[jacorb-developer] JacORB and SLF dependency (was Re: JacORb in maven repository)

Timothy Astle timothy.astle at caris.com
Thu Jun 7 15:08:45 CEST 2012 

Sure.  SLF has various logger bindings from how I understand it.  As the 
application developer, they must choose what logging implementation that 
SLF will use and provide that connector.  Options include: JULI, log4j, 
logback, etc.  The reason is because if someone wrote an application 
based on log4j, they'd want the 3rd party component to use the same 
logging configuration.

We already have a binding provided in our application.  What's trickier 
is that we also have an older version of SLF.  Then we updated to JacORB 
3 and it provided the JULI binding.  Below you can see what happens when 
I launch the web application with both bindings in place and using an 
older SLF.

[WARNING] [talledLocalContainer] Jun 07, 2012 9:51:04 AM 
org.apache.catalina.startup.HostConfig deployWAR
[WARNING] [talledLocalContainer] INFO: Deploying web application archive 
D:\Work\myapp\target\cargo\configurations\tomcat7x\webapps\myapp.war
[WARNING] [talledLocalContainer] SLF4J: The requested version 1.6 by 
your slf4j binding is not compatible with [1.5.5, 1.5.6, 1.5.7, 1.5.8, 
1.5.9, 1.5.10]
[WARNING] [talledLocalContainer] SLF4J: See 
http://www.slf4j.org/codes.html#version_mismatch for further details.
[WARNING] [talledLocalContainer] SLF4J: Class path contains multiple 
SLF4J bindings.
[WARNING] [talledLocalContainer] SLF4J: Found binding in 
[jar:file:/D:/Work/myapp/target/cargo/configurations/tomcat7x/webapps/spatialfusionviewer/WEB-INF/lib/slf4j-jdk14-1.6.4.jar!/org/slf4j/impl/StaticLoggerBind
[WARNING] [talledLocalContainer] SLF4J: Found binding in 
[jar:file:/D:/Work/myapp/target/cargo/configurations/tomcat7x/webapps/spatialfusionviewer/WEB-INF/lib/slf4j-log4j12-1.5.10.jar!/org/slf4j/impl/StaticLoggerB
[WARNING] [talledLocalContainer] SLF4J: See 
http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
[WARNING] [talledLocalContainer] Jun 07, 2012 9:51:17 AM 
org.apache.catalina.core.StandardContext listenerStart
[WARNING] [talledLocalContainer] SEVERE: Exception sending context 
initialized event to listener instance of class 
org.apache.struts2.tiles.StrutsTilesListener
[WARNING] [talledLocalContainer] java.lang.AbstractMethodError: 
org.slf4j.impl.JDK14LoggerAdapter.log(Lorg/slf4j/Marker;Ljava/lang/String;ILjava/lang/String;Ljava/lang/Throwable;)V
[WARNING] [talledLocalContainer]        at 
org.apache.commons.logging.impl.SLF4JLocationAwareLog.info(SLF4JLocationAwareLog.java:120)
[WARNING] [talledLocalContainer]        at 
org.apache.tiles.impl.BasicTilesContainer.init(BasicTilesContainer.java:125)
[WARNING] [talledLocalContainer]        at 
org.apache.tiles.factory.TilesContainerFactory.initializeContainer(TilesContainerFactory.java:232)
[WARNING] [talledLocalContainer]        at 
org.apache.tiles.factory.TilesContainerFactory.createTilesContainer(TilesContainerFactory.java:198)
[WARNING] [talledLocalContainer]        at 
org.apache.tiles.factory.TilesContainerFactory.createContainer(TilesContainerFactory.java:163)
[WARNING] [talledLocalContainer]        at 
org.apache.tiles.web.startup.TilesListener.createContainer(TilesListener.java:90)
[WARNING] [talledLocalContainer]        at 
org.apache.struts2.tiles.StrutsTilesListener.createContainer(StrutsTilesListener.java:68)
[WARNING] [talledLocalContainer]        at 
org.apache.tiles.web.startup.TilesListener.contextInitialized(TilesListener.java:57)
[WARNING] [talledLocalContainer]        at 
org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4779)
[WARNING] [talledLocalContainer]        at 
org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5273)
[WARNING] [talledLocalContainer]        at 
org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
[WARNING] [talledLocalContainer]        at 
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895)
[WARNING] [talledLocalContainer]        at 
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871)
[WARNING] [talledLocalContainer]        at 
org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615)
[WARNING] [talledLocalContainer]        at 
org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:962)
[WARNING] [talledLocalContainer]        at 
org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1603)
[WARNING] [talledLocalContainer]        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
[WARNING] [talledLocalContainer]        at 
java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
[WARNING] [talledLocalContainer]        at 
java.util.concurrent.FutureTask.run(FutureTask.java:166)
[WARNING] [talledLocalContainer]        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
[WARNING] [talledLocalContainer]        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
[WARNING] [talledLocalContainer]        at 
java.lang.Thread.run(Thread.java:722)

I didn't spend much time on thinking of the best way to go forward, but 
maybe it could involve:
1. Consider supporting a range of revisions of SLF?
2. Consider changing the scope of the slf4j-jdk14 to provided?

