[rules-users] KnowledgeAgent to update knowledge base built with Guvnor pkg

[riri]

Ok so I've added the listeners and I have run 2 scenarios:

1. I do not recreate the KA before I re-run a session, and all the info that
I get even after having deleted a rule from the package is :

// at the beginning
[2013-05-02 23:23:32,031:info] ResourceChangeNotification scanner has
started
[2013-05-02 23:23:32,032:debug] ResourceChangeScanner attempt to scan 2
resources
[2013-05-02 23:23:32,033:debug] ResourceChangeScanner thread is waiting for
60 seconds.
[2013-05-02 23:23:32,034:info] ResourceChangeNotification has started
listening for ChangeSet publications
[2013-05-02 23:23:32,034:debug] ResourceChangeNotification thread is waiting
for queue update
[2013-05-02 23:23:32,232:info] ResourceChangeScanner reconfigured with
interval=20
[2013-05-02 23:23:32,232:info] ResourceChangeScanner reconfigured with
interval=20
[2013-05-02 23:23:32,232:info] ResourceChangeNotification scanner has
stopped
[2013-05-02 23:23:32,233:info] ResourceChangeNotification scanner has
started

// after starting the services
[2013-05-02 23:23:32,233:debug] ResourceChangeScanner attempt to scan 2
resources
[2013-05-02 23:23:32,234:debug] ResourceChangeScanner thread is waiting for
20 seconds.

2. I re-create the KA before I run a session, and dispose of the previous
KA, and this is what I get without even making any changes to the rules (the
same messages stating that the services have started are present but not
included):

// after disposing of agent
[2013-05-02 23:23:50,466:debug] KnowledgeAgent unsubscribing from
resource=[ReaderResource resource=null encoding='null']
[2013-05-02 23:23:50,466:debug] ResourceChangeNotification unsubscribing
listener=org.drools.agent.impl.KnowledgeAgentImpl at 9a8636 to
resource=[ReaderResource resource=null encoding='null']
[2013-05-02 23:23:50,467:debug] ResourceChangeScanner unsubcribing
notifier=org.drools.io.impl.ResourceChangeNotifierImpl at e171b2 to
resource=[ReaderResource resource=null encoding='null']
[2013-05-02 23:23:50,467:debug] ResourceChangeScanner
resource=[ReaderResource resource=null encoding='null'] now has no
subscribers
[2013-05-02 23:23:50,467:debug] KnowledgeAgent unsubscribing from
resource=[ClassPathResource path='ruleFiles/BasicWithFacts.drl']
[2013-05-02 23:23:50,467:debug] ResourceChangeNotification unsubscribing
listener=org.drools.agent.impl.KnowledgeAgentImpl at 9a8636 to
resource=[ClassPathResource path='ruleFiles/BasicWithFacts.drl']
[2013-05-02 23:23:50,467:debug] ResourceChangeScanner unsubcribing
notifier=org.drools.io.impl.ResourceChangeNotifierImpl at e171b2 to
resource=[ClassPathResource path='ruleFiles/BasicWithFacts.drl']
[2013-05-02 23:23:50,467:debug] ResourceChangeScanner
resource=[ClassPathResource path='ruleFiles/BasicWithFacts.drl'] now has no
subscribers

// after re creating the agent
[2013-05-02 23:23:50,698:debug] KnowledgeAgent building resource map
[2013-05-02 23:23:50,699:debug] KnowledgeAgent no resource mapped for
type=TypeDeclaration{typeName='StateEvent', role=FACT, format=POJO,
kind=CLASS, nature=DECLARATION}
[2013-05-02 23:23:50,699:debug] KnowledgeAgent mapping
resource=[ClassPathResource path='ruleFiles/BasicWithFacts.drl'] to
KnowledgeDefinition=TypeDeclaration{typeName='StateEvent', role=FACT,
format=POJO, kind=CLASS, nature=DECLARATION}
[2013-05-02 23:23:50,699:debug] KnowledgeAgent notifier subscribing to
resource=[ClassPathResource path='ruleFiles/BasicWithFacts.drl']
[2013-05-02 23:23:50,699:debug] ResourceChangeNotification subscribing
listener=org.drools.agent.impl.KnowledgeAgentImpl at 1eaa99b to
resource=[ClassPathResource path='ruleFiles/BasicWithFacts.drl']
[2013-05-02 23:23:50,698:info] KnowledgeAgent has started listening for
ChangeSet notifications
[2013-05-02 23:23:50,699:debug] ResourceChangeScanner subcribing
notifier=org.drools.io.impl.ResourceChangeNotifierImpl at e171b2 to
resource=[ClassPathResource path='ruleFiles/BasicWithFacts.drl']
[2013-05-02 23:23:50,699:debug] KnowledgeAgent mapping
resource=[ClassPathResource path='ruleFiles/BasicWithFacts.drl'] to
KnowledgeDefinition=[Rule name=sensor has reading value, agendaGroup=MAIN,
salience=12, no-loop=true]
[2013-05-02 23:23:50,699:warning] KnowledgeAgent: impossible to add a map
for a null resource! skiping.
[2013-05-02 23:23:50,699:debug] KnowledgeAgent mapping
resource=[ReaderResource resource=null encoding='null'] to
KnowledgeDefinition=[Rule name=bla, agendaGroup=MAIN, salience=12,
no-loop=true]
[2013-05-02 23:23:50,699:debug] KnowledgeAgent notifier subscribing to
resource=[ReaderResource resource=null encoding='null']
[2013-05-02 23:23:50,699:debug] ResourceChangeNotification subscribing
listener=org.drools.agent.impl.KnowledgeAgentImpl at 1eaa99b to
resource=[ReaderResource resource=null encoding='null']
[2013-05-02 23:23:50,699:debug] ResourceChangeScanner subcribing
notifier=org.drools.io.impl.ResourceChangeNotifierImpl at e171b2 to
resource=[ReaderResource resource=null encoding='null']
[2013-05-02 23:23:50,699:warning] KnowledgeAgent: impossible to add a map
for a null resource! skiping.
[2013-05-02 23:23:50,699:debug] KnowledgeAgent no resource mapped for
type=TypeDeclaration{typeName='StateEvent', role=FACT, format=POJO,
kind=CLASS, nature=DECLARATION}
[2013-05-02 23:23:50,699:warning] KnowledgeAgent: impossible to add a map
for a null resource! skiping.
[2013-05-02 23:23:50,699:info] KnowledgeAgent created, with configuration:
monitorChangeSetEvents=true scanResources=true scanDirectories=true
newInstance=false
[2013-05-02 23:23:50,700:info] ResourceChangeNotification scanner has
started
[2013-05-02 23:23:50,700:debug] ResourceChangeScanner attempt to scan 2
resources
[2013-05-02 23:23:50,700:debug] ResourceChangeScanner thread is waiting for
20 seconds.

>From what I'm reading it seems that the Guvnor resource package is null and
so there is nothing to subscribe to. I do not understand what I might be
doing wrong in this case or how to fix this since the rules are actually
included in the knowledge base.

Thank you very much for any help!







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