I have an application that use Guvnor 5.4.0 final as the rules repository and a DroolsServer 5.4.0 final (with Spring Camel) to provide rule engine via a Rest Webservices, all of those apps Running in a JBossAS 7.1.

All of the service are working perfectly, except the resource-change-scanner that is configured in the knowledge-services.xml [1] as it's described in the documentation.

When Drools-Server are deployed the Change Scanner does not start (I'm monitoring the change scanner via Wireshark analyzing the communication between DroolServer and Guvnor), I've created an small JSP file [2] that invoke the ChangeScanner start method, when i run the JSP the Change Scanner start to work (i can see the http requests from Drools Server do Guvnor to see if the knowledge base had changed), but after Change Scanner started working the rules are not triggered anymore.

So without Change Scanner I've all of the knowledge service running properly, but the App is unable to detect rules changes, when I explicitly (via JSP) start the Change Scanner all of the knowledge service stopped working.

<beans xmlns="http://www.springframework.org/schema/beans"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns:drools="http://drools.org/schema/drools-spring"

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd

http://drools.org/schema/drools-spring http://drools.org/schema/drools-spring-1.3.0.xsd">

<drools:grid-node id="node1"/>

<drools:resource-change-scanner id="scanner" interval="10" />

<drools:kbase id="kbase1" node="node1" />

<drools:kagent id="kagent1" kbase="kbase1">

<drools:resources>

<drools:resource type="CHANGE_SET" source="classpath:ChangeSet.xml" />

</drools:resources>

</drools:kagent>

<drools:ksession id="ksession1" type="stateless" kbase="kbase1" node="node1"/>

</beans>

<%@ page language="java" contentType="text/html; charset=utf-8" %>

org.drools.io.ResourceChangeScannerConfiguration sconf = org.drools.io.ResourceFactory.getResourceChangeScannerService().newResourceChangeScannerConfiguration();

sconf.setProperty("drools.resource.scanner.interval", "5");

org.drools.io.ResourceFactory.getResourceChangeScannerService().configure(sconf);

org.drools.io.ResourceFactory.getResourceChangeScannerService().start();

org.drools.io.ResourceFactory.getResourceChangeNotifierService().start();

Antonio Anderson Souza

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