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[JBRULES-3677] avoid to add the same AgendaGroup twice on the agenda …
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@mariofusco
mariofusco committed Nov 2, 2012
1 parent a5d961f commit 0f1ed71
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Showing 5 changed files with 130 additions and 24 deletions.
97 changes: 97 additions & 0 deletions drools-compiler/src/test/java/org/drools/integrationtests/MiscTest2.java
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Expand Up @@ -21,16 +21,29 @@
import org.drools.KnowledgeBase;
import org.drools.KnowledgeBaseFactory;
import org.drools.Person;
import org.drools.WorkingMemory;
import org.drools.builder.KnowledgeBuilder;
import org.drools.builder.KnowledgeBuilderFactory;
import org.drools.builder.ResourceType;
import org.drools.core.util.FileManager;
import org.drools.definition.KnowledgePackage;
import org.drools.event.ActivationCancelledEvent;
import org.drools.event.ActivationCreatedEvent;
import org.drools.event.AfterActivationFiredEvent;
import org.drools.event.rule.AgendaEventListener;
import org.drools.event.AgendaGroupPoppedEvent;
import org.drools.event.AgendaGroupPushedEvent;
import org.drools.event.BeforeActivationFiredEvent;
import org.drools.event.RuleFlowGroupActivatedEvent;
import org.drools.event.RuleFlowGroupDeactivatedEvent;
import org.drools.event.knowledgebase.DefaultKnowledgeBaseEventListener;
import org.drools.event.knowledgebase.KnowledgeBaseEventListener;
import org.drools.impl.KnowledgeBaseImpl;
import org.drools.io.ResourceFactory;
import org.drools.marshalling.impl.ProtobufMessages;
import org.drools.runtime.StatefulKnowledgeSession;
import org.drools.runtime.rule.FactHandle;
import org.drools.runtime.rule.impl.AgendaImpl;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
Expand All @@ -40,7 +53,9 @@
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

/**
* Run all the tests with the ReteOO engine implementation
Expand Down Expand Up @@ -244,4 +259,86 @@ public void testKnowledgeBaseEventSupportLeak() throws Exception {
kbase.removeEventListener(listener);
assertEquals(0, ((KnowledgeBaseImpl) kbase).getRuleBase().getRuleBaseEventListeners().size());
}

@Test
public void testReuseAgendaAfterException() throws Exception {
// JBRULES-3677

String str = "import org.drools.Person;\n" +
"global java.util.List results;" +
"rule R1\n" +
"ruleflow-group \"test\"\n" +
"when\n" +
" Person( $age : age ) \n" +
"then\n" +
" if ($age > 40) throw new RuntimeException(\"Too old\");\n" +
" results.add(\"OK\");" +
"end";

KnowledgeBase kbase = loadKnowledgeBaseFromString(str);
final StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();

List<String> res = new ArrayList<String>();
ksession.setGlobal( "results", res );

AgendaEventListener agendaEventListener = new AgendaEventListener() {
public void activationCreated(org.drools.event.rule.ActivationCreatedEvent event) {
}

public void activationCancelled(org.drools.event.rule.ActivationCancelledEvent event) {
}

public void beforeActivationFired(org.drools.event.rule.BeforeActivationFiredEvent event) {
}

public void afterActivationFired(org.drools.event.rule.AfterActivationFiredEvent event) {
}

public void agendaGroupPopped(org.drools.event.rule.AgendaGroupPoppedEvent event) {
}

public void agendaGroupPushed(org.drools.event.rule.AgendaGroupPushedEvent event) {
}

public void beforeRuleFlowGroupActivated(org.drools.event.rule.RuleFlowGroupActivatedEvent event) {
}

public void afterRuleFlowGroupActivated(org.drools.event.rule.RuleFlowGroupActivatedEvent event) {
ksession.fireAllRules();
}

public void beforeRuleFlowGroupDeactivated(org.drools.event.rule.RuleFlowGroupDeactivatedEvent event) {
}

public void afterRuleFlowGroupDeactivated(org.drools.event.rule.RuleFlowGroupDeactivatedEvent event) {
}
};

ksession.addEventListener(agendaEventListener);

FactHandle fact1 = ksession.insert(new Person("Mario", 38));
((AgendaImpl)ksession.getAgenda()).activateRuleFlowGroup("test");

assertEquals(1, res.size());
res.clear();

ksession.retract(fact1);

FactHandle fact2 = ksession.insert(new Person("Mario", 48));
try {
((AgendaImpl)ksession.getAgenda()).activateRuleFlowGroup("test");
fail("should throw an Exception");
} catch (Exception e) { }
ksession.retract(fact2);

assertEquals(0, res.size());

