com.hazelcast.internal.cluster.fd

Interface FailureDetector

All Known Implementing Classes:

PhiAccrualFailureDetector

public interface FailureDetector

Failure detector tracks heartbeats of a member and decides liveness/availability of the member.

Method Summary

Modifier and Type	Method and Description
void	heartbeat(long timestamp) Notifies this failure detector about received heartbeat message from the tracked member.
boolean	isAlive(long timestamp) Returns true if the tracked member is considered as alive/available.
long	lastHeartbeat() Returns the last heartbeat timestamp for the tracked member.
double	suspicionLevel(long timestamp) Returns suspicion level about the tracked member.

Method Detail

heartbeat

void heartbeat(long timestamp)

Notifies this failure detector about received heartbeat message from the tracked member.

Parameters:

timestamp - timestamp of heartbeat message in milliseconds

isAlive

boolean isAlive(long timestamp)

Returns true if the tracked member is considered as alive/available.

Parameters:

timestamp - timestamp in milliseconds

Returns:

true if the member is alive

lastHeartbeat

long lastHeartbeat()

Returns the last heartbeat timestamp for the tracked member.

Returns:

heartbeat timestamp in milliseconds

suspicionLevel

double suspicionLevel(long timestamp)

Returns suspicion level about the tracked member. Returned value is mostly implementation dependent. 0 indicates no suspicion at all.

Parameters:

timestamp - timestamp in milliseconds

Returns:

suspicion level