News

The use of System.currentTimeMillis() has been replaced with System.namoTime() in the Knopflerfish OSGi framework as well as all KF bundles to avoid problems with timers when resetting the system clock. If System.nanoTime() is not available, e.g java 1.4 and older, the timers will default back to to System.currentTimeMillis().

Knopflerfish 4.0.0.beta-1 is the first beta release of KF4, the next major release of Knopflerfish, designed to be compliant with the OSGi R4 v4.3 specifications. The KF4 overview page presents an overview of OSGi R4 v4.3 and the current status of KF4.

• Generics - core API now uses generics
• Capabilities - generic requirements and capabilities
• Bundle Wiring API - provide information how requirements and provided capabilities have been resolved by the framework. Replaces PackageAdmin
• Adapt pattern - new adapt method on the Bundle class
• Framework hooks - mechanism to plug into the framework for close interaction, Resolver Hooks, Bundle Hooks, Service Hooks, Weaving Hooks.
• Knopflerfish bundles, e.g. desktop, console commands etc, are all update to use and reflect the new 4.3 APIs.

The Release Notes includes the complete list of features and fixes.

• Fix for Require-Bundle on system bundle. See also http://sourceforge.net/p/gatespace/bugs/173/

• When all of the transaction threads can not be terminated on shut-down of the http bundle, we can not destroy the transaction manager thread group.
• Fixed a resource leaks in the TransactionManager class. (Http 3.1.4) See https://sourceforge.net/p/gatespace/bugs/175/

• Date headers could be messed up since the SimpleDateFormat instances used for the formating was shared without any synchronization. All usages of the shared date formatters are now properly synchronized. See https://sourceforge.net/p/gatespace/bugs/174/
• The expires date in cookie headers is now in GMT (UTC) which is a requirement in RFC 2616 section 3.3.1 and also in RFC 6265. (HTTP 3.1.3)

Two new properties added to further control the thread executing the bundle's start/stop methods. For a full description see the framework documentation.

• org.knopflerfish.framework.bundlethread.timeout - Use this property to set a limit on how long the framework will wait for a bundle's activator to complete and return from the start and stop methods.
• org.knopflerfish.framework.bundlethread.abort - If a bundle's start() or stop() method has not returned and the bundle gets uninstalled this property defines how to manage the bundle's start/stop thread.

• Code requiring permissions have been wrapped in do-privileged constructions. Prefs should now work as expected with security enabled.

• Corrected issue with data directory for system bundle
• Corrected initialization and synchronization issues in URLStreamHandlers

• Stability issues corrected in the Knopflerfish OSGi framework
• Several stability issues corrected in Declarative Services (SCR), e.g. potential race conditions, re-bind and re-registration issues.
• Corrected resource / memory leak in User Admin
• Framework commands supports printing thread stack traces and filter which threads to show.
• SCR commands now support showing "satisfied" or "unsatisfied" applications.
• Corrected issued preventing Eclipse Gemini Blueprint from running correctly on Knopflerfish

• Fixed NPE when uninstalling a bundle simultaneously from multiple threads.

• Fix for leaking service listeners (LogRef:s)

• Fixed a bug when calculating candidate objectClasses that can match a given ldap-expression.
• Fixed possible NullPointerException in ServiceListenerState.

• Fixed conflicting interpretation of the string form URL; the http client connector expects non-escaped URLs (no %HH encoded characters) but the internal proxy handler expected text URLs that complied to RFC 2396 (all illegal chars %HH encoded). The internal proxy class now also assumes non-escaped URLs when parsing.
• The non-proxy hosts was parsed incorrectly.

• Added support for framework extensions that needs to register services or keep track of the creation / termination of bundle class loaders.

• Fixed ServiceReference.isAssignableTo() so that correctly handles exported packages from fragments and extensions.
• Changed ServiceFactory handling so that it only sends a framework warning event instead of a framework error event when the ServiceFactory.getService() returns null.
• Fixed permission problem when storing initial bundle start level.
• Fixed race condition when doing refreshPackages on an uninstalling bundle.

• Fixed so that postponed binds are not rebinded to early.
• Corrected unbind service reference count handling.

