Re: Ehcache and JGroups connectiivity

>
> So I’ve finally returned and thanks to the excellent series of
> articles by Ekke at
> http://ekkescorner.wordpress.com/blog-series/osgi-apps/ I was able to
> capture logging information from JGroups and Ehcache.
>
> On a high level I’m attempting to create a distributed cache using
> Ehcache (com.springsource.net.sf.ehcache-1.5.0.jar) which in turn uses
> JGroups (com.springsource.org.jgroups-2.5.1.jar) to replicate the data
> across machines.
>
> I currently have 2 machines running Felix 1.8.0 with the following
> bundles:
>
>    * · com.springsource.antlr-2.7.6.jar
>    * · com.springsource.ch.qos.logback.classic-0.9.15.jar
>    * · com.springsource.ch.qos.logback.core-0.9.15.jar
>    * · com.springsource.edu.emory.mathcs.backport-3.0.0.jar
>    * · com.springsource.javassist-3.3.0.ga.jar
>    * · com.springsource.javax.mail-1.4.1.jar
>    * · com.springsource.javax.servlet-2.5.0.jar
>    * · com.springsource.javax.xml.stream-1.0.1.jar
>    * · com.springsource.net.sf.cglib-2.1.3.jar
>    * · com.springsource.net.sf.ehcache-1.5.0.jar
>    * · com.springsource.net.sf.jsr107cache-1.0.0.jar
>    * · com.springsource.org.apache.commons.collections-3.2.0.ja
>    * · com.springsource.org.dom4j-1.6.1.jar
>    * · com.springsource.org.hibernate-3.3.1.GA-1.jar
>    * · com.springsource.org.jgroups-2.5.1.jar
>    * · com.springsource.slf4j.api-1.5.6.jar
>    * · com.springsource.slf4j.bridge-1.5.6.jar
>    * · com.springsource.slf4j.org.apache.log4j-1.5.6.jar
>    * · contextmanager-1.0-SNAPSHOT.jar
>    * · jcl-over-slf4j-1.5.6.jar
>    * · jgroupsFrag-1.0-SNAPSHOT.jar
>    * · JULToSLF4JBridgeFrag-1.0-SNAPSHOT.jar
>    * · LogbackFrag-1.0-SNAPSHOT.jar
>
> When I take these same set of jars and run them in a standard JVM it
> works fine. However when run them inside of Felix (or for that matter
> Equinox or Knoplerfish) I get the following error:
>
> *exception=java.lang.IllegalArgumentException:
> java.lang.ClassNotFoundException:
> net.sf.ehcache.distribution.jgroups.JGroupSerializable*
>
> So it seems that the Ehache bundle is not able to find the
> net.sf.ehcache.distribution.jgroups.JGroupSerializable which is in the
> JGroups bundle.
>
> So I figured I would create a fragment (jgroupsFrag-1.0-SNAPSHOT.jar)
> that would provide this class to the Ehcache bundle. The following is
> the manifest from this fragment.
>
> Manifest-Version: 1.0
> Private-Package: .
> Bundle-ClassPath: .
> Built-By: wdrew
> Tool: Bnd-0.0.311
> Bundle-Name: jgroupsFrag
> Created-By: Apache Maven Bundle Plugin
> Fragment-Host: com.springsource.org.jgroups
> Bundle-Version: 1.0.0.SNAPSHOT
> Build-Jdk: 1.6.0_13
> Bnd-LastModified: 1246064720234
> Bundle-ManifestVersion: 2
> Bundle-SymbolicName: com.ss.mother.jgroupsFrag
>
> Apparently I’m doing something wrong here because when I
> deploy/install this fragment I still get the ClassNotFoundException
> above.
>
> Any ideas where I’m going wrong with this?
>
>
> William Drew wrote:
>> Karl,
>>
>> Thanks for the quick response. I was hoping that it was something
>> very simple so I didn't include detailed information. I'll get a more
>> reasonable set of diagnostics and get back asap.
>>
>> Karl Pauls wrote:
>>> Can you give us a little more information about what is going wrong
>>> (like error messages etc.)? Furthermore, are you using the latest
>>> version of felix or are you running on trunk?
>>>
>>> regards,
>>>
>>> Karl
>>>
>>> On Mon, Jun 1, 2009 at 10:22 PM, William Drew <solset@...>
>>> wrote:
>>>> I am attempting to use Ehcache within Felix to provide a
>>>> distributed cache
>>>> capability and using JGroups for the replication of the data
>>>> between the
>>>> JVMs. To ensure that my ehcache configuration was correct I ran the
>>>> code
>>>> outside of OSGi. The data is being successfully added to the cache and
>>>> replicated across two JVMs running on separate machines.
>>>>
>>>> The problem is when I run this same code inside a bundle within
>>>> Felix. The
>>>> bundle is started successfully and it all runs fine except for the
>>>> fact that
>>>> I can not seem to get the same connection between the JVMs as I did
>>>> when I
>>>> ran them outside of Felix. JGroups does not seem to be able to
>>>> connect when
>>>> running inside the OSGi container.
>>>>
>>>> Is there some configuration settings within Felix that I need to
>>>> set in
>>>> order to enable network connections to be established? I'm sure
>>>> there's
>>>> something simple that I'm missing here.
>>>>
>>>>
>>>>
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>>>
>>>
>>>
>>
>>
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