bundles/org.eclipse.osgi/container/src/org/eclipse/osgi/internal/framework/EquinoxContainerAdaptor.java - equinox/rt.equinox.framework - Git at Google

 /*******************************************************************************
  * Copyright (c) 2012, 2017 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.osgi.internal.framework;

 import java.lang.reflect.Method;
 import java.security.ProtectionDomain;
 import java.util.EnumSet;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.Callable;
 import java.util.concurrent.Executor;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.RejectedExecutionHandler;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.SynchronousQueue;
 import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicLong;
 import org.eclipse.osgi.container.Module;
 import org.eclipse.osgi.container.Module.Settings;
 import org.eclipse.osgi.container.Module.State;
 import org.eclipse.osgi.container.ModuleCollisionHook;
 import org.eclipse.osgi.container.ModuleContainerAdaptor;
 import org.eclipse.osgi.container.ModuleLoader;
 import org.eclipse.osgi.container.ModuleRevision;
 import org.eclipse.osgi.container.ModuleRevisionBuilder;
 import org.eclipse.osgi.container.ModuleWiring;
 import org.eclipse.osgi.container.SystemModule;
 import org.eclipse.osgi.internal.container.AtomicLazyInitializer;
 import org.eclipse.osgi.internal.hookregistry.ClassLoaderHook;
 import org.eclipse.osgi.internal.loader.BundleLoader;
 import org.eclipse.osgi.internal.loader.FragmentLoader;
 import org.eclipse.osgi.internal.loader.SystemBundleLoader;
 import org.eclipse.osgi.internal.permadmin.BundlePermissions;
 import org.eclipse.osgi.service.debug.DebugOptions;
 import org.eclipse.osgi.storage.BundleInfo.Generation;
 import org.eclipse.osgi.storage.Storage;
 import org.osgi.framework.BundleEvent;
 import org.osgi.framework.Constants;
 import org.osgi.framework.FrameworkEvent;
 import org.osgi.framework.FrameworkListener;
 import org.osgi.framework.hooks.resolver.ResolverHookFactory;
 import org.osgi.framework.wiring.BundleRevision;

 public class EquinoxContainerAdaptor extends ModuleContainerAdaptor {
 	public static final ClassLoader BOOT_CLASSLOADER;
 	static {
 		ClassLoader platformClassLoader = null;
 		try {
 			Method getPlatformClassLoader = ClassLoader.class.getMethod("getPlatformClassLoader"); //$NON-NLS-1$
 			platformClassLoader = (ClassLoader) getPlatformClassLoader.invoke(null);
 		} catch (Throwable t) {
 			// try everything possible to not fail <clinit>
 			platformClassLoader = new ClassLoader(Object.class.getClassLoader()) { /* boot class loader */};
 		}
 		BOOT_CLASSLOADER = platformClassLoader;
 	}
 	private final EquinoxContainer container;
 	private final Storage storage;
 	private final OSGiFrameworkHooks hooks;
 	private final Map<Long, Generation> initial;
 	// The ClassLoader parent to use when creating ModuleClassLoaders.
 	private final ClassLoader moduleClassLoaderParent;
 	private final AtomicLong lastSecurityAdminFlush;

 	final AtomicLazyInitializer<Executor> executor = new AtomicLazyInitializer<>();
 	final Callable<Executor> lazyExecutorCreator;

 	public EquinoxContainerAdaptor(EquinoxContainer container, Storage storage, Map<Long, Generation> initial) {
 		this.container = container;
 		this.storage = storage;
 		this.hooks = new OSGiFrameworkHooks(container, storage);
 		this.initial = initial;
 		this.moduleClassLoaderParent = getModuleClassLoaderParent(container.getConfiguration());
 		this.lastSecurityAdminFlush = new AtomicLong();
 		this.lazyExecutorCreator = createLazyExecutorCreator(container.getConfiguration());
 	}

