[LOG4J2-3238] Log4j 1.2 bridge API doesn't write the messages to rsyslog in proper "PatternLayout" mentioned in log4j.properties file when SysLogAppender is used

• Type: Bug
• Status: Reopened
• Priority: Blocker
• Resolution: Unresolved
• Affects Version/s: 2.16.0
• Component/s: API, Appenders, Core, Pattern Converters

Environment

JDK .1.8 :-

copy-jdk-configs-3.3-10.el7_5.noarch
java-1.8.0-openjdk-1.8.0.242.b08-0.el7_7.i686
java-1.8.0-openjdk-devel-1.8.0.242.b08-0.el7_7.i686
java-1.8.0-openjdk-headless-1.8.0.242.b08-0.el7_7.i686

JVM arguments :- 

 -Dlog4j1.compatibility=true 

 

Jar used :-

log4j-1.2-api-2.16.0.jar  

log4j-api-2.16.0.jar  

log4j-core-2.16.0.jar

• Assignee: Ralph Goers
• Reporter: Tukesh
• Created: 15/Dec/21 19:55
• Updated: 19/Feb/22 07:40

Description

Log4j 1.2 bridge API  doesn't write the messages to rsyslog in proper "PatternLayout" mentioned in log4j.properties file when SysLogAppender is used .

You can see log messages are missing Conversion Patterns effect like string "MyMain" , Data, ClassName etc. 

 

log4j.properties file :-

 

 log4j.rootLogger=DEBUG,SYSLOG
log4j.appender.SYSLOG=org.apache.log4j.net.SyslogAppender
log4j.appender.SYSLOG.Threshold=DEBUG
log4j.appender.SYSLOG.syslogHost=localhost
log4j.appender.SYSLOG.port=514
log4j.appender.SYSLOG.header=true
log4j.appender.SYSLOG.Facility=LOCAL3
log4j.appender.SYSLOG.layout=org.apache.log4j.PatternLayout
log4j.appender.SYSLOG.layout.conversionPattern=MyMain[%pid] :%t: %c %-4p %m%n

 

 

Source code ( LoggerExample.java ) :-

 

 

package test.logger;
import org.apache.log4j.Logger;  
import java.io.*;  
import java.sql.SQLException;  
import java.util.concurrent.TimeUnit;  
public class LoggerExample{  
    static Logger log = Logger.getLogger(LoggerExample.class.getName());  
    public static void main(String[] args)throws IOException,SQLException{  
        log.debug("log4j-shell Starting...");
        while(true){  
            System.out.println("I'm running...");
            log.debug("Test Log4j-shell this is a debug message");
            try {
                TimeUnit.SECONDS.sleep(1);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }  
    }  
}  

 

 

Sample message created :-

 

 
log4j-shell Starting...
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message
Test Log4j-shell this is a debug message