/// <summary>
/// Sends checking signal to Customer's vehicle and enqueue the result using RabbitMQ.
/// </summary>
/// <param name="cid">Customer Id</param>
public List <VehicleTransModel> PingVehiclesInQueue(int cid)
{
try
{
var vehicleTransList = new List <VehicleTransModel>();
// 1- ping vehicles of this customer/all and get signal statuses back.
var vehiclesSignalStatuses =
cid != 0
? _vehicleContextRepo.GetAll().Where(v => v.CustomerId != null && v.CustomerId == cid)
: _vehicleContextRepo.GetAll().Where(v => v.CustomerId != null);
// 2- post to DB.
foreach (var v in vehiclesSignalStatuses)
{
var vse = _genericsConnectionStatusRepo.GenerateSignal();
_genericsVehicleTransDbContextRepo.Add(new VehicleStatusTrans
{
PingTime = DateTime.Now,
Status = vse.ToString(),
VehicleId = v.Id
});
_genericsVehicleTransDbContextRepo.SaveChanges();
vehicleTransList.Add(new VehicleTransModel
{
VehicleId = v.Id,
VehicleCode = v.Code,
VehicleRegistrationNumber = v.RegNumber,
CustomerId = v.CustomerId,
CustomerName = _genericsCustomerDbContextRepo.Find(v.CustomerId).Name,
Status = vse.ToString()
});
}
// Publish list to EventBus queue.
_serviceBusQueue.Publish("Customer_VehicleStatusTrans", vehicleTransList);
return(vehicleTransList);
}
catch (NullReferenceException nullExp)
{
_logger.Log(LogLevel.Error, nullExp.Message, nullExp.Source);
throw;
}
catch (ObjectDisposedException objectDisponseExp)
{
_logger.Log(LogLevel.Error, objectDisponseExp.Message, objectDisponseExp.Source);
throw;
}
catch (NotSupportedException notSuppExp)
{
_logger.Log(LogLevel.Error, notSuppExp.Message, notSuppExp.Source);
throw;
}
catch (Exception exp)
{
_logger.Log(LogLevel.Error, exp.Message, exp.Source);
throw;
}
}
private async Task <bool> ProcessSignupAsync(Models.CourseStudent courseStudent)
{
try
{
if (courseStudent == null || courseStudent.CourseId == 0 || courseStudent.StudentId == 0)
{
_logger.LogInformation(INVALID_INPUTS);
return(false);
}
var course = await _courseDbContext.FindAsync(courseStudent.CourseId);
if (course == null)
{
throw new KeyNotFoundException();
}
if (course.CourseStudents.Count() >= course.Capacity)
{
throw new CourseCapacityFullException();
}
courseStudent.JoinDate = DateTime.UtcNow;
_courseStudentDbContext.Add(courseStudent);
var records = await _courseStudentDbContext.SaveChangesAsync();
return(records > 0);
}
catch (Exception exp)
{
_logger.Log(LogLevel.Error, exp.Message, exp.Source);
throw;
}
}
private bool ProcessAssign(Models.CourseTeacher courseTeacher)
{
try
{
if (courseTeacher == null || courseTeacher.CourseId == 0 || courseTeacher.TeacherId == 0)
{
_logger.LogInformation(INVALID_INPUTS);
return(false);
}
courseTeacher.JoinDate = DateTime.UtcNow;
_courseTeacherDbContext.Add(courseTeacher);
var records = _courseTeacherDbContext.SaveChanges();
return(records > 0);
}
catch (Exception exp)
{
_logger.Log(LogLevel.Error, exp.Message, exp.Source);
throw;
}
}