org.argeo.cms/src/org/argeo/cms/internal/kernel/Kernel.java

   1 package org.argeo.cms.internal.kernel;
   2
   3 import static bitronix.tm.TransactionManagerServices.getTransactionManager;
   4 import static bitronix.tm.TransactionManagerServices.getTransactionSynchronizationRegistry;
   5 import static org.argeo.cms.internal.kernel.KernelUtils.getFrameworkProp;
   6 import static org.argeo.cms.internal.kernel.KernelUtils.getOsgiInstancePath;
   7 import static org.argeo.jcr.ArgeoJcrConstants.ALIAS_NODE;
   8 import static org.argeo.jcr.ArgeoJcrConstants.JCR_REPOSITORY_ALIAS;
   9 import static org.osgi.framework.Constants.FRAMEWORK_UUID;
  10
  11 import java.io.File;
  12 import java.lang.management.ManagementFactory;
  13 import java.security.PrivilegedAction;
  14 import java.util.HashMap;
  15 import java.util.Hashtable;
  16 import java.util.Map;
  17
  18 import javax.jcr.Repository;
  19 import javax.jcr.RepositoryFactory;
  20 import javax.security.auth.Subject;
  21 import javax.transaction.TransactionManager;
  22 import javax.transaction.TransactionSynchronizationRegistry;
  23 import javax.transaction.UserTransaction;
  24
  25 import org.apache.commons.logging.Log;
  26 import org.apache.commons.logging.LogFactory;
  27 import org.apache.jackrabbit.util.TransientFileFactory;
  28 import org.argeo.ArgeoException;
  29 import org.argeo.ArgeoLogger;
  30 import org.argeo.cms.CmsException;
  31 import org.argeo.jackrabbit.OsgiJackrabbitRepositoryFactory;
  32 import org.argeo.jcr.ArgeoJcrConstants;
  33 import org.eclipse.equinox.http.servlet.ExtendedHttpService;
  34 import org.osgi.framework.BundleContext;
  35 import org.osgi.framework.ServiceEvent;
  36 import org.osgi.framework.ServiceListener;
  37 import org.osgi.framework.ServiceReference;
  38 import org.osgi.framework.ServiceRegistration;
  39 import org.osgi.service.useradmin.UserAdmin;
  40
  41 import bitronix.tm.BitronixTransactionManager;
  42 import bitronix.tm.BitronixTransactionSynchronizationRegistry;
  43 import bitronix.tm.Configuration;
  44 import bitronix.tm.TransactionManagerServices;
  45
  46 /**
  47  * Argeo CMS Kernel. Responsible for :
  48  * <ul>
  49  * <li>security</li>
  50  * <li>provisioning</li>
  51  * <li>transaction</li>
  52  * <li>logging</li>
  53  * <li>local and remote file systems access</li>
  54  * <li>OS access</li>
  55  * </ul>
  56  */
  57 final class Kernel implements KernelConstants, ServiceListener {
  58         /*
  59          * REGISTERED SERVICES
  60          */
  61         private ServiceRegistration<ArgeoLogger> loggerReg;
  62         private ServiceRegistration<TransactionManager> tmReg;
  63         private ServiceRegistration<UserTransaction> utReg;
  64         private ServiceRegistration<TransactionSynchronizationRegistry> tsrReg;
  65         private ServiceRegistration<Repository> repositoryReg;
  66         private ServiceRegistration<RepositoryFactory> repositoryFactoryReg;
  67         private ServiceRegistration<UserAdmin> userAdminReg;
  68
  69         /*
  70          * SERVICES IMPLEMENTATIONS
  71          */
  72         private NodeLogger logger;
  73         private BitronixTransactionManager transactionManager;
  74         private BitronixTransactionSynchronizationRegistry transactionSynchronizationRegistry;
  75         private OsgiJackrabbitRepositoryFactory repositoryFactory;
  76         NodeRepository repository;
  77         private NodeUserAdmin userAdmin;
  78
  79         // Members
  80         private final static Log log = LogFactory.getLog(Kernel.class);
  81         ThreadGroup threadGroup = new ThreadGroup(Kernel.class.getSimpleName());
  82         private final BundleContext bc = Activator.getBundleContext();
  83         private final NodeSecurity nodeSecurity;
  84         private DataHttp dataHttp;
  85         private KernelThread kernelThread;
  86
  87         public Kernel() {
  88                 nodeSecurity = new NodeSecurity();
  89         }
  90
  91         final void init() {
  92                 Subject.doAs(nodeSecurity.getKernelSubject(),
  93                                 new PrivilegedAction<Void>() {
  94                                         @Override
  95                                         public Void run() {
  96                                                 doInit();
  97                                                 return null;
  98                                         }
  99                                 });
 100         }
 101
 102         private void doInit() {
 103                 ClassLoader currentContextCl = Thread.currentThread()
 104                                 .getContextClassLoader();
