[rules-users] KnowledgeAgent and OSGI
Mark Proctor
mproctor at codehaus.org
Wed Aug 4 06:35:27 EDT 2010
On 04/08/2010 11:06, David Conde wrote:
> Thanks Mark,
>
> Cheers for the info.
>
> I've seen the OSGi bundle zip (and the boot bundle list [1]) but it
> seemed to have quite a large amount of dependencies for just
> drools-core and drools-compiler. Do you know if all these bundles are
> required for this subset? If not would you happen to have the list of
> what is?
>
> If you don't have this handy I'll send it on so that you have it once
> I have figured it out :)
The spring testing framework makes you list all the dependencies
manually, which it resolves against that osgi-bundles.zip contents. This
is the file:
http://fisheye.jboss.org/browse/JBossRules/trunk/osgi-bundles/org.drools.osgi.test/src/test/resources/boot-bundles.properties?r=HEAD
It does contain a lot more than normal, mostly I just kept adding stuff
intil OSGi would resolve and the unit tests pass. It may be possible not
to include things like jaxb (especially if you are on jdk6) and some of
the other peripheral jars. We have used the spring repository and
sometimes the transitivie dependencies are not left optional which means
they are dragged in, and even if we don't us them OSGi will not resolve
without them there. Maybe check out trunk and help us work on this and
improve it?
The problem with OSGi is so few dependencies are are published as OSGi
bundles, which means we have to rely on things like the spring osgi
repository. That automates the building of the bundles and doesn't
always handle optional dependencies that well.
Mark
>
> [1]
> http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/osgi-bundles/org.drools.osgi.test/src/test/resources/boot-bundles.properties
>
> - Dave
>
> 2010/8/4 Mark Proctor <mproctor at codehaus.org
> <mailto:mproctor at codehaus.org>>
>
> The set of OSGi bundles dependencies can be used here:
> http://www.jboss.org/drools/downloads.html
>
> We test against spring:
> http://fisheye.jboss.org/browse/JBossRules/trunk/osgi-bundles/org.drools.osgi.test/src/test/java/org/drools/osgi/integrationtests/SimpleOsgiTest.java
>
> This is our project that builds osgi-bundles and does some testing
> of Drools against OSGi:
> http://fisheye.jboss.org/browse/JBossRules/trunk/osgi-bundles/
>
> I have done some minimal OSGi docs. OSGI is stil la work in
> progress for us and we have only osgi-ified some aspects Drools,
> although we have done extensive work on the classloaders to make
> it fit better.
> https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/docs/drools-integration/html/ch05.html
>
> Please do test what we have, maybe help us OSGi-ify other aspects
> of drools.
>
> Mark
>
> On 04/08/2010 10:25, David Conde wrote:
>> Hi,
>>
>> I'm trying to get drools-core and drools-compiler 5.1 running on
>> spring dm-server. Does anyone have the minimal list of OSGi
>> bundles as maven dependencies handy?
>>
>> Thanks,
>> Dave
>>
>> On 25 June 2010 13:59, mmarmol <marcelo.marmol at gmail.com
>> <mailto:marcelo.marmol at gmail.com>> wrote:
>>
>>
>> Hi, I have managed to install Drools-core and Drools-compiler
>> in my Equinox
>> osgi environment, I can compile rules and execute them just
>> fine, I was just
>> wandering how to configure a KnowledgeAgent using
>> KnowledgeBuilderFactoryService and
>> KnowledgeBaseFactoryService. I managed to
>> configure one but i am not able to reload rules when they
>> change at runtime.
>> I have started ResourceChangeScannerService and
>> ResourceChangeNotifierService, changeset related to the rules
>> file gets read
>> but no change gets implemented. An idea?
>>
>>
>> Here is the code:
>>
>>
>> ResourceFactory.getResourceChangeScannerService().start();
>>
>> ResourceFactory.getResourceChangeNotifierService().start();
>>
>> ServiceReference serviceRef = bc
>>
>> .getServiceReference(ServiceRegistry.class.getName());
>> ServiceRegistry registry = (ServiceRegistry)
>> bc.getService(serviceRef);
>>
>> KnowledgeBuilderFactoryService
>> knowledgeBuilderFactoryService = registry
>>
>> .get(KnowledgeBuilderFactoryService.class);
>>
>> KnowledgeBaseFactoryService
>> knowledgeBaseFactoryService = registry
>>
>> .get(KnowledgeBaseFactoryService.class);
>> ResourceFactoryService resourceFactoryService
>> = registry
>>
>> .get(ResourceFactoryService.class);
>>
>> KnowledgeBuilderConfiguration kbConf =
>> knowledgeBuilderFactoryService
>>
>> .newKnowledgeBuilderConfiguration(null, getClass()
>>
>> .getClassLoader());
>>
>> KnowledgeBuilder kbuilder =
>> knowledgeBuilderFactoryService
>> .newKnowledgeBuilder(kbConf);
>> ResourceFactoryService resource =
>> resourceFactoryService;
>>
>> kbuilder.add(resource.newFileSystemResource(filePath),
>> ResourceType.CHANGE_SET);
>>
>> if (kbuilder.hasErrors()) {
>> System.out.println(kbuilder.getErrors());
>> throw new
>> RuntimeException(kbuilder.getErrors().toString());
>> }
>>
>> KnowledgeBaseConfiguration kbaseConf =
>> knowledgeBaseFactoryService
>>
>> .newKnowledgeBaseConfiguration(null, getClass()
>>
>> .getClassLoader());
>>
>> KnowledgeBase kbase = knowledgeBaseFactoryService
>> .newKnowledgeBase(kbaseConf);
>>
>> kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
>>
>> KnowledgeAgentConfiguration aconf =
>>
>> KnowledgeAgentFactory.newKnowledgeAgentConfiguration();
>>
>> aconf.setProperty("drools.agent.scanDirectories", "true");
>>
>> aconf.setProperty("drools.agent.scanResources", "true");
>> aconf.setProperty("drools.agent.newInstance",
>> "false");
>>
>> kagent =
>> KnowledgeAgentFactory.newKnowledgeAgent( "CoreDroolsAgent",kbase,
>> aconf);
>>
>> kagent.applyChangeSet(resource.newFileSystemResource(filePath));
>>
>> Thanks in advance!
>>
>> Cheers
>> --
>> View this message in context:
>> http://drools-java-rules-engine.46999.n3.nabble.com/KnowledgeAgent-and-OSGI-tp921989p921989.html
>> Sent from the Drools - User mailing list archive at Nabble.com.
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