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From "Stefan Seelmann (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DIRSTUDIO-1042) Fix logging system
Date Mon, 18 May 2015 19:41:00 GMT

    [ https://issues.apache.org/jira/browse/DIRSTUDIO-1042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14548620#comment-14548620
] 

Stefan Seelmann commented on DIRSTUDIO-1042:
--------------------------------------------

http://svn.apache.org/r1679799

It seems to work now. The slf4j-eclipselog is now a fragment for slf4j. In Studio RCP app
we ship this slf4j binding by default. If a users installs in regular Eclipse from update
site slf4j binding is optional. I hope that way we can avoid conflicts.

All logs now end up in Eclipse Log '<workspace>/.metadata/.log' and can be viewed in
the Error Log view. Only log levels "error" and "warn" are forwarded. The default Eclispe
log level is ALL and it would be annoying for a user who installs Studio would be flooded
by messages. The flow of log messages looks like this:
* Eclipse plugins log directly to Eclipse Log
* API and ApacheDS bundles log via slf4j. The slf4j-eclipselog bundle forwards those log messages
to Eclipse Log
* SWTBot uses log4j. The log4j-over-slf4j implements the log4j API but sends log messages
to slf4j implementation. Again the slf4j-eclipselog bundle forwards those log messages to
Eclipse Log.


> Fix logging system
> ------------------
>
>                 Key: DIRSTUDIO-1042
>                 URL: https://issues.apache.org/jira/browse/DIRSTUDIO-1042
>             Project: Directory Studio
>          Issue Type: Bug
>            Reporter: Stefan Seelmann
>             Fix For: 2.0.0-M9
>
>
> The logging system is broken. There seem to be multiple issues.
> 1. When starting Studio a message like this is printed:
> {noformat}
> log4j:WARN No appenders could be found for logger (org.apache.directory.api.ldap.model.schema.parsers.AbstractSchemaParser).
> log4j:WARN Please initialize the log4j system properly.
> log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
> {noformat}
> In API and ApacheDS bundles we use slf4j. Currently we add slf4j-log4j12 binding and
log4j bundles. However there is no log4j.properties configuration.
> One approach is to keep log4j add a Fragement-Host for log4j that contains the log4j.properties.
> Another approach is to remove log4j and add our own slf4j binding that forwards logs
to Eclipse/OSGI log service.
> 2. When running SWTBot tests lot of server logs are printed ot stdout.



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