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KieContainerImpl.java
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KieContainerImpl.java
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package org.drools.compiler.kie.builder.impl;
import static org.drools.compiler.kie.builder.impl.AbstractKieModule.buildKnowledgePackages;
import static org.drools.compiler.kie.builder.impl.KieBuilderImpl.filterFileInKBase;
import static org.drools.compiler.kie.util.CDIHelper.wireListnersAndWIHs;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.drools.compiler.builder.impl.KnowledgeBuilderImpl;
import org.drools.compiler.compiler.PackageBuilder;
import org.drools.compiler.compiler.PackageRegistry;
import org.drools.compiler.kie.util.ChangeSetBuilder;
import org.drools.compiler.kie.util.KieJarChangeSet;
import org.drools.compiler.kproject.models.KieBaseModelImpl;
import org.drools.compiler.kproject.models.KieSessionModelImpl;
import org.drools.compiler.lang.descr.RuleDescr;
import org.drools.core.definitions.impl.KnowledgePackageImp;
import org.drools.core.impl.InternalKnowledgeBase;
import org.drools.core.rule.*;
import org.drools.core.rule.Package;
import org.kie.api.KieBase;
import org.kie.api.KieBaseConfiguration;
import org.kie.api.KieServices;
import org.kie.api.builder.KieModule;
import org.kie.api.builder.KieRepository;
import org.kie.api.builder.Message.Level;
import org.kie.api.builder.ReleaseId;
import org.kie.api.builder.Results;
import org.kie.api.builder.model.FileLoggerModel;
import org.kie.api.builder.model.KieBaseModel;
import org.kie.api.builder.model.KieSessionModel;
import org.kie.api.conf.EventProcessingOption;
import org.kie.api.event.KieRuntimeEventManager;
import org.kie.api.io.Resource;
import org.kie.api.io.ResourceType;
import org.kie.api.logger.KieLoggers;
import org.kie.api.runtime.Environment;
import org.kie.api.runtime.KieSession;
import org.kie.api.runtime.KieSessionConfiguration;
import org.kie.api.runtime.StatelessKieSession;
import org.kie.internal.KnowledgeBase;
import org.kie.internal.KnowledgeBaseFactory;
import org.kie.internal.builder.ChangeType;
import org.kie.internal.builder.CompositeKnowledgeBuilder;
import org.kie.internal.builder.KnowledgeBuilder;
import org.kie.internal.builder.KnowledgeBuilderFactory;
import org.kie.internal.builder.ResourceChange;
import org.kie.internal.builder.ResourceChangeSet;
import org.kie.internal.definition.KnowledgePackage;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class KieContainerImpl
implements
InternalKieContainer {
private static final Logger log = LoggerFactory.getLogger( KieContainerImpl.class );
private KieProject kProject;
private final Map<String, KieBase> kBases = new HashMap<String, KieBase>();
private final Map<String, KieSession> kSessions = new HashMap<String, KieSession>();
private final Map<String, StatelessKieSession> statelessKSessions = new HashMap<String, StatelessKieSession>();
private final KieRepository kr;
public KieContainerImpl(KieProject kProject,
KieRepository kr) {
this.kr = kr;
this.kProject = kProject;
kProject.init();
}
public ReleaseId getReleaseId() {
return kProject.getGAV();
}
public void updateToVersion(ReleaseId newReleaseId) {
if( kProject instanceof ClasspathKieProject ) {
throw new UnsupportedOperationException( "It is not possible to update a classpath container to a new version." );
}
ReleaseId currentReleaseId = kProject.getGAV();
// if the new and the current release are equal (a snapshot) check if there is an older version with the same releaseId
InternalKieModule currentKM = currentReleaseId.equals( newReleaseId ) && !currentReleaseId.equals(kr.getDefaultReleaseId()) ?
