/// <summary>
/// Paketauflösung in einem HierarchieNetz.
/// </summary>
/// <param name="package"></param>
/// <returns></returns>
public static HierarchiePackage ResolveHierarchie(HierarchiePackage package)
{
int anzConnection = ServerLogic.database.GetServerCount();
string ip = ServerConfig.host.ToString();
int id = ServerConfig.serverID;
switch (package.HierarchieRequest)
{
case HierarchieRequest.Invite:
//Ab hier soll man wissen, an WEN ES GEHEN SOLL UND MUSS!
if (package.destinationID != ServerConfig.serverID)
{
sendHierarchie(getAdress(package.destinationID), ToDo.Send, null);
}
else
{
//TO FIX: Schau erstmal nach ob der User existiert
if (ServerLogic.database.UserExist(package.login))
{
ServerLogic.database.SaveInvites(package.login, package.invite);
package.HierarchieAnswer = HierarchieAnswer.Success;
}
else
{
// TO FIX: User existiert nicht?
}
}
break;
case HierarchieRequest.NewServer:
if (anzConnection > 0)
{
//Eigene Send funktion machen
//Auch parallel
//sendHierarchie();
Console.WriteLine("Auf der SUche nach einem passenden Server");
StateEintrag stateEintrag = new StateEintrag();
List <HierarchiePackage> child = new List <HierarchiePackage>();
stateEintrag.SetCounter(ServerLogic.database.GetServerCount());
int childcount = 0;
for (int i = 0; i < ServerLogic.database.GetServerCount(); i++)
{
Console.WriteLine("Dieser Server hat Kinder");
int childID = ServerConfig.serverID * 10 + 1 - i; //Weil HierarchieID's!
if (ServerLogic.database.ServerExist(childID))
{
try
{
child.Add(sendHierarchie(getAdress(childID), ToDo.Info, stateEintrag));
childcount++;
}
catch (Exception)
{
Console.WriteLine("Etwas ist schief gelaufen beim KindServer");
}
}
}
//wartet auf die anderen. hoffentlich
//stateEintrag.wait();
if (childcount != 1) // wenn der Server nur ein Kind hat, so hat er das Sorgerecht für das Kind
{
//Wenn überhaupt was reingebracht wurde
if (child.Count > 0)
{
foreach (HierarchiePackage c in child)
{
//wenn zuverlässigerweise was schief gelaufen ist, wird das ignoriert
if (c != null)
{
if (c.anzConnection <= anzConnection)
{
anzConnection = c.anzConnection;
ip = c.destinationAdress;
id = c.destinationID;
}
}
}
}
}
}
package.destinationID = id;
package.destinationAdress = ip;
package.anzConnection = anzConnection;
//Muss ich weiterleiten an die Unter mir? oder Nicht? entsprechende Antwort schicken
break;
case HierarchieRequest.RegisterServer:
//Sollte immer durch newServer abgefragt werden!
Console.WriteLine("Ein neuer Servereintrag. bzw. Child");
int newId = ServerConfig.serverID * 10;
//if (Data.ServerConfig.host == Data.ServerConfig.root)
//{
// newId += 10;
//}
//if (database.getServerCount() == 0)
//{
// newId += 1;
//}
if (!ServerLogic.database.ServerExist(newId + 1))
{
newId += 1;
}
package.sourceID = newId;
ServerLogic.database.NewServerEntry(package.sourceAdress, newId);
break;
case HierarchieRequest.RegisterUser:
int anzUser = ServerLogic.database.GetUserCount();
//überprüfen ob USERNAME schon existiert!
if (ServerLogic.database.UserExist(package.login))
{
package.HierarchieAnswer = HierarchieAnswer.UserExistent;
break;
}
else if (anzConnection > 0)
{
//Eigene Send funktion machen
//Soll parallel ablaufen
//sendHierarchie();
StateEintrag stateEintrag = new StateEintrag();
List <HierarchiePackage> child = new List <HierarchiePackage>();
stateEintrag.SetCounter(ServerLogic.database.GetServerCount());
for (int i = 0; i < 2; i++)
{
int childID = (ServerConfig.serverID * 10) + 1 - i; //Weil HierarchieID's!