 	private Callable<Executor> createLazyExecutorCreator(EquinoxConfiguration config) {
 		String threadCntProp = config.getConfiguration(EquinoxConfiguration.PROP_RESOLVER_THREAD_COUNT);
 		int threadCntTmp;
 		try {
 			threadCntTmp = threadCntProp == null ? -1 : Integer.parseInt(threadCntProp);
 		} catch (NumberFormatException e) {
 			threadCntTmp = -1;
 		}
 		// use the number of processors - 1 because we use the current thread when rejected
 		final int maxThreads = threadCntTmp <= 0 ? Math.max(Runtime.getRuntime().availableProcessors() - 1, 1) : threadCntTmp;
 		return new Callable<Executor>() {
 			@Override
 			public Executor call() throws Exception {
 				if (maxThreads == 1) {
 					return new Executor() {
 						@Override
 						public void execute(Runnable command) {
 							command.run();
 						}
 					};
 				}
 				// Always want to go to zero threads when idle
 				int coreThreads = 0;
 				// idle timeout; make it short to get rid of threads quickly after resolve
 				int idleTimeout = 10;
 				// use sync queue to force thread creation
 				BlockingQueue<Runnable> queue = new SynchronousQueue<>();
 				// try to name the threads with useful name
 				ThreadFactory threadFactory = new ThreadFactory() {
 					@Override
 					public Thread newThread(Runnable r) {
 						Thread t = new Thread(r, "Resolver thread - " + EquinoxContainerAdaptor.this.toString()); //$NON-NLS-1$
 						t.setDaemon(true);
 						return t;
 					}
 				};
 				// use a rejection policy that simply runs the task in the current thread once the max threads is reached
 				RejectedExecutionHandler rejectHandler = new RejectedExecutionHandler() {
 					@Override
 					public void rejectedExecution(Runnable r, ThreadPoolExecutor exe) {
 						r.run();
 					}
 				};
 				return new ThreadPoolExecutor(coreThreads, maxThreads, idleTimeout, TimeUnit.SECONDS, queue, threadFactory, rejectHandler);
 			}
 		};
 	}

 	private static ClassLoader getModuleClassLoaderParent(EquinoxConfiguration configuration) {
 		// allow hooks to determine the parent class loader
 		for (ClassLoaderHook hook : configuration.getHookRegistry().getClassLoaderHooks()) {
 			ClassLoader parent = hook.getModuleClassLoaderParent(configuration);
 			if (parent != null) {
 				// first one to return non-null wins.
 				return parent;
 			}
 		}
 		// DEFAULT behavior:
 		// check property for specified parent
 		// check the osgi defined property first
 		String type = configuration.getConfiguration(Constants.FRAMEWORK_BUNDLE_PARENT);
 		if (type == null) {
 			type = configuration.getConfiguration(EquinoxConfiguration.PROP_PARENT_CLASSLOADER, Constants.FRAMEWORK_BUNDLE_PARENT_BOOT);
 		}

 		if (Constants.FRAMEWORK_BUNDLE_PARENT_FRAMEWORK.equalsIgnoreCase(type) || EquinoxConfiguration.PARENT_CLASSLOADER_FWK.equalsIgnoreCase(type)) {
 			ClassLoader cl = EquinoxContainer.class.getClassLoader();
 			return cl == null ? BOOT_CLASSLOADER : cl;
 		}
 		if (Constants.FRAMEWORK_BUNDLE_PARENT_APP.equalsIgnoreCase(type))
 			return ClassLoader.getSystemClassLoader();
 		if (Constants.FRAMEWORK_BUNDLE_PARENT_EXT.equalsIgnoreCase(type)) {
 			ClassLoader appCL = ClassLoader.getSystemClassLoader();
 			if (appCL != null)
 				return appCL.getParent();
 		}
 		return BOOT_CLASSLOADER;

 	}

 	@Override
 	public ModuleCollisionHook getModuleCollisionHook() {
 		return hooks.getModuleCollisionHook();
 	}

 	@Override
 	public ResolverHookFactory getResolverHookFactory() {
 		return hooks.getResolverHookFactory();
 	}

 	@Override
 	public void publishContainerEvent(ContainerEvent type, Module module, Throwable error, FrameworkListener... listeners) {
 		EquinoxEventPublisher publisher = container.getEventPublisher();
 		if (publisher != null) {
 			publisher.publishFrameworkEvent(getType(type), module.getBundle(), error, listeners);
 		}
 	}

 	@Override
 	public void publishModuleEvent(ModuleEvent type, Module module, Module origin) {
 		EquinoxEventPublisher publisher = container.getEventPublisher();
 		if (publisher != null) {
 			publisher.publishBundleEvent(getType(type), module.getBundle(), origin.getBundle());
 		}
 	}

