Package org.glassfish.tyrus.core

Class OsgiRegistry

java.lang.Object
org.glassfish.tyrus.core.OsgiRegistry
All Implemented Interfaces:
EventListener, org.osgi.framework.BundleListener, org.osgi.framework.SynchronousBundleListener
public final class OsgiRegistry extends Object implements org.osgi.framework.SynchronousBundleListener
Taken from Jersey 2. Utility class to deal with OSGi runtime specific behavior. This is mainly to handle META-INF/services lookup and generic/application class lookup issue in OSGi.

When OSGi runtime is detected by the ServiceFinder class, an instance of OsgiRegistry is created and associated with given OSGi BundleContext. META-INF/services entries are then being accessed via the OSGi Bundle API as direct ClassLoader#getResource() method invocation does not work in this case within OSGi.

Author:
Jakub Podlesak

  • Method Details

    • getInstance

      public static OsgiRegistry getInstance()
      Returns an OsgiRegistry instance. Call this method only if sure that the application is running in OSGi environment, otherwise a call to this method can lead to an ClassNotFoundException.
      Returns:
      an OsgiRegistry instance.

    • bundleChanged

      public void bundleChanged(org.osgi.framework.BundleEvent event)
      Specified by:
      bundleChanged in interface org.osgi.framework.BundleListener

    • getPackageResources

      public Enumeration<URL> getPackageResources(String packagePath, ClassLoader classLoader)

    • classForNameWithException

      public Class<?> classForNameWithException(String className) throws ClassNotFoundException
      Get the Class from the class name.

      The context class loader will be utilized if accessible and non-null. Otherwise the defining class loader of this class will be utilized.

      Parameters:
      className - the class name.
      Returns:
      the Class, otherwise null if the class cannot be found.
      Throws:
      ClassNotFoundException - if the class cannot be found.

    • getResourceBundle

      public ResourceBundle getResourceBundle(String bundleName)
      Tries to load resource bundle via OSGi means. No caching involved here, as localization properties are being cached in Localizer class already.
      Parameters:
      bundleName - name of the resource bundle to load
      Returns:
      resource bundle instance if found, null otherwise

    • hookUp

      public void hookUp()
      Will hook up this instance with the OSGi runtime. This is to actually update SPI provider lookup and class loading mechanisms in Jersey to utilize OSGi features.