package org.kie.builder.impl;
import org.drools.compiler.PackageBuilderConfiguration;
import org.drools.core.util.StringUtils;
import org.drools.kproject.models.KieBaseModelImpl;
import org.kie.builder.CompositeKnowledgeBuilder;
import org.kie.builder.model.KieBaseModel;
import org.kie.builder.model.KieModuleModel;
import org.kie.builder.KnowledgeBuilder;
import org.kie.builder.KnowledgeBuilderError;
import org.kie.builder.KnowledgeBuilderFactory;
import org.kie.builder.ReleaseId;
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, KnowledgeBuilder> kBuilders = new HashMap<String, KnowledgeBuilder>();
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 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 KnowledgeBuilder getKnowledgeBuilderForKieBase(String kieBaseName) {
return kBuilders.get(kieBaseName);
}
public Collection<KnowledgePackage> getKnowledgePackagesForKieBase(String kieBaseName) {
KnowledgeBuilder kbuilder = kBuilders.get(kieBaseName);
return kbuilder != null ? kbuilder.getKnowledgePackages() : null;
}
public void cacheKnowledgeBuilderForKieBase(String kieBaseName, KnowledgeBuilder kbuilder) {
kBuilders.put(kieBaseName, kbuilder);
}
public Map<String, Results> getKnowledgeResultsCache() {
return resultsCache;
}
public void cacheResultsForKieBase(String kieBaseName, Results results) {
resultsCache.put(kieBaseName, results);
}
public Map<String, byte[]> getClassesMap() {
Map<String, byte[]> classes = new HashMap<String, byte[]>();
for ( String fileName : getFileNames() ) {
if ( fileName.endsWith( ".class" ) ) {
classes.put( fileName, getBytes( fileName ) );
}
}
return classes;
}
@SuppressWarnings("deprecation")
static KnowledgeBuilder buildKnowledgePackages(KieBaseModelImpl kBaseModel,
KieProject kieProject,
ResultsImpl messages) {
CompositeClassLoader cl = kieProject.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 = kieProject.getKieModuleForKBase( include );
if ( includeModule == null ) {
log.error( "Unable to build KieBase, could not find include: " + include );
return null;
}
addFiles(ckbuilder,
kieProject.getKieBaseModel(include),
includeModule);
}
}
InternalKieModule kModule = kieProject.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() );
}
// cache KnowledgeBuilder and results
kModule.cacheKnowledgeBuilderForKieBase( kBaseModel.getName(), kbuilder );
kModule.cacheResultsForKieBase( kBaseModel.getName(), messages );
return kbuilder;
}
private 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 = getResourceConfiguration(kieModule, fileName);
byte[] bytes = kieModule.getBytes( fileName );
if ( bytes == null || bytes.length == 0 ) {
continue;
}
if ( conf == null ) {
ckbuilder.add( ResourceFactory.newByteArrayResource( bytes ).setSourcePath( fileName ),
ResourceType.determineResourceType( fileName ) );
} else {
ckbuilder.add( ResourceFactory.newByteArrayResource( bytes ).setSourcePath(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());
}
}
}
public static ResourceConfiguration getResourceConfiguration(InternalKieModule kieModule, String fileName) {
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);
}
return conf;
}
}