public async Task <bool> BookAsync(DateTime from, DateTime to, Guid userId)
{
var transactionId = Guid.NewGuid();
var commitRequestTasks = new Task <bool>[3]
{
_flightsService.CheckAvailablityAsync(from, to, transactionId),
_hotelsService.CheckAvailablityAsync(from, to, transactionId),
_carsService.CheckAvailablityAsync(from, to, transactionId),
};
await Task.WhenAll(commitRequestTasks);
var isSucceeded = commitRequestTasks.All(t => t.Result);
if (!isSucceeded)
{
await UnlockAsync(transactionId);
return(false);
}
var model = new VacationsBookingModel
{
From = from,
To = to,
TransactionId = transactionId,
UserId = userId
};
var commitRequests = new Task[3]
{
_flightsService.BookAsync(model),
_hotelsService.BookAsync(model),
_carsService.RentAsync(model),
};
await Task.WhenAll(commitRequests);
return(true);
}