Knopflerfish News Archive

Corrected issue that caused factory components to be falsely created or missed being created when using target filters. A test-cases for this has also been added the KF test suite.

Improved support for Resolver in Repository Manager bundle. Updated Repository console and desktop bundles to use the improved support. Resolver and Repository APIs are now embedded in Repository Manager bundle.

The repository console commands and repository manager bundles now have support for the Resolver Service 1.0 specification. The install command now has an optional [-r] flag that will try to find and install (and start if that option is given) the recursive dependencies of the bundle you are trying to install. Please see this Knopflerfish blog entry for more information.

Knopflerfish 5.0.0 is now officially released, the new major OSGi R5 compliant release of the leading open source based OSGi run-time for embedded use. To further emphasize the embeededness, KF5 includes a new, compact version of the OSGi R5 framework, occupying no more than 316K of disk space.

• Knopflerfish OSGi framework and OSGi Compendium Services are all updated to OSGi R5
• A compact version of framework, occupying no more than 316K of disk-space
• KF5 fully uses the OSGi specified repository format. Former KF formats (OBR) have been deprecated. New Repository Manager bundle, new console commands for interacting with the repository manager, as well as new Repository Desktop manager.
• All Knopflerfish bundles, e.g. desktop, console commands etc have been update to use and reflect the new R5 APIs.
• Simplified process for building Knopflerfish with Java 7

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

The KF5 overview page presents an overview of OSGi R5 and what features are supported in Knopflerfish 5.

Knopflerfish 4.0.1 is a bug fix release of Knopflerfish 4 / OSGi R4 v4.3, collecting all bug fixes made on the Knopflerfish trunk since KF 4.0.0 was released. The Knopflerfish 5 release is just around the corner and concurrent with the KF5 release the Knopflerfish svn trunk will be switched to KF5 / OSGi R5. The 4.0.1 release therefore also marks the end of KF4 as the main development branch.

Stay tuned for more exciting news on Knopflerfish 5 next week!

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

Incorrect import-package removed.

Knopflerfish 5.0.0.beta-1 is the first beta release of KF5, the next major release of Knopflerfish, designed to be compliant with the OSGi R5 specifications. The KF5 overview page presents an overview of OSGi R5 and the current status of KF5.

• Knopflerfish OSGi framework updated to R5
• Repository services added. This is still work i progress
• CM has a new concept of targeted PIDs as well as API changes. The KF OSGi CM bundle has been updated accordingly
• Other Knopflerfish bundles, e.g. desktop, console commands etc have been update to use and reflect the new R5 APIs.

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

• Fixed bug that caused the instance properties to be ignored for certain factory components.
• Fixed dead-lock during component activation.
• Widen the search for circular component activations to include components that might be activated depending on CM and/or instance properties.

Corrected missing export of the following packages:
org.osgi.framework.hooks.bundle;version=1.0,
org.osgi.framework.hooks.weaving;version=1.0
org.osgi.framework.hooks.resolver;version=1.0

Knopflerfish 4 is the next major release of Knopflerfish. KF4 is designed to be compliant with the OSGi R4 v4.3 specifications.

The new KF4 release support all core features as well as the the OSGi Services relevant for the embedded and desktop markets. The KF4 overview page presents a detailed overview of KF4 and OSGi R4 v4.3. A short summary is presented below.

• 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.
• Declarative Services updates
• Knopflerfish bundles, e.g. desktop, console commands etc, are all update to use and reflect the new 4.3 APIs.

In addition to the upgrade to OSGi R4 v4.3 KF4 includes several new Knopflerfish features and fixes:

• The class weaving using ASM has been been moved into a separate classpatcher bundle that implements a Weaving Hook.
• General change to to all timer / timer functions to System.nanoTime() instead of System.currentTimeMillis() to avoid timer problems when correcting system clock.
• The Android support has been extended with functions for building an Android .apk containing Knopflerfish.
• The KF Directory Deployer bundle has been given an overhaul and a new feature for deployment of XML-files with OSGi CM configurations has been added.
• Several new features in the CM-Desktop plug-in, in particular functions for handling the CM Meta data XML document used by the Directory Deployer.
• The Desktop bundle fully support the new Wiring-API as well as several minor usability improvements
• The frameworkcommands bundle has been extended to support the new Wiring API and has several new commands, e.g. "wiring" and "capability".
• Maven source and javadoc attachments for all bundle artifacts are now generated.

