org.argeo.init/src/org/argeo/init/osgi/InitActivator.java

   1 package org.argeo.init.osgi;
   2
   3 import java.lang.System.Logger;
   4 import java.lang.System.Logger.Level;
   5 import java.lang.reflect.InvocationTargetException;
   6 import java.util.Objects;
   7
   8 import org.argeo.api.init.RuntimeManager;
   9 import org.argeo.init.logging.ThinLoggerFinder;
  10 import org.osgi.framework.BundleActivator;
  11 import org.osgi.framework.BundleContext;
  12 import org.osgi.framework.ServiceRegistration;
  13 import org.osgi.framework.connect.ConnectFrameworkFactory;
  14 import org.osgi.framework.launch.Framework;
  15
  16 /**
  17  * An OSGi configurator. See
  18  * <a href="http://wiki.eclipse.org/Configurator">http:
  19  * //wiki.eclipse.org/Configurator</a>
  20  */
  21 public class InitActivator implements BundleActivator {
  22         static {
  23                 // must be called first
  24                 ThinLoggerFinder.lazyInit();
  25         }
  26         private final static Logger logger = System.getLogger(InitActivator.class.getName());
  27
  28         private Long checkpoint = null;
  29
  30         // TODO use framework factory SR
  31 //      @Deprecated
  32 //      private boolean argeoInit = false;
  33         /** Not null if we created it ourselves. */
  34         private OsgiRuntimeContext runtimeContext;
  35         private ServiceRegistration<ConnectFrameworkFactory> frameworkFactorySr = null;
  36
  37         private static OsgiRuntimeManager runtimeManager;
  38
  39         public void start(final BundleContext bundleContext) throws Exception {
  40                 ConnectFrameworkFactory frameworkFactory = OsgiRuntimeContext.getFrameworkFactory(bundleContext);
  41                 if (frameworkFactory == null) {
  42 //                      argeoInit = false;
  43                         frameworkFactory = newFrameworkFactory();
  44                         frameworkFactorySr = bundleContext.registerService(ConnectFrameworkFactory.class, frameworkFactory, null);
  45                 }
  46
  47                 // The OSGi runtime was created by us, and therefore already initialized
  48 //              argeoInit = Boolean.parseBoolean(bundleContext.getProperty(ServiceMain.PROP_ARGEO_INIT_MAIN));
  49                 if (!isArgeoInit()) {
  50                         if (runtimeContext == null) {
  51                                 runtimeContext = new OsgiRuntimeContext(bundleContext);
  52                                 logger.log(Level.DEBUG, () -> "Argeo init via OSGi activator");
  53                         }
  54
  55                         // admin thread
  56 //              Thread adminThread = new AdminThread(bundleContext);
  57 //              adminThread.start();
  58
  59                         // bootstrap
  60 //              OsgiBoot osgiBoot = new OsgiBoot(bundleContext);
  61                         if (checkpoint == null) {
  62 //                      osgiBoot.bootstrap();
  63                                 checkpoint = System.currentTimeMillis();
  64                         } else {
  65                                 runtimeContext.update();
  66                                 checkpoint = System.currentTimeMillis();
  67                         }
  68                 } else {
  69
  70                         if (runtimeManager != null)
  71                                 throw new IllegalArgumentException("Runtime manager is already set");
  72                         runtimeManager = new OsgiRuntimeManager(bundleContext);
  73                 }
  74         }
  75
  76         public void stop(BundleContext context) throws Exception {
  77                 if (!isArgeoInit()) {
  78                         frameworkFactorySr.unregister();
  79                         Objects.nonNull(runtimeContext);
  80                         runtimeContext.stop(context);
  81                         runtimeContext = null;
  82                 }
  83                 runtimeManager = null;
  84         }
  85
  86         /** Whether it wa sinitialised by an Argeo Init main class. */
  87         private boolean isArgeoInit() {
  88                 return frameworkFactorySr == null;
  89         }
  90
  91         public static RuntimeManager getRuntimeManager() {
  92                 return runtimeManager;
  93         }
  94
  95         /**
  96          * Workaround to explicitly instantiate an Equinox
  97          * {@link ConnectFrameworkFactory} when running in a pure OSGi runtime.
  98          */
  99         private ConnectFrameworkFactory newFrameworkFactory() {
 100                 final String EQUINOX_FRAMEWORK_FACTORY_CLASS = "org.eclipse.osgi.launch.EquinoxFactory";
 101                 try {
 102                         @SuppressWarnings("unchecked")
 103                         Class<? extends ConnectFrameworkFactory> frameworkFactoryClass = (Class<? extends ConnectFrameworkFactory>) Framework.class
 104                                         .getClassLoader().loadClass(EQUINOX_FRAMEWORK_FACTORY_CLASS);
 105                         return frameworkFactoryClass.getConstructor().newInstance();
 106                 } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | IllegalArgumentException
 107                                 | InvocationTargetException | NoSuchMethodException | SecurityException e) {
 108                         throw new IllegalStateException("Cannot create OSGi framework factory", e);
 109                 }
 110         }
 111 }