(InternalKieModule) ((KieRepositoryImpl)kr).getOldKieModule( currentReleaseId ) :
(InternalKieModule) kr.getKieModule( currentReleaseId );
InternalKieModule newKM = (InternalKieModule) kr.getKieModule( newReleaseId );
ChangeSetBuilder csb = new ChangeSetBuilder();
KieJarChangeSet cs = csb.build( currentKM, newKM );
((KieModuleKieProject) kProject).updateToModule( newKM );
List<String> kbasesToRemove = new ArrayList<String>();
for( Map.Entry<String, KieBase> kBaseEntry : kBases.entrySet() ) {
String kbaseName = kBaseEntry.getKey();
KieBaseModel kieBaseModel = kProject.getKieBaseModel( kbaseName );
// if a kbase no longer exists, just remove it from the cache
if( kieBaseModel == null ) {
// have to save for later removal to avoid iteration errors
kbasesToRemove.add( kbaseName );
} else {
// attaching the builder to the kbase
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder( (KnowledgeBase) kBaseEntry.getValue() );
PackageBuilder pkgbuilder = kbuilder instanceof PackageBuilder ? ((PackageBuilder) kbuilder) : ((KnowledgeBuilderImpl)kbuilder).getPackageBuilder();
CompositeKnowledgeBuilder ckbuilder = kbuilder.batch();
int fileCount = 0;
// then update and add new resources
for ( ResourceChangeSet rcs : cs.getChanges().values() ) {
if ( ! rcs.getChangeType().equals( ChangeType.REMOVED ) ) {
String resourceName = rcs.getResourceName();
if ( !resourceName.endsWith( ".properties" ) && filterFileInKBase(newKM, kieBaseModel, resourceName) ) {
Resource resource = currentKM.getResource( rcs.getResourceName() );
List<ResourceChange> changes = rcs.getChanges();
if ( ! changes.isEmpty() ) {
// we need to deal with individual parts of the resource
fileCount += AbstractKieModule.updateResource( ckbuilder,
newKM,
resourceName,
rcs ) ? 1 : 0;
} else {
// the whole resource has to handled
if( rcs.getChangeType().equals( ChangeType.UPDATED ) ) {
pkgbuilder.removeObjectsGeneratedFromResource( resource );
}
fileCount += AbstractKieModule.addFile( ckbuilder,
newKM,
resourceName ) ? 1 : 0;
}
}
}
KieBase kBase = kBaseEntry.getValue();
for ( ResourceChangeSet.RuleLoadOrder loadOrder : rcs.getLoadOrder() ) {
Rule rule = (Rule) ((KnowledgePackageImp)kBase.getKiePackage( loadOrder.getPkgName() )).getRule( loadOrder.getRuleName() );
if ( rule != null ) {
// rule can be null, if it didn't exist before
rule.setLoadOrder( loadOrder.getLoadOrder() );
}
}
}
pkgbuilder.startPackageUpdate();
try {
// remove resources first
for ( ResourceChangeSet rcs : cs.getChanges().values() ) {
if ( rcs.getChangeType().equals( ChangeType.REMOVED ) ) {
String resourceName = rcs.getResourceName();
if ( !resourceName.endsWith( ".properties" ) && filterFileInKBase(newKM, kieBaseModel, resourceName) ) {
pkgbuilder.removeObjectsGeneratedFromResource( currentKM.getResource( resourceName ) );
}
}
}
if( fileCount > 0 ) {
ckbuilder.build();
}
} finally {
pkgbuilder.completePackageUpdate();
}
}
}
for (String kbaseToRemove : kbasesToRemove) {
kBases.remove(kbaseToRemove);
}
for( Iterator<Map.Entry<String,KieSession>> it = this.kSessions.entrySet().iterator(); it.hasNext(); ) {
Entry<String, KieSession> ksession = it.next();
if( kProject.getKieSessionModel( ksession.getKey() ) == null ) {
// remove sessions that no longer exist
it.remove();
}
}
for( Iterator<Map.Entry<String,StatelessKieSession>> it = this.statelessKSessions.entrySet().iterator(); it.hasNext(); ) {
Entry<String, StatelessKieSession> ksession = it.next();
if( kProject.getKieSessionModel( ksession.getKey() ) == null ) {
// remove sessions that no longer exist
it.remove();
}
}
}
public KieBase getKieBase() {
KieBaseModel defaultKieBaseModel = kProject.getDefaultKieBaseModel();
if (defaultKieBaseModel == null) {
throw new RuntimeException("Cannot find a default KieBase");
}
return getKieBase( defaultKieBaseModel.getName() );
}
public Results verify() {
return this.kProject.verify();
}
public KieBase getKieBase(String kBaseName) {
KieBase kBase = kBases.get( kBaseName );
if ( kBase == null ) {
ResultsImpl msgs = new ResultsImpl();
kBase = createKieBase(kBaseName, kProject, msgs, null);
if ( kBase == null ) {
// build error, throw runtime exception
throw new RuntimeException( "Error while creating KieBase" + msgs.filterMessages( Level.ERROR ) );
}
kBases.put( kBaseName, kBase );
}
return kBase;
}
