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Java Source Code / Java Documentation » J2EE » ow2 easybeans » org.ow2.easybeans.server 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * EasyBeans
003:         * Copyright (C) 2006-2007 Bull S.A.S.
004:         * Contact: easybeans@ow2.org
005:         *
006:         * This library is free software; you can redistribute it and/or
007:         * modify it under the terms of the GNU Lesser General Public
008:         * License as published by the Free Software Foundation; either
009:         * version 2.1 of the License, or any later version.
010:         *
011:         * This library is distributed in the hope that it will be useful,
012:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014:         * Lesser General Public License for more details.
015:         *
016:         * You should have received a copy of the GNU Lesser General Public
017:         * License along with this library; if not, write to the Free Software
018:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
019:         * USA
020:         *
021:         * --------------------------------------------------------------------------
022:         * $Id: Embedded.java 2137 2007-12-10 18:26:53Z benoitf $
023:         * --------------------------------------------------------------------------
024:         */package org.ow2.easybeans.server;
025:
026:        import java.io.File;
027:        import java.net.URL;
028:        import java.rmi.RemoteException;
029:        import java.util.ArrayList;
030:        import java.util.List;
031:        import java.util.ListIterator;
032:        import java.util.Map;
033:        import java.util.concurrent.ConcurrentHashMap;
034:
035:        import javax.naming.Context;
036:        import javax.naming.InitialContext;
037:        import javax.naming.NamingException;
038:
039:        import org.ow2.easybeans.api.EZBContainer;
040:        import org.ow2.easybeans.api.EZBContainerConfig;
041:        import org.ow2.easybeans.api.EZBServer;
042:        import org.ow2.easybeans.api.EmbeddedManager;
043:        import org.ow2.easybeans.component.ComponentManager;
044:        import org.ow2.easybeans.component.Components;
045:        import org.ow2.easybeans.component.api.EZBComponent;
046:        import org.ow2.easybeans.component.api.EZBComponentException;
047:        import org.ow2.easybeans.component.itf.RegistryComponent;
048:        import org.ow2.easybeans.container.JContainer3;
049:        import org.ow2.easybeans.container.JContainerConfig;
050:        import org.ow2.easybeans.deployer.IRemoteDeployer;
051:        import org.ow2.easybeans.deployer.RemoteDeployer;
052:        import org.ow2.easybeans.jmx.CommonsModelerException;
053:        import org.ow2.easybeans.jmx.CommonsModelerHelper;
054:        import org.ow2.easybeans.jmx.JMXRemoteException;
055:        import org.ow2.easybeans.jmx.JMXRemoteHelper;
056:        import org.ow2.easybeans.jmx.MBeanServerException;
057:        import org.ow2.easybeans.jmx.MBeanServerHelper;
058:        import org.ow2.easybeans.jmx.MBeansException;
059:        import org.ow2.easybeans.jmx.MBeansHelper;
060:        import org.ow2.easybeans.rpc.rmi.server.RMIServerRPC;
061:        import org.ow2.easybeans.rpc.rmi.server.RMIServerRPCImpl;
062:        import org.ow2.easybeans.security.jacc.PolicyProvider;
063:        import org.ow2.util.ee.deploy.api.archive.IArchive;
064:        import org.ow2.util.ee.deploy.api.deployer.DeployerException;
065:        import org.ow2.util.log.Log;
066:        import org.ow2.util.log.LogFactory;
067:
068:        /**
069:         * Allows to create an embedded EJB3 server.
070:         * @author Florent Benoit
071:         */
072:        public class Embedded implements  EZBServer {
073:
074:            /**
075:             * Default sleep value (for server loop).
076:             */
077:            private static final int SLEEP_VALUE = 10000;
078:
079:            /**
080:             * Core XML file (that will load Quartz component, etc).
081:             */
082:            public static final String CORE_XML_FILE = "org/ow2/easybeans/server/easybeans-core.xml";
083:
084:            /**
085:             * Default deployment directory.
086:             */
087:            public static final String DEFAULT_DEPLOY_DIRECTORY = "easybeans-deploy";
088:
089:            /**
090:             * Deprecated default deployment directory.
