/*
* Copyright 2011 Red Hat Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.persistence.session;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession;
import org.drools.persistence.SingleSessionCommandService;
import org.drools.persistence.jpa.OptimisticLockRetryInterceptor;
import org.drools.persistence.util.PersistenceUtil;
import org.hibernate.StaleObjectStateException;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.kie.api.io.ResourceType;
import org.kie.api.runtime.Environment;
import org.kie.internal.KnowledgeBase;
import org.kie.internal.KnowledgeBaseFactory;
import org.kie.internal.builder.KnowledgeBuilder;
import org.kie.internal.builder.KnowledgeBuilderFactory;
import org.kie.internal.io.ResourceFactory;
import org.kie.internal.persistence.jpa.JPAKnowledgeService;
import org.kie.internal.runtime.StatefulKnowledgeSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.drools.persistence.util.PersistenceUtil.*;
import static org.junit.Assert.*;
public class JpaOptLockPersistentStatefulSessionTest {
private static Logger logger = LoggerFactory.getLogger(JpaOptLockPersistentStatefulSessionTest.class);
private HashMap<String, Object> context;
private Environment env;
public JpaOptLockPersistentStatefulSessionTest() {
}
@Before
public void setUp() throws Exception {
context = PersistenceUtil.setupWithPoolingDataSource(DROOLS_PERSISTENCE_UNIT_NAME);
env = createEnvironment(context);
}
@After
public void tearDown() throws Exception {
PersistenceUtil.cleanUp(context);
}
@Test
public void testOptimisticLockInterceptor() {
String str = "";
str += "package org.kie.test\n";
str += "global java.util.List list\n";
str += "rule rule1\n";
str += "when\n";
str += " Integer(intValue > 0)\n";
str += "then\n";
str += " list.add( 1 );\n";
str += "end\n";
str += "\n";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add( ResourceFactory.newByteArrayResource( str.getBytes() ),
ResourceType.DRL );
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
if ( kbuilder.hasErrors() ) {
fail( kbuilder.getErrors().toString() );
}
kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
StatefulKnowledgeSession ksession = JPAKnowledgeService.newStatefulKnowledgeSession( kbase, null, env );
List<?> list = new ArrayList<Object>();
for (int i = 0; i < 2; i++) {
new InsertAndFireThread(ksession.getId(), kbase, list).start();
}
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
assertEquals( 6, list.size() );
ksession.dispose();
}
private class InsertAndFireThread extends Thread {
private int ksessionId;
private KnowledgeBase kbase;
private List<?> list;
InsertAndFireThread(int ksessionId, KnowledgeBase kbase, List<?> list) {
this.ksessionId = ksessionId;
this.kbase = kbase;
this.list = list;
}
@Override
public void run() {
StatefulKnowledgeSession ksession2 = JPAKnowledgeService.loadStatefulKnowledgeSession(ksessionId, kbase, null, createEnvironment(context) );
SingleSessionCommandService sscs = (SingleSessionCommandService)((CommandBasedStatefulKnowledgeSession) ksession2).getCommandService();
sscs.addInterceptor(new OptimisticLockRetryInterceptor());
ksession2.setGlobal( "list", list );
ksession2.insert( 1 );
ksession2.insert( 2 );
ksession2.insert( 3 );
ksession2.getWorkItemManager().completeWorkItem(0, null);
ksession2.fireAllRules();
logger.info("The above " + StaleObjectStateException.class.getSimpleName() + "'s were expected in this test.");
ksession2.dispose();
}
}
}