 	@Override
 	public Module createModule(String location, long id, EnumSet<Settings> settings, int startlevel) {
 		EquinoxBundle bundle = new EquinoxBundle(id, location, storage.getModuleContainer(), settings, startlevel, container);
 		return bundle.getModule();
 	}

 	@Override
 	public SystemModule createSystemModule() {
 		return (SystemModule) new EquinoxBundle.SystemBundle(storage.getModuleContainer(), container).getModule();
 	}

 	@Override
 	public String getProperty(String key) {
 		return storage.getConfiguration().getConfiguration(key);
 	}

 	@Override
 	public ModuleLoader createModuleLoader(ModuleWiring wiring) {
 		if (wiring.getBundle().getBundleId() == 0) {
 			ClassLoader cl = EquinoxContainer.class.getClassLoader();
 			cl = cl == null ? BOOT_CLASSLOADER : cl;
 			return new SystemBundleLoader(wiring, container, cl);
 		}
 		if ((wiring.getRevision().getTypes() & BundleRevision.TYPE_FRAGMENT) != 0) {
 			return new FragmentLoader();
 		}
 		return new BundleLoader(wiring, container, moduleClassLoaderParent);
 	}

 	@Override
 	public Generation getRevisionInfo(String location, long id) {
 		return initial.remove(id);
 	}

 	@Override
 	public void associateRevision(ModuleRevision revision, Object revisionInfo) {
 		((Generation) revisionInfo).setRevision(revision);
 	}

 	@Override
 	public void invalidateWiring(ModuleWiring moduleWiring, ModuleLoader current) {
 		if (current instanceof BundleLoader) {
 			BundleLoader bundleLoader = (BundleLoader) current;
 			bundleLoader.close();
 		}
 		long updatedTimestamp = storage.getModuleDatabase().getRevisionsTimestamp();
 		if (System.getSecurityManager() != null && updatedTimestamp != lastSecurityAdminFlush.getAndSet(updatedTimestamp)) {
 			storage.getSecurityAdmin().clearCaches();
 			List<Module> modules = storage.getModuleContainer().getModules();
 			for (Module module : modules) {
 				for (ModuleRevision revision : module.getRevisions().getModuleRevisions()) {
 					Generation generation = (Generation) revision.getRevisionInfo();
 					if (generation != null) {
 						ProtectionDomain domain = generation.getDomain();
 						if (domain != null) {
 							((BundlePermissions) domain.getPermissions()).clearPermissionCache();
 						}
 					}
 				}
 			}
 		}
 		clearManifestCache(moduleWiring);
 	}

 	private void clearManifestCache(ModuleWiring moduleWiring) {
 		boolean frameworkActive = Module.ACTIVE_SET.contains(storage.getModuleContainer().getModule(0).getState());
 		ModuleRevision revision = moduleWiring.getRevision();
 		Module module = revision.getRevisions().getModule();
 		boolean isUninstallingOrUninstalled = State.UNINSTALLED.equals(module.getState()) ^ module.holdsTransitionEventLock(ModuleEvent.UNINSTALLED);
 		if (!frameworkActive || !isUninstallingOrUninstalled) {
 			// only do this when the framework is not active or when the bundle is not uninstalled
 			Generation generation = (Generation) moduleWiring.getRevision().getRevisionInfo();
 			generation.clearManifestCache();
 		}
 	}

 	static int getType(ContainerEvent type) {
 		switch (type) {
 			case ERROR :
 				return FrameworkEvent.ERROR;
 			case INFO :
 				return FrameworkEvent.INFO;
 			case WARNING :
 				return FrameworkEvent.WARNING;
 			case REFRESH :
 				return FrameworkEvent.PACKAGES_REFRESHED;
 			case START_LEVEL :
 				return FrameworkEvent.STARTLEVEL_CHANGED;
 			case STARTED :
 				return FrameworkEvent.STARTED;
 			case STOPPED :
 				return FrameworkEvent.STOPPED;
 			case STOPPED_REFRESH :
 				return FrameworkEvent.STOPPED_SYSTEM_REFRESHED;
 			case STOPPED_UPDATE :
 				return FrameworkEvent.STOPPED_UPDATE;
 			case STOPPED_TIMEOUT :
 				return FrameworkEvent.WAIT_TIMEDOUT;
 			default :
 				// default to error
 				return FrameworkEvent.ERROR;
 		}
 	}

