private void DiscoverNodesSync()
{
using (var discoveryClient = new DiscoveryClient(new UdpDiscoveryEndpoint()))
{
FindResponse fileToMachineEndPoints =
discoveryClient.Find(new FindCriteria(typeof(IFileToMachineServiceContract)));
foreach (EndpointDiscoveryMetadata endpoint in fileToMachineEndPoints.Endpoints)
{
try
{
var client = new FileToMachineClient(new BasicHttpBinding(), endpoint.Address);
FileToMachineHandler.AddToRoutingTable(client.Ping().NodeIdentifier);
}
catch (CommunicationException e)
{
}
}
FindResponse reverseIndexEndPoints =
discoveryClient.Find(new FindCriteria(typeof(IReverseIndexServiceContract)));
foreach (EndpointDiscoveryMetadata endPoint in reverseIndexEndPoints.Endpoints)
{
try
{
var client = new ReverseIndexServiceClient(new BasicHttpBinding(), endPoint.Address);
ReverseIndexHandler.AddToRoutingTable(client.Ping().NodeIdentifier);
}
catch (CommunicationException e)
{
}
}
}
}
private void InitDiscovery()
{
Logger.Info("Starting the (Initial) Discovery proccess...");
int discoveredReverseIndex = 0, discoveredFileToMachine = 0;
var finder = new KadNodeFinder();
finder.FileToMachineEndpointDiscovered += (_, e) =>
{
discoveredReverseIndex++;
FileToMachineHandler.AddToRoutingTable(e.NodeIdentifier);
Logger.Info("New Reverse Index service node found: " + e.NodeIdentifier);
};
finder.ReverseIndexServiceEndpointDiscovered += (_, e) =>
{
discoveredFileToMachine++;
ReverseIndexHandler.AddToRoutingTable(e.NodeIdentifier);
Logger.Info("New File2Machine service node found: " + e.NodeIdentifier);
};
finder.DiscoveryFinished += (_, __) => NodeDiscoveryCompleted();
// when minNodes are discovered, ActivateAndJoin()
const int minKnownNodesBeforeJoiningAsClient = 1;
finder.FileToMachineEndpointDiscovered +=
(_, __) =>
{
if (discoveredReverseIndex >= minKnownNodesBeforeJoiningAsClient &&
discoveredFileToMachine >= minKnownNodesBeforeJoiningAsClient &&
!IsActive)
{
ActivateAndJoin();
}
};
finder.InitDiscovery();
}