091:             */
092:            public static final String DEPRECATED_DEFAULT_DEPLOY_DIRECTORY = "ejb3s";
093:
094:            /**
095:             * Logger.
096:             */
097:            private static Log logger = LogFactory.getLog(Embedded.class);
098:
099:            /**
100:             * Internal (global) counter of all embedded instance created.
101:             */
102:            private static int counter = 0;
103:
104:            /**
105:             * ID of this embedded server.
106:             */
107:            private Integer id = null;
108:
109:            /**
110:             * Configuration of this server.
111:             */
112:            private ServerConfig serverConfig = null;
113:
114:            /**
115:             * Map of managed ejb3 containers.
116:             */
117:            private Map<String, EZBContainer> containers = null;
118:
119:            /**
120:             * Deployer instance.
121:             */
122:            private RemoteDeployer deployer = null;
123:
124:            /**
125:             * List of components that have been defined.
126:             */
127:            private Components components = null;
128:
129:            /**
130:             * Manager of components.
131:             */
132:            private ComponentManager componentManager = null;
133:
134:            /**
135:             * Server started ?
136:             */
137:            private boolean started = false;
138:
139:            /**
140:             * Monitor of the containers.
141:             */
142:            private ContainersMonitor monitor = null;
143:
144:            /**
145:             * Creates a new Embedded server.<br>
146:             * It will take default values of configuration.
147:             */
148:            public Embedded() {
149:                this .id = Integer.valueOf(counter++);
150:                this .containers = new ConcurrentHashMap<String, EZBContainer>();
151:                this .serverConfig = new ServerConfig();
152:
153:                // register to the list
154:                EmbeddedManager.addEmbedded(this );
155:
156:                // Init components
157:                this .components = new Components();
158:
159:                // Create component manager around components
160:                this .componentManager = new ComponentManager(components);
161:            }
162:
163:            /**
164:             * Starts the EJB3 server.
165:             * @throws EmbeddedException if there is a failure while starting the
166:             *         server.
167:             */
168:            public void start() throws EmbeddedException {
169:                long tStart = System.currentTimeMillis();
170:
171:                // Add default components like Quartz Timer service, etc.
172:                if (serverConfig.addEmbeddedComponents()) {
173:                    // Get URL
174:                    URL xmlConfigurationURL = Thread.currentThread()
175:                            .getContextClassLoader().getResource(CORE_XML_FILE);
176:
177:                    // Configure the given embedded instance (= this)
178:                    try {
179:                        EmbeddedConfigurator.init(this , xmlConfigurationURL);
180:                    } catch (EmbeddedException e) {
181:                        throw new EmbeddedException(
182:                                "Cannot add the core components on the embedded server",
183:                                e);
184:                    }
185:                }
186:
187:                // Init JACC
188:                if (serverConfig.initJACC()) {
189:                    PolicyProvider.init();
190:                }
191:
192:                // configure
193:                configure();
194:
195:                if (serverConfig.isAutoConfigureComponents()) {
196:                    // Init components
197:                    try {
198:                        componentManager.initComponents();
199:                    } catch (EZBComponentException e) {
200:                        throw new EmbeddedException("Cannot init components", e);
201:                    }
202:
203:                    // Start components
204:                    try {
205:                        componentManager.startComponents();
206:                    } catch (EZBComponentException e) {
207:                        throw new EmbeddedException("Cannot start components",
208:                                e);
209:                    }
210:                }
211:
212:                if (serverConfig.isUsingNaming()) {
213:                    // url.pkg for java:
214:                    System.setProperty(Context.URL_PKG_PREFIXES,
215:                            "org.ow2.easybeans.naming.pkg");
216:                }
217:
218:                // set the deployer used for this component.
