/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2008-2012 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.enterprise.naming.impl;
import org.glassfish.api.naming.GlassfishNamingManager;
import org.glassfish.api.naming.NamedNamingObjectProxy;
import org.glassfish.api.naming.NamespacePrefixes;
import org.glassfish.hk2.api.ServiceHandle;
import org.glassfish.hk2.api.ServiceLocator;
import javax.naming.NamingException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicReference;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import java.util.logging.Level;
import static com.sun.enterprise.naming.util.LogFacade.logger;
/**
* @author Mahesh Kannan
*/
public class NamedNamingObjectManager {
private static final AtomicReference<ServiceLocator> habitatRef
= new AtomicReference<ServiceLocator>();
private static final Map<String, NamedNamingObjectProxy> proxies = new HashMap<String, NamedNamingObjectProxy>();
private static final ReadWriteLock rwLock = new ReentrantReadWriteLock();
public static void checkAndLoadProxies(ServiceLocator habitat)
throws NamingException {
if (NamedNamingObjectManager.habitatRef.get() != habitat) {
if (habitat != null) {
rwLock.writeLock().lock();
try {
if (NamedNamingObjectManager.habitatRef.get() != habitat) {
NamedNamingObjectManager.habitatRef.set(habitat);
proxies.clear();
}
} finally {
rwLock.writeLock().unlock();
}
}
}
}
public static Object tryNamedProxies(String name)
throws NamingException {
NamedNamingObjectProxy proxy = getCachedProxy(name);
if (proxy != null) {
if (logger.isLoggable(Level.FINE)) {
logger.logp(Level.FINE, "NamedNamingObjectManager", "tryNamedProxies",
"found cached proxy [{0}] for [{1}]", new Object[]{proxy, name});
}
return proxy.handle(name);
}
// for (Binding<?> b : getHabitat().getBindings(new NamingDescriptor())) {
// for (String prefix : b.getDescriptor().getNames()) {
// if (name.startsWith(prefix)) {
// proxy = (NamedNamingObjectProxy) b.getProvider().get();
// System.out.println("NamedNamingObjectManager.tryNamedProxies: found a proxy " + proxy + " for " + name);
// cacheProxy(prefix, proxy);
// return proxy.handle(name);
// }
// }
// }
for (ServiceHandle<?> inhabitant : getHabitat()
.getAllServiceHandles(NamespacePrefixes.class)) {
List<String> prefixes = inhabitant.getActiveDescriptor().getMetadata().get(GlassfishNamingManager.NAMESPACE_METADATA_KEY);
if (prefixes == null) continue;
String prefix = null;
for (String candidate : prefixes) {
if (name.startsWith(candidate)) {
prefix = candidate;
break;
}
}
if (prefix != null) {
proxy = (NamedNamingObjectProxy) inhabitant.getService();
if (logger.isLoggable(Level.FINE)) {
logger.logp(Level.FINE, "NamedNamingObjectManager",
"tryNamedProxies",
"found a new proxy [{0}] for [{1}]", new Object[] {
proxy, name });
}
cacheProxy(prefix, proxy);
return proxy.handle(name);
}
}
return null;
}
private static ServiceLocator getHabitat() {
return habitatRef.get();
}
private static NamedNamingObjectProxy getCachedProxy(String name) {
rwLock.readLock().lock();
try {
for (String proxyPrefix : proxies.keySet()) {
if (name.startsWith(proxyPrefix)) {
return proxies.get(proxyPrefix);
}
}
} finally {
rwLock.readLock().unlock();
}
return null;
}
private static void cacheProxy(String prefix, NamedNamingObjectProxy proxy) {
rwLock.writeLock().lock();
try {
proxies.put(prefix, proxy);
} finally {
rwLock.writeLock().unlock();
}
}
}