private IReadModel userLoggedIn(IGESEvent x)
{
var userLoggedIn = (UserLoggedIn)x;
var userLogins = new UserLogins
{
UserName = userLoggedIn.UserName,
Id = userLoggedIn.Id,
Token = userLoggedIn.Token,
Date = userLoggedIn.Now
};
var input = JsonConvert.SerializeObject(userLoggedIn);
var output = JsonConvert.SerializeObject(userLogins);
// noise
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("input: ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(input);
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("output: ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(output);
// noise
return(userLogins);
}
private IReadModel userRegistered(IGESEvent x)
{
Thread.Sleep(1000);
var userRegistered = (UserRegistered)x;
var user = _mongoRepository.Get <User>(u => u.Id == userRegistered.Id);
user.UserName = userRegistered.UserName;
user.FirstName = userRegistered.FirstName;
user.LastName = userRegistered.LastName;
user.Email = userRegistered.EmailAddress;
var input = JsonConvert.SerializeObject(userRegistered);
var output = JsonConvert.SerializeObject(user);
// noise
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("input: ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(input);
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("output: ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(output);
// noise
return(user);
}
public bool HandlesEvent(IGESEvent @event)
{
if (@event.EventType == "UserCreated") { return true; }
if (@event.EventType == "UserRegistered") { return true; }
if (@event.EventType == "UserLoggedIn") { return true; }
return false;
}
public void HandleEvent(IGESEvent _event)
{
// noise
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("Handing Event to broadcast block: ");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(_event.EventType);
Console.Write(Environment.NewLine);
// noise
_broadcastBlock.Post(_event);
}
public void HandleEvent(IGESEvent _event)
{
// noise
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("Handing Event to broadcast block: ");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(_event.EventType);
Console.Write(Environment.NewLine);
// noise
_broadcastBlock.Post(_event);
}
// this is only used by readmodeleventhandler not commandmodel
//TODO figure out how to abstract this so it can be use by both.
//TODO problem is event is saved to mongo and command is saved to GES
protected void HandleEvent(IGESEvent @event, Func<IGESEvent, IReadModel> handleBy)
{
if (ExpectEventPositionIsGreaterThanLastRecorded(@event)) { return; };
var view = handleBy(@event);
_mongoRepository.Save(view);
// noise
Console.ForegroundColor = ConsoleColor.Cyan;
Console.Write("ReadModel Saved: ");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(JsonConvert.SerializeObject(view));
// noise
SetEventAsRecorded(@event);
}
protected void SetEventAsRecorded(IGESEvent @event)
{
// can probably find way to check if we have already got it
// and then just update and save rather than retreive for every event
if ([email protected])
throw new ArgumentException("ResolvedEvent didn't come off a subscription to all (has no position).");
var lastProcessedPosition = _mongoRepository.Get<LastProcessedPosition>(x => x.HandlerType == _handlerType)
?? new LastProcessedPosition { HandlerType = _handlerType, CommitPosition = 0, PreparePosition = 0 };
lastProcessedPosition.CommitPosition = @event.OriginalPosition.Value.CommitPosition;
lastProcessedPosition.PreparePosition = @event.OriginalPosition.Value.PreparePosition;
_mongoRepository.Save(lastProcessedPosition);
}
public bool HandlesEvent(IGESEvent @event)
{
if (@event.EventType == "UserCreated")
{
return(true);
}
if (@event.EventType == "UserRegistered")
{
return(true);
}
if (@event.EventType == "UserLoggedIn")
{
return(true);
}
return(false);
}
protected void SetEventAsRecorded(IGESEvent @event)
{
// can probably find way to check if we have already got it
// and then just update and save rather than retreive for every event
if ([email protected])
{
throw new ArgumentException("ResolvedEvent didn't come off a subscription to all (has no position).");
}
var lastProcessedPosition = _mongoRepository.Get <LastProcessedPosition>(x => x.HandlerType == _handlerType)
?? new LastProcessedPosition {
HandlerType = _handlerType, CommitPosition = 0, PreparePosition = 0
};
lastProcessedPosition.CommitPosition = @event.OriginalPosition.Value.CommitPosition;
lastProcessedPosition.PreparePosition = @event.OriginalPosition.Value.PreparePosition;
_mongoRepository.Save(lastProcessedPosition);
}
// this is only used by readmodeleventhandler not commandmodel
//TODO figure out how to abstract this so it can be use by both.
