/// <summary>
/// Позволяет зарегистрировать задачу. Если задача ранее была зарегистрирована, то обновляет параметры ранее зарегистрированной задачи.
/// </summary>
/// <returns>Возвращает зарегистрированную задачу.</returns>
/// <exception cref="ArgumentNullException">Возникает, если <paramref name="taskRequest"/> равен null.</exception>
/// <exception cref="ArgumentException">Возникает, если не указано имя задачи.</exception>
/// <exception cref="ArgumentException">Возникает, если не указан уникальный ключ задачи.</exception>
public TaskDescription RegisterTask(TaskRequest taskRequest)
{
if (taskRequest == null)
{
throw new ArgumentNullException(nameof(taskRequest));
}
if (string.IsNullOrEmpty(taskRequest.Name))
{
throw new ArgumentException("Имя задачи не может быть пустым.", nameof(taskRequest.Name));
}
if (string.IsNullOrEmpty(taskRequest.UniqueKey))
{
throw new ArgumentException("Уникальный ключ задачи не может быть пустым.", nameof(taskRequest.UniqueKey));
}
if (taskRequest.Schedules?.GroupBy(x => x.GetUniqueKey()).Any(x => x.Count() > 1) ?? false)
{
throw new ArgumentException("В задаче есть повторяющиеся правила запуска.", nameof(taskRequest.Schedules));
}
try
{
var taskDescription = _taskList.AddOrUpdate(taskRequest.UniqueKey,
key => UpdateTask(new TaskDescription(), taskRequest),
(key, old) => UpdateTask(old, taskRequest)
);
PrepareTaskSchedules(taskDescription);
return(taskDescription);
}
catch (Exception ex)
{
this.RegisterEvent(Journaling.EventType.CriticalError, "Ошибка во время регистрации задачи", null, ex);
throw new Exception("Неожиданная ошибка во время регистрации задачи.");
}
}
private TaskDescription UpdateTask(TaskDescription taskDescription, TaskRequest taskRequest)
{
using (var db = new Db.DataContext())
{
var taskDb = db.Task.Where(x => x.UniqueKey == taskRequest.UniqueKey).Include(x => x.TaskSchedules).FirstOrDefault();
if (taskDb == null)
{
taskDb = new Db.Task()
{
Name = taskRequest.Name,
Description = taskRequest.Description,
IsEnabled = null,
TaskSchedules = new List <Db.TaskSchedule>(),
UniqueKey = taskRequest.UniqueKey
};
db.Task.Add(taskDb);
db.SaveChanges();
}
taskDb.Name = taskRequest.Name;
taskDb.Description = taskRequest.Description;
if (!taskRequest.TaskOptions.HasFlag(TaskOptions.AllowDisabling))
{
taskDb.IsEnabled = null;
}
if (!taskRequest.TaskOptions.HasFlag(TaskOptions.AllowManualSchedule) && taskDb.TaskSchedules.Count > 0)
{
db.TaskSchedule.RemoveRange(taskDb.TaskSchedules);
taskDb.TaskSchedules.Clear();
}
db.SaveChanges();
var schedules = new List <TaskSchedule>();
foreach (var scheduleDb in taskDb.TaskSchedules)
{
TaskSchedule taskSchedule = null;
if (scheduleDb.DateTimeFixed.HasValue)
{
taskSchedule = new TaskFixedTimeSchedule(new DateTimeOffset(scheduleDb.DateTimeFixed.Value.Ticks, TimeSpan.Zero));
}
else if (!string.IsNullOrEmpty(scheduleDb.Cron))
{
taskSchedule = new TaskCronSchedule(scheduleDb.Cron);
}
if (taskSchedule == null)
{
continue;
}
taskSchedule.IsEnabled = scheduleDb.IsEnabled;
schedules.Add(taskSchedule);
}
taskDescription.Id = taskDb.Id;
taskDescription.Name = taskRequest.Name;
taskDescription.Description = taskRequest.Description;
taskDescription.ExecutionLambda = taskRequest.ExecutionLambda;
taskDescription.IsConfirmed = true;
taskDescription.UniqueKey = taskRequest.UniqueKey;
taskDescription.IsEnabled = taskDb.IsEnabled ?? taskRequest.IsEnabled;
taskDescription.TaskOptions = taskRequest.TaskOptions;
taskDescription.Schedules = new ReadOnlyCollection <TaskSchedule>(taskRequest.Schedules ?? new List <TaskSchedule>());
taskDescription.ManualSchedules = new ReadOnlyCollection <TaskSchedule>(schedules.GroupBy(x => x.GetUniqueKey()).Select(x => x.First()).ToList());
taskDescription.JournalOptions = taskRequest.JournalOptions;
}
return(taskDescription);
}