[jira] [Resolved] (LOG4J2-3562) Lookups are not substituted when pattern is created programmatically

["Piotr Karwasz (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LOG4J2-3562?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Piotr Karwasz resolved LOG4J2-3562.
-----------------------------------
    Resolution: Not A Bug

> Lookups are not substituted when pattern is created programmatically
> --------------------------------------------------------------------
>
>                 Key: LOG4J2-3562
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-3562
>             Project: Log4j 2
>          Issue Type: Bug
>    Affects Versions: 2.18.0, 2.17.2, 2.19.0
>            Reporter: Calixte Bonsart
>            Priority: Major
>
> Starting in version 2.17.2, when programmatically creating an appender with a pattern that contains a lookup, that lookup is not substituted anymore. The lookup works when it is defined in the XML configuration file. The same code works in version 2.17.1 and below.
> {code:java}
> % java -cp log4j-api-2.17.1.jar:log4j-core-2.17.1.jar -Dlog4j2.configurationFile=log4j2.xml Main.java
> Java version 17.0.3 - Hello World
> Java version 17.0.3 - Hello World
> % java -cp log4j-api-2.17.2.jar:log4j-core-2.17.2.jar -Dlog4j2.configurationFile=log4j2.xml Main.java
> Java version 17.0.3 - Hello World
> ${java:version} - Hello World
> % java -cp log4j-api-2.18.0.jar:log4j-core-2.18.0.jar -Dlog4j2.configurationFile=log4j2.xml Main.java
> Java version 17.0.3 - Hello World
> ${java:version} - Hello World
> {code}
> {code:java}
> public class Main{
> 	public static void main(String[] args){
> 		var logger = LogManager.getLogger("Main");
> 		logger.info("Hello World");
> 		var ctx = (LoggerContext)LogManager.getContext(false);
> 		var config = ctx.getConfiguration();
> 		var layout = PatternLayout.newBuilder()
> 				.withPattern("${java:version} - %msg%n")
> 				.build();
> 		var appender = ConsoleAppender.newBuilder()
> 				.setLayout(layout)
> 				.setTarget(Target.SYSTEM_OUT)
> 				.setName("Console")
> 				.build();
> 		config.addAppender(appender);
> 		appender.start();
> 		var loggerConfig = new LoggerConfig("Main", Level.INFO, false);
> 		loggerConfig.addAppender(appender, null, null);
> 		config.addLogger("Main", loggerConfig);
> 		ctx.updateLoggers();
> 		logger.info("Hello World");
> 	}
> }
> {code}
> {code:xml}
> <?xml version="1.0" encoding="UTF-8"?>
> <Configuration>
>     <Appenders>
>         <Console name="Console" target="SYSTEM_OUT">
>             <PatternLayout pattern="${java:version} - %msg%n" />
>         </Console>
>     </Appenders>
>     <Loggers>
>         <Root level="info">
>             <AppenderRef ref="Console" />
>         </Root>
>     </Loggers>
> </Configuration>
> {code}



--
This message was sent by Atlassian Jira
(v8.20.10#820010)