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Re: [tigerstripe-users] Velocity classloader error "java.lang.NoClassDefFoundError: org/apache/log/format/Formatter"
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Hi Eric,
Thanks for the details. I got a picture on the lib directory.
As you suggested I tried to add this Avalon logging jar to my plug-in
dependency list velocity did not pick up. May be I have done some
thing wrong. I still have to check on this.
>From the stack trace, class loading seems to be failing in
VelocityEngine.init() itself. I do not think macro execution started
at all. But to confirm it I am trying to debug it further.
Based on velocity manuals (links below) and velocity-1.5 source code,
the default value for the log class is Apache Avalon. since the
relevant jar is not present velocity initialization is failing.
http://velocity.apache.org/engine/releases/velocity-1.5/developer-guide.html#velocity_configuration_keys_and_values
http://velocity.apache.org/engine/releases/velocity-1.5/developer-guide.html#configuring_logging
For your reference, here is the content from
velocity-1.5\src\java\org\apache\velocity\runtime\defaults\velocity.properties
runtime.log.logsystem.class =
org.apache.velocity.runtime.log.AvalonLogChute,org.apache.velocity.runtime.log.Log4JLogChute,org.apache.velocity.runtime.log.JdkLogChute
runtime.log = velocity.log
I have some more questions:
- Based on the above information is there any possibility of
changing run time logger for velocity in tigerstripe? At least can it
be a
minor requirement for future releases?
- Is there any way to dump the classpath in tigerstipe.log or some
other log during the plugin generation?
Regards
Kalyan
> On Tue, May 6, 2008 at 11:03 PM, Eric Dillon <erdillon@xxxxxxxxx> wrote:
> > Hi Kalyan,
> >
> > See my comments/responses inline.
> >
> > Still, I'm surprise we haven't run into this here. Are you able to figure
> > out what is the trigger of all this in the velocity templates you're using?
> >
> > Eric
> >
> >
> >
> > On 5/6/08 2:52 PM, "KV" <kalyan.abbaraju@xxxxxxxxx> wrote:
> >
> > > Hi Eric,
> > >
> > > Yes. The generation is completely failing. I did ensure that I am
> > > using only one velocity jar file.
> > > And also I have posted this question in velocity users list also. But
> > > at the moment i did not get any new answer. I am currently planning to
> > > check the following two options.
> > >
> > > 1) Include the relevant jar
> > > I checked for the class "org/apache/log/format/Formatter" and I found
> > > it in avalon-logkit-current.jar from apache.
> > > I downloaded this jar and copied to tigerstripe/lib directory to
> > > verify it works. But no luck.
> > Well, the tigerstripe/lib is only used when running Tigerstripe headless
> > (i.e. Outside of the IDE from Maven e.g.). So if you added the .jar there it
> > would not have been picked up.
> > You want to package it with your generation plugin as an additional
> > classpath entry. This way the content of the .jar is going to be available
> > to velocity at runtime. To do so, copy it in your generation project.
> > Open the ts-plugin.xml and on the "runtime" tab, add the .jar as a classpath
> > entry. Save the ts-plugin.xml file.
> >
> > Try to re-deploy and run.
> >
> >
> > >
> > > 2) Check with velocity if another log instance can be used. for example log4j.
> > > At the moment i am working on this. I can update you once I am
> > > successful in this.
> > >
> > > But I would like to understand the relevance of tigerstripe/lib
> > > directory under eclipse? Can you please enlighten me under what
> > > circumstances I can use this directory?
> > > Also if you have any other suggestions it would help me a lot.
> > As mentioned above, this tigerstripe/lib is only relevant when running
> > headless. Any .jar that needs to be visible from a generation plugin should
> > be packaged as an additional classpath entry as explained above.
> >
> > This was designed so that you can include any .jar in the code of a
> > generation plugin.
> >
> >
> > >
> > > Thanks & Best Regards
> > > Kalyan
> > >
> > > On Tue, May 6, 2008 at 5:30 PM, Eric Dillon <erdillon@xxxxxxxxx> wrote:
> > >> Hi Kalyan,
> > >>
> > >> I am afraid I don't know what is going on here. I am tempted however to
> > >> blame it on velocity :-).
> > >>
> > >> I did google the exception and saw your post on some other forum. I saw a
> > >> note there about having multiple instances of the velocity-1.5.jar which is
> > >> not the case here.
> > >>
> > >> Now, what are the symptoms of the error (beyond the log in the mail)? Does
> > >> your generation fail completely?
> > >>
> > >> Eric
> > >>
> > >>
> > >>
> > >>
> > >> On 5/2/08 11:54 AM, "KV" <kalyan.abbaraju@xxxxxxxxx> wrote:
> > >>
> > >>> Hi,
> > >>>
> > >>> I am getting the following class loader error while doing the code
> > >>> generation with my plugin. I tried to include both log4j and
> > >>> commons-logging explicitly to project class path. But it did not help.
> > >>>
> > >>> Can you please suggest a solution?
> > >>> 2008-05-02 19:41:51,515 - Log4JLogChute initialized using file
> > >>> 'velocity.log'
> > >>> 2008-05-02 19:41:51,515 - Starting Apache Velocity v1.5 (compiled:
> > >>> 2007-02-22 08:52:29)
> > >>> 2008-05-02 19:41:51,515 - Default Properties File:
> > >>> org\apache\velocity\runtime\defaults\velocity.properties
> > >>> 2008-05-02 19:41:51,515 - Trying to use logger class
> > >>> org.apache.velocity.runtime.log.AvalonLogChute
> > >>> 2008-05-02 19:41:51,515 - Couldn't find class
> > >>> org.apache.velocity.runtime.log.AvalonLogChute or necessary supporting
> > >>> classes in classpath.
