| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.felix.framework; |
| |
| import org.osgi.framework.launch.Framework; |
| import java.io.*; |
| import java.net.*; |
| import java.security.*; |
| import java.util.*; |
| import java.util.Map.Entry; |
| import org.apache.felix.framework.ModuleImpl.FragmentRequirement; |
| import org.apache.felix.framework.ServiceRegistry.ServiceRegistryCallbacks; |
| import org.apache.felix.framework.cache.BundleArchive; |
| import org.apache.felix.framework.cache.BundleCache; |
| import org.apache.felix.framework.capabilityset.Attribute; |
| import org.apache.felix.framework.capabilityset.Capability; |
| import org.apache.felix.framework.capabilityset.CapabilitySet; |
| import org.apache.felix.framework.capabilityset.Directive; |
| import org.apache.felix.framework.resolver.Module; |
| import org.apache.felix.framework.capabilityset.Requirement; |
| import org.apache.felix.framework.capabilityset.SimpleFilter; |
| import org.apache.felix.framework.resolver.Wire; |
| import org.apache.felix.framework.ext.SecurityProvider; |
| import org.apache.felix.framework.resolver.ResolveException; |
| import org.apache.felix.framework.resolver.Resolver; |
| import org.apache.felix.framework.resolver.ResolverImpl; |
| import org.apache.felix.framework.util.EventDispatcher; |
| import org.apache.felix.framework.util.FelixConstants; |
| import org.apache.felix.framework.util.ListenerHookInfoImpl; |
| import org.apache.felix.framework.util.MapToDictionary; |
| import org.apache.felix.framework.util.SecureAction; |
| import org.apache.felix.framework.util.ShrinkableCollection; |
| import org.apache.felix.framework.util.StringMap; |
| import org.apache.felix.framework.util.ThreadGate; |
| import org.apache.felix.framework.util.Util; |
| import org.apache.felix.framework.util.manifestparser.R4LibraryClause; |
| import org.apache.felix.framework.util.manifestparser.RequirementImpl; |
| import org.osgi.framework.AdminPermission; |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleActivator; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.BundleEvent; |
| import org.osgi.framework.BundleException; |
| import org.osgi.framework.BundleListener; |
| import org.osgi.framework.BundleReference; |
| import org.osgi.framework.Constants; |
| import org.osgi.framework.Filter; |
| import org.osgi.framework.FrameworkEvent; |
| import org.osgi.framework.FrameworkListener; |
| import org.osgi.framework.FrameworkUtil; |
| import org.osgi.framework.InvalidSyntaxException; |
| import org.osgi.framework.ServiceEvent; |
| import org.osgi.framework.ServiceException; |
| import org.osgi.framework.ServiceFactory; |
| import org.osgi.framework.ServiceListener; |
| import org.osgi.framework.ServicePermission; |
| import org.osgi.framework.ServiceReference; |
| import org.osgi.framework.ServiceRegistration; |
| import org.osgi.framework.hooks.service.FindHook; |
| import org.osgi.framework.hooks.service.ListenerHook; |
| import org.osgi.service.packageadmin.ExportedPackage; |
| import org.osgi.service.startlevel.StartLevel; |
| |
| public class Felix extends BundleImpl implements Framework |
| { |
| // The secure action used to do privileged calls |
| static final SecureAction m_secureAction = new SecureAction(); |
| |
| // The extension manager to handle extension bundles |
| ExtensionManager m_extensionManager; |
| |
| // Logging related member variables. |
| private final Logger m_logger; |
| // Immutable config properties. |
| private final Map m_configMap; |
| // Mutable configuration properties passed into constructor. |
| private final Map m_configMutableMap; |
| |
| // MODULE FACTORY. |
| private final FelixResolverState m_resolverState; |
| private final FelixResolver m_felixResolver; |
| |
| // Lock object used to determine if an individual bundle |
| // lock or the global lock can be acquired. |
| private final Object[] m_bundleLock = new Object[0]; |
| // Keeps track of threads wanting to acquire the global lock. |
| private final List m_globalLockWaitersList = new ArrayList(); |
| // The thread currently holding the global lock. |
| private Thread m_globalLockThread = null; |
| // How many times the global lock was acquired by the thread holding |
| // the global lock; if this value is zero, then it means the global |
| // lock is free. |
| private int m_globalLockCount = 0; |
| |
| // Maps a bundle location to a bundle location; |
| // used to reserve a location when installing a bundle. |
| private final Map m_installRequestMap = new HashMap(); |
| // This lock must be acquired to modify m_installRequestMap; |
| // to help avoid deadlock this lock as priority 1 and should |
| // be acquired before locks with lower priority. |
| private final Object[] m_installRequestLock_Priority1 = new Object[0]; |
| |
| // Contains two maps, one mapping a String bundle location to a bundle |
| // and the other mapping a Long bundle identifier to a bundle. |
| // CONCURRENCY: Access guarded by the global lock for writes, |
| // but no lock for reads since it is copy on write. |
| private volatile Map[] m_installedBundles; |
| private static final int LOCATION_MAP_IDX = 0; |
| private static final int IDENTIFIER_MAP_IDX = 1; |
| // An array of uninstalled bundles before a refresh occurs. |
| // CONCURRENCY: Access guarded by the global lock for writes, |
| // but no lock for reads since it is copy on write. |
| private volatile List<BundleImpl> m_uninstalledBundles; |
| |
| // Framework's active start level. |
| private volatile int m_activeStartLevel = FelixConstants.FRAMEWORK_INACTIVE_STARTLEVEL; |
| // Framework's target start level. |
| // Normally the target start will equal the active start level, except |
| // whem the start level is changing, in which case the target start level |
| // will report the new start level while the active start level will report |
| // the old start level. Once the start level change is complete, the two |
| // will become equal again. This is necessary because the spec says the old |
| // start level should be reported until the start level change is complete, |
| // but we need to effectively enact the target start level immediately to |
| // avoid race conditions to restart stopped bundles. |
| private volatile int m_targetStartLevel = FelixConstants.FRAMEWORK_INACTIVE_STARTLEVEL; |
| |
| // Local bundle cache. |
| private BundleCache m_cache = null; |
| |
| // System bundle activator list. |
| List m_activatorList = null; |
| |
| // Next available bundle identifier. |
| private long m_nextId = 1L; |
| private final Object m_nextIdLock = new Object[0]; |
| |
| // List of event listeners. |
| private EventDispatcher m_dispatcher = null; |
| |
| // Service registry. |
| private ServiceRegistry m_registry = null; |
| |
| // Reusable bundle URL stream handler. |
| private final URLStreamHandler m_bundleStreamHandler; |
| |
| // Boot package delegation. |
| private final String[] m_bootPkgs; |
| private final boolean[] m_bootPkgWildcards; |
| |
| // Shutdown thread. |
| private Thread m_shutdownThread = null; |
| private volatile ThreadGate m_shutdownGate = null; |
| |
| // Security Manager created by the framework |
| private SecurityManager m_securityManager = null; |
| |
| /** |
| * <p> |
| * This constructor creates a framework instance with a specified <tt>Map</tt> |
| * of configuration properties. Configuration properties are used internally |
| * by the framework to alter its default behavior. The configuration properties |
| * should have a <tt>String</tt> key and an <tt>Object</tt> value. The passed |
| * in <tt>Map</tt> is copied by the framework and all keys are converted to |
| * <tt>String</tt>s. |
| * </p> |
| * <p> |
| * Configuration properties are generally the sole means to configure the |
| * framework's default behavior; the framework does not typically refer to |
| * any system properties for configuration information. If a <tt>Map</tt> is |
| * supplied to this method for configuration properties, then the framework |
| * will consult the <tt>Map</tt> instance for any and all configuration |
| * properties. It is possible to specify a <tt>null</tt> for the configuration |
| * property map, in which case the framework will use its default behavior |
| * in all cases. |
| * </p> |
| * <p> |
| * The following configuration properties can be specified (properties starting |
| * with "<tt>felix</tt>" are specific to Felix, while those starting with |
| * "<tt>org.osgi</tt>" are standard OSGi properties): |
| * </p> |
| * <ul> |
| * <li><tt>org.osgi.framework.storage</tt> - Sets the directory to use as |
| * the bundle cache; by default bundle cache directory is |
| * <tt>felix-cache</tt> in the current working directory. The value |
| * should be a valid directory name. The directory name can be either absolute |
| * or relative. Relative directory names are relative to the current working |
| * directory. The specified directory will be created if it does |
| * not exist. |
| * </li> |
| * <li><tt>org.osgi.framework.storage.clean</tt> - Determines whether the |
| * bundle cache is flushed. The value can either be "<tt>none</tt>" |
| * or "<tt>onFirstInit</tt>", where "<tt>none</tt>" does not flush |
| * the bundle cache and "<tt>onFirstInit</tt>" flushes the bundle |
| * cache when the framework instance is first initialized. The default |
| * value is "<tt>none</tt>". |
| * </li> |
| * <li><tt>felix.cache.rootdir</tt> - Sets the root directory to use to |
| * calculate the bundle cache directory for relative directory names. If |
| * <tt>org.osgi.framework.storage</tt> is set to a relative name, by |
| * default it is relative to the current working directory. If this |
| * property is set, then it will be calculated as being relative to |
| * the specified root directory. |
| * </li> |
| * <li><tt>felix.cache.bufsize</tt> - Sets the buffer size to be used by |
| * the cache; the default value is 4096. The integer value of this |
| * string provides control over the size of the internal buffer of the |
| * disk cache for performance reasons. |
| * </li> |
| * <li><tt>org.osgi.framework.system.packages</tt> - Specifies a |
| * comma-delimited list of packages that should be exported via the |
| * System Bundle from the parent class loader. The framework will set |
| * this to a reasonable default. If the value is specified, it |
| * replaces any default value. |
| * </li> |
| * <li><tt>org.osgi.framework.system.packages.extra</tt> - Specifies a |
| * comma-delimited list of packages that should be exported via the |
| * System Bundle from the parent class loader in addition to the |
| * packages in <tt>org.osgi.framework.system.packages</tt>. The default |
| * value is empty. If a value is specified, it is appended to the list |
| * of default or specified packages in |
| * <tt>org.osgi.framework.system.packages</tt>. |
| * </li> |
| * <li><tt>org.osgi.framework.bootdelegation</tt> - Specifies a |
| * comma-delimited list of packages that should be made implicitly |
| * available to all bundles from the parent class loader. It is |
| * recommended not to use this property since it breaks modularity. |
| * The default value is empty. |
| * </li> |
| * <li><tt>felix.systembundle.activators</tt> - A <tt>List</tt> of |
| * <tt>BundleActivator</tt> instances that are started/stopped when |
| * the System Bundle is started/stopped. The specified instances will |
| * receive the System Bundle's <tt>BundleContext</tt> when invoked. |
| * </li> |
| * <li><tt>felix.log.logger</tt> - An instance of <tt>Logger</tt> that the |
| * framework uses as its default logger. |
| * </li> |
| * <li><tt>felix.log.level</tt> - An integer value indicating the degree |
| * of logging reported by the framework; the higher the value the more |
| * logging is reported. If zero ('0') is specified, then logging is |
| * turned off completely. The log levels match those specified in the |
| * OSGi Log Service (i.e., 1 = error, 2 = warning, 3 = information, |
| * and 4 = debug). The default value is 1. |
| * </li> |
| * <li><tt>org.osgi.framework.startlevel.beginning</tt> - The initial |
| * start level of the framework once it starts execution; the default |
| * value is 1. |
| * </li> |
| * <li><tt>felix.startlevel.bundle</tt> - The default start level for |
| * newly installed bundles; the default value is 1. |
| * </li> |
| * <li><tt>felix.service.urlhandlers</tt> - Flag to indicate whether |
| * to activate the URL Handlers service for the framework instance; |
| * the default value is "<tt>true</tt>". Activating the URL Handlers |
| * service will result in the <tt>URL.setURLStreamHandlerFactory()</tt> |
| * and <tt>URLConnection.setContentHandlerFactory()</tt> being called. |
| * </li> |
| * <li><tt>felix.fragment.validation</tt> - Determines if installing |
| * unsupported fragment bundles throws an exception or logs a warning. |
| * Possible values are "<tt>exception</tt>" or "<tt>warning</tt>". The |
| * default value is "<tt>exception</tt>". |
| * </ul> |
| * <p> |
| * The <a href="Main.html"><tt>Main</tt></a> class implements some |
| * functionality for default property file handling, which makes it |
| * possible to specify configuration properties and framework properties |
| * in files that are automatically loaded when starting the framework. If you |
| * plan to create your own framework instance, you may be |
| * able to take advantage of the features it provides; refer to its |
| * class documentation for more information. |
| * </p> |
| * <p> |
| * The framework is not actually started until the <tt>start()</tt> method |
| * is called. |
| * </p> |
| * |
| * @param configMap A map for obtaining configuration properties, |
| * may be <tt>null</tt>. |
| **/ |
| public Felix(Map configMap) |
| { |
| super(); |
| // Copy the configuration properties; convert keys to strings. |
| m_configMutableMap = new StringMap(false); |
| if (configMap != null) |
| { |
| for (Iterator i = configMap.entrySet().iterator(); i.hasNext(); ) |
| { |
| Map.Entry entry = (Map.Entry) i.next(); |
| m_configMutableMap.put(entry.getKey().toString(), entry.getValue()); |
| } |
| } |
| m_configMap = createUnmodifiableMap(m_configMutableMap); |
| |
| // Create logger with appropriate log level. Even though the |
| // logger needs the system bundle's context for tracking log |
| // services, it is created now because it is needed before |
| // the system bundle is activated. The system bundle's context |
| // will be set in the init() method after the system bundle |
| // is activated. |
| if (m_configMutableMap.get(FelixConstants.LOG_LOGGER_PROP) != null) |
| { |
| m_logger = (Logger) m_configMutableMap.get(FelixConstants.LOG_LOGGER_PROP); |
| } |
| else |
| { |
| m_logger = new Logger(); |
| } |
| try |
| { |
| m_logger.setLogLevel( |
| Integer.parseInt( |
| (String) m_configMutableMap.get(FelixConstants.LOG_LEVEL_PROP))); |
| } |
| catch (NumberFormatException ex) |
| { |
| // Ignore and just use the default logging level. |
| } |
| |
| // Initialize framework properties. |
| initializeFrameworkProperties(); |
| |
| // Read the boot delegation property and parse it. |
| String s = (m_configMap == null) |
| ? null |
| : (String) m_configMap.get(Constants.FRAMEWORK_BOOTDELEGATION); |
| s = (s == null) ? "java.*" : s + ",java.*"; |
| StringTokenizer st = new StringTokenizer(s, " ,"); |
| m_bootPkgs = new String[st.countTokens()]; |
| m_bootPkgWildcards = new boolean[m_bootPkgs.length]; |
| for (int i = 0; i < m_bootPkgs.length; i++) |
| { |
| s = st.nextToken(); |
| if (s.equals("*") || s.endsWith(".*")) |
| { |
| m_bootPkgWildcards[i] = true; |
| s = s.substring(0, s.length() - 1); |
| } |
| m_bootPkgs[i] = s; |
| } |
| |
| // Create default bundle stream handler. |
| m_bundleStreamHandler = new URLHandlersBundleStreamHandler(this); |
| |
| // Create a resolver and its state. |
| m_resolverState = new FelixResolverState( |
| m_logger, (String) m_configMap.get(Constants.FRAMEWORK_EXECUTIONENVIRONMENT)); |
| m_felixResolver = new FelixResolver( |
| new ResolverImpl(m_logger), m_resolverState); |
| |
| // Create the extension manager, which we will use as the module |
| // definition for creating the system bundle module. |
| m_extensionManager = new ExtensionManager(m_logger, this); |
| try |
| { |
| addModule(m_extensionManager.getModule()); |
| } |
| catch (Exception ex) |
| { |
| // This should not throw an exception, but if so, lets convert it to |
| // a runtime exception. |
| throw new RuntimeException(ex.getMessage()); |
| } |
| } |
| |
| Logger getLogger() |
| { |
| return m_logger; |
| } |
| |
| Map getConfig() |
| { |
| return m_configMap; |
| } |
| |
| FelixResolver getResolver() |
| { |
| return m_felixResolver; |
| } |
| |
| FelixResolverState getResolverState() |
| { |
| return m_resolverState; |
| } |
| |
| URLStreamHandler getBundleStreamHandler() |
| { |
| return m_bundleStreamHandler; |
| } |
| |
| String[] getBootPackages() |
| { |
| return m_bootPkgs; |
| } |
| |
| boolean[] getBootPackageWildcards() |
| { |
| return m_bootPkgWildcards; |
| } |
| |
| private Map createUnmodifiableMap(Map mutableMap) |
| { |
| Map result = Collections.unmodifiableMap(mutableMap); |
| |
| // Work around a bug in certain version of J9 where a call to |
| // Collections.unmodifiableMap().keySet().iterator() throws |
| // a NoClassDefFoundError. We try to detect this and return |
| // the given mutableMap instead. |
| try |
| { |
| result.keySet().iterator(); |
| } |
| catch (NoClassDefFoundError ex) |
| { |
| return mutableMap; |
| } |
| |
| return result; |
| } |
| |
| // This overrides the default behavior of BundleImpl.getFramework() |
| // to return "this", since the system bundle is the framework. |
| Felix getFramework() |
| { |
| return this; |
| } |
| |
| public long getBundleId() |
| { |
| return 0; |
| } |
| |
| public long getLastModified() |
| { |
| return 0; |
| } |
| |
| void setLastModified(long l) |
| { |
| // Ignore. |
| } |
| |
| String _getLocation() |
| { |
| return Constants.SYSTEM_BUNDLE_LOCATION; |
| } |
| |
