2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 - 2019 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.vid.model.aaiTree;
23 import org.apache.commons.proxy.Invoker;
24 import org.apache.commons.proxy.factory.javassist.JavassistProxyFactory;
25 import org.jetbrains.annotations.NotNull;
26 import org.onap.vid.exceptions.GenericUncheckedException;
28 public class FailureAAITreeNode extends AAITreeNode {
30 private static final Class[] classes = {AAITreeNode.class};
31 private static final JavassistProxyFactory proxyFactory = new JavassistProxyFactory(); // can proxy a class without an interface
33 private FailureAAITreeNode() {
34 // don't instantiate this class
38 Returns a new AAITreeNode instance that throws an exception when
39 invoking any of its methods
41 public static AAITreeNode of(Exception failureException) {
42 return (AAITreeNode) proxyFactory.createInvokerProxy(exceptionThrower(failureException), classes);
46 private static Invoker exceptionThrower(Exception exception) {
47 return (self, thisMethod, args) -> {
48 throw new GenericUncheckedException("AAI node fetching failed.", exception);