if (ServerLogic.database.ServerExist(childID))
{
child.Add(sendHierarchie(getAdress(childID), ToDo.Info, stateEintrag));
}
}
//wartet auf die anderen. hoffentlich
if (child.Count > 0)
{
child = stateEintrag.child;
foreach (HierarchiePackage c in child)
{
if (c != null)
{
if (c.anzUser <= anzUser)
{
anzUser = c.anzUser;
ip = c.destinationAdress;
id = c.destinationID;
}
}
}
}
}
package.destinationID = id;
package.destinationAdress = ip;
package.anzUser = anzUser;
package.HierarchieAnswer = HierarchieAnswer.Success;
break;
case HierarchieRequest.UserLogin:
if (package.destinationID == id)
{
if (ServerLogic.database.UserExist(package.login))
{
package.destinationAdress = ServerConfig.host.ToString();
package.HierarchieAnswer = HierarchieAnswer.Success;
}
else
{
package.HierarchieAnswer = HierarchieAnswer.Failure;
}
}
else
{
package = sendHierarchie(getAdress(package.destinationID), ToDo.Send, null);
}
break;
default:
break;
}
string getAdress(int ask)
{
int numberask = GetDigitCount(ask);
int numberid = GetDigitCount(id);
bool isUp = false;
int child = 0;
if (numberid >= numberask)
{
isUp = true;
}
else
{
int dif = (int)(numberask - numberid);
int level = (int)(ask / Math.Pow(10, dif));
//Bin ich das?
if (level != id)
{
isUp = true;
}
else
{
child = (int)(ask / Math.Pow(10, dif - 1));
}
}
int addressid = id;
if (isUp)
{
addressid /= 10;
}
else
{
addressid = child;
}
return(ServerLogic.database.GetServer(addressid));
}
int GetDigitCount(int number)
{
if (number != 0)
{
double baseExp = Math.Log10(Math.Abs(number));
return(Convert.ToInt32(Math.Floor(baseExp) + 1));
}
else
{
return(1);
}
}
HierarchiePackage sendHierarchie(string ipadress, ToDo _toDo, StateEintrag state)
{
Package hierarchie = new Package
{
hierarchie = package
};
//An beide Childs
if (_toDo == ToDo.Info)
{
hierarchie = ServerLogic.Send(hierarchie, IPAddress.Parse(ipadress));
state.DecrementCounter();
state.child.Add(hierarchie.hierarchie);
}
else if (_toDo == ToDo.Send) //nur an einer gewissen Server
{
hierarchie = ServerLogic.Send(hierarchie, IPAddress.Parse(ipadress));
}
return(hierarchie.hierarchie);
}
return(package);
}
/// <summary>
/// Resolve Acquired Packages and trigger corresponding requests. For Client
/// </summary>
/// <param name="package"></param>
public Package ResolvePackage(Package package)
{
switch (package.request)
{
/// In case of Login Request try to login to the server database and set Request accordingly
case Request.Login:
Console.WriteLine(LoginRequest);
if (package.serverSwitched)
{
if (database.Login(package.user))
{
List <KaEvent> kaEvents;
kaEvents = database.Read(package.user.name);
package.kaEvents = kaEvents;
try
{
package.invites = database.ReadInvites(package.user.name);
}
catch (Exception ex)
{
Console.WriteLine("ReadInvites failed.\n{0}\n{1}", ex.Message, ex.StackTrace);
}
writeResult(Request.Success, LoginSuccess);
}
else
{
writeResult(Request.Failure, LoginFail);
}
}
else
{
if (ServerConfig.structure == Structure.HIERARCHY)
{
///if serverID > 0 => Hierarchy
if (package.user.serverID > 0)
{
//Hierarchie Login
HierarchiePackage hierarchie = new HierarchiePackage
{
HierarchieRequest = HierarchieRequest.UserLogin,
login = package.user.name,
destinationID = package.user.serverID
};
hierarchie = HierarchyLogic.ResolveHierarchie(hierarchie);
switch (hierarchie.HierarchieAnswer)
{
case HierarchieAnswer.Success:
