World of Logging
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World of Logging

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A talk I gave at the ApacheCon EU 2012. I explained on the Apache Logging project - who are we, what are we doing and what might happen in the future. As log4j 2.0 were currently in beta state, I lost ...

A talk I gave at the ApacheCon EU 2012. I explained on the Apache Logging project - who are we, what are we doing and what might happen in the future. As log4j 2.0 were currently in beta state, I lost some words on it too.

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World of Logging Presentation Transcript

  • 1. WORLD OF LOGGING
  • 2. Christian Grobmeier @grobmeier http://www.grobmeier.de
  • 3. Why should you log?
  • 4. T H EBIGGESTCHALLENGESWE H AV Ea
  • 5. SPEED!
  • 6. Failsafe. Reliable.
  • 7. Compability.
  • 8. Taste.
  • 9. Loggingwith DukeJava
  • 10. Too muchtaste...m a k e sheadache! Think on: log4j, logback, JUL, TinyLog, AVSL
  • 11. Pills:slf4j & Commons Logging
  • 12. Which pill? slf4j log4j 1 logback JUL AVSL log4j 2 Commons Logging Don‘t forget PAX!
  • 13. log4j 2.0 is thefuture of log4jIntegrates well with: slf4j log4j 1.x Commons Logging
  • 14. What makeslog4j 2.0 better?
  • 15. API++ Instead:if(logger.isDebugEnabled()) logger.info("Hi, " + u.getA() + “ “ + u.getB());
  • 16. API++ Instead:if(logger.isDebugEnabled()) logger.info("Hi, " + u.getA() + “ “ + u.getB()); Write:logger.info("Hi, {} {} ", u.getA(), u.getB());
  • 17. Better Filter Marker:Marker SQL_MARKER = MarkerManager.getMarker("SQL");logger.debug( SQL_MARKER, "SELECT * FROM {}", table);
  • 18. Plugins@Plugin(name = "Sandbox", type = "Core", elementType = "appender")public class Mine extends AppenderBase { private Mine(String name, Filter f) { super(name, f, null); } public void append(LogEvent e) { … }
  • 19. Plugins@PluginFactorypublic static Mine create( @PluginAttr("name") String n, @PluginElement("filters") Filter f) { return new Mine(n, f);}
  • 20. Configuration<appenders> <Console name="Console" target="SYSTEM_OUT"> <PatternLayout pattern="%d{HH:mm} %msg%n"/> </Console></appenders>
  • 21. Configuration{ "configuration": … "appenders": { "Console": { "name": "STDOUT", "PatternLayout": { "pattern": "%m%n" } }, ...
  • 22. Configuration Reloading<configuration monitorInterval="30">...</configuration>
  • 23. log4j 1.x 2314 logback 2116log4j 2.x 2386Disabled 5 SPEED!Logging Performance in ns
  • 24. There is moresweetness
  • 25. CHAINSAW
  • 26. The story oflog4php2004 2007 2009 2010
  • 27. What‘s with...log4netlog4cxx
  • 28. The story oflog4php Community
  • 29. Good times,bad times2000 2009 2010 2011
  • 30. We need your HELPCurrently only4 regular codecontributors.
  • 31. But weFIGHT!6 Releases~750 Commits~600 dev Mailsin 2012 only!
  • 32. Seriously.Isn‘t logging justBORING?
  • 33. Well... howdo you log onyour mobile/cloud apps?
  • 34. With new innovation,new logging challenges come up. Logging needsinnovation too.Look at Apache Flume.
  • 35. Upcoming at the Incubator Guice Components
  • 36. Instead:Logger logger = Logger.getLogger( „test“);
  • 37. Instead:Logger logger = Logger.getLogger( „test“); Write: @InjectLogger Logger logger;
  • 38. Remember: Logging is mission critical. Don‘t go without.
  • 39. We are hiring! use it! ask questions! spread the love! send patches!general@logging.apache.org
  • 40. Thank you! Christian Grobmeier @grobmeier http://www.grobmeier.de Follow me, if you dare!
  • 41. Image Credits Earth (Nasa) Vulcano (Flickr: Martin Barland) Tiger (Flickr: TeryKats) Gazelle (Flickr: fwooper)Golden Gate Bridge (Flickr: TimeLapseBlog.com) Pens (Flickr: JD | Photography) Wineglass (Flickr: Willia4) Headache (Flickr: Threephin) Pills (Dr. Michael Günther) Wheelgear (Flickr: ralphbijker) Grapes (Flickr: RVWithTito) Chainsaw (Flickr: Dave Hosford) Elephant (Flickr: Werner Vermaak) Haunted House (Flickr: barb_ar) SOS (Flickr: Daquella Manera) Bathtime muscles (Flickr: mollypop) Yawning Animal (Flickr: robef) Mobile (Flickr: twicepix) Clouds (Flickr: karindalziel) Fight (Flickr: KellBailey)