com.atlassian.beehive.db.spi

Interface ClusterNodeHeartBeatDao

public interface ClusterNodeHeartBeatDao

Clustered applications need to implement this DAO in order to be able to use the DatabaseClusterLockService.

Method Summary

Modifier and Type	Method and Description
Collection<String>	findNodesWithHeartbeatsAfter(long time)
Long	getLastHeartbeatTime(String nodeId) Returns the last time a heartbeat was sent by the given node.
String	getNodeId() Returns the globally unique Identifier for this cluster node.
void	writeHeartBeat(long time) Writes a heartbeat for this node at the given time.

Method Detail

getNodeId

@Nonnull
String getNodeId()

Returns the globally unique Identifier for this cluster node.

Returns:

the globally unique Identifier for this cluster node.

writeHeartBeat

void writeHeartBeat(long time)

Writes a heartbeat for this node at the given time. Caller will pass the time to stamp; in production this would normally be System.currentTimeMillis().

Parameters:

time - the time in millis to write as the heartbeat.

getLastHeartbeatTime

@Nullable
Long getLastHeartbeatTime(@Nonnull
                                    String nodeId)

Returns the last time a heartbeat was sent by the given node.

A null value indicates no heartbeats have been sent by this node.

Parameters:

nodeId - the node

Returns:

the last time a heartbeat was sent by the given node.

findNodesWithHeartbeatsAfter

@Nonnull
Collection<String> findNodesWithHeartbeatsAfter(long time)