//TODO problem is event is saved to mongo and command is saved to GES
protected void HandleEvent(IGESEvent @event, Func <IGESEvent, IReadModel> handleBy)
{
if (ExpectEventPositionIsGreaterThanLastRecorded(@event))
{
return;
}
;
var view = handleBy(@event);
_mongoRepository.Save(view);
// noise
Console.ForegroundColor = ConsoleColor.Cyan;
Console.Write("ReadModel Saved: ");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(JsonConvert.SerializeObject(view));
// noise
SetEventAsRecorded(@event);
}
protected async void PostEvent(IGESEvent @event, Guid commitId, Dictionary<string, object> updateHeaders = null)
{
// standard data for metadata portion of persisted event
var commitHeaders = new Dictionary<string, object>
{
// handy tracking id
{CommitIdHeader, commitId},
{CommandClrTypeHeader, @event.GetType().AssemblyQualifiedName}
};
// add extra data to metadata portion of presisted event
commitHeaders = (updateHeaders ?? new Dictionary<string, object>())
.Concat(commitHeaders)
.GroupBy(d => d.Key)
.ToDictionary(d => d.Key, d => d.First().Value);
// process command so they fit the expectations of GES
var commandToSave = new[] {ToEventData(Guid.NewGuid(), @event, commitHeaders)};
// post to command stream
await _eventStoreConnection.AppendToStreamAsync(EventStreamName, ExpectedVersion.Any, commandToSave);
}
protected async void PostEvent(IGESEvent @event, Guid commitId, Dictionary <string, object> updateHeaders = null)
{
// standard data for metadata portion of persisted event
var commitHeaders = new Dictionary <string, object>
{
// handy tracking id
{ CommitIdHeader, commitId },
{ CommandClrTypeHeader, @event.GetType().AssemblyQualifiedName }
};
// add extra data to metadata portion of presisted event
commitHeaders = (updateHeaders ?? new Dictionary <string, object>())
.Concat(commitHeaders)
.GroupBy(d => d.Key)
.ToDictionary(d => d.Key, d => d.First().Value);
// process command so they fit the expectations of GES
var commandToSave = new[] { ToEventData(Guid.NewGuid(), @event, commitHeaders) };
// post to command stream
await _eventStoreConnection.AppendToStreamAsync(EventStreamName, ExpectedVersion.Any, commandToSave);
}
private IReadModel userCreated(IGESEvent x)
{
var userCreated = (UserCreated)x;
var user = new User {
Id = userCreated.Id
};
var input = JsonConvert.SerializeObject(userCreated);
var output = JsonConvert.SerializeObject(user);
// noise
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("input: ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(input);
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("output: ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(output);
// noise
return(user);
}
private IReadModel userRegistered(IGESEvent x)
{
Thread.Sleep(1000);
var userRegistered = (UserRegistered)x;
var user = _mongoRepository.Get<User>(u => u.Id == userRegistered.Id);
user.UserName = userRegistered.UserName;
user.FirstName = userRegistered.FirstName;
user.LastName = userRegistered.LastName;
user.Email = userRegistered.EmailAddress;
var input = JsonConvert.SerializeObject(userRegistered);
var output = JsonConvert.SerializeObject(user);
// noise
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("input: ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(input);
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("output: ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(output);
// noise
return user;
}
private IReadModel userLoggedIn(IGESEvent x)
{
var userLoggedIn = (UserLoggedIn) x;
var userLogins = new UserLogins
{
UserName = userLoggedIn.UserName,
Id = userLoggedIn.Id,
Token = userLoggedIn.Token,
Date = userLoggedIn.Now
};
var input = JsonConvert.SerializeObject(userLoggedIn);
var output = JsonConvert.SerializeObject(userLogins);
// noise
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("input: ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(input);
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("output: ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(output);
// noise
return userLogins;
}
public bool HandlesEvent(IGESEvent @event)
{
return @event.EventType == "RegisterUser";
}
// this is used by all handlers
protected bool ExpectEventPositionIsGreaterThanLastRecorded(IGESEvent x)
{
return(x.OriginalPosition == null || _lastProcessedPosition.CommitPosition >= x.OriginalPosition.Value.CommitPosition);
}
public bool HandlesEvent(IGESEvent @event)
{
return @event.EventType == "LoginUser";
}
// this is used by all handlers
protected bool ExpectEventPositionIsGreaterThanLastRecorded(IGESEvent x)
{
return x.OriginalPosition == null || _lastProcessedPosition.CommitPosition >= x.OriginalPosition.Value.CommitPosition;
}
public bool HandlesEvent(IGESEvent @event)
{
return(@event.EventType == "RegisterUser");
}
public bool HandlesEvent(IGESEvent @event)
{
return(@event.EventType == "LoginUser");
}
private IReadModel userCreated(IGESEvent x)
{
var userCreated = (UserCreated)x;
var user = new User {Id = userCreated.Id};
var input = JsonConvert.SerializeObject(userCreated);
var output = JsonConvert.SerializeObject(user);
// noise
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("input: ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(input);
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("output: ");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(output);
// noise
return user;
}