| public int getPersistentState() |
| { |
| return Bundle.ACTIVE; |
| } |
| |
| public void setPersistentStateInactive() |
| { |
| // Ignore. |
| } |
| |
| public void setPersistentStateActive() |
| { |
| // Ignore. |
| } |
| |
| public void setPersistentStateUninstalled() |
| { |
| // Ignore. |
| } |
| |
| /** |
| * Overrides standard <tt>BundleImpl.getStartLevel()</tt> behavior to |
| * always return zero for the system bundle. |
| * @param defaultLevel This parameter is ignored by the system bundle. |
| * @return Always returns zero. |
| **/ |
| int getStartLevel(int defaultLevel) |
| { |
| return 0; |
| } |
| |
| /** |
| * Overrides standard <tt>BundleImpl.setStartLevel()</tt> behavior to |
| * always throw an exception since the system bundle's start level cannot |
| * be changed. |
| * @param level This parameter is ignored by the system bundle. |
| * @throws IllegalArgumentException Always throws exception since system |
| * bundle's start level cannot be changed. |
| **/ |
| void setStartLevel(int level) |
| { |
| throw new IllegalArgumentException("Cannot set the system bundle's start level."); |
| } |
| |
| public boolean hasPermission(Object obj) |
| { |
| return true; |
| } |
| |
| /** |
| * This method initializes the framework, which is comprised of resolving |
| * the system bundle, reloading any cached bundles, and activating the system |
| * bundle. The framework is left in the <tt>Bundle.STARTING</tt> state and |
| * reloaded bundles are in the <tt>Bundle.INSTALLED</tt> state. After |
| * successfully invoking this method, <tt>getBundleContext()</tt> will |
| * return a valid <tt>BundleContext</tt> for the system bundle. To finish |
| * starting the framework, invoke the <tt>start()</tt> method. |
| * |
| * @throws org.osgi.framework.BundleException if any error occurs. |
| **/ |
| public void init() throws BundleException |
| { |
| // The system bundle can only be initialized if it currently isn't started. |
| acquireBundleLock(this, |
| Bundle.INSTALLED | Bundle.RESOLVED | Bundle.STARTING | Bundle.ACTIVE); |
| try |
| { |
| if ((getState() == Bundle.INSTALLED) || (getState() == Bundle.RESOLVED)) |
| { |
| String security = (String) m_configMap.get(Constants.FRAMEWORK_SECURITY); |
| if (security != null) |
| { |
| if (System.getSecurityManager() != null) |
| { |
| throw new SecurityException("SecurityManager already installed"); |
| } |
| security = security.trim(); |
| if (Constants.FRAMEWORK_SECURITY_OSGI.equalsIgnoreCase(security) || (security.length() == 0)) |
| { |
| // TODO: SECURITY - we only need our own security manager to convert the exceptions |
| // because the 4.2.0 ct does expect them like this in one case. |
| System.setSecurityManager(m_securityManager = new SecurityManager() |
| { |
| public void checkPermission(Permission perm) |
| { |
| try |
| { |
| super.checkPermission(perm); |
| } |
| catch (AccessControlException ex) |
| { |
| throw new SecurityException(ex); |
| } |
| } |
| }); |
| } |
| else |
| { |
| try |
| { |
| System.setSecurityManager(m_securityManager = |
| (SecurityManager) Class.forName(security).newInstance()); |
| } |
| catch (Throwable t) |
| { |
| throw new SecurityException("Unable to install custom SecurityManager: " + security, t); |
| } |
| } |
| } |
| // Get any system bundle activators. |
| m_activatorList = (List) m_configMutableMap.get(FelixConstants.SYSTEMBUNDLE_ACTIVATORS_PROP); |
| m_activatorList = (m_activatorList == null) ? new ArrayList() : new ArrayList(m_activatorList); |
| |
| // Initialize event dispatcher. |
| m_dispatcher = EventDispatcher.start(m_logger); |
| |
| // Create the bundle cache, if necessary, so that we can reload any |
| // installed bundles. |
| m_cache = (BundleCache) m_configMutableMap.get( |
| FelixConstants.FRAMEWORK_BUNDLECACHE_IMPL); |
| if (m_cache == null) |
| { |
| try |
| { |
| m_cache = new BundleCache(m_logger, m_configMap); |
| } |
| catch (Exception ex) |
| { |
| m_logger.log(Logger.LOG_ERROR, "Error creating bundle cache.", ex); |
| throw new BundleException("Error creating bundle cache.", ex); |
| } |
| } |
| |
| // If this is the first time init is called, check to see if |
| // we need to flush the bundle cache. |
| if (getState() == Bundle.INSTALLED) |
| { |
| String clean = (String) m_configMap.get(Constants.FRAMEWORK_STORAGE_CLEAN); |
| if ((clean != null) |
| && clean.equalsIgnoreCase(Constants.FRAMEWORK_STORAGE_CLEAN_ONFIRSTINIT)) |
| { |
| try |
| { |
| m_cache.delete(); |
| } |
| catch (Exception ex) |
| { |
| throw new BundleException("Unable to flush bundle cache.", ex); |
| } |
| } |
| } |
| |
| // Initialize installed bundle data structures. |
| Map[] maps = new Map[] { |
| new HashMap<String, BundleImpl>(1), |
| new TreeMap<Long, BundleImpl>() |
| }; |
| m_uninstalledBundles = new ArrayList<BundleImpl>(0); |
| |
| // Add the system bundle to the set of installed bundles. |
| maps[LOCATION_MAP_IDX].put(_getLocation(), this); |
| maps[IDENTIFIER_MAP_IDX].put(new Long(0), this); |
| m_installedBundles = maps; |
| |
| // Manually resolve the system bundle, which will cause its |
| // state to be set to RESOLVED. |
| try |
| { |
| m_felixResolver.resolve(getCurrentModule()); |
| } |
| catch (ResolveException ex) |
| { |
| // This should never happen. |
| throw new BundleException( |
| "Unresolved constraint in System Bundle:" |
| + ex.getRequirement()); |
| } |
| |
| // Reload the cached bundles before creating and starting the |
| // system bundle, since we want all cached bundles to be reloaded |
| // when we activate the system bundle and any subsequent system |
| // bundle activators passed into the framework constructor. |
| BundleArchive[] archives = null; |
| |
| // First get cached bundle identifiers. |
| try |
| { |
| archives = m_cache.getArchives(); |
| } |
| catch (Exception ex) |
| { |
| m_logger.log(Logger.LOG_ERROR, "Unable to list saved bundles.", ex); |
| archives = null; |
| } |
| |
| // Now load all cached bundles. |
| for (int i = 0; (archives != null) && (i < archives.length); i++) |
| { |
| try |
| { |
| // Keep track of the max bundle ID currently in use since we |
| // will need to use this as our next bundle ID value if the |
| // persisted value cannot be read. |
| m_nextId = Math.max(m_nextId, archives[i].getId() + 1); |
| |
| // It is possible that a bundle in the cache was previously |
| // uninstalled, but not completely deleted (perhaps because |
| // of a crash or a locked file), so if we see an archive |
| // with an UNINSTALLED persistent state, then try to remove |
| // it now. |
| if (archives[i].getPersistentState() == Bundle.UNINSTALLED) |
| { |
| archives[i].closeAndDelete(); |
| } |
| // Otherwise re-install the cached bundle. |
| else |
| { |
| // Install the cached bundle. |
| installBundle( |
| archives[i].getId(), archives[i].getLocation(), archives[i], null); |
| } |
| } |
| catch (Exception ex) |
| { |
| fireFrameworkEvent(FrameworkEvent.ERROR, this, ex); |
| try |
| { |
| m_logger.log( |
| Logger.LOG_ERROR, |
| "Unable to re-install " + archives[i].getLocation(), |
| ex); |
| } |
| catch (Exception ex2) |
| { |
| m_logger.log( |
| Logger.LOG_ERROR, |
| "Unable to re-install cached bundle.", |
| ex); |
| } |
| // TODO: FRAMEWORK - Perhaps we should remove the cached bundle? |
| } |
| } |
| |
| // Now that we have loaded all cached bundles and have determined the |
| // max bundle ID of cached bundles, we need to try to load the next |
| // bundle ID from persistent storage. In case of failure, we should |
| // keep the max value. |
| m_nextId = Math.max(m_nextId, loadNextId()); |
| |
| // Create service registry. |
| m_registry = new ServiceRegistry(m_logger, new ServiceRegistryCallbacks() { |
| public void serviceChanged(ServiceEvent event, Dictionary oldProps) |
| { |
| fireServiceEvent(event, oldProps); |
| } |
| }); |
| m_dispatcher.setServiceRegistry(m_registry); |
| |
| // The framework is now in its startup sequence. |
| setBundleStateAndNotify(this, Bundle.STARTING); |
| |
| // Now it is possible for threads to wait for the framework to stop, |
| // so create a gate for that purpose. |
| m_shutdownGate = new ThreadGate(); |
| |
| // Create system bundle activator and bundle context so we can activate it. |
| setActivator(new SystemBundleActivator()); |
| setBundleContext(new BundleContextImpl(m_logger, this, this)); |
| try |
| { |
| Felix.m_secureAction.startActivator( |
| getActivator(), _getBundleContext()); |
| } |
| catch (Throwable ex) |
| { |
| EventDispatcher.shutdown(); |
| m_logger.log(Logger.LOG_ERROR, "Unable to start system bundle.", ex); |
| throw new RuntimeException("Unable to start system bundle."); |
| } |
| |
| // Now that the system bundle is successfully created we can give |
| // its bundle context to the logger so that it can track log services. |
| m_logger.setSystemBundleContext(_getBundleContext()); |
| } |
| } |
| finally |
| { |
| releaseBundleLock(this); |
| } |
| } |
| |
| /** |
| * This method starts the framework instance, which will transition the |
| * framework from start level 0 to its active start level as specified in |
| * its configuration properties (1 by default). If the <tt>init()</tt> was |
| * not explicitly invoked before calling this method, then it will be |
| * implicitly invoked before starting the framework. |
| * |
| * @throws org.osgi.framework.BundleException if any error occurs. |
| **/ |
| public void start() throws BundleException |
| { |
| int startLevel = FelixConstants.FRAMEWORK_DEFAULT_STARTLEVEL; |
| |
| acquireBundleLock(this, |
| Bundle.INSTALLED | Bundle.RESOLVED | Bundle.STARTING | Bundle.ACTIVE); |
| try |
| { |
| // Initialize if necessary. |
| if ((getState() == Bundle.INSTALLED) || (getState() == Bundle.RESOLVED)) |
| { |
| init(); |
| } |
| |
| // If the current state is STARTING, then the system bundle can be started. |
| if (getState() == Bundle.STARTING) |
| { |
| // Get the framework's default start level. |
| String s = (String) m_configMap.get(Constants.FRAMEWORK_BEGINNING_STARTLEVEL); |
| if (s != null) |
| { |
| try |
| { |
| startLevel = Integer.parseInt(s); |
| } |
| catch (NumberFormatException ex) |
| { |
| startLevel = FelixConstants.FRAMEWORK_DEFAULT_STARTLEVEL; |
| } |
| } |
| |
| // Set the start level using the start level service; |
| // this ensures that all start level requests are |
| // serialized. |
| StartLevel sl = null; |
| try |
| { |
| sl = (StartLevel) getService( |
| getBundle(0), getServiceReferences((BundleImpl) getBundle(0), |
| StartLevel.class.getName(), null, true)[0]); |
| } |
| catch (InvalidSyntaxException ex) |
| { |
| // Should never happen. |
| } |
| |
| if (sl instanceof StartLevelImpl) |
| { |
| ((StartLevelImpl) sl).setStartLevelAndWait(startLevel); |
| } |
| else |
| { |
| sl.setStartLevel(startLevel); |
| } |
| |
| // The framework is now running. |
| setBundleStateAndNotify(this, Bundle.ACTIVE); |
| } |
| } |
| finally |
| { |
| releaseBundleLock(this); |
| } |
| |
| // Fire started event for system bundle. |
| fireBundleEvent(BundleEvent.STARTED, this); |
| |
| // Send a framework event to indicate the framework has started. |
| fireFrameworkEvent(FrameworkEvent.STARTED, this, null); |
| } |
| |
| public void start(int options) throws BundleException |
| { |
| // TODO: FRAMEWORK - For now, ignore all options when starting the |
| // system bundle. |
| start(); |
| } |
| |
| /** |
| * This method asynchronously shuts down the framework, it must be called at the |
| * end of a session in order to shutdown all active bundles. |
| **/ |
| public void stop() throws BundleException |
| { |
| Object sm = System.getSecurityManager(); |
| |
| if (sm != null) |
| { |
| ((SecurityManager) sm).checkPermission(new AdminPermission(this, |
| AdminPermission.EXECUTE)); |
| } |
| |
| stopBundle(this, true); |
| } |
| |
| public void stop(int options) throws BundleException |
| { |
| // TODO: FRAMEWORK - For now, ignore all options when stopping the |
| // system bundle. |
| stop(); |
| } |
| |
| /** |
| * This method will cause the calling thread to block until the framework |
| * shuts down. |
| * @param timeout A timeout value. |
| * @throws java.lang.InterruptedException If the thread was interrupted. |
| **/ |
| public FrameworkEvent waitForStop(long timeout) throws InterruptedException |
| { |
| // Throw exception if timeout is negative. |
| if (timeout < 0) |
| { |
| throw new IllegalArgumentException("Timeout cannot be negative."); |
| } |
| |
| // If there is a gate, wait on it; otherwise, return immediately. |
| // Grab a copy of the gate, since it is volatile. |
| ThreadGate gate = m_shutdownGate; |
| boolean open = false; |
| if (gate != null) |
| { |
| open = gate.await(timeout); |
| } |
| |
| FrameworkEvent event; |
| if (open && (gate.getMessage() != null)) |
| { |
| event = (FrameworkEvent) gate.getMessage(); |
| } |
| else if (!open && (gate != null)) |
| { |
| event = new FrameworkEvent(FrameworkEvent.WAIT_TIMEDOUT, this, null); |
| } |
| else |
| { |
| event = new FrameworkEvent(FrameworkEvent.STOPPED, this, null); |
| } |
| return event; |
| } |
| |
| public void uninstall() throws BundleException |
| { |
| throw new BundleException("Cannot uninstall the system bundle."); |
| } |
| |
| public void update() throws BundleException |
| { |
| update(null); |
| } |
| |
| public void update(InputStream is) throws BundleException |
| { |
| Object sm = System.getSecurityManager(); |
| |
| if (sm != null) |
| { |
| ((SecurityManager) sm).checkPermission(new AdminPermission(this, |
| AdminPermission.EXECUTE)); |
| } |
| |
| // Spec says to close input stream first. |
| try |
| { |
| if (is != null) is.close(); |
| } |
| catch (IOException ex) |
| { |
| m_logger.log(Logger.LOG_WARNING, "Exception closing input stream.", ex); |
| } |
| |
| // Then to stop and restart the framework on a separate thread. |
| new Thread(new Runnable() { |
| public void run() |
| { |
| try |
| { |
| // First acquire the system bundle lock to verify the state. |
| acquireBundleLock(Felix.this, Bundle.STARTING | Bundle.ACTIVE); |
| // Set the reason for the shutdown. |
| m_shutdownGate.setMessage( |
| new FrameworkEvent(FrameworkEvent.STOPPED_UPDATE, Felix.this, null)); |
| // Record the state and stop the system bundle. |
| int oldState = Felix.this.getState(); |
| try |
| { |
| stop(); |
| } |
| catch (BundleException ex) |
| { |
| m_logger.log(Logger.LOG_WARNING, "Exception stopping framework.", ex); |
| } |
| finally |
| { |
| releaseBundleLock(Felix.this); |
| } |
| |
| // Make sure the framework is stopped. |
| try |
| { |
| waitForStop(0); |
| } |
| catch (InterruptedException ex) |
| { |
| m_logger.log(Logger.LOG_WARNING, "Did not wait for framework to stop.", ex); |
| } |
| |
| // Depending on the old state, restart the framework. |
| try |
| { |
| switch (oldState) |
| { |
| case Bundle.STARTING: |
| init(); |
| break; |
| case Bundle.ACTIVE: |
| start(); |
| break; |
| } |
| } |
| catch (BundleException ex) |
| { |
| m_logger.log(Logger.LOG_WARNING, "Exception restarting framework.", ex); |
| } |
| } |
| catch (Exception ex) |
| { |
| m_logger.log(Logger.LOG_WARNING, "Cannot update an inactive framework."); |
| } |
| } |
| }).start(); |
| } |
| |
| public String toString() |
| { |
| return getSymbolicName() + " [" + getBundleId() +"]"; |
| } |
| |
| /** |
| * Returns the active start level of the framework; this method |
| * implements functionality for the Start Level service. |
| * @return The active start level of the framework. |
| **/ |
| int getActiveStartLevel() |
| { |
| return m_activeStartLevel; |
| } |
| |
| /** |
| * Implements the functionality of the <tt>setStartLevel()</tt> |
| * method for the StartLevel service, but does not do the security or |
| * parameter check. The security and parameter check are done in the |
| * StartLevel service implementation because this method is called on |
| * a separate thread and the caller's thread would already be gone if |
| * we did the checks in this method. This method should not be called |
| * directly. |
| * @param requestedLevel The new start level of the framework. |
| **/ |
| void setActiveStartLevel(int requestedLevel) |
| { |
| Bundle[] bundles = null; |
| |
| // Record the target start level immediately and use this for |
| // comparisons for starting/stopping bundles to avoid race |
| // conditions to restart stopped bundles. |
| m_targetStartLevel = requestedLevel; |
| |
| // Do nothing if the requested start level is the same as the |
| // active start level. |
| if (m_targetStartLevel != m_activeStartLevel) |
| { |
| // Synchronization for changing the start level is rather loose. |
| // The framework's active start level is volatile, so no lock is |
| // needed to access it. The install lock is acquired to attain a |
| // sorted snapshot of the currently installed bundles, but then this |
| // lock is freed immediately. No locks are held while processing the |
| // currently installed bundles for starting/stopping based on the new |
| // active start level. The only locking that occurs is for individual |
| // bundles when startBundle()/stopBundle() is called, but this locking |
| // is done in the respective method. |
| // |
| // This approach does mean that it is possible for a for individual |
| // bundle states to change during this operation. For example, bundle |
| // start levels can be changed or bundles can be uninstalled. If a |
| // bundle's start level changes, then it is possible for it to be |
| // processed out of order. Uninstalled bundles are just logged and |
| // ignored. I had a bit of discussion with Peter Kriens about these |
| // issues and he felt they were consistent with the spec, which |
| // intended Start Level to have some leeway. |
| // |
| // Calls to this method are only made by the start level thread, which |
| // serializes framework start level changes. Thus, it is not possible |
| // for two requests to change the framework's start level to interfere |
| // with each other. |
| |
| // Determine if we are lowering or raising the |
| // active start level. |
