package org.drools.compiler.kie.builder.impl;
import org.drools.compiler.kie.builder.impl.event.KieServicesEventListerner;
import org.drools.core.RuleBaseConfiguration;
import org.drools.core.SessionConfiguration;
import org.drools.core.audit.KnowledgeRuntimeLoggerProviderImpl;
import org.drools.core.command.impl.CommandFactoryServiceImpl;
import org.drools.core.concurrent.ExecutorProviderImpl;
import org.drools.core.impl.EnvironmentFactory;
import org.drools.core.io.impl.ResourceFactoryServiceImpl;
import org.drools.compiler.kproject.ReleaseIdImpl;
import org.drools.compiler.kproject.models.KieModuleModelImpl;
import org.drools.core.marshalling.impl.MarshallerProviderImpl;
import org.kie.api.KieBaseConfiguration;
import org.kie.api.KieServices;
import org.kie.api.builder.KieScannerFactoryService;
import org.kie.api.builder.ReleaseId;
import org.kie.api.builder.KieBuilder;
import org.kie.api.builder.KieFileSystem;
import org.kie.api.builder.model.KieModuleModel;
import org.kie.api.builder.KieRepository;
import org.kie.api.builder.KieScanner;
import org.kie.api.command.KieCommands;
import org.kie.api.concurrent.KieExecutors;
import org.kie.api.runtime.Environment;
import org.kie.api.runtime.KieSessionConfiguration;
import org.kie.internal.io.ResourceFactoryService;
import org.kie.internal.utils.ServiceRegistryImpl;
import org.kie.api.io.KieResources;
import org.kie.api.logger.KieLoggers;
import org.kie.api.marshalling.KieMarshallers;
import org.kie.api.persistence.jpa.KieStoreServices;
import org.kie.api.runtime.KieContainer;
import java.io.File;
import java.lang.ref.WeakReference;
import java.util.Properties;
import static org.drools.compiler.compiler.io.memory.MemoryFileSystem.readFromJar;
import static org.drools.core.common.ProjectClassLoader.findParentClassLoader;
public class KieServicesImpl implements InternalKieServices {
private volatile KieContainer classpathKContainer;
private volatile ClassLoader classpathClassLoader;
private final Object lock = new Object();
private WeakReference<KieServicesEventListerner> listener;
public KieRepository getRepository() {
return KieRepositoryImpl.INSTANCE;
}
/**
* Returns KieContainer for the classpath
*/
public KieContainer getKieClasspathContainer() {
return getKieClasspathContainer( findParentClassLoader() );
}
public KieContainer getKieClasspathContainer(ClassLoader classLoader) {
if ( classpathKContainer == null ) {
// these are heavy to create, don't want to end up with two
synchronized ( lock ) {
if ( classpathKContainer == null ) {
classpathClassLoader = classLoader;
classpathKContainer = newKieClasspathContainer(classLoader);
} else if (classLoader != classpathClassLoader) {
throw new IllegalStateException("There's already another KieContainer created from a different ClassLoader");
}
}
} else if (classLoader != classpathClassLoader) {
throw new IllegalStateException("There's already another KieContainer created from a different ClassLoader");
}
return classpathKContainer;
}
public KieContainer newKieClasspathContainer() {
return newKieClasspathContainer( findParentClassLoader() );
}
public KieContainer newKieClasspathContainer(ClassLoader classLoader) {
return new KieContainerImpl(new ClasspathKieProject(classLoader, listener), null);
}
public void nullKieClasspathContainer() {
// used for testing only
synchronized ( lock ) {
classpathKContainer = null;
classpathClassLoader = null;
}
}
public KieContainer newKieContainer(ReleaseId releaseId) {
InternalKieModule kieModule = (InternalKieModule) getRepository().getKieModule(releaseId);
if (kieModule == null) {
throw new RuntimeException("Cannot find KieModule: " + releaseId);
}
KieProject kProject = new KieModuleKieProject( kieModule );
return new KieContainerImpl( kProject, getRepository(), releaseId );
}
public KieBuilder newKieBuilder(File file) {
return file.isDirectory() ? new KieBuilderImpl(file) : newKieBuilder(new KieFileSystemImpl(readFromJar(file)));
}
public KieBuilder newKieBuilder(KieFileSystem kieFileSystem) {
return new KieBuilderImpl(kieFileSystem);
}
public KieScanner newKieScanner(KieContainer kieContainer) {
KieScannerFactoryService scannerFactoryService = ServiceRegistryImpl.getInstance().get( KieScannerFactoryService.class );
InternalKieScanner scanner = (InternalKieScanner)scannerFactoryService.newKieScanner();
scanner.setKieContainer(kieContainer);
return scanner;
}
public KieResources getResources() {
// instantiating directly, but we might want to use the service registry instead
return new ResourceFactoryServiceImpl();
}
public KieCommands getCommands() {
// instantiating directly, but we might want to use the service registry instead
return new CommandFactoryServiceImpl();
}
public KieMarshallers getMarshallers() {
// instantiating directly, but we might want to use the service registry instead
return new MarshallerProviderImpl();
}
public KieLoggers getLoggers() {
// instantiating directly, but we might want to use the service registry instead
return new KnowledgeRuntimeLoggerProviderImpl();
}
public KieExecutors getExecutors() {
// instantiating directly, but we might want to use the service registry instead
return new ExecutorProviderImpl();
}
public KieStoreServices getStoreServices() {
return ServiceRegistryImpl.getInstance().get( KieStoreServices.class );
}
public ReleaseId newReleaseId(String groupId, String artifactId, String version) {
return new ReleaseIdImpl(groupId, artifactId, version);
}
public KieModuleModel newKieModuleModel() {
return new KieModuleModelImpl();
}
public KieFileSystem newKieFileSystem() {
return new KieFileSystemImpl();
}
public KieBaseConfiguration newKieBaseConfiguration() {
return new RuleBaseConfiguration();
}
public KieBaseConfiguration newKieBaseConfiguration(Properties properties) {
return new RuleBaseConfiguration(properties, null);
}
public KieBaseConfiguration newKieBaseConfiguration(Properties properties, ClassLoader classLoader) {
return new RuleBaseConfiguration(properties, classLoader);
}
public KieSessionConfiguration newKieSessionConfiguration() {
return new SessionConfiguration();
}
public KieSessionConfiguration newKieSessionConfiguration(Properties properties) {
return new SessionConfiguration(properties);
}
public Environment newEnvironment() {
return EnvironmentFactory.newEnvironment();
}
@Override
public void registerListener(KieServicesEventListerner listener) {
this.listener = new WeakReference<KieServicesEventListerner>(listener);
}
}