2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.controlloop.actorServiceProvider;
23 import java.util.Iterator;
24 import java.util.ServiceLoader;
26 import org.onap.policy.controlloop.actorServiceProvider.spi.Actor;
27 import com.google.common.collect.ImmutableList;
29 public class ActorService {
31 private static ActorService service;
33 private ServiceLoader<Actor> loader;
35 private ActorService() {
36 loader = ServiceLoader.load(Actor.class);
39 public static synchronized ActorService getInstance() {
40 if (service == null) {
41 service = new ActorService();
46 public ImmutableList<Actor> actors() {
47 Iterator<Actor> iter = loader.iterator();
48 System.out.println("returning actors");
49 while (iter.hasNext()) {
50 System.out.println("Got " + iter.next().actor());
53 return ImmutableList.copyOf(loader.iterator());