SLF4J + logback + JBoss 7?
Has anyone got SLF4J / logback to work with JBoss 7?
Previously, I was able to get my app to work in JBoss 5.1 by putting my "logback.groovy" in [server]/conf, and the logback core, classic (0.9.28), and Groovy (1.8.0) JARs in [server]/lib.
For JBoss 7.0.1, I've got the Groovy and logback modules set up OK (the .index files have been created), my EAR's MANIFEST.MF declares dependencies on both modules, and my "logback.groovy" is deployed in my WAR module's WEB-INF/classes, within my EAR. The EAR definitely deploys OK - lights are green...
Despite this, the only logging rules that actually get applied are the standard console/server.log ones set up in "standalone.xml". Yes, I can see my log statements (so SLF4J is working), but my logback rules, appenders, etc. are being ignored. There are no references to either logback or Groovy in any of that logging, so I'm assuming that I've not done enough to trigger logback's loading and finding my script.
There are other things I could try, but it would be good to know if other people have tried this. If they haven't, perhaps that's a sign that I should just throw in my lot with JBoss Logging?
Answer
Are you sure logback is active? If logback cannot find a configuration file, i.e. logback.groovy or logback.xml, it will print a warning message on the console. The output should be similar to:
12:49:22,078 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
12:49:22,093 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.xml]
12:49:22,093 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Setting up default configuration.
Do you see any such output on the console? If not, assuming that Jboss 7 is bundled with an slf4j-binding, you are probably already using Jboss logging. (Your calls to the slf4j api are being sent to jboss logging instead of logback.)
The Jboss folks should be contacted about using a logging backend other than jboss-logging.
Digging a little further, I noticed that JAS7 ships with a file called slf4j-jboss-logmanager-1.0.0.GA.jar located under the ./modules/org/slf4j/impl/main/ folder. The contents of this file show that it is definitely an slf4j binding. I do not know how Jboss "modules" work but removing/disabling slf4j-jboss-logmanager is the way to go if you wish logback-classic to be picked up by slf4j.