private async Task <string> PrepareListStageAsync(string messageString)
{
Console.WriteLine("Prepare list stage started");
MoveTaskPrepareListMessage message = JsonConvert.DeserializeObject <MoveTaskPrepareListMessage>(messageString);
return(await PrepareListStageInternalAsync(message));
}
private async Task <string> PrepareListStageInternalAsync(MoveTaskPrepareListMessage message)
{
string transactionId = message.TransactionId;
var transaction = await _transactionsRepository.GetTransactionAsync(transactionId);
if (transaction != null && transaction.State == TransactionStates.Denied)
{
return($"Transaction {transactionId} already denied");
}
var moveTransaction = transaction == null
? MoveTaskTransaction.Create(transactionId, message.ProjectId, message.ListTitle)
: MoveTaskTransaction.CreateFromBase(transaction);
moveTransaction.State = TransactionStates.Processing;
string projectId = message.ProjectId;
var project = await _projectsRepository.GetProjectAsync(projectId);
if (project == null)
{
string reason = $"Project {projectId} not found";
var rollbackOutboxMessage = OutboxMessageModel.Create(
new RollbackTransactionMessage
{
TransactionId = transactionId,
Reason = reason
}, Topics.Lists, TransactionMessageActions.MoveTask_Rollback);
moveTransaction.State = TransactionStates.Denied;
moveTransaction.Message = reason;
moveTransaction.UpdateData();
await _transactionsRepository.CreateOrUpdateTransactionAsync(moveTransaction, rollbackOutboxMessage);
return(reason);
}
try
{
var projectLists = (await _listsRepository.GetProjectListsAsyn(projectId)).ToList();
var sameTitleList = projectLists.FirstOrDefault(list => list.Title == message.ListTitle);
if (sameTitleList == null)
{
var newList = new ListModel
{
Title = message.ListTitle,
ProjectId = projectId
};
newList.Init();
moveTransaction.ListId = newList.Id;
moveTransaction.IsListCreated = true;
var completedOutboxMessage = OutboxMessageModel.Create(
new ListCreatedMessage
{
ListId = newList.Id,
ProjectId = newList.ProjectId,
Title = newList.Title
}, Topics.Lists, MessageActions.Created);
await _listsRepository.CreateListAsync(newList, completedOutboxMessage);
}
else
{
moveTransaction.ListId = sameTitleList.Id;
moveTransaction.IsListCreated = false;
}
moveTransaction.UpdateData();
var outboxMessage = OutboxMessageModel.Create(
new MoveTaskListPreparedMessage
{
TransactionId = transactionId,
ListId = moveTransaction.ListId
}, Topics.Lists, TransactionMessageActions.MoveTask_PrepareListCompleted);
await _transactionsRepository.CreateOrUpdateTransactionAsync(moveTransaction, outboxMessage);
return("Prepare list stage completed successful");
}
catch (Exception e)
{
string errorReason = $"Unknonw exception occured:\n{e.Message}\n{e.StackTrace}";
moveTransaction.Message = errorReason;
moveTransaction.State = TransactionStates.Denied;
var failedOutboxMessage = OutboxMessageModel.Create(
new RollbackTransactionMessage
{
TransactionId = transactionId,
Reason = moveTransaction.Message
}, Topics.Lists, TransactionMessageActions.MoveTask_Rollback);
await _transactionsRepository.CreateOrUpdateTransactionAsync(moveTransaction, failedOutboxMessage);
throw;
}
}