/// <summary>
/// Emulates authentication (login process) for existing user.
/// Password is skipped since not used in emulation.
/// </summary>
/// <param name="email">User email that is used as a login.</param>
/// <returns>
/// Session ID in case of successful authentication.
/// Null or empty string if authentication fails.
/// </returns>
public static string Authenticate(string email)
{
using (var scope = CreateTagScope(ClassHelper.GetCurrentMethodName()))
{
scope.Tags[AppTag.Email] = email;
// Bind further log entries to user ID.
lock ( Locker )
{
scope.Tags[AppTag.UserId] = Users[email].UserId;
}
if (RandomHelper.GenerateBoolean())
{
var sessionId = Guid.NewGuid().ToString("D");
lock ( Locker )
{
Sessions.Add(sessionId, email);
}
scope.Tags[AppTag.SessionId] = sessionId;
Logger.Info("Authentication succeeded.");
return(sessionId);
}
else
{
Logger.Error("Authentication failed.");
return(null);
}
}
}
public static void StopVirtualMachine(string sessionId, string virtualMachineName)
{
using (var scope = CreateTagScope(ClassHelper.GetCurrentMethodName()))
{
scope.Tags[AppTag.SessionId] = sessionId;
scope.Tags[AppTag.UserId] = GetUserBySession(sessionId).UserId;
scope.Tags[AppTag.VirtualMachine] = virtualMachineName;
Logger.Info("User requested to stop virtual machine.");
ThreadPool.QueueUserWorkItem(_ => DataCenter.StopVirtualMachine(virtualMachineName));
}
}
public static void CreateNewVirtualMachine(string userId, string virtualMachineName)
{
using (var scope = CreateTagScope(ClassHelper.GetCurrentMethodName()))
{
lock ( VirtualMachinesLock )
{
var virtualMachine = new VirtualMachine(userId, virtualMachineName);
VirtualMachines[virtualMachineName] = virtualMachine;
scope.Tags[AppTag.UserId] = userId;
scope.Tags[AppTag.VirtualMachine] = virtualMachineName;
Logger.Info("New virtual machine was created.");
}
}
}
public static void StopVirtualMachine(string virtualMachineName)
{
using (var scope = CreateTagScope(ClassHelper.GetCurrentMethodName()))
{
lock ( VirtualMachinesLock )
{
var virtualMachine = VirtualMachines[virtualMachineName];
scope.Tags[AppTag.UserId] = virtualMachine.UserId;
scope.Tags[AppTag.VirtualMachine] = virtualMachineName;
Logger.Info("Stopping virtual machine...");
virtualMachine.Stop();
}
}
}
/// <summary>
/// Emulates process of creating a new user.
/// Password is skipped since not used in emulation.
/// </summary>
public static void RegisterNewUser(string email, string firstName, string lastName)
{
using (var scope = CreateTagScope(ClassHelper.GetCurrentMethodName()))
{
scope.Tags[AppTag.Email] = email;
scope.Tags[AppTag.FirstName] = firstName;
scope.Tags[AppTag.LastName] = lastName;
Logger.Info("Request to register new user.");
lock ( Locker )
{
var user = new User(email);
Users.Add(email, user);
// Bind further log entries to user ID.
scope.Tags[AppTag.UserId] = user.UserId;
}
Logger.Info("New user registered.");
}
}
public static bool OrderNewVirtualMachine(string sessionId, string virtualMachineName, decimal amount)
{
using (var scope = CreateTagScope(ClassHelper.GetCurrentMethodName()))
{
var user = GetUserBySession(sessionId);
scope.Tags[AppTag.UserId] = user.UserId;
scope.Tags[AppTag.SessionId] = sessionId;
Logger.InfoFormat("Redirect user to external payment system. Amount = {0}", amount);
if (RandomHelper.GenerateBoolean())
{
scope.Tags[AppTag.VirtualMachine] = virtualMachineName;
Logger.Info("Creating virtual machine...");
ThreadPool.QueueUserWorkItem(_ => DataCenter.CreateNewVirtualMachine(user.UserId, virtualMachineName));
return(true);
}
var errorId = Guid.NewGuid().ToString("D");
scope.Tags[AppTag.ErrorId] = errorId;
Logger.Error("Payment failed. Unique error ID was displayed.");
return(false);
}
}
