[LOG4J2-3431] log4j bridge API :- Log message filtering based on UtilLoggingLevel fails and all messages are written into log files

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate

Environment

JDK 1.8

 

-Dlog4j1.compatibility=true 

1. log4j-1.2-api-2.17.2.jar
2. log4j-api-2.17.2.jar
3. log4j-core-2.17.2.jar

 

 

• Assignee: Piotr Karwasz
• Reporter: Tukesh
• Created: 09/Mar/22 08:31
• Updated: 14/Mar/22 09:19
• Resolved: 12/Mar/22 20:39

Description

log4j bridge API :- Log message filtering based on UtilLoggingLevel fails and all messages are written into log files

 

// demo code

package test.logger;import org.apache.log4j.Logger;  
import org.apache.log4j.helpers.UtilLoggingLevel;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{        System.out.println("I'm running...");

    while(true){
            System.out.println("I'm running...");           
            
            log.info("Log4j-shell this is a info message");
            
            log.log(UtilLoggingLevel.INFO,"INFO");
            log.log(UtilLoggingLevel.FINE,"FINE");
            log.log(UtilLoggingLevel.FINER,"FINER");            
            log.log(UtilLoggingLevel.FINEST,"FINEST");
            log.log(UtilLoggingLevel.CONFIG,"CONIG");          
            
            try {
                TimeUnit.MILLISECONDS.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }  
    }  
}   

log4j.rootLogger=FINE#org.apache.log4j.helpers.UtilLoggingLevel,DMCC_TRACE_LOGGER
 
log4j.appender.DMCC_TRACE_LOGGER.Threshold=FINE#org.apache.log4j.helpers.UtilLoggingLevel
log4j.appender.DMCC_TRACE_LOGGER=org.apache.log4j.RollingFileAppender log4j.appender.DMCC_TRACE_LOGGER.File=Dmcc-trace.log log4j.appender.DMCC_TRACE_LOGGER.Append=true log4j.appender.DMCC_TRACE_LOGGER.layout=org.apache.log4j.PatternLayout log4j.appender.DMCC_TRACE_LOGGER.layout.ConversionPattern=%d DmccMain[%X{PID}] :%t: %c %-4p - %m%n log4j.appender.DMCC_TRACE_LOGGER.maxFileSize=10MB log4j.appender.DMCC_TRACE_LOGGER.maxBackupIndex=20

 

 

Investigation :- 

convertLevel function from OptionConverter.java doesn't consider UtilLoggingLevel level for mapping. so it sets Level as DEBUG for UtilLoggingLevel classes.

// code placeholder

final org.apache.logging.log4j.Level level = levelStr == null ? org.apache.logging.log4j.Level.ERROR : 
OptionConverter.convertLevel(levelStr, org.apache.logging.log4j.Level.DEBUG);
             loggerConfig.setLevel(level);
             LOGGER.debug("Logger {} level set to {}", loggerName, level);             

 
OptionConverter.java :-
  public static  org.apache.logging.log4j.Level convertLevel(final Level level) {
        if (level == null) {
            return org.apache.logging.log4j.Level.ERROR;
        }
        if (level.isGreaterOrEqual(Level.FATAL)) {
            return org.apache.logging.log4j.Level.FATAL;
        } else if (level.isGreaterOrEqual(Level.ERROR)) {
            return org.apache.logging.log4j.Level.ERROR;
        } else if (level.isGreaterOrEqual(Level.WARN)) {
            return org.apache.logging.log4j.Level.WARN;
        } else if (level.isGreaterOrEqual(Level.INFO)) {
            return org.apache.logging.log4j.Level.INFO;
        } else if (level.isGreaterOrEqual(Level.DEBUG)) {
            return org.apache.logging.log4j.Level.DEBUG;
        } else if (level.isGreaterOrEqual(Level.TRACE)) {
            return org.apache.logging.log4j.Level.TRACE;
        }
        return org.apache.logging.log4j.Level.ALL;
    }
 

Issue Links

• duplicates: LOG4J2-3419 Unable to create custom logging level using log4j 2 Bridge API