It&#39;s not an obvious how to OSGI-fy something :)<div><br></div><div>I did some homework - now I have OSGi-ified versions of drools-spring and drools-camel.</div><div>Also I created own bundle and tried to import KnowledgeBaseFactoryService, ServiceRegistry and KnowledgeBaseFactoryService as described in <a href="http://docs.jboss.org/jbpm/v5.2/userguide/ch18.html#d0e4308">http://docs.jboss.org/jbpm/v5.2/userguide/ch18.html#d0e4308</a>.</div>
<div>All what I got - NullPointerException from karaf core (haven&#39;t gotten full staketrace yet. For some reason it is just:</div><div><div>15:11:34,484 | INFO  | l Console Thread | Console                          | ?                                   ? | 34 - org.apache.karaf.shell.console - 2.2.2.fuse-02-13 | Exception caught while executing command</div>
<div>java.lang.NullPointerException</div></div><div>)</div><div><br></div><div>So, I spent some time randomly adding and removing configuration params and I found - NPE occurs when I&#39;m trying to import</div><div>org.drools.KnowledgeBaseFactoryService.</div>
<div>I guess (i&#39;m not OSGI expert) it could be because org.drools package is exported in 2! bundles. It is in drools-core and knowledge-api bundles. And I guess, karaf container just can&#39;t link my bundle with both core and api, only first bundle which contains requested package (org.drools) wins.</div>
<div><br></div><div>Any ideas on how to make it work? </div><div>I actually have one - every bundle should export own package. For knowledge-api it should be org.drools.api, and org.drools.core for drools-core.</div><div>
<br></div><div>Here is full log of similar packages:</div><div><div>WARNING: multiple bundles are exporting package org.drools.command</div><div>- org.drools.core [218]</div><div>- org.drools.api [216]</div><div>- org.drools.internalapi [217]</div>
<div><br></div><div>WARNING: multiple bundles are exporting package org.drools.runtime.process</div><div>- org.drools.core [218]</div><div>- org.drools.api [216]</div><div><br></div><div>WARNING: multiple bundles are exporting package org.drools.time</div>
<div>- org.drools.core [218]</div><div>- org.drools.api [216]</div><div><br></div><div>WARNING: multiple bundles are exporting package org.apache.geronimo.transaction</div><div>- org.apache.aries.transaction.manager [123]</div>
<div>- org.apache.aries.transaction.manager [51]</div><div><br></div><div>WARNING: multiple bundles are exporting package org.drools</div><div>- org.drools.core [218]</div><div>- org.drools.api [216]</div><div><br></div><div>
WARNING: multiple bundles are exporting package org.apache.geronimo.transaction.manager</div><div>- org.apache.aries.transaction.manager [123]</div><div>- org.apache.aries.transaction.manager [51]</div><div><br></div><div>
WARNING: multiple bundles are exporting package org.drools.grid</div><div>- org.drools.core [218]</div><div>- org.drools.spring [220]</div><div><br></div><div>WARNING: multiple bundles are exporting package jline</div><div>
- org.apache.servicemix.bundles.jruby [210]</div><div>- org.apache.karaf.shell.console [34]</div><div><br></div><div>WARNING: multiple bundles are exporting package org.apache.geronimo.transaction.log</div><div>- org.apache.aries.transaction.manager [123]</div>
<div>- org.apache.aries.transaction.manager [51]</div><div><br></div><div>WARNING: multiple bundles are exporting package org.drools.management</div><div>- org.drools.core [218]</div><div>- org.drools.api [216]</div><div>
<br></div><div>WARNING: multiple bundles are exporting package org.drools.agent</div><div>- org.drools.core [218]</div><div>- org.drools.api [216]</div><div><br></div><div>WARNING: multiple bundles are exporting package org.drools.event</div>
<div>- org.drools.core [218]</div><div>- org.drools.api [216]</div><br><div class="gmail_quote">2012/2/3 Mark Proctor <span dir="ltr">&lt;<a href="mailto:mproctor@codehaus.org">mproctor@codehaus.org</a>&gt;</span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

  
    
