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public static interface Host.StateListener
Interface for listeners that are interested in hosts added, up, down and removed events.
It is possible for the same event to be fired multiple times, particularly for up or down events. Therefore, a listener should ignore the same event if it has already been notified of a node's state.
Method Summary | |
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void |
onAdd(Host host)
Called when a new node is added to the cluster. |
void |
onDown(Host host)
Called when a node is determined to be down. |
void |
onRemove(Host host)
Called when a node is removed from the cluster. |
void |
onUp(Host host)
Called when a node is determined to be up. |
Method Detail |
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void onAdd(Host host)
The newly added node should be considered up.
host
- the host that has been newly added.void onUp(Host host)
host
- the host that has been detected up.void onDown(Host host)
host
- the host that has been detected down.void onRemove(Host host)
host
- the removed host.
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