package.sourceServer = hierarchie.destinationAdress;
writeResult(Request.ChangeServer, ChangeServer);
break;
case HierarchieAnswer.Failure:
writeResult(Request.Failure, LoginFail);
break;
case HierarchieAnswer.Error:
writeResult(Request.Error, Error);
break;
default:
writeResult(Request.Failure, Error);
break;
}
}
///else => Send to P2P
else
{
//P2P Teil
P2PPackage p2p = new P2PPackage(package.user.name)
{
P2Prequest = P2PRequest.Login
};
//Sende Teil
Package sendPackage = new Package(p2p);
Package recievePackage;
recievePackage = Send(sendPackage, KnownServers.GetRandomWellKnownPeer());
if (recievePackage != null)
{
switch (recievePackage.p2p.P2PAnswer)
{
case P2PAnswer.Success:
package.sourceServer = recievePackage.p2p.lastIP;
writeResult(Request.ChangeServer, ChangeServer);
break;
case P2PAnswer.Failure:
writeResult(Request.Failure, LoginFail);
break;
default:
writeResult(Request.Failure, LoginFail);
break;
}
}
else
{
writeResult(Request.Error, Error);
}
}
}
else if (ServerConfig.structure == Structure.P2P)
{
///if serverID == 0 => P2P
if (package.user.serverID == 0)
{
//P2P Teil
P2PPackage p2p = new P2PPackage(package.user.name)
{
P2Prequest = P2PRequest.Login
};
p2p = P2PLogic.ResolveP2P(p2p);
switch (p2p.P2PAnswer)
{
case P2PAnswer.Success:
package.sourceServer = p2p.lastIP;
writeResult(Request.ChangeServer, ChangeServer);
break;
case P2PAnswer.Failure:
writeResult(Request.Failure, LoginFail);
break;
default:
writeResult(Request.Failure, LoginFail);
break;
}
}
///else => Send to Hierarchy
else
{
//Hierarchie Login
HierarchiePackage hierarchie = new HierarchiePackage
{
HierarchieRequest = HierarchieRequest.UserLogin,
login = package.user.name,
destinationID = package.user.serverID
};
//Sende Teil
Package sendPackage = new Package(hierarchie);
Package recievePackage;
recievePackage = Send(sendPackage, KnownServers.Root);
if (recievePackage != null)
{
switch (hierarchie.HierarchieAnswer)
{
case HierarchieAnswer.Success:
package.sourceServer = hierarchie.destinationAdress;
writeResult(Request.ChangeServer, ChangeServer);
break;
case HierarchieAnswer.Failure:
writeResult(Request.Failure, LoginFail);
break;
case HierarchieAnswer.Error:
writeResult(Request.Error, Error);
break;
default:
writeResult(Request.Failure, Error);
break;
}
}
else
{
writeResult(Request.Error, Error);
}
}
}
}
break;
/// In case of Register Request try to login to the server database and set Request accordingly
case Request.Register:
Console.WriteLine(RegisterRequest);
try
{
if (package.serverSwitched)
{
if (database.RegisterUser(package.user, package.passwordConfirm))
{
writeResult(Request.Success, RegisterSuccess);
package.user.serverID = ServerConfig.serverID;
}
else
{
writeResult(Request.Failure, RegisterFail);
}
}
else
{
if (ServerConfig.structure == Structure.HIERARCHY)
{
//Hierarchie Teil
HierarchiePackage hierarchie = new HierarchiePackage
{
HierarchieRequest = HierarchieRequest.RegisterUser
};
hierarchie = HierarchyLogic.ResolveHierarchie(hierarchie);
if (hierarchie.HierarchieAnswer == HierarchieAnswer.UserExistent)
{
writeResult(Request.UserExistent, UserExistent);
break;
}
//P2P Teil
//ConnectP2P(P2PRequest.NewUser, package.user.name, writeResult);
//P2P Teil
P2PPackage p2p = new P2PPackage(package.user.name)
{
P2Prequest = P2PRequest.NewUser
};
//Sende Teil
Package sendPackage = new Package(p2p);
Package recievePackage;
recievePackage = Send(sendPackage, KnownServers.GetRandomWellKnownPeer());
