All Known Implementing Classes:

FailureDetector
```
public interface IFailureDetector
```
An interface that provides an application with the ability to query liveness information of a node in the cluster. It also exposes methods which help an application register callbacks for notifications of liveness information of nodes.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`forceConviction(InetAddressAndPort ep)`	force conviction of endpoint in the failure detector
`void`	`interpret(InetAddressAndPort ep)`	This method is invoked by any entity wanting to interrogate the status of an endpoint.
`boolean`	`isAlive(InetAddressAndPort ep)`	Failure Detector's knowledge of whether a node is up or down.
`void`	`registerFailureDetectionEventListener(IFailureDetectionEventListener listener)`	Register interest for Failure Detector events.
`void`	`remove(InetAddressAndPort ep)`	remove endpoint from failure detector
`void`	`report(InetAddressAndPort ep)`	This method is invoked by the receiver of the heartbeat.
`void`	`unregisterFailureDetectionEventListener(IFailureDetectionEventListener listener)`	Un-register interest for Failure Detector events.

- Method Detail
  - isAlive
```
boolean isAlive(InetAddressAndPort ep)
```
    Failure Detector's knowledge of whether a node is up or down.
    
    Parameters:
    
    ep - endpoint in question.
    
    Returns:
    
    true if UP and false if DOWN.
  - interpret
```
void interpret(InetAddressAndPort ep)
```
    This method is invoked by any entity wanting to interrogate the status of an endpoint. In our case it would be the Gossiper. The Failure Detector will then calculate Phi and deem an endpoint as suspicious or alive as explained in the Hayashibara paper. param ep endpoint for which we interpret the inter arrival times.
  - report
```
void report(InetAddressAndPort ep)
```
    This method is invoked by the receiver of the heartbeat. In our case it would be the Gossiper. Gossiper inform the Failure Detector on receipt of a heartbeat. The FailureDetector will then sample the arrival time as explained in the paper. param ep endpoint being reported.
  - remove
```
void remove(InetAddressAndPort ep)
```
    remove endpoint from failure detector
  - forceConviction
```
void forceConviction(InetAddressAndPort ep)
```
    force conviction of endpoint in the failure detector
  - registerFailureDetectionEventListener
```
void registerFailureDetectionEventListener(IFailureDetectionEventListener listener)
```
    Register interest for Failure Detector events.
    
    Parameters:
    
    listener - implementation of an application provided IFailureDetectionEventListener
  - unregisterFailureDetectionEventListener
```
void unregisterFailureDetectionEventListener(IFailureDetectionEventListener listener)
```
    Un-register interest for Failure Detector events.
    
    Parameters:
    
    listener - implementation of an application provided IFailureDetectionEventListener

Interface IFailureDetector

Method Summary

Method Detail

isAlive

interpret

report

remove

forceConviction

registerFailureDetectionEventListener

unregisterFailureDetectionEventListener