| boolean lowering = (m_targetStartLevel < m_activeStartLevel); |
| |
| // Acquire global lock. |
| boolean locked = acquireGlobalLock(); |
| if (!locked) |
| { |
| // If the calling thread holds bundle locks, then we might not |
| // be able to get the global lock. |
| throw new IllegalStateException( |
| "Unable to acquire global lock to create bundle snapshot."); |
| } |
| try |
| { |
| // Get a snapshot of all installed bundles. |
| bundles = getBundles(); |
| // Sort the bundles according to sort level for processing. |
| Arrays.sort(bundles, new BundleComparator(lowering)); |
| } |
| finally |
| { |
| releaseGlobalLock(); |
| } |
| |
| // Stop or start the bundles according to the start level. |
| for (int i = 0; (bundles != null) && (i < bundles.length); i++) |
| { |
| BundleImpl impl = (BundleImpl) bundles[i]; |
| |
| // Ignore the system bundle, since its start() and |
| // stop() methods get called explicitly in Felix.start() |
| // and Felix.stop(), respectively. |
| if (impl.getBundleId() == 0) |
| { |
| continue; |
| } |
| |
| // Lock the current bundle. |
| try |
| { |
| acquireBundleLock(impl, |
| Bundle.INSTALLED | Bundle.RESOLVED | Bundle.ACTIVE |
| | Bundle.STARTING | Bundle.STOPPING); |
| } |
| catch (IllegalStateException ex) |
| { |
| // Ignore if the bundle has been uninstalled. |
| if (impl.getState() != Bundle.UNINSTALLED) |
| { |
| fireFrameworkEvent(FrameworkEvent.ERROR, impl, ex); |
| m_logger.log(impl, |
| Logger.LOG_ERROR, |
| "Error locking " + impl._getLocation(), ex); |
| } |
| continue; |
| } |
| |
| try |
| { |
| // Start the bundle if necessary. |
| if (((impl.getPersistentState() == Bundle.ACTIVE) |
| || (impl.getPersistentState() == Bundle.STARTING)) |
| && (impl.getStartLevel(getInitialBundleStartLevel()) |
| <= m_targetStartLevel)) |
| { |
| // Count up the active start level. |
| // TODO: STARTLEVEL - This isn't entirely accurate since a bundle's start |
| // level is written synchronously, if someone were to change a bundle's |
| // start level in the middle of a framework start level change then you |
| // could potentially see the active start level jump around. We really |
| // need to snapshot the existing bundle start levels too. |
| if (m_activeStartLevel != impl.getStartLevel(getInitialBundleStartLevel())) |
| { |
| m_activeStartLevel = impl.getStartLevel(getInitialBundleStartLevel()); |
| } |
| |
| try |
| { |
| // TODO: LAZY - Not sure if this is the best way... |
| int options = Bundle.START_TRANSIENT; |
| options = (impl.getPersistentState() == Bundle.STARTING) |
| ? options | Bundle.START_ACTIVATION_POLICY |
| : options; |
| startBundle(impl, options); |
| } |
| catch (Throwable th) |
| { |
| fireFrameworkEvent(FrameworkEvent.ERROR, impl, th); |
| m_logger.log(impl, |
| Logger.LOG_ERROR, |
| "Error starting " + impl._getLocation(), th); |
| } |
| } |
| // Stop the bundle if necessary. |
| else if (((impl.getState() == Bundle.ACTIVE) |
| || (impl.getState() == Bundle.STARTING)) |
| && (impl.getStartLevel(getInitialBundleStartLevel()) |
| > m_targetStartLevel)) |
| { |
| // Count down the active start level. |
| // TODO: STARTLEVEL - This isn't entirely accurate since a bundle's start |
| // level is written synchronously, if someone were to change a bundle's |
| // start level in the middle of a framework start level change then you |
| // could potentially see the active start level jump around. We really |
| // need to snapshot the existing bundle start levels too. |
| if (m_activeStartLevel != impl.getStartLevel(getInitialBundleStartLevel())) |
| { |
| m_activeStartLevel = impl.getStartLevel(getInitialBundleStartLevel()); |
| } |
| |
| try |
| { |
| stopBundle(impl, false); |
| } |
| catch (Throwable th) |
| { |
| fireFrameworkEvent(FrameworkEvent.ERROR, impl, th); |
| m_logger.log(impl, |
| Logger.LOG_ERROR, |
| "Error stopping " + impl._getLocation(), th); |
| } |
| } |
| } |
| finally |
| { |
| // Always release bundle lock. |
| releaseBundleLock(impl); |
| } |
| // Hint to GC to collect bundle; not sure why this |
| // is necessary, but it appears to help. |
| bundles[i] = null; |
| } |
| |
| m_activeStartLevel = m_targetStartLevel; |
| } |
| |
| if (getState() == Bundle.ACTIVE) |
| { |
| fireFrameworkEvent(FrameworkEvent.STARTLEVEL_CHANGED, this, null); |
| } |
| } |
| |
| /** |
| * Returns the start level into which newly installed bundles will |
| * be placed by default; this method implements functionality for |
| * the Start Level service. |
| * @return The default start level for newly installed bundles. |
| **/ |
| int getInitialBundleStartLevel() |
| { |
| String s = (String) m_configMap.get(FelixConstants.BUNDLE_STARTLEVEL_PROP); |
| |
| if (s != null) |
| { |
| try |
| { |
| int i = Integer.parseInt(s); |
| return (i > 0) ? i : FelixConstants.BUNDLE_DEFAULT_STARTLEVEL; |
| } |
| catch (NumberFormatException ex) |
| { |
| // Ignore and return the default value. |
| } |
| } |
| return FelixConstants.BUNDLE_DEFAULT_STARTLEVEL; |
| } |
| |
| /** |
| * Sets the default start level into which newly installed bundles |
| * will be placed; this method implements functionality for the Start |
| * Level service. |
| * @param startLevel The new default start level for newly installed |
| * bundles. |
| * @throws java.lang.IllegalArgumentException If the specified start |
| * level is not greater than zero. |
| * @throws java.security.SecurityException If the caller does not |
| * have <tt>AdminPermission</tt>. |
| **/ |
| void setInitialBundleStartLevel(int startLevel) |
| { |
| if (startLevel <= 0) |
| { |
| throw new IllegalArgumentException( |
| "Initial start level must be greater than zero."); |
| } |
| |
| m_configMutableMap.put( |
| FelixConstants.BUNDLE_STARTLEVEL_PROP, Integer.toString(startLevel)); |
| } |
| |
| /** |
| * Returns the start level for the specified bundle; this method |
| * implements functionality for the Start Level service. |
| * @param bundle The bundle to examine. |
| * @return The start level of the specified bundle. |
| * @throws java.lang.IllegalArgumentException If the specified |
| * bundle has been uninstalled. |
| **/ |
| int getBundleStartLevel(Bundle bundle) |
| { |
| if (bundle.getState() == Bundle.UNINSTALLED) |
| { |
| throw new IllegalArgumentException("Bundle is uninstalled."); |
| } |
| |
| return ((BundleImpl) bundle).getStartLevel(getInitialBundleStartLevel()); |
| } |
| |
| /** |
| * Sets the start level of the specified bundle; this method |
| * implements functionality for the Start Level service. |
| * @param bundle The bundle whose start level is to be modified. |
| * @param startLevel The new start level of the specified bundle. |
| * @throws java.lang.IllegalArgumentException If the specified |
| * bundle is the system bundle or if the bundle has been |
| * uninstalled. |
| * @throws java.security.SecurityException If the caller does not |
| * have <tt>AdminPermission</tt>. |
| **/ |
| void setBundleStartLevel(Bundle bundle, int startLevel) |
| { |
| // Acquire bundle lock. |
| BundleImpl impl = (BundleImpl) bundle; |
| try |
| { |
| acquireBundleLock(impl, |
| Bundle.INSTALLED | Bundle.RESOLVED | Bundle.ACTIVE |
| | Bundle.STARTING | Bundle.STOPPING); |
| } |
| catch (IllegalStateException ex) |
| { |
| fireFrameworkEvent(FrameworkEvent.ERROR, impl, ex); |
| m_logger.log(impl, |
| Logger.LOG_ERROR, |
| "Error locking " + impl._getLocation(), ex); |
| return; |
| } |
| |
| Throwable rethrow = null; |
| |
| try |
| { |
| if (startLevel >= 1) |
| { |
| // NOTE: The start level was persistently recorded inside |
| // the start level impl because the spec requires it to be |
| // done synchronously. |
| |
| try |
| { |
| // Start the bundle if necessary. |
| if (((impl.getPersistentState() == Bundle.ACTIVE) |
| || (impl.getPersistentState() == Bundle.STARTING)) |
| && (startLevel <= m_targetStartLevel)) |
| { |
| // TODO: LAZY - Not sure if this is the best way... |
| int options = Bundle.START_TRANSIENT; |
| options = (impl.getPersistentState() == Bundle.STARTING) |
| ? options | Bundle.START_ACTIVATION_POLICY |
| : options; |
| startBundle(impl, options); |
| } |
| // Stop the bundle if necessary. |
| else if (((impl.getState() == Bundle.ACTIVE) |
| || (impl.getState() == Bundle.STARTING)) |
| && (startLevel > m_targetStartLevel)) |
| { |
| stopBundle(impl, false); |
| } |
| } |
| catch (Throwable th) |
| { |
| rethrow = th; |
| m_logger.log( |
| impl, |
| Logger.LOG_ERROR, "Error starting/stopping bundle.", th); |
| } |
| } |
| else |
| { |
| m_logger.log( |
| impl, |
| Logger.LOG_WARNING, "Bundle start level must be greater than zero."); |
| } |
| } |
| finally |
| { |
| // Always release bundle lock. |
| releaseBundleLock(impl); |
| } |
| |
| if (rethrow != null) |
| { |
| fireFrameworkEvent(FrameworkEvent.ERROR, bundle, rethrow); |
| } |
| } |
| |
| /** |
| * Returns whether a bundle is persistently started; this is an |
| * method implementation for the Start Level service. |
| * @param bundle The bundle to examine. |
| * @return <tt>true</tt> if the bundle is marked as persistently |
| * started, <tt>false</tt> otherwise. |
| * @throws java.lang.IllegalArgumentException If the specified |
| * bundle has been uninstalled. |
| **/ |
| boolean isBundlePersistentlyStarted(Bundle bundle) |
| { |
| if (bundle.getState() == Bundle.UNINSTALLED) |
| { |
| throw new IllegalArgumentException("Bundle is uninstalled."); |
| } |
| |
| return (((BundleImpl) bundle).getPersistentState() == Bundle.ACTIVE) |
| || (((BundleImpl) bundle).getPersistentState() == Bundle.STARTING); |
| } |
| |
| /** |
| * Returns whether the bundle is using its declared activation policy; |
| * this is an method implementation for the Start Level service. |
| * @param bundle The bundle to examine. |
| * @return <tt>true</tt> if the bundle is using its declared activation |
| * policy, <tt>false</tt> otherwise. |
| * @throws java.lang.IllegalArgumentException If the specified |
| * bundle has been uninstalled. |
| **/ |
| boolean isBundleActivationPolicyUsed(Bundle bundle) |
| { |
| if (bundle.getState() == Bundle.UNINSTALLED) |
| { |
| throw new IllegalArgumentException("Bundle is uninstalled."); |
| } |
| |
| return ((BundleImpl) bundle).isDeclaredActivationPolicyUsed(); |
| } |
| |
| // |
| // Implementation of Bundle interface methods. |
| // |
| |
| /** |
| * Get bundle headers and resolve any localized strings from resource bundles. |
| * @param bundle |
| * @param locale |
| * @return localized bundle headers dictionary. |
| **/ |
| Dictionary getBundleHeaders(BundleImpl bundle, String locale) |
| { |
| return new MapToDictionary(bundle.getCurrentLocalizedHeader(locale)); |
| } |
| |
| /** |
| * Implementation for Bundle.getResource(). |
| **/ |
| URL getBundleResource(BundleImpl bundle, String name) |
| { |
| if (bundle.getState() == Bundle.UNINSTALLED) |
| { |
| throw new IllegalStateException("The bundle is uninstalled."); |
| } |
| else if (Util.isFragment(bundle.getCurrentModule())) |
| { |
| return null; |
| } |
| return bundle.getCurrentModule().getResourceByDelegation(name); |
| } |
| |
| /** |
| * Implementation for Bundle.getResources(). |
| **/ |
| Enumeration getBundleResources(BundleImpl bundle, String name) |
| { |
| if (bundle.getState() == Bundle.UNINSTALLED) |
| { |
| throw new IllegalStateException("The bundle is uninstalled."); |
| } |
| else if (Util.isFragment(bundle.getCurrentModule())) |
| { |
| return null; |
| } |
| return bundle.getCurrentModule().getResourcesByDelegation(name); |
| } |
| |
| /** |
| * Implementation for Bundle.getEntry(). |
| **/ |
| URL getBundleEntry(BundleImpl bundle, String name) |
| { |
| if (bundle.getState() == Bundle.UNINSTALLED) |
| { |
| throw new IllegalStateException("The bundle is uninstalled."); |
| } |
| |
| URL url = bundle.getCurrentModule().getEntry(name); |
| |
| // Some JAR files do not contain directory entries, so if |
| // the entry wasn't found and is a directory, scan the entries |
| // to see if we should synthesize an entry for it. |
| if ((url == null) && name.endsWith("/") && !name.equals("/")) |
| { |
| // Use the entry filter enumeration to search the bundle content |
| // recursively for matching entries and return URLs to them. |
| Enumeration enumeration = |
| new EntryFilterEnumeration(bundle, false, name, "*", true, true); |
| // If the enumeration has elements, then that means we need |
| // to synthesize the directory entry. |
| if (enumeration.hasMoreElements()) |
| { |
| URL entryURL = (URL) enumeration.nextElement(); |
| try |
| { |
| url = new URL(entryURL, ((name.charAt(0) == '/') ? name : "/" + name)); |
| } |
| catch (MalformedURLException ex) |
| { |
| url = null; |
| } |
| } |
| } |
| return url; |
| } |
| |
| /** |
| * Implementation for Bundle.getEntryPaths(). |
| **/ |
| Enumeration getBundleEntryPaths(BundleImpl bundle, String path) |
| { |
| if (bundle.getState() == Bundle.UNINSTALLED) |
| { |
| throw new IllegalStateException("The bundle is uninstalled."); |
| } |
| |
| // Get the entry enumeration from the module content and |
| // create a wrapper enumeration to filter it. |
| Enumeration enumeration = |
| new EntryFilterEnumeration(bundle, false, path, "*", false, false); |
| |
| // Return the enumeration if it has elements. |
| return (!enumeration.hasMoreElements()) ? null : enumeration; |
| } |
| |
| /** |
| * Implementation for Bundle.findEntries(). |
| **/ |
| Enumeration findBundleEntries( |
| BundleImpl bundle, String path, String filePattern, boolean recurse) |
| { |
| // Try to resolve the bundle per the spec. |
| resolveBundles(new Bundle[] { bundle }); |
| |
| // Get the entry enumeration from the module content and |
| // create a wrapper enumeration to filter it. |
| Enumeration enumeration = |
| new EntryFilterEnumeration(bundle, true, path, filePattern, recurse, true); |
| |
| // Return the enumeration if it has elements. |
| return (!enumeration.hasMoreElements()) ? null : enumeration; |
| } |
| |
| ServiceReference[] getBundleRegisteredServices(BundleImpl bundle) |
| { |
| if (bundle.getState() == Bundle.UNINSTALLED) |
| { |
| throw new IllegalStateException("The bundle is uninstalled."); |
| } |
| |
| // Filter list of registered service references. |
| ServiceReference[] refs = m_registry.getRegisteredServices(bundle); |
| |
| return refs; |
| } |
| |
| ServiceReference[] getBundleServicesInUse(Bundle bundle) |
| { |
| // Filter list of "in use" service references. |
| ServiceReference[] refs = m_registry.getServicesInUse(bundle); |
| |
| return refs; |
| } |
| |
| boolean bundleHasPermission(BundleImpl bundle, Object obj) |
| { |
| if (bundle.getState() == Bundle.UNINSTALLED) |
| { |
| throw new IllegalStateException("The bundle is uninstalled."); |
| } |
| |
| if (System.getSecurityManager() != null) |
| { |
| try |
| { |
| return (obj instanceof java.security.Permission) |
| ? impliesBundlePermission( |
| (BundleProtectionDomain) |
| bundle.getProtectionDomain(), |
| (java.security.Permission) obj, true) |
| : false; |
| } |
| catch (Exception ex) |
| { |
| m_logger.log( |
| bundle, |
| Logger.LOG_WARNING, |
| "Exception while evaluating the permission.", |
| ex); |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Implementation for Bundle.loadClass(). |
| **/ |
| Class loadBundleClass(BundleImpl bundle, String name) throws ClassNotFoundException |
| { |
| if (bundle.getState() == Bundle.UNINSTALLED) |
| { |
| throw new IllegalStateException("Bundle is uninstalled"); |
| } |
| else if (Util.isFragment(bundle.getCurrentModule())) |
| { |
| throw new ClassNotFoundException("Fragments cannot load classes."); |
| } |
| else if (bundle.getState() == Bundle.INSTALLED) |
| { |
| try |
| { |
| resolveBundle(bundle); |
| } |
| catch (BundleException ex) |
| { |
| // The spec says we must fire a framework error. |
| fireFrameworkEvent(FrameworkEvent.ERROR, bundle, ex); |
| // Then throw a class not found exception. |
| throw new ClassNotFoundException(name, ex); |
| } |
| } |
| return bundle.getCurrentModule().getClassByDelegation(name); |
| } |
| |
| /** |
| * Implementation for Bundle.start(). |
| **/ |
| void startBundle(BundleImpl bundle, int options) throws BundleException |
| { |
| // CONCURRENCY NOTE: |
| // We will first acquire the bundle lock for the specific bundle |
| // as long as the bundle is INSTALLED, RESOLVED, or ACTIVE. If this |
| // bundle is not yet resolved, then it will be resolved too. In |
| // that case, the global lock will be acquired to make sure no |
| // bundles can be installed or uninstalled during the resolve. |
| |
| int eventType; |
| |
| // Acquire bundle lock. |
| try |
| { |
| acquireBundleLock(bundle, |
| Bundle.INSTALLED | Bundle.RESOLVED | Bundle.STARTING | Bundle.ACTIVE); |
| } |
| catch (IllegalStateException ex) |
| { |
| if (bundle.getState() == Bundle.UNINSTALLED) |
| { |
| throw new IllegalStateException("Cannot start an uninstalled bundle."); |
| } |
| else |
| { |
| throw new BundleException( |
| "Bundle " + bundle |
| + " cannot be started, since it is either starting or stopping."); |
| } |
| } |
| |
| // Record whether the bundle is using its declared activation policy. |
| boolean wasDeferred = bundle.isDeclaredActivationPolicyUsed() |
| && (bundle.getCurrentModule().getDeclaredActivationPolicy() == Module.LAZY_ACTIVATION); |
| bundle.setDeclaredActivationPolicyUsed( |
| (options & Bundle.START_ACTIVATION_POLICY) != 0); |
| |
| BundleException rethrow = null; |
| try |
| { |
| // The spec doesn't say whether it is possible to start an extension |
| // We just do nothing |
| if (bundle.isExtension()) |
| { |
| return; |
| } |
| |
| // As per the OSGi spec, fragment bundles can not be started and must |
| // throw a BundleException when there is an attempt to start one. |
| if (Util.isFragment(bundle.getCurrentModule())) |
| { |
| throw new BundleException("Fragment bundles can not be started."); |
| } |
| |
| // Set and save the bundle's persistent state to active |
| // if we are supposed to record state change. |
| if ((options & Bundle.START_TRANSIENT) == 0) |
| { |
| if ((options & Bundle.START_ACTIVATION_POLICY) != 0) |