 105                 Thread.currentThread().setContextClassLoader(
 106                                 Kernel.class.getClassLoader());
 107                 long begin = System.currentTimeMillis();
 108
 109                 try {
 110                         // Initialise services
 111                         logger = new NodeLogger();
 112                         // transactionManager = new SimpleTransactionManager();
 113                         initBitronixTransactionManager();
 114                         repository = new NodeRepository(bc);
 115                         repositoryFactory = new OsgiJackrabbitRepositoryFactory();
 116                         userAdmin = new NodeUserAdmin(transactionManager, repository);
 117
 118                         // HTTP
 119                         ServiceReference<ExtendedHttpService> sr = bc
 120                                         .getServiceReference(ExtendedHttpService.class);
 121                         if (sr != null)
 122                                 addHttpService(sr);
 123
 124                         // Kernel thread
 125                         kernelThread = new KernelThread(this);
 126                         kernelThread.setContextClassLoader(Kernel.class.getClassLoader());
 127                         kernelThread.start();
 128
 129                         // Publish services to OSGi
 130                         publish();
 131                 } catch (Exception e) {
 132                         log.error("Cannot initialize Argeo CMS", e);
 133                         throw new ArgeoException("Cannot initialize", e);
 134                 } finally {
 135                         Thread.currentThread().setContextClassLoader(currentContextCl);
 136                 }
 137
 138                 long jvmUptime = ManagementFactory.getRuntimeMXBean().getUptime();
 139                 log.info("## ARGEO CMS UP in " + (jvmUptime / 1000) + "."
 140                                 + (jvmUptime % 1000) + "s ##");
 141                 long initDuration = System.currentTimeMillis() - begin;
 142                 if (log.isTraceEnabled())
 143                         log.trace("Kernel initialization took " + initDuration + "ms");
 144                 directorsCut(initDuration);
 145         }
 146
 147         private void initBitronixTransactionManager() {
 148                 Configuration tmConf = TransactionManagerServices.getConfiguration();
 149                 tmConf.setServerId(getFrameworkProp(FRAMEWORK_UUID));
 150
 151                 File tmBaseDir = new File(getFrameworkProp(TRANSACTIONS_HOME,
 152                                 getOsgiInstancePath("transactions")));
 153                 File tmDir1 = new File(tmBaseDir, "btm1");
 154                 tmDir1.mkdirs();
 155                 tmConf.setLogPart1Filename(new File(tmDir1, tmDir1.getName() + ".tlog")
 156                                 .getAbsolutePath());
 157                 File tmDir2 = new File(tmBaseDir, "btm2");
 158                 tmDir2.mkdirs();
 159                 tmConf.setLogPart2Filename(new File(tmDir2, tmDir2.getName() + ".tlog")
 160                                 .getAbsolutePath());
 161                 transactionManager = getTransactionManager();
 162                 transactionSynchronizationRegistry = getTransactionSynchronizationRegistry();
 163         }
 164
 165         private void publish() {
 166                 // Listen to service publication (also ours)
 167                 bc.addServiceListener(Kernel.this);
 168
 169                 // Logging
 170                 loggerReg = bc.registerService(ArgeoLogger.class, logger, null);
 171                 // Transaction
 172                 tmReg = bc.registerService(TransactionManager.class,
 173                                 transactionManager, null);
 174                 utReg = bc.registerService(UserTransaction.class, transactionManager,
 175                                 null);
 176                 tsrReg = bc.registerService(TransactionSynchronizationRegistry.class,
 177                                 transactionSynchronizationRegistry, null);
 178                 // User admin
 179                 userAdminReg = bc.registerService(UserAdmin.class, userAdmin,
 180                                 userAdmin.currentState());
 181                 // JCR
 182                 Hashtable<String, String> regProps = new Hashtable<String, String>();
 183                 regProps.put(JCR_REPOSITORY_ALIAS, ALIAS_NODE);
 184                 repositoryReg = bc.registerService(Repository.class, repository,
 185                                 regProps);
 186                 repositoryFactoryReg = bc.registerService(RepositoryFactory.class,
