@Override
public void report(InetAddress ep) {
if (logger.isTraceEnabled()) logger.trace("reporting {}", ep);
long now = System.nanoTime();
ArrivalWindow heartbeatWindow = arrivalSamples.get(ep);
if (heartbeatWindow == null) {
// avoid adding an empty ArrivalWindow to the Map
heartbeatWindow = new ArrivalWindow(SAMPLE_SIZE);
heartbeatWindow.add(now);
arrivalSamples.put(ep, heartbeatWindow);
} else {
heartbeatWindow.add(now);
}
}
@Override
public void interpret(InetAddress ep) {
ArrivalWindow hbWnd = arrivalSamples.get(ep);
if (hbWnd == null) {
return;
}
long now = System.nanoTime();
double phi = hbWnd.phi(now);
if (logger.isTraceEnabled()) logger.trace("PHI for {} : {}", ep, phi);
if (PHI_FACTOR * phi > getPhiConvictThreshold()) {
logger.trace("notifying listeners that {} is down", ep);
logger.trace("intervals: {} mean: {}", hbWnd, hbWnd.mean());
for (IFailureDetectionEventListener listener : fdEvntListeners) {
listener.convict(ep, phi);
}
}
}