private static void Update(DbConnection db, ISagaState data, string correlationId)
{
var old = data.AutoTimestamp;
var result = db.Update <SagaRow>()
.Set(d => d.Data, data.Serialize().ToByteArray())
.Set(d => d.Version, data.AutoTimestamp)
.Set(d => d.LastChangedOn, DateTime.UtcNow)
.Set(d => d.IsCompleted, data.IsCompleted)
.Where(d => d.SagaId == SagaRow.GetId(correlationId, data.GetType()) && d.Version == old)
.Execute();
if (result != 1)
{
throw new SagaConcurrencyException();
}
}
public ISagaState GetSaga(string correlationId, Type sagaStateType)
{
try
{
return(_db.RetryOnTransientError(db =>
{
var data = db.WithSql(q => q.From <SagaRow>()
.Where(d => d.SagaId == SagaRow.GetId(correlationId, sagaStateType))
.Select(d => d.Data)).GetValue();
return data?.Deserialize <ISagaState>();
}));
}
catch (DbException ex)
{
throw new BusStorageException("", ex);
}
}
private static void Insert(DbConnection db, ISagaState data, string correlationId)
{
try
{
db.Insert(new SagaRow()
{
SagaId = SagaRow.GetId(correlationId, data.GetType()),
Data = data.Serialize().ToByteArray(),
IsCompleted = false,
LastChangedOn = DateTime.UtcNow,
Version = data.AutoTimestamp
});
}
catch (DbException ex)
{
if (db.IsUniqueViolation(ex))
{
throw new SagaExistsException();
}
}
}