@Override
public boolean isAlive(InetAddress ep) {
if (ep.equals(Utils.getBroadcastAddress())) return true;
EndpointState epState = Gossiper.instance.getEndpointStateForEndpoint(ep);
// we could assert not-null, but having isAlive fail screws a node over so badly that
// it's worth being defensive here so minor bugs don't cause disproportionate
// badness. (See lealone-1463 for an example).
if (epState == null) logger.error("unknown endpoint {}", ep);
return epState != null && epState.isAlive();
}
/**
* Return the rack for which an endpoint resides in
*
* @param endpoint the endpoint to process
* @return string of rack
*/
@Override
public String getRack(InetAddress endpoint) {
if (endpoint.equals(Utils.getBroadcastAddress())) return myRack;
EndpointState epState = Gossiper.instance.getEndpointStateForEndpoint(endpoint);
if (epState == null || epState.getApplicationState(ApplicationState.RACK) == null) {
if (psnitch == null) {
if (savedEndpoints == null) savedEndpoints = ClusterMetaData.loadDcRackInfo();
if (savedEndpoints.containsKey(endpoint)) return savedEndpoints.get(endpoint).get("rack");
return DEFAULT_RACK;
} else return psnitch.getRack(endpoint);
}
return epState.getApplicationState(ApplicationState.RACK).value;
}