/*
* JBoss, Home of Professional Open Source.
* Copyright 2012, Red Hat, Inc., 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.as.clustering.infinispan.affinity;
import java.util.Collection;
import java.util.Collections;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
import org.infinispan.Cache;
import org.infinispan.affinity.KeyAffinityService;
import org.infinispan.affinity.KeyGenerator;
import org.infinispan.affinity.impl.KeyAffinityServiceImpl;
import org.infinispan.notifications.cachemanagerlistener.event.CacheStoppedEvent;
import org.infinispan.remoting.transport.Address;
import org.wildfly.security.manager.action.GetAccessControlContextAction;
import org.jboss.as.clustering.msc.AsynchronousService;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.ServiceBuilder;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.ServiceTarget;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StopContext;
import org.jboss.threads.JBossThreadFactory;
import static java.security.AccessController.doPrivileged;
/**
* Key affinity service factory that will only generates keys for use by the local node.
* Returns a trivial implementation if the specified cache is not distributed.
* @author Paul Ferraro
*/
public class KeyAffinityServiceFactoryService implements Service<KeyAffinityServiceFactory>, KeyAffinityServiceFactory {
private static final ServiceName SERVICE_NAME = ServiceName.JBOSS.append("infinispan", "affinity");
public static ServiceName getServiceName(String container) {
return SERVICE_NAME.append(container);
}
public static ServiceBuilder<KeyAffinityServiceFactory> build(ServiceTarget target, String containerName, int bufferSize) {
return AsynchronousService.addService(target, KeyAffinityServiceFactoryService.getServiceName(containerName), new KeyAffinityServiceFactoryService(bufferSize), false, true);
}
private final int bufferSize;
private volatile ExecutorService executor;
public KeyAffinityServiceFactoryService(int bufferSize) {
this.bufferSize = bufferSize;
}
@Override
public KeyAffinityServiceFactory getValue() {
return this;
}
@Override
public void start(StartContext context) {
final ThreadGroup threadGroup = new ThreadGroup("KeyAffinityService ThreadGroup");
final String namePattern = "KeyAffinityService Thread Pool -- %t";
final ThreadFactory threadFactory = new JBossThreadFactory(threadGroup, Boolean.FALSE, null, namePattern, null, null, doPrivileged(GetAccessControlContextAction.getInstance()));
this.executor = Executors.newCachedThreadPool(threadFactory);
}
@Override
public void stop(StopContext context) {
this.executor.shutdown();
}
@Override
public <K> KeyAffinityService<K> createService(Cache<K, ?> cache, KeyGenerator<K> generator) {
boolean clustered = cache.getCacheConfiguration().clustering().cacheMode().isClustered();
return clustered ? new LifecycleKeyAffinityService<>(this.executor, cache, generator, this.bufferSize, Collections.singleton(cache.getCacheManager().getAddress())) : new SimpleKeyAffinityService<>(generator);
}
// Workaround for ISPN-4969
// This implementation needs to be explicitly started and stopped
private static class LifecycleKeyAffinityService<K> extends KeyAffinityServiceImpl<K> {
LifecycleKeyAffinityService(Executor executor, Cache<? extends K, ?> cache, KeyGenerator<? extends K> keyGenerator, int bufferSize, Collection<Address> filter) {
super(executor, cache, keyGenerator, bufferSize, filter, false);
}
@Override
public void handleCacheStopped(CacheStoppedEvent event) {
// Do nothing, we will stop the service manually
}
}
private static class SimpleKeyAffinityService<K> implements KeyAffinityService<K> {
private final KeyGenerator<K> generator;
private volatile boolean started = false;
SimpleKeyAffinityService(KeyGenerator<K> generator) {
this.generator = generator;
}
@Override
public void start() {
this.started = true;
}
@Override
public void stop() {
this.started = false;
}
@Override
public K getKeyForAddress(Address address) {
return this.generator.getKey();
}
@Override
public K getCollocatedKey(K otherKey) {
return this.generator.getKey();
}
@Override
public boolean isStarted() {
return this.started;
}
}
}