org.drools.compiler.kie.builder.impl.KieServicesImpl Maven / Gradle / Ivy
/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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.compiler.kie.builder.impl;
import java.io.File;
import java.lang.ref.WeakReference;
import java.util.Properties;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import org.drools.compiler.kie.builder.impl.event.KieServicesEventListerner;
import org.drools.compiler.kproject.ReleaseIdImpl;
import org.drools.compiler.kproject.models.KieModuleModelImpl;
import org.drools.core.RuleBaseConfiguration;
import org.drools.core.SessionConfiguration;
import org.drools.core.SessionConfigurationImpl;
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.core.marshalling.impl.MarshallerProviderImpl;
import org.kie.api.KieBaseConfiguration;
import org.kie.api.builder.KieBuilder;
import org.kie.api.builder.KieFileSystem;
import org.kie.api.builder.KieRepository;
import org.kie.api.builder.KieScanner;
import org.kie.api.builder.KieScannerFactoryService;
import org.kie.api.builder.ReleaseId;
import org.kie.api.builder.model.KieModuleModel;
import org.kie.api.command.KieCommands;
import org.kie.api.concurrent.KieExecutors;
import org.kie.api.internal.utils.ServiceRegistry;
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.Environment;
import org.kie.api.runtime.KieContainer;
import org.kie.api.runtime.KieSessionConfiguration;
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 String classpathKContainerId;
private volatile ClassLoader classpathClassLoader;
private final Object lock = new Object();
private WeakReference listener;
private final ConcurrentMap kContainers = new ConcurrentHashMap();
public KieRepository getRepository() {
return KieRepositoryImpl.INSTANCE;
}
/**
* Returns KieContainer for the classpath
*/
public KieContainer getKieClasspathContainer() {
return getKieClasspathContainer( null, findParentClassLoader() );
}
public KieContainer getKieClasspathContainer(ClassLoader classLoader) {
return getKieClasspathContainer( null, classLoader );
}
public KieContainer getKieClasspathContainer(String containerId) {
return getKieClasspathContainer( containerId, findParentClassLoader() );
}
public KieContainer getKieClasspathContainer(String containerId, 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;
if (containerId == null) {
classpathKContainerId = UUID.randomUUID().toString();
} else {
classpathKContainerId = containerId;
}
classpathKContainer = newKieClasspathContainer(classpathKContainerId, 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");
}
if (containerId != null && !classpathKContainerId.equals(containerId)) {
throw new IllegalStateException("The default global singleton KieClasspathContainer was already created with id "+classpathKContainerId);
}
return classpathKContainer;
}
public KieContainer newKieClasspathContainer() {
return newKieClasspathContainer( null, findParentClassLoader() );
}
public KieContainer newKieClasspathContainer(ClassLoader classLoader) {
return newKieClasspathContainer( null, classLoader );
}
public KieContainer newKieClasspathContainer(String containerId) {
return newKieClasspathContainer( containerId, findParentClassLoader() );
}
public KieContainer newKieClasspathContainer(String containerId, ClassLoader classLoader) {
if (containerId == null) {
KieContainerImpl newContainer = new KieContainerImpl(UUID.randomUUID().toString(), new ClasspathKieProject(classLoader, listener), null);
return newContainer;
}
if ( kContainers.get(containerId) == null ) {
KieContainerImpl newContainer = new KieContainerImpl(containerId, new ClasspathKieProject(classLoader, listener), null);
KieContainer check = kContainers.putIfAbsent(containerId, newContainer);
if (check == null) {
return newContainer;
} else {
newContainer.dispose();
throw new IllegalStateException("There's already another KieContainer created with the id "+containerId);
}
} else {
throw new IllegalStateException("There's already another KieContainer created with the id "+containerId);
}
}
public void nullKieClasspathContainer() {
// used for testing only
synchronized ( lock ) {
classpathKContainer = null;
classpathKContainerId = null;
classpathClassLoader = null;
}
}
/**
* Voids the internal map of containerId (s) used for handling reference and unique checks. This method is intended for use in unit test only.
*/
public void nullAllContainerIds() {
synchronized ( lock ) {
kContainers.clear();
}
}
@Override
public void clearRefToContainerId(String containerId, KieContainer containerRef) {
kContainers.remove(containerId, containerRef);
}
public KieContainer newKieContainer(ReleaseId releaseId) {
return newKieContainer(null, releaseId, null);
}
public KieContainer newKieContainer(String containerId, ReleaseId releaseId) {
return newKieContainer(containerId, releaseId, null);
}
public KieContainer newKieContainer(ReleaseId releaseId, ClassLoader classLoader) {
return newKieContainer(null, releaseId, classLoader);
}
public KieContainer newKieContainer(String containerId, ReleaseId releaseId, ClassLoader classLoader) {
InternalKieModule kieModule = (InternalKieModule) getRepository().getKieModule(releaseId);
if (kieModule == null) {
throw new RuntimeException("Cannot find KieModule: " + releaseId);
}
if (classLoader == null) {
classLoader = kieModule.getModuleClassLoader();
}
KieProject kProject = new KieModuleKieProject( kieModule, classLoader );
if (classLoader != kProject.getClassLoader()) {
// if the new kproject has a different classloader than the original one it has to be initialized
kProject.init();
}
if (containerId == null) {
KieContainerImpl newContainer = new KieContainerImpl( UUID.randomUUID().toString(), kProject, getRepository(), releaseId );
return newContainer;
}
if ( kContainers.get(containerId) == null ) {
KieContainerImpl newContainer = new KieContainerImpl( containerId, kProject, getRepository(), releaseId );
KieContainer check = kContainers.putIfAbsent(containerId, newContainer);
if (check == null) {
return newContainer;
} else {
newContainer.dispose();
throw new IllegalStateException("There's already another KieContainer created with the id "+containerId);
}
} else {
throw new IllegalStateException("There's already another KieContainer created with the id "+containerId);
}
}
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 KieBuilder newKieBuilder(KieFileSystem kieFileSystem, ClassLoader classLoader) {
return new KieBuilderImpl(kieFileSystem, classLoader);
}
public KieScanner newKieScanner(KieContainer kieContainer) {
KieScannerFactoryService scannerFactoryService = ServiceRegistry.getInstance().get(KieScannerFactoryService.class);
if (scannerFactoryService == null) {
throw new RuntimeException( "Cannot instance a maven based KieScanner, is kie-ci on the classpath?" );
}
InternalKieScanner scanner = (InternalKieScanner)scannerFactoryService.newKieScanner();
scanner.setKieContainer(kieContainer);
return scanner;
}
public KieScanner newKieScanner(KieContainer kieContainer, String repositoryFolder) {
return new KieFileSystemScannerImpl( kieContainer, repositoryFolder );
}
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 ServiceRegistry.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 SessionConfiguration.newInstance();
}
public KieSessionConfiguration newKieSessionConfiguration(Properties properties) {
return new SessionConfigurationImpl(properties);
}
public KieSessionConfiguration newKieSessionConfiguration(Properties properties, ClassLoader classLoader) {
return new SessionConfigurationImpl(properties, classLoader);
}
public Environment newEnvironment() {
return EnvironmentFactory.newEnvironment();
}
@Override
public void registerListener(KieServicesEventListerner listener) {
this.listener = new WeakReference(listener);
}
}
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