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.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 ClusterEventCallable<K, V> implements DistributedCallable<K, V, Void> {
private static final Log log = LogFactory.getLog(ClusterEventCallable.class);
private static final boolean trace = log.isTraceEnabled();
private transient ClusterCacheNotifier clusterCacheNotifier;
private final UUID identifier;
private final Collection<? extends ClusterEvent<K, V>> events;
public ClusterEventCallable(UUID identifier, ClusterEvent<K, V> event) {
this(identifier, Collections.singleton(event));
}
public ClusterEventCallable(UUID identifier, Collection<? extends ClusterEvent<K, V>> events) {
this.identifier = identifier;
this.events = events;
}
@Override
public Void call() throws Exception {
if (trace) {
log.tracef("Received cluster event(s) %s, notifying cluster listener with id %s", events, identifier);
}
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 (ClusterEvent event : events) {
event.cache = cache;
}
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder("ClusterEventCallable{");
sb.append("identifier=").append(identifier);
sb.append(", events=").append(events);
sb.append('}');
return sb.toString();
}
public static class Externalizer extends AbstractExternalizer<ClusterEventCallable> {
@Override
public Set<Class<? extends ClusterEventCallable>> getTypeClasses() {
return Collections.singleton(ClusterEventCallable.class);
}
@Override
public void writeObject(ObjectOutput output, ClusterEventCallable object) throws IOException {
output.writeObject(object.identifier);
output.writeObject(object.events);
}
@Override
public ClusterEventCallable readObject(ObjectInput input) throws IOException, ClassNotFoundException {
return new ClusterEventCallable((UUID)input.readObject(), (Collection<? extends ClusterEvent>)input.readObject());
}
@Override
public Integer getId() {
return Ids.CLUSTER_EVENT_CALLABLE;
}
}
}