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.openecomp.mso.client;
23 import java.util.Iterator;
24 import java.util.ServiceLoader;
26 public class RestPropertiesLoader {
28 private final ServiceLoader<RestProperties> services;
29 private RestPropertiesLoader() {
30 services = ServiceLoader.load(RestProperties.class);
33 private static class Helper {
34 private static final RestPropertiesLoader INSTANCE = new RestPropertiesLoader();
37 public static RestPropertiesLoader getInstance() {
38 return Helper.INSTANCE;
41 public <T> T getImpl(Class<? extends RestProperties> clazz) {
43 Iterator<RestProperties> propertyImpls = services.iterator();
45 while (propertyImpls.hasNext()) {
46 item = propertyImpls.next();
47 if (clazz.isAssignableFrom(item.getClass())) {