Package org.jboss.ejb3

Source Code of org.jboss.ejb3.Ejb3Deployment

/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ejb3;

import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import javassist.bytecode.ClassFile;

import javax.management.MBeanServer;
import javax.management.ObjectName;
import javax.naming.InitialContext;
import javax.naming.NameNotFoundException;
import javax.naming.NamingException;
import javax.persistence.Entity;
import javax.security.jacc.PolicyConfiguration;
import javax.security.jacc.PolicyConfigurationFactory;

import org.hibernate.ejb.packaging.PersistenceMetadata;
import org.jboss.deployers.spi.DeploymentException;
import org.jboss.ejb3.cache.CacheFactoryRegistry;
import org.jboss.ejb3.cache.persistence.PersistenceManagerFactoryRegistry;
import org.jboss.ejb3.deployers.Ejb3Deployer;
import org.jboss.ejb3.enc.EjbModuleEjbResolver;
import org.jboss.ejb3.enc.EjbModulePersistenceUnitResolver;
import org.jboss.ejb3.enc.MessageDestinationResolver;
import org.jboss.ejb3.entity.PersistenceUnitDeployment;
import org.jboss.ejb3.entity.SecondLevelCacheUtil;
import org.jboss.ejb3.javaee.JavaEEApplication;
import org.jboss.ejb3.javaee.JavaEEComponent;
import org.jboss.ejb3.javaee.JavaEEModule;
import org.jboss.ejb3.metadata.jpa.spec.PersistenceUnitMetaData;
import org.jboss.ejb3.metadata.jpa.spec.PersistenceUnitsMetaData;
import org.jboss.ejb3.remoting.RemoteProxyFactoryRegistry;
import org.jboss.logging.Logger;
import org.jboss.metadata.ejb.jboss.JBossMetaData;
import org.jboss.metadata.javaee.spec.MessageDestinationsMetaData;
import org.jboss.virtual.VirtualFile;

/**
* An EjbModule represents a collection of beans that are deployed as a unit.
*
* @author <a href="mailto:bill@jboss.org">Bill Burke</a>
* @author adrian@jboss.org
* @version $Revision: 69262 $
*/
public abstract class Ejb3Deployment implements JavaEEModule
{
   private static final Logger log = Logger.getLogger(Ejb3Deployment.class);

   public static final String ACTUAL_ENTITY_MANAGER_FACTORY_CONTEXT = "java:/ActualEntityManagerFactories";

   public static final String MANAGED_ENTITY_FACTORY_CONTEXT = "java:/managedEntityFactories";

   private JBossMetaData metaData;
  
   private PersistenceUnitsMetaData persistenceUnitsMetaData;

   protected DeploymentUnit unit;

   protected Ejb3Deployer deployer;

   protected LinkedHashMap<ObjectName, Container> ejbContainers = new LinkedHashMap<ObjectName, Container>();

   protected boolean hasEntities;

   protected List<String> explicitEntityClasses = new ArrayList<String>();

   protected List<PersistenceUnitDeployment> persistenceUnitDeployments = new ArrayList<PersistenceUnitDeployment>();;

   protected String defaultSLSBDomain = "Stateless Bean";

   protected String defaultSFSBDomain = "Stateful Bean";

   protected String defaultMDBDomain = "Message Driven Bean";

   protected String defaultConsumerDomain = "Consumer Bean";

   protected String defaultServiceDomain = "Service Bean";

   protected InitialContext initialContext;

   protected KernelAbstraction kernelAbstraction;

   // used for @Management interfaces
   protected MBeanServer mbeanServer;

   protected DeploymentScope deploymentScope;

   protected EjbModuleEjbResolver ejbRefResolver;

   protected EjbModulePersistenceUnitResolver persistenceUnitResolver;

   protected MessageDestinationResolver messageDestinationResolver;

