jade.core
Interface NodeEventListener

public interface NodeEventListener

This interface is used to notify the JADE kernel of important events related to the platform nodes.

• Node addition.
• Node removal.
• An existing node has become suddenly unreachable.
• An existing node has become reachable again.

Author:

Giovanni Rimassa - FRAMeTech s.r.l.

See Also:

ServiceManagerImpl

Method Summary

void	nodeAdded(Node n) This method is invoked when a new node has joined the platform.
void	nodeReachable(Node n) This method is invoked when the local node discovers that a platform node, that was previously unreachable, has become reachable again.
void	nodeRemoved(Node n) This method is invoked when a node has left the platform.
void	nodeUnreachable(Node n) This method is invoked when the local node discovers that a platform node is not reachable anymore.

Method Detail

nodeAdded

void nodeAdded(Node n)

This method is invoked when a new node has joined the platform.

Parameters:

n - The newly added platform node.

nodeRemoved

void nodeRemoved(Node n)

This method is invoked when a node has left the platform.

Parameters:

n - The node that has just left.

nodeUnreachable

void nodeUnreachable(Node n)

This method is invoked when the local node discovers that a platform node is not reachable anymore. The discovery is due to some IMTP-specific network mechanism, and does not mean that the remote node has failed. A subsequent nodeReachable() call might be issued when the IMTP connection becomes working again.

Parameters:

n - The node that has become unreachable.

nodeReachable

void nodeReachable(Node n)

This method is invoked when the local node discovers that a platform node, that was previously unreachable, has become reachable again.

Parameters:

n - The node that has become reachable again.