/** * This is a Felix specific extension mechanism that allows extension bundles to have activators * and be started via this method. * * @param felix the framework instance the extension bundle is installed in. * @param bundle the extension bundle to start if it has a Felix specific activator. */ void startExtensionBundle(Felix felix, BundleImpl bundle) { String activatorClass = (String) ((BundleRevisionImpl) bundle.adapt(BundleRevision.class)) .getHeaders() .get(FelixConstants.FELIX_EXTENSION_ACTIVATOR); if (activatorClass != null) { try { // TODO: SECURITY - Should this consider security? BundleActivator activator = (BundleActivator) felix.getClass().getClassLoader().loadClass(activatorClass.trim()).newInstance(); // TODO: EXTENSIONMANAGER - This is kind of hacky, can we improve it? felix.m_activatorList.add(activator); BundleContext context = felix._getBundleContext(); bundle.setBundleContext(context); if ((felix.getState() == Bundle.ACTIVE) || (felix.getState() == Bundle.STARTING)) { Felix.m_secureAction.startActivator(activator, context); } } catch (Throwable ex) { m_logger.log(bundle, Logger.LOG_WARNING, "Unable to start Felix Extension Activator", ex); } } }
/** * This is a Felix specific extension mechanism that allows extension bundles to have activators * and be started via this method. * * @param felix the framework instance the extension bundle is installed in. * @param bundle the extension bundle to start if it has a Felix specific activator. */ void startExtensionBundle(Felix felix, BundleImpl bundle) { Map<?, ?> headers = bundle.adapt(BundleRevisionImpl.class).getHeaders(); String activatorClass = (String) headers.get(Constants.EXTENSION_BUNDLE_ACTIVATOR); boolean felixExtension = false; if (activatorClass == null) { felixExtension = true; activatorClass = (String) headers.get(FelixConstants.FELIX_EXTENSION_ACTIVATOR); } if (activatorClass != null) { ExtensionTuple tuple = null; try { // TODO: SECURITY - Should this consider security? BundleActivator activator = (BundleActivator) felix.getClass().getClassLoader().loadClass(activatorClass.trim()).newInstance(); BundleContext context = felix._getBundleContext(); bundle.setBundleContext(context); // TODO: EXTENSIONMANAGER - This is kind of hacky, can we improve it? if (!felixExtension) { tuple = new ExtensionTuple(activator, bundle); m_extensionTuples.add(tuple); } else { felix.m_activatorList.add(activator); } if ((felix.getState() == Bundle.ACTIVE) || (felix.getState() == Bundle.STARTING)) { if (tuple != null) { tuple.m_started = true; } Felix.m_secureAction.startActivator(activator, context); } } catch (Throwable ex) { if (tuple != null) { tuple.m_failed = true; } felix.fireFrameworkEvent( FrameworkEvent.ERROR, bundle, new BundleException("Unable to start Bundle", ex)); m_logger.log(bundle, Logger.LOG_WARNING, "Unable to start Extension Activator", ex); } } }
/** * Add an extension bundle. The bundle will be added to the parent classloader and it's exported * packages will be added to the module definition exports of this instance. Subsequently, they * are available form the instance in it's role as content loader. * * @param felix the framework instance the given extension bundle comes from. * @param bundle the extension bundle to add. * @throws BundleException if extension bundles are not supported or this is not a framework * extension. * @throws SecurityException if the caller does not have the needed * AdminPermission.EXTENSIONLIFECYCLE and security is enabled. * @throws Exception in case something goes wrong. */ synchronized void addExtensionBundle(Felix felix, BundleImpl bundle) throws SecurityException, BundleException, Exception { Object sm = System.getSecurityManager(); if (sm != null) { ((SecurityManager) sm) .checkPermission(new AdminPermission(bundle, AdminPermission.EXTENSIONLIFECYCLE)); } if (!((BundleProtectionDomain) bundle.getProtectionDomain()) .impliesDirect(new AllPermission())) { throw new SecurityException("Extension Bundles must have AllPermission"); } String directive = ManifestParser.parseExtensionBundleHeader( (String) ((BundleRevisionImpl) bundle.adapt(BundleRevision.class)) .getHeaders() .get(Constants.FRAGMENT_HOST)); // We only support classpath extensions (not bootclasspath). if (!Constants.EXTENSION_FRAMEWORK.equals(directive)) { throw new BundleException( "Unsupported Extension Bundle type: " + directive, new UnsupportedOperationException("Unsupported Extension Bundle type!")); } try { // Merge the exported packages with the exported packages of the systembundle. List<BundleCapability> exports = null; try { exports = ManifestParser.parseExportHeader( m_logger, m_systemBundleRevision, (String) ((BundleRevisionImpl) bundle.adapt(BundleRevision.class)) .getHeaders() .get(Constants.EXPORT_PACKAGE), m_systemBundleRevision.getSymbolicName(), m_systemBundleRevision.getVersion()); exports = aliasSymbolicName(exports); } catch (Exception ex) { m_logger.log( bundle, Logger.LOG_ERROR, "Error parsing extension bundle export statement: " + ((BundleRevisionImpl) bundle.adapt(BundleRevision.class)) .getHeaders() .get(Constants.EXPORT_PACKAGE), ex); return; } // Add the bundle as extension if we support extensions if (m_extensionManager != null) { // This needs to be the private instance. m_extensionManager.addExtension(felix, bundle); } else { // We don't support extensions (i.e., the parent is not an URLClassLoader). m_logger.log( bundle, Logger.LOG_WARNING, "Unable to add extension bundle to FrameworkClassLoader - Maybe not an URLClassLoader?"); throw new UnsupportedOperationException( "Unable to add extension bundle to FrameworkClassLoader - Maybe not an URLClassLoader?"); } appendCapabilities(exports); } catch (Exception ex) { throw ex; } BundleRevisionImpl bri = (BundleRevisionImpl) bundle.adapt(BundleRevision.class); List<BundleRequirement> reqs = bri.getDeclaredRequirements(BundleRevision.HOST_NAMESPACE); List<BundleCapability> caps = getCapabilities(BundleRevision.HOST_NAMESPACE); BundleWire bw = new BundleWireImpl(bri, reqs.get(0), m_systemBundleRevision, caps.get(0)); bri.resolve( new BundleWiringImpl( m_logger, m_configMap, null, bri, null, Collections.singletonList(bw), Collections.EMPTY_MAP, Collections.EMPTY_MAP)); felix.getDependencies().addDependent(bw); felix.setBundleStateAndNotify(bundle, Bundle.RESOLVED); }