package org.kie.builder.impl;
import org.drools.compiler.PackageBuilderConfiguration;
import org.drools.core.util.StringUtils;
import org.drools.impl.InternalKnowledgeBase;
import org.drools.kproject.models.KieBaseModelImpl;
import org.kie.KieBase;
import org.kie.KieBaseConfiguration;
import org.kie.KnowledgeBaseFactory;
import org.kie.builder.CompositeKnowledgeBuilder;
import org.kie.builder.ReleaseId;
import org.kie.builder.KieBaseModel;
import org.kie.builder.KieModuleModel;
import org.kie.builder.KnowledgeBuilder;
import org.kie.builder.KnowledgeBuilderError;
import org.kie.builder.KnowledgeBuilderFactory;
import org.kie.builder.Results;
import org.kie.definition.KnowledgePackage;
import org.kie.internal.utils.CompositeClassLoader;
import org.kie.io.ResourceConfiguration;
import org.kie.io.ResourceFactory;
import org.kie.io.ResourceType;
import org.kie.io.ResourceTypeImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import static org.kie.builder.impl.KieBuilderImpl.filterFileInKBase;
public abstract class AbstractKieModule
implements
InternalKieModule {
private static final Logger log = LoggerFactory.getLogger( AbstractKieModule.class );
private final Map<String, Collection<KnowledgePackage>> packageCache = new HashMap<String, Collection<KnowledgePackage>>();
private final Map<String, Results> resultsCache = new HashMap<String, Results>();
protected final ReleaseId releaseId;
private final KieModuleModel kModuleModel;
private Map<ReleaseId, InternalKieModule> dependencies;
public AbstractKieModule(ReleaseId releaseId, KieModuleModel kModuleModel) {
this.releaseId = releaseId;
this.kModuleModel = kModuleModel;
}
public KieModuleModel getKieModuleModel() {
return this.kModuleModel;
}
// public void index() {
// if ( kieModules == null ) {
// kieModules = new HashMap<ReleaseId, InternalKieModule>();
// kieModules.putAll( dependencies );
// kieModules.put( releaseId, this );
// indexParts( kieModules, kBaseModels, kSessionModels, kJarFromKBaseName );
// }
// }
//
// public Map<ReleaseId, InternalKieModule> getKieModules() {
// if ( kieModules == null ) {
// index();
// }
// return kieModules;
// }
// public void verify(Messages messages) {
// if ( kieModules == null ) {
// kieModules = new HashMap<ReleaseId, InternalKieModule>();
// kieModules.putAll( dependencies );
// kieModules.put( releaseId, this );
// indexParts( kieModules, kBaseModels, kSessionModels, kJarFromKBaseName );
//
// for ( KieBaseModel model : kBaseModels.values() ) {
// createKieBase( ( KieBaseModelImpl) model, this, messages );
// }
// }
// }
public Map<ReleaseId, InternalKieModule> getDependencies() {
return dependencies == null ? Collections.<ReleaseId, InternalKieModule>emptyMap() : dependencies;
}
public void addDependency(InternalKieModule dependency) {
if (dependencies == null) {
dependencies = new HashMap<ReleaseId, InternalKieModule>();
}
dependencies.put(dependency.getReleaseId(), dependency);
}
public ReleaseId getReleaseId() {
return releaseId;
}
public Map<String, Collection<KnowledgePackage>> getKnowledgePackageCache() {
return packageCache;
}
public Map<String, Results> getKnowledgeResultsCache() {
return resultsCache;
}
@SuppressWarnings("deprecation")
static KnowledgeBuilder buildKnowledgePackages(KieBaseModelImpl kBaseModel,
KieProject indexedParts,
ResultsImpl messages) {
CompositeClassLoader cl = indexedParts.getClassLoader(); // the most clone the CL, as each builder and rbase populates it
PackageBuilderConfiguration pconf = new PackageBuilderConfiguration( null,
cl.clone() );
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder( pconf );