 187                                 repositoryFactory, null);
 188         }
 189
 190         void destroy() {
 191                 long begin = System.currentTimeMillis();
 192                 unpublish();
 193
 194                 kernelThread.destroyAndJoin();
 195
 196                 if (dataHttp != null)
 197                         dataHttp.destroy();
 198                 if (userAdmin != null)
 199                         userAdmin.destroy();
 200                 if (repository != null)
 201                         repository.destroy();
 202                 if (transactionManager != null)
 203                         transactionManager.shutdown();
 204
 205                 bc.removeServiceListener(this);
 206
 207                 // Clean hanging threads from Jackrabbit
 208                 TransientFileFactory.shutdown();
 209
 210                 // Clean hanging Gogo shell thread
 211                 new GogoShellKiller().start();
 212
 213                 nodeSecurity.destroy();
 214                 long duration = System.currentTimeMillis() - begin;
 215                 log.info("## ARGEO CMS DOWN in " + (duration / 1000) + "."
 216                                 + (duration % 1000) + "s ##");
 217         }
 218
 219         private void unpublish() {
 220                 userAdminReg.unregister();
 221                 repositoryFactoryReg.unregister();
 222                 repositoryReg.unregister();
 223                 tmReg.unregister();
 224                 utReg.unregister();
 225                 tsrReg.unregister();
 226                 loggerReg.unregister();
 227         }
 228
 229         @Override
 230         public void serviceChanged(ServiceEvent event) {
 231                 ServiceReference<?> sr = event.getServiceReference();
 232                 Object service = bc.getService(sr);
 233                 if (service instanceof Repository) {
 234                         Object jcrRepoAlias = sr
 235                                         .getProperty(ArgeoJcrConstants.JCR_REPOSITORY_ALIAS);
 236                         if (jcrRepoAlias != null) {// JCR repository
 237                                 String alias = jcrRepoAlias.toString();
 238                                 Repository repository = (Repository) bc.getService(sr);
 239                                 Map<String, Object> props = new HashMap<String, Object>();
 240                                 for (String key : sr.getPropertyKeys())
 241                                         props.put(key, sr.getProperty(key));
 242                                 if (ServiceEvent.REGISTERED == event.getType()) {
 243                                         try {
 244                                                 repositoryFactory.register(repository, props);
 245                                                 dataHttp.registerRepositoryServlets(alias, repository);
 246                                         } catch (Exception e) {
 247                                                 throw new CmsException(
 248                                                                 "Could not publish JCR repository " + alias, e);
 249                                         }
 250                                 } else if (ServiceEvent.UNREGISTERING == event.getType()) {
 251                                         repositoryFactory.unregister(repository, props);
 252                                         dataHttp.unregisterRepositoryServlets(alias);
 253                                 }
 254                         }
 255                 } else if (service instanceof ExtendedHttpService) {
 256                         if (ServiceEvent.REGISTERED == event.getType()) {
 257                                 addHttpService(sr);
 258                         } else if (ServiceEvent.UNREGISTERING == event.getType()) {
 259                                 dataHttp.destroy();
 260                                 dataHttp = null;
 261                         }
 262                 }
 263         }
 264
 265         private void addHttpService(ServiceReference<?> sr) {
 266                 // for (String key : sr.getPropertyKeys())
 267                 // log.debug(key + "=" + sr.getProperty(key));
 268                 ExtendedHttpService httpService = (ExtendedHttpService) bc
 269                                 .getService(sr);
 270                 // TODO find constants
 271                 Object httpPort = sr.getProperty("http.port");
 272                 Object httpsPort = sr.getProperty("https.port");
 273                 dataHttp = new DataHttp(httpService, repository);
 274                 if (log.isDebugEnabled())
 275                         log.debug("HTTP " + httpPort
