001 /*
002 * Copyright (C) 2012 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
029 import java.io.File;
030 import java.net.URL;
031 import java.net.URLClassLoader;
032 import java.util.Collections;
033 import java.util.List;
034 import java.util.Map;
035 import java.util.logging.Level;
036 import java.util.logging.Logger;
037
038 public class Bootstrap extends PluginLifeCycle {
039
040 /** . */
041 protected final Logger log = Logger.getLogger(getClass().getName());
042
043 /** The mounted path on the file system. */
044 private List<File> cmds = Utils.newArrayList();
045
046 /** The mounted path on the file system. */
047 private List<File> confs = Utils.newArrayList();
048
049 /** The class path. */
050 private List<File> jars = Utils.newArrayList();
051
052 /** The base classloader. */
053 private ClassLoader baseLoader;
054
055 /** The attributes. */
056 private Map<String, Object> attributes;
057
058 public Bootstrap(ClassLoader baseLoader) throws NullPointerException {
059 if (baseLoader == null) {
060 throw new NullPointerException("No null base loader accepted");
061 }
062 this.baseLoader = baseLoader;
063 this.attributes = Collections.emptyMap();
064 }
065
066 public void setAttributes(Map<String, Object> attributes) {
067 this.attributes = attributes;
068 }
069
070 public Bootstrap addConfPath(File file) {
071 confs.add(file);
072 return this;
073 }
074
075 public Bootstrap addCmdPath(File file) {
076 cmds.add(file);
077 return this;
078 }
079
080 public Bootstrap addJarPath(File file) {
081 jars.add(file);
082 return this;
083 }
084
085 public void bootstrap() throws Exception {
086
087 // Compute the url classpath
088 URL[] urls = new URL[jars.size()];
089 for (int i = 0;i < urls.length;i++) {
090 urls[i] = jars.get(i).toURI().toURL();
091 }
092
093 // Create the classloader
094 URLClassLoader classLoader = new URLClassLoader(urls, baseLoader);
095
096 // Create the cmd file system
097 FS cmdFS = new FS();
098 for (File cmd : cmds) {
099 cmdFS.mount(cmd);
100 }
101
102 // Add the classloader
103 cmdFS.mount(classLoader, Path.get("/crash/commands/"));
104
105 // Create the conf file system
106 FS confFS = new FS();
107 for (File conf : confs) {
108 confFS.mount(conf);
109 }
110 confFS.mount(classLoader, Path.get("/crash/"));
111
112 // The service loader discovery
113 ServiceLoaderDiscovery discovery = new ServiceLoaderDiscovery(classLoader);
114
115 //
116 StringBuilder info = new StringBuilder("Booting crash with classpath=");
117 info.append(jars).append(" and mounts=[");
118 for (int i = 0;i < cmds.size();i++) {
119 if (i > 0) {
120 info.append(',');
121 }
122 info.append(cmds.get(i).getAbsolutePath());
123 }
124 info.append(']');
125 log.log(Level.INFO, info.toString());
126
127 //
128 PluginContext context = new PluginContext(
129 discovery,
130 attributes,
131 cmdFS,
132 confFS,
133 classLoader);
134
135 //
136 context.refresh();
137
138 //
139 start(context);
140 }
141
142 public void shutdown() {
143 stop();
144 }
145 }