// scan and check if given NodeIdent was found
public ServerDesc FindInScanned(NodeIdent ni)
{
// try to find our node indent among scan result
var sd = (from x in ScanResults where ni.Match(x) select x).FirstOrDefault();
return(sd);
}
public Node(NodeRegistry nreg, NodeIdent ni)
{
this.rdClient = new Client();
this.nreg = nreg;
this.nodeIdent = ni;
// FIXME!
}
// Adds new (not yet connected) nodes, removes the no longer reported ones (if disconnected)
void ProcessScanResults(List <ServerDesc> serversFound)
{
// remember last scan result
lastScanResult = serversFound;
//// create not yet registered ones
var serverDict = new Dictionary <NodeIdent, int>();
foreach (var sd in serversFound)
{
var ni = NodeIdent.FromServerDesc(sd);
serverDict[ni] = 1; // remember server existence
// if( !_nodes.ContainsKey( ni ) )
// {
// _nodes[ni] = new Node( sd );
// }
}
// remove no longer wanted and no longer found by scan
foreach (var node in _nodes.Values.ToList()) // iterate a copy so that we can remove from orig dict
{
var ni = node.nodeIdent;
if (!serverDict.ContainsKey(ni)) // not found by scan
{
if (!node.Wanted)
{
// forget the node
_nodes.Remove(ni);
node.Dispose();
}
}
}
}
/// <summary>
/// Finds node by its identifier
/// </summary>
/// <param name="ni"></param>
/// <returns></returns>
public Node Find(NodeIdent ni)
{
Node res;
if (_nodes.TryGetValue(ni, out res))
{
return(res);
}
return(null);
}
// creates node or just increment its refcount
public Node Alloc(NodeIdent ni)
{
Node node;
if (!_nodes.TryGetValue(ni, out node))
{
node = new Node(this, ni);
_nodes[ni] = node;
}
node.AddRef();
return(node);
}
// unref node and dispose if no references left
public void Dealloc(NodeIdent ni)
{
Node node;
if (!_nodes.TryGetValue(ni, out node))
{
return;
}
if (node.Unref() <= 0)
{
_nodes.Remove(ni);
node.Dispose();
}
}
public NodeHunter(NodeRegistry nreg, NodeIdent ni)
{
this.nreg = nreg;
// tell the node we need it (this should connect if not yet connected)
node = nreg.Alloc(ni);
}