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 Detail

      • 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.