219:                try {
220:                    deployer = new RemoteDeployer(this );
221:                } catch (DeployerException e) {
222:                    throw new EmbeddedException(
223:                            "Cannot build a remote deployer.", e);
224:                }
225:
226:                MBeansHelper.getInstance().activate(
227:                        serverConfig.isUsingMBeans());
228:                if (serverConfig.isUsingMBeans()) {
229:
230:                    // init Modeler Registry
231:                    try {
232:                        CommonsModelerHelper.initRegistry();
233:                    } catch (CommonsModelerException e) {
234:                        throw new EmbeddedException("Cannot init MBean server",
235:                                e);
236:                    }
237:
238:                    // Start MBeanServer (if any)
239:                    try {
240:                        MBeanServerHelper.startMBeanServer();
241:                    } catch (MBeanServerException e) {
242:                        throw new EmbeddedException(
243:                                "Cannot start MBean server", e);
244:                    }
245:
246:                    if (serverConfig.isStartJMXConnector()) {
247:                        try {
248:                            JMXRemoteHelper
249:                                    .startConnector((RegistryComponent) this 
250:                                            .getComponent("org.ow2.easybeans.component.carol.CarolComponent"));
251:                        } catch (JMXRemoteException e) {
252:                            throw new EmbeddedException(
253:                                    "Cannot start JMX Remote connector", e);
254:                        }
255:                    }
256:
257:                    // register the Deployer
258:                    if (serverConfig.isRegisterDeployerMBean()) {
259:                        try {
260:                            MBeansHelper.getInstance().registerMBean(deployer);
261:                        } catch (MBeansException e) {
262:                            throw new EmbeddedException("Cannot init MBeans", e);
263:                        }
264:                    }
265:
266:                    // register the Server
267:                    if (serverConfig.isRegisterJ2EEServerMBean()) {
268:                        try {
269:                            MBeansHelper.getInstance().registerMBean(this );
270:                        } catch (MBeansException e) {
271:                            throw new EmbeddedException("Cannot init MBeans", e);
272:                        }
273:                    }
274:                }
275:
276:                // Bind the RPC object
277:                RMIServerRPC invoker = null;
278:                try {
279:                    invoker = new RMIServerRPCImpl(this );
280:                } catch (RemoteException e) {
281:                    throw new EmbeddedException("Cannot build RPC invoker", e);
282:                }
283:                try {
284:                    new InitialContext().rebind(RMIServerRPC.RPC_JNDI_NAME,
285:                            invoker);
286:                } catch (NamingException e) {
287:                    throw new EmbeddedException("Cannot bind the RPC invoker",
288:                            e);
289:                }
290:
291:                if (serverConfig.isDirectoryScanningEnabled()) {
292:                    if (serverConfig.isUsingOldDeployer()) {
293:                        // add a thread which monitor containers file
294:                        monitor = new ContainersMonitor(this );
295:                    } else {
296:                        // use the new one
297:                        monitor = new DirectoryDeployerMonitor(this );
298:                    }
299:                    monitor.init();
300:                }
301:
302:                logger.info("Embedded.start.startup", Version.getVersion(),
303:                        Long.valueOf(System.currentTimeMillis() - tStart));
304:                logger.debug("Embedded.start.created", Integer
305:                        .valueOf(containers.size()));
306:                if (serverConfig.isDirectoryScanningEnabled()) {
307:                    monitor.start();
308:                }
309:
310:                // It is started
311:                started = true;
312:
313:                if (serverConfig.shouldWait()) {
314:                    logger.info("Embedded.start.waiting");
315:                    while (true) {
316:                        try {
317:                            Thread.sleep(SLEEP_VALUE);
318:                        } catch (InterruptedException e) {
319:                            logger.error("Cannot sleep in the thread", e);
320:                        }
321:                    }
322:                }
323:            }
324:
325:            /**
326:             * Stops the EJB3 server.
327:             * @throws EmbeddedException if container cannot be stopped.
328:             */
329:            public synchronized void stop() throws EmbeddedException {
330:                // ensure started
331:                if (!started) {
332:                    throw new EmbeddedException(
333:                            "Cannot stop the server as it is not started.");
334:                }
335:
336:                // Stop the containers
337:                // Use a ListIterator to allow us to safely remove EZBContainers
338:                // from the List being processed.
