Source Code Cross Referenced for Bootstrap.java in  » Sevlet-Container » apache-tomcat-6.0.14 » org » apache » catalina » startup » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Sevlet Container » apache tomcat 6.0.14 » org.apache.catalina.startup 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


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:
018:        package org.apache.catalina.startup;
019:
020:        import java.io.File;
021:        import java.lang.reflect.Method;
022:        import java.net.MalformedURLException;
023:        import java.net.URL;
024:        import java.util.ArrayList;
025:        import java.util.StringTokenizer;
026:
027:        import javax.management.MBeanServer;
028:        import javax.management.MBeanServerFactory;
029:        import javax.management.ObjectName;
030:
031:        import org.apache.catalina.security.SecurityClassLoad;
032:        import org.apache.juli.logging.Log;
033:        import org.apache.juli.logging.LogFactory;
034:
035:        /**
036:         * Boostrap loader for Catalina.  This application constructs a class loader
037:         * for use in loading the Catalina internal classes (by accumulating all of the
038:         * JAR files found in the "server" directory under "catalina.home"), and
039:         * starts the regular execution of the container.  The purpose of this
040:         * roundabout approach is to keep the Catalina internal classes (and any
041:         * other classes they depend on, such as an XML parser) out of the system
042:         * class path and therefore not visible to application level classes.
043:         *
044:         * @author Craig R. McClanahan
045:         * @author Remy Maucherat
046:         * @version $Revision: 467222 $ $Date: 2006-10-24 05:17:11 +0200 (mar., 24 oct. 2006) $
047:         */
048:
049:        public final class Bootstrap {
050:
051:            private static Log log = LogFactory.getLog(Bootstrap.class);
052:
053:            // -------------------------------------------------------------- Constants
054:
055:            protected static final String CATALINA_HOME_TOKEN = "${catalina.home}";
056:            protected static final String CATALINA_BASE_TOKEN = "${catalina.base}";
057:
058:            // ------------------------------------------------------- Static Variables
059:
060:            /**
061:             * Daemon object used by main.
062:             */
063:            private static Bootstrap daemon = null;
064:
065:            // -------------------------------------------------------------- Variables
066:
067:            /**
068:             * Daemon reference.
069:             */
070:            private Object catalinaDaemon = null;
071:
072:            protected ClassLoader commonLoader = null;
073:            protected ClassLoader catalinaLoader = null;
074:            protected ClassLoader sharedLoader = null;
075:
076:            // -------------------------------------------------------- Private Methods
077:
078:            private void initClassLoaders() {
079:                try {
080:                    commonLoader = createClassLoader("common", null);
081:                    if (commonLoader == null) {
082:                        // no config file, default to this loader - we might be in a 'single' env.
083:                        commonLoader = this .getClass().getClassLoader();
084:                    }
085:                    catalinaLoader = createClassLoader("server", commonLoader);
086:                    sharedLoader = createClassLoader("shared", commonLoader);
087:                } catch (Throwable t) {
088:                    log.error("Class loader creation threw exception", t);
089:                    System.exit(1);
090:                }
091:            }
092:
093:            private ClassLoader createClassLoader(String name,
094:                    ClassLoader parent) throws Exception {
095:
096:                String value = CatalinaProperties.getProperty(name + ".loader");
097:                if ((value == null) || (value.equals("")))
098:                    return parent;
099:
100:                ArrayList repositoryLocations = new ArrayList();
101:                ArrayList repositoryTypes = new ArrayList();
102:                int i;
103:
104:                StringTokenizer tokenizer = new StringTokenizer(value, ",");
105:                while (tokenizer.hasMoreElements()) {
106:                    String repository = tokenizer.nextToken();
107:
108:                    // Local repository
109:                    boolean replace = false;
110:                    String before = repository;
111:                    while ((i = repository.indexOf(CATALINA_HOME_TOKEN)) >= 0) {
112:                        replace = true;
113:                        if (i > 0) {
114:                            repository = repository.substring(0, i)
115:                                    + getCatalinaHome()
116:                                    + repository.substring(i
117:                                            + CATALINA_HOME_TOKEN.length());
118:                        } else {
119:                            repository = getCatalinaHome()
