001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.geronimo.kernel.util;
018
019 import java.io.IOException;
020 import java.io.InputStream;
021
022 import org.apache.geronimo.kernel.Kernel;
023 import org.apache.geronimo.kernel.KernelFactory;
024 import org.apache.geronimo.kernel.config.ConfigurationUtil;
025
026 /**
027 *
028 * @version $Rev: 706640 $ $Date: 2008-10-21 14:44:05 +0000 (Tue, 21 Oct 2008) $
029 */
030 public class MainConfigurationBootstrapper {
031
032 public static void main(String[] args) {
033 int status = main(new MainConfigurationBootstrapper(), args);
034 System.exit(status);
035 }
036
037 public static int main(MainConfigurationBootstrapper bootstrapper, Object opaque) {
038 Main main = bootstrapper.getMain(MainConfigurationBootstrapper.class.getClassLoader());
039
040 int exitCode;
041 ClassLoader oldTCCL = Thread.currentThread().getContextClassLoader();
042 try {
043 ClassLoader newTCCL = main.getClass().getClassLoader();
044 Thread.currentThread().setContextClassLoader(newTCCL);
045 exitCode = main.execute(opaque);
046 } finally {
047 Thread.currentThread().setContextClassLoader(oldTCCL);
048 }
049 return exitCode;
050 }
051
052 protected Kernel kernel;
053
054 public Main getMain(ClassLoader classLoader) {
055 try {
056 bootKernel();
057 loadBootConfiguration(classLoader);
058 loadPersistentConfigurations();
059 return getMain();
060 } catch (Exception e) {
061 if (null != kernel) {
062 kernel.shutdown();
063 }
064 e.printStackTrace();
065 System.exit(1);
066 throw new AssertionError();
067 }
068 }
069
070 public void bootKernel() throws Exception {
071 kernel = KernelFactory.newInstance().createKernel("MainBootstrapper");
072 kernel.boot();
073
074 Runtime.getRuntime().addShutdownHook(new Thread("MainBootstrapper shutdown thread") {
075 public void run() {
076 kernel.shutdown();
077 }
078 });
079 }
080
081 public void loadBootConfiguration(ClassLoader classLoader) throws Exception {
082 InputStream in = classLoader.getResourceAsStream("META-INF/config.ser");
083 try {
084 ConfigurationUtil.loadBootstrapConfiguration(kernel, in, classLoader, true);
085 } finally {
086 if (in != null) {
087 try {
088 in.close();
089 } catch (IOException ignored) {
090 // ignored
091 }
092 }
093 }
094 }
095
096 public void loadPersistentConfigurations() throws Exception {
097 }
098
099 public Main getMain() throws Exception {
100 return (Main) kernel.getGBean(Main.class);
101 }
102
103 public Kernel getKernel() {
104 return kernel;
105 }
106
107 }