/*
* 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.wildfly.clustering.server.registry;
import java.util.Collections;
import java.util.Map;
import org.wildfly.clustering.group.Group;
import org.wildfly.clustering.group.Node;
import org.wildfly.clustering.registry.Registry;
/**
* Non-clustered {@link Registry} implementation.
* @author Paul Ferraro
* @param <K> key type
* @param <V> value type
*/
public class LocalRegistry<K, V> implements Registry<K, V> {
private final Group group;
private final Runnable closeTask;
private volatile Map.Entry<K, V> entry;
public LocalRegistry(Group group, Map.Entry<K, V> entry, Runnable closeTask) {
this.group = group;
this.closeTask = closeTask;
this.entry = entry;
}
@Override
public Group getGroup() {
return this.group;
}
@Override
public void addListener(Registry.Listener<K, V> listener) {
// if there are no remote nodes, any registered listener would never get triggered
}
@Override
public void removeListener(Registry.Listener<K, V> listener) {
// if there are no remote nodes, any registered listener would never get triggered
}
@Override
public Map<K, V> getEntries() {
Map.Entry<K, V> entry = this.entry;
return (entry != null) ? Collections.singletonMap(entry.getKey(), entry.getValue()) : Collections.emptyMap();
}
@Override
public Map.Entry<K, V> getEntry(Node node) {
return this.entry;
}
@Override
public void close() {
this.entry = null;
this.closeTask.run();
}
}