2 * ================================================================================
3 * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 * ============LICENSE_END=========================================================
20 package org.onap.dcae.utils.eelf.logger.logback.resolver;
22 import java.util.Arrays;
23 import java.util.List;
26 * A composite property resolver can look under different resolvers in order of given property resolvers
28 * @author Rajiv Singla
30 public class CompositePropertyResolver implements PropertyResolver {
32 private static final long serialVersionUID = 1L;
34 private final List<PropertyResolver> propertyResolvers;
36 public CompositePropertyResolver(PropertyResolver... propertyResolvers) {
37 this.propertyResolvers = Arrays.asList(propertyResolvers);
41 public String resolve(final List<String> propertyNames) {
42 // resolver property in given resolvers in the same order they are defined
43 for (PropertyResolver propertyResolver : propertyResolvers) {
44 final String propertyValue = propertyResolver.resolve(propertyNames);
45 if (propertyValue != null) {