001 /*
002 * Copyright (C) 2010 eXo Platform SAS.
003 *
004 * This is free software; you can redistribute it and/or modify it
005 * under the terms of the GNU Lesser General Public License as
006 * published by the Free Software Foundation; either version 2.1 of
007 * the License, or (at your option) any later version.
008 *
009 * This software is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * You should have received a copy of the GNU Lesser General Public
015 * License along with this software; if not, write to the Free
016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018 */
019
020 package org.crsh.standalone;
021
022 import org.crsh.plugin.PluginContext;
023 import org.crsh.plugin.PluginLifeCycle;
024 import org.crsh.plugin.ServiceLoaderDiscovery;
025 import org.crsh.util.Utils;
026 import org.crsh.vfs.FS;
027 import org.crsh.vfs.Path;
028 import org.slf4j.Logger;
029 import org.slf4j.LoggerFactory;
030
031 import java.io.File;
032 import java.net.URL;
033 import java.net.URLClassLoader;
034 import java.util.Collections;
035 import java.util.List;
036 import java.util.Map;
037
038 /**
039 * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
040 * @version $Revision$
041 */
042 public class Bootstrap extends PluginLifeCycle {
043
044 /** . */
045 protected final Logger log = LoggerFactory.getLogger(getClass());
046
047 /** The mounted path on the file system. */
048 private List<File> cmds = Utils.newArrayList();
049
050 /** The mounted path on the file system. */
051 private List<File> confs = Utils.newArrayList();
052
053 /** The class path. */
054 private List<File> jars = Utils.newArrayList();
055
056 /** The base classloader. */
057 private ClassLoader baseLoader;
058
059 /** The attributes. */
060 private Map<String, ?> attributes;
061
062 public Bootstrap(ClassLoader baseLoader) throws NullPointerException {
063 if (baseLoader == null) {
064 throw new NullPointerException("No null base loader accepted");
065 }
066 this.baseLoader = baseLoader;
067 this.attributes = Collections.emptyMap();
068 }
069
070 public void setAttributes(Map<String, ?> attributes) {
071 this.attributes = attributes;
072 }
073
074 public Bootstrap addConfPath(File file) {
075 confs.add(file);
076 return this;
077 }
078
079 public Bootstrap addCmdPath(File file) {
080 cmds.add(file);
081 return this;
082 }
083
084 public Bootstrap addJarPath(File file) {
085 jars.add(file);
086 return this;
087 }
088
089 public void bootstrap() throws Exception {
090
091 // Compute the url classpath
092 URL[] urls = new URL[jars.size()];
093 for (int i = 0;i < urls.length;i++) {
094 urls[i] = jars.get(i).toURI().toURL();
095 }
096
097 // Create the classloader
098 URLClassLoader classLoader = new URLClassLoader(urls, baseLoader);
099
100 // Create the cmd file system
101 FS cmdFS = new FS();
102 for (File cmd : cmds) {
103 cmdFS.mount(cmd);
104 }
105
106 // Add the classloader
107 cmdFS.mount(classLoader, Path.get("/crash/commands/"));
108
109 // Create the conf file system
110 FS confFS = new FS();
111 for (File conf : confs) {
112 confFS.mount(conf);
113 }
114 confFS.mount(classLoader, Path.get("/crash/"));
115
116 // The service loader discovery
117 ServiceLoaderDiscovery discovery = new ServiceLoaderDiscovery(classLoader);
118
119 //
120 StringBuilder info = new StringBuilder("Booting crash with classpath=");
121 info.append(jars).append(" and mounts=[");
122 for (int i = 0;i < cmds.size();i++) {
123 if (i > 0) {
124 info.append(',');
125 }
126 info.append(cmds.get(i).getAbsolutePath());
127 }
128 info.append(']');
129 log.info(info.toString());
130
131 //
132 PluginContext context = new PluginContext(
133 discovery,
134 attributes,
135 cmdFS,
136 confFS,
137 classLoader);
138
139 //
140 context.refresh();
141
142 //
143 start(context);
144 }
145
146 public void shutdown() {
147 stop();
148 }
149 }