   //The JACC PolicyConfiguration
   PolicyConfiguration pc;

   public Ejb3Deployment(DeploymentUnit unit, DeploymentScope deploymentScope, JBossMetaData metaData, PersistenceUnitsMetaData persistenceUnitsMetaData,
         Ejb3Deployer deployer)
   {
      assert unit != null : "unit is null";
      assert deployer != null : "deployer is null";

      this.unit = unit;
      this.deployer = deployer;
      this.deploymentScope = deploymentScope;
      this.metaData = metaData;
      this.persistenceUnitsMetaData = persistenceUnitsMetaData;
      try
      {
         initialContext = InitialContextFactory.getInitialContext(unit.getJndiProperties());
      }
      catch (NamingException e)
      {
         throw new RuntimeException(e);
      }
      ejbRefResolver = new EjbModuleEjbResolver(deploymentScope, unit.getShortName(), ejbContainers, this);
      persistenceUnitResolver = new EjbModulePersistenceUnitResolver(persistenceUnitDeployments, deploymentScope,
            ejbContainers);
      MessageDestinationsMetaData destinations = null;
      if (metaData != null && metaData.getAssemblyDescriptor() != null)
         destinations = metaData.getAssemblyDescriptor().getMessageDestinations();
      messageDestinationResolver = new MessageDestinationResolver(deploymentScope, destinations);
   }

   public JavaEEApplication getApplication()
   {
      return deploymentScope;
   }

   public DeploymentScope getEar()
   {
      return deploymentScope;
   }

   public KernelAbstraction getKernelAbstraction()
   {
      return kernelAbstraction;
   }

   public MBeanServer getMbeanServer()
   {
      return mbeanServer;
   }

   public void setMbeanServer(MBeanServer mbeanServer)
   {
      this.mbeanServer = mbeanServer;
   }

   public DeploymentUnit getDeploymentUnit()
   {
      return unit;
   }

   public String getDefaultSLSBDomain()
   {
      return defaultSLSBDomain;
   }

   public Ejb3Deployer getDeployer()
   {
      return this.deployer;
   }

   public CacheFactoryRegistry getCacheFactoryRegistry()
   {
      return this.getDeployer().getCacheFactoryRegistry();
   }
  
   public RemoteProxyFactoryRegistry getRemoteProxyFactoryRegistry()
   {
      return this.getDeployer().getRemoteProxyFactoryRegistry();
   }

   public PersistenceManagerFactoryRegistry getPersistenceManagerFactoryRegistry()
   {
      return this.getDeployer().getPersistenceManagerFactoryRegistry();
   }
  
   /**
    * Returns a partial MBean attribute name of the form
    * ",ear=foo.ear,jar=foo.jar"
    *
    * @return
    */
   public String getScopeKernelName()
   {
      String scopedKernelName = "";
      if (deploymentScope != null)
         scopedKernelName += ",ear=" + deploymentScope.getShortName();
      scopedKernelName += ",jar=" + unit.getShortName();
      return scopedKernelName;
   }

   /**
    * The default AOP domain for stateless session beans
    *
    * @param defaultSLSBDomain
    */
   public void setDefaultSLSBDomain(String defaultSLSBDomain)
   {
      this.defaultSLSBDomain = defaultSLSBDomain;
   }

   public String getDefaultSFSBDomain()
   {
      return defaultSFSBDomain;
   }

   public String getDefaultConsumerDomain()
   {
      return defaultConsumerDomain;
   }

   /**
    * The default stateful session bean aspect domain
    *
    * @param defaultSFSBDomain
    */
   public void setDefaultSFSBDomain(String defaultSFSBDomain)
   {
      this.defaultSFSBDomain = defaultSFSBDomain;
   }

   public String getDefaultMDBDomain()
   {
      return defaultMDBDomain;
   }

   /**
    * The default AOP domain for message driven beans.
    *
    * @param defaultMDBDomain
    */
   public void setDefaultMDBDomain(String defaultMDBDomain)
   {
      this.defaultMDBDomain = defaultMDBDomain;
   }

   public String getDefaultServiceDomain()
   {
      return defaultServiceDomain;
   }

   /**
    * default AOP domain for service beans.
    *
    * @param defaultServiceDomain
    */
   public void setDefaultServiceDomain(String defaultServiceDomain)
   {
      this.defaultServiceDomain = defaultServiceDomain;
   }

   protected String getJaccContextId()
   {
      return unit.getShortName();
   }

   public Container getContainer(ObjectName name)
   {
      return (Container) ejbContainers.get(name);
   }

   public java.util.Map getEjbContainers()
   {
      return ejbContainers;
   }

   public PersistenceUnitDeployment getPersistenceUnitDeployment(String unitName) throws NameNotFoundException
   {
      return persistenceUnitResolver.getPersistenceUnitDeployment(unitName);
   }

   public PersistenceUnitDeployment getPersistenceUnitDeploymentInternal(String unitName)
   {
      return persistenceUnitResolver.getPersistenceUnitDeploymentInternal(unitName);
   }

   public List<PersistenceUnitDeployment> getPersistenceUnitDeployments()
   {
      return persistenceUnitDeployments;
   }

