/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.uima.ducc.ws.server;
import java.util.Enumeration;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.uima.ducc.transport.event.OrchestratorStateDuccEvent;
import org.apache.uima.ducc.ws.IListenerOrchestrator;
public class DuccListeners {
private static DuccListeners duccListeners = new DuccListeners();
private static ConcurrentHashMap<IListenerOrchestrator,IListenerOrchestrator> mapListenerOrchestrator = new ConcurrentHashMap<IListenerOrchestrator,IListenerOrchestrator>();
public static DuccListeners getInstance() {
return duccListeners;
}
public void register(IListenerOrchestrator listenerOrchestrator) {
mapListenerOrchestrator.put(listenerOrchestrator, listenerOrchestrator);
}
public void unregister(IListenerOrchestrator listenerOrchestrator) {
mapListenerOrchestrator.remove(listenerOrchestrator);
}
public void update(OrchestratorStateDuccEvent duccEvent) {
Enumeration<IListenerOrchestrator> listeners = mapListenerOrchestrator.keys();
while(listeners.hasMoreElements()) {
IListenerOrchestrator listener = listeners.nextElement();
listener.update(duccEvent);
}
}
}