 	private int getType(ModuleEvent type) {
 		switch (type) {
 			case INSTALLED :
 				return BundleEvent.INSTALLED;
 			case LAZY_ACTIVATION :
 				return BundleEvent.LAZY_ACTIVATION;
 			case RESOLVED :
 				return BundleEvent.RESOLVED;
 			case STARTED :
 				return BundleEvent.STARTED;
 			case STARTING :
 				return BundleEvent.STARTING;
 			case STOPPING :
 				return BundleEvent.STOPPING;
 			case STOPPED :
 				return BundleEvent.STOPPED;
 			case UNINSTALLED :
 				return BundleEvent.UNINSTALLED;
 			case UNRESOLVED :
 				return BundleEvent.UNRESOLVED;
 			case UPDATED :
 				return BundleEvent.UPDATED;
 			default :
 				// TODO log error?
 				return 0;
 		}
 	}

 	@Override
 	public void refreshedSystemModule() {
 		storage.getConfiguration().setConfiguration(EquinoxConfiguration.PROP_FORCED_RESTART, "true"); //$NON-NLS-1$
 	}

 	@Override
 	public String toString() {
 		return container.toString();
 	}

 	@Override
 	public void updatedDatabase() {
 		StorageSaver saver = container.getStorageSaver();
 		if (saver == null)
 			return;
 		saver.save();
 	}

 	@Override
 	public void initBegin() {
 		hooks.initBegin();
 	}

 	@Override
 	public void initEnd() {
 		hooks.initEnd();
 	}

 	@Override
 	public DebugOptions getDebugOptions() {
 		return container.getConfiguration().getDebugOptions();
 	}

 	@Override
 	public Executor getResolverExecutor() {
 		return executor.getInitialized(lazyExecutorCreator);
 	}

 	@Override
 	public ScheduledExecutorService getScheduledExecutor() {
 		return container.getScheduledExecutor();
 	}

 	public void shutdownResolverExecutor() {
 		Executor current = executor.getAndClear();
 		if (current instanceof ExecutorService) {
 			((ExecutorService) current).shutdown();
 		}
 	}

 	@Override
 	public ModuleRevisionBuilder adaptModuleRevisionBuilder(ModuleEvent operation, Module origin, ModuleRevisionBuilder builder, Object revisionInfo) {
 		Generation generation = (Generation) revisionInfo;
 		return generation.adaptModuleRevisionBuilder(operation, origin, builder);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2012, 2017 IBM Corporation and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.osgi.internal.framework;

	import java.lang.reflect.Method;
	import java.security.ProtectionDomain;
	import java.util.EnumSet;
	import java.util.List;
	import java.util.Map;
	import java.util.concurrent.BlockingQueue;
	import java.util.concurrent.Callable;
	import java.util.concurrent.Executor;
	import java.util.concurrent.ExecutorService;
	import java.util.concurrent.RejectedExecutionHandler;
	import java.util.concurrent.ScheduledExecutorService;
	import java.util.concurrent.SynchronousQueue;
	import java.util.concurrent.ThreadFactory;
	import java.util.concurrent.ThreadPoolExecutor;
	import java.util.concurrent.TimeUnit;
	import java.util.concurrent.atomic.AtomicLong;
	import org.eclipse.osgi.container.Module;
	import org.eclipse.osgi.container.Module.Settings;
	import org.eclipse.osgi.container.Module.State;
	import org.eclipse.osgi.container.ModuleCollisionHook;
	import org.eclipse.osgi.container.ModuleContainerAdaptor;
	import org.eclipse.osgi.container.ModuleLoader;
	import org.eclipse.osgi.container.ModuleRevision;
	import org.eclipse.osgi.container.ModuleRevisionBuilder;
	import org.eclipse.osgi.container.ModuleWiring;
	import org.eclipse.osgi.container.SystemModule;
	import org.eclipse.osgi.internal.container.AtomicLazyInitializer;
	import org.eclipse.osgi.internal.hookregistry.ClassLoaderHook;
	import org.eclipse.osgi.internal.loader.BundleLoader;
	import org.eclipse.osgi.internal.loader.FragmentLoader;
	import org.eclipse.osgi.internal.loader.SystemBundleLoader;
	import org.eclipse.osgi.internal.permadmin.BundlePermissions;
	import org.eclipse.osgi.service.debug.DebugOptions;
	import org.eclipse.osgi.storage.BundleInfo.Generation;
	import org.eclipse.osgi.storage.Storage;
	import org.osgi.framework.BundleEvent;
	import org.osgi.framework.Constants;
	import org.osgi.framework.FrameworkEvent;
	import org.osgi.framework.FrameworkListener;
	import org.osgi.framework.hooks.resolver.ResolverHookFactory;
	import org.osgi.framework.wiring.BundleRevision;

