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

   1 package org.argeo.cms.internal.kernel;
   2
   3 import java.lang.management.ManagementFactory;
   4 import java.util.HashMap;
   5 import java.util.Map;
   6
   7 import javax.jcr.Repository;
   8 import javax.jcr.RepositoryFactory;
   9
  10 import org.apache.commons.logging.Log;
  11 import org.apache.commons.logging.LogFactory;
  12 import org.apache.jackrabbit.util.TransientFileFactory;
  13 import org.argeo.ArgeoException;
  14 import org.argeo.cms.CmsException;
  15 import org.argeo.jackrabbit.OsgiJackrabbitRepositoryFactory;
  16 import org.argeo.jcr.ArgeoJcrConstants;
  17 import org.argeo.security.core.InternalAuthentication;
  18 import org.eclipse.equinox.http.servlet.ExtendedHttpService;
  19 import org.osgi.framework.BundleContext;
  20 import org.osgi.framework.ServiceEvent;
  21 import org.osgi.framework.ServiceListener;
  22 import org.osgi.framework.ServiceReference;
  23 import org.osgi.util.tracker.ServiceTracker;
  24 import org.springframework.security.core.context.SecurityContextHolder;
  25
  26 /**
  27  * Argeo CMS Kernel. Responsible for :
  28  * <ul>
  29  * <li>security</li>
  30  * <li>provisioning</li>
  31  * <li>transaction</li>
  32  * <li>logging</li>
  33  * <li>local and remote file systems access</li>
  34  * <li>OS access</li>
  35  * </ul>
  36  */
  37 final class Kernel implements ServiceListener {
  38         private final static Log log = LogFactory.getLog(Kernel.class);
  39
  40         private final BundleContext bundleContext = Activator.getBundleContext();
  41
  42         private JackrabbitNode node;
  43         private OsgiJackrabbitRepositoryFactory repositoryFactory;
  44         private NodeSecurity nodeSecurity;
  45         private NodeHttp nodeHttp;
  46
  47         void init() {
  48                 ClassLoader currentContextCl = Thread.currentThread()
  49                                 .getContextClassLoader();
  50                 Thread.currentThread().setContextClassLoader(
  51                                 Kernel.class.getClassLoader());
  52                 long begin = System.currentTimeMillis();
  53                 InternalAuthentication initAuth = new InternalAuthentication(
  54                                 KernelConstants.DEFAULT_SECURITY_KEY);
  55                 SecurityContextHolder.getContext().setAuthentication(initAuth);
  56
  57                 try {
  58                         // Jackrabbit node
  59                         node = new JackrabbitNode(bundleContext);
  60
  61                         // JCR repository factory
  62                         repositoryFactory = new OsgiJackrabbitRepositoryFactory();
  63
  64                         // Authentication
  65                         nodeSecurity = new NodeSecurity(bundleContext, node);
  66
  67                         // Equinox dependency
  68                         ExtendedHttpService httpService = waitForHttpService();
  69                         nodeHttp = new NodeHttp(httpService, node, nodeSecurity);
  70
  71                         // Publish services to OSGi
  72                         nodeSecurity.publish();
  73                         node.publish(repositoryFactory);
  74                         bundleContext.registerService(RepositoryFactory.class,
  75                                         repositoryFactory, null);
  76
  77                         bundleContext.addServiceListener(Kernel.this);
  78                 } catch (Exception e) {
  79                         log.error("Cannot initialize Argeo CMS", e);
  80                         throw new ArgeoException("Cannot initialize", e);
  81                 } finally {
  82                         Thread.currentThread().setContextClassLoader(currentContextCl);
  83                 }
  84
  85                 long jvmUptime = ManagementFactory.getRuntimeMXBean().getUptime();
  86                 log.info("## ARGEO CMS UP in " + (jvmUptime / 1000) + "."
