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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2015-2017 Payara Foundation 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://github.com/payara/Payara/blob/master/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 glassfish/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* The Payara Foundation designates this particular file as subject to the "Classpath"
* exception as provided by the Payara Foundation 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]"
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* 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
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* and therefore, elected the GPL Version 2 license, then the option applies
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*/
package fish.payara.nucleus.util;
import java.io.IOException;
import java.lang.reflect.Field;
import java.net.URL;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Set;
import java.util.jar.JarFile;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.PostConstruct;
import javax.inject.Inject;
import org.glassfish.api.StartupRunLevel;
import org.glassfish.api.event.EventListener;
import org.glassfish.api.event.EventTypes;
import org.glassfish.api.event.Events;
import org.glassfish.hk2.runlevel.RunLevel;
import org.jvnet.hk2.annotations.Service;
/**
* Clean up to stop a stale file handles remaining open
* @author steve
* @since 4.1.154
*/
@Service(name = "payara-cleanup")
@RunLevel(StartupRunLevel.VAL)
public class CleanupPostBoot implements EventListener {
@Inject
Events events;
private static Logger logger = Logger.getLogger(CleanupPostBoot.class.getName());
@PostConstruct
public void postConstruct() {
events.register(this);
}
@Override
public void event(Event event) {
if (event.is(EventTypes.SERVER_READY)) {
logger.info("Cleaning JarFileFactory Cache to prevent jar FD leaks");
try {
// Ensure JarFile is closed
Class clazz = Class.forName("sun.net.www.protocol.jar.JarFileFactory", true, URL.class.getClassLoader());
Field fields[] = clazz.getDeclaredFields();
for (Field field : fields) {
if ("fileCache".equals(field.getName())) {
field.setAccessible(true);
HashMap files = (HashMap) field.get(null);
Set jars = new HashSet<>();
jars.addAll(files.values());
for (JarFile file : jars) {
file.close();
}
}
}
} catch (ClassNotFoundException | IllegalAccessException | SecurityException | IllegalArgumentException ex) {
logger.log(Level.SEVERE, null, ex);
} catch (IOException ex) {
logger.log(Level.SEVERE, null, ex);
}
}
}
}