[LOG4J2-3350] Routing appender does not expand nested variables

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.17.1
• Fix Version/s: 2.17.2
• Component/s: Appenders
• Assignee: Unassigned
• Reporter: Stefano Maioli
• Created: 19/Jan/22 10:13
• Updated: 13/Feb/22 07:57
• Resolved: 19/Jan/22 16:53

Description

Routing appender does not expand anymore nested variables.

Using the configuration below, Log4J version 2.14.0 create correctly the file C:\tmp\test.log, but from Log4J version 2.17.0 the property expansion doesn't work anymore and a wrong file ${drive}${path}${name} is written in the current working directory.

 

 

<Properties>
    <Property name="pcode">def</Property>
    <Property name="drive">C:</Property>
    <Property name="path">/tmp/</Property>
    <Property name="name">test.log</Property>
    <Property name="filename">${drive}${path}${name}</Property>
    <Property name="filepattern">${filename}.%i.backup</Property>
</Properties>
<Appenders>
    <Routing name="Routing">
        <Routes pattern="$${map:pcode}">
            <Route>
                <RollingFile name="Rolling" fileName="${filename}" filePattern="${filepattern}">
                    <PatternLayout>
                        <pattern>%map{data}%n</pattern>
                    </PatternLayout>
                    <SizeBasedTriggeringPolicy size="500" />
                </RollingFile>
            </Route>
        </Routes>
    </Routing>
</Appenders>

 

Issue Links

• duplicates: LOG4J2-3317 After 2.17.1 upgarde, Route appenders with dynamic file writing are not working .
• duplicates: LOG4J2-3346 After 2.17.0 upgarde Route appenders with dynamic file writing are not working
• fixes: LOG4J2-3259 Limit string interpolation recursion level.
• links to: GitHub Pull Request #722
• links to: GitHub Pull Request #732