  87                                 + (jvmUptime % 1000) + "s ##");
  88                 long initDuration = System.currentTimeMillis() - begin;
  89                 if (log.isTraceEnabled())
  90                         log.trace("Kernel initialization took " + initDuration + "ms");
  91                 directorsCut(initDuration);
  92         }
  93
  94         void destroy() {
  95                 long begin = System.currentTimeMillis();
  96
  97                 if (nodeHttp != null)
  98                         nodeHttp.destroy();
  99                 if (nodeSecurity != null)
 100                         nodeSecurity.destroy();
 101                 if (node != null)
 102                         node.destroy();
 103
 104                 bundleContext.removeServiceListener(this);
 105
 106                 // Clean hanging threads from Jackrabbit
 107                 TransientFileFactory.shutdown();
 108
 109                 long duration = System.currentTimeMillis() - begin;
 110                 log.info("## ARGEO CMS DOWN in " + (duration / 1000) + "."
 111                                 + (duration % 1000) + "s ##");
 112         }
 113
 114         @Override
 115         public void serviceChanged(ServiceEvent event) {
 116                 ServiceReference<?> sr = event.getServiceReference();
 117                 Object jcrRepoAlias = sr
 118                                 .getProperty(ArgeoJcrConstants.JCR_REPOSITORY_ALIAS);
 119                 if (jcrRepoAlias != null) {// JCR repository
 120                         String alias = jcrRepoAlias.toString();
 121                         Repository repository = (Repository) bundleContext.getService(sr);
 122                         Map<String, Object> props = new HashMap<String, Object>();
 123                         for (String key : sr.getPropertyKeys())
 124                                 props.put(key, sr.getProperty(key));
 125                         if (ServiceEvent.REGISTERED == event.getType()) {
 126                                 try {
 127                                         repositoryFactory.register(repository, props);
 128                                         nodeHttp.registerRepositoryServlets(alias, repository);
 129                                 } catch (Exception e) {
 130                                         throw new CmsException("Could not publish JCR repository "
 131                                                         + alias, e);
 132                                 }
 133                         } else if (ServiceEvent.UNREGISTERING == event.getType()) {
 134                                 repositoryFactory.unregister(repository, props);
 135                                 nodeHttp.unregisterRepositoryServlets(alias);
 136                         }
 137                 }
 138
 139         }
 140
 141         private ExtendedHttpService waitForHttpService() {
 142                 final ServiceTracker<ExtendedHttpService, ExtendedHttpService> st = new ServiceTracker<ExtendedHttpService, ExtendedHttpService>(
 143                                 bundleContext, ExtendedHttpService.class, null);
 144                 st.open();
 145                 ExtendedHttpService httpService;
 146                 try {
 147                         httpService = st.waitForService(1000);
 148                 } catch (InterruptedException e) {
 149                         httpService = null;
 150                 }
 151
 152                 if (httpService == null)
 153                         throw new CmsException("Could not find "
 154                                         + ExtendedHttpService.class + " service.");
 155                 return httpService;
 156         }
 157
 158         final private static void directorsCut(long initDuration) {
 159                 // final long ms = 128l + (long) (Math.random() * 128d);
 160                 long ms = initDuration / 100;
 161                 log.info("Spend " + ms + "ms"
 162                                 + " reflecting on the progress brought to mankind"
 163                                 + " by Free Software...");
 164                 long beginNano = System.nanoTime();
 165                 try {
 166                         Thread.sleep(ms, 0);
 167                 } catch (InterruptedException e) {
 168                         // silent
 169                 }
 170                 long durationNano = System.nanoTime() - beginNano;
 171                 final double M = 1000d * 1000d;
 172                 double sleepAccuracy = ((double) durationNano) / (ms * M);
 173                 if (log.isDebugEnabled())
 174                         log.debug("Sleep accuracy: "
 175                                         + String.format("%.2f", 100 - (sleepAccuracy * 100 - 100))
 176                                         + " %");
 177         }
 178 }