| { |
| bundle.setPersistentStateStarting(); |
| } |
| else |
| { |
| bundle.setPersistentStateActive(); |
| } |
| } |
| |
| // Check to see if the bundle's start level is greater than the |
| // the framework's active start level. |
| // TODO: STARTLEVEL - Technically, this is not correct since we could be in the |
| // middle of a framework start level change and we might not have yet |
| // reached the target start level, but we will activate the bundle anyway. |
| // This means the bundle will be running in a higher start level temporarily |
| // until the start level thread catches up. |
| if (bundle.getStartLevel(getInitialBundleStartLevel()) > m_targetStartLevel) |
| { |
| // Throw an exception for transient starts. |
| if ((options & Bundle.START_TRANSIENT) != 0) |
| { |
| throw new BundleException( |
| "Cannot start bundle " + bundle + " because its start level is " |
| + bundle.getStartLevel(getInitialBundleStartLevel()) |
| + ", which is greater than the framework's start level of " |
| + m_targetStartLevel + "."); |
| } |
| // Ignore persistent starts. |
| return; |
| } |
| |
| switch (bundle.getState()) |
| { |
| case Bundle.UNINSTALLED: |
| throw new IllegalStateException("Cannot start an uninstalled bundle."); |
| case Bundle.STARTING: |
| if (!wasDeferred) |
| { |
| throw new BundleException( |
| "Bundle " + bundle |
| + " cannot be started, since it is starting."); |
| } |
| break; |
| case Bundle.STOPPING: |
| throw new BundleException( |
| "Bundle " + bundle |
| + " cannot be started, since it is stopping."); |
| case Bundle.ACTIVE: |
| return; |
| case Bundle.INSTALLED: |
| resolveBundle(bundle); |
| // No break. |
| case Bundle.RESOLVED: |
| // Set the bundle's context. |
| bundle.setBundleContext(new BundleContextImpl(m_logger, this, bundle)); |
| // At this point, no matter if the bundle's activation policy is |
| // eager or deferred, we need to set the bundle's state to STARTING. |
| // We don't fire a BundleEvent here for this state change, since |
| // STARTING events are only fired if we are invoking the activator, |
| // which we may not do if activation is deferred. |
| setBundleStateAndNotify(bundle, Bundle.STARTING); |
| break; |
| } |
| |
| // If the bundle's activation policy is eager or activation has already |
| // been triggered, then activate the bundle immediately. |
| if (!bundle.isDeclaredActivationPolicyUsed() |
| || (bundle.getCurrentModule().getDeclaredActivationPolicy() != Module.LAZY_ACTIVATION) |
| || ((ModuleImpl) bundle.getCurrentModule()).isActivationTriggered()) |
| { |
| // Record the event type for the final event and activate. |
| eventType = BundleEvent.STARTED; |
| // Note that the STARTING event is thrown in the activateBundle() method. |
| try |
| { |
| activateBundle(bundle, false); |
| } |
| catch (BundleException ex) |
| { |
| rethrow = ex; |
| } |
| } |
| // Otherwise, defer bundle activation. |
| else |
| { |
| // Record the event type for the final event. |
| eventType = BundleEvent.LAZY_ACTIVATION; |
| } |
| |
| // We still need to fire the STARTED event, but we will do |
| // it later so we can release the bundle lock. |
| } |
| finally |
| { |
| // Release bundle lock. |
| releaseBundleLock(bundle); |
| } |
| |
| // If there was no exception, then we should fire the STARTED |
| // or LAZY_ACTIVATION event here without holding the lock. Otherwise, |
| // fire STOPPED and rethrow exception. |
| if (rethrow == null) |
| { |
| fireBundleEvent(eventType, bundle); |
| } |
| else |
| { |
| fireBundleEvent(BundleEvent.STOPPED, bundle); |
| throw rethrow; |
| } |
| } |
| |
| void activateBundle(BundleImpl bundle, boolean fireEvent) throws BundleException |
| { |
| // CONCURRENCY NOTE: |
| // We will first acquire the bundle lock for the specific bundle |
| // as long as the bundle is INSTALLED, RESOLVED, or ACTIVE. If this |
| // bundle is not yet resolved, then it will be resolved too. In |
| // that case, the global lock will be acquired to make sure no |
| // bundles can be installed or uninstalled during the resolve. |
| |
| // Acquire bundle lock. |
| try |
| { |
| acquireBundleLock(bundle, Bundle.STARTING | Bundle.ACTIVE); |
| } |
| catch (IllegalStateException ex) |
| { |
| throw new IllegalStateException( |
| "Activation only occurs for bundles in STARTING state."); |
| } |
| |
| try |
| { |
| // If the bundle is already active or its start level is not met, |
| // simply return. |
| // TODO: STARTLEVEL - Technically, this is not correct since we could be in the |
| // middle of a framework start level change and we might not have yet |
| // reached the target start level, but we will activate the bundle anyway. |
| // This means the bundle will be running in a higher start level temporarily |
| // until the start level thread catches up. |
| if ((bundle.getState() == Bundle.ACTIVE) || |
| (bundle.getStartLevel(getInitialBundleStartLevel()) > m_targetStartLevel)) |
| { |
| return; |
| } |
| |
| // Fire STARTING event to signify call to bundle activator. |
| fireBundleEvent(BundleEvent.STARTING, bundle); |
| |
| try |
| { |
| // Set the bundle's activator. |
| bundle.setActivator(createBundleActivator(bundle)); |
| |
| // Activate the bundle if it has an activator. |
| if (bundle.getActivator() != null) |
| { |
| m_secureAction.startActivator( |
| bundle.getActivator(), bundle._getBundleContext()); |
| } |
| |
| setBundleStateAndNotify(bundle, Bundle.ACTIVE); |
| |
| // We still need to fire the STARTED event, but we will do |
| // it later so we can release the bundle lock. |
| } |
| catch (Throwable th) |
| { |
| // Spec says we must fire STOPPING event. |
| fireBundleEvent(BundleEvent.STOPPING, bundle); |
| |
| // If there was an error starting the bundle, |
| // then reset its state to RESOLVED. |
| setBundleStateAndNotify(bundle, Bundle.RESOLVED); |
| |
| // Clean up the bundle activator |
| bundle.setActivator(null); |
| |
| // Unregister any services offered by this bundle. |
| m_registry.unregisterServices(bundle); |
| |
| // Release any services being used by this bundle. |
| m_registry.ungetServices(bundle); |
| |
| // Remove any listeners registered by this bundle. |
| m_dispatcher.removeListeners(bundle); |
| |
| // Clean up the bundle context. |
| ((BundleContextImpl) bundle._getBundleContext()).invalidate(); |
| bundle.setBundleContext(null); |
| |
| // The spec says to expect BundleException or |
| // SecurityException, so rethrow these exceptions. |
| if (th instanceof BundleException) |
| { |
| throw (BundleException) th; |
| } |
| else if ((System.getSecurityManager() != null) && |
| (th instanceof java.security.PrivilegedActionException)) |
| { |
| th = ((java.security.PrivilegedActionException) th).getException(); |
| } |
| |
| // Rethrow all other exceptions as a BundleException. |
| throw new BundleException("Activator start error in bundle " + bundle + ".", th); |
| } |
| } |
| finally |
| { |
| // Release bundle lock. |
| releaseBundleLock(bundle); |
| } |
| |
| // If there was no exception, then we should fire the STARTED |
| // event here without holding the lock if specified. |
| // TODO: LAZY - It would be nice to figure out how to do this without |
| // duplicating code; this method is called from two different |
| // places -- one fires the event itself the other one needs it. |
| if (fireEvent) |
| { |
| fireBundleEvent(BundleEvent.STARTED, bundle); |
| } |
| } |
| |
| void updateBundle(BundleImpl bundle, InputStream is) |
| throws BundleException |
| { |
| // Acquire bundle lock. |
| try |
| { |
| acquireBundleLock(bundle, Bundle.INSTALLED | Bundle.RESOLVED | Bundle.ACTIVE); |
| } |
| catch (IllegalStateException ex) |
| { |
| if (bundle.getState() == Bundle.UNINSTALLED) |
| { |
| throw new IllegalStateException("Cannot update an uninstalled bundle."); |
| } |
| else |
| { |
| throw new BundleException( |
| "Bundle " + bundle |
| + " cannot be update, since it is either starting or stopping."); |
| } |
| } |
| |
| // We must release the lock and close the input stream, so do both |
| // in a finally block. |
| try |
| { |
| // Variable to indicate whether bundle is active or not. |
| Throwable rethrow = null; |
| |
| final int oldState = bundle.getState(); |
| |
| // First get the update-URL from our header. |
| String updateLocation = (String) |
| bundle.getCurrentModule().getHeaders().get( |
| Constants.BUNDLE_UPDATELOCATION); |
| |
| // If no update location specified, use original location. |
| if (updateLocation == null) |
| { |
| updateLocation = bundle._getLocation(); |
| } |
| |
| // Stop the bundle if it is active, but do not change its |
| // persistent state. |
| if (oldState == Bundle.ACTIVE) |
| { |
| stopBundle(bundle, false); |
| } |
| |
| try |
| { |
| // Revising the bundle creates a new module, which modifies |
| // the global state, so we need to acquire the global lock |
| // before revising. |
| boolean locked = acquireGlobalLock(); |
| if (!locked) |
| { |
| throw new BundleException( |
| "Cannot acquire global lock to update the bundle."); |
| } |
| boolean wasExtension = bundle.isExtension(); |
| try |
| { |
| // TODO: REFACTOR - This adds the module to the resolver state, but should we do the |
| // security check first? |
| bundle.revise(updateLocation, is); |
| } |
| finally |
| { |
| // Always release the global lock. |
| releaseGlobalLock(); |
| } |
| |
| // Verify updated bundle. |
| try |
| { |
| Object sm = System.getSecurityManager(); |
| |
| if (sm != null) |
| { |
| ((SecurityManager) sm).checkPermission( |
| new AdminPermission(bundle, AdminPermission.LIFECYCLE)); |
| } |
| |
| // If this is an update from a normal to an extension bundle |
| // then attach the extension |
| if (!wasExtension && bundle.isExtension()) |
| { |
| m_extensionManager.addExtensionBundle(this, bundle); |
| // TODO: REFACTOR - Perhaps we could move this into extension manager. |
| m_resolverState.refreshSystemBundleModule(m_extensionManager.getModule()); |
| // TODO: REFACTOR - Not clear why this is here. We should look at all of these steps more closely. |
| setBundleStateAndNotify(bundle, Bundle.RESOLVED); |
| } |
| else if (wasExtension) |
| { |
| setBundleStateAndNotify(bundle, Bundle.INSTALLED); |
| } |
| } |
| catch (Throwable ex) |
| { |
| try |
| { |
| bundle.rollbackRevise(); |
| } |
| catch (Exception busted) |
| { |
| m_logger.log( |
| bundle, Logger.LOG_ERROR, "Unable to rollback.", busted); |
| } |
| |
| throw ex; |
| } |
| } |
| catch (Throwable ex) |
| { |
| m_logger.log( |
| bundle, Logger.LOG_ERROR, "Unable to update the bundle.", ex); |
| rethrow = ex; |
| } |
| |
| // Set new state, mark as needing a refresh, and fire updated event |
| // if successful. |
| if (rethrow == null) |
| { |
| bundle.setLastModified(System.currentTimeMillis()); |
| |
| if (!bundle.isExtension()) |
| { |
| setBundleStateAndNotify(bundle, Bundle.INSTALLED); |
| } |
| else |
| { |
| m_extensionManager.startExtensionBundle(this, bundle); |
| } |
| |
| fireBundleEvent(BundleEvent.UNRESOLVED, bundle); |
| |
| fireBundleEvent(BundleEvent.UPDATED, bundle); |
| |
| // Acquire global lock to check if we should auto-refresh. |
| boolean locked = acquireGlobalLock(); |
| // If we did not get the global lock, then do not try to |
| // auto-refresh. |
| if (locked) |
| { |
| try |
| { |
| if (!bundle.isUsed() && !bundle.isExtension()) |
| { |
| try |
| { |
| refreshPackages(new BundleImpl[] { bundle }); |
| } |
| catch (Exception ex) |
| { |
| m_logger.log(bundle, |
| Logger.LOG_ERROR, |
| "Unable to immediately purge the bundle revisions.", ex); |
| } |
| } |
| } |
| finally |
| { |
| // Always release the global lock. |
| releaseGlobalLock(); |
| } |
| } |
| } |
| |
| // If the old state was active, but the new module is a fragment, |
| // then mark the persistent state to inactive. |
| if ((oldState == Bundle.ACTIVE) && Util.isFragment(bundle.getCurrentModule())) |
| { |
| bundle.setPersistentStateInactive(); |
| m_logger.log(bundle, Logger.LOG_WARNING, |
| "Previously active bundle was updated to a fragment, resetting state to inactive: " |
| + bundle); |
| } |
| // Otherwise, restart the bundle if it was previously active, |
| // but do not change its persistent state. |
| else if (oldState == Bundle.ACTIVE) |
| { |
| startBundle(bundle, Bundle.START_TRANSIENT); |
| } |
| |
| // If update failed, rethrow exception. |
| if (rethrow != null) |
| { |
| if (rethrow instanceof AccessControlException) |
| { |
| throw (AccessControlException) rethrow; |
| } |
| else if (rethrow instanceof BundleException) |
| { |
| throw (BundleException) rethrow; |
| } |
| else |
| { |
| throw new BundleException( |
| "Update of bundle " + bundle + " failed.", rethrow); |
| } |
| } |
| } |
| finally |
| { |
| // Close the input stream. |
| try |
| { |
| if (is != null) is.close(); |
| } |
| catch (Exception ex) |
| { |
| m_logger.log(bundle, Logger.LOG_ERROR, "Unable to close input stream.", ex); |
| } |
| |
| // Release bundle lock. |
| releaseBundleLock(bundle); |
| } |
| } |
| |
| void stopBundle(BundleImpl bundle, boolean record) |
| throws BundleException |
| { |
| // Acquire bundle lock. |
| try |
| { |
| acquireBundleLock(bundle, |
| Bundle.INSTALLED | Bundle.RESOLVED | Bundle.STARTING | Bundle.ACTIVE); |
| } |
| catch (IllegalStateException ex) |
| { |
| if (bundle.getState() == Bundle.UNINSTALLED) |
| { |
| throw new IllegalStateException("Cannot stop an uninstalled bundle."); |
| } |
| else |
| { |
| throw new BundleException( |
| "Bundle " + bundle |
| + " cannot be stopped since it is already stopping."); |
| } |
| } |
| |
| try |
| { |
| Throwable rethrow = null; |
| |
| // Set the bundle's persistent state to inactive if necessary. |
| if (record) |
| { |
| bundle.setPersistentStateInactive(); |
| } |
| |
| // If the bundle is not persistently started, then we |
| // need to reset the activation policy flag, since it |
| // does not persist across persistent stops or transient |
| // stops. |
| if (!isBundlePersistentlyStarted(bundle)) |
| { |
| bundle.setDeclaredActivationPolicyUsed(false); |
| } |
| |
| // As per the OSGi spec, fragment bundles can not be stopped and must |
| // throw a BundleException when there is an attempt to stop one. |
| if (Util.isFragment(bundle.getCurrentModule())) |
| { |
| throw new BundleException("Fragment bundles can not be stopped: " + bundle); |
| } |
| |
| boolean wasActive = false; |
| switch (bundle.getState()) |
| { |
| case Bundle.UNINSTALLED: |
| throw new IllegalStateException("Cannot stop an uninstalled bundle."); |
| case Bundle.STARTING: |
| if (bundle.isDeclaredActivationPolicyUsed() |
| && bundle.getCurrentModule().getDeclaredActivationPolicy() != Module.LAZY_ACTIVATION) |
| { |
| throw new BundleException( |
| "Stopping a starting or stopping bundle is currently not supported."); |
| } |
| break; |
| case Bundle.STOPPING: |
| throw new BundleException( |
| "Stopping a starting or stopping bundle is currently not supported."); |
| case Bundle.INSTALLED: |
| case Bundle.RESOLVED: |
| return; |
| case Bundle.ACTIVE: |
| wasActive = true; |
| break; |
| } |
| |
| // At this point, no matter if the bundle's activation policy is |
| // eager or deferred, we need to set the bundle's state to STOPPING |
| // and fire the STOPPING event. |
| setBundleStateAndNotify(bundle, Bundle.STOPPING); |
| fireBundleEvent(BundleEvent.STOPPING, bundle); |
| |
| // If the bundle was active, then invoke the activator stop() method |
| // or if we are stopping the system bundle. |
| if ((wasActive) || (bundle.getBundleId() == 0)) |
| { |
| try |
| { |
| if (bundle.getActivator() != null) |
| { |
| m_secureAction.stopActivator(bundle.getActivator(), bundle._getBundleContext()); |
| } |
| } |
| catch (Throwable th) |
| { |
| m_logger.log(bundle, Logger.LOG_ERROR, "Error stopping bundle.", th); |
| rethrow = th; |
| } |
| } |
| |
| // Do not clean up after the system bundle since it will |
| // clean up after itself. |
| if (bundle.getBundleId() != 0) |
| { |
| // Clean up the bundle activator. |
| bundle.setActivator(null); |
| |
| // Unregister any services offered by this bundle. |
| m_registry.unregisterServices(bundle); |
| |
| // Release any services being used by this bundle. |
| m_registry.ungetServices(bundle); |
| |
| // The spec says that we must remove all event |
| // listeners for a bundle when it is stopped. |
| m_dispatcher.removeListeners(bundle); |
| |
| // Clean up the bundle context. |
| ((BundleContextImpl) bundle._getBundleContext()).invalidate(); |
| bundle.setBundleContext(null); |
| |
| setBundleStateAndNotify(bundle, Bundle.RESOLVED); |
| |
| // We still need to fire the STOPPED event, but we will do |
| // it later so we can release the bundle lock. |
| } |
| |
| // Throw activator error if there was one. |
| if (rethrow != null) |
| { |
| // The spec says to expect BundleException or |
| // SecurityException, so rethrow these exceptions. |
| if (rethrow instanceof BundleException) |
| { |
| throw (BundleException) rethrow; |
| } |
| else if ((System.getSecurityManager() != null) && |
| (rethrow instanceof java.security.PrivilegedActionException)) |
| { |
| rethrow = ((java.security.PrivilegedActionException) rethrow).getException(); |
| } |
| |
| // Rethrow all other exceptions as a BundleException. |
| throw new BundleException( |
| "Activator stop error in bundle " + bundle + ".", rethrow); |
| } |
| } |
| finally |
| { |
| // Always release bundle lock. |
| releaseBundleLock(bundle); |
| } |
| |
| // If there was no exception, then we should fire the STOPPED event |
| // here without holding the lock. |
| fireBundleEvent(BundleEvent.STOPPED, bundle); |
| } |
| |
| void uninstallBundle(BundleImpl bundle) throws BundleException |
| { |
| // Acquire bundle lock. |
| try |
| { |
| acquireBundleLock(bundle, |
| Bundle.INSTALLED | Bundle.RESOLVED | Bundle.STARTING | Bundle.ACTIVE); |
| } |
| catch (IllegalStateException ex) |
| { |
| if (bundle.getState() == Bundle.UNINSTALLED) |
| { |
| throw new IllegalStateException("Cannot uninstall an uninstalled bundle."); |
| } |
| else |
| { |
| throw new BundleException( |
