[rules-users] IllegalStateException happens when ResourceChangeScanner working on Version 5.3.0.CR1

[Jiri Svitak]

I have already reported this issue:
https://bugzilla.redhat.com/show_bug.cgi?id=733008

On 10/04/2011 02:56 PM, Oliver Liu wrote:
> Hi Guys,
>
> I want to upgrade drools from 5.1.1 to 5.3.0 CR1, but i found
> ResourceChangeScanner could't work.
>
> In version 5.1.1, i wrote this code to get a KnowledgeAgent
>
> 		KnowledgeAgent kagent =
> KnowledgeAgentFactory.newKnowledgeAgent("ReleaseAgent");
> 		kagent.addEventListener(new ReloadingRuleEventListener(this));
> 	
> kagent.applyChangeSet(ResourceFactory.newClassPathResource("changeset-url.xml"));
>
> changeset-url.xml content is like:
> <change-set xmlns='http://drools.org/drools-5.0/change-set'
>      xmlns:xs='http://www.w3.org/2001/XMLSchema-instance'
>      xs:schemaLocation='http://drools.org/drools-5.0/change-set
>
> http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-api/src/main/resources/change-set-1.0.0.xsd'
>     <add>
>        <resource
>
> source='http://hostname:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/PackageName1/snapshot_release'
>        type='PKG' basicAuthentication="enabled" username="user1"
> password="123456" />
>
>        <resource
>
> source='http://hostname:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/PackageName2/snapshot_release'
>        type='PKG' basicAuthentication="enabled" username="user1"
> password="123456" />
>
>        <resource
>
> source='http://hostname:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/PackageName3/snapshot_release'
>        type='PKG' basicAuthentication="enabled" username="user1"
> password="123456" />
>     </add>
> </change-set>
>
> then wrote this code to scan if there is a new version snapshot on guvnor
> 		ResourceChangeScannerConfiguration sconf = ResourceFactory
> 				.getResourceChangeScannerService()
> 				.newResourceChangeScannerConfiguration();
> 		sconf.setProperty("drools.resource.scanner.interval","60");
>
> 		ResourceFactory.getResourceChangeScannerService().configure(sconf);
> 		ResourceFactory.getResourceChangeScannerService().start();
> 		ResourceFactory.getResourceChangeNotifierService().start();
>
> It works very well, each time when ResourceChangeScanner finding there is
> new snapshot, it can reload the rules from guvnor properly.
>
> But when i updated to 5.3.0 CR1, ran this code, error happens:
> Exception in thread "Thread-2" java.lang.IllegalStateException: reader does
> have
>   a modified date
>          at
> org.drools.io.impl.ReaderResource.getLastModified(ReaderResource.java
> :64)
>          at
> org.drools.io.impl.ResourceChangeScannerImpl.scan(ResourceChangeScann
> erImpl.java:169)
>          at
> org.drools.io.impl.ResourceChangeScannerImpl$ProcessChangeSet.run(Res
> ourceChangeScannerImpl.java:326)
>          at java.lang.Thread.run(Thread.java:619)
>
> It seems in new version, UrlResource was parsed to ReaderResource(i rememer
> in 5.1.1, each resource in changeset-url.xml was parsed to UrlResource).
>
>
> Can you give a help?
> Thanks a lot
>
>
> --
> View this message in context: http://drools.46999.n3.nabble.com/IllegalStateException-happens-when-ResourceChangeScanner-working-on-Version-5-3-0-CR1-tp3393027p3393027.html
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