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

["Ralph Goers (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LOG4J2-470?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ralph Goers resolved LOG4J2-470.
--------------------------------

    Resolution: Fixed

Thanks for the information. It turns out that the property was not being set until after the first configuration element so having a property or a global filter first caused it to work. I have fixed this in revision 1557479. Please verify and close.

> Resolution of ${hostName} in log4j2.xml file only works after first reference
> -----------------------------------------------------------------------------
>
>                 Key: LOG4J2-470
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-470
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Configurators
>    Affects Versions: 2.0-beta9
>         Environment: Windows 7, JDK 1.7, Eclipse 4.2
>            Reporter: Russell J. Nile
>            Priority: Minor
>
> 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):
> {code}
> <?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>
> {code}



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