public KieBase newKieBase(KieBaseConfiguration conf) {
KieBaseModel defaultKieBaseModel = kProject.getDefaultKieBaseModel();
if (defaultKieBaseModel == null) {
throw new RuntimeException("Cannot find a defualt KieBase");
}
return newKieBase(defaultKieBaseModel.getName(), conf);
}
public KieBase newKieBase(String kBaseName, KieBaseConfiguration conf) {
ResultsImpl msgs = new ResultsImpl();
KieBase kBase = createKieBase(kBaseName, kProject, msgs, conf);
if ( kBase == null ) {
// build error, throw runtime exception
throw new RuntimeException( "Error while creating KieBase" + msgs.filterMessages( Level.ERROR ) );
}
return kBase;
}
private KieBase createKieBase(String kBaseName, KieProject kieProject, ResultsImpl messages, KieBaseConfiguration conf) {
KieBaseModelImpl kBaseModel = (KieBaseModelImpl) kProject.getKieBaseModel(kBaseName);
if (kBaseModel == null) {
throw new RuntimeException( "The requested KieBase \"" + kBaseName + "\" does not exist" );
}
ClassLoader cl = kieProject.getClassLoader();
InternalKieModule kModule = kieProject.getKieModuleForKBase( kBaseModel.getName() );
Collection<KnowledgePackage> pkgs = kModule.getKnowledgePackagesForKieBase(kBaseModel.getName());
if ( pkgs == null ) {
KnowledgeBuilder kbuilder = buildKnowledgePackages(kBaseModel, kieProject, messages);
if ( kbuilder.hasErrors() ) {
// Messages already populated by the buildKnowlegePackages
return null;
}
}
// if we get to here, then we know the pkgs is now cached
pkgs = kModule.getKnowledgePackagesForKieBase(kBaseModel.getName());
if ( kBaseModel.getEventProcessingMode() == EventProcessingOption.CLOUD &&
(conf == null || conf.getOption(EventProcessingOption.class) == EventProcessingOption.CLOUD ) ) {
for (KnowledgePackage kpkg : pkgs) {
if ( ((KnowledgePackageImp) kpkg).pkg.needsStreamMode() ) {
throw new RuntimeException( "The requested KieBase \"" + kBaseName + "\" has been set to run in CLOUD mode but requires features only available in STREAM mode" );
}
}
}
InternalKnowledgeBase kBase = (InternalKnowledgeBase) KnowledgeBaseFactory.newKnowledgeBase( conf != null ? conf : getKnowledgeBaseConfiguration(kBaseModel, cl) );
kBase.addKnowledgePackages( pkgs );
return kBase;
}
private KieBaseConfiguration getKnowledgeBaseConfiguration(KieBaseModelImpl kBaseModel, ClassLoader cl) {
KieBaseConfiguration kbConf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(null, cl);
kbConf.setOption(kBaseModel.getEqualsBehavior());
kbConf.setOption(kBaseModel.getEventProcessingMode());
kbConf.setOption(kBaseModel.getDeclarativeAgenda());
return kbConf;
}
public KieSession newKieSession() {
return newKieSession((Environment)null, null);
}
public KieSession getKieSession() {
KieSessionModel defaultKieSessionModel = findKieSessionModel(false);
return getKieSession(defaultKieSessionModel.getName());
}
public KieSession newKieSession(KieSessionConfiguration conf) {
return newKieSession((Environment)null, conf);
}
public KieSession newKieSession(Environment environment) {
return newKieSession(environment, null);
}
public KieSession newKieSession(Environment environment, KieSessionConfiguration conf) {
KieSessionModel defaultKieSessionModel = findKieSessionModel(false);
return newKieSession(defaultKieSessionModel.getName(), environment, conf);
}
private KieSessionModel findKieSessionModel(boolean stateless) {
KieSessionModel defaultKieSessionModel = stateless ? kProject.getDefaultStatelessKieSession() : kProject.getDefaultKieSession();
if (defaultKieSessionModel == null) {
throw new RuntimeException(stateless ? "Cannot find a default StatelessKieSession" : "Cannot find a default KieSession");
}
return defaultKieSessionModel;
}
public StatelessKieSession newStatelessKieSession() {
return newStatelessKieSession((KieSessionConfiguration)null);
}
public StatelessKieSession newStatelessKieSession(KieSessionConfiguration conf) {
KieSessionModel defaultKieSessionModel = findKieSessionModel(true);
return newStatelessKieSession(defaultKieSessionModel.getName(), conf);
}
public StatelessKieSession getStatelessKieSession() {
KieSessionModel defaultKieSessionModel = findKieSessionModel(true);
return getStatelessKieSession(defaultKieSessionModel.getName());
}
public KieSession newKieSession(String kSessionName) {
return newKieSession(kSessionName, null, null);
}
public KieSession getKieSession(String kSessionName) {