| "Bundle " + bundle |
| + " cannot be uninstalled since it is stopping."); |
| } |
| } |
| |
| try |
| { |
| // The spec says that uninstall should always succeed, so |
| // catch an exception here if stop() doesn't succeed and |
| // rethrow it at the end. |
| if (!bundle.isExtension() && (bundle.getState() == Bundle.ACTIVE)) |
| { |
| try |
| { |
| stopBundle(bundle, true); |
| } |
| catch (BundleException ex) |
| { |
| fireFrameworkEvent(FrameworkEvent.ERROR, bundle, ex); |
| } |
| } |
| |
| // Remove the bundle from the installed map. |
| BundleImpl target = null; |
| // Acquire global lock. |
| boolean locked = acquireGlobalLock(); |
| if (!locked) |
| { |
| // If the calling thread holds bundle locks, then we might not |
| // be able to get the global lock. |
| throw new IllegalStateException( |
| "Unable to acquire global lock to remove bundle."); |
| } |
| try |
| { |
| // Use a copy-on-write approach to remove the bundle |
| // from the installed maps. |
| Map[] maps = new Map[] { |
| new HashMap<String, BundleImpl>(m_installedBundles[LOCATION_MAP_IDX]), |
| new TreeMap<Long, BundleImpl>(m_installedBundles[IDENTIFIER_MAP_IDX]) |
| }; |
| target = (BundleImpl) maps[LOCATION_MAP_IDX].remove(bundle._getLocation()); |
| maps[IDENTIFIER_MAP_IDX].remove(new Long(target.getBundleId())); |
| m_installedBundles = maps; |
| |
| // Put the uninstalled bundle into the uninstalled |
| // list for subsequent refreshing. |
| if (target != null) |
| { |
| // Set the bundle's persistent state to uninstalled. |
| bundle.setPersistentStateUninstalled(); |
| |
| // Put bundle in uninstalled bundle array. |
| rememberUninstalledBundle(bundle); |
| } |
| } |
| finally |
| { |
| releaseGlobalLock(); |
| } |
| |
| if (target == null) |
| { |
| m_logger.log(bundle, |
| Logger.LOG_ERROR, "Unable to remove bundle from installed map!"); |
| } |
| |
| setBundleStateAndNotify(bundle, Bundle.INSTALLED); |
| |
| // Unfortunately, fire UNRESOLVED event while holding the lock, |
| // since we still need to change the bundle state. |
| fireBundleEvent(BundleEvent.UNRESOLVED, bundle); |
| |
| // Set state to uninstalled. |
| setBundleStateAndNotify(bundle, Bundle.UNINSTALLED); |
| bundle.setLastModified(System.currentTimeMillis()); |
| |
| // If this bundle is a fragment, unmerge it from any |
| // unresolved hosts. |
| bundle.cleanAfterUninstall(); |
| } |
| finally |
| { |
| // Always release bundle lock. |
| releaseBundleLock(bundle); |
| } |
| |
| // Fire UNINSTALLED event without holding the lock. |
| fireBundleEvent(BundleEvent.UNINSTALLED, bundle); |
| |
| // Acquire global lock to check if we should auto-refresh. |
| boolean locked = acquireGlobalLock(); |
| if (locked) |
| { |
| try |
| { |
| // If the bundle is not used by anyone, then garbage |
| // collect it now. |
| if (!bundle.isUsed()) |
| { |
| try |
| { |
| refreshPackages(new BundleImpl[] { bundle }); |
| } |
| catch (Exception ex) |
| { |
| m_logger.log(bundle, |
| Logger.LOG_ERROR, |
| "Unable to immediately garbage collect the bundle.", ex); |
| } |
| } |
| } |
| finally |
| { |
| // Always release the global lock. |
| releaseGlobalLock(); |
| } |
| } |
| } |
| |
| // |
| // Implementation of BundleContext interface methods. |
| // |
| |
| /** |
| * Implementation for BundleContext.getProperty(). Returns |
| * environment property associated with the framework. |
| * |
| * @param key The name of the property to retrieve. |
| * @return The value of the specified property or null. |
| **/ |
| String getProperty(String key) |
| { |
| // First, check the config properties. |
| String val = (String) m_configMap.get(key); |
| // If not found, then try the system properties. |
| return (val == null) ? System.getProperty(key) : val; |
| } |
| |
| Bundle installBundle(String location, InputStream is) |
| throws BundleException |
| { |
| return installBundle(-1, location, null, is); |
| } |
| |
| private Bundle installBundle(long id, String location, BundleArchive ba, InputStream is) |
| throws BundleException |
| { |
| BundleImpl bundle = null; |
| |
| // Acquire an install lock. |
| acquireInstallLock(location); |
| |
| try |
| { |
| // Check to see if the framework is still running; |
| if ((getState() == Bundle.STOPPING) || |
| (getState() == Bundle.UNINSTALLED)) |
| { |
| throw new BundleException("The framework has been shutdown."); |
| } |
| |
| // If bundle location is already installed, then |
| // return it as required by the OSGi specification. |
| bundle = (BundleImpl) getBundle(location); |
| if (bundle != null) |
| { |
| return bundle; |
| } |
| |
| // Determine if this is a new or existing bundle. |
| boolean isNew = (ba == null); |
| |
| // If the bundle is new we must cache its JAR file. |
| if (isNew) |
| { |
| // First generate an identifier for it. |
| id = getNextId(); |
| |
| try |
| { |
| // Add the bundle to the cache. |
| ba = m_cache.create(id, location, getInitialBundleStartLevel(), is); |
| } |
| catch (Exception ex) |
| { |
| throw new BundleException( |
| "Unable to cache bundle: " + location, ex); |
| } |
| finally |
| { |
| try |
| { |
| if (is != null) is.close(); |
| } |
| catch (IOException ex) |
| { |
| m_logger.log( |
| Logger.LOG_ERROR, |
| "Unable to close input stream.", ex); |
| } |
| } |
| } |
| else |
| { |
| // If the bundle we are installing is not new, |
| // then try to purge old revisions before installing |
| // it; this is done just in case a "refresh" |
| // didn't occur last session...this would only be |
| // due to an error or system crash. |
| try |
| { |
| if (ba.getRevisionCount() > 1) |
| { |
| ba.purge(); |
| } |
| } |
| catch (Exception ex) |
| { |
| m_logger.log( |
| Logger.LOG_ERROR, |
| "Could not purge bundle.", ex); |
| } |
| } |
| |
| try |
| { |
| // Acquire the global lock to create the bundle, |
| // since this impacts the global state. |
| boolean locked = acquireGlobalLock(); |
| if (!locked) |
| { |
| throw new BundleException( |
| "Unable to acquire the global lock to install the bundle."); |
| } |
| try |
| { |
| bundle = new BundleImpl(this, ba); |
| } |
| finally |
| { |
| // Always release the global lock. |
| releaseGlobalLock(); |
| } |
| |
| if (!bundle.isExtension()) |
| { |
| Object sm = System.getSecurityManager(); |
| if (sm != null) |
| { |
| ((SecurityManager) sm).checkPermission( |
| new AdminPermission(bundle, AdminPermission.LIFECYCLE)); |
| } |
| } |
| else |
| { |
| m_extensionManager.addExtensionBundle(this, bundle); |
| m_resolverState.refreshSystemBundleModule(m_extensionManager.getModule()); |
| } |
| } |
| catch (Throwable ex) |
| { |
| // If the bundle is new, then remove it from the cache. |
| // TODO: FRAMEWORK - Perhaps it should be removed if it is not new too. |
| if (isNew) |
| { |
| try |
| { |
| if (bundle != null) |
| { |
| bundle.closeAndDelete(); |
| } |
| else if (ba != null) |
| { |
| ba.closeAndDelete(); |
| } |
| } |
| catch (Exception ex1) |
| { |
| m_logger.log(bundle, |
| Logger.LOG_ERROR, |
| "Could not remove from cache.", ex1); |
| } |
| } |
| if (ex instanceof BundleException) |
| { |
| throw (BundleException) ex; |
| } |
| else if (ex instanceof AccessControlException) |
| { |
| throw (AccessControlException) ex; |
| } |
| else |
| { |
| throw new BundleException("Could not create bundle object.", ex); |
| } |
| } |
| |
| // Acquire global lock. |
| boolean locked = acquireGlobalLock(); |
| if (!locked) |
| { |
| // If the calling thread holds bundle locks, then we might not |
| // be able to get the global lock. |
| throw new IllegalStateException( |
| "Unable to acquire global lock to add bundle."); |
| } |
| try |
| { |
| // Use a copy-on-write approach to add the bundle |
| // to the installed maps. |
| Map[] maps = new Map[] { |
| new HashMap<String, BundleImpl>(m_installedBundles[LOCATION_MAP_IDX]), |
| new TreeMap<Long, BundleImpl>(m_installedBundles[IDENTIFIER_MAP_IDX]) |
| }; |
| maps[LOCATION_MAP_IDX].put(location, bundle); |
| maps[IDENTIFIER_MAP_IDX].put(new Long(bundle.getBundleId()), bundle); |
| m_installedBundles = maps; |
| } |
| finally |
| { |
| releaseGlobalLock(); |
| } |
| |
| if (bundle.isExtension()) |
| { |
| m_extensionManager.startExtensionBundle(this, bundle); |
| } |
| } |
| finally |
| { |
| // Always release install lock. |
| releaseInstallLock(location); |
| |
| // Always try to close the input stream. |
| try |
| { |
| if (is != null) is.close(); |
| } |
| catch (IOException ex) |
| { |
| m_logger.log(bundle, |
| Logger.LOG_ERROR, |
| "Unable to close input stream.", ex); |
| // Not much else we can do. |
| } |
| } |
| |
| // Fire bundle event. |
| fireBundleEvent(BundleEvent.INSTALLED, bundle); |
| |
| // Return new bundle. |
| return bundle; |
| } |
| |
| /** |
| * Retrieves a bundle from its location. |
| * |
| * @param location The location of the bundle to retrieve. |
| * @return The bundle associated with the location or null if there |
| * is no bundle associated with the location. |
| **/ |
| Bundle getBundle(String location) |
| { |
| return (Bundle) m_installedBundles[LOCATION_MAP_IDX].get(location); |
| } |
| |
| /** |
| * Implementation for BundleContext.getBundle(). Retrieves a |
| * bundle from its identifier. |
| * |
| * @param id The identifier of the bundle to retrieve. |
| * @return The bundle associated with the identifier or null if there |
| * is no bundle associated with the identifier. |
| **/ |
| Bundle getBundle(long id) |
| { |
| BundleImpl bundle = (BundleImpl) |
| m_installedBundles[IDENTIFIER_MAP_IDX].get(new Long(id)); |
| if (bundle != null) |
| { |
| return bundle; |
| } |
| |
| List<BundleImpl> uninstalledBundles = m_uninstalledBundles; |
| for (int i = 0; |
| (uninstalledBundles != null) && (i < uninstalledBundles.size()); |
| i++) |
| { |
| if (uninstalledBundles.get(i).getBundleId() == id) |
| { |
| return uninstalledBundles.get(i); |
| } |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Implementation for BundleContext.getBundles(). Retrieves |
| * all installed bundles. |
| * |
| * @return An array containing all installed bundles or null if |
| * there are no installed bundles. |
| **/ |
| Bundle[] getBundles() |
| { |
| Map bundles = m_installedBundles[IDENTIFIER_MAP_IDX]; |
| if (bundles.isEmpty()) |
| { |
| return null; |
| } |
| return (Bundle[]) bundles.values().toArray(new Bundle[bundles.size()]); |
| } |
| |
| void addBundleListener(Bundle bundle, BundleListener l) |
| { |
| m_dispatcher.addListener(bundle, BundleListener.class, l, null); |
| } |
| |
| void removeBundleListener(Bundle bundle, BundleListener l) |
| { |
| m_dispatcher.removeListener(bundle, BundleListener.class, l); |
| } |
| |
| /** |
| * Implementation for BundleContext.addServiceListener(). |
| * Adds service listener to the listener list so that is |
| * can listen for <code>ServiceEvent</code>s. |
| * |
| * @param bundle The bundle that registered the listener. |
| * @param l The service listener to add to the listener list. |
| * @param f The filter for the listener; may be null. |
| **/ |
| void addServiceListener(Bundle bundle, ServiceListener l, String f) |
| throws InvalidSyntaxException |
| { |
| Filter oldFilter = m_dispatcher.addListener( |
| bundle, ServiceListener.class, l, (f == null) ? null : FrameworkUtil.createFilter(f)); |
| |
| List listenerHooks = m_registry.getListenerHooks(); |
| if (oldFilter != null) |
| { |
| final Collection removed = Collections.singleton( |
| new ListenerHookInfoImpl(((BundleImpl) bundle)._getBundleContext(), l, oldFilter.toString(), true)); |
| InvokeHookCallback removedCallback = new ListenerHookRemovedCallback(removed); |
| for (int i = 0; i < listenerHooks.size(); i++) |
| { |
| m_registry.invokeHook((ServiceReference) listenerHooks.get(i), this, removedCallback); |
| } |
| } |
| |
| // Invoke the ListenerHook.added() on all hooks. |
| final Collection added = Collections.singleton( |
| new ListenerHookInfoImpl(((BundleImpl) bundle)._getBundleContext(), l, f, false)); |
| InvokeHookCallback addedCallback = new InvokeHookCallback() |
| { |
| public void invokeHook(Object hook) |
| { |
| ((ListenerHook) hook).added(added); |
| } |
| }; |
| for (int i = 0; i < listenerHooks.size(); i++) |
| { |
| m_registry.invokeHook((ServiceReference) listenerHooks.get(i), this, addedCallback); |
| } |
| } |
| |
| /** |
| * Implementation for BundleContext.removeServiceListener(). |
| * Removes service listeners from the listener list. |
| * |
| * @param bundle The context bundle of the listener |
| * @param l The service listener to remove from the listener list. |
| **/ |
| void removeServiceListener(Bundle bundle, ServiceListener l) |
| { |
| ListenerHook.ListenerInfo listener = |
| m_dispatcher.removeListener(bundle, ServiceListener.class, l); |
| |
| if (listener != null) |
| { |
| // Invoke the ListenerHook.removed() on all hooks. |
| List listenerHooks = m_registry.getListenerHooks(); |
| Collection c = Collections.singleton(listener); |
| InvokeHookCallback callback = new ListenerHookRemovedCallback(c); |
| for (int i = 0; i < listenerHooks.size(); i++) |
| { |
| m_registry.invokeHook((ServiceReference) listenerHooks.get(i), this, callback); |
| } |
| } |
| } |
| |
| void addFrameworkListener(Bundle bundle, FrameworkListener l) |
| { |
| m_dispatcher.addListener(bundle, FrameworkListener.class, l, null); |
| } |
| |
| void removeFrameworkListener(Bundle bundle, FrameworkListener l) |
| { |
| m_dispatcher.removeListener(bundle, FrameworkListener.class, l); |
| } |
| |
| /** |
| * Implementation for BundleContext.registerService(). Registers |
| * a service for the specified bundle bundle. |
| * |
| * @param classNames A string array containing the names of the classes |
| * under which the new service is available. |
| * @param svcObj The service object or <code>ServiceFactory</code>. |
| * @param dict A dictionary of properties that further describe the |
| * service or null. |
| * @return A <code>ServiceRegistration</code> object or null. |
| **/ |
| ServiceRegistration registerService( |
| BundleImpl bundle, String[] classNames, Object svcObj, Dictionary dict) |
| { |
| if (classNames == null) |
| { |
| throw new NullPointerException("Service class names cannot be null."); |
| } |
| else if (svcObj == null) |
| { |
| throw new IllegalArgumentException("Service object cannot be null."); |
| } |
| |
| // Acquire bundle lock. |
| try |
| { |
| acquireBundleLock(bundle, Bundle.STARTING | Bundle.ACTIVE); |
| } |
| catch (IllegalStateException ex) |
| { |
| throw new IllegalStateException( |
| "Can only register services while bundle is active or activating."); |
| } |
| |
| ServiceRegistration reg = null; |
| |
| try |
| { |
| // Check to make sure that the service object is |
| // an instance of all service classes; ignore if |
| // service object is a service factory. |
| if (!(svcObj instanceof ServiceFactory)) |
| { |
| for (int i = 0; i < classNames.length; i++) |
| { |
| Class clazz = Util.loadClassUsingClass(svcObj.getClass(), classNames[i], m_secureAction); |
| if (clazz == null) |
| { |
| throw new IllegalArgumentException( |
| "Cannot cast service: " + classNames[i]); |
| } |
| else if (!clazz.isAssignableFrom(svcObj.getClass())) |
| { |
| throw new IllegalArgumentException( |
| "Service object is not an instance of \"" |
| + classNames[i] + "\"."); |
| } |
| } |
| } |
| |
| reg = m_registry.registerService(bundle, classNames, svcObj, dict); |
| } |
| finally |
| { |
| // Always release bundle lock. |
| releaseBundleLock(bundle); |
| } |
| |
| // Check to see if this a listener hook; if so, then we need |
| // to invoke the callback with all existing service listeners. |
| if (ServiceRegistry.isHook(classNames, ListenerHook.class, svcObj)) |
| { |
| m_registry.invokeHook(reg.getReference(), this, new InvokeHookCallback() |
| { |
| public void invokeHook(Object hook) |
| { |
| ((ListenerHook) hook). |
| added(m_dispatcher.wrapAllServiceListeners(false)); |
| } |
| }); |
| } |
| |
| // TODO: CONCURRENCY - Reconsider firing event here, outside of the |
| // bundle lock. |
| |
| // NOTE: The service registered event is fired from the service |
| // registry to the framework, where it is then redistributed to |
| // interested service event listeners. |
| |
| return reg; |
| } |
| |
| /** |
| * Retrieves an array of {@link ServiceReference} objects based on calling bundle, |
| * service class name, and filter expression. Optionally checks for isAssignable to |
| * make sure that the service can be cast to the |
| * @param bundle Calling Bundle |
| * @param className Service Classname or <code>null</code> for all |
| * @param expr Filter Criteria or <code>null</code> |
| * @return Array of ServiceReference objects that meet the criteria |
| * @throws InvalidSyntaxException |
| */ |
| ServiceReference[] getServiceReferences( |
| final BundleImpl bundle, final String className, |
| final String expr, final boolean checkAssignable) |
| throws InvalidSyntaxException |
| { |
| // Define filter if expression is not null. |
| SimpleFilter filter = null; |
| if (expr != null) |
| { |
| try |
| { |
| filter = SimpleFilter.parse(expr); |
| } |
| catch (Exception ex) |
| { |
| throw new InvalidSyntaxException(ex.getMessage(), expr); |
| } |
| } |
| |
| // Ask the service registry for all matching service references. |
| final List refList = m_registry.getServiceReferences(className, filter); |
| |
| // Filter on assignable references |
| if (checkAssignable) |
| { |
| for (int refIdx = 0; (refList != null) && (refIdx < refList.size()); refIdx++) |
| { |
| // Get the current service reference. |
| ServiceReference ref = (ServiceReference) refList.get(refIdx); |
| |
| // Now check for castability. |
| if (!Util.isServiceAssignable(bundle, ref)) |
| { |
| refList.remove(refIdx); |
| refIdx--; |
| } |
| } |
| } |
| |
| // activate findhooks |
| List findHooks = m_registry.getFindHooks(); |
| InvokeHookCallback callback = new InvokeHookCallback() |
| { |
| public void invokeHook(Object hook) |
| { |
| ((FindHook) hook).find(bundle._getBundleContext(), |
| className, |
| expr, |
| !checkAssignable, |
