FailureDetector

All Known Implementing Classes:

DeadlineFailureDetector, PhiAccrualFailureDetector
```
public interface FailureDetector
```
Returns true if the resource is considered to be up and healthy and returns false otherwise.

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static class FailureDetector.Clock

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`heartbeat()`	Notifies the FailureDetector that a heartbeat arrived from the monitored resource.
`boolean`	`isAvailable()`
`boolean`	`isMonitoring()`	Returns true if the failure detector has received any heartbeats and started monitoring of the resource.

- Method Detail
  - isAvailable
```
boolean isAvailable()
```
  - isMonitoring
```
boolean isMonitoring()
```
    Returns true if the failure detector has received any heartbeats and started monitoring of the resource.
    
    Returns:
    
    (undocumented)
  - heartbeat
```
void heartbeat()
```
    Notifies the FailureDetector that a heartbeat arrived from the monitored resource. This causes the FailureDetector to update its state.