com.alipay.sofa.ark.bootstrap.MainMethodRunner Maven / Gradle / Ivy
/*
* 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 com.alipay.sofa.ark.bootstrap;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
/**
* Utility class that is used to call a main method. The class
* containing the main method is loaded using the thread context class loader.
*
* @author qilong.zql
* @since 0.1.0
*/
public class MainMethodRunner {
private final String mainClassName;
private final String[] args;
private final Map envs;
/**
* Create a new {@link MainMethodRunner} instance.
* @param mainClass the main class
* @param args incoming arguments
*/
public MainMethodRunner(String mainClass, String[] args, Map envs) {
this.mainClassName = mainClass;
this.args = (args == null ? new String[] {} : args.clone());
this.envs = envs == null ? new HashMap<>() : envs;
}
public Object run() throws Exception {
Class mainClass = Thread.currentThread().getContextClassLoader()
.loadClass(this.mainClassName);
Method mainMethod = mainClass.getDeclaredMethod("main", String[].class);
// TODO: add envs into the tenant of jdk
return mainMethod.invoke(null, new Object[] { this.args });
}
}