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

   1 package org.argeo.cms.internal.kernel;
   2
   3 import org.apache.commons.logging.Log;
   4 import org.apache.commons.logging.LogFactory;
   5 import org.osgi.framework.Bundle;
   6 import org.osgi.framework.FrameworkEvent;
   7 import org.osgi.framework.FrameworkUtil;
   8 import org.osgi.framework.launch.Framework;
   9
  10 /** Shutdowns the OSGi framework */
  11 class CmsShutdown extends Thread {
  12         public final int EXIT_OK = 0;
  13         public final int EXIT_ERROR = 1;
  14         public final int EXIT_TIMEOUT = 2;
  15         public final int EXIT_UNKNOWN = 3;
  16
  17         private final Log log = LogFactory.getLog(CmsShutdown.class);
  18         // private final BundleContext bc =
  19         // FrameworkUtil.getBundle(CmsShutdown.class).getBundleContext();
  20         private final Framework framework;
  21
  22         /** Shutdown timeout in ms */
  23         private long timeout = 10 * 60 * 1000;
  24
  25         public CmsShutdown() {
  26                 super("CMS Shutdown Hook");
  27                 framework = FrameworkUtil.getBundle(CmsShutdown.class) != null
  28                                 ? (Framework) FrameworkUtil.getBundle(CmsShutdown.class).getBundleContext().getBundle(0)
  29                                 : null;
  30         }
  31
  32         @Override
  33         public void run() {
  34                 if (framework != null && framework.getState() != Bundle.ACTIVE) {
  35                         return;
  36                 }
  37
  38                 if (log.isDebugEnabled())
  39                         log.debug("Shutting down OSGi framework...");
  40                 try {
  41                         if (framework != null) {
  42                                 // shutdown framework
  43                                 framework.stop();
  44                                 // wait for shutdown
  45                                 FrameworkEvent shutdownEvent = framework.waitForStop(timeout);
  46                                 int stoppedType = shutdownEvent.getType();
  47                                 Runtime runtime = Runtime.getRuntime();
  48                                 if (stoppedType == FrameworkEvent.STOPPED) {
  49                                         // close VM
  50                                         // System.exit(EXIT_OK);
  51                                 } else if (stoppedType == FrameworkEvent.ERROR) {
  52                                         log.error("The OSGi framework stopped with an error");
  53                                         runtime.halt(EXIT_ERROR);
  54                                 } else if (stoppedType == FrameworkEvent.WAIT_TIMEDOUT) {
  55                                         log.error("The OSGi framework hasn't stopped after " + timeout + "ms."
  56                                                         + " Forcibly terminating the JVM...");
  57                                         runtime.halt(EXIT_TIMEOUT);
  58                                 } else {
  59                                         log.error("Unknown state of OSGi framework after " + timeout + "ms."
  60                                                         + " Forcibly terminating the JVM... (" + shutdownEvent + ")");
  61                                         runtime.halt(EXIT_UNKNOWN);
  62                                 }
  63                         }
  64                 } catch (Exception e) {
  65                         e.printStackTrace();
  66                         log.error("Unexpected exception " + e + " in shutdown hook. " + " Forcibly terminating the JVM...");
  67                         Runtime.getRuntime().halt(EXIT_UNKNOWN);
  68                 }
  69         }
  70
  71 }