Cheers!


Tim

On 07/06/2012 9:19 AM, Nick Cross wrote:
>
> Hi,
>
> Thanks for letting us know it works :-)
>
> Can you clarify your statement about slf4j please? According to 
> http://www.slf4j.org/manual.html, slf4j-jdk14-1.6.5.jar (the most 
> recent release) is the binding for java.util.logging.
>
> Regards
>
> Nick
>
>
>
> On 07/06/12 12:45, Timothy Astle wrote:
>> In case there is any doubt, it works fine for me. You just have to
>> declare the following if you need the IDL compiler and JacORB itself.
>>
>> <!-- JACORB and related dependencies. -->
>> <dependency>
>> <groupId>org.jacorb</groupId>
>> <artifactId>jacorb</artifactId>
>> <version>3.0</version>
>> </dependency>
>> <dependency>
>> <groupId>org.jacorb</groupId>
>> <artifactId>idl-compiler</artifactId>
>> <version>3.0</version>
>> </dependency>
>>
>> btw, kudos to the JacORB team for the dependency clean-up in version
>> 3.0. Nice to get rid of avalon logging :)
>>
>> The only warning I would give to people is that if they've already
>> brought in SLF4J for a more recent version of Java (5,6,7), the
>> jacorb-parent POM has a dependency on slf4j-jdk14. You must override
>> this transitive dependency to avoid class loader issues (i.e., Java or
>> your servlet container may load wrong class.) Don't worry though, you
>> should get a pretty clear error.
>>
>> I hope this helps,
>>
>> Tim
>>
>> On 07/06/2012 7:52 AM, Nick Cross wrote:
>>>
>>> Try using maven central e.g.
>>>
>>> "http://search.maven.org/#browse|-1539331823" or a mirror e.g.
>>> http://mirrors.ibiblio.org/pub/mirrors/maven2/org/jacorb/
>>>
>>> I am not familiar with mvnrepository.com - is it an official mirror?
>>>
>>>
>>> Regards
>>>
>>> Nick
>>>
>>> On 07/06/12 11:43, Lulseged Zerfu wrote:
>>>> Hi
>>>>
>>>> I am looking jacORB from the www.mvnrepository.com. I don't know it
>>>> it is where I should look jacORB from.
>>>>
>>>> http://mvnrepository.com/search.html?query=jacorb
>>>>
>>>> This query shows me that the core is there but not the idl-compiler.
>>>>
>>>> Or do you have another repository?
>>>>
>>>> Lulseged
>>>>
>>>> -----Original Message-----
>>>> From: Nick Cross [mailto:jacorb at goots.org]
>>>> Sent: den 7 juni 2012 12:39
>>>> To: Discussions concerning CORBA development with JacORB
>>>> Cc: Lulseged Zerfu
>>>> Subject: Re: [jacorb-developer] JacORb in maven repository
>>>>
>>>>
>>>> What have you tried looking at ? i.e. show me the central repository
>>>> path / poms you have used?
>>>>
>>>> I have just checked and parent/idl-compiler/core and services are all
>>>> there.
>>>>
>>>> Core is all you need for the core orb.
>>>>
>>>> Regards
>>>>
>>>> Nick
>>>>
>>>> On 07/06/12 08:36, Lulseged Zerfu wrote:
>>>>> Hi
>>>>>
>>>>> On the 23:rd of May, jacORB was announced to be available in maven
>>>>> repositories.
>>>>>
>>>>> I can only see jacORB::Core but is this all we need to run jacORB?
>>>>>
>>>>> Where is the jacORB::idl and other dependencies?
>>>>>
>>>>> Lulseged
>>>>> _______________________________________________
>>>>> jacorb-developer maillist -
>>>>> jacorb-developer at lists.spline.inf.fu-berlin.de
>>>>> https://lists.spline.inf.fu-berlin.de/mailman/listinfo/jacorb-develope 
>>>>>
>>>>> r
>>>>
>>>
>>> _______________________________________________
>>> jacorb-developer maillist -
>>> jacorb-developer at lists.spline.inf.fu-berlin.de
>>> https://lists.spline.inf.fu-berlin.de/mailman/listinfo/jacorb-developer
>>
>

-- 
Timothy Astle, BCS
Web Development Manager

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