KieSession kieSession = kSessions.get(kSessionName);
return kieSession != null ? kieSession : newKieSession(kSessionName);
}
public KieSession newKieSession(String kSessionName, Environment environment) {
return newKieSession(kSessionName, environment, null);
}
public KieSession newKieSession(String kSessionName, KieSessionConfiguration conf) {
return newKieSession(kSessionName, null, conf);
}
public KieSession newKieSession(String kSessionName, Environment environment, KieSessionConfiguration conf) {
KieSessionModelImpl kSessionModel = (KieSessionModelImpl) getKieSessionModel(kSessionName);
if ( kSessionModel == null ) {
log.error("Unknown KieSession name: " + kSessionName);
return null;
}
if (kSessionModel.getType() == KieSessionModel.KieSessionType.STATELESS) {
throw new RuntimeException("Trying to create a stateful KieSession from a stateless KieSessionModel: " + kSessionName);
}
KieBase kBase = getKieBase( kSessionModel.getKieBaseModel().getName() );
if ( kBase == null ) {
log.error("Unknown KieBase name: " + kSessionModel.getKieBaseModel().getName());
return null;
}
KieSession kSession = kBase.newKieSession( conf != null ? conf : getKnowledgeSessionConfiguration(kSessionModel), environment );
wireListnersAndWIHs(kSessionModel, kSession);
registerLoggers(kSessionModel, kSession);
KieSession oldSession = kSessions.remove(kSessionName);
if (oldSession != null) {
oldSession.dispose();
}
kSessions.put(kSessionName, kSession);
return kSession;
}
private void registerLoggers(KieSessionModelImpl kSessionModel, KieRuntimeEventManager kSession) {
KieLoggers kieLoggers = KieServices.Factory.get().getLoggers();
if (kSessionModel.getConsoleLogger() != null) {
kieLoggers.newConsoleLogger(kSession);
}
FileLoggerModel fileLogger = kSessionModel.getFileLogger();
if (fileLogger != null) {
if (fileLogger.isThreaded()) {
kieLoggers.newThreadedFileLogger(kSession, fileLogger.getFile(), fileLogger.getInterval());
} else {
kieLoggers.newFileLogger(kSession, fileLogger.getFile());
}
}
}
public StatelessKieSession newStatelessKieSession(String kSessionName) {
return newStatelessKieSession(kSessionName, null);
}
public StatelessKieSession newStatelessKieSession(String kSessionName, KieSessionConfiguration conf) {
KieSessionModelImpl kSessionModel = (KieSessionModelImpl) kProject.getKieSessionModel( kSessionName );
if ( kSessionName == null ) {
log.error("Unknown KieSession name: " + kSessionName);
return null;
}
if (kSessionModel.getType() == KieSessionModel.KieSessionType.STATEFUL) {
throw new RuntimeException("Trying to create a stateless KieSession from a stateful KieSessionModel: " + kSessionName);
}
KieBase kBase = getKieBase( kSessionModel.getKieBaseModel().getName() );
if ( kBase == null ) {
log.error("Unknown KieBase name: " + kSessionModel.getKieBaseModel().getName());
return null;
}
StatelessKieSession statelessKieSession = kBase.newStatelessKieSession( conf != null ? conf : getKnowledgeSessionConfiguration(kSessionModel) );
registerLoggers(kSessionModel, statelessKieSession);
statelessKSessions.put(kSessionName, statelessKieSession);
return statelessKieSession;
}
public StatelessKieSession getStatelessKieSession(String kSessionName) {
StatelessKieSession kieSession = statelessKSessions.get(kSessionName);
return kieSession != null ? kieSession : newStatelessKieSession(kSessionName);
}
private KieSessionConfiguration getKnowledgeSessionConfiguration(KieSessionModelImpl kSessionModel) {
KieSessionConfiguration ksConf = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();
ksConf.setOption( kSessionModel.getClockType() );
ksConf.setOption( kSessionModel.getBeliefSystem() );
return ksConf;
}
public void dispose() {
for (KieSession kieSession : kSessions.values()) {
kieSession.dispose();
}
kSessions.clear();
statelessKSessions.clear();
}
public KieProject getKieProject() {
return kProject;
}
public KieModule getKieModuleForKBase(String kBaseName) {
return kProject.getKieModuleForKBase( kBaseName );
}
public KieBaseModel getKieBaseModel(String kBaseName) {
return kProject.getKieBaseModel(kBaseName);
}
public KieSessionModel getKieSessionModel(String kSessionName) {
return kProject.getKieSessionModel(kSessionName);
}
@Override
public ClassLoader getClassLoader() {
return this.kProject.getClassLoader();
}
}