339:                List<EZBContainer> containersList = new ArrayList<EZBContainer>(
340:                        this .containers.values());
341:                ListIterator<EZBContainer> li = containersList.listIterator();
342:                while (li.hasNext()) {
343:                    EZBContainer container = li.next();
344:                    container.stop();
345:                    removeContainer(container);
346:                }
347:
348:                if (serverConfig.isDirectoryScanningEnabled()) {
349:                    monitor.stopOrder();
350:                }
351:
352:                // Unregister MBeans
353:                if (serverConfig.isUsingMBeans()) {
354:
355:                    if (serverConfig.isStartJMXConnector()) {
356:                        // Stop the JMX Connector
357:                        try {
358:                            JMXRemoteHelper.stopConnector();
359:                        } catch (JMXRemoteException e) {
360:                            // Only log the Exception
361:                            logger.debug("Cannot stop JMX Remote connector", e);
362:                            // and continue ...
363:                        }
364:                    }
365:
366:                    // Unregister the Deployer
367:                    if (serverConfig.isRegisterDeployerMBean()) {
368:                        try {
369:                            MBeansHelper.getInstance()
370:                                    .unregisterMBean(deployer);
371:                        } catch (MBeansException e) {
372:                            // Only log the Exception
373:                            logger.error("Cannot unregister Deployer MBean", e);
374:                        }
375:                    }
376:
377:                    // Unregister the Server
378:                    if (serverConfig.isRegisterJ2EEServerMBean()) {
379:                        try {
380:                            MBeansHelper.getInstance().unregisterMBean(this );
381:                        } catch (MBeansException e) {
382:                            // Only log the Exception
383:                            logger.error("Cannot unregister Embedded MBean", e);
384:                        }
385:                    }
386:                }
387:
388:                // Unbind the RPCInvoker Remote Object
389:                try {
390:                    new InitialContext().unbind(RMIServerRPC.RPC_JNDI_NAME);
391:                } catch (NamingException e) {
392:                    // Only log the Exception
393:                    logger.error("Cannot unbind the RPC invoker", e);
394:                }
395:
396:                // Stop the components
397:                componentManager.stopComponents();
398:
399:                logger.info("Embedded.stop.stopped", Version.getVersion());
400:            }
401:
402:            /**
403:             * Sets the server configuration (not the components).
404:             * @param serverConfig the given configuration
405:             */
406:            public void setServerConfig(final ServerConfig serverConfig) {
407:                // check status
408:                if (started) {
409:                    throw new IllegalStateException(
410:                            "Cannot set the server configuration when server has been started.");
411:                }
412:                this .serverConfig = serverConfig;
413:            }
414:
415:            /**
416:             * Gets a container managed by this server.
417:             * @param id the container id.
418:             * @return the container if it is found, else null.
419:             */
420:            public EZBContainer getContainer(final String id) {
421:                return containers.get(id);
422:            }
423:
424:            /**
425:             * Gets a container managed by this server.
426:             * @param archive the archive used by the given container.
427:             * @return the container if it is found, else null.
428:             */
429:            public EZBContainer findContainer(final IArchive archive) {
430:                // Invalid archive
431:                if (archive == null) {
432:                    return null;
433:                }
434:                // Search a container for the given archive.
435:                for (EZBContainer container : containers.values()) {
436:                    if (archive.equals(container.getArchive())) {
437:                        return container;
438:                    }
439:                }
440:                return null;
441:            }
442:
443:            /**
444:             * Configure the server by using the given configuration.
445:             */
446:            private void configure() {
447:
448:                // get deploy directories
449:                List<File> deployDirectories = serverConfig
450:                        .getDeployDirectories();
451:
452:                // Check deploy directories
453:                for (File deployDirectory : deployDirectories) {
454:                    if (!deployDirectory.exists()) {
455:                        if (deployDirectory.mkdir()) {
456:                            logger.warn("Directory '"
457:                                    + deployDirectory.getAbsolutePath()
458:                                    + "' created.");
459:                        } else {
460:                            throw new IllegalStateException(
461:                                    "Cannot make directory '"
462:                                            + deployDirectory.getAbsolutePath()
463:                                            + "'.");
464:                        }
465:                    }
466:                }
467:
468:                // if deprecated path is found, add it
469:                if (deployDirectories.size() == 1) {
470:                    File deprecatedDir = new File(deployDirectories.get(0)
471:                            .getParentFile(),
472:                            DEPRECATED_DEFAULT_DEPLOY_DIRECTORY);
473:                    if (deprecatedDir.exists()) {
474:                        logger
475:                                .warn(
476:                                        "DEPRECATED directory ''{0}'' found. New deploy directory with the name ''{1}'' has to be used instead.",
477:                                        deprecatedDir, DEFAULT_DEPLOY_DIRECTORY);
478:                        serverConfig.getDeployDirectories().add(deprecatedDir);
479:                    }
480:                }
481:
482:                if (serverConfig.getDeployDirectories().size() > 0) {
483:                    logger.info(
484:                            "Using directories ''{0}'' as deploy directories",
485:                            deployDirectories);
486:                }
487:            }
488:
489:            /**
490:             * Creates and adds an ejb3 container to the managed container.
