com.pdd.pop.ext.glassfish.grizzly.nio.GracefulShutdownRunner Maven / Gradle / Ivy
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2013-2014 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.pdd.pop.ext.glassfish.grizzly.nio;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Lock;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.pdd.pop.ext.glassfish.grizzly.GracefulShutdownListener;
import com.pdd.pop.ext.glassfish.grizzly.Grizzly;
import com.pdd.pop.ext.glassfish.grizzly.ShutdownContext;
import com.pdd.pop.ext.glassfish.grizzly.Transport;
import com.pdd.pop.ext.glassfish.grizzly.localization.LogMessages;
class GracefulShutdownRunner implements Runnable {
private static final Logger LOGGER = Grizzly.logger(GracefulShutdownRunner.class);
private final NIOTransport transport;
private final Set shutdownListeners;
private final ExecutorService shutdownService;
private final long gracePeriod;
private final TimeUnit timeUnit;
// -------------------------------------------------------- Constructors
GracefulShutdownRunner(final NIOTransport transport,
final Set shutdownListeners,
final ExecutorService shutdownService,
final long gracePeriod, final TimeUnit timeUnit) {
this.transport = transport;
this.shutdownListeners = shutdownListeners;
this.shutdownService = shutdownService;
this.gracePeriod = gracePeriod;
this.timeUnit = timeUnit;
}
// ----------------------------------------------- Methods from Runnable
@Override
public void run() {
final int listenerCount = shutdownListeners.size();
final CountDownLatch shutdownLatch = new CountDownLatch(listenerCount);
// If there there is no timeout, invoke the listeners in the
// same thread otherwise use one additional thread to invoke them.
final Map contexts =
new HashMap(listenerCount);
if (gracePeriod <= 0) {
for (final GracefulShutdownListener l : shutdownListeners) {
final ShutdownContext ctx = createContext(contexts, l, shutdownLatch);
l.shutdownRequested(ctx);
}
} else {
shutdownService.execute(new Runnable() {
@Override
public void run() {
for (final GracefulShutdownListener l : shutdownListeners) {
final ShutdownContext ctx = createContext(contexts, l, shutdownLatch);
l.shutdownRequested(ctx);
}
}
});
}
try {
if (gracePeriod <= 0) {
shutdownLatch.await();
} else {
if (LOGGER.isLoggable(Level.WARNING)) {
LOGGER.log(Level.WARNING,
LogMessages.WARNING_GRIZZLY_GRACEFULSHUTDOWN_MSG(
transport.getName() + '[' + Integer.toHexString(hashCode()) + ']',
gracePeriod, timeUnit));
}
final boolean result = shutdownLatch.await(gracePeriod, timeUnit);
if (!result) {
if (LOGGER.isLoggable(Level.WARNING)) {
LOGGER.log(Level.WARNING,
LogMessages.WARNING_GRIZZLY_GRACEFULSHUTDOWN_EXCEEDED(
transport.getName() + '[' + Integer.toHexString(hashCode()) + ']'));
}
if (!contexts.isEmpty()) {
for (GracefulShutdownListener l : contexts.values()) {
l.shutdownForced();
}
}
}
}
} catch (InterruptedException ie) {
if (LOGGER.isLoggable(Level.WARNING)) {
LOGGER.warning(LogMessages.WARNING_GRIZZLY_GRACEFULSHUTDOWN_INTERRUPTED());
}
if (!contexts.isEmpty()) {
for (GracefulShutdownListener l : contexts.values()) {
l.shutdownForced();
}
}
} finally {
final Lock lock = transport.getState().getStateLocker().writeLock();
lock.lock();
try {
// Make sure the transport is still expecting to be shutdown
if (transport.shutdownService == this.shutdownService) {
transport.finalizeShutdown();
}
} finally {
lock.unlock();
}
}
}
private ShutdownContext createContext(final Map contexts,
final GracefulShutdownListener listener,
final CountDownLatch shutdownLatch) {
final ShutdownContext ctx = new ShutdownContext() {
boolean isNotified;
@Override
public Transport getTransport() {
return transport;
}
@Override
public synchronized void ready() {
if (!isNotified) {
isNotified = true;
contexts.remove(this);
shutdownLatch.countDown();
}
}
};
contexts.put(ctx, listener);
return ctx;
}
} // END GracefulShutdownRunner