   public EJBContainer getEjbContainer(String ejbLink, Class businessIntf)
   {
      return ejbRefResolver.getEjbContainer(ejbLink, businessIntf);
   }

   public String getEjbJndiName(String ejbLink, Class businessIntf)
   {
      return ejbRefResolver.getEjbJndiName(ejbLink, businessIntf);
   }

   public EJBContainer getEjbContainer(Ejb3Deployment deployment, Class businessIntf) throws NameNotFoundException
   {
      return ejbRefResolver.getEjbContainer(deployment, businessIntf);
   }

   public EJBContainer getEjbContainer(Class businessIntf) throws NameNotFoundException
   {
      return ejbRefResolver.getEjbContainer(businessIntf);
   }

   public String getEjbJndiName(Class businessIntf) throws NameNotFoundException
   {
      return ejbRefResolver.getEjbJndiName(businessIntf);
   }

   protected void processEJBContainerMetadata(Container container) throws Exception
   {
      log.trace("Process EJB container metadata " + container);
      ObjectName on = container.getObjectName();
      ejbContainers.put(on, container);
      container.processMetadata();
   }

   protected void registerEJBContainer(Container container) throws Exception
   {
      ObjectName on = container.getObjectName();
      String name = on.getCanonicalName();
      DependencyPolicy dependsPolicy = container.getDependencyPolicy();
      dependsPolicy.addDependency("jboss.ejb:service=EJBTimerService");
      kernelAbstraction.install(name, dependsPolicy, container);
      mbeanServer.registerMBean(container.getMBean(), on);
      log.debug("Bound ejb3 container " + name);
   }

   protected abstract PolicyConfiguration createPolicyConfiguration() throws Exception;

   protected abstract void putJaccInService(PolicyConfiguration pc, DeploymentUnit unit);

   /**
    * Create all EJB containers and Persistence Units
    * The only things that should be initialized is metadata that does not need access to any
    * other deployment.  This is because we want the entire EAR to be initialized so that we do not
    * have to guess on dependencies MBean names.  This is because of the silly scoping rules for persistence units
    * and EJBs.
    *
    * @throws Exception
    */
   public void create() throws Exception
   {
      try
      {
         long start = System.currentTimeMillis();

         pc = createPolicyConfiguration();

         deploy();

         initializePersistenceUnits();

         log.debug("EJB3 deployment time took: " + (System.currentTimeMillis() - start));
      }
      catch (Exception e)
      {
         try
         {
            destroy();
         }
         catch (Exception ignored)
         {
            // ignore
         }
         throw e;
      }
   }

   public void start() throws Exception
   {
      try
      {
         startPersistenceUnits();

         for (Object o : ejbContainers.values())
         {
            Container con = (Container) o;
            processEJBContainerMetadata(con);
         }

         for (Object o : ejbContainers.values())
         {
            Container con = (Container) o;
            registerEJBContainer(con);
         }

         putJaccInService(pc, unit);
      }
      catch (Exception ex)
      {
         try
         {
            stop();
            destroy();
         }
         catch (Exception ignored)
         {
         }
         throw ex;
      }
   }

   protected void deploy() throws Exception
   {
      Ejb3HandlerFactory factory = Ejb3HandlerFactory.getInstance(this);
      if (unit.getUrl() != null)
         deployUrl(factory);

      if (unit.getClasses() != null)
      {
         for (Class explicit : unit.getClasses())
         {
            if (explicit.isAnnotationPresent(Entity.class))
            {
               continue;
            }
            String name = explicit.getName().replace('.', '/') + ".class";
            InputStream stream = explicit.getClassLoader().getResourceAsStream(name);
            deployElement(stream, factory, initialContext);
         }
      }

      deployBeansFromLib(initialContext);
   }

   protected void deployUrl(Ejb3HandlerFactory factory) throws Exception
   {
      // make sure we are not deploying ejbs from client jar
      List<VirtualFile> clientDescriptors = unit.getResources(new org.jboss.ejb3.ClientDescriptorFileFilter());

      if (clientDescriptors.size() > 0)
         return;

