private Node GetNodeFromDataReader(CqlDataReader reader, Logger logger)
{
//get address of new node, and fallback to listen_address when address is set to any
var address = reader.GetIPAddress(reader.GetOrdinal("rpc_address"));
if(address == null || address.Equals(IPAddress.Any))
address = reader.GetIPAddress(reader.GetOrdinal("peer"));
var dc = reader.GetString(reader.GetOrdinal("data_center"));
var rack = reader.GetString(reader.GetOrdinal("rack"));
//check if we have an address, otherwise ignore
if(address == null || dc == null || rack == null)
{
logger.LogError("Incomplete node information retrieved for a node: address={0}, dc={1}, rack={2}",
address != null ? address.ToString() : "(address not found!)",
dc ?? "(datacenter not found)",
rack ?? "(rack not found)");
return null;
}
//get tokens
var tokens = (reader.GetSet<string>(reader.GetOrdinal("tokens"))) ?? new HashSet<string>();
//distill protocol version from release version
var release = reader.GetString(reader.GetOrdinal("release_version"));
byte protocolVersion = DistillProtocolVersion(release);
//create a new node
return new Node(address, this)
{
DataCenter = dc,
Rack = rack,
Tokens = tokens,
ProtocolVersion = protocolVersion
};
}