491:             * @param archive jar file or exploded archive.
492:             * @return the created container.
493:             */
494:            public EZBContainer createContainer(final IArchive archive) {
495:                EZBContainerConfig jConfig = new JContainerConfig(archive);
496:                jConfig.setEZBServer(this );
497:                EZBContainer container = new JContainer3(jConfig);
498:                addContainer(container);
499:
500:                return container;
501:            }
502:
503:            /**
504:             * Add an already created container.
505:             * @param container the EZBContainer to be added.
506:             */
507:            public void addContainer(final EZBContainer container) {
508:                // Add extensions
509:                callJContainerConfigExtensions(container.getConfiguration());
510:
511:                String id = container.getId();
512:                containers.put(id, container);
513:            }
514:
515:            /**
516:             * Remove a given container.
517:             * @param container the container to be removed.
518:             */
519:            public void removeContainer(final EZBContainer container) {
520:                containers.remove(container.getId());
521:
522:                logger.info("Container ''{0}'' removed", container.getArchive()
523:                        .getName());
524:            }
525:
526:            /**
527:             * Adapt the JContainerConfig for all
528:             * {@link EasyBeansConfigurationExtension}.
529:             * @param jcc the JContainerConfig to adapt.
530:             */
531:            private void callJContainerConfigExtensions(
532:                    final EZBContainerConfig jcc) {
533:
534:                for (EasyBeansConfigurationExtension extension : this .serverConfig
535:                        .getExtensionFactories()) {
536:                    try {
537:                        extension.configure(jcc);
538:                    } catch (Throwable t) {
539:                        // prevent malicious code to break everything ...
540:                        logger
541:                                .info(
542:                                        "Failed to configure JContainerConfig with {0}",
543:                                        extension.getClass().getName());
544:                    }
545:                }
546:            }
547:
548:            /**
549:             * @return the configuration of this server.
550:             */
551:            public ServerConfig getServerConfig() {
552:                return serverConfig;
553:            }
554:
555:            /**
556:             * @return the containers managed by this server.
557:             */
558:            public Map<String, EZBContainer> getContainers() {
559:                return containers;
560:            }
561:
562:            /**
563:             * Gets the id of this embedded server.
564:             * @return the id of this server.
565:             */
566:            public Integer getID() {
567:                return id;
568:            }
569:
570:            /**
571:             * @return the Remote deployer instance.
572:             */
573:            public IRemoteDeployer getDeployer() {
574:                return deployer;
575:            }
576:
577:            /**
578:             * Gets the components that have been defined for this embedded server.
579:             * @return the components.
580:             */
581:            public Components getComponents() {
582:                return this .components;
583:            }
584:
585:            /**
586:             * Sets the components that needs to be launched.
587:             * @param components the set of components.
588:             */
589:            public void setComponents(final Components components) {
590:                this .components = components;
591:            }
592:
593:            /**
594:             * Gets component with the given name.
595:             * @param componentName the name of the component.
596:             * @return the component (if any)
597:             */
598:            public EZBComponent getComponent(final String componentName) {
599:                // ask registry if present.
600:                if (componentManager != null) {
601:                    return componentManager.getComponentRegistry()
602:                            .getComponent(componentName);
603:                }
604:                return null;
605:            }
606:
607:            /**
608:             * @return Returns the ComponentManager used by this instance.
609:             */
610:            public ComponentManager getComponentManager() {
611:                return componentManager;
612:            }
613:        }
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