Package de.xima.fc.cluster.interfaces.observer

Interface IClusterTopologyObserver

All Superinterfaces:
Serializable
All Known Implementing Classes:
ClusterTopologyObserver
public interface IClusterTopologyObserver extends Serializable
An observer that can be used to listen for changes to the cluster topology (e.g. when a node is added or removed from the cluster).
Since:
3.1.0
Author:
XIMA MEDIA GmbH

  • Method Details

    • onNodeJoined

      void onNodeJoined(NodeJoinEvent event)
      Method that should be called when a node was added to the cluster. This method should invoke the appropriate listeners added via addListener(IClusterTopologyListener).
      Parameters:
      event - Details about the node that joined the cluster.

    • onNodeLeft

      void onNodeLeft(NodeLeftEvent event)
      Method that should be called when a node was removed from the cluster. This method should invoke the appropriate listeners added via addListener(IClusterTopologyListener).
      Parameters:
      event - Details about the node that left the cluster.

    • onNodeCrashSuspect

      @Deprecated default void onNodeCrashSuspect(NodeCrashSuspectedEvent event)
      Deprecated.
      This event is not supported anymore. There is no replacement.
      Method that should be called when the connection to a node may have been lost. This method should invoke the appropriate listeners added via addListener(IClusterTopologyListener).
      Parameters:
      event - Details about the node that is suspected to have lost the connection to the cluster.

    • addListener

      void addListener(IClusterTopologyListener listener)
      Adds a listener that will be invoked when an event related to a change in the cluster topology occurs.
      Parameters:
      listener - Listener to add that will be invoked when an event occurs.

    • removeListener

      void removeListener(IClusterTopologyListener listener)
      Removes a listener previously added via addListener(IClusterTopologyListener).
      Parameters:
      listener - Listener that should not be invoked anymore.