Hi JB:
I tried the configuration below, following the example (
https://github.com/FlavioF/fabric8-osgi-flyway-example/blob/master/fabric8-osgi-flyway/pom.xml
)
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<extensions>true</extensions>
<configuration>
<instructions>
<Fragment-Host>org.flywaydb.core</Fragment-Host>
<Export-Package>
db.migration,
com.example.db.migrations
</Export-Package>
<Import-Package>
org.flywaydb.core.*,
com.example.db.migrations.*,
org.osgi.framework,
com.h2database
</Import-Package>
</instructions>
</configuration>
<executions>
<execution>
<id>bundle-manifest</id>
<phase>process-classes</phase>
<goals>
<goal>manifest</goal>
</goals>
</execution>
</executions>
</plugin>
But, with this my bundle does not start
Suppressed: java.lang.Exception: Error starting bundle 85: Fragment bundles
can not be started.
at
org.apache.karaf.bundle.command.BundlesCommand.doExecute(BundlesCommand.java:67)
~[?:?]
at
org.apache.karaf.bundle.command.BundlesCommand.execute(BundlesCommand.java:55)
~[?:?]
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)
~[?:?]
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: org.osgi.framework.BundleException: Fragment bundles can
not be started.
at
org.apache.felix.framework.Felix.startBundle(Felix.java:1986) ~[?:?]
at
org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998) ~[?:?]
at
org.apache.karaf.bundle.command.Start.executeOnBundle(Start.java:38) ~[?:?]
at
org.apache.karaf.bundle.command.BundlesCommand.doExecute(BundlesCommand.java:65)
~[?:?]
... 14 more
What exactly can I do here, to resolve this?
Thank you.
Regards,
Cooshal.
On Thu, Aug 1, 2019 at 6:40 AM Jean-Baptiste Onofré <[email protected]> wrote:
> Yes, it's what I meant: you have to "gather" the classloaders.
>
> An option to add all flyway bundles as require bundle/private package in
> your own bundle. Like this, all will be in your bundle classloader.
>
> Another option is to use fragment with your bundle as host (as a
> fragment is just resolved, only the host is started).
>
> Regards
> JB
>
> On 01/08/2019 06:36, Kushal Gautam wrote:
> > Hi JB:
> >
> > Thank you for your reply.
> >
> > I tried the options I could.
> >
> > For example, some suggested that this problem was resolved by using
> > Fragment-Host in maven-bundle-plugin as shown
> > here:
> https://github.com/FlavioF/fabric8-osgi-flyway-example/blob/master/fabric8-osgi-flyway/pom.xml
> >
> > But, doing that, my bundle never started because it gives me another
> > error saying: " ... cannot start the fragment host .... "
> >
> > I am totally clueless.
> >
> > Regards,
> > Cooshal.
> >
> > On Thu, Aug 1, 2019 at 6:23 AM Jean-Baptiste Onofré <[email protected]
> > <mailto:[email protected]>> wrote:
> >
> > 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
> > [email protected] <mailto:[email protected]>
> > http://blog.nanthrax.net
> > Talend - http://www.talend.com
> >
>
> --
> Jean-Baptiste Onofré
> [email protected]
> http://blog.nanthrax.net
> Talend - http://www.talend.com
>
