Setting Logging Properties

DIVAs 4 employes Apache log4j, a Java-based logging utility, to capture the simulation logging information that can be used later for further analysis. log4j is highly configurable through external configuration files at runtime. In this tutorial we describe the process of specifying the configuration of a Log4j file for the evacuation simulaton module.

Configuration Steps

Right click on the “evacuation-simulation”> module and create a new file and name it “log4j.properties”.

Write the following code that indicates that the logging information will be appended to the file “admin.log”. For a detailed information on how to set these prperties, please refer to the Apache Log4j project website.

# Set root logger level 
log4j.rootLogger=INFO, A1, AdminFileAppender, CoalescingStatistics 

# A1 is set to be a ConsoleAppender.
log4j.appender.A1=org.apache.log4j.ConsoleAppender

# A1 uses PatternLayout.
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%d{HH:mm:ss.SSS} %-5p [%-26t] %-20c{1}: - %-30m%n

# Set logger levels
log4j.logger.edu.utdallas.mavs.divas=INFO
log4j.logger.org.perf4j.TimingLogger=INFO
log4j.logger.org.apache.activemq=ERROR
log4j.logger.org.apache.activemq.spring=ERROR

# AdminFileAppender - used to log messages in the admin.log file.
log4j.appender.AdminFileAppender=org.apache.log4j.FileAppender
log4j.appender.AdminFileAppender.File=admin.log
log4j.appender.AdminFileAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.AdminFileAppender.layout.ConversionPattern=%d{HH:mm:ss.SSS} %-5p [%-21t] %-20c{1}: - %-30m%n

#Time
log4j.appender.CoalescingStatistics=org.perf4j.log4j.AsyncCoalescingStatisticsAppender
log4j.appender.CoalescingStatistics.TimeSlice=1000
#log4j.appender.CoalescingStatistics.layout=org.apache.log4j.PatternLayout
#log4j.appender.CoalescingStatistics.layout.ConversionPattern=%d{HH:mm:ss.SSS} %-5p [%-21t] %-20c{1}: - %-30m%n

#Performance - TPS
#log4j.appender.JmxAttributeStatisticsAppender=org.perf4j.log4j.JmxAttributeStatisticsAppender
#log4j.appender.JmxAttributeStatisticsAppender.TagNamesToExpose=No_Reorganization-AGENT, No_Reorganization-ENVIRONMENT