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

Knopflerfish 3.6 is the next minor KF3 release and includes several fixes and improvement in the core OSGi framework, the OSGi compendium services, and the Knopflerfish services.

The 3.6 release also marks the end of KF3 as the main development version in the KF trunk. With the 3.6 release the Knopflerfish SVN trunk is switched to KF4 / OSGi R4 v4.3, preparing for the imminent release of Knopflerfish 4.0.

The KF3 maintenance branch is available in SVN at:
https://www.knopflerfish.org/svn/knopflerfish.org/branches/kf_3_support/

• Stability issues corrected in the Knopflerfish OSGi framework
• Several stability issues corrected in Declarative Services (SCR), e.g. bind/unbind issues, filter properties
• Switched to use System.nanoTime() in the framework and all bundles to avoid timer problems when correcting system clocks.
• Corrected resource leaks in HTTP server and corrected Data header formats
• Corrected issue in Preference service when running with security

• Error message added when there is a mismatch on bind, modify and unbind calls.
• Factory components are not deactivated when last consumer ungets service. A test case has been added for that to the KF test suite.

• Corrected issue in SCR. Bind and unbind was not called for all references for all factory component instances.

• Corrected issue that caused delayed components to deadlock during deactivation. A test case for this has been added to the KF test suite.

• Fixed typo that caused ArrayIndexOutOfBoundsException in "scr list" command.

• Fixed NPE in framework start-level controller.

• Corrected issues regarding signed bundles being incorrectly marked as not completely signed. There also seems to be a problem in the JarInputStream class implementation in Oracle JRE (Java 6 & 7). If there are user/non standard jar related files in the META-INF directory in the bundle's JAR, and they directly follow the standard META-INF signature related files, the Oracle JRE fails to find the certificates for the additional files, and KF will mark the bundle as not completely signed. Setting the property org.knopflerfish.framework.bundlestorage.file.jar_verifier_bug to true will instruct KF to assume they are properly signed.

  The versions 5.3.8 and 5.3.9 of the framework shall be regarded as intermediate releases and can be ignored as they didn't address all problems.

Knopflerfish 4.0.0.beta-2 is the second beta release of KF4, the next major release of Knopflerfish, designed to be compliant with the OSGi R4 v4.3 specifications.

Compared to the first beta-1 release of KF4 / OSGi R4 v4.3, the second beta release includes several new features and fixes:

• With the completion of Declarative Services KF4 beta-2 implement OSGi R4 v4.3 fully.
• Android support is restored and functions for building an Android .apk containing Knopflerfish has been added.
• The class weaving using ASM has been been moved into a separate classpatcher bundle that implements a Weaving Hook.
• The KF Directory Deployer bundle has been given an overhaul and a new feature for deployment of XML-files with OSGi CM configurations has been added.
• Several new features in the CM-Desktop plug-in, in particular functions for handling the CM Meta data XML document used by the Directory Deployer.
• Desktop bundle includes several minor improvements

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

The KF4 overview page presents an overview of OSGi R4 v4.3 and the current status of KF4.

• Corrected issue with target filter properties that are string arrays with one element.

• Corrected NPE that could occur in log message creation during shutdown of bundles.

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

• Updated framework with improved thread handling for listeners including support for asynchronous listeners.
• Reduced bundle start-up time
• Improved and faster log bundle
• Several fixes and minor improvements in the desktop bundle

We apologize for the inconvenience.

The web site is now up and running again. However the svn repository, mail and mail lists are not yet functional. Hopefully everything should be restored back to normal again during the weekend.

We apologize for the inconvenience.

The eclipse plug-in can be installed/updated using the Eclipse software update mechanism. See the plug-in instructions for more details.

The eclipse plug-in can be installed/updated using the Eclipse software update mechanism. See the plug-in instructions for more details.

The OSGi Alliance hosts an OSGi Bundle Repository to which the KF bundle repo is linked.

This beta-4 is available for download here.

The only remaining optional feature before full R4 compliance is Permissions. Support for Permissions is scheduled for release in March 2006.

This beta-3 is available for download here.

The release schedule for KF 2 is updated to include a possible third beta release adding R4 security features before going to the final 2.0 release.

This beta-2 is available for download here.