| /* |
| * 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.storm.utils.staticmocking; |
| |
| import org.apache.storm.utils.ServerConfigUtils; |
| |
| public class ServerConfigUtilsInstaller implements AutoCloseable { |
| |
| private ServerConfigUtils _oldInstance; |
| private ServerConfigUtils _curInstance; |
| |
| public ServerConfigUtilsInstaller(ServerConfigUtils instance) { |
| _oldInstance = ServerConfigUtils.setInstance(instance); |
| _curInstance = instance; |
| |
| System.out.println("DEBUG: instance changed: " + _curInstance); |
| } |
| |
| @Override |
| public void close() throws Exception { |
| if (ServerConfigUtils.setInstance(_oldInstance) != _curInstance) { |
| throw new IllegalStateException( |
| "Instances of this resource must be closed in reverse order of opening."); |
| } |
| } |
| } |