protected async Task <T> InTx <T>(Func <ISession, Task <T> > function)
{
using (var session = SessionFactory.OpenSession())
using (var txn = session.BeginTransaction())
{
T result;
try
{
result = await function.Invoke(session).ConfigureAwait(false);
await txn.CommitAsync().ConfigureAwait(false);
return(result);
}
catch (Exception ex)
{
// TODO: exception handling including retry logic
string message = $"Exception {ex}. Inner exception ${ex.InnerException}";
TestContextWriter.WriteLine(message);
Trace.WriteLine(message);
await txn.RollbackAsync().ConfigureAwait(false);
throw;
}
}
}
public async Task Save(Param model)
{
try
{
await InTx(async session =>
{
ParamEntity entity = await session.GetAsync <ParamEntity>(model.Id).ConfigureAwait(false) ?? new ParamEntity();
entity.Key = model.Key;
entity.Value = model.Value;
entity.Description = model.Description;
model.Id = (Guid)await session.SaveAsync(entity).ConfigureAwait(false);
}).ConfigureAwait(false);
}
catch (GenericADOException ex)
{
if (ex.IsDuplicateKey())
{
throw new ValidationException("The Key field must be unique");
}
TestContextWriter.WriteLine($"GenericADOException: HRESULT = {ex.HResult}");
throw;
}
}