public Server GetServerForKey(String key)
{
Server serverHoldingKey;
if (this.hashRing.Count == 0)
{
return(null);
}
uint hashKey = FnvHash.To32BitFnvHash(key);
if (this.hashRing.ContainsKey(hashKey))
{
serverHoldingKey = this.hashRing[hashKey];
}
else
{
uint[] sortedKeys = this.hashRing.Keys.ToArray();
uint firstServerKey = sortedKeys.FirstOrDefault(x => x >= hashKey);
serverHoldingKey = this.hashRing[firstServerKey];
}
return(serverHoldingKey);
}
private void RemoveServerFromRing(Server server)
{
for (int i = 0; i < numberOfReplicas; i++)
{
string serverIdentity = String.Concat(server.IpAddress, ":", i);
uint hashKey = FnvHash.To32BitFnvHash(serverIdentity);
this.hashRing.Remove(hashKey);
}
}