120:                                    + repository.substring(CATALINA_HOME_TOKEN
121:                                            .length());
122:                        }
123:                    }
124:                    while ((i = repository.indexOf(CATALINA_BASE_TOKEN)) >= 0) {
125:                        replace = true;
126:                        if (i > 0) {
127:                            repository = repository.substring(0, i)
128:                                    + getCatalinaBase()
129:                                    + repository.substring(i
130:                                            + CATALINA_BASE_TOKEN.length());
131:                        } else {
132:                            repository = getCatalinaBase()
133:                                    + repository.substring(CATALINA_BASE_TOKEN
134:                                            .length());
135:                        }
136:                    }
137:                    if (replace && log.isDebugEnabled())
138:                        log.debug("Expanded " + before + " to " + replace);
139:
140:                    // Check for a JAR URL repository
141:                    try {
142:                        URL url = new URL(repository);
143:                        repositoryLocations.add(repository);
144:                        repositoryTypes.add(ClassLoaderFactory.IS_URL);
145:                        continue;
146:                    } catch (MalformedURLException e) {
147:                        // Ignore
148:                    }
149:
150:                    if (repository.endsWith("*.jar")) {
151:                        repository = repository.substring(0, repository
152:                                .length()
153:                                - "*.jar".length());
154:                        repositoryLocations.add(repository);
155:                        repositoryTypes.add(ClassLoaderFactory.IS_GLOB);
156:                    } else if (repository.endsWith(".jar")) {
157:                        repositoryLocations.add(repository);
158:                        repositoryTypes.add(ClassLoaderFactory.IS_JAR);
159:                    } else {
160:                        repositoryLocations.add(repository);
161:                        repositoryTypes.add(ClassLoaderFactory.IS_DIR);
162:                    }
163:                }
164:
165:                String[] locations = (String[]) repositoryLocations
166:                        .toArray(new String[0]);
167:                Integer[] types = (Integer[]) repositoryTypes
168:                        .toArray(new Integer[0]);
169:
170:                ClassLoader classLoader = ClassLoaderFactory.createClassLoader(
171:                        locations, types, parent);
172:
173:                // Retrieving MBean server
174:                MBeanServer mBeanServer = null;
175:                if (MBeanServerFactory.findMBeanServer(null).size() > 0) {
176:                    mBeanServer = (MBeanServer) MBeanServerFactory
177:                            .findMBeanServer(null).get(0);
178:                } else {
179:                    mBeanServer = MBeanServerFactory.createMBeanServer();
180:                }
181:
182:                // Register the server classloader
183:                ObjectName objectName = new ObjectName(
184:                        "Catalina:type=ServerClassLoader,name=" + name);
185:                mBeanServer.registerMBean(classLoader, objectName);
186:
187:                return classLoader;
188:
189:            }
190:
191:            /**
192:             * Initialize daemon.
193:             */
194:            public void init() throws Exception {
195:
196:                // Set Catalina path
197:                setCatalinaHome();
198:                setCatalinaBase();
199:
200:                initClassLoaders();
201:
202:                Thread.currentThread().setContextClassLoader(catalinaLoader);
203:
204:                SecurityClassLoad.securityClassLoad(catalinaLoader);
205:
206:                // Load our startup class and call its process() method
207:                if (log.isDebugEnabled())
208:                    log.debug("Loading startup class");
209:                Class startupClass = catalinaLoader
210:                        .loadClass("org.apache.catalina.startup.Catalina");
211:                Object startupInstance = startupClass.newInstance();
212:
213:                // Set the shared extensions class loader
214:                if (log.isDebugEnabled())
215:                    log.debug("Setting startup class properties");
216:                String methodName = "setParentClassLoader";
217:                Class paramTypes[] = new Class[1];
218:                paramTypes[0] = Class.forName("java.lang.ClassLoader");
219:                Object paramValues[] = new Object[1];
220:                paramValues[0] = sharedLoader;
221:                Method method = startupInstance.getClass().getMethod(
222:                        methodName, paramTypes);
223:                method.invoke(startupInstance, paramValues);
224:
225:                catalinaDaemon = startupInstance;
226:
227:            }
228:
229:            /**
230:             * Load daemon.
