Constructor Detail

• ANodeStability

  public ANodeStability(int nodeStability,
                int agentMetricsRate)

Method Detail

• start

  public void start()

  Starts the watchdog thread.

• nodeDeath

  public abstract void nodeDeath(Map<Node,Node> nodes)

  This callback is invoked when node death is suspected. You need to do your own synchronization on your own implementation of this method if you need it.

• nodeArrives

  public void nodeArrives(Node n)

  Record the arrival of a node. Implementor may want to override this to perform other logic. Be sure to call super.nodeArrives(n) if you override or none of this works.

• missedNode

  public abstract void missedNode(Node n,
                int c)

  Called if a heartbeat is missed, in case caller wants to do take some action such as logging the event. OK to do nothing. Implementor must synchronize if desired.

• nodeRecovers

  public abstract void nodeRecovers(Node n)

  Called when removing a node had missed heartbeats but has recovered.

• shutdown

  public void shutdown()

  Graceful shutdown of the thread.

• run

  public void run()

  Thread main, run forvever checking for delinquent nodes.

  Specified by:

  run in interface Runnable