/*
 * Copyright (C) 2007-2012 Argeo GmbH
 *
 * Licensed 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.argeo.osgi.boot;

import java.io.File;

import org.osgi.framework.BundleContext;
import org.osgi.framework.launch.Framework;

/** Monitors the runtime and can shut it down. */
public class AdminThread extends Thread {
	public final static String PROP_ARGEO_OSGI_SHUTDOWN_FILE = "argeo.osgi.shutdownFile";
	private File shutdownFile;
	private final BundleContext bundleContext;

	public AdminThread(BundleContext bundleContext) {
		super("OSGi Boot Admin");
		this.bundleContext = bundleContext;
		if (System.getProperty(PROP_ARGEO_OSGI_SHUTDOWN_FILE) != null) {
			shutdownFile = new File(
					System.getProperty(PROP_ARGEO_OSGI_SHUTDOWN_FILE));
			if (!shutdownFile.exists()) {
				shutdownFile = null;
				OsgiBootUtils.warn("Shutdown file " + shutdownFile
						+ " not found, feature deactivated");
			}
		}
	}

	public void run() {
		if (shutdownFile != null) {
			// wait for file to be removed
			while (shutdownFile.exists()) {
				try {
					Thread.sleep(1000);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}

			Framework framework = (Framework) bundleContext.getBundle(0);
			try {
				// shutdown framework
				framework.stop();
				// wait 10 mins for shutdown
				framework.waitForStop(10 * 60 * 1000);
				// close VM
				System.exit(0);
			} catch (Exception e) {
				e.printStackTrace();
				System.exit(1);
			}
		}
	}
}