      InitialContext ctx = initialContext;
      // need to look into every entry in the archive to see if anybody has tags
      // defined.
      List<VirtualFile> classes = unit.getResources(new org.jboss.ejb3.ClassFileFilter());
      for (VirtualFile classFile : classes)
      {
         InputStream stream = classFile.openStream();
         deployElement(stream, factory, ctx);
      }
   }

   protected void deployElement(InputStream stream, Ejb3HandlerFactory factory, InitialContext ctx) throws Exception
   {
      DataInputStream dstream = new DataInputStream(new BufferedInputStream(stream));
      ClassFile cf = null;
      try
      {
         cf = new ClassFile(dstream);
      }
      finally
      {
         dstream.close();
         stream.close();
      }

      deployElement(factory, cf, ctx);

   }

   protected void deployBeansFromLib(InitialContext ctx) throws Exception
   {
      JBossMetaData dd = getMetaData();
      if (dd != null)
      {
         Ejb3DescriptorHandler handler = new Ejb3DescriptorHandler(this, dd);
         handler.setCtxProperties(unit.getJndiProperties());

         Map<String, Container> localContainers = new HashMap<String, Container>();
         Iterator<Container> containerIterator = ejbContainers.values().iterator();
         while (containerIterator.hasNext())
         {
            Container container = containerIterator.next();
            localContainers.put(container.getEjbName(), container);
         }

         List<Container> containers = handler.getContainers(this, localContainers);
         for (Container con : containers)
         {
            // EJBContainer has finished with all metadata initialization from XML files and such.
            // this is really a hook to do some processing after XML has been set up and before
            // and processing of dependencies and such.
            ((EJBContainer) con).instantiated();
            this.ejbContainers.put(con.getObjectName(), con);
            Ejb3Registry.register(con);
         }
      }
   }

   protected void deployElement(Ejb3HandlerFactory factory, ClassFile cf, InitialContext ctx) throws Exception
   {
      Ejb3Handler handler = factory.createHandler(cf);
      handler.setCtxProperties(unit.getJndiProperties());

      if (handler.isEjb() || handler.isJBossBeanType())
      {
         List<Container> containers = handler.getContainers(cf, this);
         for (Container con : containers)
         {
            // EJBContainer has finished with all metadata initialization from XML files and such.
            // this is really a hook to do some processing after XML has been set up and before
            // and processing of dependencies and such.
            try
            {
               ((EJBContainer) con).instantiated();
               this.ejbContainers.put(con.getObjectName(), con);
               Ejb3Registry.register(con);
            }
            catch (Throwable t)
            {
               throw new DeploymentException(
                     "Error creating ejb container " + con.getEjbName() + ": " + t.getMessage(), t);
            }
         }
      }
   }

   protected void initializePersistenceUnits() throws Exception
   {
      hasEntities = persistenceUnitsMetaData != null;

      if (!hasEntities)
         return;

      if (unit.getClasses() != null)
      {
         for (Class<?> explicit : unit.getClasses())
         {
            if (explicit.isAnnotationPresent(Entity.class))
            {
               explicitEntityClasses.add(explicit.getName());
            }
         }
      }

      // scope the unitName if this is an ejb archive
      // todo revert to this: List<PersistenceMetadata> persistenceMetadata = PersistenceXmlLoader.deploy(persistenceXmlUrl, new HashMap(), new EJB3DTDEntityResolver());
      for (PersistenceUnitMetaData persistenceUnitMetaData : persistenceUnitsMetaData)
      {
         PersistenceMetadata metadata = persistenceUnitMetaData.getLegacyMetadata();
        
         String earShortName = deploymentScope == null ? null : deploymentScope.getShortName();
         boolean isScoped = ejbContainers.size() > 0;

         // Ensure 2nd level cache entries are segregated from other deployments
         String cache_prefix = metadata.getProps().getProperty(SecondLevelCacheUtil.HIBERNATE_CACHE_REGION_PREFIX);
         if (cache_prefix == null)
         {
            // Create a region_prefix for the 2nd level cache to ensure
            // deployments are segregated
            String jarName = isScoped ? unit.getShortName() : null;
            cache_prefix = SecondLevelCacheUtil.createCacheRegionPrefix(earShortName, jarName, metadata.getName());
            metadata.getProps().setProperty(SecondLevelCacheUtil.HIBERNATE_CACHE_REGION_PREFIX, cache_prefix);
         }
         PersistenceUnitDeployment deployment = new PersistenceUnitDeployment(initialContext, this,
               explicitEntityClasses, persistenceUnitMetaData, earShortName, unit.getShortName(), isScoped);
         PersistenceUnitRegistry.register(deployment);
         persistenceUnitDeployments.add(deployment);
      }
   }

   public abstract DependencyPolicy createDependencyPolicy(JavaEEComponent component);