	public class EquinoxContainerAdaptor extends ModuleContainerAdaptor {
	public static final ClassLoader BOOT_CLASSLOADER;
	static {
	ClassLoader platformClassLoader = null;
	try {
	Method getPlatformClassLoader = ClassLoader.class.getMethod("getPlatformClassLoader"); //$NON-NLS-1$
	platformClassLoader = (ClassLoader) getPlatformClassLoader.invoke(null);
	} catch (Throwable t) {
	// try everything possible to not fail <clinit>
	platformClassLoader = new ClassLoader(Object.class.getClassLoader()) { /* boot class loader */};
	}
	BOOT_CLASSLOADER = platformClassLoader;
	}
	private final EquinoxContainer container;
	private final Storage storage;
	private final OSGiFrameworkHooks hooks;
	private final Map<Long, Generation> initial;
	// The ClassLoader parent to use when creating ModuleClassLoaders.
	private final ClassLoader moduleClassLoaderParent;
	private final AtomicLong lastSecurityAdminFlush;

	final AtomicLazyInitializer<Executor> executor = new AtomicLazyInitializer<>();
	final Callable<Executor> lazyExecutorCreator;

	public EquinoxContainerAdaptor(EquinoxContainer container, Storage storage, Map<Long, Generation> initial) {
	this.container = container;
	this.storage = storage;
	this.hooks = new OSGiFrameworkHooks(container, storage);
	this.initial = initial;
	this.moduleClassLoaderParent = getModuleClassLoaderParent(container.getConfiguration());
	this.lastSecurityAdminFlush = new AtomicLong();
	this.lazyExecutorCreator = createLazyExecutorCreator(container.getConfiguration());
	}

	private Callable<Executor> createLazyExecutorCreator(EquinoxConfiguration config) {
	String threadCntProp = config.getConfiguration(EquinoxConfiguration.PROP_RESOLVER_THREAD_COUNT);
	int threadCntTmp;
	try {
	threadCntTmp = threadCntProp == null ? -1 : Integer.parseInt(threadCntProp);
	} catch (NumberFormatException e) {
	threadCntTmp = -1;
	}
	// use the number of processors - 1 because we use the current thread when rejected
	final int maxThreads = threadCntTmp <= 0 ? Math.max(Runtime.getRuntime().availableProcessors() - 1, 1) : threadCntTmp;
	return new Callable<Executor>() {
	@Override
	public Executor call() throws Exception {
	if (maxThreads == 1) {
	return new Executor() {
	@Override
	public void execute(Runnable command) {
	command.run();
	}
	};
	}
	// Always want to go to zero threads when idle
	int coreThreads = 0;
	// idle timeout; make it short to get rid of threads quickly after resolve
	int idleTimeout = 10;
	// use sync queue to force thread creation
	BlockingQueue<Runnable> queue = new SynchronousQueue<>();
	// try to name the threads with useful name
	ThreadFactory threadFactory = new ThreadFactory() {
	@Override
	public Thread newThread(Runnable r) {
	Thread t = new Thread(r, "Resolver thread - " + EquinoxContainerAdaptor.this.toString()); //$NON-NLS-1$
	t.setDaemon(true);
	return t;
	}
	};
	// use a rejection policy that simply runs the task in the current thread once the max threads is reached
	RejectedExecutionHandler rejectHandler = new RejectedExecutionHandler() {
	@Override
	public void rejectedExecution(Runnable r, ThreadPoolExecutor exe) {
	r.run();
	}
	};
	return new ThreadPoolExecutor(coreThreads, maxThreads, idleTimeout, TimeUnit.SECONDS, queue, threadFactory, rejectHandler);
	}
	};
	}