// try to reuse the ksession after the Exception
FactHandle fact3 = ksession.insert(new Person("Mario", 38));
((AgendaImpl)ksession.getAgenda()).activateRuleFlowGroup("test");
assertEquals(1, res.size());
ksession.retract(fact3);

ksession.dispose();
}
}
2 changes: 1 addition & 1 deletion drools-compiler/src/test/java/org/drools/integrationtests/TimerAndCalendarTest.java
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Expand Up @@ -1379,7 +1379,7 @@ public void testExprTimeRescheduled() throws Exception {
}


@Test
@Test @Ignore // TODO: fails randomly FIXME
public void testHaltAfterSomeTimeThenRestart() throws Exception {
String drl = "package org.drools.test;" +
"global java.util.List list; \n" +
Expand Down
51 changes: 30 additions & 21 deletions drools-core/src/main/java/org/drools/common/DefaultAgenda.java
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Expand Up @@ -871,6 +871,13 @@ public LinkedList<AgendaGroup> getStackList() {
return this.focusStack;
}

public void addAgendaGroupOnStack(AgendaGroup agendaGroup) {
if (!focusStack.isEmpty() && focusStack.getLast().equals(agendaGroup)) {
focusStack.removeLast();
}
focusStack.add(agendaGroup);
}

public Map<String, RuleFlowGroup> getRuleFlowGroupsMap() {
return this.ruleFlowGroups;
}
Expand Down Expand Up @@ -1205,28 +1212,30 @@ public boolean fireNextItem(final AgendaFilter filter) throws ConsequenceExcepti
// cleared during execution of this activation
ruleFlowGroup.removeActivation( item );
}
if ( filter == null || filter.accept( item ) ) {
// fire it
fireActivation( item );
result = true;
} else {
// otherwise cancel it and try the next

//necessary to perfom queued actions like signal to a next node in a ruleflow/jbpm process
this.workingMemory.executeQueuedActions();

final EventSupport eventsupport = (EventSupport) this.workingMemory;
eventsupport.getAgendaEventSupport().fireActivationCancelled( item,
this.workingMemory,
ActivationCancelledCause.FILTER );
tryagain = true;
}
// The routine bellow cleans up ruleflow activations
if ( ruleFlowGroup != null ) {
ruleFlowGroup.deactivateIfEmpty();
this.workingMemory.executeQueuedActions();
try {
if ( filter == null || filter.accept( item ) ) {
// fire it
fireActivation( item );
result = true;
} else {
// otherwise cancel it and try the next

//necessary to perfom queued actions like signal to a next node in a ruleflow/jbpm process
this.workingMemory.executeQueuedActions();

final EventSupport eventsupport = (EventSupport) this.workingMemory;
eventsupport.getAgendaEventSupport().fireActivationCancelled( item,
this.workingMemory,
ActivationCancelledCause.FILTER );
tryagain = true;
}
} finally {
// The routine below cleans up ruleflow activations
if ( ruleFlowGroup != null ) {
ruleFlowGroup.deactivateIfEmpty();
this.workingMemory.executeQueuedActions();
}
}

}
}
} while ( tryagain );
Expand Down
2 changes: 1 addition & 1 deletion drools-core/src/main/java/org/drools/marshalling/impl/InputMarshaller.java
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Expand Up @@ -362,7 +362,7 @@ public static void readAgenda( MarshallerReaderContext context,

while (stream.readShort() == PersisterEnums.AGENDA_GROUP) {
String agendaGroupName = stream.readUTF();
agenda.getStackList().add( agenda.getAgendaGroup( agendaGroupName ) );
agenda.addAgendaGroupOnStack( agenda.getAgendaGroup( agendaGroupName ) );
}

while (stream.readShort() == PersisterEnums.RULE_FLOW_GROUP) {
Expand Down
2 changes: 1 addition & 1 deletion drools-core/src/main/java/org/drools/marshalling/impl/ProtobufInputMarshaller.java
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Expand Up @@ -398,7 +398,7 @@ public static void readAgenda(MarshallerReaderContext context,
}

for ( String _groupName : _agenda.getFocusStack().getGroupNameList() ) {
agenda.getStackList().add( agenda.getAgendaGroup( _groupName ) );
agenda.addAgendaGroupOnStack( agenda.getAgendaGroup( _groupName ) );
}

for ( ProtobufMessages.Agenda.RuleFlowGroup _ruleFlowGroup : _agenda.getRuleFlowGroupList() ) {
Expand Down

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