231:             */
232:            private void load(String[] arguments) throws Exception {
233:
234:                // Call the load() method
235:                String methodName = "load";
236:                Object param[];
237:                Class paramTypes[];
238:                if (arguments == null || arguments.length == 0) {
239:                    paramTypes = null;
240:                    param = null;
241:                } else {
242:                    paramTypes = new Class[1];
243:                    paramTypes[0] = arguments.getClass();
244:                    param = new Object[1];
245:                    param[0] = arguments;
246:                }
247:                Method method = catalinaDaemon.getClass().getMethod(methodName,
248:                        paramTypes);
249:                if (log.isDebugEnabled())
250:                    log.debug("Calling startup class " + method);
251:                method.invoke(catalinaDaemon, param);
252:
253:            }
254:
255:            // ----------------------------------------------------------- Main Program
256:
257:            /**
258:             * Load the Catalina daemon.
259:             */
260:            public void init(String[] arguments) throws Exception {
261:
262:                init();
263:                load(arguments);
264:
265:            }
266:
267:            /**
268:             * Start the Catalina daemon.
269:             */
270:            public void start() throws Exception {
271:                if (catalinaDaemon == null)
272:                    init();
273:
274:                Method method = catalinaDaemon.getClass().getMethod("start",
275:                        (Class[]) null);
276:                method.invoke(catalinaDaemon, (Object[]) null);
277:
278:            }
279:
280:            /**
281:             * Stop the Catalina Daemon.
282:             */
283:            public void stop() throws Exception {
284:
285:                Method method = catalinaDaemon.getClass().getMethod("stop",
286:                        (Class[]) null);
287:                method.invoke(catalinaDaemon, (Object[]) null);
288:
289:            }
290:
291:            /**
292:             * Stop the standlone server.
293:             */
294:            public void stopServer() throws Exception {
295:
296:                Method method = catalinaDaemon.getClass().getMethod(
297:                        "stopServer", (Class[]) null);
298:                method.invoke(catalinaDaemon, (Object[]) null);
299:
300:            }
301:
302:            /**
303:             * Stop the standlone server.
304:             */
305:            public void stopServer(String[] arguments) throws Exception {
306:
307:                Object param[];
308:                Class paramTypes[];
309:                if (arguments == null || arguments.length == 0) {
310:                    paramTypes = null;
311:                    param = null;
312:                } else {
313:                    paramTypes = new Class[1];
314:                    paramTypes[0] = arguments.getClass();
315:                    param = new Object[1];
316:                    param[0] = arguments;
317:                }
318:                Method method = catalinaDaemon.getClass().getMethod(
319:                        "stopServer", paramTypes);
320:                method.invoke(catalinaDaemon, param);
321:
322:            }
323:
324:            /**
325:             * Set flag.
326:             */
327:            public void setAwait(boolean await) throws Exception {
328:
329:                Class paramTypes[] = new Class[1];
330:                paramTypes[0] = Boolean.TYPE;
331:                Object paramValues[] = new Object[1];
332:                paramValues[0] = new Boolean(await);
333:                Method method = catalinaDaemon.getClass().getMethod("setAwait",
334:                        paramTypes);
335:                method.invoke(catalinaDaemon, paramValues);
336:
337:            }
338:
339:            public boolean getAwait() throws Exception {
340:                Class paramTypes[] = new Class[0];
341:                Object paramValues[] = new Object[0];
342:                Method method = catalinaDaemon.getClass().getMethod("getAwait",
343:                        paramTypes);
344:                Boolean b = (Boolean) method
345:                        .invoke(catalinaDaemon, paramValues);
346:                return b.booleanValue();
347:            }
348:
349:            /**
350:             * Destroy the Catalina Daemon.