CompositeKnowledgeBuilder ckbuilder = kbuilder.batch();
Set<String> includes = kBaseModel.getIncludes();
if ( includes != null && !includes.isEmpty() ) {
for ( String include : includes ) {
if ( StringUtils.isEmpty( include ) ) {
continue;
}
InternalKieModule includeModule = indexedParts.getKieModuleForKBase( include );
if ( includeModule == null ) {
log.error( "Unable to build KieBase, could not find include: " + include );
return null;
}
addFiles( ckbuilder,
indexedParts.getKieBaseModel( include ),
includeModule );
}
}
InternalKieModule kModule = indexedParts.getKieModuleForKBase( kBaseModel.getName() );
addFiles( ckbuilder,
kBaseModel,
kModule );
ckbuilder.build();
if ( kbuilder.hasErrors() ) {
for ( KnowledgeBuilderError error : kbuilder.getErrors() ) {
messages.addMessage( error );
}
log.error( "Unable to build KieBaseModel:" + kBaseModel.getName() + "\n" + kbuilder.getErrors().toString() );
} else {
// no errors, so cache the packages
kModule.getKnowledgePackageCache().put( kBaseModel.getName(),
kbuilder.getKnowledgePackages() );
}
// always cache results
kModule.getKnowledgeResultsCache().put( kBaseModel.getName(),
messages );
return kbuilder;
}
@SuppressWarnings("deprecation")
public static KieBase createKieBase(KieBaseModelImpl kBaseModel,
KieProject indexedParts,
ResultsImpl messages) {
CompositeClassLoader cl = indexedParts.getClassLoader(); // the most clone the CL, as each builder and rbase populates it
InternalKieModule kModule = indexedParts.getKieModuleForKBase( kBaseModel.getName() );
Collection<KnowledgePackage> pkgs = kModule.getKnowledgePackageCache().get(kBaseModel.getName());
if ( pkgs == null ) {
KnowledgeBuilder kbuilder = buildKnowledgePackages(kBaseModel, indexedParts, 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.getKnowledgePackageCache().get( kBaseModel.getName() );
InternalKnowledgeBase kBase = (InternalKnowledgeBase) KnowledgeBaseFactory.newKnowledgeBase( getKnowledgeBaseConfiguration(kBaseModel, cl) );
kBase.addKnowledgePackages( pkgs );
return kBase;
}
private static KieBaseConfiguration getKnowledgeBaseConfiguration(KieBaseModelImpl kBaseModel, ClassLoader cl) {
KieBaseConfiguration kbConf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(null, cl);
kbConf.setOption(kBaseModel.getEqualsBehavior());
kbConf.setOption(kBaseModel.getEventProcessingMode());
return kbConf;
}
public static void addFiles(CompositeKnowledgeBuilder ckbuilder,
KieBaseModel kieBaseModel,
InternalKieModule kieModule) {
int fileCount = 0;
for ( String fileName : kieModule.getFileNames() ) {
if ( filterFileInKBase(kieBaseModel, fileName) && !fileName.endsWith( ".properties" ) ) {
ResourceConfiguration conf = null;
if( kieModule.isAvailable( fileName+".properties" ) ) {
// configuration file available
Properties prop = new Properties();
try {
prop.load( new ByteArrayInputStream( kieModule.getBytes(fileName+".properties") ) );
} catch ( IOException e ) {
log.error( "Error loading resource configuration from file: "+fileName+".properties" );
}
conf = ResourceTypeImpl.fromProperties( prop );
}
if( conf == null ) {
ckbuilder.add( ResourceFactory.newByteArrayResource( kieModule.getBytes( fileName ) ),
ResourceType.determineResourceType( fileName ) );
} else {
ckbuilder.add( ResourceFactory.newByteArrayResource( kieModule.getBytes( fileName ) ),
ResourceType.determineResourceType( fileName ),
conf );
}
fileCount++;
}
}
if ( fileCount == 0 ) {
if (kieModule instanceof FileKieModule) {
log.warn("No files found for KieBase " + kieBaseModel.getName() + ", searching folder " + kieModule.getFile());
} else {
log.warn("No files found for KieBase " + kieBaseModel.getName());
}
}
}
}