[logback-user] Config file failures unexplained in list or JIRA

[Tony Trinh]

On Fri, Nov 23, 2012 at 7:41 AM, RobOaks <roboaks at comcast.net> wrote:

>
> I am encountering several initialization errors with the logback.xml file
> (below) that do not seem to be addressed in either this mailing list or
> JIRA. I am running Logback 1.0.7 with SLF4J 1.7.2.
>
> During initialization I receive the following Logback errors:
> 1. No applicable action for [outputPatternAsHeader]. Try as I might, I can
> not get Logback to recognize this property.


Double-check your classpath. It might be pointing to a version of logback
that's older than 1.0.3 (where <outputPatternAsHeader> was introduced). [1]

2. No applicable action for [immediateFlush]. This error may be expected, as
> I was able to glean from the list and JIRA that this property has been
> eliminated. Please confirm.
>

No, <immediateFlush> is still a valid property for layout encoders in
logback-1.0.7. [2]

3. no applicable action for [withJansi] / There is no conversion class
> registered for composite conversion word [highlight]. I am including
> jansi-1.8.jar in the classpath but, obviously, this wouldn’t even come into
> play if withJansi isn’t even recognized.
>

I don't have a Windows machine handy at the moment, but I'm guessing it's
the same issue mentioned previously (an old version of logback in your
classpath).


> 4. Could not find Janino library on the class path. Skipping conditional
> processing. Both commons-compiler.jar and janino.jar 2.6.1 are on the
> classpath. I understand that there are potential issues with the use of
> conditional processing because of Janino and I’m wondering if I should
> abandon this feature, though it makes the config file significantly more
> elegant.
>
>
To use Janino, you must include *two* relevant jars: janino.jar and
commons-compiler.jar. [3]

I just tried your logback configuration with logback-1.0.7 and Janino, and
there were no config errors. It output correctly to the console (with the
color codes), and it correctly wrote the pattern header to the log file at
/tmp/its/Idcp.log. [4]

I wrote a HelloWorld application (output via SLF4J) with Eclipse Juno on
OSX Mountain Lion. I included the following jars:
 * slf4j-api-1.7.2.jar
 * logback-core-1.0.7.jar
 * logback-classic-1.0.7.jar
 * janino-commons-compiler-2.6.1.jar
 * janino-2.6.1.jar

[1]
http://logback.qos.ch/apidocs/ch/qos/logback/core/pattern/PatternLayoutEncoderBase.html#setOutputPatternAsHeader(boolean)
[2]
http://logback.qos.ch/apidocs/ch/qos/logback/core/encoder/LayoutWrappingEncoder.html#setImmediateFlush(boolean)
[3] http://logback.qos.ch/setup.html#janino
[4] http://pastebin.com/ZJpdbf2c
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