if (recievePackage != null)
{
switch (recievePackage.p2p.P2PAnswer)
{
case P2PAnswer.Success:
if (hierarchie.anzUser < recievePackage.p2p.anzUser)
{
package.sourceServer = hierarchie.destinationAdress;
}
else
{
package.sourceServer = recievePackage.p2p.lastIP;
}
writeResult(Request.ChangeServer, ChangeServer);
break;
///user already exists
case P2PAnswer.UserExistent:
writeResult(Request.UserExistent, UserExistent);
break;
case P2PAnswer.Error:
Console.WriteLine(recievePackage.p2p.ErrorMsg);
writeResult(Request.Error, Error);
break;
default:
package.sourceServer = hierarchie.destinationAdress;
writeResult(Request.ChangeServer, ChangeServer);
break;
}
}
else
{
package.sourceServer = hierarchie.destinationAdress;
writeResult(Request.ChangeServer, ChangeServer);
}
}
else if (ServerConfig.structure == Structure.P2P)
{
//P2P Teil
P2PPackage p2p = new P2PPackage
{
P2Prequest = P2PRequest.NewUser
};
p2p = P2PLogic.ResolveP2P(p2p);
///user is already existent
if (p2p.P2PAnswer == P2PAnswer.Visited)
{
writeResult(Request.UserExistent, UserExistent);
break;
}
//Hierarchie Teil
HierarchiePackage hierarchie = new HierarchiePackage
{
HierarchieRequest = HierarchieRequest.RegisterUser
};
//Sende Teil
Package sendPackage = new Package(hierarchie);
Package recievePackage;
recievePackage = Send(sendPackage, KnownServers.Root);
if (recievePackage != null)
{
switch (recievePackage.hierarchie.HierarchieAnswer)
{
case HierarchieAnswer.Success:
if (p2p.anzUser < recievePackage.hierarchie.anzUser)
{
package.sourceServer = p2p.lastIP;
}
else
{
package.sourceServer = recievePackage.hierarchie.destinationAdress;
}
writeResult(Request.ChangeServer, RegisterSuccess);
break;
///user already exists
case HierarchieAnswer.UserExistent:
writeResult(Request.UserExistent, UserExistent);
break;
default:
package.sourceServer = p2p.lastIP;
writeResult(Request.ChangeServer, ChangeServer);
break;
}
}
else
{
package.sourceServer = p2p.lastIP;
writeResult(Request.ChangeServer, ChangeServer);
}
}
}
}
catch (Exception e)
{
Console.WriteLine(e.GetType().FullName);
Console.WriteLine(e.Message);
writeResult(Request.Failure, RegisterFail);
}
break;
case Request.Save:
Console.WriteLine(SaveRequest);
try
{
database.SaveEvent(package.kaEvents[0]);
writeResult(Request.Success, SaveSuccess);
}
catch (Exception e)
{
Console.WriteLine(e.GetType().FullName);
Console.WriteLine(e.Message);
writeResult(Request.Failure, SaveFail);
}
break;
case Request.Delete:
Console.WriteLine(DeleteRequest);
try
{
database.DeleteEvent(package.kaEvents[0].TerminID);
writeResult(Request.Success, DeleteSuccess);
}
catch (Exception e)
{
Console.WriteLine(e.GetType().FullName);
Console.WriteLine(e.Message);
writeResult(Request.Failure, DeleteFail);
}
break;
case Request.Load:
Console.WriteLine(LoadRequest);
try
{
List <KaEvent> kaEvents;
//kaEvents = database.LoadEvents(package.user, package.kaEvents[0].Beginn);
kaEvents = database.Read(package.user.name);
package.kaEvents = kaEvents;
writeResult(Request.Success, LoadSuccess);
}
catch (Exception e)
{
Console.WriteLine(e.GetType().FullName);
Console.WriteLine(e.Message);
writeResult(Request.Failure, LoadFail);
}
break;
case Request.Test:
Console.WriteLine(TestRequest);
break;
case Request.Invite:
//Prüfung ServerID
Console.WriteLine(InviteRequest);
if (ServerConfig.structure == Structure.HIERARCHY)
{
/*
* Hier ist nur Client-Server.
