Far be it from me to suggest how they actually implement the logging in the code base, but it is hard to go past the log4* libraries.
-----Original Message----- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Doug Sent: Tuesday, 23 March 2010 7:53 AM To: 'U2 Users List' Subject: Re: [U2] UD - Error Logging Wally, I guess I'm the taker. There is this nice open source product called log4c. It can log to files, syslog or any other destinations. It is modeled after an open source product we use called log4j. It runs on HP, RedHat, Solaris, AIX, and Windows. But since it is open source, you can port it any other platform as well. Perhaps the best part is the logging levels (TRACE, DEBUG, INFO, WARN, ERROR, and FATAL). That adds standard granularity to the logging. Additionally you can reformat the logging into any format you want. You can control the size and the number of logs you want to keep. I pulled this from our log4j configuration on our U2WebLink middleware product: # Loggers log4j.logger.com.u2logic.XLr8U2Interface.U2WebLinkLogger=INFO,U2WebLinkF ileA ppender log4j.logger.com.u2logic.XLr8U2Interface.XLr8ReplicatorLogger=INFO,XLr8R epli catorFileAppender log4j.logger.org.quartz=INFO,QuartzSchedulerFileAppender log4j.logger.org.directwebremoting=INFO,DirectWebRemotingFileAppender # # U2WebLink Log File Appender log4j.appender.U2WebLinkFileAppender=org.apache.log4j.RollingFileAppende r log4j.appender.U2WebLinkFileAppender.File=logs/U2WebLink.log log4j.appender.U2WebLinkFileAppender.Append=true log4j.appender.U2WebLinkFileAppender.ImmediateFlush=true log4j.appender.U2WebLinkFileAppender.layout=org.apache.log4j.SimpleLayou t log4j.appender.U2WebLinkFileAppender.MaxFileSize=1000KB log4j.appender.U2WebLinkFileAppender.MaxBackupIndex=10 What this means is your entire code must be changed to accommodate this new logging structure. Additionally, you could use standard tools for you log analysis instead of writing your own. We use an open source tool in Eclipse to analyze our logs that even allows us to see them live over the internet. Regards, Doug -----Original Message----- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Wally Terhune Sent: Monday, March 15, 2010 8:06 PM To: U2 Users List Subject: Re: [U2] UD - Error Logging I would be happy to entertain (and formally register) a detailed, coherent proposal for logs, error logs, diagnostic logs - location and management. Do you still want the saved_logs directory concept? (20 or configurable? Iterations saved) What happens at 'startud'? Anything happen at 'stopud'? Is the trunclog command useful? Should the detailed UniBasic run-time error message logging provided by 7.2.0 /usr/ud72/include/msglevelconfig be placed separate from udt.errlog? Should RFS have a separate log for error messages? Should RFS Archiving - have a separate log for offload messages? Client/server debug logs are inconsistent in configuration and activation. What would you propose in this area? Locations must be discoverable by tools that collect information for diagnostics (such as udtdiag). What else am I missing? Whereas I am constantly requesting more usable content of the messages, can we just focus on the overall architecture for this specific proposal? This would be something to be considered by PM for UniData.NEXT and prioritized with the rest of the enhancements. Other venues for proposals such as this are u2-users better and better forum and the UniData CAB (just recently formed by PM). Any takers? Regards, Wally Terhune U2 Support Architect Rocket Software 4700 S. 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