| new ShrinkableCollection(refList)); |
| } |
| }; |
| for (int i = 0; i < findHooks.size(); i++) |
| { |
| m_registry.invokeHook((ServiceReference) findHooks.get(i), this, callback); |
| } |
| |
| if (refList.size() > 0) |
| { |
| return (ServiceReference[]) refList.toArray(new ServiceReference[refList.size()]); |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Retrieves Array of {@link ServiceReference} objects based on calling bundle, service class name, |
| * optional filter expression, and optionally filters further on the version. |
| * If running under a {@link SecurityManager}, checks that the calling bundle has permissions to |
| * see the service references and removes references that aren't. |
| * @param bundle Calling Bundle |
| * @param className Service Classname or <code>null</code> for all |
| * @param expr Filter Criteria or <code>null</code> |
| * @param checkAssignable <code>true</code> to check for isAssignable, <code>false</code> to return all versions |
| * @return Array of ServiceReference objects that meet the criteria |
| * @throws InvalidSyntaxException |
| */ |
| ServiceReference[] getAllowedServiceReferences( |
| BundleImpl bundle, String className, String expr, boolean checkAssignable) |
| throws InvalidSyntaxException |
| { |
| ServiceReference[] refs = getServiceReferences(bundle, className, expr, checkAssignable); |
| |
| Object sm = System.getSecurityManager(); |
| |
| if ((sm == null) || (refs == null)) |
| { |
| return refs; |
| } |
| |
| List result = new ArrayList(); |
| |
| for (int i = 0; i < refs.length; i++) |
| { |
| try |
| { |
| ((SecurityManager) sm).checkPermission(new ServicePermission(refs[i], ServicePermission.GET)); |
| result.add(refs[i]); |
| } |
| catch (Exception ex) |
| { |
| // Ignore, since we are just testing permission. |
| } |
| } |
| |
| if (result.isEmpty()) |
| { |
| return null; |
| } |
| |
| return (ServiceReference[]) result.toArray(new ServiceReference[result.size()]); |
| |
| } |
| |
| Object getService(Bundle bundle, ServiceReference ref) |
| { |
| try |
| { |
| return m_registry.getService(bundle, ref); |
| } |
| catch (ServiceException ex) |
| { |
| fireFrameworkEvent(FrameworkEvent.ERROR, ref.getBundle(), ex); |
| } |
| |
| return null; |
| } |
| |
| boolean ungetService(Bundle bundle, ServiceReference ref) |
| { |
| return m_registry.ungetService(bundle, ref); |
| } |
| |
| File getDataFile(BundleImpl bundle, String s) |
| { |
| try |
| { |
| if (bundle == this) |
| { |
| return m_cache.getSystemBundleDataFile(s); |
| } |
| |
| return bundle.getArchive().getDataFile(s); |
| } |
| catch (Exception ex) |
| { |
| m_logger.log(bundle, Logger.LOG_ERROR, ex.getMessage()); |
| return null; |
| } |
| } |
| |
| // |
| // PackageAdmin related methods. |
| // |
| |
| /** |
| * This method returns the bundle associated with the specified class if |
| * the class was loaded from a bundle from this framework instance. If the |
| * class was not loaded from a bundle or was loaded by a bundle in another |
| * framework instance, then <tt>null</tt> is returned. |
| * |
| * @param clazz the class for which to find its associated bundle. |
| * @return the bundle associated with the specified class or <tt>null</tt> |
| * if the class was not loaded by a bundle or its associated |
| * bundle belongs to a different framework instance. |
| **/ |
| Bundle getBundle(Class clazz) |
| { |
| if (clazz.getClassLoader() instanceof BundleReference) |
| { |
| // Only return the bundle if it is from this framework. |
| BundleReference br = (BundleReference) clazz.getClassLoader(); |
| return ((br.getBundle() instanceof BundleImpl) |
| && (((BundleImpl) br.getBundle()).getFramework() == this)) |
| ? br.getBundle() : null; |
| } |
| try |
| { |
| // For implicit boot delegation, we don't want those classes |
| // to be shown as coming from the system bundle. |
| if (!clazz.getName().startsWith("java.")) |
| { |
| return (m_extensionManager.getModule().getClassByDelegation(clazz.getName()) == clazz) |
| ? this : null; |
| } |
| } |
| catch(ClassNotFoundException ex) |
| { |
| // Ignore and return null. |
| } |
| return null; |
| } |
| |
| /** |
| * Returns the exported packages associated with the specified |
| * package name. This is used by the PackageAdmin service |
| * implementation. |
| * |
| * @param pkgName The name of the exported package to find. |
| * @return The exported package or null if no matching package was found. |
| **/ |
| ExportedPackage[] getExportedPackages(String pkgName) |
| { |
| // First, get all exporters of the package. |
| List<Directive> dirs = new ArrayList<Directive>(0); |
| List<Attribute> attrs = new ArrayList<Attribute>(1); |
| attrs.add(new Attribute(Capability.PACKAGE_ATTR, pkgName, false)); |
| Requirement req = new RequirementImpl(null, Capability.PACKAGE_NAMESPACE, dirs, attrs); |
| Set<Capability> exports = m_resolverState.getCandidates(null, req, false); |
| |
| // We only want resolved capabilities. |
| for (Iterator<Capability> it = exports.iterator(); it.hasNext(); ) |
| { |
| if (!it.next().getModule().isResolved()) |
| { |
| it.remove(); |
| } |
| } |
| |
| if (exports != null) |
| { |
| List pkgs = new ArrayList(); |
| |
| for (Iterator<Capability> it = exports.iterator(); it.hasNext(); ) |
| { |
| // Get the bundle associated with the current exporting module. |
| BundleImpl bundle = (BundleImpl) it.next().getModule().getBundle(); |
| |
| // We need to find the version of the exported package, but this |
| // is tricky since there may be multiple versions of the package |
| // offered by a given bundle, since multiple revisions of the |
| // bundle JAR file may exist if the bundle was updated without |
| // refreshing the framework. In this case, each revision of the |
| // bundle JAR file is represented as a module in the BundleInfo |
| // module array, which is ordered from oldest to newest. We assume |
| // that the first module found to be exporting the package is the |
| // provider of the package, which makes sense since it must have |
| // been resolved first. |
| List<Module> modules = bundle.getModules(); |
| for (int modIdx = 0; modIdx < modules.size(); modIdx++) |
| { |
| List<Capability> ec = modules.get(modIdx).getCapabilities(); |
| for (int i = 0; (ec != null) && (i < ec.size()); i++) |
| { |
| if (ec.get(i).getNamespace().equals(req.getNamespace()) |
| && CapabilitySet.matches(ec.get(i), req.getFilter())) |
| { |
| pkgs.add( |
| new ExportedPackageImpl( |
| this, bundle, modules.get(modIdx), ec.get(i))); |
| } |
| } |
| } |
| } |
| |
| return (pkgs.isEmpty()) ? null : (ExportedPackage[]) pkgs.toArray(new ExportedPackage[pkgs.size()]); |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Returns an array of all actively exported packages from the specified |
| * bundle or if the specified bundle is <tt>null</tt> an array |
| * containing all actively exported packages by all bundles. |
| * |
| * @param b The bundle whose exported packages are to be retrieved |
| * or <tt>null</tt> if the exported packages of all bundles are |
| * to be retrieved. |
| * @return An array of exported packages. |
| **/ |
| ExportedPackage[] getExportedPackages(Bundle b) |
| { |
| List list = new ArrayList(); |
| |
| // If a bundle is specified, then return its |
| // exported packages. |
| if (b != null) |
| { |
| BundleImpl bundle = (BundleImpl) b; |
| getExportedPackages(bundle, list); |
| } |
| // Otherwise return all exported packages. |
| else |
| { |
| // To create a list of all exported packages, we must look |
| // in the installed and uninstalled sets of bundles. |
| boolean locked = acquireGlobalLock(); |
| if (!locked) |
| { |
| // If the calling thread holds bundle locks, then we might not |
| // be able to get the global lock. |
| throw new IllegalStateException( |
| "Unable to acquire global lock to retrieve exported packages."); |
| } |
| try |
| { |
| // First get exported packages from uninstalled bundles. |
| for (int bundleIdx = 0; |
| (m_uninstalledBundles != null) && (bundleIdx < m_uninstalledBundles.size()); |
| bundleIdx++) |
| { |
| BundleImpl bundle = m_uninstalledBundles.get(bundleIdx); |
| getExportedPackages(bundle, list); |
| } |
| |
| // Now get exported packages from installed bundles. |
| Bundle[] bundles = getBundles(); |
| for (int bundleIdx = 0; bundleIdx < bundles.length; bundleIdx++) |
| { |
| BundleImpl bundle = (BundleImpl) bundles[bundleIdx]; |
| getExportedPackages(bundle, list); |
| } |
| } |
| finally |
| { |
| releaseGlobalLock(); |
| } |
| } |
| |
| return (list.isEmpty()) |
| ? null |
| : (ExportedPackage[]) list.toArray(new ExportedPackage[list.size()]); |
| } |
| |
| /** |
| * Adds any current active exported packages from the specified bundle |
| * to the passed in list. |
| * @param bundle The bundle from which to retrieve exported packages. |
| * @param list The list to which the exported packages are added |
| **/ |
| private void getExportedPackages(BundleImpl bundle, List list) |
| { |
| // Since a bundle may have many modules associated with it, |
| // one for each revision in the cache, search each module |
| // for each revision to get all exports. |
| List<Module> modules = bundle.getModules(); |
| for (int modIdx = 0; modIdx < modules.size(); modIdx++) |
| { |
| List<Capability> caps = modules.get(modIdx).getCapabilities(); |
| if ((caps != null) && (caps.size() > 0)) |
| { |
| for (int capIdx = 0; capIdx < caps.size(); capIdx++) |
| { |
| // See if the target bundle's module is one of the |
| // resolved exporters of the package. |
| if (caps.get(capIdx).getNamespace().equals(Capability.PACKAGE_NAMESPACE)) |
| { |
| String pkgName = (String) |
| caps.get(capIdx).getAttribute(Capability.PACKAGE_ATTR).getValue(); |
| List<Directive> dirs = new ArrayList<Directive>(0); |
| List<Attribute> attrs = new ArrayList<Attribute>(1); |
| attrs.add(new Attribute(Capability.PACKAGE_ATTR, pkgName, false)); |
| Requirement req = |
| new RequirementImpl(null, Capability.PACKAGE_NAMESPACE, dirs, attrs); |
| Set<Capability> exports = m_resolverState.getCandidates(null, req, false); |
| // We only want resolved capabilities. |
| for (Iterator<Capability> it = exports.iterator(); it.hasNext(); ) |
| { |
| if (!it.next().getModule().isResolved()) |
| { |
| it.remove(); |
| } |
| } |
| |
| |
| // Search through the current providers to find the target module. |
| for (Capability cap : exports) |
| { |
| if (cap == caps.get(capIdx)) |
| { |
| list.add(new ExportedPackageImpl( |
| this, bundle, modules.get(modIdx), caps.get(capIdx))); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| List<Bundle> getDependentBundles(BundleImpl exporter) |
| { |
| // Create list for storing importing bundles. |
| List<Bundle> list = new ArrayList(); |
| |
| // Get all dependent modules from all exporter module revisions. |
| List<Module> modules = exporter.getModules(); |
| for (int modIdx = 0; modIdx < modules.size(); modIdx++) |
| { |
| List<Module> dependents = ((ModuleImpl) modules.get(modIdx)).getDependents(); |
| for (int depIdx = 0; |
| (dependents != null) && (depIdx < dependents.size()); |
| depIdx++) |
| { |
| list.add(dependents.get(depIdx).getBundle()); |
| } |
| } |
| |
| return list; |
| } |
| |
| List<Bundle> getImportingBundles(ExportedPackage ep) |
| { |
| // Create list for storing importing bundles. |
| List<Bundle> list = new ArrayList(); |
| |
| // Get exporting bundle information. |
| BundleImpl exporter = (BundleImpl) ep.getExportingBundle(); |
| |
| // Get all importers and requirers for all revisions of the bundle. |
| // The spec says that require-bundle should be returned with importers. |
| List<Module> expModules = exporter.getModules(); |
| for (int expIdx = 0; (expModules != null) && (expIdx < expModules.size()); expIdx++) |
| { |
| // Include any importers that have wires to the specific |
| // exported package. |
| List<Module> dependents = ((ModuleImpl) expModules.get(expIdx)).getDependentImporters(); |
| for (int depIdx = 0; (dependents != null) && (depIdx < dependents.size()); depIdx++) |
| { |
| List<Wire> wires = dependents.get(depIdx).getWires(); |
| for (int wireIdx = 0; (wires != null) && (wireIdx < wires.size()); wireIdx++) |
| { |
| if ((wires.get(wireIdx).getExporter() == expModules.get(expIdx)) |
| && (wires.get(wireIdx).hasPackage(ep.getName()))) |
| { |
| list.add(dependents.get(depIdx).getBundle()); |
| } |
| } |
| } |
| dependents = ((ModuleImpl) expModules.get(expIdx)).getDependentRequirers(); |
| for (int depIdx = 0; (dependents != null) && (depIdx < dependents.size()); depIdx++) |
| { |
| list.add(dependents.get(depIdx).getBundle()); |
| } |
| } |
| |
| // Return the results. |
| return list; |
| } |
| |
| boolean resolveBundles(Bundle[] targets) |
| { |
| // Acquire global lock. |
| boolean locked = acquireGlobalLock(); |
| if (!locked) |
| { |
| m_logger.log( |
| Logger.LOG_WARNING, |
| "Unable to acquire global lock to perform resolve.", |
| null); |
| return false; |
| } |
| |
| try |
| { |
| // Determine set of bundles to be resolved, which is either the |
| // specified bundles or all bundles if null. |
| if (targets == null) |
| { |
| List list = new ArrayList(); |
| |
| // Add all unresolved bundles to the list. |
| Iterator iter = m_installedBundles[LOCATION_MAP_IDX].values().iterator(); |
| while (iter.hasNext()) |
| { |
| BundleImpl bundle = (BundleImpl) iter.next(); |
| if (bundle.getState() == Bundle.INSTALLED) |
| { |
| list.add(bundle); |
| } |
| } |
| |
| // Create an array. |
| if (list.size() > 0) |
| { |
| targets = (Bundle[]) list.toArray(new BundleImpl[list.size()]); |
| } |
| } |
| |
| // Now resolve each target bundle. |
| boolean result = true; |
| |
| // If there are targets, then resolve each one. |
| for (int i = 0; (targets != null) && (i < targets.length); i++) |
| { |
| try |
| { |
| resolveBundle((BundleImpl) targets[i]); |
| } |
| catch (BundleException ex) |
| { |
| result = false; |
| m_logger.log(targets[i], |
| Logger.LOG_WARNING, |
| "Unable to resolve bundle " + targets[i].getBundleId(), |
| ex); |
| } |
| } |
| |
| return result; |
| } |
| finally |
| { |
| // Always release the global lock. |
| releaseGlobalLock(); |
| } |
| } |
| |
| private void resolveBundle(BundleImpl bundle) throws BundleException |
| { |
| try |
| { |
| m_felixResolver.resolve(bundle.getCurrentModule()); |
| } |
| catch (ResolveException ex) |
| { |
| if (ex.getModule() != null) |
| { |
| Bundle b = ((ModuleImpl) ex.getModule()).getBundle(); |
| throw new BundleException( |
| "Unresolved constraint in bundle " |
| + b + ": " + ex.getMessage()); |
| } |
| else |
| { |
| throw new BundleException(ex.getMessage()); |
| } |
| } |
| } |
| |
| void refreshPackages(Bundle[] targets) |
| { |
| // Acquire global lock. |
| boolean locked = acquireGlobalLock(); |
| if (!locked) |
| { |
| // If the thread calling holds bundle locks, then we might not |
| // be able to get the global lock. However, in practice this |
| // should not happen since the calls to this method have either |
| // already acquired the global lock or it is PackageAdmin which |
| // doesn't hold bundle locks. |
| throw new IllegalStateException( |
| "Unable to acquire global lock for refresh."); |
| } |
| |
| // Determine set of bundles to refresh, which is all transitive |
| // dependencies of specified set or all transitive dependencies |
| // of all bundles if null is specified. |
| Bundle[] newTargets = targets; |
| if (newTargets == null) |
| { |
| List list = new ArrayList(); |
| |
| // First add all uninstalled bundles. |
| for (int i = 0; |
| (m_uninstalledBundles != null) && (i < m_uninstalledBundles.size()); |
| i++) |
| { |
| list.add(m_uninstalledBundles.get(i)); |
| } |
| |
| // Then add all updated bundles. |
| Iterator iter = m_installedBundles[LOCATION_MAP_IDX].values().iterator(); |
| while (iter.hasNext()) |
| { |
| BundleImpl bundle = (BundleImpl) iter.next(); |
| if (bundle.isRemovalPending()) |
| { |
| list.add(bundle); |
| } |
| } |
| |
| // Create an array. |
| if (list.size() > 0) |
| { |
| newTargets = (Bundle[]) list.toArray(new Bundle[list.size()]); |
| } |
| } |
| |
| // If there are targets, then find all dependencies for each one. |
| BundleImpl[] bundles = null; |
| if (newTargets != null) |
| { |
| // Create map of bundles that import the packages |
| // from the target bundles. |
| Map map = new HashMap(); |
| for (int targetIdx = 0; targetIdx < newTargets.length; targetIdx++) |
| { |
| // Add the current target bundle to the map of |
| // bundles to be refreshed. |
| BundleImpl target = (BundleImpl) newTargets[targetIdx]; |
| map.put(target, target); |
| // Add all importing bundles to map. |
| populateDependentGraph(target, map); |
| } |
| |
| bundles = (BundleImpl[]) map.values().toArray(new BundleImpl[map.size()]); |
| } |
| |
| // Now refresh each bundle. |
| try |
| { |
| boolean restart = false; |
| |
| Bundle systemBundle = this; |
| |
| // We need to restart the framework if either an extension bundle is |
| // refreshed or the system bundle is refreshed and any extension bundle |
| // has been updated or uninstalled. |
| for (int i = 0; (bundles != null) && !restart && (i < bundles.length); i++) |
| { |
| if (systemBundle == bundles[i]) |
| { |
| Bundle[] allBundles = getBundles(); |
| for (int j = 0; !restart && j < allBundles.length; j++) |
| { |
| if (((BundleImpl) allBundles[j]).isExtension() && |
| (allBundles[j].getState() == Bundle.INSTALLED)) |
| { |
| restart = true; |
| } |
| } |
| } |
| } |
| |
| // Remove any targeted bundles from the uninstalled bundles |
| // array, since they will be removed from the system after |
| // the refresh. |
| // TODO: FRAMEWORK - Is this correct? |
| for (int i = 0; (bundles != null) && (i < bundles.length); i++) |
| { |
| forgetUninstalledBundle(bundles[i]); |
| } |
| // If there are targets, then refresh each one. |
| if (bundles != null) |
| { |
| // At this point the map contains every bundle that has been |
| // updated and/or removed as well as all bundles that import |
| // packages from these bundles. |
| |
