Drools camel multiple ksession not firing - drools

Question

I am using drools 5.6. In camel-server.xml I have my route defined as:
<route>
<from uri="cxfrs://bean://rsServer"/>
<policy ref="droolsPolicy">
<unmarshal ref="xstream-json" />
<to uri="drools:node1" />
<marshal ref="xstream-json" />
</policy>
</route>
I am not defining a ksession. Then in my knowledge-service.xml I have 2 sessions defined (by user) that point to different DRL files. These import the same common DRL file
<drools:kbase id="kbase1" node="node1">
<drools:resources>
<drools:resource ref="ruletemplate" />
<drools:resource type="DRL" source="classpath:7.drl"/>
</drools:resources>
</drools:kbase>
<drools:ksession id="ksession-7" type="stateless" kbase="kbase1" node="node1"/>
<drools:kbase id="kbase2" node="node1">
<drools:resources>
<drools:resource ref="ruletemplate" />
<drools:resource type="DRL" source="classpath:12.drl"/>
</drools:resources>
</drools:kbase>
<drools:ksession id="ksession-12" type="stateless" kbase="kbase2" node="node1"/>
The idea is the ksession will be defined in the JSON request passed in:
{"batch-execution": { "lookup":"ksession-12", "commands": [ { "insert": { "out-identifier": ...
The server starts up and changing the lookup between 7 and 12 works. HOWEVER whatever lookup I run first is the only rule that actually fires. So if I start the server and run ksession-7 it will run successfully, then change to ksession-12 nothing happens (does not hit debugging in 12.drl)
If I then restart the server and run 12 first it will run successfully, then change to ksession-7 and nothing happens
I am confused by this and believe I am missing something. My goal is to have a common rule template with specific rules for each user. Can anyone help guide me why this is not being directed correctly (or not processing)
EDIT: Adding example
t1.drl:
package org.company.t1.rules
import org.test.*
rule "check patients age" dialect "mvel"
when
$p : Patient( age >= 10)
then
System.out.println("t1 - age greater then 10")
$ca = new Message("age greater then 10")
$p.alerts.add($ca)
end
t2.drl:
package org.company.t2.rules
import org.test.*
rule "check patients age" dialect "mvel"
when
$p : Patient( age >= 15)
then
System.out.println("t2 - age greater then 15")
$ca = new Message("age greater then 15")
$p.alerts.add($ca)
end
ruletemplate.drl:
package org.test
declare Message
text : String
end
declare Patient
id:String
age : Integer
alerts : java.util.ArrayList
end
rule "setup rule for alerts" dialect "mvel" salience 100
when
$p : Patient()
then
System.out.println("initialize array")
$p.alerts = new java.util.ArrayList();
end
knowledge-server.xml:
<drools:resource id="ruletemplate" type="DRL" source="classpath:ruletemplate.drl" />
<drools:kbase id="kbase5" node="node1">
<drools:resources>
<drools:resource ref="ruletemplate" />
<drools:resource type="DRL" source="classpath:t1.drl"/>
</drools:resources>
</drools:kbase>
<drools:kbase id="kbase6" node="node1">
<drools:resources>
<drools:resource ref="ruletemplate" />
<drools:resource type="DRL" source="classpath:t2.drl"/>
</drools:resources>
</drools:kbase>
<drools:ksession id="ksession5" type="stateless" kbase="kbase5" node="node1"/>
<drools:ksession id="ksession6" type="stateless" kbase="kbase6" node="node1"/>
First request that works:
{"batch-execution": { "lookup":"ksession5", "commands": [ { "insert": { "out-identifier": "patient", "object": { "org.test.Patient":[{"age":16}]}}},{"fire-all-rules": ""}]}}
{"execution-results":{"results":{"result":{"identifier":"patient","value":{"org.test.Patient":{"age":16,"alerts":{"org.test.Message":{"text":"age greater then 10"}}}}},"fact-handle":{"identifier":"patient","external-form":"0:2:537549803:537549803:2:DEFAULT"}}}}
Request 2: (doesnt work unless run first after server restart:
{"batch-execution": { "lookup":"ksession6", "commands": [ { "insert": { "out-identifier": "patient", "object": { "org.test.Patient":[{"age":16}]}}},{"fire-all-rules": ""}]}}
{"execution-results":{"results":{"result":{"identifier":"patient","value":{"org.test.Patient":{"age":16}}},"fact-handle":{"identifier":"patient","external-form":"0:2:552327108:552327108:2:DEFAULT"}}}}
Tailing catalina.out shows the debugger output for t1 as it was run first, but nothing on t2

Answer 1

What are you inserting? what kind of rules do you have in there?
Could be that the first run everything works well and the second is crashing in the back?