Examples of com.sun.sgs.service.NodeListener

com.sun.sgs.service.NodeListener
A listener that can be registered with the {@link WatchdogService}to be notified of node status change events. Invocations to the methods of a {@code NodeListener} are made outside of atransaction.
The implementations for the methods of this interface should be idempotent because they may be invoked multiple times. However, for any given node, the {@link #nodeStarted nodeStarted} methodwill never be invoked after the {@link #nodeFailed nodeFailed}method is invoked for that given node. @see WatchdogService#addNodeListener(NodeListener)

     * @throws  IllegalStateException if this service is shutting down
     */
    private void notifyNodeListeners(final Node node) {


  for (NodeListener listener : nodeListeners.keySet()) {
      final NodeListener nodeListener = listener;
      taskScheduler.scheduleTask(
    new AbstractKernelRunnable("NotifyNodeListeners") {
        public void run() {
      if (!shuttingDown() &&
                            isLocalNodeAliveNonTransactional()) 
      {
          if (node.isAlive()) {
        nodeListener.nodeStarted(node);
          } else {
        nodeListener.nodeFailed(node);
          }
      }
        }
    }, taskOwner);
  }

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     * @throws  IllegalStateException if this service is shutting down
     */
    private void notifyNodeListeners(final Node node) {


  for (NodeListener listener : nodeListeners.keySet()) {
      final NodeListener nodeListener = listener;
      taskScheduler.scheduleTask(
    new AbstractKernelRunnable("NotifyNodeListeners") {
        public void run() {
      if (!shuttingDown() &&
                            isLocalNodeAliveNonTransactional()) 
      {
                            nodeListener.nodeHealthUpdate(node);
      }
        }
    }, taskOwner);
  }
    }

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     * @throws  IllegalStateException if this service is shutting down
     */
    private void notifyNodeListeners(final Node node) {


  for (NodeListener listener : nodeListeners.keySet()) {
      final NodeListener nodeListener = listener;
      taskScheduler.scheduleTask(
    new AbstractKernelRunnable("NotifyNodeListeners") {
        public void run() {
      if (!shuttingDown() &&
                            isLocalNodeAliveNonTransactional()) 
      {
                            nodeListener.nodeHealthUpdate(node);
      }
        }
    }, taskOwner);
  }
    }

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Related Classes of com.sun.sgs.service.NodeListener

com.sun.sgs.impl.service.watchdog.WatchdogServiceImpl

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