public override IList <string> Resolve(IList <string> names)
{
// normalize all input names to be in the form of IP addresses
names = NetUtils.NormalizeHostNames(names);
IList <string> result = new AList <string>(names.Count);
if (names.IsEmpty())
{
return(result);
}
IList <string> uncachedHosts = GetUncachedHosts(names);
// Resolve the uncached hosts
IList <string> resolvedHosts = rawMapping.Resolve(uncachedHosts);
//cache them
CacheResolvedHosts(uncachedHosts, resolvedHosts);
//now look up the entire list in the cache
return(GetCachedHosts(names));
}
private static Node CoreResolve(string hostName)
{
IList <string> tmpList = new AList <string>(1);
tmpList.AddItem(hostName);
IList <string> rNameList = dnsToSwitchMapping.Resolve(tmpList);
string rName = null;
if (rNameList == null || rNameList[0] == null)
{
rName = NetworkTopology.DefaultRack;
Log.Info("Couldn't resolve " + hostName + ". Falling back to " + NetworkTopology.
DefaultRack);
}
else
{
rName = rNameList[0];
Log.Info("Resolved " + hostName + " to " + rName);
}
return(new NodeBase(hostName, rName));
}