   protected void startPersistenceUnits()
   {
      if (persistenceUnitDeployments == null)
         return;

      for (PersistenceUnitDeployment entityDeployment : persistenceUnitDeployments)
      {
         if (entityDeployment != null)
         {
            DependencyPolicy policy = createDependencyPolicy(entityDeployment);
            entityDeployment.addDependencies(policy);
            kernelAbstraction.install(entityDeployment.getKernelName(), policy, entityDeployment);
         }
      }
   }

   protected void stopPersistenceUnits()
   {
      if (persistenceUnitDeployments == null)
         return;

      for (PersistenceUnitDeployment entityDeployment : persistenceUnitDeployments)
      {
         try
         {
            PersistenceUnitRegistry.unregister(entityDeployment);
            if (entityDeployment != null)
            {
               kernelAbstraction.uninstall(entityDeployment.getKernelName());
            }
         }
         catch (Exception e)
         {
            log.debug("error trying to shut down persistence unit", e);
         }
      }

   }

   public void stop() throws Exception
   {
      for (ObjectName on : ejbContainers.keySet())
      {
         try
         {
            mbeanServer.unregisterMBean(on);
            kernelAbstraction.uninstall(on.getCanonicalName());
         }
         catch (Exception e)
         {
            log.debug("error trying to shut down ejb container", e);
         }
      }
      stopPersistenceUnits();
   }

   public void destroy() throws Exception
   {
      undeploy();

      PolicyConfigurationFactory pcFactory = PolicyConfigurationFactory.getPolicyConfigurationFactory();
      PolicyConfiguration pc = pcFactory.getPolicyConfiguration(getJaccContextId(), true);
      pc.delete();
   }

   private void undeploy()
   {
      for (Container container : ejbContainers.values())
      {
         Ejb3Registry.unregister(container);
      }
   }

   //   /**
   //    * Get the jndi name of a message destination.
   //    *
   //    * @param name   the name of the message destination
   //    * @return       the jndi name
   //    */
   //   private String getMessageDestination(String name)
   //   {
   //      EjbJarDD dd;
   //      // FIXME: Why isn't dd stored somewhere?
   //      try
   //      {
   //         dd = EjbJarDDObjectFactory.parse(getDeploymentUnit().getEjbJarXml());
   //         dd = JBossDDObjectFactory.parse(getDeploymentUnit().getJbossXml(), dd);
   //      }
   //      catch(IOException e)
   //      {
   //         throw new RuntimeException(e);
   //      }
   //      catch(JBossXBException e)
   //      {
   //         throw new RuntimeException(e);
   //      }
   //
   //      AssemblyDescriptor ad = dd.getAssemblyDescriptor();
   //      if(ad == null)
   //         throw new IllegalStateException("No assembly descriptor found in '" + getName() + "'");
   //      MessageDestination md = ad.findMessageDestination(name);
   //      if(md == null)
   //         throw new IllegalStateException("No message destination '" + name + "' found in '" + getName() + "'");
   //      String jndiName = md.getJndiName();
   //      if(jndiName == null)
   //         throw new IllegalStateException("No jndi name specified for message destination '" + name + "' in '" + getName() + "'");
   //      return jndiName;
   //   }

   public String resolveMessageDestination(String link)
   {
      //      // FIXME: this is a copy of DeploymentEjbResolver
      //      int hashIndex = link.indexOf('#');
      //      if (hashIndex != -1)
      //      {
      //         if (deploymentScope == null)
      //         {
      //            log.warn("ejb link '" + link + "' is relative, but no deployment scope found");
      //            return null;
      //         }
      //         String relativePath = link.substring(0, hashIndex);
      //         Ejb3Deployment dep = deploymentScope.findRelativeDeployment(relativePath);
      //         if (dep == null)
      //         {
      //            log.warn("can't find a deployment for path '" + relativePath + "' of ejb link '" + link + "'");
      //            return null;
      //         }
      //         String name = link.substring(hashIndex + 1);
      //         return dep.getMessageDestination(name);
      //      }
      //      return getMessageDestination(link);
      return messageDestinationResolver.resolveMessageDestination(link);
   }

   public MessageDestinationResolver getMessageDestinationResolver()
   {
      return messageDestinationResolver;
   }

   /**
    * Get the meta data associated with this deployment or null if none.
    *
    * @return   meta data or null
    */
   public JBossMetaData getMetaData()
   {
      return metaData;
   }

   public String getName()
   {
      return unit.getShortName();
   }
}
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