[LOG4J2-3382] ${ctx:mdcValue} no longer populating in Property tag

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.17.0
• Component/s: Configuration
• Assignee: Carter Kozak
• Reporter: Paul Brown
• Created: 31/Jan/22 14:42
• Updated: 06/Jun/22 15:23
• Resolved: 08/Feb/22 20:54

Description

Values added to the Thread Context are no longer accessible from Property tags.

<Properties>
    <Property name="filename.transaction_log">${sys:access.log.location}/${web:contextPath}{}{_}transaction_$${ctx:txLogRecordType}.log
    </Property>
<Properties>
<appenders>
    <Routing name="TRANSACTION_LOG">
        <Routes pattern="$${ctx:txLogRecordType}">
            <Route>
                <RollingFile name="Rolling-Transaction-Log-${ctx:txLogRecordType}"
                             fileName="${filename.transaction_log}"
                             filePattern="${filenamePattern.transaction_log}">
                    <PatternLayout pattern="%m" />
                    <TimeBasedTriggeringPolicy interval="1" />
                    <DefaultRolloverStrategy max="31" />
                </RollingFile>
            </Route>
        </Routes>
    </Routing>
</appenders>

 

Added to the MDC in Java:

org.slf4j.MDC.put("txLogRecordType", eventType);

The file produced now looks like:

myservice_transaction_${ctx.txLogRecordType}_2022-01-27-16.log

Prior to upgrading to log4j2 2.17.0, this interpolated as expected.

Have also tried myserver_transaction_%X{txLogRecordType}.log, but gives similar output file.

Issue Links

• duplicates: LOG4J2-3317 After 2.17.1 upgarde, Route appenders with dynamic file writing are not working .