| // Create refresh helpers for each bundle. |
| RefreshHelper[] helpers = new RefreshHelper[bundles.length]; |
| for (int i = 0; i < bundles.length; i++) |
| { |
| helpers[i] = new RefreshHelper(bundles[i]); |
| } |
| |
| // Stop, purge or remove, and reinitialize all bundles first. |
| // TODO: FRAMEWORK - this will stop the system bundle if |
| // somebody called refresh 0. Is this what we want? |
| for (int i = 0; i < helpers.length; i++) |
| { |
| if (helpers[i] != null) |
| { |
| helpers[i].stop(); |
| helpers[i].refreshOrRemove(); |
| } |
| } |
| |
| // Then restart all bundles that were previously running. |
| for (int i = 0; i < helpers.length; i++) |
| { |
| if (helpers[i] != null) |
| { |
| helpers[i].restart(); |
| } |
| } |
| } |
| |
| if (restart) |
| { |
| try |
| { |
| update(); |
| } |
| catch (BundleException ex) |
| { |
| m_logger.log(Logger.LOG_ERROR, "Framework restart error.", ex); |
| } |
| } |
| } |
| finally |
| { |
| // Always release the global lock. |
| releaseGlobalLock(); |
| } |
| |
| fireFrameworkEvent(FrameworkEvent.PACKAGES_REFRESHED, this, null); |
| } |
| |
| private void populateDependentGraph(BundleImpl exporter, Map map) |
| { |
| // Get all dependent bundles of this bundle. |
| List<Bundle> dependents = getDependentBundles(exporter); |
| |
| for (int depIdx = 0; |
| (dependents != null) && (depIdx < dependents.size()); |
| depIdx++) |
| { |
| // Avoid cycles if the bundle is already in map. |
| if (!map.containsKey(dependents.get(depIdx))) |
| { |
| // Add each importing bundle to map. |
| map.put(dependents.get(depIdx), dependents.get(depIdx)); |
| // Now recurse into each bundle to get its importers. |
| populateDependentGraph( |
| (BundleImpl) dependents.get(depIdx), map); |
| } |
| } |
| } |
| |
| // |
| // Miscellaneous private methods. |
| // |
| |
| private volatile SecurityProvider m_securityProvider; |
| |
| SecurityProvider getSecurityProvider() |
| { |
| return m_securityProvider; |
| } |
| |
| void setSecurityProvider(SecurityProvider securityProvider) |
| { |
| m_securityProvider = securityProvider; |
| } |
| |
| Object getSignerMatcher(BundleImpl bundle, int signersType) |
| { |
| if ((bundle != this) && (m_securityProvider != null)) |
| { |
| return m_securityProvider.getSignerMatcher(bundle, signersType); |
| } |
| return new HashMap(); |
| } |
| |
| boolean impliesBundlePermission(BundleProtectionDomain bundleProtectionDomain, Permission permission, boolean direct) |
| { |
| if (m_securityProvider != null) |
| { |
| return m_securityProvider.hasBundlePermission(bundleProtectionDomain, permission, direct); |
| } |
| return true; |
| } |
| |
| private BundleActivator createBundleActivator(BundleImpl impl) |
| throws Exception |
| { |
| // CONCURRENCY NOTE: |
| // This method is called indirectly from startBundle() (via _startBundle()), |
| // which has the bundle lock, so there is no need to do any locking here. |
| |
| // Get the activator class from the header map. |
| BundleActivator activator = null; |
| Map headerMap = impl.getCurrentModule().getHeaders(); |
| String className = (String) headerMap.get(Constants.BUNDLE_ACTIVATOR); |
| // Try to instantiate activator class if present. |
| if (className != null) |
| { |
| className = className.trim(); |
| Class clazz; |
| try |
| { |
| clazz = impl.getCurrentModule().getClassByDelegation(className); |
| } |
| catch (ClassNotFoundException ex) |
| { |
| throw new BundleException("Not found: " + className, ex); |
| } |
| activator = (BundleActivator) clazz.newInstance(); |
| } |
| |
| return activator; |
| } |
| |
| private void refreshBundle(BundleImpl bundle) throws Exception |
| { |
| // Acquire bundle lock. |
| try |
| { |
| acquireBundleLock(bundle, Bundle.INSTALLED | Bundle.RESOLVED); |
| } |
| catch (IllegalStateException ex) |
| { |
| throw new BundleException( |
| "Bundle state has changed unexpectedly during refresh."); |
| } |
| |
| try |
| { |
| // Reset the bundle object and fire UNRESOLVED event. |
| ((BundleImpl) bundle).refresh(); |
| } |
| catch (Exception ex) |
| { |
| fireFrameworkEvent(FrameworkEvent.ERROR, bundle, ex); |
| } |
| finally |
| { |
| // Always release the bundle lock. |
| releaseBundleLock(bundle); |
| } |
| } |
| |
| // |
| // Event-related methods. |
| // |
| |
| /** |
| * Fires bundle events. |
| **/ |
| private void fireFrameworkEvent( |
| int type, Bundle bundle, Throwable throwable) |
| { |
| m_dispatcher.fireFrameworkEvent(new FrameworkEvent(type, bundle, throwable)); |
| } |
| |
| /** |
| * Fires bundle events. |
| * |
| * @param type The type of bundle event to fire. |
| * @param bundle The bundle associated with the event. |
| **/ |
| private void fireBundleEvent(int type, Bundle bundle) |
| { |
| m_dispatcher.fireBundleEvent(new BundleEvent(type, bundle)); |
| } |
| |
| /** |
| * Fires service events. |
| * |
| * @param event The service event to fire. |
| * @param reg The service registration associated with the service object. |
| **/ |
| private void fireServiceEvent(ServiceEvent event, Dictionary oldProps) |
| { |
| m_dispatcher.fireServiceEvent(event, oldProps, this); |
| } |
| |
| // |
| // Property related methods. |
| // |
| |
| private void initializeFrameworkProperties() |
| { |
| // Standard OSGi properties. |
| m_configMutableMap.put( |
| FelixConstants.FRAMEWORK_VERSION, |
| FelixConstants.FRAMEWORK_VERSION_VALUE); |
| m_configMutableMap.put( |
| FelixConstants.FRAMEWORK_VENDOR, |
| FelixConstants.FRAMEWORK_VENDOR_VALUE); |
| m_configMutableMap.put( |
| FelixConstants.FRAMEWORK_LANGUAGE, |
| System.getProperty("user.language")); |
| m_configMutableMap.put( |
| FelixConstants.FRAMEWORK_OS_VERSION, |
| System.getProperty("os.version")); |
| m_configMutableMap.put( |
| FelixConstants.SUPPORTS_FRAMEWORK_EXTENSION, |
| "true"); |
| m_configMutableMap.put( |
| FelixConstants.SUPPORTS_FRAMEWORK_FRAGMENT, |
| "true"); |
| m_configMutableMap.put( |
| FelixConstants.SUPPORTS_FRAMEWORK_REQUIREBUNDLE, |
| "true"); |
| m_configMutableMap.put( |
| FelixConstants.SUPPORTS_BOOTCLASSPATH_EXTENSION, |
| "false"); |
| |
| String s = null; |
| s = R4LibraryClause.normalizeOSName(System.getProperty("os.name")); |
| m_configMutableMap.put(FelixConstants.FRAMEWORK_OS_NAME, s); |
| s = R4LibraryClause.normalizeProcessor(System.getProperty("os.arch")); |
| m_configMutableMap.put(FelixConstants.FRAMEWORK_PROCESSOR, s); |
| m_configMutableMap.put( |
| FelixConstants.FELIX_VERSION_PROPERTY, getFrameworkVersion()); |
| |
| // Set supported execution environments to default value, |
| // if not explicitly configured. |
| if (!getConfig().containsKey(Constants.FRAMEWORK_EXECUTIONENVIRONMENT)) |
| { |
| s = Util.getDefaultProperty( |
| m_logger, Constants.FRAMEWORK_EXECUTIONENVIRONMENT); |
| if (s != null) |
| { |
| m_configMutableMap.put( |
| Constants.FRAMEWORK_EXECUTIONENVIRONMENT, s); |
| } |
| } |
| } |
| |
| /** |
| * Read the framework version from the property file. |
| * @return the framework version as a string. |
| **/ |
| private static String getFrameworkVersion() |
| { |
| // The framework version property. |
| Properties props = new Properties(); |
| InputStream in = Felix.class.getResourceAsStream("Felix.properties"); |
| if (in != null) |
| { |
| try |
| { |
| props.load(in); |
| } |
| catch (IOException ex) |
| { |
| ex.printStackTrace(); |
| } |
| } |
| |
| // Maven uses a '-' to separate the version qualifier, |
| // while OSGi uses a '.', so we need to convert to a '.' |
| StringBuffer sb = |
| new StringBuffer( |
| props.getProperty( |
| FelixConstants.FELIX_VERSION_PROPERTY, "0.0.0")); |
| if (sb.toString().indexOf("-") >= 0) |
| { |
| sb.setCharAt(sb.toString().indexOf("-"), '.'); |
| } |
| String toRet = sb.toString(); |
| if (toRet.indexOf("${pom") >= 0) |
| { |
| return "0.0.0"; |
| } |
| else |
| { |
| return toRet; |
| } |
| } |
| |
| // |
| // Private utility methods. |
| // |
| |
| /** |
| * Generated the next valid bundle identifier. |
| **/ |
| private long loadNextId() |
| { |
| synchronized (m_nextIdLock) |
| { |
| // Read persisted next bundle identifier. |
| InputStream is = null; |
| BufferedReader br = null; |
| try |
| { |
| File file = m_cache.getSystemBundleDataFile("bundle.id"); |
| is = m_secureAction.getFileInputStream(file); |
| br = new BufferedReader(new InputStreamReader(is)); |
| return Long.parseLong(br.readLine()); |
| } |
| catch (FileNotFoundException ex) |
| { |
| // Ignore this case because we assume that this is the |
| // initial startup of the framework and therefore the |
| // file does not exist yet. |
| } |
| catch (Exception ex) |
| { |
| m_logger.log( |
| Logger.LOG_WARNING, |
| "Unable to initialize next bundle identifier from persistent storage.", |
| ex); |
| } |
| finally |
| { |
| try |
| { |
| if (br != null) br.close(); |
| if (is != null) is.close(); |
| } |
| catch (Exception ex) |
| { |
| m_logger.log( |
| Logger.LOG_WARNING, |
| "Unable to close next bundle identifier file.", |
| ex); |
| } |
| } |
| } |
| |
| return -1; |
| } |
| |
| private long getNextId() |
| { |
| synchronized (m_nextIdLock) |
| { |
| // Save the current id. |
| long id = m_nextId; |
| |
| // Increment the next id. |
| m_nextId++; |
| |
| // Write the bundle state. |
| OutputStream os = null; |
| BufferedWriter bw = null; |
| try |
| { |
| File file = m_cache.getSystemBundleDataFile("bundle.id"); |
| os = m_secureAction.getFileOutputStream(file); |
| bw = new BufferedWriter(new OutputStreamWriter(os)); |
| String s = Long.toString(m_nextId); |
| bw.write(s, 0, s.length()); |
| } |
| catch (Exception ex) |
| { |
| m_logger.log( |
| Logger.LOG_WARNING, |
| "Unable to save next bundle identifier to persistent storage.", |
| ex); |
| } |
| finally |
| { |
| try |
| { |
| if (bw != null) bw.close(); |
| if (os != null) os.close(); |
| } |
| catch (Exception ex) |
| { |
| m_logger.log( |
| Logger.LOG_WARNING, |
| "Unable to close next bundle identifier file.", |
| ex); |
| } |
| } |
| |
| return id; |
| } |
| } |
| |
| // |
| // Miscellaneous inner classes. |
| // |
| |
| public class FelixResolver |
| { |
| private final Resolver m_resolver; |
| private final FelixResolverState m_resolverState; |
| |
| public FelixResolver(Resolver resolver, FelixResolverState resolverState) |
| { |
| m_resolver = resolver; |
| m_resolverState = resolverState; |
| } |
| |
| public void resolve(Module rootModule) throws ResolveException |
| { |
| // Although there is a race condition to check the bundle state |
| // then lock it, we do this because we don't want to acquire the |
| // a lock just to check if the module is resolved, which itself |
| // is a safe read. If the module isn't resolved, we end up double |
| // check the resolved status later. |
| if (!rootModule.isResolved()) |
| { |
| // Acquire global lock. |
| boolean locked = acquireGlobalLock(); |
| if (!locked) |
| { |
| throw new ResolveException( |
| "Unable to acquire global lock for resolve.", rootModule, null); |
| } |
| |
| Map<Module, List<Wire>> wireMap = null; |
| try |
| { |
| BundleImpl bundle = (BundleImpl) rootModule.getBundle(); |
| |
| // Extensions are resolved differently. |
| if (bundle.isExtension()) |
| { |
| return; |
| } |
| |
| // If the root module to resolve is a fragment, then we |
| // must find a host to attach it to and resolve the host |
| // instead, since the underlying resolver doesn't know |
| // how to deal with fragments. |
| Module newRootModule = m_resolverState.findHost(rootModule); |
| if (!Util.isFragment(newRootModule)) |
| { |
| // Check singleton status. |
| m_resolverState.checkSingleton(newRootModule); |
| |
| boolean repeat; |
| do |
| { |
| repeat = false; |
| try |
| { |
| // Resolve the module. |
| wireMap = m_resolver.resolve(m_resolverState, newRootModule); |
| |
| // Mark all modules as resolved. |
| markResolvedModules(wireMap); |
| } |
| catch (ResolveException ex) |
| { |
| if ((ex.getRequirement() != null) |
| && (ex.getRequirement() instanceof FragmentRequirement) |
| && (rootModule != |
| ((FragmentRequirement) ex.getRequirement()).getFragment())) |
| { |
| m_resolverState.detachFragment( |
| newRootModule, |
| ((FragmentRequirement) ex.getRequirement()).getFragment()); |
| repeat = true; |
| } |
| else |
| { |
| throw ex; |
| } |
| } |
| } |
| while (repeat); |
| } |
| } |
| finally |
| { |
| // Always release the global lock. |
| releaseGlobalLock(); |
| } |
| |
| fireResolvedEvents(wireMap); |
| } |
| } |
| |
| public Wire resolve(Module module, String pkgName) throws ResolveException |
| { |
| Wire candidateWire = null; |
| // We cannot dynamically import if the module is not already resolved |
| // or if it is not allowed, so check that first. Note: We check if the |
| // dynamic import is allowed without holding any locks, but this is |
| // okay since the resolver will double check later after we have |
| // acquired the global lock below. |
| if (module.isResolved() && isAllowedDynamicImport(module, pkgName)) |
| { |
| // Acquire global lock. |
| boolean locked = acquireGlobalLock(); |
| if (!locked) |
| { |
| throw new ResolveException( |
| "Unable to acquire global lock for resolve.", module, null); |
| } |
| |
| Map<Module, List<Wire>> wireMap = null; |
| try |
| { |
| // Double check to make sure that someone hasn't beaten us to |
| // dynamically importing the package, which can happen if two |
| // threads are racing to do so. If we have an existing wire, |
| // then just return it instead. |
| List<Wire> wires = module.getWires(); |
| for (int i = 0; (wires != null) && (i < wires.size()); i++) |
| { |
| if (wires.get(i).hasPackage(pkgName)) |
| { |
| return wires.get(i); |
| } |
| } |
| |
| wireMap = m_resolver.resolve(m_resolverState, module, pkgName); |
| |
| if ((wireMap != null) && wireMap.containsKey(module)) |
| { |
| List<Wire> dynamicWires = wireMap.remove(module); |
| candidateWire = dynamicWires.get(0); |
| |
| // Mark all modules as resolved. |
| markResolvedModules(wireMap); |
| |
| // Dynamically add new wire to importing module. |
| if (candidateWire != null) |
| { |
| wires = new ArrayList(wires.size() + 1); |
| wires.addAll(module.getWires()); |
| wires.add(candidateWire); |
| ((ModuleImpl) module).setWires(wires); |
| m_logger.log( |
| module.getBundle(), |
| Logger.LOG_DEBUG, |
| "DYNAMIC WIRE: " + wires.get(wires.size() - 1)); |
| } |
| } |
| } |
| finally |
| { |
| // Always release the global lock. |
| releaseGlobalLock(); |
| } |
| |
| fireResolvedEvents(wireMap); |
| } |
| |
| return candidateWire; |
| } |
| |
| public synchronized Set<Capability> getCandidates( |
| Module reqModule, Requirement req, boolean obeyMandatory) |
| { |
| return m_resolverState.getCandidates(reqModule, req, obeyMandatory); |
| } |
| |
| // This method duplicates a lot of logic from: |
| // ResolverImpl.getDynamicImportCandidates() |
| public boolean isAllowedDynamicImport(Module module, String pkgName) |
| { |
| // Unresolved modules cannot dynamically import, nor can the default |
| // package be dynamically imported. |
| if (!module.isResolved() || pkgName.length() == 0) |
| { |
| return false; |
| } |
| |
| // If the module doesn't have dynamic imports, then just return |
| // immediately. |
| List<Requirement> dynamics = module.getDynamicRequirements(); |
| if ((dynamics == null) || dynamics.isEmpty()) |
| { |
| return false; |
| } |
| |
| // If any of the module exports this package, then we cannot |
| // attempt to dynamically import it. |
| List<Capability> caps = module.getCapabilities(); |
| for (int i = 0; (caps != null) && (i < caps.size()); i++) |
| { |
| if (caps.get(i).getNamespace().equals(Capability.PACKAGE_NAMESPACE) |
| && caps.get(i).getAttribute(Capability.PACKAGE_ATTR).getValue().equals(pkgName)) |
| { |
| return false; |
| } |
| } |
| // If any of our wires have this package, then we cannot |
| // attempt to dynamically import it. |
| List<Wire> wires = module.getWires(); |
| for (int i = 0; (wires != null) && (i < wires.size()); i++) |
| { |
| if (wires.get(i).hasPackage(pkgName)) |
| { |
| return false; |
| } |
| } |
| |
| // Loop through the importer's dynamic requirements to determine if |
| // there is a matching one for the package from which we want to |
| // load a class. |
| List<Directive> dirs = Collections.EMPTY_LIST; |
| List<Attribute> attrs = new ArrayList(1); |
| attrs.add(new Attribute(Capability.PACKAGE_ATTR, pkgName, false)); |
| Requirement req = new RequirementImpl( |
| module, Capability.PACKAGE_NAMESPACE, dirs, attrs); |
| Set<Capability> candidates = m_resolverState.getCandidates(module, req, false); |
| |
| return !candidates.isEmpty(); |
| } |
| |
| private void markResolvedModules(Map<Module, List<Wire>> wireMap) |
| { |
| if (wireMap != null) |
| { |
| Iterator<Entry<Module, List<Wire>>> iter = wireMap.entrySet().iterator(); |
| // Iterate over the map to mark the modules as resolved and |
| // update our resolver data structures. |
| while (iter.hasNext()) |
| { |
| Entry<Module, List<Wire>> entry = iter.next(); |
| Module module = entry.getKey(); |
| List<Wire> wires = entry.getValue(); |
| |
| // Only add wires attribute if some exist; export |
| // only modules may not have wires. |
| for (int wireIdx = 0; wireIdx < wires.size(); wireIdx++) |
| { |
| m_logger.log(module.getBundle(), |
| Logger.LOG_DEBUG, |
| "WIRE: " + wires.get(wireIdx)); |
| } |
| ((ModuleImpl) module).setWires(wires); |
| |
| // Resolve all attached fragments. |
| List<Module> fragments = ((ModuleImpl) module).getFragments(); |
| for (int i = 0; (fragments != null) && (i < fragments.size()); i++) |
| { |
| ((ModuleImpl) fragments.get(i)).setResolved(); |
| // Update the state of the module's bundle to resolved as well. |
| markBundleResolved(fragments.get(i)); |
| m_logger.log(((ModuleImpl) fragments.get(i)).getBundle(), |
| Logger.LOG_DEBUG, |
| "FRAGMENT WIRE: " + fragments.get(i) + " -> hosted by -> " + module); |
| } |
| // Update the resolver state to show the module as resolved. |
| ((ModuleImpl) module).setResolved(); |
| m_resolverState.moduleResolved(module); |
| // Update the state of the module's bundle to resolved as well. |