	private static ClassLoader getModuleClassLoaderParent(EquinoxConfiguration configuration) {
	// allow hooks to determine the parent class loader
	for (ClassLoaderHook hook : configuration.getHookRegistry().getClassLoaderHooks()) {
	ClassLoader parent = hook.getModuleClassLoaderParent(configuration);
	if (parent != null) {
	// first one to return non-null wins.
	return parent;
	}
	}
	// DEFAULT behavior:
	// check property for specified parent
	// check the osgi defined property first
	String type = configuration.getConfiguration(Constants.FRAMEWORK_BUNDLE_PARENT);
	if (type == null) {
	type = configuration.getConfiguration(EquinoxConfiguration.PROP_PARENT_CLASSLOADER, Constants.FRAMEWORK_BUNDLE_PARENT_BOOT);
	}

	if (Constants.FRAMEWORK_BUNDLE_PARENT_FRAMEWORK.equalsIgnoreCase(type) \|\| EquinoxConfiguration.PARENT_CLASSLOADER_FWK.equalsIgnoreCase(type)) {
	ClassLoader cl = EquinoxContainer.class.getClassLoader();
	return cl == null ? BOOT_CLASSLOADER : cl;
	}
	if (Constants.FRAMEWORK_BUNDLE_PARENT_APP.equalsIgnoreCase(type))
	return ClassLoader.getSystemClassLoader();
	if (Constants.FRAMEWORK_BUNDLE_PARENT_EXT.equalsIgnoreCase(type)) {
	ClassLoader appCL = ClassLoader.getSystemClassLoader();
	if (appCL != null)
	return appCL.getParent();
	}
	return BOOT_CLASSLOADER;

	}

	@Override
	public ModuleCollisionHook getModuleCollisionHook() {
	return hooks.getModuleCollisionHook();
	}

	@Override
	public ResolverHookFactory getResolverHookFactory() {
	return hooks.getResolverHookFactory();
	}

	@Override
	public void publishContainerEvent(ContainerEvent type, Module module, Throwable error, FrameworkListener... listeners) {
	EquinoxEventPublisher publisher = container.getEventPublisher();
	if (publisher != null) {
	publisher.publishFrameworkEvent(getType(type), module.getBundle(), error, listeners);
	}
	}

	@Override
	public void publishModuleEvent(ModuleEvent type, Module module, Module origin) {
	EquinoxEventPublisher publisher = container.getEventPublisher();
	if (publisher != null) {
	publisher.publishBundleEvent(getType(type), module.getBundle(), origin.getBundle());
	}
	}

	@Override
	public Module createModule(String location, long id, EnumSet<Settings> settings, int startlevel) {
	EquinoxBundle bundle = new EquinoxBundle(id, location, storage.getModuleContainer(), settings, startlevel, container);
	return bundle.getModule();
	}

	@Override
	public SystemModule createSystemModule() {
	return (SystemModule) new EquinoxBundle.SystemBundle(storage.getModuleContainer(), container).getModule();
	}

	@Override
	public String getProperty(String key) {
	return storage.getConfiguration().getConfiguration(key);
	}

	@Override
	public ModuleLoader createModuleLoader(ModuleWiring wiring) {
	if (wiring.getBundle().getBundleId() == 0) {
	ClassLoader cl = EquinoxContainer.class.getClassLoader();
	cl = cl == null ? BOOT_CLASSLOADER : cl;
	return new SystemBundleLoader(wiring, container, cl);
	}
	if ((wiring.getRevision().getTypes() & BundleRevision.TYPE_FRAGMENT) != 0) {
	return new FragmentLoader();
	}
	return new BundleLoader(wiring, container, moduleClassLoaderParent);
	}

	@Override
	public Generation getRevisionInfo(String location, long id) {
	return initial.remove(id);
	}

	@Override
	public void associateRevision(ModuleRevision revision, Object revisionInfo) {
	((Generation) revisionInfo).setRevision(revision);
	}

	@Override
	public void invalidateWiring(ModuleWiring moduleWiring, ModuleLoader current) {
	if (current instanceof BundleLoader) {
	BundleLoader bundleLoader = (BundleLoader) current;
	bundleLoader.close();
	}
	long updatedTimestamp = storage.getModuleDatabase().getRevisionsTimestamp();
	if (System.getSecurityManager() != null && updatedTimestamp != lastSecurityAdminFlush.getAndSet(updatedTimestamp)) {
	storage.getSecurityAdmin().clearCaches();
	List<Module> modules = storage.getModuleContainer().getModules();
	for (Module module : modules) {
	for (ModuleRevision revision : module.getRevisions().getModuleRevisions()) {
	Generation generation = (Generation) revision.getRevisionInfo();
	if (generation != null) {
	ProtectionDomain domain = generation.getDomain();
	if (domain != null) {
	((BundlePermissions) domain.getPermissions()).clearPermissionCache();
	}
	}
	}
	}
	}
	clearManifestCache(moduleWiring);
	}

