[Engine-devel] Does these ERROR will effect WebAdmin build?

[Juan Hernandez]

On 01/07/2014 11:28 AM, Vojtech Szocs wrote:
> Hi,
> 
> (CC'ing Juan, please feel free to correct/add to my comments.)
> 
> I think that ERRORs such as:
> 
>   [ERROR] [AppClassLoader at ...] ...
>   [ERROR] [GinBridgeClassLoader at ...] ...
> 
> come from AspectJ load-time weaver [1] logging its output to stderr.
> 
>   [1] GWT compilation includes JVM args:
>       -javaagent:/path/to/aspectjweaver-${aspectj.version}.jar
> 
> We use AspectJ [2] to prevent GWT compiler from optimizing-out code
> in backend business entities, i.e. some code in business entities is
> not used on client and GWT compiler thinks its dead code, but when
> it's optimized-out we would face serialization errors on server.
> 
>   [2] frontend/webadmin/modules/gwt-extension/
>       src/main/java/org/ovirt/engine/ui/gwtextension/DontPrune.java
> 
> So these kinds of ERRORs are harmless.
> 
> The other ERRORs such as:
> 
>   [ERROR] ... java.util.prefs.FileSystemPreferences$1 run
>   [ERROR] INFO: Created user preferences directory.
> 
> come from Java's "Preferences" subsystem, as we override default
> preference file locations [3] in order to avoid conflicts when
> running multiple JVMs at once, i.e. parallel Engine build.
> 
>   [3] GWT compilation includes JVM args:
>       -Djava.io.tmpdir="${project.build.directory}/tmp"
>       -Djava.util.prefs.systemRoot="${project.build.directory}/tmp/.java"
>       -Djava.util.prefs.userRoot="${project.build.directory}/tmp/.java"
> 
> Also these kinds of ERRORs are harmless.
> 
> So for now, you can safely ignore these ERRORs.
> 
> To me, it seems that when gwt-maven-plugin:compile goal executes,
> it spawns new JVM (invoking GWT compiler) and *redirects* stdout
> of this JVM to plugin logger's stderr.
> 
> Juan, what are your thoughts? (maybe I'm missing something)
> 

You are right Vojtech, those error messages are harmless.

> 
> ----- Original Message -----
>> From: "Chuan Liao (Jason, MCXS-CQ)" <chuan.liao at hp.com>
>> To: engine-devel at ovirt.org
>> Sent: Tuesday, January 7, 2014 3:47:57 AM
>> Subject: [Engine-devel] Does these ERROR will effect WebAdmin build?
>>
>>
>>
>> Hi All,
>>
>>
>>
>> When I build the WebAdmin from development mode on oVirt engine, I meet these
>> ERROR message:
>>
>>
>>
>> [INFO]
>>
>> [INFO] --- gwt-maven-plugin:2.5.1:compile (gwtcompile) @ webadmin ---
>>
>> [WARNING] Don't declare gwt-dev as a project dependency. This may introduce
>> complex dependency conflicts
>>
>> [ERROR] [AppClassLoader at 11a40fff] info AspectJ Weaver Version 1.6.11 built on
>> Tuesday Mar 15, 2011 at 15:31:04 GMT
>>
>> [ERROR] [AppClassLoader at 11a40fff] info register classloader
>> sun.misc.Launcher$AppClassLoader at 11a40fff
>>
>> [ERROR] [AppClassLoader at 11a40fff] info using configuration
>> file:/home/jason/workspace/ovirt-engine/frontend/webadmin/modules/gwt-extension/target/gwt-extension-3.4.0-SNAPSHOT.jar!/META-INF/aop.xml
>>
>> [ERROR] [AppClassLoader at 11a40fff] info using configuration
>> file:/home/jason/workspace/ovirt-engine/frontend/webadmin/modules/gwt-extension/target/gwt-extension-3.4.0-SNAPSHOT-sources.jar!/META-INF/aop.xml
>>
>> [ERROR] [AppClassLoader at 11a40fff] info register aspect
>> org.ovirt.engine.ui.gwtextension.DontPrune
>>
>> [ERROR] [AppClassLoader at 11a40fff] info register aspect
>> org.ovirt.engine.ui.gwtextension.DontPrune
>>
>> [ERROR] Jan 06, 2014 6:38:29 PM java.util.prefs.FileSystemPreferences$1 run
>>
>> [ERROR] INFO: Created user preferences directory.
>>
>> [INFO] Compiling module org.ovirt.engine.ui.webadmin.WebAdmin
>>
>> [ERROR] [AppClassLoader at 11a40fff] warning javax.* types are not being woven
>> because the weaver option '-Xset:weaveJavaxPackages=true' has not been
>> specified
>>
>> [ERROR] [GinBridgeClassLoader at 8c2ac32] info AspectJ Weaver Version 1.6.11
>> built on Tuesday Mar 15, 2011 at 15:31:04 GMT
>>
>> [ERROR] [GinBridgeClassLoader at 8c2ac32] info register classloader
>> com.google.gwt.inject.rebind.GinBridgeClassLoader at 8c2ac32
>>
>> [ERROR] [GinBridgeClassLoader at 8c2ac32] info using configuration
>> file:/home/jason/workspace/ovirt-engine/frontend/webadmin/modules/gwt-extension/target/gwt-extension-3.4.0-SNAPSHOT.jar!/META-INF/aop.xml
>>
>> [ERROR] [GinBridgeClassLoader at 8c2ac32] info using configuration
>> file:/home/jason/workspace/ovirt-engine/frontend/webadmin/modules/gwt-extension/target/gwt-extension-3.4.0-SNAPSHOT-sources.jar!/META-INF/aop.xml
>>
>> [ERROR] [GinBridgeClassLoader at 8c2ac32] info register aspect
>> org.ovirt.engine.ui.gwtextension.DontPrune
>>
>> [ERROR] [GinBridgeClassLoader at 8c2ac32] info register aspect
>> org.ovirt.engine.ui.gwtextension.DontPrune
>>
>> [INFO] Computing all possible rebind results for
>> 'org.ovirt.engine.ui.webadmin.ApplicationTemplates'
>>
>>
>>
>> Build seems that the oVirt engine could work well after the build,
>>
>> does anybody know these errors maybe effect something, and how to prevent
>> them from maven build log?
>>
>>
>>
>> Best Regards,
>> Jason Liao

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