| /** |
| * 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.hadoop.yarn.server.router.webapp; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.List; |
| |
| /** |
| * Helper class to start a new process. |
| */ |
| public class JavaProcess { |
| |
| private Process process = null; |
| |
| public JavaProcess(Class<?> clazz) throws IOException, InterruptedException { |
| this(clazz, null); |
| } |
| |
| public JavaProcess(Class<?> clazz, List<String> addClasspaths) |
| throws IOException, InterruptedException { |
| String javaHome = System.getProperty("java.home"); |
| String javaBin = |
| javaHome + File.separator + "bin" + File.separator + "java"; |
| String classpath = System.getProperty("java.class.path"); |
| classpath = classpath.concat("./src/test/resources"); |
| if (addClasspaths != null) { |
| for (String addClasspath : addClasspaths) { |
| classpath = classpath.concat(File.pathSeparatorChar + addClasspath); |
| } |
| } |
| String className = clazz.getCanonicalName(); |
| ProcessBuilder builder = |
| new ProcessBuilder(javaBin, "-cp", classpath, className); |
| builder.inheritIO(); |
| process = builder.start(); |
| } |
| |
| public void stop() throws InterruptedException { |
| if (process != null) { |
| process.destroy(); |
| process.waitFor(); |
| process.exitValue(); |
| } |
| } |
| |
| } |