Package org.jclouds.osgi

Class MetadataBundleListener

java.lang.Object
org.jclouds.osgi.MetadataBundleListener
All Implemented Interfaces:
EventListener, org.osgi.framework.BundleListener
public class MetadataBundleListener extends Object implements org.osgi.framework.BundleListener
A BundleListener that listens for BundleEvent and searches for ProviderMetadata and ApiMetadata in newly installed Bundles. This is used as a workaround for OSGi environments where the ServiceLoader cannot cross bundle boundaries.

  • Constructor Details

    • MetadataBundleListener

      public MetadataBundleListener()

  • Method Details

    • start

      public void start(org.osgi.framework.BundleContext bundleContext)
      Starts the listener. Checks the bundles that are already active and registers ProviderMetadata and ApiMetadata found. Registers the itself as a BundleListener.
      Parameters:
      bundleContext -

    • stop

      public void stop(org.osgi.framework.BundleContext bundleContext)
      Stops the listener. Removes itself from the BundleListeners. Clears metadata maps and listeners lists.
      Parameters:
      bundleContext -

    • bundleChanged

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

    • listProviderMetadata

      public Iterable<ProviderMetadata> listProviderMetadata(org.osgi.framework.Bundle bundle)
      Creates an instance of ProviderMetadata from the Bundle.
      Parameters:
      bundle -
      Returns:

    • listApiMetadata

      public Iterable<ApiMetadata> listApiMetadata(org.osgi.framework.Bundle bundle)
      Creates an instance of ApiMetadata from the Bundle.
      Parameters:
      bundle -
      Returns:

    • addProviderListener

      public void addProviderListener(ProviderListener listener)
      Adds a ProviderListener and notifies it of existing ProviderMetadata.
      Parameters:
      listener - The listener.

    • removeProviderListener

      public void removeProviderListener(ProviderListener listener)
      Removes the ProviderListener
      Parameters:
      listener - The listener

    • addApiListenerListener

      public void addApiListenerListener(ApiListener listener)
      Adds a ApiListener and notifies it of existing ApiMetadata.
      Parameters:
      listener -

    • removeApiListenerListener

      public void removeApiListenerListener(ApiListener listener)
      Removes the ApiListener
      Parameters:
      listener -