| markBundleResolved(module); |
| } |
| } |
| } |
| |
| private void markBundleResolved(Module module) |
| { |
| // Update the bundle's state to resolved when the |
| // current module is resolved; just ignore resolve |
| // events for older revisions since this only occurs |
| // when an update is done on an unresolved bundle |
| // and there was no refresh performed. |
| BundleImpl bundle = (BundleImpl) module.getBundle(); |
| |
| // Lock the bundle first. |
| try |
| { |
| // Acquire bundle lock. |
| try |
| { |
| acquireBundleLock(bundle, Bundle.INSTALLED | Bundle.RESOLVED | Bundle.ACTIVE); |
| } |
| catch (IllegalStateException ex) |
| { |
| // There is nothing we can do. |
| } |
| if (bundle.getCurrentModule() == module) |
| { |
| if (bundle.getState() != Bundle.INSTALLED) |
| { |
| m_logger.log(bundle, |
| Logger.LOG_WARNING, |
| "Received a resolve event for a bundle that has already been resolved."); |
| } |
| else |
| { |
| setBundleStateAndNotify(bundle, Bundle.RESOLVED); |
| } |
| } |
| } |
| finally |
| { |
| releaseBundleLock(bundle); |
| } |
| } |
| |
| private void fireResolvedEvents(Map<Module, List<Wire>> wireMap) |
| { |
| if (wireMap != null) |
| { |
| Iterator<Entry<Module, List<Wire>>> iter = wireMap.entrySet().iterator(); |
| // Iterate over the map to fire necessary RESOLVED events. |
| while (iter.hasNext()) |
| { |
| Entry<Module, List<Wire>> entry = iter.next(); |
| Module module = entry.getKey(); |
| |
| // Fire RESOLVED events for all fragments. |
| List<Module> fragments = ((ModuleImpl) module).getFragments(); |
| for (int i = 0; (fragments != null) && (i < fragments.size()); i++) |
| { |
| fireBundleEvent(BundleEvent.RESOLVED, fragments.get(i).getBundle()); |
| } |
| fireBundleEvent(BundleEvent.RESOLVED, module.getBundle()); |
| } |
| } |
| } |
| } |
| |
| class SystemBundleActivator implements BundleActivator, Runnable |
| { |
| public void start(BundleContext context) throws Exception |
| { |
| // Add the bundle activator for the package admin service. |
| m_activatorList.add(0, new PackageAdminActivator(Felix.this)); |
| // Add the bundle activator for the start level service. |
| m_activatorList.add(0, new StartLevelActivator(m_logger, Felix.this)); |
| // Add the bundle activator for the url handler service. |
| m_activatorList.add(0, new URLHandlersActivator(m_configMap, Felix.this)); |
| |
| // Start all activators. |
| for (int i = 0; i < m_activatorList.size(); i++) |
| { |
| Felix.m_secureAction.startActivator( |
| (BundleActivator) m_activatorList.get(i), context); |
| } |
| } |
| |
| public void stop(BundleContext context) |
| { |
| // Spec says stop() on SystemBundle should return immediately and |
| // shutdown framework on another thread. |
| if (m_shutdownThread == null) |
| { |
| // Initial call of stop, so kick off shutdown. |
| m_shutdownThread = new Thread(this, "FelixShutdown"); |
| m_shutdownThread.start(); |
| } |
| } |
| |
| public void run() |
| { |
| // The state of the framework should be STOPPING, so |
| // acquire the bundle lock to verify it. |
| acquireBundleLock(Felix.this, Bundle.STOPPING); |
| releaseBundleLock(Felix.this); |
| |
| // Use the start level service to set the start level to zero |
| // in order to stop all bundles in the framework. Since framework |
| // shutdown happens on its own thread, we can wait for the start |
| // level service to finish before proceeding by calling the |
| // non-spec setStartLevelAndWait() method. |
| try |
| { |
| StartLevelImpl sl = (StartLevelImpl) getService( |
| Felix.this, |
| getServiceReferences(Felix.this, StartLevel.class.getName(), null, true)[0]); |
| sl.setStartLevelAndWait(0); |
| } |
| catch (InvalidSyntaxException ex) |
| { |
| // Should never happen. |
| } |
| |
| // Shutdown event dispatching queue. |
| EventDispatcher.shutdown(); |
| |
| // Since there may be updated and uninstalled bundles that |
| // have not been refreshed, we will take care of refreshing |
| // them during shutdown. |
| |
| // Refresh all updated bundles. |
| Bundle[] bundles = getBundles(); |
| for (int i = 0; i < bundles.length; i++) |
| { |
| BundleImpl bundle = (BundleImpl) bundles[i]; |
| if (bundle.isRemovalPending()) |
| { |
| try |
| { |
| refreshBundle(bundle); |
| } |
| catch (Exception ex) |
| { |
| fireFrameworkEvent(FrameworkEvent.ERROR, bundle, ex); |
| m_logger.log(bundle, Logger.LOG_ERROR, "Unable to purge bundle " |
| + bundle._getLocation(), ex); |
| } |
| } |
| } |
| |
| // Delete uninstalled bundles. |
| for (int i = 0; |
| (m_uninstalledBundles != null) && (i < m_uninstalledBundles.size()); |
| i++) |
| { |
| try |
| { |
| m_uninstalledBundles.get(i).closeAndDelete(); |
| } |
| catch (Exception ex) |
| { |
| m_logger.log(m_uninstalledBundles.get(i), |
| Logger.LOG_ERROR, |
| "Unable to remove " |
| + m_uninstalledBundles.get(i)._getLocation(), ex); |
| } |
| } |
| |
| // Dispose of the bundles to close their associated contents. |
| bundles = getBundles(); |
| for (int i = 0; i < bundles.length; i++) |
| { |
| ((BundleImpl) bundles[i]).close(); |
| } |
| |
| // Stop all system bundle activators. |
| for (int i = 0; i < m_activatorList.size(); i++) |
| { |
| try |
| { |
| Felix.m_secureAction.stopActivator((BundleActivator) |
| m_activatorList.get(i), _getBundleContext()); |
| } |
| catch (Throwable throwable) |
| { |
| m_logger.log(Felix.this, |
| Logger.LOG_WARNING, |
| "Exception stopping a system bundle activator.", |
| throwable); |
| } |
| } |
| |
| if (m_securityManager != null) |
| { |
| System.setSecurityManager(null); |
| m_securityManager = null; |
| } |
| |
| if (m_extensionManager != null) |
| { |
| m_extensionManager.removeExtensions(Felix.this); |
| } |
| |
| // Set the framework state to resolved. |
| acquireBundleLock(Felix.this, Bundle.STOPPING); |
| try |
| { |
| // Clean up the bundle context. |
| ((BundleContextImpl) _getBundleContext()).invalidate(); |
| setBundleContext(null); |
| |
| // Set the framework state to resolved and open |
| // the shutdown gate. |
| setBundleStateAndNotify(Felix.this, Bundle.RESOLVED); |
| m_shutdownGate.open(); |
| m_shutdownGate = null; |
| m_shutdownThread = null; |
| } |
| finally |
| { |
| releaseBundleLock(Felix.this); |
| } |
| } |
| } |
| |
| /** |
| * Simple class that is used in <tt>refreshPackages()</tt> to embody |
| * the refresh logic in order to keep the code clean. This class is |
| * not static because it needs access to framework event firing methods. |
| **/ |
| private class RefreshHelper |
| { |
| private BundleImpl m_bundle = null; |
| private int m_oldState = Bundle.INSTALLED; |
| |
| public RefreshHelper(Bundle bundle) |
| { |
| m_bundle = (BundleImpl) bundle; |
| } |
| |
| public void stop() |
| { |
| // TODO: LOCKING - This is not really correct. |
| if (m_bundle.getState() == Bundle.ACTIVE) |
| { |
| m_oldState = Bundle.ACTIVE; |
| try |
| { |
| stopBundle(m_bundle, false); |
| } |
| catch (Throwable ex) |
| { |
| fireFrameworkEvent(FrameworkEvent.ERROR, m_bundle, ex); |
| } |
| } |
| } |
| |
| public void refreshOrRemove() |
| { |
| try |
| { |
| // Delete or refresh the bundle depending on its |
| // current state. |
| if (m_bundle.getState() == Bundle.UNINSTALLED) |
| { |
| m_bundle.closeAndDelete(); |
| m_bundle = null; |
| } |
| else |
| { |
| // This removes all old bundle modules from memory and |
| // all old revisions from disk. It only maintains the |
| // newest version in the bundle cache. |
| refreshBundle(m_bundle); |
| } |
| } |
| catch (Throwable ex) |
| { |
| fireFrameworkEvent(FrameworkEvent.ERROR, m_bundle, ex); |
| } |
| } |
| |
| public void restart() |
| { |
| if ((m_bundle != null) && (m_oldState == Bundle.ACTIVE)) |
| { |
| try |
| { |
| // TODO: LAZY - Not sure if this is the best way... |
| int options = Bundle.START_TRANSIENT; |
| options = (m_bundle.getPersistentState() == Bundle.STARTING) |
| ? options | Bundle.START_ACTIVATION_POLICY |
| : options; |
| startBundle(m_bundle, options); |
| } |
| catch (Throwable ex) |
| { |
| fireFrameworkEvent(FrameworkEvent.ERROR, m_bundle, ex); |
| } |
| } |
| } |
| } |
| |
| private static class ListenerHookRemovedCallback implements InvokeHookCallback |
| { |
| private final Collection /* ListenerHookInfo */ m_removed; |
| |
| ListenerHookRemovedCallback(Collection /* ListenerHookInfo */ removed) |
| { |
| m_removed = removed; |
| } |
| |
| public void invokeHook(Object hook) |
| { |
| ((ListenerHook) hook).removed(m_removed); |
| } |
| } |
| |
| // Compares bundles by start level either ascending or |
| // descending depending on whether the start level is being |
| // lowered or raised. Within a start level sort by bundle ID. |
| private class BundleComparator implements Comparator |
| { |
| private final boolean m_lowering; |
| |
| BundleComparator(boolean lowering) |
| { |
| m_lowering = lowering; |
| } |
| |
| public int compare(Object o1, Object o2) |
| { |
| int result = -1; |
| |
| BundleImpl b1 = (BundleImpl) o1; |
| BundleImpl b2 = (BundleImpl) o2; |
| if (b1.getStartLevel(getInitialBundleStartLevel()) |
| < b2.getStartLevel(getInitialBundleStartLevel())) |
| { |
| result = 1; |
| } |
| else if (b1.getStartLevel(getInitialBundleStartLevel()) |
| > b2.getStartLevel(getInitialBundleStartLevel())) |
| { |
| result = -1; |
| } |
| else if (b1.getBundleId() < b2.getBundleId()) |
| { |
| result = 1; |
| } |
| |
| if (!m_lowering) |
| { |
| result = result * -1; |
| } |
| |
| return result; |
| } |
| } |
| |
| // |
| // Locking related methods. |
| // |
| |
| private void rememberUninstalledBundle(BundleImpl bundle) |
| { |
| boolean locked = acquireGlobalLock(); |
| if (!locked) |
| { |
| // If the calling thread holds bundle locks, then we might not |
| // be able to get the global lock. |
| throw new IllegalStateException( |
| "Unable to acquire global lock to record uninstalled bundle."); |
| } |
| try |
| { |
| // Verify that the bundle is not already in the array. |
| for (int i = 0; |
| (m_uninstalledBundles != null) && (i < m_uninstalledBundles.size()); |
| i++) |
| { |
| if (m_uninstalledBundles.get(i) == bundle) |
| { |
| return; |
| } |
| } |
| |
| // Use a copy-on-write approach to add the bundle |
| // to the uninstalled list. |
| List<BundleImpl> uninstalledBundles = new ArrayList(m_uninstalledBundles); |
| uninstalledBundles.add(bundle); |
| m_uninstalledBundles = uninstalledBundles; |
| } |
| finally |
| { |
| releaseGlobalLock(); |
| } |
| } |
| |
| private void forgetUninstalledBundle(BundleImpl bundle) |
| { |
| boolean locked = acquireGlobalLock(); |
| if (!locked) |
| { |
| // If the calling thread holds bundle locks, then we might not |
| // be able to get the global lock. |
| throw new IllegalStateException( |
| "Unable to acquire global lock to release uninstalled bundle."); |
| } |
| try |
| { |
| if (m_uninstalledBundles == null) |
| { |
| return; |
| } |
| |
| // Use a copy-on-write approach to remove the bundle |
| // from the uninstalled list. |
| List<BundleImpl> uninstalledBundles = new ArrayList(m_uninstalledBundles); |
| uninstalledBundles.remove(bundle); |
| m_uninstalledBundles = uninstalledBundles; |
| } |
| finally |
| { |
| releaseGlobalLock(); |
| } |
| } |
| |
| void acquireInstallLock(String location) |
| throws BundleException |
| { |
| synchronized (m_installRequestLock_Priority1) |
| { |
| while (m_installRequestMap.get(location) != null) |
| { |
| try |
| { |
| m_installRequestLock_Priority1.wait(); |
| } |
| catch (InterruptedException ex) |
| { |
| throw new BundleException("Unable to install, thread interrupted."); |
| } |
| } |
| |
| m_installRequestMap.put(location, location); |
| } |
| } |
| |
| void releaseInstallLock(String location) |
| { |
| synchronized (m_installRequestLock_Priority1) |
| { |
| m_installRequestMap.remove(location); |
| m_installRequestLock_Priority1.notifyAll(); |
| } |
| } |
| |
| void setBundleStateAndNotify(BundleImpl bundle, int state) |
| { |
| synchronized (m_bundleLock) |
| { |
| bundle.__setState(state); |
| m_bundleLock.notifyAll(); |
| } |
| } |
| |
| /** |
| * This method acquires the lock for the specified bundle as long as the |
| * bundle is in one of the specified states. If it is not, an exception |
| * is thrown. Bundle state changes will be monitored to avoid deadlocks. |
| * @param bundle The bundle to lock. |
| * @param desiredStates Logically OR'ed desired bundle states. |
| * @throws java.lang.IllegalStateException If the bundle is not in one of the |
| * specified desired states. |
| **/ |
| void acquireBundleLock(BundleImpl bundle, int desiredStates) |
| throws IllegalStateException |
| { |
| synchronized (m_bundleLock) |
| { |
| // Wait if the desired bundle is already locked by someone else |
| // or if any thread has the global lock, unless the current thread |
| // holds the global lock or the bundle lock already. |
| while (!bundle.isLockable() || |
| ((bundle.getLockingThread() != Thread.currentThread()) |
| && (m_globalLockThread != null) |
| && (m_globalLockThread != Thread.currentThread()))) |
| { |
| // Check to make sure the bundle is in a desired state. |
| // If so, keep waiting. If not, throw an exception. |
| if ((desiredStates & bundle.getState()) == 0) |
| { |
| throw new IllegalStateException("Bundle in unexpected state."); |
| } |
| // If the calling thread already owns the global lock, then make |
| // sure no other thread is trying to promote a bundle lock to a |
| // global lock. If so, interrupt the other thread to avoid deadlock. |
| else if (m_globalLockThread == Thread.currentThread() |
| && (bundle.getLockingThread() != null) |
| && m_globalLockWaitersList.contains(bundle.getLockingThread())) |
| { |
| bundle.getLockingThread().interrupt(); |
| } |
| |
| try |
| { |
| m_bundleLock.wait(); |
| } |
| catch (InterruptedException ex) |
| { |
| // Ignore and just keep waiting. |
| } |
| } |
| |
| // Now that we can acquire the bundle lock, let's check to make sure |
| // it is in a desired state; if not, throw an exception and do not |
| // lock it. |
| if ((desiredStates & bundle.getState()) == 0) |
| { |
| throw new IllegalStateException("Bundle in unexpected state."); |
| } |
| |
| // Acquire the bundle lock. |
| bundle.lock(); |
| } |
| } |
| |
| /** |
| * Releases the bundle's lock. |
| * @param bundle The bundle whose lock is to be released. |
| * @throws java.lang.IllegalStateException If the calling thread does not |
| * own the bundle lock. |
| **/ |
| void releaseBundleLock(BundleImpl bundle) |
| { |
| synchronized (m_bundleLock) |
| { |
| // Unlock the bundle. |
| bundle.unlock(); |
| // If the thread no longer holds the bundle lock, |
| // then remove it from the held lock map. |
| if (bundle.getLockingThread() == null) |
| { |
| m_bundleLock.notifyAll(); |
| } |
| } |
| } |
| |
| /** |
| * Promotes a bundle lock to the global lock. This is called by a thread |
| * wanting the global lock, but already holding a bundle lock (currently |
| * only when updating a bundle). Since it is possible to deadlock when |
| * trying to acquire the global lock while holding a bundle lock, this |
| * method may fail if a potential deadlock is detected. |
| * @param bundle The bundle already locked by the calling thread. |
| * @return <tt>true</tt> if the global lock was successfully acquired, |
| * <tt>false</tt> otherwise. |
| **/ |
| private boolean acquireGlobalLock() |
| { |
| synchronized (m_bundleLock) |
| { |
| // Wait as long as some other thread holds the global lock |
| // and the current thread is not interrupted. |
| boolean interrupted = false; |
| while (!interrupted |
| && (m_globalLockThread != null) |
| && (m_globalLockThread != Thread.currentThread())) |
| { |
| // Add calling thread to global lock waiters list. |
| m_globalLockWaitersList.add(Thread.currentThread()); |
| // We need to wake up all waiting threads so we can |
| // recheck for potential deadlock in acquireBundleLock() |
| // if this thread was holding a bundle lock and is now |
| // trying to promote it to a global lock. |
| m_bundleLock.notifyAll(); |
| // Now wait for the global lock. |
| try |
| { |
| m_bundleLock.wait(); |
| } |
| catch (InterruptedException ex) |
| { |
| interrupted = true; |
| } |
| // At this point we are either interrupted or will get the |
| // global lock, so remove the thread from the waiters list. |
| m_globalLockWaitersList.remove(Thread.currentThread()); |
| } |
| |
| // Check to see if we were interrupted, which means someone |
| // with the global lock wants our bundle lock, so we should |
| // fail gracefully. |
| if (!interrupted) |
| { |
| // Increment the current thread's global lock count. |
| m_globalLockCount++; |
| m_globalLockThread = Thread.currentThread(); |
| } |
| |
| // Note: If the thread was interrupted, there is no reason to notify |
| // anyone, since the thread was likely interrupted to force it to give |
| // up a bundle lock it is holding. When it does give up the bundle |
| // lock, it will do a notifyAll() in there. |
| |
| return !interrupted; |
| } |
| } |
| |
| /** |
| * Releases the global lock. |
| * @throws java.lang.IllegalStateException If the calling thread does not |
| * own the global lock. |
| **/ |
| private void releaseGlobalLock() |
| { |
| synchronized (m_bundleLock) |
| { |
| // Decrement the current thread's global lock count; |
| if (m_globalLockThread == Thread.currentThread()) |
| { |
| m_globalLockCount--; |
| if (m_globalLockCount == 0) |
| { |
| m_globalLockThread = null; |
| m_bundleLock.notifyAll(); |
| } |
| } |
| else |
| { |
| throw new IllegalStateException( |
| "The current thread doesn't own the global lock."); |
| } |
| } |
| } |
| |
| private volatile URLHandlersActivator m_urlHandlersActivator; |
| |
| void setURLHandlersActivator(URLHandlersActivator urlHandlersActivator) |
| { |
| m_urlHandlersActivator = urlHandlersActivator; |
| } |
| |
| Object getStreamHandlerService(String protocol) |
| { |
| return m_urlHandlersActivator.getStreamHandlerService(protocol); |
| } |
| |
| Object getContentHandlerService(String mimeType) |
| { |
| return m_urlHandlersActivator.getContentHandlerService(mimeType); |
| } |
| } |