public SyncServerModule() : base("/sync")
{
Get["/ping"] = _ => Response.AsText($"Alive @ {DateTime.Now}");
Get["/"] = _ => View["Index.html", AppState <string> .Current];
Post["/register"] = x =>
{
AppState <string> .Current.VectorClockSyncServer = AppState <string> .Current.VectorClockSyncServer ?? new VectorClockSyncServer <string>(new DelegateToClientConflictResolver <string>());
AppState <string> .Current.VectorClockSyncServer.Start();
VectorClockNode <string> sender = this.Bind <VectorClockNodeDto <string> >().ToModel();
ServerSideVectorClockNode <string> node = new ServerSideVectorClockNode <string>(sender.NodeID, Request.Url.SiteBase, sender.Payload, sender.Revision);
bool isSuccess = AppState <string> .Current.VectorClockSyncServer.TryRegisterNode(node);
return(isSuccess ? HttpStatusCode.OK : HttpStatusCode.BadRequest);
};
Put["/"] = x =>
{
AppState <string> .Current.VectorClockSyncServer = AppState <string> .Current.VectorClockSyncServer ?? new VectorClockSyncServer <string>(new DelegateToClientConflictResolver <string>());
VectorClockNode <string> sender = this.Bind <VectorClockNodeDto <string> >().ToModel();
AppState <string> .Current.VectorClockSyncServer.QueueEvent(sender);
return(HttpStatusCode.Accepted);
};
}
public override bool TryRegisterNode(VectorClockNode <T> node)
{
using (var http = new HttpClient())
{
StringContent json = new StringContent(JsonConvert.SerializeObject(VectorClockNodeDto <T> .FromModel(node)), Encoding.Default, "application/json");
var response = http.PostAsync($"{Url}sync/register", json).Result;
return(response.IsSuccessStatusCode);
}
}
public override VectorClockSyncResult <T> Acknowledge(VectorClockNode <T> vectorClock)
{
var result = base.Acknowledge(vectorClock);
if (AppState <T> .Current.VectorClockNode != this)
{
NotifyRemoteNode();
}
return(result);
}
public static VectorClockNodeDto <T> FromModel(VectorClockNode <T> model)
{
return(new VectorClockNodeDto <T>
{
Payload = model.Payload,
NodeID = model.NodeID,
Version = model.Version,
Revision = model.Revision.Select(VectorClockNodeVersionDto.FromModel).ToArray(),
});
}
public override VectorClockSyncResult <string> Acknowledge(VectorClockNode <string> vectorClock)
{
Console.WriteLine($"{this} tries to aknowledge {vectorClock} @ {DateTime.Now}");
var result = base.Acknowledge(vectorClock);
Console.WriteLine($"{result} @ {DateTime.Now}");
return(result);
}
public NodeModule() : base("/")
{
Get["/"] = _ => View["Index.html", AppState <string> .Current];
Get["/ping"] = _ => Response.AsText($"Alive @ {DateTime.Now}");
Get["/status"] = _ => Response.AsJson(AppState <string> .Current.LatestSync);
Put["/ack"] = x =>
{
AppState <string> .Current.VectorClockNode = AppState <string> .Current.VectorClockNode ?? new ServerSideVectorClockNode <string>(Request.Url.SiteBase, "http://localhost:60000");
VectorClockNode <string> sender = this.Bind <VectorClockNodeDto <string> >().ToModel();
AppState <string> .Current.LatestSync = AppState <string> .Current.VectorClockNode.Acknowledge(sender);
return(HttpStatusCode.Accepted);
};
Post["/say"] = x =>
{
AppState <string> .Current.VectorClockNode = AppState <string> .Current.VectorClockNode ?? new ServerSideVectorClockNode <string>(Request.Url.SiteBase, "http://localhost:60000");
Telegram telegram = this.Bind <Telegram>();
AppState <string> .Current.VectorClockNode.Say(telegram.Message);
return(HttpStatusCode.OK);
};
Post["/resolveConflict"] = x =>
{
Telegram telegram = this.Bind <Telegram>();
AppState <string> .Current.LatestSync.ResolveConflict(telegram.Message);
AppState <string> .Current.LatestSync = AppState <string> .Current.VectorClockNode.Acknowledge(AppState <string> .Current.LatestSync.Solution);
(AppState <string> .Current.VectorClockNode as ServerSideVectorClockNode <string>).NotifySyncServer();
return(HttpStatusCode.OK);
};
}
public override VectorClockSyncResult <T> Acknowledge(VectorClockNode <T> vectorClock)
{
var result = base.Acknowledge(vectorClock);
return(result);
}
public VectorClockConflict(VectorClockNode <T> nodeA, VectorClockNode <T> nodeB)
{
NodeA = nodeA;
NodeB = nodeB;
}
public override void QueueEvent(VectorClockNode <T> eventSource)
{
AppState <T> .Current.VectorClockSyncServer.QueueEvent(eventSource);
}
