public void HandleRpc(ISender caller, string meth, IList args, object state)
{
if (meth == "create")
{
Edge calling_edge = (Edge)((ReqrepManager.ReplyState)caller).ReturnPath;
string remote_path = (string)args[0];
string local_path = (string)args[1];
PathEdgeListener el = _pel_map[local_path];
if (el.IsStarted)
{
PathEdge npe = new PathEdge(calling_edge, local_path, remote_path);
lock ( _sync ) {
//We don't announce yet, wait till we get some data, which
//verifies that the other side has seen it.
_unannounced[calling_edge] = npe;
}
//So the new Edge has been announced.
Rpc.SendResult(state, true);
}
else
{
throw new Exception(
String.Format("PathEdgeListener({0}) not started", local_path));
}
}
else
{
throw new AdrException(-32601, "No Handler for method: " + meth);
}
}
/**
* Handles Rrm TimeoutChecking as well as removing stale entries from the
* _unannounced Edge dictionary.
*/
protected void TimeoutCheck()
{
_rrm.TimeoutChecker(null, null);
DateTime now = DateTime.UtcNow;
long next = _next_check;
if (next < now.Ticks)
{
// If someone else is checking it, let's just end it here
long current = Interlocked.Exchange(ref _next_check, now.AddMinutes(5).Ticks);
if (next != current)
{
return;
}
}
// Get the list of old edges
DateTime remove_timeout = now.AddMinutes(-5);
List <Edge> to_close = new List <Edge>();
lock (_sync) {
foreach (Edge e in _unannounced.Keys)
{
if (e.CreatedDateTime < remove_timeout)
{
to_close.Add(e);
}
}
}
// Close the Edges
foreach (Edge e in to_close)
{
PathEdge pe = null;
if (!_unannounced.TryGetValue(e, out pe))
{
continue;
}
try {
pe.Close();
} catch (Exception ex) {
Console.WriteLine(ex);
}
}
// Remove them from the _unannounced dictionary
lock (_sync) {
foreach (Edge e in to_close)
{
_unannounced.Remove(e);
}
}
}
/** try to create a new PathEdge and send the EdgeEvent
*/
public void SendPathEdgeEvent(PathEdge pe)
{
if (1 == _is_started)
{
SendEdgeEvent(pe);
}
else
{
throw new Exception(
String.Format("PathEdgeListener{0} not yet started", _path));
}
}
public void HandleEC(bool succ, Edge e, Exception x)
{
if (succ)
{
/*
* Got the underlying Edge, now do the path protocol
*/
Channel results = new Channel(1);
results.CloseEvent += delegate(object q, EventArgs args) {
try {
RpcResult res = (RpcResult)results.Dequeue();
object o = res.Result;
if (o is Exception)
{
Console.WriteLine(o);
throw (o as Exception);
}
//If we get here, everything looks good:
PathEdge pe = new PathEdge(e, LocalPath, RemotePath);
//Start sending e's packets into pe
pe.Subscribe();
ECB(true, pe, null);
}
catch (Exception cx) {
ECB(false, null, cx);
}
};
//Make sure we hear the packets on this edge:
e.Subscribe(_pel._pem, null);
//Now make the rpc call:
_pel._pem.Rpc.Invoke(e, results, "sys:pathing.create", LocalPath, RemotePath);
}
else
{
ECB(false, null, x);
}
}
/** Handle incoming data on an Edge
*/
public void HandleData(MemBlock data, ISender retpath, object state)
{
MemBlock rest_of_data;
PType p;
if (state == null)
{
p = PType.Parse(data, out rest_of_data);
}
else
{
//a demux has already happened:
p = (PType)state;
rest_of_data = data;
}
if (PType.Protocol.Pathing.Equals(p))
{
/*
* We use a special PType to denote this transaction so
* we don't confuse it with other RepRep communication
*/
_rrm.HandleData(rest_of_data, retpath, null);
}
else if (PType.Protocol.Rpc.Equals(p))
{
/*
* Send this to the RpcHandler
*/
Rpc.HandleData(rest_of_data, retpath, null);
}
else
{
/*
* This is some other data
* It is either:
* 1) Time to announce an already created edge.
* 2) Assume this is a "default path" edge creation, to be backwards
* compatible
*/
Edge e = null;
PathEdge pe = null;
try {
e = (Edge)retpath;
PathEdgeListener pel = null;
lock ( _sync ) {
if (_unannounced.TryGetValue(e, out pe))
{
//
_unannounced.Remove(e);
pel = _pel_map[pe.LocalPath];
}
}
if (pe == null)
{
/*
* This must be a "default path" incoming connection
*/
pel = _pel_map[Root];
pe = new PathEdge(e, Root, Root);
}
pel.SendPathEdgeEvent(pe);
pe.Subscribe();
pe.ReceivedPacketEvent(data);
}
catch (Exception x) {
if (pe != null)
{
//This closes both edges:
pe.Close();
}
else if (e != null)
{
Console.WriteLine("Closing ({0}) due to: {1}", e, x);
e.Close();
}
}
}
}
