/*
* JBoss, Home of Professional Open Source.
* Copyright 2014, 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.test.clustering;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import javax.ejb.Remote;
import javax.ejb.Stateless;
import org.infinispan.Cache;
import org.infinispan.notifications.Listener;
import org.infinispan.notifications.cachelistener.annotation.TopologyChanged;
import org.infinispan.notifications.cachelistener.event.TopologyChangedEvent;
import org.infinispan.statetransfer.StateTransferManager;
import org.infinispan.topology.CacheTopology;
import org.jboss.as.clustering.msc.ServiceContainerHelper;
import org.jboss.as.server.CurrentServiceContainer;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.ServiceRegistry;
import org.wildfly.clustering.infinispan.spi.InfinispanCacheRequirement;
/**
* EJB that establishes a stable topology.
* @author Paul Ferraro
*/
@Stateless
@Remote(TopologyChangeListener.class)
@Listener(sync = false)
public class TopologyChangeListenerBean implements TopologyChangeListener {
@Override
public void establishTopology(String containerName, String cacheName, long timeout, String... nodes) throws InterruptedException {
Set<String> expectedMembers = Stream.of(nodes).sorted().collect(Collectors.toSet());
ServiceRegistry registry = CurrentServiceContainer.getServiceContainer();
ServiceName name = ServiceName.parse(InfinispanCacheRequirement.CACHE.resolve(containerName, cacheName));
Cache<?, ?> cache = ServiceContainerHelper.findValue(registry, name);
if (cache == null) {
throw new IllegalStateException(String.format("Cache %s not found", name));
}
cache.addListener(this);
try
{
long start = System.currentTimeMillis();
long now = start;
long endTime = start + timeout;
synchronized (this) {
StateTransferManager transfer = cache.getAdvancedCache().getComponentRegistry().getStateTransferManager();
CacheTopology topology = transfer.getCacheTopology();
Set<String> members = getMembers(topology);
while (!expectedMembers.equals(members)) {
System.out.println(String.format("%s != %s, waiting for a topology change event. Current topology id = %d", expectedMembers, members, topology.getTopologyId()));
this.wait(endTime - now);
now = System.currentTimeMillis();
if (now >= endTime) {
throw new InterruptedException(String.format("Cache %s/%s failed to establish view %s within %d ms. Current view is: %s", containerName, cacheName, expectedMembers, timeout, members));
}
topology = transfer.getCacheTopology();
members = getMembers(topology);
}
System.out.println(String.format("Cache %s/%s successfully established view %s within %d ms. Topology id = %d", containerName, cacheName, expectedMembers, now - start, topology.getTopologyId()));
}
} finally {
cache.removeListener(this);
}
}
private static Set<String> getMembers(CacheTopology topology) {
return topology.getCurrentCH().getMembers().stream().map(address -> address.toString()).sorted().collect(Collectors.toSet());
}
@TopologyChanged
public void topologyChanged(TopologyChangedEvent<?, ?> event) {
if (!event.isPre()) {
synchronized (this) {
this.notify();
}
}
}
}