  
  <div bgcolor="#FFFFFF" text="#000000">
    neither spring or camel have been OSGi-ified. only api, core,
    compiler, templates, decision-tables and flow have.<br>
    <br>
    If someone wants to OSGi-ify those and contribute back they are very
    welcome:<br>
    1) update the pom.xml to use the osgi bundle plugin, see other
    existing poms.<br>
<a href="https://github.com/droolsjbpm/drools/blob/master/drools-decisiontables/pom.xml" target="_blank">https://github.com/droolsjbpm/drools/blob/master/drools-decisiontables/pom.xml</a><br>
    2) create an Activator to register the module, again see Activator&#39;s
    for core, compiler etc.<br>
<a href="https://github.com/droolsjbpm/drools/blob/master/drools-decisiontables/src/main/java/org/drools/osgi/decisiontables/Activator.java" target="_blank">https://github.com/droolsjbpm/drools/blob/master/drools-decisiontables/src/main/java/org/drools/osgi/decisiontables/Activator.java</a><br>

    3) update the osgi bundle&#39;s pom with new dependencies, make sure to
    pull in the spring ones, unless the actual project provides osgi
    ready jars.<br>
<a href="https://github.com/droolsjbpm/droolsjbpm-build-distribution/tree/master/drools-osgi-bundles" target="_blank">https://github.com/droolsjbpm/droolsjbpm-build-distribution/tree/master/drools-osgi-bundles</a><br>
    4) Update the boot-bundles.properties so that Spring DM loads the
    OSGi dependencies<br>
<a href="https://github.com/droolsjbpm/droolsjbpm-build-distribution/blob/master/drools-osgi-bundles/org.drools.osgi.test/src/test/filtered-resources/boot-bundles.properties" target="_blank">https://github.com/droolsjbpm/droolsjbpm-build-distribution/blob/master/drools-osgi-bundles/org.drools.osgi.test/src/test/filtered-resources/boot-bundles.properties</a><br>

    5) write unit tests for spring and camel.<br>
    <br>
    Mark<br>
    On 03/02/2012 03:47, Alexander Filipchik wrote:
    <blockquote type="cite">Hello all!
      <div><br>
      </div>
      <div>Don&#39;t know if it is right list to ask, but I&#39;m trying to make
        drools + camel running on Fuse (ServiceMix container).</div>
      <div>I couldn&#39;t even install OSGI drools artifacts for 5.3.1
        version (because of weird dependency on drools.core Snapshot),</div>
      <div>but did it with v5.2.1. I used:</div>
      <p>mvel2/2.1.0,
        org.drools/drools-core/5.2.1.Final, org.drools/drools-compiler/5.2.1.Final,
        org.drools/<span>knowledge-api</span>/5.2.1.Final
        and org.drools/drools-camel/5.2.1.Final.</p>
      <p>
        All are installed and active. Part of log:</p>
      <p>[ 162] [Active     ] [            ] [       ] [  
        60] Drools :: Compiler (5.2.1.Final)</p>
      <p>[ 163] [Active     ] [            ] [       ] [  
        60] mvel2 (2.1.0.drools4)</p>
      <p>[ 164] [Active     ] [            ] [       ] [  
        60] Drools :: Core (5.2.1.Final)</p>
      <p>[ 165] [Active     ] [            ] [       ] [  
        60] Knowledge API (5.2.1.Final)</p>
      <p>[ 172] [Active     ] [            ] [       ] [  
        60] mvn:org.drools/drools-camel/5.2.1.Final</p>
      <p>Then I tried to add my own camel-drools router (I
        created OSGI bundle for it). It depends on:</p>
      <p>Import-Package:
org.apache.activemq,org.apache.activemq.camel.component,org.apache.activemq.pool,org.apache.camel;version=&quot;[2.8,3)&quot;,org.apache.camel.builder;version=&quot;[2.8,3)&quot;,org.apache.camel.component.jms;version=&quot;[2.8,3)&quot;,org.apache.camel.model;version=&quot;[2.8,3)&quot;,org.drools.camel.component,org.osgi.service.blueprint;version=&quot;[1.0.0,2.0.0)&quot;,org.springframework.transaction;version=&quot;[3,4)&quot;</p>

      <p>It tried to install it to a container but all I got
        - </p>
      <p>Error executing command: Unresolved constraint in
        bundle com.betfair.drools [170]: Unable to resolve 170.0:
        missing requirement [170.0] package;
        (package=org.drools.camel.component)</p>
      <div>I even tried to put drools-camel.jar
        with org.drools.camel.component in a lib folder and add package
        to org.osgi.framework.system.packages.extra, but got same
        result.</div>
      <div><br>
      </div>
      <div>Do you have any idea, blog posts, samples which could help
        me?</div>
      <div>I&#39;m completely stuck.</div>
      <div><br>
      </div>
      <div>Thanks,</div>
      <div>Alex</div>
      <br>
      <fieldset></fieldset>
      <br>
      <pre>_______________________________________________
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