351:             */
352:            public void destroy() {
353:
354:                // FIXME
355:
356:            }
357:
358:            /**
359:             * Main method, used for testing only.
360:             *
361:             * @param args Command line arguments to be processed
362:             */
363:            public static void main(String args[]) {
364:
365:                if (daemon == null) {
366:                    daemon = new Bootstrap();
367:                    try {
368:                        daemon.init();
369:                    } catch (Throwable t) {
370:                        t.printStackTrace();
371:                        return;
372:                    }
373:                }
374:
375:                try {
376:                    String command = "start";
377:                    if (args.length > 0) {
378:                        command = args[args.length - 1];
379:                    }
380:
381:                    if (command.equals("startd")) {
382:                        args[0] = "start";
383:                        daemon.load(args);
384:                        daemon.start();
385:                    } else if (command.equals("stopd")) {
386:                        args[0] = "stop";
387:                        daemon.stop();
388:                    } else if (command.equals("start")) {
389:                        daemon.setAwait(true);
390:                        daemon.load(args);
391:                        daemon.start();
392:                    } else if (command.equals("stop")) {
393:                        daemon.stopServer(args);
394:                    } else {
395:                        log.warn("Bootstrap: command \"" + command
396:                                + "\" does not exist.");
397:                    }
398:                } catch (Throwable t) {
399:                    t.printStackTrace();
400:                }
401:
402:            }
403:
404:            public void setCatalinaHome(String s) {
405:                System.setProperty("catalina.home", s);
406:            }
407:
408:            public void setCatalinaBase(String s) {
409:                System.setProperty("catalina.base", s);
410:            }
411:
412:            /**
413:             * Set the <code>catalina.base</code> System property to the current
414:             * working directory if it has not been set.
415:             */
416:            private void setCatalinaBase() {
417:
418:                if (System.getProperty("catalina.base") != null)
419:                    return;
420:                if (System.getProperty("catalina.home") != null)
421:                    System.setProperty("catalina.base", System
422:                            .getProperty("catalina.home"));
423:                else
424:                    System.setProperty("catalina.base", System
425:                            .getProperty("user.dir"));
426:
427:            }
428:
429:            /**
430:             * Set the <code>catalina.home</code> System property to the current
431:             * working directory if it has not been set.
432:             */
433:            private void setCatalinaHome() {
434:
435:                if (System.getProperty("catalina.home") != null)
436:                    return;
437:                File bootstrapJar = new File(System.getProperty("user.dir"),
438:                        "bootstrap.jar");
439:                if (bootstrapJar.exists()) {
440:                    try {
441:                        System.setProperty("catalina.home", (new File(System
442:                                .getProperty("user.dir"), ".."))
443:                                .getCanonicalPath());
444:                    } catch (Exception e) {
445:                        // Ignore
446:                        System.setProperty("catalina.home", System
447:                                .getProperty("user.dir"));
448:                    }
449:                } else {
450:                    System.setProperty("catalina.home", System
451:                            .getProperty("user.dir"));
452:                }
453:
454:            }
455:
456:            /**
457:             * Get the value of the catalina.home environment variable.
458:             */
459:            public static String getCatalinaHome() {
460:                return System.getProperty("catalina.home", System
461:                        .getProperty("user.dir"));
462:            }
463:
464:            /**
465:             * Get the value of the catalina.base environment variable.
466:             */
467:            public static String getCatalinaBase() {
468:                return System.getProperty("catalina.base", getCatalinaHome());
469:            }
470:
471:        }
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