/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2011, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program 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 distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.internal;
import java.util.Hashtable;
import java.util.concurrent.ConcurrentHashMap;
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.Reference;
import javax.naming.event.NamespaceChangeListener;
import javax.naming.event.NamingEvent;
import javax.naming.event.NamingExceptionEvent;
import javax.naming.spi.ObjectFactory;
import org.jboss.logging.Logger;
import org.hibernate.SessionFactory;
import org.hibernate.service.jndi.JndiException;
import org.hibernate.service.jndi.JndiNameException;
import org.hibernate.service.jndi.spi.JndiService;
/**
* A registry of all {@link SessionFactory} instances for the same classloader as this class.
*
* This registry is used for serialization/deserialization as well as JNDI binding.
*
* @author Steve Ebersole
*/
public class SessionFactoryRegistry {
private static final CoreMessageLogger LOG = Logger.getMessageLogger(
CoreMessageLogger.class,
SessionFactoryRegistry.class.getName()
);
public static final SessionFactoryRegistry INSTANCE = new SessionFactoryRegistry();
private final ConcurrentHashMap<String, SessionFactory> sessionFactoryMap = new ConcurrentHashMap<String, SessionFactory>();
private final ConcurrentHashMap<String,String> nameUuidXref = new ConcurrentHashMap<String, String>();
public SessionFactoryRegistry() {
LOG.debugf( "Initializing SessionFactoryRegistry : %s", this );
}
public void addSessionFactory(String uuid, String name, SessionFactory instance, JndiService jndiService) {
LOG.debugf( "Registering SessionFactory: %s (%s)", uuid, name == null ? "<unnamed>" : name );
sessionFactoryMap.put( uuid, instance );
if ( name == null ) {
LOG.debug( "Not binding factory to JNDI, no JNDI name configured" );
return;
}
nameUuidXref.put( name, uuid );
LOG.debugf( "SessionFactory name : %s, attempting to bind to JNDI", name );
try {
jndiService.bind( name, instance );
LOG.factoryBoundToJndiName( name );
try {
jndiService.addListener( name, LISTENER );
}
catch (Exception e) {
LOG.couldNotBindJndiListener();
}
}
catch (JndiNameException e) {
LOG.invalidJndiName( name, e );
}
catch (JndiException e) {
LOG.unableToBindFactoryToJndi( e );
}
}
public void removeSessionFactory(String uuid, String name, JndiService jndiService) {
if ( name != null ) {
try {
LOG.tracef( "Unbinding SessionFactory from JNDI : %s", name );
jndiService.unbind( name );
LOG.factoryUnboundFromJndiName( name );
}
catch ( JndiNameException e ) {
LOG.invalidJndiName( name, e );
}
catch ( JndiException e ) {
LOG.unableToUnbindFactoryFromJndi( e );
}
nameUuidXref.remove( name );
}
sessionFactoryMap.remove( uuid );
}
public SessionFactory getNamedSessionFactory(String name) {
LOG.debugf( "Lookup: name=%s", name );
final String uuid = nameUuidXref.get( name );
return getSessionFactory( uuid );
}
public SessionFactory getSessionFactory(String uuid) {
LOG.debugf( "Lookup: uid=%s", uuid );
final SessionFactory sessionFactory = sessionFactoryMap.get( uuid );
if ( sessionFactory == null && LOG.isDebugEnabled() ) {
LOG.debugf( "Not found: %s", uuid );
LOG.debugf( sessionFactoryMap.toString() );
}
return sessionFactory;
}
/**
* Implementation of {@literal JNDI} {@link javax.naming.event.NamespaceChangeListener} contract to listener for context events
* and react accordingly if necessary
*/
private final NamespaceChangeListener LISTENER = new NamespaceChangeListener() {
@Override
public void objectAdded(NamingEvent evt) {
LOG.debugf("A factory was successfully bound to name: %s", evt.getNewBinding().getName());
}
@Override
public void objectRemoved(NamingEvent evt) {
final String jndiName = evt.getOldBinding().getName();
LOG.factoryUnboundFromName( jndiName );
final String uuid = nameUuidXref.remove( jndiName );
if ( uuid == null ) {
// serious problem... but not sure what to do yet
}
sessionFactoryMap.remove( uuid );
}
@Override
public void objectRenamed(NamingEvent evt) {
final String oldJndiName = evt.getOldBinding().getName();
final String newJndiName = evt.getNewBinding().getName();
LOG.factoryJndiRename( oldJndiName, newJndiName );
final String uuid = nameUuidXref.remove( oldJndiName );
nameUuidXref.put( newJndiName, uuid );
}
@Override
public void namingExceptionThrown(NamingExceptionEvent evt) {
//noinspection ThrowableResultOfMethodCallIgnored
LOG.namingExceptionAccessingFactory(evt.getException());
}
};
public static class ObjectFactoryImpl implements ObjectFactory {
@Override
public Object getObjectInstance(Object reference, Name name, Context nameCtx, Hashtable<?, ?> environment)
throws Exception {
LOG.debugf( "JNDI lookup: %s", name );
final String uuid = (String) ( (Reference) reference ).get( 0 ).getContent();
LOG.tracef( "Resolved to UUID = %s", uuid );
return INSTANCE.getSessionFactory( uuid );
}
}
}