• Fixed race condition in ComponentFactory.newInstance()

• Fixed so that BundleURLConnection.getInputStream() throws IOException as it should, instead of returning null.

• Corrected race condition NPE when doing ServiceReference.(un)getService() on an unregistering service.

• Fixed bind/unbind calls on a re-enabled component.
• Fixed NPE when logging to a component bundle.

• Corrected issue with NPE when doing ServiceReference.isAssignableTo on a unregistered service.

• Added "-s" and "-u" flag to the "list" command to limit the components listed to satisified or unsatisifed.

• Fixed so that delayed components that still was satisfied re-registered after being deactivated (This fixes the problem that scrcommands only works once).
• Handle when trying to do newInstance on an unregistered ComponentFactory.
• Fix so that static service references is valid during deactivate.
• Fixed so that circular deactivate works, this by doing unbind of dynamic optional references before deactivating a component.

• The Service-Component XML presentation in the manifest-tab now links to the list of SCR components by name also when an XML-namespace prefix is present on the component-element.

• Added "-s" flag to "threads" command for printing a stack trace for the thread (Only works on java 1.5 and later).
• Added possibility to filter which threads to show.

• Several stability issues corrected in SCR (Declarative Services), e.g. correcting potential deadlocks and improved circular component reference handling.
• New SCR display in KF Desktop, showing information on SCR components.
• Corrected potential race conditions in framwork.
• Updated framework / system bundle symbolic name, version and other header values.
• Corrected NPE in EventAdmin when handling unregistered services.
• An http console command group has been added to the HTTP server for inspecting the settings and status of the HTTP server.

• New displayer that shows SCR components (a.k.a. declarative services) defined by a bundle. The state of the component as well as the state of its references are shown.
• Optimizations: When the bundle selection state changes off-screen displayer will not be updated.
• The navigation buttons (back, forward) at the bottom of some displayers now updates and remembers the links when clicking on a link in the it. The navigation history is cleared when a displayer becomes visible.

• Corrected framework stability issues, e.g. detecting and abort recursive service factory calls, issue with deadlock in service listeners
• SCR (component) now supports the Felix SCR API. This is used by the new SCR Commands bundle, see below
• scrcommands - new console command group bundle for controlling and inspecting service components
• Corrected stability issues in SCR, Event Admin, CM and HTTP
• Enhanced support for Android, including support for Android 4 and handling the crippled java security classes in Dalvik
• Improved bundle sort order in desktop
• HTTP PUT and DELETE supported by HttpClientConnector

The new version is available from the KF Eclipse update site:
http://www.knopflerfish.org/eclipse-update/

The new version is available from the KF Eclipse update site:
http://www.knopflerfish.org/eclipse-update/

HTTP bundle 3.0.9 released. Closing input streams more eagerly to avoid false positive CloseGuard warnings on Android.

This fix affects primarily the API version of certain bundles which exports multiple packages, and previously did not explicitly import their own exported packages. The bundles listed below are all such API bundles. They have been updated to a new bug fix version (x.x.N) and are now corrected to have an implicit import of their respective exported packages.

• Blueprint (API) 1.0.1
• Deployment Admin (API) 1.0.2
• DMTree 1.0.2
• HTTP-Server 3.0.6
• IO (API) 3.0.1
• Log Service 3.0.6
• User Admin 3.0.2
• Desktop 3.1.7
• JSDK 2.5.0.kf3-2
• Serial Port Device 2.0.1

API bundles with a single exported package are also affected and will get the same implicit import. However the bundle version of these bundles have not been updated since this change has no real impact on such bundles.

The "_all" bundles are also affected such that they get the same version range on implicit imports. Previously they would get an implicit import with exactly the same version as the export.

The implementation versions of the bundles are not affected by this change.

• Refactored fragment handling and full support for dynamic fragment attachment
• Improved handling of hanging bundle threads in start and stop methods,
• Bugfixes in Conditional Permission Admin
• Improved HTTP server, better handling persistent connections as well as handling DoS attacks
• Fixed stability issues in Component (SCR)
• Improved Android / Dalvik support
• New tutorials for Security and Android