> > >>> java.lang.NoClassDefFoundError: org/apache/log/format/Formatter
> > >>> at java.lang.Class.forName0(Native Method)
> > >>> at java.lang.Class.forName(Unknown Source)
> > >>> at org.apache.velocity.util.ClassUtils.getClass(ClassUtils.java:63)
> > >>> at org.apache.velocity.util.ClassUtils.getNewInstance(ClassUtils.java:95)
> > >>> at
> > >>> org.apache.velocity.runtime.log.LogManager.createLogChute(LogManager.java:14
> > >>> 7)
> > >>> at org.apache.velocity.runtime.log.LogManager.updateLog(LogManager.java:208)
> > >>> at
> > >>> org.apache.velocity.runtime.RuntimeInstance.initializeLog(RuntimeInstance.ja
> > >>> va
> > >>> :728)
> > >>> at
> > >>> org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:240)
> > >>> at
> > >>> org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:534)
> > >>> at org.apache.velocity.app.VelocityEngine.init(VelocityEngine.java:144)
> > >>> at
> > >>> org.eclipse.tigerstripe.workbench.internal.core.project.pluggable.rules.Temp
> > >>> la
> > >>> teBasedRule.setClasspathLoaderForVelocity(TemplateBasedRule.java:329)
> > >>> at
> > >>> org.eclipse.tigerstripe.workbench.internal.core.project.pluggable.rules.Arti
> > >>> fa
> > >>> ctBasedRule.trigger(ArtifactBasedRule.java:192)
> > >>> at
> > >>> org.eclipse.tigerstripe.workbench.internal.core.plugin.pluggable.PluginRuleE
> > >>> xe
> > >>> cutor.trigger(PluginRuleExecutor.java:102)
> > >>> at
> > >>> org.eclipse.tigerstripe.workbench.internal.core.plugin.pluggable.PluggablePl
> > >>> ug
> > >>> in.trigger(PluggablePlugin.java:123)
> > >>> at
> > >>> org.eclipse.tigerstripe.workbench.internal.core.plugin.PluginHousing.trigger
> > >>> (P
> > >>> luginHousing.java:40)
> > >>> at
> > >>> org.eclipse.tigerstripe.workbench.internal.core.plugin.PluginConfig.trigger(
> > >>> Pl
> > >>> uginConfig.java:250)
> > >>> at
> > >>> org.eclipse.tigerstripe.workbench.internal.core.generation.M1Generator.inter
> > >>> na
> > >>> lPluginLoop(M1Generator.java:610)
> > >>> at
> > >>> org.eclipse.tigerstripe.workbench.internal.core.generation.M1Generator.inter
> > >>> na
> > >>> lRun(M1Generator.java:553)
> > >>> at
> > >>> org.eclipse.tigerstripe.workbench.internal.core.generation.M1Generator.run(M
> > >>> 1G
> > >>> enerator.java:350)
> > >>> at
> > >>> org.eclipse.tigerstripe.workbench.eclipse.wizards.generate.NewTigerstripeRun
> > >>> Wi
> > >>> zard.finishPage(NewTigerstripeRunWizard.java:131)
> > >>> at
> > >>> org.eclipse.tigerstripe.workbench.eclipse.wizards.NewTSElementWizard$2.run(N
> > >>> ew
> > >>> TSElementWizard.java:193)
> > >>> at
> > >>> org.eclipse.jdt.internal.core.BatchOperation.executeOperation(BatchOperation
> > >>> .j
> > >>> ava:39)
> > >>> at
> > >>> org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java
> > >>> :7
> > >>> 20)
> > >>> at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1797)
> > >>> at org.eclipse.jdt.core.JavaCore.run(JavaCore.java:4466)
> > >>> at
> > >>> org.eclipse.jdt.internal.ui.actions.WorkbenchRunnableAdapter.run(WorkbenchRu
> > >>> nn
> > >>> ableAdapter.java:87)
> > >>> at
> > >>> org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext
> > >>> .j
> > >>> ava:113)
> > >>> 2008-05-02 19:41:51,515 - Trying to use logger class
> > >>> org.apache.velocity.runtime.log.Log4JLogChute
> > >>> 2008-05-02 19:41:51,515 - Using logger class
> > >>> org.apache.velocity.runtime.log.Log4JLogChute
> > >>> 2008-05-02 19:41:51,515 - Default ResourceManager initializing. (class
> > >>> org.apache.velocity.runtime.resource.ResourceManagerImpl)
> > >>> 2008-05-02 19:41:51,515 - ResourceLoader instantiated:
> > >>> org.apache.velocity.runtime.resource.loader.FileResourceLoader
> > >>>
> > >>> Regards
> > >>> Kalyan
> > >>> _______________________________________________
> > >>> tigerstripe-users mailing list
> > >>> tigerstripe-users@xxxxxxxxxxx
> > >>> https://dev.eclipse.org/mailman/listinfo/tigerstripe-users
> > >>
> > >> _______________________________________________
> > >> tigerstripe-users mailing list
> > >> tigerstripe-users@xxxxxxxxxxx
> > >> https://dev.eclipse.org/mailman/listinfo/tigerstripe-users
> > >>
> > >
> > >
> >
> > _______________________________________________
> > tigerstripe-users mailing list
> > tigerstripe-users@xxxxxxxxxxx
> > https://dev.eclipse.org/mailman/listinfo/tigerstripe-users
> >
>
>
>
>
>
> --
> Kalyan Abbaraju
> Home +91 8066649703
> Mobile +91 99005 16895
>
--
Kalyan Abbaraju
Home +91 8066649703
Mobile +91 99005 16895