 276                                         + (httpsPort != null ? " - HTTPS " + httpsPort : ""));
 277         }
 278
 279         // private ExtendedHttpService waitForHttpService() {
 280         // final ServiceTracker<ExtendedHttpService, ExtendedHttpService> st = new
 281         // ServiceTracker<ExtendedHttpService, ExtendedHttpService>(
 282         // bc, ExtendedHttpService.class, null);
 283         // st.open();
 284         // ExtendedHttpService httpService;
 285         // try {
 286         // httpService = st.waitForService(1000);
 287         // } catch (InterruptedException e) {
 288         // httpService = null;
 289         // }
 290         //
 291         // if (httpService == null)
 292         // throw new CmsException("Could not find "
 293         // + ExtendedHttpService.class + " service.");
 294         // return httpService;
 295         // }
 296
 297         final private static void directorsCut(long initDuration) {
 298                 // final long ms = 128l + (long) (Math.random() * 128d);
 299                 long ms = initDuration / 100;
 300                 log.info("Spend " + ms + "ms"
 301                                 + " reflecting on the progress brought to mankind"
 302                                 + " by Free Software...");
 303                 long beginNano = System.nanoTime();
 304                 try {
 305                         Thread.sleep(ms, 0);
 306                 } catch (InterruptedException e) {
 307                         // silent
 308                 }
 309                 long durationNano = System.nanoTime() - beginNano;
 310                 final double M = 1000d * 1000d;
 311                 double sleepAccuracy = ((double) durationNano) / (ms * M);
 312                 if (log.isDebugEnabled())
 313                         log.debug("Sleep accuracy: "
 314                                         + String.format("%.2f", 100 - (sleepAccuracy * 100 - 100))
 315                                         + " %");
 316         }
 317
 318         /** Workaround for blocking Gogo shell by system shutdown. */
 319         private class GogoShellKiller extends Thread {
 320
 321                 public GogoShellKiller() {
 322                         super("Gogo shell killer");
 323                         setDaemon(true);
 324                 }
 325
 326                 @Override
 327                 public void run() {
 328                         ThreadGroup rootTg = getRootThreadGroup(null);
 329                         Thread gogoShellThread = findGogoShellThread(rootTg);
 330                         if (gogoShellThread == null)
 331                                 return;
 332                         while (getNonDaemonCount(rootTg) > 2) {
 333                                 try {
 334                                         Thread.sleep(100);
 335                                 } catch (InterruptedException e) {
 336                                         // silent
 337                                 }
 338                         }
 339                         gogoShellThread = findGogoShellThread(rootTg);
 340                         if (gogoShellThread == null)
 341                                 return;
 342                         System.exit(0);
 343                 }
 344         }
 345
 346         private static ThreadGroup getRootThreadGroup(ThreadGroup tg) {
 347                 if (tg == null)
 348                         tg = Thread.currentThread().getThreadGroup();
 349                 if (tg.getParent() == null)
 350                         return tg;
 351                 else
 352                         return getRootThreadGroup(tg.getParent());
 353         }
 354
 355         private static int getNonDaemonCount(ThreadGroup rootThreadGroup) {
 356                 Thread[] threads = new Thread[rootThreadGroup.activeCount()];
 357                 rootThreadGroup.enumerate(threads);
 358                 int nonDameonCount = 0;
 359                 for (Thread t : threads)
 360                         if (!t.isDaemon())
 361                                 nonDameonCount++;
 362                 return nonDameonCount;
 363         }
 364
 365         private static Thread findGogoShellThread(ThreadGroup rootThreadGroup) {
 366                 Thread[] threads = new Thread[rootThreadGroup.activeCount()];
 367                 rootThreadGroup.enumerate(threads, true);
 368                 for (Thread thread : threads) {
 369                         if (thread.getName().equals("Gogo shell"))
 370                                 return thread;
 371                 }
 372                 return null;
 373         }
 374
 375 }