FUSE camel + KIE Execution Server integration POC - jboss

Question

Recently, I am starting to look at Fuse Camel, Drools WB and Kie Execution Server Integration for a new project and I am having the following problem.
I am using Fuse 6.2, Drool 6.2.Final for WB and Kie Server.
This is what I have done:
create the Person Drink drool rule from the Fuse Example in Drools-WB and deployed in on the Kie Execution Server using my own Containers : myCheese.
in Fuse Camel, instead of calling the internal Kie-Camel Server, I am using a bean in which setup the header for Comel-jetty to fire the rules :
public void populateRestHeader(Exchange exchange) {
// hard code the message for time being because BatchExecutionHelperd doesn't work. please see below.
String myMessage = "<batch-execution lookup="ksession1"> "
+ "<insert out-identifier="person" > <org.drools.camel.example.Person> john "
+ "51 </org.drools.camel.example.Person> "
+ " ";
// setup the login token
exchange.getIn().setHeader("Authorization", basicToken);
// POST so I can send XML. GET works fine !
exchange.getIn().setHeader(Exchange.HTTP_METHOD, "POST");
// the content
exchange.getIn().setHeader(Exchange.ACCEPT_CONTENT_TYPE, "application/xml");
exchange.getIn().setBody(myMessage);
}
POST the commands to remote Kie-Server using jetty :
jetty:http://my-server/services/rest/server/containers/myCheese
On the Kie-Server log, I am getting :
15:19:33,140 WARN [org.jboss.resteasy.core.ExceptionHandler] (default task-114) failed to execute: javax.ws.rs.NotSupportedException: Cannot consume content type
at org.jboss.resteasy.core.registry.SegmentNode.match(SegmentNode.java:380) [resteasy-jaxrs-3.0.10.Final.jar:]
at org.jboss.resteasy.core.registry.SegmentNode.match(SegmentNode.java:114) [resteasy-jaxrs-3.0.10.Final.jar:]
Either the "Content-Type" wasn't setup correctly or the body wasn't sent ?
I tried to perform a GET using the same method and this works out nicely !
Received :
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><response type="SUCCESS" msg="Info for container myCheese"><kie-container container-id="myCheese" status="STARTED"><release-id><artifact-id>mycheese</artifact-id><group-id>com.markit</group-id><version>1.0</version></release-id><resolved-release-id><artifact-id>mycheese</artifact-id><group-id>com.markit</group-id><version>1.0</version></resolved-release-id><scanner status="DISPOSED"/></kie-container></response>
Using SoapUI to execute the command without any problem.
<response type="SUCCESS" msg="Container myCheese successfully called.">
<results><![CDATA[<execution-results>
<result identifier="person">
<org.drools.camel.example.Person>
<name>john</name>
<age>51</age>
<canDrink>true</canDrink>
<alive>false</alive>
<sex></sex>
<happy>false</happy>
</org.drools.camel.example.Person>
</result>
<fact-handle identifier="person" external-form="0:1:866416565:866416565:1:DEFAULT:NON_TRAIT"/>
</execution-results>]]></results>
</response>
Questions :
a) Any ideas why the error ? Is it correct to set the Exchange.Body as the DATA for the POST ?
b) Instead of using Came-Jetty to POST the commands to Kie-Server, as Kie-Server declare it as REST, can I use CXFRS to do this ? Also, I believes Kie-Server also supports SOAP, but what is its WSDL ? Another other alternatives ?
c) For the BatchExecutionCommands, I was planning to use the following :
public String createCommand() {
BatchExecutionCommandImpl command = new BatchExecutionCommandImpl();
final List<GenericCommand<?>> commands = command.getCommands();
Person person = createTestPerson();
commands.add(new InsertObjectCommand(person, "myPerson"));
commands.add(new FireAllRulesCommand());
command.setLookup("ksession1");
String myXMLMessage = BatchExecutionHelper.newXStreamMarshaller().toXML(command);
return myXMLMessage;
}
But I am getting the Exception in the Fuse log as :
Caused by: java.lang.ClassNotFoundException: org.drools.core.runtime.help.impl.BatchExecutionHelperProviderImpl not found by org.kie.internalapi [281]
at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1556)
at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:77)
at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1993)
Seems like Kie-Internal Package couldn't access the Drools-Core bundle ?

Answer 1

Arr.. got half of the answer. I needs to set the
Exchange.ContentType = "application/xml" !
now works nicely between the Fuse server and remote Kie-server. However, I am still having the problem with the BatchExecutionHelper Exception.