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From Jean-Baptiste Onofré ...@nanthrax.net>
Subject Re: Flyway and Karaf
Date Thu, 01 Aug 2019 04:23:44 GMT
Hi,

NoClassDefFoundError is certainly due to a class (or several classes) in
different classloaders.

I don't know Flyway, so I have to take a look how they load the
providers. It seems an issue in Flyway on OSGi.

Regards
JB

On 31/07/2019 22:45, Kushal Gautam wrote:
> Hi,
> 
>  I am trying to use Flyway in my Karaf instance.
> 
> I have prepared a demo to reproduce the error that I have encountered at
> https://github.com/cooshal/karaf-flyway.
> 
> I am using a custom built karaf distribution.
> 
> I have created two different modules inside db-migrations:
> 1. flyway provider which has implementations to carry out flyway migrations
> 2. karaf command, which invokes the implementation of flyway provider
> bundle.
> 
> I tried following:
> 
> karaf@root()> dbf:migrate
> Error executing command: java.lang.NoClassDefFoundError: Could not
> initialize class org.flywaydb.core.Flyway
> 
> karaf@root()> log:tail
> 22:37:11.081 ERROR [Karaf local console user karaf] Exception caught
> while executing command
> java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError:
> Could not initialize class org.flywaydb.core.Flyway
>         at java.util.concurrent.FutureTask.report(FutureTask.java:122)
> ~[?:?]
>         at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:?]
>         at
> org.apache.felix.gogo.runtime.CommandSessionImpl$JobImpl.run(CommandSessionImpl.java:829)
> ~[?:?]
>         at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> ~[?:?]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:?]
>         at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> ~[?:?]
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> ~[?:?]
>         at java.lang.Thread.run(Thread.java:745) [?:?]
> Caused by: java.lang.NoClassDefFoundError: Could not initialize class
> org.flywaydb.core.Flyway
>         at
> com.example.db.migrations.FlywayDBMigrations.migrate(FlywayDBMigrations.java:16)
> ~[?:?]
>         at
> com.example.flyway.command.MigrateDatabaseCommand.execute(MigrateDatabaseCommand.java:20)
> ~[?:?]
>         at
> org.apache.karaf.shell.impl.action.command.ActionCommand.execute(ActionCommand.java:84)
> ~[?:?]
>         at
> org.apache.karaf.shell.impl.console.osgi.secured.SecuredCommand.execute(SecuredCommand.java:68)
> ~[?:?]
>         at
> org.apache.karaf.shell.impl.console.osgi.secured.SecuredCommand.execute(SecuredCommand.java:86)
> ~[?:?]
>         at
> org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:571) ~[?:?]
>         at
> org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:497)
> ~[?:?]
>         at
> org.apache.felix.gogo.runtime.Closure.execute(Closure.java:386) ~[?:?]
>         at org.apache.felix.gogo.runtime.Pipe.doCall(Pipe.java:417) ~[?:?]
>         at org.apache.felix.gogo.runtime.Pipe.call(Pipe.java:229) ~[?:?]
>         at org.apache.felix.gogo.runtime.Pipe.call(Pipe.java:59) ~[?:?]
>         ... 4 more
> 
> I am getting this error from
> https://github.com/cooshal/karaf-flyway/tree/master/db-migrations/flyway-provider
> 
> I also tried installing flyway-core bundle in Karaf, but it did not
> work. I got the same error.
> 
> Do I need to configure some settings in the pom file of this project?
> (https://github.com/cooshal/karaf-flyway/blob/master/db-migrations/flyway-provider/pom.xml)
> 
> Any feedback would be very helpful.
> 
> Regards,
> Cooshal.

-- 
Jean-Baptiste Onofré
jbonofre@apache.org
http://blog.nanthrax.net
Talend - http://www.talend.com

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