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ScheduleLocalEntriesTask.java
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ScheduleLocalEntriesTask.java
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/*
* JBoss, Home of Professional Open Source.
* Copyright 2020, 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.wildfly.clustering.ee.infinispan.scheduler;
import java.util.Iterator;
import java.util.Map;
import java.util.function.BiConsumer;
import java.util.function.Predicate;
import java.util.stream.Stream;
import org.infinispan.Cache;
import org.infinispan.context.Flag;
import org.wildfly.clustering.ee.Key;
import org.wildfly.clustering.infinispan.distribution.Locality;
/**
* A task which schedules newly owned entries.
* @author Paul Ferraro
* @param <I> identifier type
* @param <K> cache key type
* @param <V> cache value type
*/
public class ScheduleLocalEntriesTask<I, M, K extends Key<I>, V extends M> implements BiConsumer<Locality, Locality> {
private final Cache<K, V> cache;
private final Predicate<Map.Entry<? super K, ? super V>> filter;
private final Scheduler<I, M> scheduler;
public ScheduleLocalEntriesTask(Cache<K, V> cache, Predicate<Map.Entry<? super K, ? super V>> filter, Scheduler<I, M> scheduler) {
this.cache = cache;
this.filter = filter;
this.scheduler = scheduler;
}
@Override
public void accept(Locality oldLocality, Locality newLocality) {
// Iterate over local entries, including any cache stores to include entries that may be passivated/invalidated
try (Stream<Map.Entry<K, V>> stream = this.cache.getAdvancedCache().withFlags(Flag.CACHE_MODE_LOCAL).entrySet().stream().filter(this.filter)) {
Iterator<Map.Entry<K, V>> entries = stream.iterator();
while (entries.hasNext()) {
if (Thread.currentThread().isInterrupted()) break;
Map.Entry<K, V> entry = entries.next();
K key = entry.getKey();
// If we are the new primary owner of this bean then schedule expiration of this bean locally
if (!oldLocality.isLocal(key) && newLocality.isLocal(key)) {
this.scheduler.schedule(key.getId(), entry.getValue());
}
}
}
}
}