package org.infinispan.notifications.cachelistener.cluster;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.UUID;
import org.infinispan.Cache;
import org.infinispan.commons.marshall.AbstractExternalizer;
import org.infinispan.distexec.DistributedCallable;
import org.infinispan.marshall.core.Ids;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
/**
* This DistributedCallable is used to invoke a raised notification on the cluster listener that registered to listen
* for this event.
*
* @author wburns
* @since 7.0
*/
public class MultiClusterEventCallable<K, V> implements DistributedCallable<K, V, Void> {
private static final Log log = LogFactory.getLog(MultiClusterEventCallable.class);
private static final boolean trace = log.isTraceEnabled();
private transient ClusterCacheNotifier<K, V> clusterCacheNotifier;
private final Map<UUID, Collection<ClusterEvent<K, V>>> multiEvents;
public MultiClusterEventCallable(Map<UUID, Collection<ClusterEvent<K, V>>> events) {
this.multiEvents = events;
}
@Override
public Void call() throws Exception {
if (trace) {
log.tracef("Received multiple cluster event(s) %s", multiEvents);
}
for (Entry<UUID, Collection<ClusterEvent<K, V>>> entry : multiEvents.entrySet()) {
UUID identifier = entry.getKey();
Collection<ClusterEvent<K, V>> events = entry.getValue();
clusterCacheNotifier.notifyClusterListeners(events, identifier);
}
return null;
}
@Override
public void setEnvironment(Cache<K, V> cache, Set<K> inputKeys) {
this.clusterCacheNotifier = cache.getAdvancedCache().getComponentRegistry().getComponent(ClusterCacheNotifier.class);
for (Collection<? extends ClusterEvent<K, V>> events : multiEvents.values()) {
for (ClusterEvent<K, V> event : events) {
event.cache = cache;
}
}
}
public static class Externalizer extends AbstractExternalizer<MultiClusterEventCallable> {
@Override
public Set<Class<? extends MultiClusterEventCallable>> getTypeClasses() {
return Collections.singleton(MultiClusterEventCallable.class);
}
@Override
public void writeObject(ObjectOutput output, MultiClusterEventCallable object) throws IOException {
output.writeObject(object.multiEvents);
}
@Override
public MultiClusterEventCallable readObject(ObjectInput input) throws IOException, ClassNotFoundException {
return new MultiClusterEventCallable((Map<UUID, Collection<? extends ClusterEvent>>)input.readObject());
}
@Override
public Integer getId() {
return Ids.MULTI_CLUSTER_EVENT_CALLABLE;
}
}
}