private Message ProcJoinRequest(Message msg)
{
OutputManager.Server.Write("Processing join request...");
Messages.JoinRequest jrMsg = new JoinRequest(msg.ToString());
OutputManager.Server.Write("Finding join point...");
Messages.ResourceOwnerRequest joinPointRequest = new Messages.ResourceOwnerRequest(this.localNode, jrMsg.senderID);
OutputManager.Server.Write("Awaiting to process...");
Message tmp = ProcResourceOwnerRequest(joinPointRequest);
OutputManager.Server.Write("process awaited");
Messages.ResourceOwnerResponse joinPointResponse = tmp as Messages.ResourceOwnerResponse;
Messages.JoinResponse rMsg; // Used to create the response message later
if (joinPointResponse == null)
{
OutputManager.Server.Write("No join point found." + (tmp == null ? "null" : tmp.ToString()));
OutputManager.Server.Write("Join request failed!");
rMsg = new Messages.JoinResponse(this.localNode, this.localNode, this.localNode);
rMsg.isProcessed = false;
}
else
{
OutputManager.Server.Write("Generating Pred and Succ nodes...");
ChordNode succNode = new ChordNode(joinPointResponse.ownerIpAddress, joinPointResponse.ownerPort, joinPointResponse.ownerId);
ChordNode predNode = new ChordNode(joinPointResponse.predIpAddress, joinPointResponse.predPort, joinPointResponse.predId);
OutputManager.Server.Write("Generating a response...");
rMsg = new Messages.JoinResponse(this.localNode, succNode, predNode);
rMsg.isProcessed = true;
OutputManager.Server.Write("Join request processed!");
}
return(rMsg);
}
// string localIpAddress = Dns.GetHostEntry(Dns.GetHostName()).AddressList[0].ToString()
public LocalNode(int port) : base(Dns.GetHostEntry(Dns.GetHostName()).AddressList[0].ToString(), port)
{
localResources = new Dictionary <string, Tuple <string, string> >();
msgProccessor = new LocalMessageProcessor(this);
serverComponent = new AsynchronousServer(port, msgProccessor);
clientComponent = new AsynchronousClient();
predNode = this;
succNode = this;
var serverTask = Task.Run(() => serverComponent.StartServer());
}
private Message ProcUpdatePredRequest(Message msg)
{
Messages.UpdatePredNodeRequest upnrMsg = new Messages.UpdatePredNodeRequest(msg.ToString());
// Update local node relationship
ChordNode predNode = new ChordNode(upnrMsg.predIpAddress, upnrMsg.predPort, upnrMsg.predId);
this.localNode.predNode = predNode;
// The pred communicates with the server component,
// so there is no reason to update the client connections
upnrMsg.isProcessed = true;
// craft a response message
Messages.UpdateNodeResponse response = new UpdateNodeResponse(this.localNode, true);
response.isProcessed = true;
return(response);
}
private Message ProcUpdateSuccRequest(Message msg)
{
Messages.UpdateSuccNodeRequest usnrMsg = new Messages.UpdateSuccNodeRequest(msg.ToString());
// Update local node relationship
OutputManager.Server.Write("Updating local node relationship...");
ChordNode succNode = new ChordNode(usnrMsg.succIpAddress, usnrMsg.succPort, usnrMsg.succId);
this.localNode.succNode = succNode;
// Adjust connection to client node
OutputManager.Server.Write("Disconnecting from old succ node...");
this.localNode.DisconnectFromNode();
OutputManager.Server.Write("Connecting to new succ node...");
this.localNode.ConnectToNode(succNode.IpAddress, succNode.Port);
usnrMsg.isProcessed = true;
// craft a response message
OutputManager.Server.Write("Generating a response...");
Messages.UpdateNodeResponse response = new UpdateNodeResponse(this.localNode, true);
response.isProcessed = true;
OutputManager.Server.Write("Finished processing an update succ request");
return(response);
}