* Wenn Server-Server Invite message ist, wird es bei resolveHierarchie erledigt
* Das hier sollte wenn möglich als Asynchron, bzw. nach art Fire und Forget.
* Wenn mehrere User eingetragen wird, hat der Server eine lange Anschreibezeit
* */
foreach (User member in package.kaEvents[0].members)
{
///member is user in current server
if (member.serverID == ServerConfig.serverID)
{
if (database.UserExist(member.name))
{
database.SaveInvites(member.name, package.kaEvents[0]);
writeResult(Request.Success, InviteSuccess);
}
else
{
writeResult(Request.Failure, UserNotFound);
}
}
///member is user in hierarchy topology
else if (member.serverID > 0)
{
HierarchiePackage hierarchie = new HierarchiePackage
{
HierarchieRequest = HierarchieRequest.Invite,
invite = package.kaEvents[0],
login = member.name,
destinationID = member.serverID
};
HierarchyLogic.ResolveHierarchie(hierarchie);
switch (hierarchie.HierarchieAnswer)
{
case HierarchieAnswer.Success:
writeResult(Request.Success, InviteSuccess);
break;
case HierarchieAnswer.Failure:
writeResult(Request.Failure, InviteFail);
break;
default:
break;
}
}
///member is user in p2p topology
else
{
//P2P Teil
P2PPackage p2p = new P2PPackage(member.name, package.kaEvents[0])
{
P2Prequest = P2PRequest.Invite
};
//Sende Teil
Package sendPackage = new Package(p2p);
Package recievePackage;
recievePackage = Send(sendPackage, KnownServers.GetRandomWellKnownPeer());
if (recievePackage != null)
{
switch (recievePackage.p2p.P2PAnswer)
{
case P2PAnswer.Success:
writeResult(Request.Success, InviteSuccess);
break;
case P2PAnswer.Failure:
writeResult(Request.Failure, InviteFail);
break;
default:
writeResult(Request.Failure, InviteFail);
break;
}
}
else
{
writeResult(Request.Error, Error);
}
}
}
}
else if (ServerConfig.structure == Structure.P2P)
{
//Logik P2P Invite
List <User> list = package.kaEvents[0].members;
foreach (User member in list)
{
///member is user in p2p topology
if (member.serverID == 0)
{
if (database.UserExist(member.name))
{
database.SaveInvites(member.name, package.kaEvents[0]);
writeResult(Request.Success, InviteSuccess);
}
else
{
P2PPackage p2p = new P2PPackage(member.name, package.kaEvents[0])
{
P2Prequest = P2PRequest.Invite
};
p2p = P2PLogic.ResolveP2P(p2p);
switch (p2p.P2PAnswer)
{
case P2PAnswer.Success:
writeResult(Request.Success, InviteSuccess);
break;
case P2PAnswer.Failure:
writeResult(Request.Failure, InviteFail);
break;
default:
writeResult(Request.Error, Error);
break;
}
}
}
///member is user in hierarchy topology
else
{
//Hierarchie Teil
HierarchiePackage hierarchie = new HierarchiePackage
{
HierarchieRequest = HierarchieRequest.Invite,
invite = package.kaEvents[0],
login = member.name,
destinationID = member.serverID
};
//SendeTeil
Package sendPackage = new Package(hierarchie);
Package recievePackage;
recievePackage = Send(sendPackage, KnownServers.Root);
if (recievePackage != null)
{
switch (recievePackage.hierarchie.HierarchieAnswer)
{
case HierarchieAnswer.Success:
writeResult(Request.Success, InviteSuccess);
break;
case HierarchieAnswer.Failure:
writeResult(Request.Failure, InviteFail);
break;
default:
writeResult(Request.Failure, InviteFail);
break;
}
}
else
{
writeResult(Request.Error, Error);
}
}
}
}
break;
case Request.AnswerInvite:
//TODO für P2P und Hierarchisch
database.AnswerInvite(package.kaEvents[0], package.user.name, package.answerInvite);
break;
default:
Console.WriteLine(RequestUnknown);
break;
}
return(package);
void writeResult(Request request, string line)
{
Console.WriteLine(line);
package.request = request;
}
}