org.rzo.yajsw.app.WrapperManagerProxy Maven / Gradle / Ivy

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YAJSW is a java centric implementation of the java service wrapper by tanuki (JSW). It aims at being mostly configuration compliant with the original. It should therefore be easy to switch from JSW to YAJSW.

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/* This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.  
 */
package org.rzo.yajsw.app;

import java.net.URL;

import org.rzo.yajsw.boot.WrapperClassLoader;
import org.rzo.yajsw.boot.WrapperLoader;

// TODO: Auto-generated Javadoc
/**
 * The Class WrapperMangerProxy.
 */
public class WrapperManagerProxy
{

	/** The wrapper class loader. */
	static ClassLoader	wrapperClassLoader;

	/**
	 * Gets the wrapper manager.
	 * 
	 * @param args
	 *            the args
	 * 
	 * @return the wrapper manager
	 */
	public static WrapperManager getWrapperManager(final String[] args)
	{
		wrapperClassLoader = getWrapperClassLoader();
		Class wrapperManagerClass;
		final WrapperManager wm;
		WrapperManager result = null;
		try
		{
			wrapperManagerClass = wrapperClassLoader.loadClass("org.rzo.yajsw.app.WrapperManagerImpl");
			wm = (WrapperManager) wrapperManagerClass.newInstance();
			wm.init(args, wrapperClassLoader);
			// start the wrapper manager in a separate thread
			// so application may start even if communication to controller
			// takes time

			new Thread(new Runnable()
			{

				public void run()
				{
					try
					{
						wm.start();
					}
					catch (Exception ex)
					{
						ex.printStackTrace();
					}
				}
			}, "yajsw.app.manager.start").start();
			// give the manager.start a chance.
			Thread.yield();
			result = wm;
			String preScript = System.getProperty("wrapper.app.pre_main.script");
			if (preScript != null & !"".equals(preScript))
			{
				//Logger logger = new MyLogger();
				//logger.addHandler(new ConsoleHandler());
				wm.executeScript(preScript, wrapperClassLoader);
			}

		}
		catch (Exception e1)
		{
			e1.printStackTrace();
		}

		return result;
	}

	/**
	 * Gets the wrapper class loader.
	 * 
	 * @return the wrapper class loader
	 */
	private static ClassLoader getWrapperClassLoader()
	{
		URL[] urlsArr = WrapperLoader.getWrapperClasspath("App", true);
		if (urlsArr == null)
			return Thread.currentThread().getContextClassLoader();
		return new WrapperClassLoader(urlsArr, ClassLoader.getSystemClassLoader());
	}

}