Configuration monitorInterval="60"	name="SMSLog4JConfiguration"> <!-- add this to spit out debug about configuration: 'status="debug"'  -->

	<!-- This seems to be a bug, but the $hostName seems to need to be referenced
	     once before it can be used.  Maybe it gets correct in a future log4j2 release --> 
	<Properties>
		<Property name="theHostName">${hostName}</Property>
	</Properties>


	<Appenders>
		<RollingFile name="RollingFileAppender" fileName="/applicationlogs/CTMSApplicationService-${hostName}.log"
			filePattern="/applicationlogs/${hostName}-%d{MM-dd-yyyy}-%i.log">
			<Policies>
				<OnStartupTriggeringPolicy />
				<TimeBasedTriggeringPolicy interval="24" modulate="true" />
			</Policies>
			<PatternLayout pattern="[%d{ISO8601}] [%t] %-5level %logger{6} - %msg%n" />
		</RollingFile>
	</Appenders>
	<Loggers>
		<!-- default for "includeLocation" is false, but I want to be clear -->
		<Root level="debug" includeLocation="false">
			<AppenderRef ref="RollingFileAppender" />
		</Root>
	</Loggers>
</Configuration>