	private void clearManifestCache(ModuleWiring moduleWiring) {
	boolean frameworkActive = Module.ACTIVE_SET.contains(storage.getModuleContainer().getModule(0).getState());
	ModuleRevision revision = moduleWiring.getRevision();
	Module module = revision.getRevisions().getModule();
	boolean isUninstallingOrUninstalled = State.UNINSTALLED.equals(module.getState()) ^ module.holdsTransitionEventLock(ModuleEvent.UNINSTALLED);
	if (!frameworkActive \|\| !isUninstallingOrUninstalled) {
	// only do this when the framework is not active or when the bundle is not uninstalled
	Generation generation = (Generation) moduleWiring.getRevision().getRevisionInfo();
	generation.clearManifestCache();
	}
	}

	static int getType(ContainerEvent type) {
	switch (type) {
	case ERROR :
	return FrameworkEvent.ERROR;
	case INFO :
	return FrameworkEvent.INFO;
	case WARNING :
	return FrameworkEvent.WARNING;
	case REFRESH :
	return FrameworkEvent.PACKAGES_REFRESHED;
	case START_LEVEL :
	return FrameworkEvent.STARTLEVEL_CHANGED;
	case STARTED :
	return FrameworkEvent.STARTED;
	case STOPPED :
	return FrameworkEvent.STOPPED;
	case STOPPED_REFRESH :
	return FrameworkEvent.STOPPED_SYSTEM_REFRESHED;
	case STOPPED_UPDATE :
	return FrameworkEvent.STOPPED_UPDATE;
	case STOPPED_TIMEOUT :
	return FrameworkEvent.WAIT_TIMEDOUT;
	default :
	// default to error
	return FrameworkEvent.ERROR;
	}
	}

	private int getType(ModuleEvent type) {
	switch (type) {
	case INSTALLED :
	return BundleEvent.INSTALLED;
	case LAZY_ACTIVATION :
	return BundleEvent.LAZY_ACTIVATION;
	case RESOLVED :
	return BundleEvent.RESOLVED;
	case STARTED :
	return BundleEvent.STARTED;
	case STARTING :
	return BundleEvent.STARTING;
	case STOPPING :
	return BundleEvent.STOPPING;
	case STOPPED :
	return BundleEvent.STOPPED;
	case UNINSTALLED :
	return BundleEvent.UNINSTALLED;
	case UNRESOLVED :
	return BundleEvent.UNRESOLVED;
	case UPDATED :
	return BundleEvent.UPDATED;
	default :
	// TODO log error?
	return 0;
	}
	}

	@Override
	public void refreshedSystemModule() {
	storage.getConfiguration().setConfiguration(EquinoxConfiguration.PROP_FORCED_RESTART, "true"); //$NON-NLS-1$
	}

	@Override
	public String toString() {
	return container.toString();
	}

	@Override
	public void updatedDatabase() {
	StorageSaver saver = container.getStorageSaver();
	if (saver == null)
	return;
	saver.save();
	}

	@Override
	public void initBegin() {
	hooks.initBegin();
	}

	@Override
	public void initEnd() {
	hooks.initEnd();
	}

	@Override
	public DebugOptions getDebugOptions() {
	return container.getConfiguration().getDebugOptions();
	}

	@Override
	public Executor getResolverExecutor() {
	return executor.getInitialized(lazyExecutorCreator);
	}

	@Override
	public ScheduledExecutorService getScheduledExecutor() {
	return container.getScheduledExecutor();
	}

	public void shutdownResolverExecutor() {
	Executor current = executor.getAndClear();
	if (current instanceof ExecutorService) {
	((ExecutorService) current).shutdown();
	}
	}

	@Override
	public ModuleRevisionBuilder adaptModuleRevisionBuilder(ModuleEvent operation, Module origin, ModuleRevisionBuilder builder, Object revisionInfo) {
	Generation generation = (Generation) revisionInfo;
	return generation.adaptModuleRevisionBuilder(operation, origin, builder);
	}
	}