| /* |
| * 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.qpid.test.utils; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.junit.rules.ExternalResource; |
| |
| public class SystemPropertySetter extends ExternalResource |
| { |
| private Map<String, String> _storedProperties = new HashMap<>(); |
| |
| @Override |
| public synchronized void after() |
| { |
| _storedProperties.forEach(this::setProperty); |
| } |
| |
| public synchronized void setSystemProperty(final String name, final String value) |
| { |
| _storedProperties.putIfAbsent(name, System.getProperty(name)); |
| setProperty(name, value); |
| } |
| |
| private void setProperty(final String name, final String value) |
| { |
| if (value == null) |
| { |
| System.clearProperty(name); |
| } |
| else |
| { |
| System.setProperty(name, value); |
| } |
| } |
| } |