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From <cost...@covalent.net>
Subject Re: Commons Logging Listener
Date Mon, 22 Apr 2002 00:53:11 GMT
+1, but maybe it is possible to fix the err. redirection somehow. 


Costin

On Sun, 21 Apr 2002, Erik Hatcher wrote:

> I've developed a CommonsLoggingListener, modeled after the Log4j one, but
> using the Jakarta Commons Logging package (1.0 release).
> 
> I've modified Ant's build.xml to do all the right things, putting it into
> optional.jar and such just like the Log4jListener.
> 
> Is anyone opposed to this being added for Ant 1.5?
> 
> If not, then I'll commit it soon.  I've tested it using Log4j and the NoOp
> log and its working fine in both cases. The nice thing about having this
> added to Ant 1.5 is that we can then say we natively support JDK 1.4's
> logging facilities, since Commons Logging does. But it does make our
> Log4jListener a bit obsolete, but useful if you want to use Log4j without
> also installing the commons-logging.jar.
> 
> Testing against the SimpleLog seems to kill the build though.  The SimpleLog
> writes to System.err, which gets trapped by Ant, so I'm guessing its stuck
> in some kind of ugly loop - and the same thing happens if you use the
> ConsoleAppender with Log4j. This is just one of the caveats about using a
> BuildListener, of course - but its still odd to see this:
> 
> > set
> ANT_OPTS=-Dorg.apache.commons.logging.Log=org.apache.commons.logging.impl.Si
> mpleLog
> > ant
> 
> [INFO] Project - -Build started.
> [INFO] Project - -Build started.
> [INFO] Project - -Build started.
> [INFO] Project - -Build started.
> .
> .
> .
> 
> And then after a bunch of that it stops with no error and build did not run.
> At least this is documented that listeners/loggers that write to
> System.out/.err could get into an infinite loop. I'll be sure to document
> this a bit more specifically mentioning not to use ConsoleAppender with
> Log4j or SimpleLog with Commons Logging.
> 
>     Erik
> 
> 
> 
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> 


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